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0
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1 /* File IO for XEmacs.
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2 Copyright (C) 1985-1988, 1992-1995 Free Software Foundation, Inc.
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3 Copyright (C) 1996 Ben Wing.
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4
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5 This file is part of XEmacs.
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6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: Mule 2.0, FSF 19.30. */
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211
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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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0
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24
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25 #include <config.h>
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26 #include "lisp.h"
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27
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28 #include "buffer.h"
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29 #include "events.h"
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30 #include "frame.h"
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31 #include "insdel.h"
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32 #include "lstream.h"
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33 #include "redisplay.h"
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34 #include "sysdep.h"
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35 #include "window.h" /* minibuf_level */
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70
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36 #ifdef MULE
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37 #include "mule-coding.h"
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38 #endif
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0
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39
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2
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40 #ifdef HAVE_LIBGEN_H /* Must come before sysfile.h */
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41 #include <libgen.h>
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42 #endif
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0
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43 #include "sysfile.h"
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44 #include "sysproc.h"
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45 #include "syspwd.h"
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46 #include "systime.h"
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47 #include "sysdir.h"
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48
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49 #ifdef HPUX
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50 #include <netio.h>
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51 #ifdef HPUX_PRE_8_0
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52 #include <errnet.h>
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211
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53 #endif /* HPUX_PRE_8_0 */
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54 #endif /* HPUX */
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55
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56 #ifdef WINDOWSNT
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57 #define NOMINMAX 1
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58 #include <windows.h>
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59 #include <stdlib.h>
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60 #include <fcntl.h>
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61 #endif /* not WINDOWSNT */
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62
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63 #ifdef DOS_NT
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64 #define CORRECT_DIR_SEPS(s) \
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65 do { if ('/' == DIRECTORY_SEP) dostounix_filename (s); \
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66 else unixtodos_filename (s); \
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67 } while (0)
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68 /* On Windows, drive letters must be alphabetic - on DOS, the Netware
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69 redirector allows the six letters between 'Z' and 'a' as well. */
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70 #ifdef MSDOS
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71 #define IS_DRIVE(x) ((x) >= 'A' && (x) <= 'z')
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0
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72 #endif
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211
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73 #ifdef WINDOWSNT
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74 #define IS_DRIVE(x) isalpha (x)
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75 #endif
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76 /* Need to lower-case the drive letter, or else expanded
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77 filenames will sometimes compare inequal, because
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78 `expand-file-name' doesn't always down-case the drive letter. */
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79 #define DRIVE_LETTER(x) (tolower (x))
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80 #endif /* DOS_NT */
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0
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81
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82 /* Nonzero during writing of auto-save files */
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83 static int auto_saving;
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84
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85 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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86 will create a new file with the same mode as the original */
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87 static int auto_save_mode_bits;
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88
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151
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89 /* Alist of elements (REGEXP . HANDLER) for file names
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0
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90 whose I/O is done with a special handler. */
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91 Lisp_Object Vfile_name_handler_alist;
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92
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93 /* Format for auto-save files */
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94 Lisp_Object Vauto_save_file_format;
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95
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96 /* Lisp functions for translating file formats */
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97 Lisp_Object Qformat_decode, Qformat_annotate_function;
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98
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99 /* Functions to be called to process text properties in inserted file. */
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100 Lisp_Object Vafter_insert_file_functions;
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101
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102 /* Functions to be called to create text property annotations for file. */
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103 Lisp_Object Vwrite_region_annotate_functions;
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104
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105 /* During build_annotations, each time an annotation function is called,
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106 this holds the annotations made by the previous functions. */
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107 Lisp_Object Vwrite_region_annotations_so_far;
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108
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109 /* File name in which we write a list of all our auto save files. */
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110 Lisp_Object Vauto_save_list_file_name;
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111
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112 int disable_auto_save_when_buffer_shrinks;
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113
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114 Lisp_Object Qfile_name_handler_alist;
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115
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211
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116 /* Syncing with FSF 19.34.6 note: although labelled as NT-specific, these
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117 two lisp variables are compiled in even when not defined(DOS_NT).
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118 Need to check if we should bracket them between #ifdef's.
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119 --marcpa */
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120 /* On NT, specifies the directory separator character, used (eg.) when
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121 expanding file names. This can be bound to / or \.
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122
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123 This needs to be initialized statically, because file name functions
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124 are called during initialization. */
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235
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125 Lisp_Object Vdirectory_sep_char;
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126
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127 #ifdef DOS_NT
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128 /* Until we can figure out how to deal with the functions in this file in
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129 a civilized fashion, this will remain #ifdef'ed out. -slb */
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211
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130 /* For the benefit of backwards compatability with earlier versions of
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131 Emacs on DOS_NT, provide a way to disable the REPLACE option support
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132 in insert-file-contents. */
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133 Lisp_Object Vinsert_file_contents_allow_replace;
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134 #endif /* DOS_NT */
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135
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0
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136 /* These variables describe handlers that have "already" had a chance
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137 to handle the current operation.
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138
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139 Vinhibit_file_name_handlers is a list of file name handlers.
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140 Vinhibit_file_name_operation is the operation being handled.
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141 If we try to handle that operation, we ignore those handlers. */
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142
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143 static Lisp_Object Vinhibit_file_name_handlers;
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144 static Lisp_Object Vinhibit_file_name_operation;
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145
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146 Lisp_Object Qfile_error, Qfile_already_exists;
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147
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148 Lisp_Object Qauto_save_hook;
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149 Lisp_Object Qauto_save_error;
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150 Lisp_Object Qauto_saving;
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151
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152 Lisp_Object Qcar_less_than_car;
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153
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154 Lisp_Object Qcompute_buffer_file_truename;
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155
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156 /* signal a file error when errno contains a meaningful value. */
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157
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158 DOESNT_RETURN
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159 report_file_error (CONST char *string, Lisp_Object data)
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160 {
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114
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161 /* #### dmoore - This uses current_buffer, better make sure no one
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162 has GC'd the current buffer. File handlers are giving me a headache
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163 maybe I'll just always protect current_buffer around all of those
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164 calls. */
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165
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0
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166 signal_error (Qfile_error,
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167 Fcons (build_translated_string (string),
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151
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168 Fcons (lisp_strerror (errno), data)));
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0
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169 }
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170
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171 void
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172 maybe_report_file_error (CONST char *string, Lisp_Object data,
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173 Lisp_Object class, Error_behavior errb)
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174 {
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175 /* Optimization: */
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176 if (ERRB_EQ (errb, ERROR_ME_NOT))
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177 return;
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178
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179 maybe_signal_error (Qfile_error,
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180 Fcons (build_translated_string (string),
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151
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181 Fcons (lisp_strerror (errno), data)),
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0
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182 class, errb);
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183 }
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184
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185 /* signal a file error when errno does not contain a meaningful value. */
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186
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187 DOESNT_RETURN
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188 signal_file_error (CONST char *string, Lisp_Object data)
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189 {
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190 signal_error (Qfile_error,
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191 list2 (build_translated_string (string), data));
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192 }
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193
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194 void
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195 maybe_signal_file_error (CONST char *string, Lisp_Object data,
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196 Lisp_Object class, Error_behavior errb)
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197 {
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198 /* Optimization: */
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199 if (ERRB_EQ (errb, ERROR_ME_NOT))
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200 return;
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201 maybe_signal_error (Qfile_error,
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202 list2 (build_translated_string (string), data),
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203 class, errb);
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204 }
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205
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206 DOESNT_RETURN
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207 signal_double_file_error (CONST char *string1, CONST char *string2,
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208 Lisp_Object data)
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209 {
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210 signal_error (Qfile_error,
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211 list3 (build_translated_string (string1),
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212 build_translated_string (string2),
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213 data));
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214 }
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215
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216 void
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217 maybe_signal_double_file_error (CONST char *string1, CONST char *string2,
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218 Lisp_Object data, Lisp_Object class,
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219 Error_behavior errb)
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220 {
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221 /* Optimization: */
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222 if (ERRB_EQ (errb, ERROR_ME_NOT))
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223 return;
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224 maybe_signal_error (Qfile_error,
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225 list3 (build_translated_string (string1),
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226 build_translated_string (string2),
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227 data),
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228 class, errb);
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229 }
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230
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231 DOESNT_RETURN
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232 signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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233 Lisp_Object data1, Lisp_Object data2)
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234 {
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235 signal_error (Qfile_error,
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151
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236 list4 (build_translated_string (string1),
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0
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237 build_translated_string (string2),
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238 data1, data2));
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239 }
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240
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241 void
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242 maybe_signal_double_file_error_2 (CONST char *string1, CONST char *string2,
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243 Lisp_Object data1, Lisp_Object data2,
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244 Lisp_Object class, Error_behavior errb)
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245 {
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246 /* Optimization: */
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247 if (ERRB_EQ (errb, ERROR_ME_NOT))
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248 return;
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249 maybe_signal_error (Qfile_error,
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151
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250 list4 (build_translated_string (string1),
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0
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251 build_translated_string (string2),
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252 data1, data2),
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253 class, errb);
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254 }
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255
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151
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256
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257 /* Just like strerror(3), except return a lisp string instead of char *.
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258 The string needs to be converted since it may be localized.
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259 Perhaps this should use strerror-coding-system instead? */
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260 Lisp_Object
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261 lisp_strerror (int errnum)
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262 {
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263 return build_ext_string (strerror (errnum), FORMAT_NATIVE);
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264 }
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265
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0
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266 static Lisp_Object
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267 close_file_unwind (Lisp_Object fd)
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268 {
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269 if (CONSP (fd))
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270 {
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271 if (INTP (XCAR (fd)))
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272 close (XINT (XCAR (fd)));
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273
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274 free_cons (XCONS (fd));
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275 }
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276 else
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277 close (XINT (fd));
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278
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279 return Qnil;
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280 }
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281
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282 static Lisp_Object
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283 close_stream_unwind (Lisp_Object stream)
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284 {
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285 Lstream_close (XLSTREAM (stream));
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286 return Qnil;
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287 }
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288
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289 /* Restore point, having saved it as a marker. */
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290
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291 static Lisp_Object
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292 restore_point_unwind (Lisp_Object point_marker)
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293 {
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294 BUF_SET_PT (current_buffer, marker_position (point_marker));
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173
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295 return Fset_marker (point_marker, Qnil, Qnil);
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0
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296 }
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297
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298 /* Versions of read() and write() that allow quitting out of the actual
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299 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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300 signal handler) because that's way too losing.
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301
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302 (#### Actually, longjmp()ing out of the signal handler may not be
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303 as losing as I thought. See sys_do_signal() in sysdep.c.)
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304
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305 Solaris include files declare the return value as ssize_t.
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306 Is that standard? */
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307 int
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308 read_allowing_quit (int fildes, void *buf, unsigned int nbyte)
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309 {
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310 int nread;
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311 QUIT;
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312
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313 nread = sys_read_1 (fildes, buf, nbyte, 1);
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314 return nread;
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315 }
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316
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317 int
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318 write_allowing_quit (int fildes, CONST void *buf, unsigned int nbyte)
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319 {
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320 int nread;
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321
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322 QUIT;
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323 nread = sys_write_1 (fildes, buf, nbyte, 1);
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324 return nread;
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325 }
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326
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327
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328 Lisp_Object Qexpand_file_name;
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329 Lisp_Object Qfile_truename;
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330 Lisp_Object Qsubstitute_in_file_name;
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331 Lisp_Object Qdirectory_file_name;
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332 Lisp_Object Qfile_name_directory;
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333 Lisp_Object Qfile_name_nondirectory;
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334 Lisp_Object Qunhandled_file_name_directory;
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335 Lisp_Object Qfile_name_as_directory;
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336 Lisp_Object Qcopy_file;
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337 Lisp_Object Qmake_directory_internal;
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338 Lisp_Object Qdelete_directory;
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339 Lisp_Object Qdelete_file;
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340 Lisp_Object Qrename_file;
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341 Lisp_Object Qadd_name_to_file;
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342 Lisp_Object Qmake_symbolic_link;
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343 Lisp_Object Qfile_exists_p;
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344 Lisp_Object Qfile_executable_p;
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345 Lisp_Object Qfile_readable_p;
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346 Lisp_Object Qfile_symlink_p;
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347 Lisp_Object Qfile_writable_p;
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348 Lisp_Object Qfile_directory_p;
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349 Lisp_Object Qfile_regular_p;
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350 Lisp_Object Qfile_accessible_directory_p;
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351 Lisp_Object Qfile_modes;
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352 Lisp_Object Qset_file_modes;
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353 Lisp_Object Qfile_newer_than_file_p;
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354 Lisp_Object Qinsert_file_contents;
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355 Lisp_Object Qwrite_region;
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356 Lisp_Object Qverify_visited_file_modtime;
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357 Lisp_Object Qset_visited_file_modtime;
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358
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359 /* If FILENAME is handled specially on account of its syntax,
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360 return its handler function. Otherwise, return nil. */
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361
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20
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362 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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0
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363 Return FILENAME's handler function for OPERATION, if it has one.
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364 Otherwise, return nil.
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365 A file name is handled if one of the regular expressions in
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366 `file-name-handler-alist' matches it.
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367
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368 If OPERATION equals `inhibit-file-name-operation', then we ignore
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369 any handlers that are members of `inhibit-file-name-handlers',
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370 but we still do run any other handlers. This lets handlers
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371 use the standard functions without calling themselves recursively.
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20
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372 */
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373 (filename, operation))
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0
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374 {
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116
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375 /* This function does not GC */
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0
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376 /* This function must not munge the match data. */
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377 Lisp_Object chain, inhibited_handlers;
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378
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379 CHECK_STRING (filename);
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380
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381 if (EQ (operation, Vinhibit_file_name_operation))
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382 inhibited_handlers = Vinhibit_file_name_handlers;
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383 else
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384 inhibited_handlers = Qnil;
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385
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227
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386 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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0
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387 {
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388 Lisp_Object elt = XCAR (chain);
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389 if (CONSP (elt))
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390 {
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227
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391 Lisp_Object string = XCAR (elt);
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0
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392 if (STRINGP (string)
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393 && (fast_lisp_string_match (string, filename) >= 0))
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394 {
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395 Lisp_Object handler = XCDR (elt);
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396 if (NILP (Fmemq (handler, inhibited_handlers)))
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173
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397 return handler;
|
|
0
|
398 }
|
|
|
399 }
|
|
|
400 QUIT;
|
|
|
401 }
|
|
|
402 return Qnil;
|
|
|
403 }
|
|
|
404
|
|
|
405 static Lisp_Object
|
|
|
406 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
407 {
|
|
116
|
408 /* This function can call lisp */
|
|
0
|
409 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
410 CHECK_STRING (result);
|
|
173
|
411 return result;
|
|
0
|
412 }
|
|
|
413
|
|
|
414 static Lisp_Object
|
|
114
|
415 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
416 {
|
|
116
|
417 /* This function can call lisp */
|
|
114
|
418 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
419 if (!NILP (result))
|
|
|
420 CHECK_STRING (result);
|
|
173
|
421 return result;
|
|
114
|
422 }
|
|
|
423
|
|
|
424 static Lisp_Object
|
|
151
|
425 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
|
|
0
|
426 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
427 {
|
|
116
|
428 /* This function can call lisp */
|
|
0
|
429 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
|
|
|
430 CHECK_STRING (result);
|
|
173
|
431 return result;
|
|
0
|
432 }
|
|
|
433
|
|
|
434
|
|
20
|
435 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
0
|
436 Return the directory component in file name NAME.
|
|
|
437 Return nil if NAME does not include a directory.
|
|
|
438 Otherwise return a directory spec.
|
|
209
|
439 Given a Unix syntax file name, returns a string ending in slash.
|
|
20
|
440 */
|
|
|
441 (file))
|
|
0
|
442 {
|
|
120
|
443 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
444 Bufbyte *beg;
|
|
|
445 Bufbyte *p;
|
|
|
446 Lisp_Object handler;
|
|
|
447
|
|
|
448 CHECK_STRING (file);
|
|
|
449
|
|
|
450 /* If the file name has special constructs in it,
|
|
|
451 call the corresponding file handler. */
|
|
|
452 handler = Ffind_file_name_handler (file, Qfile_name_directory);
|
|
|
453 if (!NILP (handler))
|
|
173
|
454 return call2_check_string_or_nil (handler, Qfile_name_directory, file);
|
|
0
|
455
|
|
|
456 #ifdef FILE_SYSTEM_CASE
|
|
|
457 file = FILE_SYSTEM_CASE (file);
|
|
|
458 #endif
|
|
16
|
459 beg = XSTRING_DATA (file);
|
|
|
460 p = beg + XSTRING_LENGTH (file);
|
|
0
|
461
|
|
211
|
462 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
463 #ifdef DOS_NT
|
|
|
464 /* only recognise drive specifier at beginning */
|
|
|
465 && !(p[-1] == ':' && p == beg + 2)
|
|
|
466 #endif
|
|
|
467 ) p--;
|
|
0
|
468
|
|
|
469 if (p == beg)
|
|
|
470 return Qnil;
|
|
|
471 #ifdef DOS_NT
|
|
|
472 /* Expansion of "c:" to drive and default directory. */
|
|
|
473 /* (NT does the right thing.) */
|
|
|
474 if (p == beg + 2 && beg[1] == ':')
|
|
|
475 {
|
|
|
476 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
211
|
477 Bufbyte *res = alloca (MAXPATHLEN + 1);
|
|
|
478 if (getdefdir (toupper (*beg) - 'A' + 1, res))
|
|
0
|
479 {
|
|
211
|
480 if (!IS_DIRECTORY_SEP (res[strlen ((char *) res) - 1]))
|
|
0
|
481 strcat ((char *) res, "/");
|
|
|
482 beg = res;
|
|
|
483 p = beg + strlen ((char *) beg);
|
|
|
484 }
|
|
|
485 }
|
|
211
|
486 CORRECT_DIR_SEPS (beg);
|
|
0
|
487 #endif /* DOS_NT */
|
|
|
488 return make_string (beg, p - beg);
|
|
|
489 }
|
|
|
490
|
|
20
|
491 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
0
|
492 Return file name NAME sans its directory.
|
|
|
493 For example, in a Unix-syntax file name,
|
|
|
494 this is everything after the last slash,
|
|
|
495 or the entire name if it contains no slash.
|
|
20
|
496 */
|
|
|
497 (file))
|
|
0
|
498 {
|
|
120
|
499 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
500 Bufbyte *beg, *p, *end;
|
|
|
501 Lisp_Object handler;
|
|
|
502
|
|
|
503 CHECK_STRING (file);
|
|
|
504
|
|
|
505 /* If the file name has special constructs in it,
|
|
|
506 call the corresponding file handler. */
|
|
|
507 handler = Ffind_file_name_handler (file, Qfile_name_nondirectory);
|
|
|
508 if (!NILP (handler))
|
|
173
|
509 return call2_check_string (handler, Qfile_name_nondirectory, file);
|
|
0
|
510
|
|
16
|
511 beg = XSTRING_DATA (file);
|
|
|
512 end = p = beg + XSTRING_LENGTH (file);
|
|
0
|
513
|
|
211
|
514 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
|
515 #ifdef DOS_NT
|
|
|
516 /* only recognise drive specifier at beginning */
|
|
|
517 && !(p[-1] == ':' && p == beg + 2)
|
|
|
518 #endif
|
|
|
519 ) p--;
|
|
0
|
520
|
|
|
521 return make_string (p, end - p);
|
|
|
522 }
|
|
|
523
|
|
20
|
524 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
0
|
525 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
526 A `directly usable' directory name is one that may be used without the
|
|
|
527 intervention of any file handler.
|
|
|
528 If FILENAME is a directly usable file itself, return
|
|
|
529 (file-name-directory FILENAME).
|
|
|
530 The `call-process' and `start-process' functions use this function to
|
|
|
531 get a current directory to run processes in.
|
|
20
|
532 */
|
|
70
|
533 (filename))
|
|
0
|
534 {
|
|
120
|
535 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
536 Lisp_Object handler;
|
|
|
537
|
|
|
538 /* If the file name has special constructs in it,
|
|
|
539 call the corresponding file handler. */
|
|
|
540 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
541 if (!NILP (handler))
|
|
|
542 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
543 filename);
|
|
|
544
|
|
|
545 return Ffile_name_directory (filename);
|
|
|
546 }
|
|
|
547
|
|
|
548
|
|
|
549 static char *
|
|
|
550 file_name_as_directory (char *out, char *in)
|
|
|
551 {
|
|
|
552 int size = strlen (in) - 1;
|
|
|
553
|
|
|
554 strcpy (out, in);
|
|
|
555
|
|
|
556 /* For Unix syntax, Append a slash if necessary */
|
|
|
557 if (!IS_ANY_SEP (out[size]))
|
|
|
558 {
|
|
|
559 out[size + 1] = DIRECTORY_SEP;
|
|
|
560 out[size + 2] = '\0';
|
|
|
561 }
|
|
213
|
562 #ifdef DOS_NT
|
|
|
563 CORRECT_DIR_SEPS (out);
|
|
|
564 #endif
|
|
0
|
565 return out;
|
|
|
566 }
|
|
|
567
|
|
20
|
568 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
0
|
569 Return a string representing file FILENAME interpreted as a directory.
|
|
|
570 This operation exists because a directory is also a file, but its name as
|
|
|
571 a directory is different from its name as a file.
|
|
|
572 The result can be used as the value of `default-directory'
|
|
|
573 or passed as second argument to `expand-file-name'.
|
|
|
574 For a Unix-syntax file name, just appends a slash.
|
|
20
|
575 */
|
|
|
576 (file))
|
|
0
|
577 {
|
|
120
|
578 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
579 char *buf;
|
|
|
580 Lisp_Object handler;
|
|
|
581
|
|
|
582 CHECK_STRING (file);
|
|
|
583
|
|
|
584 /* If the file name has special constructs in it,
|
|
|
585 call the corresponding file handler. */
|
|
|
586 handler = Ffind_file_name_handler (file, Qfile_name_as_directory);
|
|
|
587 if (!NILP (handler))
|
|
173
|
588 return call2_check_string (handler, Qfile_name_as_directory, file);
|
|
0
|
589
|
|
16
|
590 buf = (char *) alloca (XSTRING_LENGTH (file) + 10);
|
|
0
|
591 return build_string (file_name_as_directory
|
|
16
|
592 (buf, (char *) XSTRING_DATA (file)));
|
|
0
|
593 }
|
|
|
594
|
|
|
595 /*
|
|
|
596 * Convert from directory name to filename.
|
|
211
|
597 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
0
|
598
|
|
|
599 * Value is nonzero if the string output is different from the input.
|
|
|
600 */
|
|
|
601
|
|
|
602 static int
|
|
|
603 directory_file_name (CONST char *src, char *dst)
|
|
|
604 {
|
|
|
605 long slen;
|
|
|
606
|
|
|
607 slen = strlen (src);
|
|
|
608 /* Process as Unix format: just remove any final slash.
|
|
|
609 But leave "/" unchanged; do not change it to "". */
|
|
|
610 strcpy (dst, src);
|
|
|
611 #ifdef APOLLO
|
|
|
612 /* Handle // as root for apollo's. */
|
|
|
613 if ((slen > 2 && dst[slen - 1] == '/')
|
|
|
614 || (slen > 1 && dst[0] != '/' && dst[slen - 1] == '/'))
|
|
|
615 dst[slen - 1] = 0;
|
|
|
616 #else
|
|
151
|
617 if (slen > 1
|
|
0
|
618 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
|
619 #ifdef DOS_NT
|
|
|
620 && !IS_ANY_SEP (dst[slen - 2])
|
|
211
|
621 #endif /* DOS_NT */
|
|
0
|
622 )
|
|
|
623 dst[slen - 1] = 0;
|
|
211
|
624 #endif /* APOLLO */
|
|
|
625 #ifdef DOS_NT
|
|
|
626 CORRECT_DIR_SEPS (dst);
|
|
|
627 #endif /* DOS_NT */
|
|
0
|
628 return 1;
|
|
|
629 }
|
|
|
630
|
|
20
|
631 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
0
|
632 Return the file name of the directory named DIR.
|
|
|
633 This is the name of the file that holds the data for the directory DIR.
|
|
|
634 This operation exists because a directory is also a file, but its name as
|
|
|
635 a directory is different from its name as a file.
|
|
|
636 In Unix-syntax, this function just removes the final slash.
|
|
20
|
637 */
|
|
|
638 (directory))
|
|
0
|
639 {
|
|
120
|
640 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
641 char *buf;
|
|
|
642 Lisp_Object handler;
|
|
|
643
|
|
|
644 CHECK_STRING (directory);
|
|
|
645
|
|
|
646 #if 0 /* #### WTF? */
|
|
|
647 if (NILP (directory))
|
|
|
648 return Qnil;
|
|
|
649 #endif
|
|
|
650
|
|
|
651 /* If the file name has special constructs in it,
|
|
|
652 call the corresponding file handler. */
|
|
|
653 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
654 if (!NILP (handler))
|
|
173
|
655 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
16
|
656 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
657 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
0
|
658 return build_string (buf);
|
|
|
659 }
|
|
|
660
|
|
20
|
661 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
0
|
662 Generate temporary file name (string) starting with PREFIX (a string).
|
|
|
663 The Emacs process number forms part of the result,
|
|
|
664 so there is no danger of generating a name being used by another process.
|
|
20
|
665 */
|
|
|
666 (prefix))
|
|
0
|
667 {
|
|
|
668 CONST char suffix[] = "XXXXXX";
|
|
|
669 Bufbyte *data;
|
|
|
670 Bytecount len;
|
|
|
671 Lisp_Object val;
|
|
|
672
|
|
|
673 CHECK_STRING (prefix);
|
|
16
|
674 len = XSTRING_LENGTH (prefix);
|
|
0
|
675 val = make_uninit_string (len + countof (suffix) - 1);
|
|
16
|
676 data = XSTRING_DATA (val);
|
|
|
677 memcpy (data, XSTRING_DATA (prefix), len);
|
|
0
|
678 memcpy (data + len, suffix, countof (suffix));
|
|
|
679 /* !!#### does mktemp() Mule-encapsulate? */
|
|
|
680 mktemp ((char *) data);
|
|
|
681
|
|
211
|
682 #ifdef DOS_NT
|
|
|
683 CORRECT_DIR_SEPS (XSTRING_DATA (val));
|
|
|
684 #endif /* DOS_NT */
|
|
0
|
685 return val;
|
|
|
686 }
|
|
|
687
|
|
20
|
688 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
243
|
689 Convert filename NAME to absolute, and canonicalize it.
|
|
|
690 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
691 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
0
|
692 the current buffer's value of default-directory is used.
|
|
243
|
693 File name components that are `.' are removed, and
|
|
|
694 so are file name components followed by `..', along with the `..' itself;
|
|
0
|
695 note that these simplifications are done without checking the resulting
|
|
243
|
696 file names in the file system.
|
|
0
|
697 An initial `~/' expands to your home directory.
|
|
|
698 An initial `~USER/' expands to USER's home directory.
|
|
|
699 See also the function `substitute-in-file-name'.
|
|
20
|
700 */
|
|
243
|
701 (name, default_directory))
|
|
0
|
702 {
|
|
243
|
703 /* This function can GC */
|
|
0
|
704 Bufbyte *nm;
|
|
151
|
705
|
|
0
|
706 Bufbyte *newdir, *p, *o;
|
|
|
707 int tlen;
|
|
|
708 Bufbyte *target;
|
|
|
709 struct passwd *pw;
|
|
|
710 #ifdef DOS_NT
|
|
211
|
711 int drive = 0;
|
|
|
712 int collapse_newdir = 1;
|
|
243
|
713 #endif /* DOS_NT */
|
|
211
|
714 int length;
|
|
0
|
715 Lisp_Object handler;
|
|
151
|
716
|
|
0
|
717 CHECK_STRING (name);
|
|
|
718
|
|
|
719 /* If the file name has special constructs in it,
|
|
|
720 call the corresponding file handler. */
|
|
|
721 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
722 if (!NILP (handler))
|
|
243
|
723 return call3_check_string (handler, Qexpand_file_name, name,
|
|
|
724 default_directory);
|
|
|
725
|
|
|
726 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
727 if (NILP (default_directory))
|
|
|
728 default_directory = current_buffer->directory;
|
|
|
729 if (! STRINGP (default_directory))
|
|
|
730 default_directory = build_string ("/");
|
|
|
731
|
|
|
732 if (!NILP (default_directory))
|
|
0
|
733 {
|
|
243
|
734 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
735 if (!NILP (handler))
|
|
|
736 return call3 (handler, Qexpand_file_name, name, default_directory);
|
|
0
|
737 }
|
|
243
|
738
|
|
|
739 o = XSTRING_DATA (default_directory);
|
|
|
740
|
|
|
741 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
0
|
742 It would be better to do this down below where we actually use
|
|
243
|
743 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
0
|
744 could invoke GC, and the strings might be relocated. This would
|
|
|
745 be annoying because we have pointers into strings lying around
|
|
|
746 that would need adjusting, and people would add new pointers to
|
|
|
747 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
748 Putting this call here avoids all that crud.
|
|
|
749
|
|
|
750 The EQ test avoids infinite recursion. */
|
|
243
|
751 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
211
|
752 /* Save time in some common cases - as long as default_directory
|
|
|
753 is not relative, it can be canonicalized with name below (if it
|
|
|
754 is needed at all) without requiring it to be expanded now. */
|
|
|
755 #ifdef DOS_NT
|
|
243
|
756 /* Detect MSDOS file names with drive specifiers. */
|
|
|
757 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
211
|
758 #ifdef WINDOWSNT
|
|
243
|
759 /* Detect Windows file names in UNC format. */
|
|
|
760 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
211
|
761 #endif
|
|
|
762 #else /* not DOS_NT */
|
|
243
|
763 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
|
764 DOS or Windows). */
|
|
|
765 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
211
|
766 #endif /* not DOS_NT */
|
|
243
|
767 )
|
|
0
|
768 {
|
|
|
769 struct gcpro gcpro1;
|
|
|
770
|
|
243
|
771 GCPRO1 (name);
|
|
|
772 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
0
|
773 UNGCPRO;
|
|
|
774 }
|
|
|
775
|
|
|
776 #ifdef FILE_SYSTEM_CASE
|
|
|
777 name = FILE_SYSTEM_CASE (name);
|
|
|
778 #endif
|
|
|
779
|
|
243
|
780 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
781 into name should be safe during all of this, though. */
|
|
16
|
782 nm = XSTRING_DATA (name);
|
|
151
|
783
|
|
0
|
784 #ifdef DOS_NT
|
|
211
|
785 /* We will force directory separators to be either all \ or /, so make
|
|
|
786 a local copy to modify, even if there ends up being no change. */
|
|
|
787 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
788
|
|
|
789 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
790 even if the rest of the name appears to be relative. */
|
|
0
|
791 {
|
|
|
792 Bufbyte *colon = strrchr (nm, ':');
|
|
243
|
793
|
|
0
|
794 if (colon)
|
|
211
|
795 /* Only recognize colon as part of drive specifier if there is a
|
|
|
796 single alphabetic character preceeding the colon (and if the
|
|
|
797 character before the drive letter, if present, is a directory
|
|
|
798 separator); this is to support the remote system syntax used by
|
|
|
799 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
243
|
800 look_again:
|
|
0
|
801 if (nm == colon)
|
|
|
802 nm++;
|
|
211
|
803 else if (IS_DRIVE (colon[-1])
|
|
|
804 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
0
|
805 {
|
|
|
806 drive = colon[-1];
|
|
|
807 nm = colon + 1;
|
|
211
|
808 }
|
|
|
809 else
|
|
|
810 {
|
|
|
811 while (--colon >= nm)
|
|
|
812 if (colon[0] == ':')
|
|
|
813 goto look_again;
|
|
151
|
814 }
|
|
0
|
815 }
|
|
211
|
816
|
|
|
817 #ifdef WINDOWSNT
|
|
|
818 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
819 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
820 "//somedir". */
|
|
|
821 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
822 nm++;
|
|
|
823 #endif /* WINDOWSNT */
|
|
0
|
824 #endif /* DOS_NT */
|
|
|
825
|
|
211
|
826 #ifdef WINDOWSNT
|
|
|
827 /* Discard any previous drive specifier if nm is now in UNC format. */
|
|
|
828 if (IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
829 {
|
|
|
830 drive = 0;
|
|
|
831 }
|
|
|
832 #endif /* WINDOWSNT */
|
|
|
833
|
|
|
834 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
835 found, we can probably return right away. We will avoid allocating
|
|
|
836 a new string if name is already fully expanded. */
|
|
243
|
837 if (
|
|
|
838 IS_DIRECTORY_SEP (nm[0])
|
|
|
839 #ifdef MSDOS
|
|
|
840 && drive
|
|
|
841 #endif
|
|
211
|
842 #ifdef WINDOWSNT
|
|
|
843 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
189
|
844 #endif
|
|
211
|
845 )
|
|
0
|
846 {
|
|
|
847 /* If it turns out that the filename we want to return is just a
|
|
|
848 suffix of FILENAME, we don't need to go through and edit
|
|
|
849 things; we just need to construct a new string using data
|
|
|
850 starting at the middle of FILENAME. If we set lose to a
|
|
|
851 non-zero value, that means we've discovered that we can't do
|
|
|
852 that cool trick. */
|
|
|
853 int lose = 0;
|
|
|
854
|
|
|
855 p = nm;
|
|
|
856 while (*p)
|
|
|
857 {
|
|
243
|
858 /* Since we know the name is absolute, we can assume that each
|
|
0
|
859 element starts with a "/". */
|
|
|
860
|
|
|
861 /* "." and ".." are hairy. */
|
|
|
862 if (IS_DIRECTORY_SEP (p[0])
|
|
|
863 && p[1] == '.'
|
|
|
864 && (IS_DIRECTORY_SEP (p[2])
|
|
|
865 || p[2] == 0
|
|
|
866 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
867 || p[3] == 0))))
|
|
|
868 lose = 1;
|
|
|
869 p++;
|
|
|
870 }
|
|
|
871 if (!lose)
|
|
|
872 {
|
|
211
|
873 #ifdef DOS_NT
|
|
|
874 /* Make sure directories are all separated with / or \ as
|
|
|
875 desired, but avoid allocation of a new string when not
|
|
|
876 required. */
|
|
|
877 CORRECT_DIR_SEPS (nm);
|
|
|
878 #ifdef WINDOWSNT
|
|
|
879 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
880 {
|
|
|
881 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
882 name = build_string (nm);
|
|
|
883 }
|
|
|
884 else
|
|
|
885 #endif
|
|
243
|
886 /* drive must be set, so this is okay */
|
|
|
887 if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
888 {
|
|
|
889 name = make_string (nm - 2, p - nm + 2);
|
|
|
890 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
891 XSTRING_DATA (name)[1] = ':';
|
|
|
892 }
|
|
211
|
893 return name;
|
|
|
894 #else /* not DOS_NT */
|
|
16
|
895 if (nm == XSTRING_DATA (name))
|
|
0
|
896 return name;
|
|
243
|
897 return build_string (nm);
|
|
|
898 #endif /* not DOS_NT */
|
|
0
|
899 }
|
|
|
900 }
|
|
|
901
|
|
211
|
902 /* At this point, nm might or might not be an absolute file name. We
|
|
|
903 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
904 default_directory if nm is not absolute, and finally collapse /./
|
|
|
905 and /foo/../ sequences.
|
|
|
906
|
|
|
907 We set newdir to be the appropriate prefix if one is needed:
|
|
243
|
908 - the relevant user directory if nm starts with ~ or ~user
|
|
|
909 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
910 start with /
|
|
|
911 - the value of default_directory.
|
|
211
|
912
|
|
|
913 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
914 for the working dir of a drive). Therefore, to ensure we always
|
|
|
915 return an absolute name, if the final prefix is not absolute we
|
|
|
916 append it to the current working directory. */
|
|
0
|
917
|
|
|
918 newdir = 0;
|
|
|
919
|
|
|
920 if (nm[0] == '~') /* prefix ~ */
|
|
|
921 {
|
|
|
922 if (IS_DIRECTORY_SEP (nm[1])
|
|
243
|
923 || nm[1] == 0) /* ~ by itself */
|
|
0
|
924 {
|
|
|
925 if (!(newdir = (Bufbyte *) egetenv ("HOME")))
|
|
|
926 newdir = (Bufbyte *) "";
|
|
|
927 nm++;
|
|
211
|
928 #ifdef DOS_NT
|
|
|
929 collapse_newdir = 0;
|
|
243
|
930 #endif
|
|
0
|
931 }
|
|
|
932 else /* ~user/filename */
|
|
|
933 {
|
|
209
|
934 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++);
|
|
0
|
935 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
936 memcpy (o, (char *) nm, p - nm);
|
|
|
937 o [p - nm] = 0;
|
|
|
938
|
|
243
|
939 /* #### marcpa's syncing note: FSF uses getpwnam even on NT,
|
|
|
940 which does not work. The following works only if ~USER
|
|
|
941 names the user who runs this instance of XEmacs. While
|
|
|
942 NT is single-user (for the moment) you still can have
|
|
|
943 multiple user profiles users defined, each with its HOME.
|
|
|
944 Therefore, the following should be reworked to handle
|
|
|
945 this case. */
|
|
0
|
946 #ifdef WINDOWSNT
|
|
243
|
947 /* Now if the file given is "~foo/file" and HOME="c:/", then
|
|
|
948 we want the file to be named "c:/file" ("~foo" becomes
|
|
|
949 "c:/"). The variable o has "~foo", so we can use the
|
|
|
950 length of that string to offset nm. August Hill, 31 Aug
|
|
|
951 1998. */
|
|
211
|
952 newdir = (Bufbyte *) egetenv ("HOME");
|
|
0
|
953 dostounix_filename (newdir);
|
|
195
|
954 nm += strlen(o) + 1;
|
|
0
|
955 #else /* not WINDOWSNT */
|
|
|
956 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
957 occurring in it. (It can call select()). */
|
|
|
958 slow_down_interrupts ();
|
|
|
959 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
960 speed_up_interrupts ();
|
|
|
961 if (pw)
|
|
|
962 {
|
|
|
963 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
964 nm = p;
|
|
|
965 }
|
|
|
966 #endif /* not WINDOWSNT */
|
|
|
967
|
|
|
968 /* If we don't find a user of that name, leave the name
|
|
|
969 unchanged; don't move nm forward to p. */
|
|
|
970 }
|
|
|
971 }
|
|
|
972
|
|
|
973 #ifdef DOS_NT
|
|
211
|
974 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
975 use the drive's current directory as the prefix if needed. */
|
|
|
976 if (!newdir && drive)
|
|
|
977 {
|
|
|
978 /* Get default directory if needed to make nm absolute. */
|
|
|
979 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
980 {
|
|
|
981 newdir = alloca (MAXPATHLEN + 1);
|
|
|
982 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
983 newdir = NULL;
|
|
|
984 }
|
|
|
985 if (!newdir)
|
|
|
986 {
|
|
|
987 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
988 newdir = alloca (4);
|
|
|
989 newdir[0] = DRIVE_LETTER (drive);
|
|
|
990 newdir[1] = ':';
|
|
|
991 newdir[2] = '/';
|
|
|
992 newdir[3] = 0;
|
|
|
993 }
|
|
|
994 }
|
|
0
|
995 #endif /* DOS_NT */
|
|
211
|
996
|
|
|
997 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
998 then it must be expanded relative to default_directory. */
|
|
243
|
999
|
|
211
|
1000 if (1
|
|
|
1001 #ifndef DOS_NT
|
|
243
|
1002 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1003 && !IS_DIRECTORY_SEP (nm[0])
|
|
|
1004 #endif
|
|
211
|
1005 #ifdef WINDOWSNT
|
|
|
1006 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1007 #endif
|
|
243
|
1008 && !newdir)
|
|
0
|
1009 {
|
|
243
|
1010 newdir = XSTRING_DATA (default_directory);
|
|
0
|
1011 }
|
|
|
1012
|
|
|
1013 #ifdef DOS_NT
|
|
211
|
1014 if (newdir)
|
|
|
1015 {
|
|
|
1016 /* First ensure newdir is an absolute name. */
|
|
|
1017 if (
|
|
|
1018 /* Detect MSDOS file names with drive specifiers. */
|
|
|
1019 ! (IS_DRIVE (newdir[0])
|
|
|
1020 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1021 #ifdef WINDOWSNT
|
|
|
1022 /* Detect Windows file names in UNC format. */
|
|
|
1023 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1024 #endif
|
|
|
1025 )
|
|
|
1026 {
|
|
|
1027 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1028 Because of the admonition against calling expand-file-name
|
|
|
1029 when we have pointers into lisp strings, we accomplish this
|
|
|
1030 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1031 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1032
|
|
|
1033 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1034 {
|
|
|
1035 drive = newdir[0];
|
|
|
1036 newdir += 2;
|
|
|
1037 }
|
|
|
1038 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1039 {
|
|
|
1040 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1041 file_name_as_directory (tmp, newdir);
|
|
|
1042 strcat (tmp, nm);
|
|
|
1043 nm = tmp;
|
|
|
1044 }
|
|
|
1045 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1046 if (drive)
|
|
|
1047 {
|
|
|
1048 if (!getdefdir (toupper (drive) - 'A' + 1, newdir))
|
|
|
1049 newdir = "/";
|
|
|
1050 }
|
|
|
1051 else
|
|
|
1052 getwd (newdir);
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 /* Strip off drive name from prefix, if present. */
|
|
|
1056 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1057 {
|
|
|
1058 drive = newdir[0];
|
|
|
1059 newdir += 2;
|
|
|
1060 }
|
|
|
1061
|
|
|
1062 /* Keep only a prefix from newdir if nm starts with slash
|
|
225
|
1063 (/ /server/share for UNC, nothing otherwise). */
|
|
211
|
1064 if (IS_DIRECTORY_SEP (nm[0]) && collapse_newdir)
|
|
|
1065 {
|
|
|
1066 #ifdef WINDOWSNT
|
|
|
1067 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1068 {
|
|
|
1069 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1070 p = newdir + 2;
|
|
|
1071 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1072 p++;
|
|
|
1073 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1074 *p = 0;
|
|
|
1075 }
|
|
|
1076 else
|
|
|
1077 #endif
|
|
|
1078 newdir = "";
|
|
|
1079 }
|
|
|
1080 }
|
|
0
|
1081 #endif /* DOS_NT */
|
|
243
|
1082
|
|
|
1083 if (newdir)
|
|
0
|
1084 {
|
|
211
|
1085 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1086 just // (an incomplete UNC name). */
|
|
243
|
1087 length = strlen (newdir);
|
|
|
1088 if (length > 0 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
211
|
1089 #ifdef WINDOWSNT
|
|
|
1090 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
0
|
1091 #endif
|
|
211
|
1092 )
|
|
0
|
1093 {
|
|
|
1094 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1095 memcpy (temp, newdir, length - 1);
|
|
|
1096 temp[length - 1] = 0;
|
|
|
1097 newdir = temp;
|
|
|
1098 }
|
|
|
1099 tlen = length + 1;
|
|
|
1100 }
|
|
|
1101 else
|
|
|
1102 tlen = 0;
|
|
|
1103
|
|
|
1104 /* Now concatenate the directory and name to new space in the stack frame */
|
|
243
|
1105 tlen += strlen (nm) + 1;
|
|
0
|
1106 #ifdef DOS_NT
|
|
151
|
1107 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
0
|
1108 produces incorrect code if the following two lines are combined.) */
|
|
|
1109 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1110 target += 2;
|
|
|
1111 #else /* not DOS_NT */
|
|
|
1112 target = (Bufbyte *) alloca (tlen);
|
|
243
|
1113 #endif /* not DOS_NT */
|
|
0
|
1114 *target = 0;
|
|
|
1115
|
|
|
1116 if (newdir)
|
|
|
1117 {
|
|
|
1118 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
243
|
1119 strcpy (target, newdir);
|
|
0
|
1120 else
|
|
243
|
1121 file_name_as_directory (target, newdir);
|
|
0
|
1122 }
|
|
|
1123
|
|
243
|
1124 strcat (target, nm);
|
|
|
1125
|
|
|
1126 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
0
|
1127
|
|
|
1128 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1129
|
|
|
1130 p = target;
|
|
|
1131 o = target;
|
|
|
1132
|
|
|
1133 while (*p)
|
|
|
1134 {
|
|
|
1135 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1136 {
|
|
|
1137 *o++ = *p++;
|
|
|
1138 }
|
|
|
1139 else if (IS_DIRECTORY_SEP (p[0])
|
|
243
|
1140 && p[1] == '.'
|
|
0
|
1141 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1142 || p[2] == 0))
|
|
|
1143 {
|
|
|
1144 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1145 just delete the whole "/.". */
|
|
|
1146 if (o == target && p[2] == '\0')
|
|
|
1147 *o++ = *p;
|
|
|
1148 p += 2;
|
|
|
1149 }
|
|
|
1150 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1151 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1152 && o != target
|
|
|
1153 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1154 {
|
|
|
1155 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1156 ;
|
|
243
|
1157 /* Keep initial / only if this is the whole name. */
|
|
|
1158 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
0
|
1159 ++o;
|
|
|
1160 p += 3;
|
|
|
1161 }
|
|
|
1162 else
|
|
|
1163 {
|
|
|
1164 *o++ = *p++;
|
|
|
1165 }
|
|
|
1166 }
|
|
|
1167
|
|
|
1168 #ifdef DOS_NT
|
|
211
|
1169 /* At last, set drive name. */
|
|
0
|
1170 #ifdef WINDOWSNT
|
|
211
|
1171 /* Except for network file name. */
|
|
|
1172 if (!(IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1])))
|
|
0
|
1173 #endif /* WINDOWSNT */
|
|
|
1174 {
|
|
211
|
1175 if (!drive) abort ();
|
|
0
|
1176 target -= 2;
|
|
211
|
1177 target[0] = DRIVE_LETTER (drive);
|
|
0
|
1178 target[1] = ':';
|
|
|
1179 }
|
|
211
|
1180 CORRECT_DIR_SEPS (target);
|
|
0
|
1181 #endif /* DOS_NT */
|
|
|
1182
|
|
|
1183 return make_string (target, o - target);
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 #if 0 /* FSFmacs */
|
|
227
|
1187 /* another older version of expand-file-name; */
|
|
0
|
1188 #endif
|
|
|
1189
|
|
20
|
1190 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
0
|
1191 Return the canonical name of the given FILE.
|
|
|
1192 Second arg DEFAULT is directory to start with if FILE is relative
|
|
|
1193 (does not start with slash); if DEFAULT is nil or missing,
|
|
|
1194 the current buffer's value of default-directory is used.
|
|
|
1195 No component of the resulting pathname will be a symbolic link, as
|
|
|
1196 in the realpath() function.
|
|
20
|
1197 */
|
|
173
|
1198 (filename, default_))
|
|
0
|
1199 {
|
|
120
|
1200 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1201 Lisp_Object expanded_name;
|
|
|
1202 Lisp_Object handler;
|
|
120
|
1203 struct gcpro gcpro1;
|
|
0
|
1204
|
|
|
1205 CHECK_STRING (filename);
|
|
|
1206
|
|
173
|
1207 expanded_name = Fexpand_file_name (filename, default_);
|
|
0
|
1208
|
|
|
1209 if (!STRINGP (expanded_name))
|
|
|
1210 return Qnil;
|
|
|
1211
|
|
|
1212 GCPRO1 (expanded_name);
|
|
|
1213 handler = Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1214 UNGCPRO;
|
|
|
1215
|
|
|
1216 if (!NILP (handler))
|
|
173
|
1217 return call2_check_string (handler, Qfile_truename, expanded_name);
|
|
0
|
1218
|
|
|
1219 {
|
|
|
1220 char resolved_path[MAXPATHLEN];
|
|
|
1221 char path[MAXPATHLEN];
|
|
|
1222 char *p = path;
|
|
16
|
1223 int elen = XSTRING_LENGTH (expanded_name);
|
|
151
|
1224
|
|
0
|
1225 if (elen >= countof (path))
|
|
|
1226 goto toolong;
|
|
151
|
1227
|
|
16
|
1228 memcpy (path, XSTRING_DATA (expanded_name), elen + 1);
|
|
0
|
1229 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1230
|
|
|
1231 /* Try doing it all at once. */
|
|
|
1232 /* !!#### Does realpath() Mule-encapsulate? */
|
|
|
1233 if (!realpath (path, resolved_path))
|
|
|
1234 {
|
|
|
1235 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1236 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1237 It claims to return a useful value in the "error" case, but since
|
|
|
1238 there is no indication provided of how far along the pathname
|
|
|
1239 the function went before erring, there is no way to use the
|
|
|
1240 partial result returned. What a piece of junk. */
|
|
|
1241 for (;;)
|
|
|
1242 {
|
|
|
1243 p = (char *) memchr (p + 1, '/', elen - (p + 1 - path));
|
|
|
1244 if (p)
|
|
|
1245 *p = 0;
|
|
|
1246
|
|
|
1247 /* memset (resolved_path, 0, sizeof (resolved_path)); */
|
|
|
1248 if (realpath (path, resolved_path))
|
|
|
1249 {
|
|
|
1250 if (p)
|
|
|
1251 *p = '/';
|
|
|
1252 else
|
|
|
1253 break;
|
|
|
1254
|
|
|
1255 }
|
|
209
|
1256 else if (errno == ENOENT || errno == EACCES)
|
|
0
|
1257 {
|
|
|
1258 /* Failed on this component. Just tack on the rest of
|
|
|
1259 the string and we are done. */
|
|
|
1260 int rlen = strlen (resolved_path);
|
|
|
1261
|
|
|
1262 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1263 the error, and places in resolved_path the absolute pathname
|
|
|
1264 of the path component which could not be resolved." */
|
|
|
1265 if (p)
|
|
|
1266 {
|
|
|
1267 int plen = elen - (p - path);
|
|
151
|
1268
|
|
0
|
1269 if (rlen > 1 && resolved_path[rlen - 1] == '/')
|
|
|
1270 rlen = rlen - 1;
|
|
|
1271
|
|
|
1272 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1273 goto toolong;
|
|
|
1274
|
|
|
1275 resolved_path[rlen] = '/';
|
|
|
1276 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1277 }
|
|
|
1278 break;
|
|
|
1279 }
|
|
|
1280 else
|
|
|
1281 goto lose;
|
|
|
1282 }
|
|
|
1283 }
|
|
|
1284
|
|
|
1285 {
|
|
|
1286 int rlen = strlen (resolved_path);
|
|
82
|
1287 if (elen > 0 && XSTRING_BYTE (expanded_name, elen - 1) == '/'
|
|
0
|
1288 && !(rlen > 0 && resolved_path[rlen - 1] == '/'))
|
|
|
1289 {
|
|
|
1290 if (rlen + 1 > countof (resolved_path))
|
|
|
1291 goto toolong;
|
|
|
1292 resolved_path[rlen] = '/';
|
|
|
1293 resolved_path[rlen + 1] = 0;
|
|
|
1294 rlen = rlen + 1;
|
|
|
1295 }
|
|
209
|
1296 return make_ext_string ((Bufbyte *) resolved_path, rlen, FORMAT_BINARY);
|
|
0
|
1297 }
|
|
|
1298
|
|
|
1299 toolong:
|
|
|
1300 errno = ENAMETOOLONG;
|
|
|
1301 goto lose;
|
|
|
1302 lose:
|
|
|
1303 report_file_error ("Finding truename", list1 (expanded_name));
|
|
|
1304 }
|
|
|
1305 return Qnil; /* suppress compiler warning */
|
|
|
1306 }
|
|
|
1307
|
|
|
1308
|
|
20
|
1309 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
0
|
1310 Substitute environment variables referred to in FILENAME.
|
|
|
1311 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1312 the value of that variable. The variable name should be terminated
|
|
|
1313 with a character not a letter, digit or underscore; otherwise, enclose
|
|
|
1314 the entire variable name in braces.
|
|
|
1315 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1316
|
|
20
|
1317 */
|
|
|
1318 (string))
|
|
0
|
1319 {
|
|
120
|
1320 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1321 Bufbyte *nm;
|
|
|
1322
|
|
|
1323 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1324 Bufbyte *target = 0;
|
|
|
1325 int total = 0;
|
|
|
1326 int substituted = 0;
|
|
|
1327 Bufbyte *xnm;
|
|
|
1328 Lisp_Object handler;
|
|
|
1329
|
|
|
1330 CHECK_STRING (string);
|
|
|
1331
|
|
|
1332 /* If the file name has special constructs in it,
|
|
|
1333 call the corresponding file handler. */
|
|
|
1334 handler = Ffind_file_name_handler (string, Qsubstitute_in_file_name);
|
|
|
1335 if (!NILP (handler))
|
|
173
|
1336 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
|
1337 string);
|
|
0
|
1338
|
|
16
|
1339 nm = XSTRING_DATA (string);
|
|
211
|
1340 #ifdef DOS_NT
|
|
|
1341 nm = strcpy (alloca (strlen (nm) + 1), nm);
|
|
|
1342 CORRECT_DIR_SEPS (nm);
|
|
|
1343 substituted = (strcmp (nm, XSTRING_DATA (string)) != 0);
|
|
0
|
1344 #endif
|
|
16
|
1345 endp = nm + XSTRING_LENGTH (string);
|
|
0
|
1346
|
|
|
1347 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1348
|
|
|
1349 for (p = nm; p != endp; p++)
|
|
|
1350 {
|
|
211
|
1351 if ((p[0] == '~'
|
|
|
1352 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
|
1353 /* // at start of file name is meaningful in Apollo and
|
|
|
1354 WindowsNT systems */
|
|
|
1355 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
|
1356 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1357 || IS_DIRECTORY_SEP (p[0])
|
|
|
1358 #endif /* not (APOLLO || WINDOWSNT) */
|
|
0
|
1359 )
|
|
|
1360 && p != nm
|
|
209
|
1361 && (IS_DIRECTORY_SEP (p[-1])))
|
|
0
|
1362 {
|
|
|
1363 nm = p;
|
|
|
1364 substituted = 1;
|
|
|
1365 }
|
|
|
1366 #ifdef DOS_NT
|
|
211
|
1367 /* see comment in expand-file-name about drive specifiers */
|
|
|
1368 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1369 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1370 {
|
|
|
1371 nm = p;
|
|
|
1372 substituted = 1;
|
|
|
1373 }
|
|
|
1374 #endif /* DOS_NT */
|
|
|
1375 }
|
|
|
1376
|
|
|
1377 /* See if any variables are substituted into the string
|
|
|
1378 and find the total length of their values in `total' */
|
|
|
1379
|
|
|
1380 for (p = nm; p != endp;)
|
|
|
1381 if (*p != '$')
|
|
|
1382 p++;
|
|
|
1383 else
|
|
|
1384 {
|
|
|
1385 p++;
|
|
|
1386 if (p == endp)
|
|
|
1387 goto badsubst;
|
|
|
1388 else if (*p == '$')
|
|
|
1389 {
|
|
|
1390 /* "$$" means a single "$" */
|
|
|
1391 p++;
|
|
|
1392 total -= 1;
|
|
|
1393 substituted = 1;
|
|
|
1394 continue;
|
|
|
1395 }
|
|
|
1396 else if (*p == '{')
|
|
|
1397 {
|
|
|
1398 o = ++p;
|
|
|
1399 while (p != endp && *p != '}') p++;
|
|
|
1400 if (*p != '}') goto missingclose;
|
|
|
1401 s = p;
|
|
|
1402 }
|
|
|
1403 else
|
|
|
1404 {
|
|
|
1405 o = p;
|
|
|
1406 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1407 s = p;
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 /* Copy out the variable name */
|
|
|
1411 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1412 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1413 target[s - o] = 0;
|
|
|
1414 #ifdef DOS_NT
|
|
|
1415 strupr (target); /* $home == $HOME etc. */
|
|
|
1416 #endif /* DOS_NT */
|
|
|
1417
|
|
|
1418 /* Get variable value */
|
|
|
1419 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1420 if (!o) goto badvar;
|
|
|
1421 total += strlen ((char *) o);
|
|
|
1422 substituted = 1;
|
|
|
1423 }
|
|
|
1424
|
|
|
1425 if (!substituted)
|
|
|
1426 return string;
|
|
|
1427
|
|
|
1428 /* If substitution required, recopy the string and do it */
|
|
|
1429 /* Make space in stack frame for the new copy */
|
|
16
|
1430 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (string) + total + 1);
|
|
0
|
1431 x = xnm;
|
|
|
1432
|
|
|
1433 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1434 for (p = nm; *p;)
|
|
|
1435 if (*p != '$')
|
|
|
1436 *x++ = *p++;
|
|
|
1437 else
|
|
|
1438 {
|
|
|
1439 p++;
|
|
|
1440 if (p == endp)
|
|
|
1441 goto badsubst;
|
|
|
1442 else if (*p == '$')
|
|
|
1443 {
|
|
|
1444 *x++ = *p++;
|
|
|
1445 continue;
|
|
|
1446 }
|
|
|
1447 else if (*p == '{')
|
|
|
1448 {
|
|
|
1449 o = ++p;
|
|
|
1450 while (p != endp && *p != '}') p++;
|
|
|
1451 if (*p != '}') goto missingclose;
|
|
|
1452 s = p++;
|
|
|
1453 }
|
|
|
1454 else
|
|
|
1455 {
|
|
|
1456 o = p;
|
|
|
1457 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1458 s = p;
|
|
|
1459 }
|
|
|
1460
|
|
|
1461 /* Copy out the variable name */
|
|
|
1462 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1463 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1464 target[s - o] = 0;
|
|
|
1465 #ifdef DOS_NT
|
|
|
1466 strupr (target); /* $home == $HOME etc. */
|
|
|
1467 #endif /* DOS_NT */
|
|
|
1468
|
|
|
1469 /* Get variable value */
|
|
|
1470 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1471 if (!o)
|
|
|
1472 goto badvar;
|
|
|
1473
|
|
|
1474 strcpy ((char *) x, (char *) o);
|
|
|
1475 x += strlen ((char *) o);
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 *x = 0;
|
|
|
1479
|
|
|
1480 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1481
|
|
|
1482 for (p = xnm; p != x; p++)
|
|
|
1483 if ((p[0] == '~'
|
|
211
|
1484 #if defined (APOLLO) || defined (WINDOWSNT)
|
|
0
|
1485 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
211
|
1486 #else /* not (APOLLO || WINDOWSNT) */
|
|
|
1487 || IS_DIRECTORY_SEP (p[0])
|
|
|
1488 #endif /* APOLLO || WINDOWSNT */
|
|
0
|
1489 )
|
|
|
1490 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1491 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1492 xnm = p;
|
|
|
1493 #ifdef DOS_NT
|
|
211
|
1494 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1495 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
0
|
1496 xnm = p;
|
|
|
1497 #endif
|
|
|
1498
|
|
|
1499 return make_string (xnm, x - xnm);
|
|
|
1500
|
|
|
1501 badsubst:
|
|
|
1502 error ("Bad format environment-variable substitution");
|
|
|
1503 missingclose:
|
|
|
1504 error ("Missing \"}\" in environment-variable substitution");
|
|
|
1505 badvar:
|
|
|
1506 error ("Substituting nonexistent environment variable \"%s\"",
|
|
|
1507 target);
|
|
|
1508
|
|
|
1509 /* NOTREACHED */
|
|
|
1510 return Qnil; /* suppress compiler warning */
|
|
|
1511 }
|
|
|
1512
|
|
211
|
1513 /* A slightly faster and more convenient way to get
|
|
|
1514 (directory-file-name (expand-file-name FOO)). */
|
|
0
|
1515
|
|
|
1516 Lisp_Object
|
|
|
1517 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1518 {
|
|
116
|
1519 /* This function can call lisp */
|
|
0
|
1520 Lisp_Object abspath;
|
|
|
1521 struct gcpro gcpro1;
|
|
|
1522
|
|
|
1523 abspath = Fexpand_file_name (filename, defdir);
|
|
116
|
1524 GCPRO1 (abspath);
|
|
0
|
1525 /* Remove final slash, if any (unless path is root).
|
|
|
1526 stat behaves differently depending! */
|
|
16
|
1527 if (XSTRING_LENGTH (abspath) > 1
|
|
82
|
1528 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1529 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
0
|
1530 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1531 abspath = Fdirectory_file_name (abspath);
|
|
|
1532 UNGCPRO;
|
|
|
1533 return abspath;
|
|
|
1534 }
|
|
|
1535
|
|
|
1536 /* Signal an error if the file ABSNAME already exists.
|
|
|
1537 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1538 and bypass the error if the user says to go ahead.
|
|
|
1539 QUERYSTRING is a name for the action that is being considered
|
|
|
1540 to alter the file.
|
|
|
1541 *STATPTR is used to store the stat information if the file exists.
|
|
|
1542 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1543
|
|
|
1544 static void
|
|
|
1545 barf_or_query_if_file_exists (Lisp_Object absname, CONST char *querystring,
|
|
|
1546 int interactive, struct stat *statptr)
|
|
|
1547 {
|
|
120
|
1548 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1549 struct stat statbuf;
|
|
|
1550
|
|
|
1551 /* stat is a good way to tell whether the file exists,
|
|
|
1552 regardless of what access permissions it has. */
|
|
16
|
1553 if (stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
0
|
1554 {
|
|
|
1555 Lisp_Object tem;
|
|
116
|
1556
|
|
0
|
1557 if (interactive)
|
|
116
|
1558 {
|
|
|
1559 Lisp_Object prompt;
|
|
|
1560 struct gcpro gcpro1;
|
|
|
1561
|
|
|
1562 prompt = emacs_doprnt_string_c
|
|
0
|
1563 ((CONST Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
16
|
1564 Qnil, -1, XSTRING_DATA (absname),
|
|
116
|
1565 GETTEXT (querystring));
|
|
151
|
1566
|
|
116
|
1567 GCPRO1 (prompt);
|
|
|
1568 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1569 UNGCPRO;
|
|
|
1570 }
|
|
0
|
1571 else
|
|
|
1572 tem = Qnil;
|
|
116
|
1573
|
|
0
|
1574 if (NILP (tem))
|
|
|
1575 Fsignal (Qfile_already_exists,
|
|
|
1576 list2 (build_translated_string ("File already exists"),
|
|
|
1577 absname));
|
|
|
1578 if (statptr)
|
|
|
1579 *statptr = statbuf;
|
|
|
1580 }
|
|
|
1581 else
|
|
|
1582 {
|
|
|
1583 if (statptr)
|
|
|
1584 statptr->st_mode = 0;
|
|
|
1585 }
|
|
|
1586 return;
|
|
|
1587 }
|
|
|
1588
|
|
20
|
1589 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1590 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
0
|
1591 Copy FILE to NEWNAME. Both args must be strings.
|
|
|
1592 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1593 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1594 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1595 This is what happens in interactive use with M-x.
|
|
|
1596 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1597 last-modified time as the old one. (This works on only some systems.)
|
|
|
1598 A prefix arg makes KEEP-TIME non-nil.
|
|
20
|
1599 */
|
|
74
|
1600 (filename, newname, ok_if_already_exists, keep_time))
|
|
0
|
1601 {
|
|
120
|
1602 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1603 int ifd, ofd, n;
|
|
|
1604 char buf[16 * 1024];
|
|
|
1605 struct stat st, out_st;
|
|
|
1606 Lisp_Object handler;
|
|
|
1607 int speccount = specpdl_depth ();
|
|
|
1608 struct gcpro gcpro1, gcpro2;
|
|
|
1609 /* Lisp_Object args[6]; */
|
|
|
1610 int input_file_statable_p;
|
|
|
1611
|
|
|
1612 GCPRO2 (filename, newname);
|
|
|
1613 CHECK_STRING (filename);
|
|
|
1614 CHECK_STRING (newname);
|
|
|
1615 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1616 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1617
|
|
|
1618 /* If the input file name has special constructs in it,
|
|
|
1619 call the corresponding file handler. */
|
|
|
1620 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1621 /* Likewise for output file name. */
|
|
|
1622 if (NILP (handler))
|
|
|
1623 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1624 if (!NILP (handler))
|
|
|
1625 {
|
|
|
1626 UNGCPRO;
|
|
|
1627 return call5 (handler, Qcopy_file, filename, newname,
|
|
74
|
1628 ok_if_already_exists, keep_time);
|
|
0
|
1629 }
|
|
|
1630
|
|
|
1631 /* When second argument is a directory, copy the file into it.
|
|
|
1632 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1633 */
|
|
|
1634 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1635 {
|
|
|
1636 Lisp_Object args[3];
|
|
|
1637 struct gcpro ngcpro1;
|
|
|
1638 int i = 1;
|
|
|
1639
|
|
151
|
1640 args[0] = newname;
|
|
0
|
1641 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1642 NGCPRO1 (*args);
|
|
0
|
1643 ngcpro1.nvars = 3;
|
|
82
|
1644 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1645 args[i++] = build_string ("/");
|
|
|
1646 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1647 newname = Fconcat (i, args);
|
|
|
1648 NUNGCPRO;
|
|
|
1649 }
|
|
|
1650
|
|
|
1651 if (NILP (ok_if_already_exists)
|
|
|
1652 || INTP (ok_if_already_exists))
|
|
|
1653 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1654 INTP (ok_if_already_exists), &out_st);
|
|
16
|
1655 else if (stat ((CONST char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
0
|
1656 out_st.st_mode = 0;
|
|
|
1657
|
|
225
|
1658 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY, 0);
|
|
0
|
1659 if (ifd < 0)
|
|
227
|
1660 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
1661
|
|
|
1662 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1663
|
|
|
1664 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1665 copyable by us. */
|
|
|
1666 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1667
|
|
|
1668 #ifndef DOS_NT
|
|
|
1669 if (out_st.st_mode != 0
|
|
|
1670 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1671 {
|
|
|
1672 errno = 0;
|
|
|
1673 report_file_error ("Input and output files are the same",
|
|
227
|
1674 list2 (filename, newname));
|
|
0
|
1675 }
|
|
|
1676 #endif
|
|
|
1677
|
|
|
1678 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1679 if (input_file_statable_p)
|
|
|
1680 {
|
|
|
1681 if (!(S_ISREG (st.st_mode))
|
|
|
1682 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1683 #ifdef S_ISCHR
|
|
|
1684 && !(S_ISCHR (st.st_mode))
|
|
|
1685 #endif
|
|
|
1686 && !(S_ISLNK (st.st_mode)))
|
|
|
1687 {
|
|
|
1688 #if defined (EISDIR)
|
|
|
1689 /* Get a better looking error message. */
|
|
|
1690 errno = EISDIR;
|
|
|
1691 #endif /* EISDIR */
|
|
227
|
1692 report_file_error ("Non-regular file", list1 (filename));
|
|
0
|
1693 }
|
|
|
1694 }
|
|
|
1695 #endif /* S_ISREG && S_ISLNK */
|
|
|
1696
|
|
|
1697 #ifdef MSDOS
|
|
|
1698 /* System's default file type was set to binary by _fmode in emacs.c. */
|
|
16
|
1699 ofd = creat ((char *) XSTRING_DATA (newname), S_IREAD | S_IWRITE);
|
|
0
|
1700 #else /* not MSDOS */
|
|
16
|
1701 ofd = creat ((char *) XSTRING_DATA (newname), 0666);
|
|
0
|
1702 #endif /* not MSDOS */
|
|
|
1703 if (ofd < 0)
|
|
|
1704 report_file_error ("Opening output file", list1 (newname));
|
|
|
1705
|
|
|
1706 {
|
|
|
1707 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1708
|
|
|
1709 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1710
|
|
|
1711 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1712 {
|
|
|
1713 if (write_allowing_quit (ofd, buf, n) != n)
|
|
|
1714 report_file_error ("I/O error", list1 (newname));
|
|
|
1715 }
|
|
|
1716
|
|
|
1717 /* Closing the output clobbers the file times on some systems. */
|
|
|
1718 if (close (ofd) < 0)
|
|
227
|
1719 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1720
|
|
|
1721 if (input_file_statable_p)
|
|
|
1722 {
|
|
74
|
1723 if (!NILP (keep_time))
|
|
0
|
1724 {
|
|
|
1725 EMACS_TIME atime, mtime;
|
|
|
1726 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1727 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
16
|
1728 if (set_file_times ((char *) XSTRING_DATA (newname), atime,
|
|
0
|
1729 mtime))
|
|
227
|
1730 report_file_error ("I/O error", list1 (newname));
|
|
0
|
1731 }
|
|
|
1732 #ifndef MSDOS
|
|
16
|
1733 chmod ((CONST char *) XSTRING_DATA (newname),
|
|
0
|
1734 st.st_mode & 07777);
|
|
|
1735 #else /* MSDOS */
|
|
|
1736 #if defined (__DJGPP__) && __DJGPP__ > 1
|
|
|
1737 /* In DJGPP v2.0 and later, fstat usually returns true file mode bits,
|
|
|
1738 and if it can't, it tells so. Otherwise, under MSDOS we usually
|
|
|
1739 get only the READ bit, which will make the copied file read-only,
|
|
|
1740 so it's better not to chmod at all. */
|
|
|
1741 if ((_djstat_flags & _STFAIL_WRITEBIT) == 0)
|
|
16
|
1742 chmod ((char *) XSTRING_DATA (newname), st.st_mode & 07777);
|
|
0
|
1743 #endif /* DJGPP version 2 or newer */
|
|
|
1744 #endif /* MSDOS */
|
|
|
1745 }
|
|
|
1746
|
|
|
1747 /* We'll close it by hand */
|
|
|
1748 XCAR (ofd_locative) = Qnil;
|
|
|
1749
|
|
|
1750 /* Close ifd */
|
|
|
1751 unbind_to (speccount, Qnil);
|
|
|
1752 }
|
|
|
1753
|
|
|
1754 UNGCPRO;
|
|
|
1755 return Qnil;
|
|
|
1756 }
|
|
|
1757
|
|
20
|
1758 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
0
|
1759 Create a directory. One argument, a file name string.
|
|
20
|
1760 */
|
|
173
|
1761 (dirname_))
|
|
0
|
1762 {
|
|
120
|
1763 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1764 char dir [MAXPATHLEN];
|
|
|
1765 Lisp_Object handler;
|
|
|
1766 struct gcpro gcpro1;
|
|
151
|
1767
|
|
173
|
1768 CHECK_STRING (dirname_);
|
|
|
1769 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1770
|
|
|
1771 GCPRO1 (dirname_);
|
|
|
1772 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
0
|
1773 UNGCPRO;
|
|
|
1774 if (!NILP (handler))
|
|
173
|
1775 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1776
|
|
|
1777 if (XSTRING_LENGTH (dirname_) > (sizeof (dir) - 1))
|
|
0
|
1778 {
|
|
|
1779 return Fsignal (Qfile_error,
|
|
|
1780 list3 (build_translated_string ("Creating directory"),
|
|
|
1781 build_translated_string ("pathame too long"),
|
|
173
|
1782 dirname_));
|
|
0
|
1783 }
|
|
173
|
1784 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1785 XSTRING_LENGTH (dirname_) + 1);
|
|
0
|
1786
|
|
173
|
1787 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1788 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
0
|
1789
|
|
|
1790 #ifdef WINDOWSNT
|
|
|
1791 if (mkdir (dir) != 0)
|
|
|
1792 #else
|
|
|
1793 if (mkdir (dir, 0777) != 0)
|
|
|
1794 #endif
|
|
173
|
1795 report_file_error ("Creating directory", list1 (dirname_));
|
|
0
|
1796
|
|
|
1797 return Qnil;
|
|
|
1798 }
|
|
|
1799
|
|
20
|
1800 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
0
|
1801 Delete a directory. One argument, a file name or directory name string.
|
|
20
|
1802 */
|
|
173
|
1803 (dirname_))
|
|
0
|
1804 {
|
|
120
|
1805 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1806 Lisp_Object handler;
|
|
|
1807 struct gcpro gcpro1;
|
|
151
|
1808
|
|
173
|
1809 CHECK_STRING (dirname_);
|
|
|
1810
|
|
|
1811 GCPRO1 (dirname_);
|
|
|
1812 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1813 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1814
|
|
|
1815 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
0
|
1816 UNGCPRO;
|
|
|
1817 if (!NILP (handler))
|
|
173
|
1818 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1819
|
|
|
1820 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
|
1821 report_file_error ("Removing directory", list1 (dirname_));
|
|
0
|
1822
|
|
|
1823 return Qnil;
|
|
|
1824 }
|
|
|
1825
|
|
20
|
1826 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
0
|
1827 Delete specified file. One argument, a file name string.
|
|
|
1828 If file has multiple names, it continues to exist with the other names.
|
|
20
|
1829 */
|
|
|
1830 (filename))
|
|
0
|
1831 {
|
|
120
|
1832 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1833 Lisp_Object handler;
|
|
|
1834 struct gcpro gcpro1;
|
|
151
|
1835
|
|
0
|
1836 CHECK_STRING (filename);
|
|
|
1837 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1838
|
|
114
|
1839 GCPRO1 (filename);
|
|
0
|
1840 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1841 UNGCPRO;
|
|
|
1842 if (!NILP (handler))
|
|
|
1843 return call2 (handler, Qdelete_file, filename);
|
|
|
1844
|
|
16
|
1845 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
0
|
1846 report_file_error ("Removing old name", list1 (filename));
|
|
|
1847 return Qnil;
|
|
|
1848 }
|
|
|
1849
|
|
|
1850 static Lisp_Object
|
|
|
1851 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1852 {
|
|
|
1853 return Qt;
|
|
|
1854 }
|
|
|
1855
|
|
|
1856 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1857
|
|
|
1858 int
|
|
|
1859 internal_delete_file (Lisp_Object filename)
|
|
|
1860 {
|
|
120
|
1861 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1862 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1863 internal_delete_file_1, Qnil));
|
|
|
1864 }
|
|
|
1865
|
|
20
|
1866 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1867 "fRename file: \nFRename %s to file: \np", /*
|
|
0
|
1868 Rename FILE as NEWNAME. Both args strings.
|
|
|
1869 If file has names other than FILE, it continues to have those names.
|
|
|
1870 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1871 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1872 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1873 This is what happens in interactive use with M-x.
|
|
20
|
1874 */
|
|
|
1875 (filename, newname, ok_if_already_exists))
|
|
0
|
1876 {
|
|
120
|
1877 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1878 Lisp_Object handler;
|
|
|
1879 struct gcpro gcpro1, gcpro2;
|
|
|
1880
|
|
|
1881 GCPRO2 (filename, newname);
|
|
|
1882 CHECK_STRING (filename);
|
|
|
1883 CHECK_STRING (newname);
|
|
|
1884 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1885 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1886
|
|
|
1887 /* If the file name has special constructs in it,
|
|
|
1888 call the corresponding file handler. */
|
|
|
1889 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1890 if (NILP (handler))
|
|
|
1891 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1892 if (!NILP (handler))
|
|
|
1893 {
|
|
|
1894 UNGCPRO;
|
|
|
1895 return call4 (handler, Qrename_file,
|
|
|
1896 filename, newname, ok_if_already_exists);
|
|
|
1897 }
|
|
|
1898
|
|
|
1899 /* When second argument is a directory, rename the file into it.
|
|
|
1900 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1901 */
|
|
|
1902 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1903 {
|
|
|
1904 Lisp_Object args[3];
|
|
|
1905 struct gcpro ngcpro1;
|
|
|
1906 int i = 1;
|
|
|
1907
|
|
151
|
1908 args[0] = newname;
|
|
0
|
1909 args[1] = Qnil; args[2] = Qnil;
|
|
151
|
1910 NGCPRO1 (*args);
|
|
0
|
1911 ngcpro1.nvars = 3;
|
|
16
|
1912 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
0
|
1913 args[i++] = build_string ("/");
|
|
|
1914 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1915 newname = Fconcat (i, args);
|
|
|
1916 NUNGCPRO;
|
|
|
1917 }
|
|
|
1918
|
|
|
1919 if (NILP (ok_if_already_exists)
|
|
|
1920 || INTP (ok_if_already_exists))
|
|
|
1921 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1922 INTP (ok_if_already_exists), 0);
|
|
|
1923
|
|
211
|
1924 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
|
1925 WINDOWSNT here; I've removed it. --marcpa */
|
|
|
1926
|
|
0
|
1927 /* FSFmacs only calls rename() here under BSD 4.1, and calls
|
|
|
1928 link() and unlink() otherwise, but that's bogus. Sometimes
|
|
|
1929 rename() succeeds where link()/unlink() fail, and we have
|
|
|
1930 configure check for rename() and emulate using link()/unlink()
|
|
|
1931 if necessary. */
|
|
16
|
1932 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1933 (char *) XSTRING_DATA (newname)))
|
|
0
|
1934 {
|
|
|
1935 if (errno == EXDEV)
|
|
|
1936 {
|
|
|
1937 Fcopy_file (filename, newname,
|
|
|
1938 /* We have already prompted if it was an integer,
|
|
|
1939 so don't have copy-file prompt again. */
|
|
|
1940 ((NILP (ok_if_already_exists)) ? Qnil : Qt),
|
|
|
1941 Qt);
|
|
|
1942 Fdelete_file (filename);
|
|
|
1943 }
|
|
|
1944 else
|
|
|
1945 {
|
|
|
1946 report_file_error ("Renaming", list2 (filename, newname));
|
|
|
1947 }
|
|
|
1948 }
|
|
|
1949 UNGCPRO;
|
|
|
1950 return Qnil;
|
|
|
1951 }
|
|
|
1952
|
|
20
|
1953 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
1954 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
0
|
1955 Give FILE additional name NEWNAME. Both args strings.
|
|
|
1956 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1957 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1958 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1959 This is what happens in interactive use with M-x.
|
|
20
|
1960 */
|
|
|
1961 (filename, newname, ok_if_already_exists))
|
|
0
|
1962 {
|
|
120
|
1963 /* This function can GC. GC checked 1997.04.06. */
|
|
0
|
1964 Lisp_Object handler;
|
|
|
1965 struct gcpro gcpro1, gcpro2;
|
|
|
1966
|
|
|
1967 GCPRO2 (filename, newname);
|
|
|
1968 CHECK_STRING (filename);
|
|
|
1969 CHECK_STRING (newname);
|
|
|
1970 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1971 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1972
|
|
|
1973 /* If the file name has special constructs in it,
|
|
|
1974 call the corresponding file handler. */
|
|
|
1975 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
1976 if (!NILP (handler))
|
|
|
1977 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
1978 newname, ok_if_already_exists));
|
|
|
1979
|
|
|
1980 /* If the new name has special constructs in it,
|
|
|
1981 call the corresponding file handler. */
|
|
|
1982 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
1983 if (!NILP (handler))
|
|
|
1984 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
1985 newname, ok_if_already_exists));
|
|
|
1986
|
|
|
1987 if (NILP (ok_if_already_exists)
|
|
|
1988 || INTP (ok_if_already_exists))
|
|
|
1989 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
1990 INTP (ok_if_already_exists), 0);
|
|
211
|
1991 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
1992 on NT here. --marcpa */
|
|
213
|
1993 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
1994 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
1995 Reverted to previous behaviour pending a working fix. (jhar) */
|
|
|
1996 #if defined(WINDOWSNT)
|
|
0
|
1997 /* Windows does not support this operation. */
|
|
|
1998 report_file_error ("Adding new name", Flist (2, &filename));
|
|
213
|
1999 #else /* not defined(WINDOWSNT) */
|
|
0
|
2000
|
|
16
|
2001 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2002 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2003 (char *) XSTRING_DATA (newname)))
|
|
0
|
2004 {
|
|
|
2005 report_file_error ("Adding new name",
|
|
|
2006 list2 (filename, newname));
|
|
|
2007 }
|
|
213
|
2008 #endif /* defined(WINDOWSNT) */
|
|
0
|
2009
|
|
|
2010 UNGCPRO;
|
|
|
2011 return Qnil;
|
|
|
2012 }
|
|
|
2013
|
|
|
2014 #ifdef S_IFLNK
|
|
20
|
2015 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2016 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
0
|
2017 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2018 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2019 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2020 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2021 This happens for interactive use with M-x.
|
|
20
|
2022 */
|
|
|
2023 (filename, linkname, ok_if_already_exists))
|
|
0
|
2024 {
|
|
120
|
2025 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
2026 Lisp_Object handler;
|
|
|
2027 struct gcpro gcpro1, gcpro2;
|
|
|
2028
|
|
|
2029 GCPRO2 (filename, linkname);
|
|
|
2030 CHECK_STRING (filename);
|
|
|
2031 CHECK_STRING (linkname);
|
|
|
2032 /* If the link target has a ~, we must expand it to get
|
|
|
2033 a truly valid file name. Otherwise, do not expand;
|
|
|
2034 we want to permit links to relative file names. */
|
|
211
|
2035 if (XSTRING_BYTE (filename, 0) == '~')
|
|
0
|
2036 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2037 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2038
|
|
|
2039 /* If the file name has special constructs in it,
|
|
|
2040 call the corresponding file handler. */
|
|
|
2041 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2042 if (!NILP (handler))
|
|
|
2043 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2044 ok_if_already_exists));
|
|
|
2045
|
|
|
2046 /* If the new link name has special constructs in it,
|
|
|
2047 call the corresponding file handler. */
|
|
|
2048 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2049 if (!NILP (handler))
|
|
|
2050 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2051 linkname, ok_if_already_exists));
|
|
|
2052
|
|
|
2053 if (NILP (ok_if_already_exists)
|
|
|
2054 || INTP (ok_if_already_exists))
|
|
|
2055 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2056 INTP (ok_if_already_exists), 0);
|
|
|
2057
|
|
16
|
2058 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2059 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2060 (char *) XSTRING_DATA (linkname)))
|
|
0
|
2061 {
|
|
|
2062 report_file_error ("Making symbolic link",
|
|
|
2063 list2 (filename, linkname));
|
|
|
2064 }
|
|
|
2065 UNGCPRO;
|
|
|
2066 return Qnil;
|
|
|
2067 }
|
|
|
2068 #endif /* S_IFLNK */
|
|
|
2069
|
|
|
2070 #ifdef HPUX_NET
|
|
|
2071
|
|
20
|
2072 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
0
|
2073 Open a network connection to PATH using LOGIN as the login string.
|
|
20
|
2074 */
|
|
|
2075 (path, login))
|
|
0
|
2076 {
|
|
|
2077 int netresult;
|
|
151
|
2078
|
|
0
|
2079 CHECK_STRING (path);
|
|
151
|
2080 CHECK_STRING (login);
|
|
0
|
2081
|
|
|
2082 /* netunam, being a strange-o system call only used once, is not
|
|
|
2083 encapsulated. */
|
|
|
2084 {
|
|
|
2085 char *path_ext;
|
|
|
2086 char *login_ext;
|
|
|
2087
|
|
|
2088 GET_C_STRING_FILENAME_DATA_ALLOCA (path, path_ext);
|
|
|
2089 GET_C_STRING_EXT_DATA_ALLOCA (login, FORMAT_OS, login_ext);
|
|
151
|
2090
|
|
0
|
2091 netresult = netunam (path_ext, login_ext);
|
|
|
2092 }
|
|
|
2093
|
|
|
2094 if (netresult == -1)
|
|
|
2095 return Qnil;
|
|
|
2096 else
|
|
|
2097 return Qt;
|
|
|
2098 }
|
|
|
2099 #endif /* HPUX_NET */
|
|
|
2100
|
|
20
|
2101 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
0
|
2102 Return t if file FILENAME specifies an absolute path name.
|
|
|
2103 On Unix, this is a name starting with a `/' or a `~'.
|
|
20
|
2104 */
|
|
|
2105 (filename))
|
|
0
|
2106 {
|
|
116
|
2107 /* This function does not GC */
|
|
0
|
2108 Bufbyte *ptr;
|
|
|
2109
|
|
|
2110 CHECK_STRING (filename);
|
|
16
|
2111 ptr = XSTRING_DATA (filename);
|
|
0
|
2112 if (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
|
2113 #ifdef DOS_NT
|
|
211
|
2114 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
0
|
2115 #endif
|
|
|
2116 )
|
|
|
2117 return Qt;
|
|
|
2118 else
|
|
|
2119 return Qnil;
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2123
|
|
|
2124 static int
|
|
|
2125 check_executable (char *filename)
|
|
|
2126 {
|
|
|
2127 #ifdef DOS_NT
|
|
|
2128 int len = strlen (filename);
|
|
|
2129 char *suffix;
|
|
|
2130 struct stat st;
|
|
|
2131 if (stat (filename, &st) < 0)
|
|
|
2132 return 0;
|
|
211
|
2133 #if defined (WINDOWSNT)
|
|
|
2134 return ((st.st_mode & S_IEXEC) != 0);
|
|
|
2135 #else
|
|
0
|
2136 return (S_ISREG (st.st_mode)
|
|
|
2137 && len >= 5
|
|
|
2138 && (stricmp ((suffix = filename + len-4), ".com") == 0
|
|
|
2139 || stricmp (suffix, ".exe") == 0
|
|
|
2140 || stricmp (suffix, ".bat") == 0)
|
|
|
2141 || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
211
|
2142 #endif /* not WINDOWSNT */
|
|
0
|
2143 #else /* not DOS_NT */
|
|
|
2144 #ifdef HAVE_EACCESS
|
|
183
|
2145 return eaccess (filename, 1) >= 0;
|
|
0
|
2146 #else
|
|
|
2147 /* Access isn't quite right because it uses the real uid
|
|
|
2148 and we really want to test with the effective uid.
|
|
|
2149 But Unix doesn't give us a right way to do it. */
|
|
183
|
2150 return access (filename, 1) >= 0;
|
|
|
2151 #endif /* HAVE_EACCESS */
|
|
0
|
2152 #endif /* not DOS_NT */
|
|
|
2153 }
|
|
|
2154
|
|
|
2155 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2156
|
|
|
2157 static int
|
|
|
2158 check_writable (CONST char *filename)
|
|
|
2159 {
|
|
|
2160 #ifdef MSDOS
|
|
|
2161 struct stat st;
|
|
|
2162 if (stat (filename, &st) < 0)
|
|
|
2163 return 0;
|
|
|
2164 return (st.st_mode & S_IWRITE || (st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
2165 #else /* not MSDOS */
|
|
|
2166 #ifdef HAVE_EACCESS
|
|
|
2167 return (eaccess (filename, 2) >= 0);
|
|
|
2168 #else
|
|
|
2169 /* Access isn't quite right because it uses the real uid
|
|
|
2170 and we really want to test with the effective uid.
|
|
|
2171 But Unix doesn't give us a right way to do it.
|
|
|
2172 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2173 but would lose for directories. */
|
|
|
2174 return (access (filename, 2) >= 0);
|
|
|
2175 #endif
|
|
|
2176 #endif /* not MSDOS */
|
|
|
2177 }
|
|
|
2178
|
|
20
|
2179 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
0
|
2180 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2181 See also `file-readable-p' and `file-attributes'.
|
|
20
|
2182 */
|
|
|
2183 (filename))
|
|
0
|
2184 {
|
|
116
|
2185 /* This function can call lisp */
|
|
0
|
2186 Lisp_Object abspath;
|
|
|
2187 Lisp_Object handler;
|
|
|
2188 struct stat statbuf;
|
|
|
2189 struct gcpro gcpro1;
|
|
151
|
2190
|
|
0
|
2191 CHECK_STRING (filename);
|
|
|
2192 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2193
|
|
|
2194 /* If the file name has special constructs in it,
|
|
|
2195 call the corresponding file handler. */
|
|
|
2196 GCPRO1 (abspath);
|
|
|
2197 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2198 UNGCPRO;
|
|
|
2199 if (!NILP (handler))
|
|
|
2200 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2201
|
|
16
|
2202 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
0
|
2203 return (Qt);
|
|
|
2204 else
|
|
|
2205 return (Qnil);
|
|
|
2206 }
|
|
|
2207
|
|
20
|
2208 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
0
|
2209 Return t if FILENAME can be executed by you.
|
|
|
2210 For a directory, this means you can access files in that directory.
|
|
20
|
2211 */
|
|
|
2212 (filename))
|
|
70
|
2213
|
|
0
|
2214 {
|
|
124
|
2215 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2216 Lisp_Object abspath;
|
|
|
2217 Lisp_Object handler;
|
|
|
2218 struct gcpro gcpro1;
|
|
151
|
2219
|
|
0
|
2220 CHECK_STRING (filename);
|
|
|
2221 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2222
|
|
|
2223 /* If the file name has special constructs in it,
|
|
|
2224 call the corresponding file handler. */
|
|
|
2225 GCPRO1 (abspath);
|
|
|
2226 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2227 UNGCPRO;
|
|
|
2228 if (!NILP (handler))
|
|
|
2229 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2230
|
|
16
|
2231 return (check_executable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2232 ? Qt : Qnil);
|
|
|
2233 }
|
|
|
2234
|
|
20
|
2235 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
0
|
2236 Return t if file FILENAME exists and you can read it.
|
|
|
2237 See also `file-exists-p' and `file-attributes'.
|
|
20
|
2238 */
|
|
|
2239 (filename))
|
|
0
|
2240 {
|
|
225
|
2241 /* This function can GC */
|
|
|
2242 Lisp_Object abspath = Qnil;
|
|
0
|
2243 Lisp_Object handler;
|
|
|
2244 int desc;
|
|
|
2245 struct gcpro gcpro1;
|
|
225
|
2246 GCPRO1 (abspath);
|
|
151
|
2247
|
|
0
|
2248 CHECK_STRING (filename);
|
|
|
2249 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2250
|
|
|
2251 /* If the file name has special constructs in it,
|
|
|
2252 call the corresponding file handler. */
|
|
|
2253 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2254 if (!NILP (handler))
|
|
225
|
2255 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
0
|
2256
|
|
211
|
2257 #ifdef DOS_NT
|
|
|
2258 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2259 if (access (XSTRING_DATA (abspath), 0) == 0)
|
|
|
2260 return Qt;
|
|
|
2261 return Qnil;
|
|
|
2262 #else /* not DOS_NT */
|
|
225
|
2263 desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY, 0);
|
|
|
2264 UNGCPRO;
|
|
0
|
2265 if (desc < 0)
|
|
|
2266 return Qnil;
|
|
|
2267 close (desc);
|
|
|
2268 return Qt;
|
|
211
|
2269 #endif /* not DOS_NT */
|
|
0
|
2270 }
|
|
|
2271
|
|
|
2272 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2273 on the RT/PC. */
|
|
20
|
2274 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
0
|
2275 Return t if file FILENAME can be written or created by you.
|
|
20
|
2276 */
|
|
|
2277 (filename))
|
|
0
|
2278 {
|
|
124
|
2279 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2280 Lisp_Object abspath, dir;
|
|
|
2281 Lisp_Object handler;
|
|
|
2282 struct stat statbuf;
|
|
|
2283 struct gcpro gcpro1;
|
|
151
|
2284
|
|
0
|
2285 CHECK_STRING (filename);
|
|
|
2286 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2287
|
|
|
2288 /* If the file name has special constructs in it,
|
|
|
2289 call the corresponding file handler. */
|
|
|
2290 GCPRO1 (abspath);
|
|
|
2291 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2292 UNGCPRO;
|
|
|
2293 if (!NILP (handler))
|
|
|
2294 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2295
|
|
16
|
2296 if (stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
|
2297 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
0
|
2298 ? Qt : Qnil);
|
|
|
2299
|
|
|
2300
|
|
114
|
2301 GCPRO1 (abspath);
|
|
0
|
2302 dir = Ffile_name_directory (abspath);
|
|
114
|
2303 UNGCPRO;
|
|
209
|
2304 #ifdef MSDOS
|
|
0
|
2305 if (!NILP (dir))
|
|
114
|
2306 {
|
|
|
2307 GCPRO1(dir);
|
|
|
2308 dir = Fdirectory_file_name (dir);
|
|
|
2309 UNGCPRO;
|
|
|
2310 }
|
|
209
|
2311 #endif /* MSDOS */
|
|
16
|
2312 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
0
|
2313 : "")
|
|
|
2314 ? Qt : Qnil);
|
|
|
2315 }
|
|
|
2316
|
|
20
|
2317 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
0
|
2318 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2319 The value is the name of the file to which it is linked.
|
|
|
2320 Otherwise returns nil.
|
|
20
|
2321 */
|
|
|
2322 (filename))
|
|
0
|
2323 {
|
|
124
|
2324 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2325 #ifdef S_IFLNK
|
|
|
2326 char *buf;
|
|
|
2327 int bufsize;
|
|
|
2328 int valsize;
|
|
|
2329 Lisp_Object val;
|
|
|
2330 Lisp_Object handler;
|
|
|
2331 struct gcpro gcpro1;
|
|
151
|
2332
|
|
0
|
2333 CHECK_STRING (filename);
|
|
|
2334 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2335
|
|
|
2336 /* If the file name has special constructs in it,
|
|
|
2337 call the corresponding file handler. */
|
|
116
|
2338 GCPRO1 (filename);
|
|
0
|
2339 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
116
|
2340 UNGCPRO;
|
|
0
|
2341 if (!NILP (handler))
|
|
|
2342 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2343
|
|
|
2344 bufsize = 100;
|
|
|
2345 while (1)
|
|
|
2346 {
|
|
185
|
2347 buf = xnew_array_and_zero (char, bufsize);
|
|
16
|
2348 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
0
|
2349 buf, bufsize);
|
|
|
2350 if (valsize < bufsize) break;
|
|
|
2351 /* Buffer was not long enough */
|
|
|
2352 xfree (buf);
|
|
|
2353 bufsize *= 2;
|
|
|
2354 }
|
|
|
2355 if (valsize == -1)
|
|
|
2356 {
|
|
|
2357 xfree (buf);
|
|
|
2358 return Qnil;
|
|
|
2359 }
|
|
|
2360 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2361 xfree (buf);
|
|
|
2362 return val;
|
|
|
2363 #else /* not S_IFLNK */
|
|
|
2364 return Qnil;
|
|
|
2365 #endif /* not S_IFLNK */
|
|
|
2366 }
|
|
|
2367
|
|
20
|
2368 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
0
|
2369 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2370 A directory name spec may be given instead; then the value is t
|
|
|
2371 if the directory so specified exists and really is a directory.
|
|
20
|
2372 */
|
|
|
2373 (filename))
|
|
0
|
2374 {
|
|
124
|
2375 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2376 Lisp_Object abspath;
|
|
|
2377 struct stat st;
|
|
|
2378 Lisp_Object handler;
|
|
|
2379 struct gcpro gcpro1;
|
|
151
|
2380
|
|
114
|
2381 GCPRO1 (current_buffer->directory);
|
|
0
|
2382 abspath = expand_and_dir_to_file (filename,
|
|
|
2383 current_buffer->directory);
|
|
|
2384 UNGCPRO;
|
|
|
2385
|
|
|
2386 /* If the file name has special constructs in it,
|
|
|
2387 call the corresponding file handler. */
|
|
|
2388 GCPRO1 (abspath);
|
|
|
2389 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2390 UNGCPRO;
|
|
|
2391 if (!NILP (handler))
|
|
|
2392 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2393
|
|
16
|
2394 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2395 return Qnil;
|
|
|
2396 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2397 }
|
|
|
2398
|
|
20
|
2399 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
0
|
2400 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2401 and files in that directory can be opened by you. In order to use a
|
|
|
2402 directory as a buffer's current directory, this predicate must return true.
|
|
|
2403 A directory name spec may be given instead; then the value is t
|
|
|
2404 if the directory so specified exists and really is a readable and
|
|
|
2405 searchable directory.
|
|
20
|
2406 */
|
|
|
2407 (filename))
|
|
0
|
2408 {
|
|
124
|
2409 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2410 Lisp_Object handler;
|
|
|
2411
|
|
|
2412 /* If the file name has special constructs in it,
|
|
|
2413 call the corresponding file handler. */
|
|
|
2414 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2415 if (!NILP (handler))
|
|
|
2416 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2417 filename);
|
|
|
2418
|
|
211
|
2419 #if !defined(DOS_NT)
|
|
0
|
2420 if (NILP (Ffile_directory_p (filename)))
|
|
|
2421 return (Qnil);
|
|
116
|
2422 else
|
|
|
2423 return Ffile_executable_p (filename);
|
|
211
|
2424 #else
|
|
|
2425 {
|
|
|
2426 int tem;
|
|
|
2427 struct gcpro gcpro1;
|
|
|
2428 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2429 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2430 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2431 relocates the string in `filename'; and finally file-directory-p
|
|
|
2432 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2433 to file-executable-p. */
|
|
|
2434 GCPRO1 (filename);
|
|
|
2435 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2436 || NILP (Ffile_executable_p (filename)));
|
|
|
2437 UNGCPRO;
|
|
|
2438 return tem ? Qnil : Qt;
|
|
|
2439 }
|
|
|
2440 #endif /* !defined(DOS_NT) */
|
|
0
|
2441 }
|
|
|
2442
|
|
20
|
2443 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
0
|
2444 "Return t if file FILENAME is the name of a regular file.
|
|
|
2445 This is the sort of file that holds an ordinary stream of data bytes.
|
|
20
|
2446 */
|
|
|
2447 (filename))
|
|
0
|
2448 {
|
|
124
|
2449 /* This function can GC. GC checked 1997.04.10. */
|
|
114
|
2450 Lisp_Object abspath;
|
|
0
|
2451 struct stat st;
|
|
|
2452 Lisp_Object handler;
|
|
114
|
2453 struct gcpro gcpro1;
|
|
|
2454
|
|
|
2455 GCPRO1 (current_buffer->directory);
|
|
0
|
2456 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
114
|
2457 UNGCPRO;
|
|
0
|
2458
|
|
|
2459 /* If the file name has special constructs in it,
|
|
|
2460 call the corresponding file handler. */
|
|
114
|
2461 GCPRO1 (abspath);
|
|
0
|
2462 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
114
|
2463 UNGCPRO;
|
|
0
|
2464 if (!NILP (handler))
|
|
|
2465 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2466
|
|
16
|
2467 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2468 return Qnil;
|
|
|
2469 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2470 }
|
|
|
2471
|
|
20
|
2472 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
0
|
2473 Return mode bits of FILE, as an integer.
|
|
20
|
2474 */
|
|
|
2475 (filename))
|
|
0
|
2476 {
|
|
124
|
2477 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2478 Lisp_Object abspath;
|
|
|
2479 struct stat st;
|
|
|
2480 Lisp_Object handler;
|
|
|
2481 struct gcpro gcpro1;
|
|
151
|
2482
|
|
114
|
2483 GCPRO1 (current_buffer->directory);
|
|
0
|
2484 abspath = expand_and_dir_to_file (filename,
|
|
|
2485 current_buffer->directory);
|
|
|
2486 UNGCPRO;
|
|
|
2487
|
|
|
2488 /* If the file name has special constructs in it,
|
|
|
2489 call the corresponding file handler. */
|
|
|
2490 GCPRO1 (abspath);
|
|
|
2491 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2492 UNGCPRO;
|
|
|
2493 if (!NILP (handler))
|
|
|
2494 return call2 (handler, Qfile_modes, abspath);
|
|
|
2495
|
|
16
|
2496 if (stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
0
|
2497 return Qnil;
|
|
211
|
2498 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2499 #if 0
|
|
0
|
2500 #ifdef DOS_NT
|
|
100
|
2501 if (check_executable (XSTRING (abspath)->_data))
|
|
0
|
2502 st.st_mode |= S_IEXEC;
|
|
|
2503 #endif /* DOS_NT */
|
|
211
|
2504 #endif /* 0 */
|
|
0
|
2505
|
|
|
2506 return make_int (st.st_mode & 07777);
|
|
|
2507 }
|
|
|
2508
|
|
20
|
2509 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
0
|
2510 Set mode bits of FILE to MODE (an integer).
|
|
|
2511 Only the 12 low bits of MODE are used.
|
|
20
|
2512 */
|
|
|
2513 (filename, mode))
|
|
0
|
2514 {
|
|
124
|
2515 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2516 Lisp_Object abspath;
|
|
|
2517 Lisp_Object handler;
|
|
114
|
2518 struct gcpro gcpro1;
|
|
151
|
2519
|
|
114
|
2520 GCPRO1 (current_buffer->directory);
|
|
0
|
2521 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
116
|
2522 UNGCPRO;
|
|
|
2523
|
|
70
|
2524 CHECK_INT (mode);
|
|
44
|
2525
|
|
0
|
2526 /* If the file name has special constructs in it,
|
|
|
2527 call the corresponding file handler. */
|
|
|
2528 GCPRO1 (abspath);
|
|
|
2529 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2530 UNGCPRO;
|
|
|
2531 if (!NILP (handler))
|
|
|
2532 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2533
|
|
16
|
2534 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
227
|
2535 report_file_error ("Doing chmod", list1 (abspath));
|
|
0
|
2536
|
|
|
2537 return Qnil;
|
|
|
2538 }
|
|
|
2539
|
|
20
|
2540 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
0
|
2541 Set the file permission bits for newly created files.
|
|
|
2542 MASK should be an integer; if a permission's bit in MASK is 1,
|
|
|
2543 subsequently created files will not have that permission enabled.
|
|
|
2544 Only the low 9 bits are used.
|
|
|
2545 This setting is inherited by subprocesses.
|
|
20
|
2546 */
|
|
|
2547 (mode))
|
|
0
|
2548 {
|
|
|
2549 CHECK_INT (mode);
|
|
151
|
2550
|
|
0
|
2551 umask ((~ XINT (mode)) & 0777);
|
|
|
2552
|
|
|
2553 return Qnil;
|
|
|
2554 }
|
|
|
2555
|
|
20
|
2556 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
0
|
2557 Return the default file protection for created files.
|
|
|
2558 The umask value determines which permissions are enabled in newly
|
|
|
2559 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2560 created files will not have that permission enabled.
|
|
20
|
2561 */
|
|
|
2562 ())
|
|
0
|
2563 {
|
|
|
2564 int mode;
|
|
|
2565
|
|
|
2566 mode = umask (0);
|
|
|
2567 umask (mode);
|
|
|
2568
|
|
|
2569 return make_int ((~ mode) & 0777);
|
|
|
2570 }
|
|
|
2571
|
|
20
|
2572 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
0
|
2573 Tell Unix to finish all pending disk updates.
|
|
20
|
2574 */
|
|
|
2575 ())
|
|
0
|
2576 {
|
|
100
|
2577 #ifndef WINDOWSNT
|
|
0
|
2578 sync ();
|
|
100
|
2579 #endif
|
|
0
|
2580 return Qnil;
|
|
|
2581 }
|
|
|
2582
|
|
|
2583
|
|
20
|
2584 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
0
|
2585 Return t if file FILE1 is newer than file FILE2.
|
|
|
2586 If FILE1 does not exist, the answer is nil;
|
|
|
2587 otherwise, if FILE2 does not exist, the answer is t.
|
|
20
|
2588 */
|
|
|
2589 (file1, file2))
|
|
0
|
2590 {
|
|
124
|
2591 /* This function can GC. GC checked 1997.04.10. */
|
|
0
|
2592 Lisp_Object abspath1, abspath2;
|
|
|
2593 struct stat st;
|
|
|
2594 int mtime1;
|
|
|
2595 Lisp_Object handler;
|
|
114
|
2596 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
0
|
2597
|
|
|
2598 CHECK_STRING (file1);
|
|
|
2599 CHECK_STRING (file2);
|
|
|
2600
|
|
|
2601 abspath1 = Qnil;
|
|
114
|
2602 abspath2 = Qnil;
|
|
|
2603
|
|
|
2604 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2605 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2606 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
0
|
2607
|
|
|
2608 /* If the file name has special constructs in it,
|
|
|
2609 call the corresponding file handler. */
|
|
|
2610 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2611 if (NILP (handler))
|
|
|
2612 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2613 UNGCPRO;
|
|
|
2614 if (!NILP (handler))
|
|
|
2615 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2616 abspath2);
|
|
|
2617
|
|
16
|
2618 if (stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
0
|
2619 return Qnil;
|
|
|
2620
|
|
|
2621 mtime1 = st.st_mtime;
|
|
|
2622
|
|
16
|
2623 if (stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
0
|
2624 return Qt;
|
|
|
2625
|
|
|
2626 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2627 }
|
|
|
2628
|
|
|
2629
|
|
|
2630 #ifdef DOS_NT
|
|
|
2631 Lisp_Object Qfind_buffer_file_type;
|
|
211
|
2632
|
|
|
2633 /* Return 1 if buffer is text, 0 if binary. */
|
|
|
2634 static int
|
|
|
2635 decide_buffer_type (unsigned char * buffer, int nbytes)
|
|
|
2636 {
|
|
|
2637 /* Buffer is binary if we find any LF chars not preceeded by CR or if
|
|
|
2638 the buffer doesn't contain at least 1 line. */
|
|
|
2639 unsigned lines = 0;
|
|
|
2640 unsigned char *p, *q;
|
|
|
2641
|
|
|
2642 for (p = buffer; nbytes > 0 && (q = memchr (p, '\n', nbytes)) != NULL;
|
|
|
2643 p = q + 1 )
|
|
|
2644 {
|
|
|
2645 nbytes -= (q + 1 - p);
|
|
|
2646 lines++;
|
|
|
2647 if (q > buffer && q[-1] != '\r')
|
|
|
2648 return 0;
|
|
|
2649 }
|
|
|
2650
|
|
|
2651 /* If we haven't seen any line endings yet, return -1 (meaning type is
|
|
|
2652 undecided) so we can examine the next bufferful as well. */
|
|
|
2653 return (lines > 0) ? 1 : -1;
|
|
|
2654 }
|
|
|
2655
|
|
|
2656 /* XEmacs addition: like decide_buffer_type(), but working on a XEmacs buffer:
|
|
|
2657 first arg is a byte index position instead of a char pointer;
|
|
|
2658 we check each char sequentially. --marcpa */
|
|
|
2659 static int
|
|
|
2660 buf_decide_buffer_type (struct buffer *buf, Bytind start, int nbytes)
|
|
|
2661 {
|
|
|
2662 /* Buffer is binary if we find any LF chars not preceeded by CR or if
|
|
|
2663 the buffer doesn't contain at least 1 line. */
|
|
|
2664 unsigned lines = 0;
|
|
|
2665 Bytind cur = start;
|
|
|
2666
|
|
|
2667 while (nbytes)
|
|
|
2668 {
|
|
|
2669 if (BI_BUF_FETCH_CHAR(buf, cur) == '\n')
|
|
|
2670 {
|
|
|
2671 lines++;
|
|
|
2672 if (cur != start && BI_BUF_FETCH_CHAR(buf, cur - 1) != '\r')
|
|
|
2673 return 0;
|
|
|
2674 }
|
|
|
2675 nbytes--;
|
|
|
2676 }
|
|
|
2677
|
|
|
2678 /* If we haven't seen any line endings yet, return -1 (meaning type is
|
|
|
2679 undecided) so we can examine the next bufferful as well. */
|
|
|
2680 return (lines > 0) ? 1 : -1;
|
|
|
2681 }
|
|
0
|
2682 #endif /* DOS_NT */
|
|
|
2683
|
|
2
|
2684 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2685 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2686 #define READ_BUF_SIZE (1 << 15)
|
|
0
|
2687
|
|
20
|
2688 DEFUN ("insert-file-contents-internal",
|
|
70
|
2689 Finsert_file_contents_internal, 1, 7, 0, /*
|
|
|
2690 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2691 This function is identical to `insert-file-contents' except for the
|
|
|
2692 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2693 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2694 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2695
|
|
|
2696 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2697 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2698 it should be a symbol, and the actual coding system that was used for the
|
|
|
2699 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2700 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2701
|
|
|
2702 Currently BEG and END refer to byte positions (as opposed to character
|
|
|
2703 positions), even in Mule. (Fixing this is very difficult.)
|
|
20
|
2704 */
|
|
70
|
2705 (filename, visit, beg, end, replace, codesys, used_codesys))
|
|
0
|
2706 {
|
|
116
|
2707 /* This function can call lisp */
|
|
|
2708 /* #### dmoore - this function hasn't been checked for gc recently */
|
|
0
|
2709 struct stat st;
|
|
|
2710 int fd;
|
|
|
2711 int saverrno = 0;
|
|
|
2712 Charcount inserted = 0;
|
|
|
2713 int speccount;
|
|
114
|
2714 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
0
|
2715 Lisp_Object handler = Qnil, val;
|
|
|
2716 int total;
|
|
|
2717 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2718 int mc_count;
|
|
|
2719 struct buffer *buf = current_buffer;
|
|
114
|
2720 Lisp_Object curbuf;
|
|
0
|
2721 int not_regular = 0;
|
|
211
|
2722 #ifdef DOS_NT
|
|
|
2723 int crlf_conversion_required = 0;
|
|
|
2724 unsigned crlf_count = 0;
|
|
|
2725 unsigned lf_count = 0;
|
|
|
2726 #endif
|
|
0
|
2727
|
|
|
2728 if (buf->base_buffer && ! NILP (visit))
|
|
|
2729 error ("Cannot do file visiting in an indirect buffer");
|
|
|
2730
|
|
|
2731 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2732 That's called in begin_multiple_change() or wherever. */
|
|
|
2733
|
|
|
2734 val = Qnil;
|
|
|
2735
|
|
114
|
2736 /* #### dmoore - should probably check in various places to see if
|
|
|
2737 curbuf was killed and if so signal an error? */
|
|
|
2738
|
|
|
2739 XSETBUFFER (curbuf, buf);
|
|
|
2740
|
|
|
2741 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
151
|
2742
|
|
0
|
2743 mc_count = (NILP (replace)) ?
|
|
|
2744 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2745 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2746
|
|
|
2747 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2748 an unwind_protect */
|
|
|
2749
|
|
|
2750 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2751
|
|
|
2752 /* If the file name has special constructs in it,
|
|
|
2753 call the corresponding file handler. */
|
|
|
2754 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2755 if (!NILP (handler))
|
|
|
2756 {
|
|
74
|
2757 val = call6 (handler, Qinsert_file_contents, filename,
|
|
|
2758 visit, beg, end, replace);
|
|
0
|
2759 goto handled;
|
|
|
2760 }
|
|
|
2761
|
|
70
|
2762 #ifdef MULE
|
|
|
2763 if (!NILP (used_codesys))
|
|
|
2764 CHECK_SYMBOL (used_codesys);
|
|
|
2765 #endif
|
|
|
2766
|
|
0
|
2767 if ( (!NILP (beg) || !NILP (end)) && !NILP (visit) )
|
|
|
2768 error ("Attempt to visit less than an entire file");
|
|
151
|
2769
|
|
0
|
2770 fd = -1;
|
|
|
2771
|
|
225
|
2772 if (
|
|
0
|
2773 #ifndef APOLLO
|
|
225
|
2774 (stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
0
|
2775 #else /* APOLLO */
|
|
225
|
2776 /* Don't even bother with interruptible_open. APOLLO sucks. */
|
|
|
2777 ((fd = open ((char *) XSTRING_DATA (filename), O_RDONLY, 0)) < 0
|
|
|
2778 || fstat (fd, &st) < 0)
|
|
0
|
2779 #endif /* APOLLO */
|
|
225
|
2780 )
|
|
0
|
2781 {
|
|
|
2782 if (fd >= 0) close (fd);
|
|
|
2783 badopen:
|
|
|
2784 if (NILP (visit))
|
|
227
|
2785 report_file_error ("Opening input file", list1 (filename));
|
|
0
|
2786 st.st_mtime = -1;
|
|
|
2787 goto notfound;
|
|
|
2788 }
|
|
|
2789
|
|
|
2790 #ifdef S_IFREG
|
|
209
|
2791 /* Signal an error if we are accessing a non-regular file, with
|
|
|
2792 REPLACE, BEG or END being non-nil. */
|
|
0
|
2793 if (!S_ISREG (st.st_mode))
|
|
|
2794 {
|
|
173
|
2795 not_regular = 1;
|
|
|
2796
|
|
|
2797 if (!NILP (visit))
|
|
|
2798 goto notfound;
|
|
|
2799
|
|
|
2800 if (!NILP (replace) || !NILP (beg) || !NILP (end))
|
|
0
|
2801 {
|
|
|
2802 end_multiple_change (buf, mc_count);
|
|
|
2803
|
|
|
2804 return Fsignal (Qfile_error,
|
|
|
2805 list2 (build_translated_string("not a regular file"),
|
|
|
2806 filename));
|
|
|
2807 }
|
|
|
2808 }
|
|
183
|
2809 #endif /* S_IFREG */
|
|
0
|
2810
|
|
173
|
2811 if (!NILP (beg))
|
|
|
2812 CHECK_INT (beg);
|
|
|
2813 else
|
|
|
2814 beg = Qzero;
|
|
|
2815
|
|
|
2816 if (!NILP (end))
|
|
|
2817 CHECK_INT (end);
|
|
|
2818
|
|
0
|
2819 if (fd < 0)
|
|
225
|
2820 {
|
|
|
2821 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2822 O_RDONLY, 0)) < 0)
|
|
|
2823 goto badopen;
|
|
|
2824 }
|
|
0
|
2825
|
|
|
2826 /* Replacement should preserve point as it preserves markers. */
|
|
|
2827 if (!NILP (replace))
|
|
|
2828 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2829
|
|
|
2830 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2831
|
|
|
2832 /* Supposedly happens on VMS. */
|
|
|
2833 if (st.st_size < 0)
|
|
|
2834 error ("File size is negative");
|
|
|
2835
|
|
|
2836 if (NILP (end))
|
|
|
2837 {
|
|
173
|
2838 if (!not_regular)
|
|
|
2839 {
|
|
|
2840 end = make_int (st.st_size);
|
|
|
2841 if (XINT (end) != st.st_size)
|
|
|
2842 error ("Maximum buffer size exceeded");
|
|
|
2843 }
|
|
211
|
2844
|
|
|
2845 #ifdef DOS_NT
|
|
|
2846 /* Permit old behaviour if desired. */
|
|
|
2847 if (NILP (Vinsert_file_contents_allow_replace) && !NILP (replace))
|
|
|
2848 {
|
|
|
2849 replace = Qnil;
|
|
|
2850 /* Surely this was never right! */
|
|
|
2851 /* XSETFASTINT (beg, 0);
|
|
|
2852 XSETFASTINT (end, st.st_size); */
|
|
|
2853 buffer_delete_range (buf, BUF_BEGV(buf), BUF_ZV(buf),
|
|
|
2854 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2855 }
|
|
|
2856 #endif /* DOS_NT */
|
|
0
|
2857 }
|
|
|
2858
|
|
|
2859 /* If requested, replace the accessible part of the buffer
|
|
|
2860 with the file contents. Avoid replacing text at the
|
|
|
2861 beginning or end of the buffer that matches the file contents;
|
|
|
2862 that preserves markers pointing to the unchanged parts. */
|
|
211
|
2863 #if !defined (MULE)
|
|
0
|
2864 /* The replace-mode code currently only works when the assumption
|
|
211
|
2865 'one byte == one char' holds true. This fails Mule because
|
|
|
2866 files may contain multibyte characters. It holds under Windows NT
|
|
|
2867 provided we convert CRLF into LF. */
|
|
0
|
2868 # define FSFMACS_SPEEDY_INSERT
|
|
|
2869 #endif
|
|
|
2870 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2871 if (!NILP (replace))
|
|
|
2872 {
|
|
|
2873 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2874 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2875 }
|
|
|
2876 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2877 if (!NILP (replace))
|
|
|
2878 {
|
|
|
2879 char buffer[1 << 14];
|
|
|
2880 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2881 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2882 int overlap;
|
|
211
|
2883 #ifdef DOS_NT
|
|
|
2884 /* Syncing with 19.34.6 note: same_at_start_in_file and
|
|
|
2885 same_at_end_in_file are not in XEmacs 20.4.
|
|
|
2886 First try to introduce them as-is and see what happens.
|
|
|
2887 Might be necessary to use constructs like
|
|
|
2888 st.st_size - (BUF_ZV (buf) - same_at_end)
|
|
|
2889 instead.
|
|
|
2890 --marcpa
|
|
|
2891 */
|
|
|
2892 /* Offset into the file where discrepancy begins. */
|
|
|
2893 int same_at_start_in_file = 0;
|
|
|
2894 /* Offset into the file where discrepancy ends. */
|
|
|
2895 int same_at_end_in_file = st.st_size;
|
|
|
2896 /* DOS_NT only: is there a `\r' character left in the buffer? */
|
|
|
2897 int cr_left_in_buffer = 0;
|
|
|
2898 /* DOS_NT only: was `\n' the first character in previous bufferful? */
|
|
|
2899 int last_was_lf = 0;
|
|
|
2900
|
|
|
2901 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
2902 /* Determine file type (text/binary) from its name.
|
|
|
2903 Note that the buffer_file_type changes here when the file
|
|
|
2904 being inserted is not of the same type as the original buffer. */
|
|
|
2905 current_buffer->buffer_file_type = call1 (Qfind_buffer_file_type, filename);
|
|
|
2906 if (NILP (current_buffer->buffer_file_type))
|
|
|
2907 crlf_conversion_required = 1;
|
|
|
2908 else if (current_buffer->buffer_file_type != Qt)
|
|
|
2909 /* Use heuristic to decide whether file is text or binary (based
|
|
|
2910 on the first bufferful) if buffer-file-type is not nil or t.
|
|
|
2911 If no decision is made (because no line endings were ever
|
|
|
2912 seen) then let buffer-file-type default to nil. */
|
|
|
2913 crlf_conversion_required = -1;
|
|
|
2914 #endif /* DOS_NT */
|
|
0
|
2915
|
|
|
2916 /* Count how many chars at the start of the file
|
|
|
2917 match the text at the beginning of the buffer. */
|
|
|
2918 while (1)
|
|
|
2919 {
|
|
|
2920 int nread;
|
|
|
2921 Bufpos bufpos;
|
|
211
|
2922 #ifdef DOS_NT
|
|
|
2923 if (cr_left_in_buffer)
|
|
|
2924 {
|
|
|
2925 nread = read_allowing_quit (fd, buffer + 1, sizeof(buffer) - 1);
|
|
|
2926 cr_left_in_buffer = 0;
|
|
|
2927 if (nread >= 0)
|
|
|
2928 nread++;
|
|
|
2929 }
|
|
|
2930 else
|
|
|
2931 #endif /* DOS_NT */
|
|
0
|
2932 nread = read_allowing_quit (fd, buffer, sizeof buffer);
|
|
|
2933 if (nread < 0)
|
|
|
2934 error ("IO error reading %s: %s",
|
|
16
|
2935 XSTRING_DATA (filename), strerror (errno));
|
|
0
|
2936 else if (nread == 0)
|
|
|
2937 break;
|
|
|
2938 bufpos = 0;
|
|
211
|
2939 #ifdef DOS_NT
|
|
|
2940 /* If requested, we do a simple check on the first bufferful
|
|
|
2941 to decide whether the file is binary or text. (If text, we
|
|
|
2942 count LF and CRLF occurences to determine whether the file
|
|
|
2943 was in Unix or DOS format.) */
|
|
|
2944 if (crlf_conversion_required < 0)
|
|
|
2945 {
|
|
|
2946 crlf_conversion_required = decide_buffer_type (buffer, nread);
|
|
|
2947 current_buffer->buffer_file_type =
|
|
|
2948 crlf_conversion_required ? Qnil : Qt;
|
|
|
2949 }
|
|
|
2950
|
|
|
2951 /* DOS_NT text files require that we ignore a `\r' before a `\n'. */
|
|
|
2952 if (crlf_conversion_required > 0)
|
|
|
2953 while (bufpos < nread && same_at_start < BUF_ZV (buf))
|
|
|
2954 {
|
|
|
2955 int filec = buffer[bufpos];
|
|
|
2956 int bufc = BUF_FETCH_CHAR (buf, same_at_start);
|
|
|
2957
|
|
|
2958 if (filec == '\n')
|
|
|
2959 lf_count++;
|
|
|
2960
|
|
|
2961 if (filec == bufc)
|
|
|
2962 same_at_start++, bufpos++, same_at_start_in_file++;
|
|
|
2963 else if (filec == '\r' && bufc == '\n')
|
|
|
2964 {
|
|
|
2965 /* If the `\r' is the last character in this buffer,
|
|
|
2966 it will be examined with the next bufferful. */
|
|
|
2967 if (bufpos == nread)
|
|
|
2968 {
|
|
|
2969 buffer[0] = filec;
|
|
|
2970 cr_left_in_buffer = 1;
|
|
|
2971 }
|
|
|
2972 else if (buffer[bufpos + 1] == bufc)
|
|
|
2973 {
|
|
|
2974 bufpos += 2;
|
|
|
2975 same_at_start_in_file += 2;
|
|
|
2976 same_at_start++;
|
|
|
2977 crlf_count++;
|
|
|
2978 lf_count++;
|
|
|
2979 }
|
|
|
2980 else
|
|
|
2981 break;
|
|
|
2982 }
|
|
|
2983 else
|
|
|
2984 break;
|
|
|
2985 }
|
|
|
2986 else
|
|
|
2987 #endif /* DOS_NT */
|
|
0
|
2988 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2989 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
211
|
2990 #ifdef DOS_NT
|
|
|
2991 same_at_start_in_file++,
|
|
|
2992 #endif
|
|
0
|
2993 same_at_start++, bufpos++;
|
|
|
2994 /* If we found a discrepancy, stop the scan.
|
|
211
|
2995 Otherwise loop around and scan the next bufferful. */
|
|
0
|
2996 if (bufpos != nread)
|
|
|
2997 break;
|
|
|
2998 }
|
|
|
2999 /* If the file matches the buffer completely,
|
|
|
3000 there's no need to replace anything. */
|
|
211
|
3001 #ifdef DOS_NT
|
|
|
3002 if (same_at_start_in_file == st.st_size)
|
|
|
3003 #else
|
|
0
|
3004 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
211
|
3005 #endif /* DOS_NT */
|
|
0
|
3006 {
|
|
|
3007 close (fd);
|
|
|
3008 unbind_to (speccount, Qnil);
|
|
|
3009 /* Truncate the buffer to the size of the file. */
|
|
|
3010 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3011 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3012 goto handled;
|
|
|
3013 }
|
|
|
3014 /* Count how many chars at the end of the file
|
|
|
3015 match the text at the end of the buffer. */
|
|
|
3016 while (1)
|
|
|
3017 {
|
|
|
3018 int total_read, nread;
|
|
|
3019 Bufpos bufpos, curpos, trial;
|
|
|
3020
|
|
|
3021 /* At what file position are we now scanning? */
|
|
211
|
3022 #ifdef DOS_NT
|
|
|
3023 curpos = same_at_end_in_file;
|
|
|
3024 #else
|
|
0
|
3025 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
211
|
3026 #endif /* DOS_NT */
|
|
0
|
3027 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
3028 if (curpos == 0)
|
|
|
3029 break;
|
|
|
3030 /* How much can we scan in the next step? */
|
|
|
3031 trial = min (curpos, sizeof buffer);
|
|
|
3032 if (lseek (fd, curpos - trial, 0) < 0)
|
|
227
|
3033 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
3034
|
|
|
3035 total_read = 0;
|
|
|
3036 while (total_read < trial)
|
|
|
3037 {
|
|
|
3038 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
3039 trial - total_read);
|
|
|
3040 if (nread <= 0)
|
|
227
|
3041 report_file_error ("IO error reading file", list1 (filename));
|
|
0
|
3042 total_read += nread;
|
|
|
3043 }
|
|
211
|
3044 /* Scan this bufferful from the end, comparing with
|
|
0
|
3045 the Emacs buffer. */
|
|
|
3046 bufpos = total_read;
|
|
211
|
3047 #ifdef DOS_NT
|
|
|
3048 /* DOS_NT text files require that we ignore a `\r' before a `\n'. */
|
|
|
3049 if (crlf_conversion_required)
|
|
|
3050 #endif /* DOS_NT */
|
|
0
|
3051 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
3052 as matching both at the file's beginning and at the end. */
|
|
211
|
3053 #if !defined(DOS_NT)
|
|
0
|
3054 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3055 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3056 buffer[bufpos - 1])
|
|
|
3057 same_at_end--, bufpos--;
|
|
211
|
3058 #else /* DOS_NT */
|
|
|
3059 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3060 && same_at_end_in_file > same_at_start_in_file)
|
|
|
3061 {
|
|
|
3062 int filec = buffer[bufpos - 1];
|
|
|
3063 int bufc = BUF_FETCH_CHAR (buf, same_at_end - 1);
|
|
|
3064
|
|
|
3065 /* Account for `\n' in previous bufferful. */
|
|
|
3066 if (last_was_lf && filec == '\r')
|
|
|
3067 {
|
|
|
3068 same_at_end_in_file--, bufpos--;
|
|
|
3069 last_was_lf = 0;
|
|
|
3070 crlf_count++;
|
|
|
3071 }
|
|
|
3072 else if (filec == bufc)
|
|
|
3073 {
|
|
|
3074 last_was_lf = 0;
|
|
|
3075 same_at_end--, same_at_end_in_file--, bufpos--;
|
|
|
3076 if (bufc == '\n')
|
|
|
3077 {
|
|
|
3078 lf_count++;
|
|
|
3079 if (bufpos <= 0)
|
|
|
3080 last_was_lf = 1;
|
|
|
3081 else if (same_at_end_in_file <= same_at_start_in_file)
|
|
|
3082 break;
|
|
|
3083 else if (buffer[bufpos - 1] == '\r')
|
|
|
3084 same_at_end_in_file--, bufpos--, crlf_count++;
|
|
|
3085 }
|
|
|
3086 }
|
|
|
3087 else
|
|
|
3088 {
|
|
|
3089 last_was_lf = 0;
|
|
|
3090 break;
|
|
|
3091 }
|
|
|
3092 }
|
|
|
3093 else
|
|
|
3094 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
3095 && same_at_end_in_file > same_at_start_in_file
|
|
|
3096 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
3097 buffer[bufpos - 1])
|
|
|
3098 same_at_end--, same_at_end_in_file--, bufpos--;
|
|
|
3099 #endif /* !defined(DOS_NT) */
|
|
0
|
3100 /* If we found a discrepancy, stop the scan.
|
|
211
|
3101 Otherwise loop around and scan the preceding bufferful. */
|
|
0
|
3102 if (bufpos != 0)
|
|
|
3103 break;
|
|
|
3104 /* If display current starts at beginning of line,
|
|
|
3105 keep it that way. */
|
|
|
3106 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
3107 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
3108 !NILP (Fbolp (make_buffer (buf)));
|
|
|
3109 }
|
|
|
3110
|
|
|
3111 /* Don't try to reuse the same piece of text twice. */
|
|
|
3112 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
3113 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
3114 if (overlap > 0)
|
|
|
3115 same_at_end += overlap;
|
|
|
3116
|
|
|
3117 /* Arrange to read only the nonmatching middle part of the file. */
|
|
211
|
3118 #ifdef DOS_NT
|
|
|
3119 beg = make_int (same_at_start_in_file);
|
|
|
3120 end = make_int (same_at_end_in_file);
|
|
|
3121 #else
|
|
0
|
3122 beg = make_int (same_at_start - BUF_BEGV (buf));
|
|
|
3123 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
211
|
3124 #endif /* DOS_NT */
|
|
0
|
3125
|
|
|
3126 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
3127 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
3128 /* Insert from the file at the proper position. */
|
|
|
3129 BUF_SET_PT (buf, same_at_start);
|
|
|
3130 }
|
|
|
3131 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
3132
|
|
173
|
3133 if (!not_regular)
|
|
|
3134 {
|
|
|
3135 total = XINT (end) - XINT (beg);
|
|
|
3136
|
|
|
3137 /* Make sure point-max won't overflow after this insertion. */
|
|
227
|
3138 if (total != XINT (make_int (total)))
|
|
173
|
3139 error ("Maximum buffer size exceeded");
|
|
|
3140 }
|
|
|
3141 else
|
|
|
3142 /* For a special file, all we can do is guess. */
|
|
|
3143 total = READ_BUF_SIZE;
|
|
0
|
3144
|
|
|
3145 if (XINT (beg) != 0
|
|
|
3146 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
3147 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
3148 connivings above will normally put the file pointer other than
|
|
|
3149 where it should be. */
|
|
|
3150 || !NILP (replace)
|
|
|
3151 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
3152 )
|
|
|
3153 {
|
|
|
3154 if (lseek (fd, XINT (beg), 0) < 0)
|
|
227
|
3155 report_file_error ("Setting file position", list1 (filename));
|
|
0
|
3156 }
|
|
|
3157
|
|
|
3158 {
|
|
|
3159 Bufpos cur_point = BUF_PT (buf);
|
|
|
3160 struct gcpro ngcpro1;
|
|
|
3161 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
3162 LSTR_ALLOW_QUIT);
|
|
|
3163
|
|
|
3164 NGCPRO1 (stream);
|
|
|
3165 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3166 #ifdef MULE
|
|
|
3167 stream = make_decoding_input_stream
|
|
|
3168 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
3169 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
3170 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3171 #endif /* MULE */
|
|
0
|
3172
|
|
|
3173 record_unwind_protect (close_stream_unwind, stream);
|
|
|
3174
|
|
16
|
3175 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
3176 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
3177 occurs inside of the filedesc stream. */
|
|
0
|
3178 while (1)
|
|
|
3179 {
|
|
|
3180 Bytecount this_len;
|
|
|
3181 Charcount cc_inserted;
|
|
|
3182
|
|
|
3183 QUIT;
|
|
|
3184 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
3185 sizeof (read_buf));
|
|
151
|
3186
|
|
0
|
3187 if (this_len <= 0)
|
|
|
3188 {
|
|
|
3189 if (this_len < 0)
|
|
|
3190 saverrno = errno;
|
|
|
3191 break;
|
|
|
3192 }
|
|
211
|
3193 #ifdef DOS_NT
|
|
|
3194 /* XEmacs (--marcpa) change: FSF does buffer_insert_raw_string_1() first
|
|
|
3195 then checks if conversion is needed, calling lisp
|
|
|
3196 (find-buffer-file-type) which can call a user-function that
|
|
|
3197 might look at the unconverted buffer to decide if
|
|
|
3198 conversion is needed.
|
|
|
3199 I removed the possibility for lisp functions called from
|
|
|
3200 find-buffer-file-type to look at the buffer's content, for
|
|
|
3201 simplicity reasons: it is easier to do the CRLF -> LF
|
|
|
3202 conversion on read_buf than on buffer contents because
|
|
|
3203 BUF_FETCH_CHAR does not return a pointer to an unsigned
|
|
|
3204 char memory location, and because we must cope with bytind
|
|
|
3205 VS bufpos in XEmacs, thus complicating crlf_to_lf().
|
|
|
3206 This decision (of doing Lstream_read(), crlf_to_lf() then
|
|
|
3207 buffer_insert_raw_string_1()) is debatable.
|
|
|
3208 --marcpa
|
|
|
3209 */
|
|
|
3210 /* Following FSF note no longer apply now. See comment above.
|
|
|
3211 --marcpa*/
|
|
|
3212 /* For compatability with earlier versions that did not support the
|
|
|
3213 REPLACE funtionality, we call find-buffer-file-type after inserting
|
|
|
3214 the contents to allow it to inspect the inserted data. (This was
|
|
|
3215 not intentional usage, but proved to be quite useful.) */
|
|
|
3216 if (NILP (replace))
|
|
|
3217 {
|
|
|
3218 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
3219 /* Determine file type (text/binary) from its name.
|
|
|
3220 Note that the buffer_file_type changes here when the file
|
|
|
3221 being inserted is not of the same type as the original buffer. */
|
|
|
3222 current_buffer->buffer_file_type = call1 (Qfind_buffer_file_type, filename);
|
|
|
3223 if (NILP (current_buffer->buffer_file_type))
|
|
|
3224 crlf_conversion_required = 1;
|
|
|
3225 else if (current_buffer->buffer_file_type != Qt)
|
|
|
3226 /* Use heuristic to decide whether file is text or binary (based
|
|
|
3227 on the first bufferful) if buffer-file-type is not nil or t.
|
|
|
3228 If no decision is made (because no line endings were ever
|
|
|
3229 seen) then let buffer-file-type default to nil. */
|
|
|
3230 crlf_conversion_required = -1;
|
|
|
3231 }
|
|
|
3232
|
|
|
3233 /* If requested, we check the inserted data to decide whether the file
|
|
|
3234 is binary or text. (If text, we count LF and CRLF occurences to
|
|
|
3235 determine whether the file was in Unix or DOS format.) */
|
|
|
3236 if (crlf_conversion_required < 0)
|
|
|
3237 {
|
|
|
3238 crlf_conversion_required =
|
|
|
3239 decide_buffer_type (read_buf, this_len);
|
|
|
3240 current_buffer->buffer_file_type =
|
|
|
3241 crlf_conversion_required ? Qnil : Qt;
|
|
|
3242 }
|
|
|
3243
|
|
|
3244 /* Demacs 1.1.1 91/10/16 HIRANO Satoshi, MW July 1993 */
|
|
|
3245 /* Remove CRs from CR-LFs if the file is deemed to be a text file. */
|
|
|
3246 if (crlf_conversion_required)
|
|
|
3247 {
|
|
|
3248 int reduced_size
|
|
|
3249 = this_len - crlf_to_lf (this_len, read_buf,
|
|
|
3250 &lf_count);
|
|
|
3251 crlf_count += reduced_size;
|
|
|
3252 /* XEmacs (--marcpa) change: No need for this since we havent
|
|
|
3253 inserted in buffer yet. */
|
|
|
3254 #if 0
|
|
|
3255 ZV -= reduced_size;
|
|
|
3256 Z -= reduced_size;
|
|
|
3257 GPT -= reduced_size;
|
|
|
3258 GAP_SIZE += reduced_size;
|
|
|
3259 inserted -= reduced_size;
|
|
|
3260 #endif
|
|
|
3261 this_len -= reduced_size;
|
|
|
3262
|
|
|
3263 /* Change buffer_file_type back to binary if Unix eol format. */
|
|
|
3264 if (crlf_count == 0 && lf_count > 0)
|
|
|
3265 current_buffer->buffer_file_type = Qt;
|
|
|
3266 }
|
|
|
3267
|
|
|
3268 /* Make crlf_count and lf_count available for inspection. */
|
|
|
3269 Fset (intern ("buffer-file-lines"), make_int (lf_count));
|
|
|
3270 Fset (intern ("buffer-file-dos-lines"), make_int (crlf_count));
|
|
|
3271 #endif /* DOS_NT */
|
|
0
|
3272
|
|
|
3273 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
3274 this_len,
|
|
|
3275 !NILP (visit)
|
|
|
3276 ? INSDEL_NO_LOCKING : 0);
|
|
|
3277 inserted += cc_inserted;
|
|
|
3278 cur_point += cc_inserted;
|
|
|
3279 }
|
|
70
|
3280 #ifdef MULE
|
|
|
3281 if (!NILP (used_codesys))
|
|
|
3282 {
|
|
|
3283 Fset (used_codesys,
|
|
|
3284 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
3285 }
|
|
183
|
3286 #endif /* MULE */
|
|
0
|
3287 NUNGCPRO;
|
|
|
3288 }
|
|
|
3289
|
|
|
3290 /* Close the file/stream */
|
|
|
3291 unbind_to (speccount, Qnil);
|
|
|
3292
|
|
|
3293 if (saverrno != 0)
|
|
|
3294 {
|
|
|
3295 error ("IO error reading %s: %s",
|
|
16
|
3296 XSTRING_DATA (filename), strerror (saverrno));
|
|
0
|
3297 }
|
|
|
3298
|
|
|
3299 notfound:
|
|
|
3300 handled:
|
|
|
3301
|
|
|
3302 end_multiple_change (buf, mc_count);
|
|
|
3303
|
|
|
3304 if (!NILP (visit))
|
|
|
3305 {
|
|
|
3306 if (!EQ (buf->undo_list, Qt))
|
|
|
3307 buf->undo_list = Qnil;
|
|
|
3308 #ifdef APOLLO
|
|
16
|
3309 stat ((char *) XSTRING_DATA (filename), &st);
|
|
0
|
3310 #endif
|
|
|
3311 if (NILP (handler))
|
|
|
3312 {
|
|
|
3313 buf->modtime = st.st_mtime;
|
|
|
3314 buf->filename = filename;
|
|
|
3315 /* XEmacs addition: */
|
|
|
3316 /* This function used to be in C, ostensibly so that
|
|
|
3317 it could be called here. But that's just silly.
|
|
|
3318 There's no reason C code can't call out to Lisp
|
|
|
3319 code, and it's a lot cleaner this way. */
|
|
|
3320 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3321 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3322 }
|
|
|
3323 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3324 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3325 buf->save_length = make_int (BUF_SIZE (buf));
|
|
|
3326 #ifdef CLASH_DETECTION
|
|
|
3327 if (NILP (handler))
|
|
|
3328 {
|
|
|
3329 if (!NILP (buf->file_truename))
|
|
|
3330 unlock_file (buf->file_truename);
|
|
|
3331 unlock_file (filename);
|
|
|
3332 }
|
|
|
3333 #endif /* CLASH_DETECTION */
|
|
|
3334 if (not_regular)
|
|
|
3335 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3336 list2 (build_string ("not a regular file"),
|
|
|
3337 filename)));
|
|
|
3338
|
|
|
3339 /* If visiting nonexistent file, return nil. */
|
|
|
3340 if (buf->modtime == -1)
|
|
|
3341 report_file_error ("Opening input file",
|
|
|
3342 list1 (filename));
|
|
|
3343 }
|
|
|
3344
|
|
|
3345 /* Decode file format */
|
|
|
3346 if (inserted > 0)
|
|
|
3347 {
|
|
151
|
3348 Lisp_Object insval = call3 (Qformat_decode,
|
|
0
|
3349 Qnil, make_int (inserted), visit);
|
|
|
3350 CHECK_INT (insval);
|
|
|
3351 inserted = XINT (insval);
|
|
|
3352 }
|
|
|
3353
|
|
|
3354 if (inserted > 0)
|
|
|
3355 {
|
|
227
|
3356 Lisp_Object p;
|
|
0
|
3357 struct gcpro ngcpro1;
|
|
|
3358
|
|
|
3359 NGCPRO1 (p);
|
|
227
|
3360 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
0
|
3361 {
|
|
|
3362 Lisp_Object insval =
|
|
227
|
3363 call1 (XCAR (p), make_int (inserted));
|
|
0
|
3364 if (!NILP (insval))
|
|
|
3365 {
|
|
|
3366 CHECK_NATNUM (insval);
|
|
|
3367 inserted = XINT (insval);
|
|
|
3368 }
|
|
|
3369 QUIT;
|
|
|
3370 }
|
|
|
3371 NUNGCPRO;
|
|
|
3372 }
|
|
|
3373
|
|
|
3374 UNGCPRO;
|
|
|
3375
|
|
|
3376 if (!NILP (val))
|
|
|
3377 return (val);
|
|
|
3378 else
|
|
|
3379 return (list2 (filename, make_int (inserted)));
|
|
|
3380 }
|
|
|
3381
|
|
|
3382
|
|
|
3383 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3384 Lisp_Object *annot);
|
|
|
3385 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3386
|
|
|
3387 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3388 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3389
|
|
151
|
3390 static Lisp_Object
|
|
0
|
3391 build_annotations_unwind (Lisp_Object buf)
|
|
|
3392 {
|
|
|
3393 Lisp_Object tembuf;
|
|
|
3394
|
|
|
3395 if (XBUFFER (buf) == current_buffer)
|
|
|
3396 return Qnil;
|
|
|
3397 tembuf = Fcurrent_buffer ();
|
|
|
3398 Fset_buffer (buf);
|
|
|
3399 Fkill_buffer (tembuf);
|
|
|
3400 return Qnil;
|
|
|
3401 }
|
|
|
3402
|
|
70
|
3403 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
20
|
3404 "r\nFWrite region to file: ", /*
|
|
70
|
3405 Write current region into specified file; no coding-system frobbing.
|
|
|
3406 This function is identical to `write-region' except for the handling
|
|
|
3407 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3408 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3409 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3410 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
20
|
3411 */
|
|
70
|
3412 (start, end, filename, append, visit, lockname, codesys))
|
|
0
|
3413 {
|
|
116
|
3414 /* This function can call lisp */
|
|
0
|
3415 int desc;
|
|
|
3416 int failure;
|
|
|
3417 int save_errno = 0;
|
|
|
3418 struct stat st;
|
|
|
3419 Lisp_Object fn;
|
|
|
3420 int speccount = specpdl_depth ();
|
|
|
3421 int visiting_other = STRINGP (visit);
|
|
|
3422 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3423 int quietly = (!visiting && !NILP (visit));
|
|
|
3424 Lisp_Object visit_file = Qnil;
|
|
|
3425 Lisp_Object annotations = Qnil;
|
|
|
3426 struct buffer *given_buffer;
|
|
|
3427 Bufpos start1, end1;
|
|
|
3428
|
|
114
|
3429 /* #### dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
|
3430 we should signal an error rather than blissfully continuing
|
|
|
3431 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3432 to protect the current_buffer from being destroyed, but the
|
|
|
3433 multiple return points make this a pain in the butt. */
|
|
|
3434
|
|
0
|
3435 #ifdef DOS_NT
|
|
|
3436 int buffer_file_type
|
|
|
3437 = NILP (current_buffer->buffer_file_type) ? O_TEXT : O_BINARY;
|
|
|
3438 #endif /* DOS_NT */
|
|
|
3439
|
|
70
|
3440 #ifdef MULE
|
|
|
3441 codesys = Fget_coding_system (codesys);
|
|
|
3442 #endif /* MULE */
|
|
|
3443
|
|
0
|
3444 if (current_buffer->base_buffer && ! NILP (visit))
|
|
|
3445 error ("Cannot do file visiting in an indirect buffer");
|
|
|
3446
|
|
|
3447 if (!NILP (start) && !STRINGP (start))
|
|
|
3448 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3449
|
|
|
3450 {
|
|
|
3451 Lisp_Object handler;
|
|
|
3452 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
114
|
3453
|
|
0
|
3454 GCPRO5 (start, filename, visit, visit_file, lockname);
|
|
|
3455
|
|
|
3456 if (visiting_other)
|
|
|
3457 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3458 else
|
|
|
3459 visit_file = filename;
|
|
|
3460 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3461
|
|
|
3462 UNGCPRO;
|
|
|
3463
|
|
|
3464 if (NILP (lockname))
|
|
|
3465 lockname = visit_file;
|
|
|
3466
|
|
|
3467 /* If the file name has special constructs in it,
|
|
|
3468 call the corresponding file handler. */
|
|
|
3469 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3470 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3471 if (NILP (handler) && STRINGP (visit))
|
|
|
3472 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3473
|
|
|
3474 if (!NILP (handler))
|
|
|
3475 {
|
|
151
|
3476 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
86
|
3477 filename, append, visit, lockname, codesys);
|
|
0
|
3478 if (visiting)
|
|
|
3479 {
|
|
|
3480 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3481 current_buffer->save_length =
|
|
|
3482 make_int (BUF_SIZE (current_buffer));
|
|
|
3483 current_buffer->filename = visit_file;
|
|
|
3484 MARK_MODELINE_CHANGED;
|
|
|
3485 }
|
|
|
3486 return val;
|
|
|
3487 }
|
|
|
3488 }
|
|
|
3489
|
|
|
3490 #ifdef CLASH_DETECTION
|
|
|
3491 if (!auto_saving)
|
|
|
3492 {
|
|
114
|
3493 Lisp_Object curbuf;
|
|
|
3494 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3495
|
|
|
3496 XSETBUFFER (curbuf, current_buffer);
|
|
|
3497 GCPRO5 (start, filename, visit_file, lockname, curbuf);
|
|
0
|
3498 lock_file (lockname);
|
|
|
3499 UNGCPRO;
|
|
|
3500 }
|
|
|
3501 #endif /* CLASH_DETECTION */
|
|
|
3502
|
|
|
3503 /* Special kludge to simplify auto-saving. */
|
|
|
3504 if (NILP (start))
|
|
|
3505 {
|
|
|
3506 start1 = BUF_BEG (current_buffer);
|
|
|
3507 end1 = BUF_Z (current_buffer);
|
|
|
3508 }
|
|
|
3509
|
|
|
3510 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3511
|
|
|
3512 given_buffer = current_buffer;
|
|
|
3513 annotations = build_annotations (start, end);
|
|
|
3514 if (current_buffer != given_buffer)
|
|
|
3515 {
|
|
|
3516 start1 = BUF_BEGV (current_buffer);
|
|
|
3517 end1 = BUF_ZV (current_buffer);
|
|
|
3518 }
|
|
|
3519
|
|
|
3520 fn = filename;
|
|
|
3521 desc = -1;
|
|
|
3522 if (!NILP (append))
|
|
|
3523 #ifdef DOS_NT
|
|
16
|
3524 desc = open ((char *) XSTRING_DATA (fn),
|
|
211
|
3525 (O_WRONLY | buffer_file_type), 0);
|
|
0
|
3526 #else /* not DOS_NT */
|
|
16
|
3527 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY, 0);
|
|
0
|
3528 #endif /* not DOS_NT */
|
|
|
3529
|
|
|
3530 if (desc < 0)
|
|
|
3531 {
|
|
|
3532 #ifdef DOS_NT
|
|
151
|
3533 desc = open ((char *) XSTRING_DATA (fn),
|
|
211
|
3534 (O_WRONLY | O_TRUNC | O_CREAT | buffer_file_type),
|
|
0
|
3535 (S_IREAD | S_IWRITE));
|
|
|
3536 #else /* not DOS_NT */
|
|
16
|
3537 desc = creat ((char *) XSTRING_DATA (fn),
|
|
0
|
3538 ((auto_saving) ? auto_save_mode_bits : 0666));
|
|
|
3539 #endif /* DOS_NT */
|
|
|
3540 }
|
|
|
3541
|
|
|
3542 if (desc < 0)
|
|
|
3543 {
|
|
|
3544 #ifdef CLASH_DETECTION
|
|
|
3545 save_errno = errno;
|
|
|
3546 if (!auto_saving) unlock_file (lockname);
|
|
|
3547 errno = save_errno;
|
|
|
3548 #endif /* CLASH_DETECTION */
|
|
227
|
3549 report_file_error ("Opening output file", list1 (filename));
|
|
0
|
3550 }
|
|
|
3551
|
|
|
3552 {
|
|
|
3553 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3554 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
|
3555 struct gcpro gcpro1, gcpro2;
|
|
|
3556 /* need to gcpro; QUIT could happen out of call to write() */
|
|
|
3557 GCPRO2 (instream, outstream);
|
|
|
3558
|
|
|
3559 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3560
|
|
|
3561 if (!NILP (append))
|
|
|
3562 {
|
|
|
3563 if (lseek (desc, 0, 2) < 0)
|
|
|
3564 {
|
|
|
3565 #ifdef CLASH_DETECTION
|
|
|
3566 if (!auto_saving) unlock_file (lockname);
|
|
|
3567 #endif /* CLASH_DETECTION */
|
|
|
3568 report_file_error ("Lseek error",
|
|
|
3569 list1 (filename));
|
|
|
3570 }
|
|
|
3571 }
|
|
|
3572
|
|
|
3573 failure = 0;
|
|
|
3574
|
|
|
3575 /* Note: I tried increasing the buffering size, along with
|
|
|
3576 various other tricks, but nothing seemed to make much of
|
|
|
3577 a difference in the time it took to save a large file.
|
|
|
3578 (Actually that's not true. With a local disk, changing
|
|
|
3579 the buffer size doesn't seem to make much difference.
|
|
|
3580 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3581 because you're affecting the number of network requests
|
|
|
3582 that need to be made, and there could be a large latency
|
|
|
3583 for each request. So I've increased the buffer size
|
|
|
3584 to 64K.) */
|
|
|
3585 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3586 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3587 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
70
|
3588 #ifdef MULE
|
|
|
3589 outstream =
|
|
185
|
3590 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
70
|
3591 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3592 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
183
|
3593 #endif /* MULE */
|
|
0
|
3594 if (STRINGP (start))
|
|
|
3595 {
|
|
|
3596 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3597 start1 = 0;
|
|
|
3598 }
|
|
|
3599 else
|
|
|
3600 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3601 LSTR_SELECTIVE |
|
|
|
3602 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3603 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3604 &annotations)));
|
|
|
3605 save_errno = errno;
|
|
|
3606 /* Note that this doesn't close the desc since we created the
|
|
|
3607 stream without the LSTR_CLOSING flag, but it does
|
|
|
3608 flush out any buffered data. */
|
|
|
3609 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3610 {
|
|
|
3611 failure = 1;
|
|
|
3612 save_errno = errno;
|
|
|
3613 }
|
|
|
3614 Lstream_close (XLSTREAM (instream));
|
|
|
3615 UNGCPRO;
|
|
|
3616
|
|
|
3617 #ifdef HAVE_FSYNC
|
|
|
3618 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3619 Disk full in NFS may be reported here. */
|
|
|
3620 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3621 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3622 if (!auto_saving && fsync (desc) < 0
|
|
|
3623 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3624 && errno != EINTR)
|
|
|
3625 {
|
|
|
3626 failure = 1;
|
|
|
3627 save_errno = errno;
|
|
|
3628 }
|
|
183
|
3629 #endif /* HAVE_FSYNC */
|
|
0
|
3630
|
|
151
|
3631 /* Spurious "file has changed on disk" warnings have been
|
|
0
|
3632 observed on Suns as well.
|
|
|
3633 It seems that `close' can change the modtime, under nfs.
|
|
|
3634
|
|
|
3635 (This has supposedly been fixed in Sunos 4,
|
|
|
3636 but who knows about all the other machines with NFS?) */
|
|
|
3637 /* On VMS and APOLLO, must do the stat after the close
|
|
|
3638 since closing changes the modtime. */
|
|
|
3639 #if 0 /* !defined (VMS) && !defined (APOLLO) */
|
|
|
3640 fstat (desc, &st);
|
|
|
3641 #endif
|
|
|
3642
|
|
|
3643 /* NFS can report a write failure now. */
|
|
|
3644 if (close (desc) < 0)
|
|
|
3645 {
|
|
|
3646 failure = 1;
|
|
|
3647 save_errno = errno;
|
|
|
3648 }
|
|
|
3649
|
|
|
3650 /* Discard the close unwind-protect. Execute the one for
|
|
|
3651 build_annotations (switches back to the original current buffer
|
|
|
3652 as necessary). */
|
|
|
3653 XCAR (desc_locative) = Qnil;
|
|
|
3654 unbind_to (speccount, Qnil);
|
|
|
3655 }
|
|
151
|
3656
|
|
0
|
3657
|
|
|
3658 #if 1 /* defined (VMS) || defined (APOLLO) */
|
|
16
|
3659 stat ((char *) XSTRING_DATA (fn), &st);
|
|
0
|
3660 #endif
|
|
|
3661
|
|
|
3662 #ifdef CLASH_DETECTION
|
|
|
3663 if (!auto_saving)
|
|
|
3664 unlock_file (lockname);
|
|
|
3665 #endif /* CLASH_DETECTION */
|
|
|
3666
|
|
|
3667 /* Do this before reporting IO error
|
|
|
3668 to avoid a "file has changed on disk" warning on
|
|
|
3669 next attempt to save. */
|
|
|
3670 if (visiting)
|
|
|
3671 current_buffer->modtime = st.st_mtime;
|
|
|
3672
|
|
|
3673 if (failure)
|
|
151
|
3674 error ("IO error writing %s: %s",
|
|
|
3675 XSTRING_DATA (fn),
|
|
0
|
3676 strerror (save_errno));
|
|
|
3677
|
|
|
3678 if (visiting)
|
|
|
3679 {
|
|
|
3680 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3681 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
3682 current_buffer->filename = visit_file;
|
|
|
3683 MARK_MODELINE_CHANGED;
|
|
|
3684 }
|
|
|
3685 else if (quietly)
|
|
|
3686 {
|
|
|
3687 return Qnil;
|
|
|
3688 }
|
|
|
3689
|
|
|
3690 if (!auto_saving)
|
|
|
3691 {
|
|
|
3692 if (visiting_other)
|
|
16
|
3693 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
0
|
3694 else
|
|
|
3695 {
|
|
|
3696 struct gcpro gcpro1;
|
|
|
3697 Lisp_Object fsp;
|
|
|
3698 GCPRO1 (fn);
|
|
|
3699
|
|
|
3700 fsp = Ffile_symlink_p (fn);
|
|
|
3701 if (NILP (fsp))
|
|
16
|
3702 message ("Wrote %s", XSTRING_DATA (fn));
|
|
0
|
3703 else
|
|
151
|
3704 message ("Wrote %s (symlink to %s)",
|
|
16
|
3705 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
0
|
3706 UNGCPRO;
|
|
|
3707 }
|
|
|
3708 }
|
|
|
3709 return Qnil;
|
|
|
3710 }
|
|
|
3711
|
|
|
3712 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3713 something so stupid as a subr, just sort the fucking list more
|
|
|
3714 intelligently. */
|
|
20
|
3715 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
0
|
3716 Return t if (car A) is numerically less than (car B).
|
|
20
|
3717 */
|
|
|
3718 (a, b))
|
|
0
|
3719 {
|
|
|
3720 return Flss (Fcar (a), Fcar (b));
|
|
|
3721 }
|
|
|
3722
|
|
|
3723 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3724 wrote the above comment. */
|
|
20
|
3725 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
0
|
3726 Return t if (cdr A) is numerically less than (cdr B).
|
|
20
|
3727 */
|
|
|
3728 (a, b))
|
|
0
|
3729 {
|
|
|
3730 return Flss (Fcdr (a), Fcdr (b));
|
|
|
3731 }
|
|
|
3732
|
|
|
3733 /* Build the complete list of annotations appropriate for writing out
|
|
|
3734 the text between START and END, by calling all the functions in
|
|
|
3735 write-region-annotate-functions and merging the lists they return.
|
|
|
3736 If one of these functions switches to a different buffer, we assume
|
|
|
3737 that buffer contains altered text. Therefore, the caller must
|
|
|
3738 make sure to restore the current buffer in all cases,
|
|
|
3739 as save-excursion would do. */
|
|
|
3740
|
|
|
3741 static Lisp_Object
|
|
|
3742 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3743 {
|
|
|
3744 /* This function can GC */
|
|
|
3745 Lisp_Object annotations;
|
|
|
3746 Lisp_Object p, res;
|
|
|
3747 struct gcpro gcpro1, gcpro2;
|
|
215
|
3748 Lisp_Object original_buffer;
|
|
|
3749
|
|
|
3750 XSETBUFFER (original_buffer, current_buffer);
|
|
0
|
3751
|
|
|
3752 annotations = Qnil;
|
|
|
3753 p = Vwrite_region_annotate_functions;
|
|
|
3754 GCPRO2 (annotations, p);
|
|
|
3755 while (!NILP (p))
|
|
|
3756 {
|
|
|
3757 struct buffer *given_buffer = current_buffer;
|
|
|
3758 Vwrite_region_annotations_so_far = annotations;
|
|
|
3759 res = call2 (Fcar (p), start, end);
|
|
|
3760 /* If the function makes a different buffer current,
|
|
|
3761 assume that means this buffer contains altered text to be output.
|
|
|
3762 Reset START and END from the buffer bounds
|
|
|
3763 and discard all previous annotations because they should have
|
|
|
3764 been dealt with by this function. */
|
|
|
3765 if (current_buffer != given_buffer)
|
|
|
3766 {
|
|
|
3767 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3768 end = make_int (BUF_ZV (current_buffer));
|
|
|
3769 annotations = Qnil;
|
|
|
3770 }
|
|
183
|
3771 Flength (res); /* Check basic validity of return value */
|
|
0
|
3772 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3773 p = Fcdr (p);
|
|
|
3774 }
|
|
|
3775
|
|
|
3776 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3777 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3778 p = Vauto_save_file_format;
|
|
|
3779 else
|
|
|
3780 p = current_buffer->file_format;
|
|
|
3781 while (!NILP (p))
|
|
|
3782 {
|
|
|
3783 struct buffer *given_buffer = current_buffer;
|
|
|
3784 Vwrite_region_annotations_so_far = annotations;
|
|
215
|
3785 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3786 original_buffer);
|
|
0
|
3787 if (current_buffer != given_buffer)
|
|
|
3788 {
|
|
|
3789 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3790 end = make_int (BUF_ZV (current_buffer));
|
|
|
3791 annotations = Qnil;
|
|
|
3792 }
|
|
183
|
3793 Flength (res);
|
|
0
|
3794 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3795 p = Fcdr (p);
|
|
|
3796 }
|
|
|
3797 UNGCPRO;
|
|
|
3798 return annotations;
|
|
|
3799 }
|
|
|
3800
|
|
|
3801 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3802 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3803 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3804 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3805 each at its appropriate position.
|
|
|
3806
|
|
|
3807 Modify *ANNOT by discarding elements as we output them.
|
|
|
3808 The return value is negative in case of system call failure. */
|
|
|
3809
|
|
|
3810 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3811 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3812 batch to 64K to reduce the number of system calls. */
|
|
|
3813
|
|
|
3814 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3815
|
|
|
3816 static int
|
|
|
3817 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3818 Lisp_Object *annot)
|
|
|
3819 {
|
|
|
3820 Lisp_Object tem;
|
|
|
3821 int nextpos;
|
|
|
3822 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3823 Lstream *instr = XLSTREAM (instream);
|
|
|
3824 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3825
|
|
|
3826 while (NILP (*annot) || CONSP (*annot))
|
|
|
3827 {
|
|
|
3828 tem = Fcar_safe (Fcar (*annot));
|
|
|
3829 if (INTP (tem))
|
|
|
3830 nextpos = XINT (tem);
|
|
|
3831 else
|
|
|
3832 nextpos = INT_MAX;
|
|
70
|
3833 #ifdef MULE
|
|
|
3834 /* If there are annotations left and we have Mule, then we
|
|
|
3835 have to do the I/O one emchar at a time so we can
|
|
|
3836 determine when to insert the annotation. */
|
|
|
3837 if (!NILP (*annot))
|
|
|
3838 {
|
|
|
3839 Emchar ch;
|
|
|
3840 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3841 {
|
|
|
3842 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3843 return -1;
|
|
|
3844 pos++;
|
|
|
3845 }
|
|
|
3846 }
|
|
|
3847 else
|
|
183
|
3848 #endif /* MULE */
|
|
0
|
3849 {
|
|
|
3850 while (pos != nextpos)
|
|
|
3851 {
|
|
|
3852 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3853 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
151
|
3854
|
|
0
|
3855 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3856 if (chunk < 0)
|
|
|
3857 return -1;
|
|
|
3858 if (chunk == 0) /* EOF */
|
|
|
3859 break;
|
|
|
3860 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3861 return -1;
|
|
|
3862 pos += chunk;
|
|
|
3863 }
|
|
|
3864 }
|
|
|
3865 if (pos == nextpos)
|
|
|
3866 {
|
|
|
3867 tem = Fcdr (Fcar (*annot));
|
|
|
3868 if (STRINGP (tem))
|
|
|
3869 {
|
|
16
|
3870 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3871 XSTRING_LENGTH (tem)) < 0)
|
|
0
|
3872 return -1;
|
|
|
3873 }
|
|
|
3874 *annot = Fcdr (*annot);
|
|
|
3875 }
|
|
|
3876 else
|
|
|
3877 return 0;
|
|
|
3878 }
|
|
|
3879 return -1;
|
|
|
3880 }
|
|
|
3881
|
|
|
3882
|
|
|
3883
|
|
|
3884 #if 0
|
|
|
3885 #include <des_crypt.h>
|
|
|
3886
|
|
|
3887 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3888 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3889
|
|
20
|
3890 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
0
|
3891 Encrypt STRING using KEY.
|
|
20
|
3892 */
|
|
|
3893 (string, key))
|
|
0
|
3894 {
|
|
|
3895 char *encrypted_string, *raw_key;
|
|
|
3896 int rounded_size, extra, key_size;
|
|
|
3897
|
|
|
3898 /* !!#### May produce bogus data under Mule. */
|
|
|
3899 CHECK_STRING (string);
|
|
|
3900 CHECK_STRING (key);
|
|
|
3901
|
|
16
|
3902 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3903 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
0
|
3904 encrypted_string = alloca (rounded_size + 1);
|
|
16
|
3905 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
0
|
3906 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3907
|
|
183
|
3908 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3909
|
|
|
3910 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3911 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3912 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3913
|
|
183
|
3914 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3915 DES_ENCRYPT | DES_SW);
|
|
0
|
3916 return make_string (encrypted_string, rounded_size);
|
|
|
3917 }
|
|
|
3918
|
|
20
|
3919 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
0
|
3920 Decrypt STRING using KEY.
|
|
20
|
3921 */
|
|
|
3922 (string, key))
|
|
0
|
3923 {
|
|
|
3924 char *decrypted_string, *raw_key;
|
|
|
3925 int string_size, key_size;
|
|
|
3926
|
|
|
3927 CHECK_STRING (string);
|
|
|
3928 CHECK_STRING (key);
|
|
|
3929
|
|
16
|
3930 string_size = XSTRING_LENGTH (string) + 1;
|
|
0
|
3931 decrypted_string = alloca (string_size);
|
|
16
|
3932 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
0
|
3933 decrypted_string[string_size - 1] = '\0';
|
|
|
3934
|
|
183
|
3935 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
0
|
3936
|
|
|
3937 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
16
|
3938 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
0
|
3939 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3940
|
|
|
3941
|
|
183
|
3942 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
0
|
3943 return make_string (decrypted_string, string_size - 1);
|
|
|
3944 }
|
|
183
|
3945 #endif /* 0 */
|
|
0
|
3946
|
|
|
3947
|
|
20
|
3948 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
0
|
3949 Return t if last mod time of BUF's visited file matches what BUF records.
|
|
|
3950 This means that the file has not been changed since it was visited or saved.
|
|
20
|
3951 */
|
|
|
3952 (buf))
|
|
0
|
3953 {
|
|
116
|
3954 /* This function can call lisp */
|
|
0
|
3955 struct buffer *b;
|
|
|
3956 struct stat st;
|
|
|
3957 Lisp_Object handler;
|
|
|
3958
|
|
|
3959 CHECK_BUFFER (buf);
|
|
|
3960 b = XBUFFER (buf);
|
|
|
3961
|
|
|
3962 if (!STRINGP (b->filename)) return Qt;
|
|
|
3963 if (b->modtime == 0) return Qt;
|
|
|
3964
|
|
|
3965 /* If the file name has special constructs in it,
|
|
|
3966 call the corresponding file handler. */
|
|
|
3967 handler = Ffind_file_name_handler (b->filename,
|
|
|
3968 Qverify_visited_file_modtime);
|
|
|
3969 if (!NILP (handler))
|
|
|
3970 return call2 (handler, Qverify_visited_file_modtime, buf);
|
|
|
3971
|
|
16
|
3972 if (stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
0
|
3973 {
|
|
|
3974 /* If the file doesn't exist now and didn't exist before,
|
|
|
3975 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3976 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3977 st.st_mtime = -1;
|
|
|
3978 else
|
|
|
3979 st.st_mtime = 0;
|
|
|
3980 }
|
|
|
3981 if (st.st_mtime == b->modtime
|
|
|
3982 /* If both are positive, accept them if they are off by one second. */
|
|
|
3983 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3984 && (st.st_mtime == b->modtime + 1
|
|
|
3985 || st.st_mtime == b->modtime - 1)))
|
|
|
3986 return Qt;
|
|
|
3987 return Qnil;
|
|
|
3988 }
|
|
|
3989
|
|
20
|
3990 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
0
|
3991 Clear out records of last mod time of visited file.
|
|
|
3992 Next attempt to save will certainly not complain of a discrepancy.
|
|
20
|
3993 */
|
|
|
3994 ())
|
|
0
|
3995 {
|
|
|
3996 current_buffer->modtime = 0;
|
|
|
3997 return Qnil;
|
|
|
3998 }
|
|
|
3999
|
|
20
|
4000 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
0
|
4001 Return the current buffer's recorded visited file modification time.
|
|
|
4002 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
4003 that `file-attributes' returns.
|
|
20
|
4004 */
|
|
|
4005 ())
|
|
0
|
4006 {
|
|
|
4007 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
4008 }
|
|
|
4009
|
|
20
|
4010 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
0
|
4011 Update buffer's recorded modification time from the visited file's time.
|
|
|
4012 Useful if the buffer was not read from the file normally
|
|
|
4013 or if the file itself has been changed for some known benign reason.
|
|
|
4014 An argument specifies the modification time value to use
|
|
|
4015 (instead of that of the visited file), in the form of a list
|
|
|
4016 (HIGH . LOW) or (HIGH LOW).
|
|
20
|
4017 */
|
|
|
4018 (time_list))
|
|
0
|
4019 {
|
|
116
|
4020 /* This function can call lisp */
|
|
0
|
4021 if (!NILP (time_list))
|
|
|
4022 {
|
|
|
4023 time_t the_time;
|
|
|
4024 lisp_to_time (time_list, &the_time);
|
|
|
4025 current_buffer->modtime = (int) the_time;
|
|
|
4026 }
|
|
|
4027 else
|
|
|
4028 {
|
|
|
4029 Lisp_Object filename;
|
|
|
4030 struct stat st;
|
|
|
4031 Lisp_Object handler;
|
|
114
|
4032 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
151
|
4033
|
|
114
|
4034 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
4035 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
0
|
4036
|
|
|
4037 /* If the file name has special constructs in it,
|
|
|
4038 call the corresponding file handler. */
|
|
|
4039 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
4040 UNGCPRO;
|
|
|
4041 if (!NILP (handler))
|
|
|
4042 /* The handler can find the file name the same way we did. */
|
|
|
4043 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
16
|
4044 else if (stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
0
|
4045 current_buffer->modtime = st.st_mtime;
|
|
|
4046 }
|
|
|
4047
|
|
|
4048 return Qnil;
|
|
|
4049 }
|
|
|
4050
|
|
|
4051 static Lisp_Object
|
|
|
4052 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4053 {
|
|
116
|
4054 /* This function can call lisp */
|
|
0
|
4055 if (gc_in_progress)
|
|
|
4056 return Qnil;
|
|
110
|
4057 /* Don't try printing an error message after everything is gone! */
|
|
|
4058 if (preparing_for_armageddon)
|
|
|
4059 return Qnil;
|
|
0
|
4060 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
4061 Fding (Qt, Qauto_save_error, Qnil);
|
|
82
|
4062 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4063 Fsleep_for (make_int (1));
|
|
82
|
4064 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4065 Fsleep_for (make_int (1));
|
|
82
|
4066 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
0
|
4067 Fsleep_for (make_int (1));
|
|
|
4068 return Qnil;
|
|
|
4069 }
|
|
|
4070
|
|
|
4071 static Lisp_Object
|
|
|
4072 auto_save_1 (Lisp_Object ignored)
|
|
|
4073 {
|
|
116
|
4074 /* This function can call lisp */
|
|
|
4075 /* #### I think caller is protecting current_buffer? */
|
|
0
|
4076 struct stat st;
|
|
|
4077 Lisp_Object fn = current_buffer->filename;
|
|
|
4078 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
4079
|
|
|
4080 if (!STRINGP (a))
|
|
|
4081 return (Qnil);
|
|
|
4082
|
|
|
4083 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
4084 if (STRINGP (fn) &&
|
|
16
|
4085 stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
0
|
4086 /* But make sure we can overwrite it later! */
|
|
|
4087 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
4088 else
|
|
|
4089 /* default mode for auto-save files of buffers with no file is
|
|
|
4090 readable by owner only. This may annoy some small number of
|
|
|
4091 people, but the alternative removes all privacy from email. */
|
|
|
4092 auto_save_mode_bits = 0600;
|
|
|
4093
|
|
|
4094 return
|
|
70
|
4095 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
4096 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
4097 #ifdef MULE
|
|
|
4098 Qescape_quoted
|
|
|
4099 #else
|
|
|
4100 Qnil
|
|
|
4101 #endif
|
|
|
4102 );
|
|
44
|
4103 }
|
|
|
4104
|
|
116
|
4105 static Lisp_Object
|
|
|
4106 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
4107 {
|
|
|
4108 /* #### this function should spew an error message about not being
|
|
|
4109 able to open the .saves file. */
|
|
|
4110 return Qnil;
|
|
|
4111 }
|
|
|
4112
|
|
|
4113 static Lisp_Object
|
|
|
4114 auto_save_expand_name (Lisp_Object name)
|
|
|
4115 {
|
|
|
4116 struct gcpro gcpro1;
|
|
|
4117
|
|
|
4118 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
4119 /* #### dmoore - this might not be neccessary, if condition_case_1
|
|
|
4120 protects it. but I don't think it does. */
|
|
|
4121 GCPRO1 (name);
|
|
|
4122 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
4123 }
|
|
|
4124
|
|
0
|
4125
|
|
|
4126 static Lisp_Object
|
|
|
4127 do_auto_save_unwind (Lisp_Object fd)
|
|
|
4128 {
|
|
|
4129 close (XINT (fd));
|
|
|
4130 return (fd);
|
|
|
4131 }
|
|
|
4132
|
|
|
4133 static Lisp_Object
|
|
|
4134 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
4135 {
|
|
|
4136 auto_saving = XINT (old_auto_saving);
|
|
|
4137 return Qnil;
|
|
|
4138 }
|
|
|
4139
|
|
|
4140 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
4141 and if so, tries to avoid touching lisp objects.
|
|
|
4142
|
|
|
4143 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
4144 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
4145 It's fairly important that we generate autosave files in that case!
|
|
|
4146 */
|
|
|
4147
|
|
20
|
4148 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
0
|
4149 Auto-save all buffers that need it.
|
|
|
4150 This is all buffers that have auto-saving enabled
|
|
|
4151 and are changed since last auto-saved.
|
|
|
4152 Auto-saving writes the buffer into a file
|
|
|
4153 so that your editing is not lost if the system crashes.
|
|
|
4154 This file is not the file you visited; that changes only when you save.
|
|
|
4155 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
4156
|
|
|
4157 Non-nil first argument means do not print any message if successful.
|
|
|
4158 Non-nil second argument means save only current buffer.
|
|
20
|
4159 */
|
|
|
4160 (no_message, current_only))
|
|
0
|
4161 {
|
|
116
|
4162 /* This function can call lisp */
|
|
110
|
4163 struct buffer *b;
|
|
0
|
4164 Lisp_Object tail, buf;
|
|
|
4165 int auto_saved = 0;
|
|
|
4166 int do_handled_files;
|
|
|
4167 Lisp_Object oquit = Qnil;
|
|
|
4168 Lisp_Object listfile = Qnil;
|
|
110
|
4169 Lisp_Object old;
|
|
0
|
4170 int listdesc = -1;
|
|
|
4171 int speccount = specpdl_depth ();
|
|
110
|
4172 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
4173
|
|
|
4174 XSETBUFFER (old, current_buffer);
|
|
|
4175 GCPRO3 (oquit, listfile, old);
|
|
0
|
4176 check_quit (); /* make Vquit_flag accurate */
|
|
|
4177 /* Ordinarily don't quit within this function,
|
|
|
4178 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
4179 oquit = Vquit_flag;
|
|
|
4180 Vquit_flag = Qnil;
|
|
|
4181
|
|
|
4182 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
4183 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
4184
|
|
|
4185 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
4186 no_message = Qt;
|
|
|
4187
|
|
|
4188 run_hook (Qauto_save_hook);
|
|
|
4189
|
|
|
4190 if (GC_STRINGP (Vauto_save_list_file_name))
|
|
116
|
4191 listfile = condition_case_1 (Qt,
|
|
|
4192 auto_save_expand_name,
|
|
|
4193 Vauto_save_list_file_name,
|
|
|
4194 auto_save_expand_name_error, Qnil);
|
|
0
|
4195
|
|
|
4196 /* Make sure auto_saving is reset. */
|
|
|
4197 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
4198
|
|
|
4199 auto_saving = 1;
|
|
|
4200
|
|
|
4201 /* First, save all files which don't have handlers. If Emacs is
|
|
|
4202 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
4203 in the first place, and it would be a shame if Emacs failed to
|
|
|
4204 autosave perfectly ordinary files because it couldn't handle some
|
|
|
4205 ange-ftp'd file. */
|
|
|
4206 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
4207 {
|
|
|
4208 for (tail = Vbuffer_alist;
|
|
|
4209 GC_CONSP (tail);
|
|
|
4210 tail = XCDR (tail))
|
|
|
4211 {
|
|
|
4212 buf = XCDR (XCAR (tail));
|
|
|
4213 b = XBUFFER (buf);
|
|
|
4214
|
|
|
4215 if (!GC_NILP (current_only)
|
|
|
4216 && b != current_buffer)
|
|
|
4217 continue;
|
|
151
|
4218
|
|
0
|
4219 /* Don't auto-save indirect buffers.
|
|
|
4220 The base buffer takes care of it. */
|
|
|
4221 if (b->base_buffer)
|
|
|
4222 continue;
|
|
|
4223
|
|
|
4224 /* Check for auto save enabled
|
|
|
4225 and file changed since last auto save
|
|
|
4226 and file changed since last real save. */
|
|
|
4227 if (GC_STRINGP (b->auto_save_file_name)
|
|
|
4228 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
4229 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
4230 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
4231 && XINT (b->save_length) >= 0
|
|
|
4232 && (do_handled_files
|
|
|
4233 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
4234 Qwrite_region))))
|
|
|
4235 {
|
|
|
4236 EMACS_TIME before_time, after_time;
|
|
|
4237
|
|
|
4238 EMACS_GET_TIME (before_time);
|
|
|
4239 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
4240 if (!preparing_for_armageddon
|
|
|
4241 && b->auto_save_failure_time >= 0
|
|
|
4242 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
4243 1200))
|
|
|
4244 continue;
|
|
|
4245
|
|
|
4246 if (!preparing_for_armageddon &&
|
|
|
4247 (XINT (b->save_length) * 10
|
|
|
4248 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
4249 /* A short file is likely to change a large fraction;
|
|
|
4250 spare the user annoying messages. */
|
|
|
4251 && XINT (b->save_length) > 5000
|
|
|
4252 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
4253 && !EQ (b->filename, Qnil)
|
|
|
4254 && NILP (no_message)
|
|
|
4255 && disable_auto_save_when_buffer_shrinks)
|
|
|
4256 {
|
|
|
4257 /* It has shrunk too much; turn off auto-saving here.
|
|
|
4258 Unless we're about to crash, in which case auto-save it
|
|
|
4259 anyway.
|
|
|
4260 */
|
|
|
4261 message
|
|
|
4262 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
16
|
4263 XSTRING_DATA (b->name));
|
|
0
|
4264 /* Turn off auto-saving until there's a real save,
|
|
|
4265 and prevent any more warnings. */
|
|
|
4266 b->save_length = make_int (-1);
|
|
|
4267 if (!gc_in_progress)
|
|
|
4268 Fsleep_for (make_int (1));
|
|
|
4269 continue;
|
|
|
4270 }
|
|
|
4271 set_buffer_internal (b);
|
|
|
4272 if (!auto_saved && GC_NILP (no_message))
|
|
|
4273 {
|
|
|
4274 static CONST unsigned char *msg
|
|
|
4275 = (CONST unsigned char *) "Auto-saving...";
|
|
|
4276 echo_area_message (selected_frame (), msg, Qnil,
|
|
|
4277 0, strlen ((CONST char *) msg),
|
|
|
4278 Qauto_saving);
|
|
|
4279 }
|
|
|
4280
|
|
|
4281 /* Open the auto-save list file, if necessary.
|
|
|
4282 We only do this now so that the file only exists
|
|
|
4283 if we actually auto-saved any files. */
|
|
|
4284 if (!auto_saved && GC_STRINGP (listfile) && listdesc < 0)
|
|
|
4285 {
|
|
|
4286 #ifdef DOS_NT
|
|
70
|
4287 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
167
|
4288 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY,
|
|
0
|
4289 S_IREAD | S_IWRITE);
|
|
|
4290 #else /* not DOS_NT */
|
|
16
|
4291 listdesc = creat ((char *) XSTRING_DATA (listfile), 0666);
|
|
0
|
4292 #endif /* not DOS_NT */
|
|
|
4293
|
|
|
4294 /* Arrange to close that file whether or not we get
|
|
|
4295 an error. */
|
|
|
4296 if (listdesc >= 0)
|
|
|
4297 record_unwind_protect (do_auto_save_unwind,
|
|
|
4298 make_int (listdesc));
|
|
|
4299 }
|
|
|
4300
|
|
|
4301 /* Record all the buffers that we are auto-saving in
|
|
|
4302 the special file that lists them. For each of
|
|
|
4303 these buffers, record visited name (if any) and
|
|
|
4304 auto save name. */
|
|
|
4305 if (listdesc >= 0)
|
|
|
4306 {
|
|
|
4307 Extbyte *auto_save_file_name_ext;
|
|
|
4308 Extcount auto_save_file_name_ext_len;
|
|
151
|
4309
|
|
0
|
4310 GET_STRING_FILENAME_DATA_ALLOCA
|
|
|
4311 (b->auto_save_file_name,
|
|
|
4312 auto_save_file_name_ext,
|
|
|
4313 auto_save_file_name_ext_len);
|
|
|
4314 if (!NILP (b->filename))
|
|
|
4315 {
|
|
|
4316 Extbyte *filename_ext;
|
|
|
4317 Extcount filename_ext_len;
|
|
151
|
4318
|
|
0
|
4319 GET_STRING_FILENAME_DATA_ALLOCA (b->filename,
|
|
|
4320 filename_ext,
|
|
|
4321 filename_ext_len);
|
|
|
4322 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4323 }
|
|
|
4324 write (listdesc, "\n", 1);
|
|
|
4325 write (listdesc, auto_save_file_name_ext,
|
|
|
4326 auto_save_file_name_ext_len);
|
|
|
4327 write (listdesc, "\n", 1);
|
|
|
4328 }
|
|
|
4329
|
|
110
|
4330 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4331 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4332 cause lisp handlers to run. Those handlers may kill
|
|
|
4333 the buffer and then GC. Since the buffer is killed,
|
|
|
4334 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4335 by the GC. We also need to protect tail. */
|
|
|
4336 /* #### There is probably a lot of other code which has
|
|
|
4337 pointers into buffers which may get blown away by
|
|
|
4338 handlers. */
|
|
|
4339 {
|
|
169
|
4340 struct gcpro ngcpro1, ngcpro2;
|
|
|
4341 NGCPRO2 (buf, tail);
|
|
110
|
4342 condition_case_1 (Qt,
|
|
|
4343 auto_save_1, Qnil,
|
|
|
4344 auto_save_error, Qnil);
|
|
169
|
4345 NUNGCPRO;
|
|
110
|
4346 }
|
|
|
4347 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4348 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4349 XSETBUFFER (old, current_buffer);
|
|
|
4350
|
|
|
4351 set_buffer_internal (XBUFFER (old));
|
|
0
|
4352 auto_saved++;
|
|
151
|
4353
|
|
110
|
4354 /* Handler killed their own buffer! */
|
|
|
4355 if (!BUFFER_LIVE_P(b))
|
|
|
4356 continue;
|
|
|
4357
|
|
0
|
4358 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4359 b->save_length = make_int (BUF_SIZE (b));
|
|
|
4360 EMACS_GET_TIME (after_time);
|
|
|
4361 /* If auto-save took more than 60 seconds,
|
|
|
4362 assume it was an NFS failure that got a timeout. */
|
|
|
4363 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4364 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4365 }
|
|
|
4366 }
|
|
|
4367 }
|
|
|
4368
|
|
|
4369 /* Prevent another auto save till enough input events come in. */
|
|
|
4370 if (auto_saved)
|
|
|
4371 record_auto_save ();
|
|
|
4372
|
|
|
4373 /* If we didn't save anything into the listfile, remove the old
|
|
|
4374 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4375 rather than before in case we get a crash attempting to autosave
|
|
|
4376 (in that case we'd still want the old one around). */
|
|
|
4377 if (listdesc < 0 && !auto_saved && GC_STRINGP (listfile))
|
|
16
|
4378 unlink ((char *) XSTRING_DATA (listfile));
|
|
0
|
4379
|
|
|
4380 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4381 if (auto_saved && NILP (no_message)
|
|
|
4382 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4383 {
|
|
|
4384 static CONST unsigned char *msg
|
|
|
4385 = (CONST unsigned char *)"Auto-saving...done";
|
|
|
4386 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
|
4387 strlen ((CONST char *) msg), Qauto_saving);
|
|
|
4388 }
|
|
|
4389
|
|
|
4390 Vquit_flag = oquit;
|
|
|
4391
|
|
|
4392 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4393 }
|
|
|
4394
|
|
20
|
4395 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
0
|
4396 Mark current buffer as auto-saved with its current text.
|
|
|
4397 No auto-save file will be written until the buffer changes again.
|
|
20
|
4398 */
|
|
|
4399 ())
|
|
0
|
4400 {
|
|
|
4401 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4402 current_buffer->save_length = make_int (BUF_SIZE (current_buffer));
|
|
|
4403 current_buffer->auto_save_failure_time = -1;
|
|
|
4404 return Qnil;
|
|
|
4405 }
|
|
|
4406
|
|
20
|
4407 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
0
|
4408 Clear any record of a recent auto-save failure in the current buffer.
|
|
20
|
4409 */
|
|
|
4410 ())
|
|
0
|
4411 {
|
|
|
4412 current_buffer->auto_save_failure_time = -1;
|
|
|
4413 return Qnil;
|
|
|
4414 }
|
|
|
4415
|
|
20
|
4416 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
0
|
4417 Return t if buffer has been auto-saved since last read in or saved.
|
|
20
|
4418 */
|
|
|
4419 ())
|
|
0
|
4420 {
|
|
|
4421 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4422 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4423 }
|
|
|
4424
|
|
|
4425
|
|
|
4426 /************************************************************************/
|
|
|
4427 /* initialization */
|
|
|
4428 /************************************************************************/
|
|
|
4429
|
|
|
4430 void
|
|
|
4431 syms_of_fileio (void)
|
|
|
4432 {
|
|
|
4433 defsymbol (&Qexpand_file_name, "expand-file-name");
|
|
|
4434 defsymbol (&Qfile_truename, "file-truename");
|
|
|
4435 defsymbol (&Qsubstitute_in_file_name, "substitute-in-file-name");
|
|
|
4436 defsymbol (&Qdirectory_file_name, "directory-file-name");
|
|
|
4437 defsymbol (&Qfile_name_directory, "file-name-directory");
|
|
|
4438 defsymbol (&Qfile_name_nondirectory, "file-name-nondirectory");
|
|
|
4439 defsymbol (&Qunhandled_file_name_directory, "unhandled-file-name-directory");
|
|
|
4440 defsymbol (&Qfile_name_as_directory, "file-name-as-directory");
|
|
|
4441 defsymbol (&Qcopy_file, "copy-file");
|
|
|
4442 defsymbol (&Qmake_directory_internal, "make-directory-internal");
|
|
|
4443 defsymbol (&Qdelete_directory, "delete-directory");
|
|
|
4444 defsymbol (&Qdelete_file, "delete-file");
|
|
|
4445 defsymbol (&Qrename_file, "rename-file");
|
|
|
4446 defsymbol (&Qadd_name_to_file, "add-name-to-file");
|
|
|
4447 defsymbol (&Qmake_symbolic_link, "make-symbolic-link");
|
|
|
4448 defsymbol (&Qfile_exists_p, "file-exists-p");
|
|
|
4449 defsymbol (&Qfile_executable_p, "file-executable-p");
|
|
|
4450 defsymbol (&Qfile_readable_p, "file-readable-p");
|
|
|
4451 defsymbol (&Qfile_symlink_p, "file-symlink-p");
|
|
|
4452 defsymbol (&Qfile_writable_p, "file-writable-p");
|
|
|
4453 defsymbol (&Qfile_directory_p, "file-directory-p");
|
|
|
4454 defsymbol (&Qfile_regular_p, "file-regular-p");
|
|
|
4455 defsymbol (&Qfile_accessible_directory_p, "file-accessible-directory-p");
|
|
|
4456 defsymbol (&Qfile_modes, "file-modes");
|
|
|
4457 defsymbol (&Qset_file_modes, "set-file-modes");
|
|
|
4458 defsymbol (&Qfile_newer_than_file_p, "file-newer-than-file-p");
|
|
|
4459 defsymbol (&Qinsert_file_contents, "insert-file-contents");
|
|
|
4460 defsymbol (&Qwrite_region, "write-region");
|
|
|
4461 defsymbol (&Qverify_visited_file_modtime, "verify-visited-file-modtime");
|
|
|
4462 defsymbol (&Qset_visited_file_modtime, "set-visited-file-modtime");
|
|
|
4463 #ifdef DOS_NT
|
|
|
4464 defsymbol (&Qfind_buffer_file_type, "find-buffer-file-type");
|
|
|
4465 #endif /* DOS_NT */
|
|
|
4466 defsymbol (&Qcar_less_than_car, "car-less-than-car"); /* Vomitous! */
|
|
|
4467
|
|
|
4468 defsymbol (&Qfile_name_handler_alist, "file-name-handler-alist");
|
|
|
4469 defsymbol (&Qauto_save_hook, "auto-save-hook");
|
|
|
4470 defsymbol (&Qauto_save_error, "auto-save-error");
|
|
|
4471 defsymbol (&Qauto_saving, "auto-saving");
|
|
|
4472
|
|
|
4473 defsymbol (&Qformat_decode, "format-decode");
|
|
|
4474 defsymbol (&Qformat_annotate_function, "format-annotate-function");
|
|
|
4475
|
|
|
4476 defsymbol (&Qcompute_buffer_file_truename, "compute-buffer-file-truename");
|
|
|
4477 deferror (&Qfile_error, "file-error", "File error", Qio_error);
|
|
|
4478 deferror (&Qfile_already_exists, "file-already-exists",
|
|
|
4479 "File already exists", Qfile_error);
|
|
|
4480
|
|
20
|
4481 DEFSUBR (Ffind_file_name_handler);
|
|
|
4482
|
|
|
4483 DEFSUBR (Ffile_name_directory);
|
|
|
4484 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4485 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4486 DEFSUBR (Ffile_name_as_directory);
|
|
|
4487 DEFSUBR (Fdirectory_file_name);
|
|
|
4488 DEFSUBR (Fmake_temp_name);
|
|
|
4489 DEFSUBR (Fexpand_file_name);
|
|
|
4490 DEFSUBR (Ffile_truename);
|
|
|
4491 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4492 DEFSUBR (Fcopy_file);
|
|
|
4493 DEFSUBR (Fmake_directory_internal);
|
|
|
4494 DEFSUBR (Fdelete_directory);
|
|
|
4495 DEFSUBR (Fdelete_file);
|
|
|
4496 DEFSUBR (Frename_file);
|
|
|
4497 DEFSUBR (Fadd_name_to_file);
|
|
0
|
4498 #ifdef S_IFLNK
|
|
20
|
4499 DEFSUBR (Fmake_symbolic_link);
|
|
0
|
4500 #endif /* S_IFLNK */
|
|
|
4501 #ifdef HPUX_NET
|
|
20
|
4502 DEFSUBR (Fsysnetunam);
|
|
0
|
4503 #endif /* HPUX_NET */
|
|
20
|
4504 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4505 DEFSUBR (Ffile_exists_p);
|
|
|
4506 DEFSUBR (Ffile_executable_p);
|
|
|
4507 DEFSUBR (Ffile_readable_p);
|
|
|
4508 DEFSUBR (Ffile_writable_p);
|
|
|
4509 DEFSUBR (Ffile_symlink_p);
|
|
|
4510 DEFSUBR (Ffile_directory_p);
|
|
|
4511 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4512 DEFSUBR (Ffile_regular_p);
|
|
|
4513 DEFSUBR (Ffile_modes);
|
|
|
4514 DEFSUBR (Fset_file_modes);
|
|
|
4515 DEFSUBR (Fset_default_file_modes);
|
|
|
4516 DEFSUBR (Fdefault_file_modes);
|
|
|
4517 DEFSUBR (Funix_sync);
|
|
|
4518 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4519 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4520 DEFSUBR (Fwrite_region_internal);
|
|
|
4521 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4522 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
0
|
4523 #if 0
|
|
20
|
4524 DEFSUBR (Fencrypt_string);
|
|
|
4525 DEFSUBR (Fdecrypt_string);
|
|
0
|
4526 #endif
|
|
20
|
4527 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4528 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4529 DEFSUBR (Fvisited_file_modtime);
|
|
|
4530 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4531
|
|
|
4532 DEFSUBR (Fdo_auto_save);
|
|
|
4533 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4534 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4535 DEFSUBR (Frecent_auto_save_p);
|
|
0
|
4536 }
|
|
|
4537
|
|
|
4538 void
|
|
|
4539 vars_of_fileio (void)
|
|
|
4540 {
|
|
|
4541 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4542 *Format in which to write auto-save files.
|
|
|
4543 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4544 If it is t, which is the default, auto-save files are written in the
|
|
|
4545 same format as a regular save would use.
|
|
|
4546 */ );
|
|
|
4547 Vauto_save_file_format = Qt;
|
|
|
4548
|
|
|
4549 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4550 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4551 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4552 HANDLER.
|
|
|
4553
|
|
|
4554 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4555 to be handled; the remaining arguments are the arguments that were
|
|
|
4556 passed to that primitive. For example, if you do
|
|
|
4557 (file-exists-p FILENAME)
|
|
|
4558 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4559 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4560 The function `find-file-name-handler' checks this list for a handler
|
|
|
4561 for its argument.
|
|
|
4562 */ );
|
|
|
4563 Vfile_name_handler_alist = Qnil;
|
|
|
4564
|
|
|
4565 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4566 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4567 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4568 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4569 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4570 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4571 */ );
|
|
|
4572 Vafter_insert_file_functions = Qnil;
|
|
|
4573
|
|
|
4574 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4575 &Vwrite_region_annotate_functions /*
|
|
|
4576 A list of functions to be called at the start of `write-region'.
|
|
183
|
4577 Each is passed two arguments, START and END, as for `write-region'.
|
|
0
|
4578 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4579 effectively inserted at the specified positions of the file being written
|
|
|
4580 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4581 sorted into increasing order. If there are several functions in the list,
|
|
|
4582 the several lists are merged destructively.
|
|
|
4583 */ );
|
|
|
4584 Vwrite_region_annotate_functions = Qnil;
|
|
|
4585
|
|
|
4586 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4587 &Vwrite_region_annotations_so_far /*
|
|
|
4588 When an annotation function is called, this holds the previous annotations.
|
|
|
4589 These are the annotations made by other annotation functions
|
|
|
4590 that were already called. See also `write-region-annotate-functions'.
|
|
|
4591 */ );
|
|
|
4592 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4593
|
|
|
4594 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4595 A list of file name handlers that temporarily should not be used.
|
|
|
4596 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4597 */ );
|
|
|
4598 Vinhibit_file_name_handlers = Qnil;
|
|
|
4599
|
|
|
4600 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4601 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4602 */ );
|
|
|
4603 Vinhibit_file_name_operation = Qnil;
|
|
|
4604
|
|
|
4605 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4606 File name in which we write a list of all auto save file names.
|
|
|
4607 */ );
|
|
|
4608 Vauto_save_list_file_name = Qnil;
|
|
|
4609
|
|
|
4610 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4611 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4612 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4613 This is to prevent you from losing your edits if you accidentally
|
|
|
4614 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4615 Saving the buffer normally turns auto-save back on.
|
|
|
4616 */ );
|
|
|
4617 disable_auto_save_when_buffer_shrinks = 1;
|
|
235
|
4618
|
|
211
|
4619 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4620 *Directory separator character for built-in functions that return file names.
|
|
|
4621 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4622 This variable affects the built-in functions only on Windows,
|
|
|
4623 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4624 what the normal separator is.
|
|
|
4625 */ );
|
|
235
|
4626 Vdirectory_sep_char = make_char('/');
|
|
|
4627
|
|
|
4628 #ifdef DOS_NT
|
|
211
|
4629 DEFVAR_LISP ("insert-file-contents-allow-replace", &Vinsert_file_contents_allow_replace /*
|
|
|
4630 *Allow REPLACE option of insert-file-contents to preserve markers.
|
|
|
4631 If non-nil, the REPLACE option works as described, preserving markers.
|
|
|
4632 If nil, the REPLACE option is implemented by deleting the visible region
|
|
|
4633 then inserting the file contents as if REPLACE was nil.
|
|
|
4634
|
|
|
4635 This option is only meaningful on Windows.
|
|
|
4636 */ );
|
|
|
4637 Vinsert_file_contents_allow_replace = Qt;
|
|
|
4638 #endif
|
|
0
|
4639 }
|
