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