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428
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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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563
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3 Copyright (C) 1996, 2001 Ben Wing.
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428
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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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23 /* More syncing: FSF Emacs 19.34.6 by Marc Paquette <marcpa@cam.org> */
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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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36 #ifdef FILE_CODING
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37 #include "file-coding.h"
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38 #endif
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39
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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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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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53 #endif /* HPUX_PRE_8_0 */
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54 #endif /* HPUX */
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55
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657
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56 #if defined(WIN32_NATIVE) || defined(CYGWIN)
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57 #define WIN32_FILENAMES
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442
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58 #ifdef WIN32_NATIVE
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592
|
59 #include "nt.h"
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657
|
60 #endif /* WIN32_NATIVE */
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428
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61 #define IS_DRIVE(x) isalpha (x)
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62 /* Need to lower-case the drive letter, or else expanded
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63 filenames will sometimes compare inequal, because
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64 `expand-file-name' doesn't always down-case the drive letter. */
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65 #define DRIVE_LETTER(x) tolower (x)
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657
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66 #ifndef CORRECT_DIR_SEPS
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67 #define CORRECT_DIR_SEPS(s) \
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68 normalize_filename(s, DIRECTORY_SEP)
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69 /* Default implementation that coerces a file to use path_sep. */
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70 static void
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71 normalize_filename (char *fp, char path_sep)
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72 {
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73 /* Always lower-case drive letters a-z, even if the filesystem
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74 preserves case in filenames.
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75 This is so filenames can be compared by string comparison
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76 functions that are case-sensitive. Even case-preserving filesystems
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77 do not distinguish case in drive letters. */
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78 if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z')
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79 {
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80 *fp += 'a' - 'A';
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81 fp += 2;
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82 }
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83
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84 while (*fp)
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85 {
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86 if (*fp == '/' || *fp == '\\')
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87 *fp = path_sep;
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88 fp++;
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89 }
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90 }
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91 #endif /* CORRECT_DIR_SEPS */
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92 #endif /* WIN32_NATIVE || CYGWIN */
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428
|
93
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94 int lisp_to_time (Lisp_Object, time_t *);
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95 Lisp_Object time_to_lisp (time_t);
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96
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97 /* Nonzero during writing of auto-save files */
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98 static int auto_saving;
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99
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100 /* Set by auto_save_1 to mode of original file so Fwrite_region_internal
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101 will create a new file with the same mode as the original */
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102 static int auto_save_mode_bits;
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103
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104 /* Alist of elements (REGEXP . HANDLER) for file names
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105 whose I/O is done with a special handler. */
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106 Lisp_Object Vfile_name_handler_alist;
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107
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108 /* Format for auto-save files */
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109 Lisp_Object Vauto_save_file_format;
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110
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111 /* Lisp functions for translating file formats */
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112 Lisp_Object Qformat_decode, Qformat_annotate_function;
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113
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114 /* Functions to be called to process text properties in inserted file. */
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115 Lisp_Object Vafter_insert_file_functions;
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116
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117 /* Functions to be called to create text property annotations for file. */
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118 Lisp_Object Vwrite_region_annotate_functions;
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119
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120 /* During build_annotations, each time an annotation function is called,
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121 this holds the annotations made by the previous functions. */
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122 Lisp_Object Vwrite_region_annotations_so_far;
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123
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124 /* File name in which we write a list of all our auto save files. */
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125 Lisp_Object Vauto_save_list_file_name;
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126
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444
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127 /* Prefix used to construct Vauto_save_list_file_name. */
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128 Lisp_Object Vauto_save_list_file_prefix;
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129
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130 /* When non-nil, it prevents auto-save list file creation. */
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131 int inhibit_auto_save_session;
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132
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428
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133 int disable_auto_save_when_buffer_shrinks;
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134
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135 Lisp_Object Vdirectory_sep_char;
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136
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137 /* These variables describe handlers that have "already" had a chance
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138 to handle the current operation.
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139
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140 Vinhibit_file_name_handlers is a list of file name handlers.
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141 Vinhibit_file_name_operation is the operation being handled.
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142 If we try to handle that operation, we ignore those handlers. */
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143
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144 static Lisp_Object Vinhibit_file_name_handlers;
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145 static Lisp_Object Vinhibit_file_name_operation;
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146
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563
|
147 Lisp_Object Qfile_already_exists;
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428
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148
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149 Lisp_Object Qauto_save_hook;
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150 Lisp_Object Qauto_save_error;
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151 Lisp_Object Qauto_saving;
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152
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153 Lisp_Object Qcar_less_than_car;
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154
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155 Lisp_Object Qcompute_buffer_file_truename;
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156
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157 EXFUN (Frunning_temacs_p, 0);
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158
|
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563
|
159 /* DATA can be anything acceptable to signal_error ().
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160 */
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161
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162 DOESNT_RETURN
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163 report_file_type_error (Lisp_Object errtype, Lisp_Object oserrmess,
|
|
609
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164 const CBufbyte *string, Lisp_Object data)
|
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563
|
165 {
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166 struct gcpro gcpro1;
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167 Lisp_Object errdata = build_error_data (NULL, data);
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168
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169 GCPRO1 (errdata);
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170 errdata = Fcons (build_translated_string (string),
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171 Fcons (oserrmess, errdata));
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172 signal_error_1 (errtype, errdata);
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173 UNGCPRO; /* not reached */
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|
174 }
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175
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176 DOESNT_RETURN
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|
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177 report_error_with_errno (Lisp_Object errtype,
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|
609
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178 const CBufbyte *string, Lisp_Object data)
|
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563
|
179 {
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|
|
180 report_file_type_error (errtype, lisp_strerror (errno), string, data);
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|
|
181 }
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182
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428
|
183 /* signal a file error when errno contains a meaningful value. */
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184
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185 DOESNT_RETURN
|
|
609
|
186 report_file_error (const CBufbyte *string, Lisp_Object data)
|
|
428
|
187 {
|
|
563
|
188 report_error_with_errno (Qfile_error, string, data);
|
|
428
|
189 }
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190
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191
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192 /* Just like strerror(3), except return a lisp string instead of char *.
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193 The string needs to be converted since it may be localized.
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194 Perhaps this should use strerror-coding-system instead? */
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195 Lisp_Object
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196 lisp_strerror (int errnum)
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|
|
197 {
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|
440
|
198 return build_ext_string (strerror (errnum), Qnative);
|
|
428
|
199 }
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200
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201 static Lisp_Object
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202 close_file_unwind (Lisp_Object fd)
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|
|
203 {
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|
|
204 if (CONSP (fd))
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205 {
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|
|
206 if (INTP (XCAR (fd)))
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|
207 close (XINT (XCAR (fd)));
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208
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|
|
209 free_cons (XCONS (fd));
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|
|
210 }
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|
211 else
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|
|
212 close (XINT (fd));
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213
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|
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214 return Qnil;
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|
|
215 }
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216
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|
|
217 static Lisp_Object
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|
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218 delete_stream_unwind (Lisp_Object stream)
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|
|
219 {
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|
|
220 Lstream_delete (XLSTREAM (stream));
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|
|
221 return Qnil;
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|
|
222 }
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223
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|
224 /* Restore point, having saved it as a marker. */
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225
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|
|
226 static Lisp_Object
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|
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227 restore_point_unwind (Lisp_Object point_marker)
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|
|
228 {
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|
|
229 BUF_SET_PT (current_buffer, marker_position (point_marker));
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|
|
230 return Fset_marker (point_marker, Qnil, Qnil);
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|
|
231 }
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232
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|
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233 /* Versions of read() and write() that allow quitting out of the actual
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234 I/O. We don't use immediate_quit (i.e. direct longjmp() out of the
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|
|
235 signal handler) because that's way too losing.
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236
|
|
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237 (#### Actually, longjmp()ing out of the signal handler may not be
|
|
613
|
238 as losing as I thought. See qxe_reliable_signal() in sysdep.c.) */
|
|
428
|
239
|
|
647
|
240 Memory_Count
|
|
|
241 read_allowing_quit (int fildes, void *buf, Memory_Count size)
|
|
428
|
242 {
|
|
|
243 QUIT;
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|
|
244 return sys_read_1 (fildes, buf, size, 1);
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|
|
245 }
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|
|
246
|
|
647
|
247 Memory_Count
|
|
|
248 write_allowing_quit (int fildes, const void *buf, Memory_Count size)
|
|
428
|
249 {
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|
|
250 QUIT;
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|
|
251 return sys_write_1 (fildes, buf, size, 1);
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|
252 }
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253
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254
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255 Lisp_Object Qexpand_file_name;
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|
256 Lisp_Object Qfile_truename;
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|
257 Lisp_Object Qsubstitute_in_file_name;
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|
258 Lisp_Object Qdirectory_file_name;
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259 Lisp_Object Qfile_name_directory;
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|
260 Lisp_Object Qfile_name_nondirectory;
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|
|
261 Lisp_Object Qunhandled_file_name_directory;
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|
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262 Lisp_Object Qfile_name_as_directory;
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|
|
263 Lisp_Object Qcopy_file;
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|
|
264 Lisp_Object Qmake_directory_internal;
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|
265 Lisp_Object Qdelete_directory;
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266 Lisp_Object Qdelete_file;
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|
267 Lisp_Object Qrename_file;
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268 Lisp_Object Qadd_name_to_file;
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|
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269 Lisp_Object Qmake_symbolic_link;
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270 Lisp_Object Qfile_exists_p;
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|
271 Lisp_Object Qfile_executable_p;
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|
272 Lisp_Object Qfile_readable_p;
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273 Lisp_Object Qfile_symlink_p;
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274 Lisp_Object Qfile_writable_p;
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275 Lisp_Object Qfile_directory_p;
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276 Lisp_Object Qfile_regular_p;
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277 Lisp_Object Qfile_accessible_directory_p;
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|
|
278 Lisp_Object Qfile_modes;
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|
|
279 Lisp_Object Qset_file_modes;
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280 Lisp_Object Qfile_newer_than_file_p;
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281 Lisp_Object Qinsert_file_contents;
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282 Lisp_Object Qwrite_region;
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283 Lisp_Object Qverify_visited_file_modtime;
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284 Lisp_Object Qset_visited_file_modtime;
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285
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286 /* If FILENAME is handled specially on account of its syntax,
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287 return its handler function. Otherwise, return nil. */
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288
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289 DEFUN ("find-file-name-handler", Ffind_file_name_handler, 1, 2, 0, /*
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|
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290 Return FILENAME's handler function for OPERATION, if it has one.
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|
291 Otherwise, return nil.
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|
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292 A file name is handled if one of the regular expressions in
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|
|
293 `file-name-handler-alist' matches it.
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|
|
294
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|
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295 If OPERATION equals `inhibit-file-name-operation', then we ignore
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296 any handlers that are members of `inhibit-file-name-handlers',
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|
|
297 but we still do run any other handlers. This lets handlers
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298 use the standard functions without calling themselves recursively.
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|
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299 */
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300 (filename, operation))
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|
|
301 {
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|
|
302 /* This function does not GC */
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|
|
303 /* This function can be called during GC */
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|
|
304 /* This function must not munge the match data. */
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|
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305 Lisp_Object chain, inhibited_handlers;
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|
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306
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|
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307 CHECK_STRING (filename);
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|
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308
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309 if (EQ (operation, Vinhibit_file_name_operation))
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|
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310 inhibited_handlers = Vinhibit_file_name_handlers;
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|
|
311 else
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|
|
312 inhibited_handlers = Qnil;
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|
|
313
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|
|
314 EXTERNAL_LIST_LOOP (chain, Vfile_name_handler_alist)
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|
|
315 {
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|
|
316 Lisp_Object elt = XCAR (chain);
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|
|
317 if (CONSP (elt))
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|
|
318 {
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|
|
319 Lisp_Object string = XCAR (elt);
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|
|
320 if (STRINGP (string)
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|
|
321 && (fast_lisp_string_match (string, filename) >= 0))
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|
|
322 {
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|
|
323 Lisp_Object handler = XCDR (elt);
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|
|
324 if (NILP (Fmemq (handler, inhibited_handlers)))
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|
|
325 return handler;
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|
|
326 }
|
|
|
327 }
|
|
|
328 QUIT;
|
|
|
329 }
|
|
|
330 return Qnil;
|
|
|
331 }
|
|
|
332
|
|
|
333 static Lisp_Object
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|
|
334 call2_check_string (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
335 {
|
|
|
336 /* This function can call lisp */
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|
|
337 Lisp_Object result = call2 (fn, arg0, arg1);
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|
|
338 CHECK_STRING (result);
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|
|
339 return result;
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|
|
340 }
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|
|
341
|
|
|
342 static Lisp_Object
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|
|
343 call2_check_string_or_nil (Lisp_Object fn, Lisp_Object arg0, Lisp_Object arg1)
|
|
|
344 {
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|
|
345 /* This function can call lisp */
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|
|
346 Lisp_Object result = call2 (fn, arg0, arg1);
|
|
|
347 if (!NILP (result))
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|
|
348 CHECK_STRING (result);
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|
|
349 return result;
|
|
|
350 }
|
|
|
351
|
|
|
352 static Lisp_Object
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|
|
353 call3_check_string (Lisp_Object fn, Lisp_Object arg0,
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|
|
354 Lisp_Object arg1, Lisp_Object arg2)
|
|
|
355 {
|
|
|
356 /* This function can call lisp */
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|
|
357 Lisp_Object result = call3 (fn, arg0, arg1, arg2);
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|
|
358 CHECK_STRING (result);
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|
|
359 return result;
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|
|
360 }
|
|
|
361
|
|
|
362
|
|
|
363 DEFUN ("file-name-directory", Ffile_name_directory, 1, 1, 0, /*
|
|
444
|
364 Return the directory component in file name FILENAME.
|
|
|
365 Return nil if FILENAME does not include a directory.
|
|
428
|
366 Otherwise return a directory spec.
|
|
|
367 Given a Unix syntax file name, returns a string ending in slash.
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|
|
368 */
|
|
444
|
369 (filename))
|
|
428
|
370 {
|
|
442
|
371 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
372 Bufbyte *beg;
|
|
|
373 Bufbyte *p;
|
|
|
374 Lisp_Object handler;
|
|
|
375
|
|
444
|
376 CHECK_STRING (filename);
|
|
428
|
377
|
|
|
378 /* If the file name has special constructs in it,
|
|
|
379 call the corresponding file handler. */
|
|
444
|
380 handler = Ffind_file_name_handler (filename, Qfile_name_directory);
|
|
428
|
381 if (!NILP (handler))
|
|
444
|
382 return call2_check_string_or_nil (handler, Qfile_name_directory, filename);
|
|
428
|
383
|
|
|
384 #ifdef FILE_SYSTEM_CASE
|
|
444
|
385 filename = FILE_SYSTEM_CASE (filename);
|
|
428
|
386 #endif
|
|
444
|
387 beg = XSTRING_DATA (filename);
|
|
|
388 p = beg + XSTRING_LENGTH (filename);
|
|
428
|
389
|
|
|
390 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
657
|
391 #ifdef WIN32_FILENAMES
|
|
428
|
392 /* only recognize drive specifier at beginning */
|
|
|
393 && !(p[-1] == ':' && p == beg + 2)
|
|
|
394 #endif
|
|
|
395 ) p--;
|
|
|
396
|
|
|
397 if (p == beg)
|
|
|
398 return Qnil;
|
|
442
|
399 #ifdef WIN32_NATIVE
|
|
428
|
400 /* Expansion of "c:" to drive and default directory. */
|
|
|
401 /* (NT does the right thing.) */
|
|
|
402 if (p == beg + 2 && beg[1] == ':')
|
|
|
403 {
|
|
|
404 /* MAXPATHLEN+1 is guaranteed to be enough space for getdefdir. */
|
|
442
|
405 Bufbyte *res = (Bufbyte*) alloca (MAXPATHLEN + 1);
|
|
|
406 if (_getdcwd (toupper (*beg) - 'A' + 1, (char *)res, MAXPATHLEN))
|
|
428
|
407 {
|
|
|
408 char *c=((char *) res) + strlen ((char *) res);
|
|
|
409 if (!IS_DIRECTORY_SEP (*c))
|
|
|
410 {
|
|
|
411 *c++ = DIRECTORY_SEP;
|
|
|
412 *c = '\0';
|
|
|
413 }
|
|
|
414 beg = res;
|
|
|
415 p = beg + strlen ((char *) beg);
|
|
|
416 }
|
|
|
417 }
|
|
442
|
418 #endif /* WIN32_NATIVE */
|
|
428
|
419 return make_string (beg, p - beg);
|
|
|
420 }
|
|
|
421
|
|
|
422 DEFUN ("file-name-nondirectory", Ffile_name_nondirectory, 1, 1, 0, /*
|
|
444
|
423 Return file name FILENAME sans its directory.
|
|
428
|
424 For example, in a Unix-syntax file name,
|
|
|
425 this is everything after the last slash,
|
|
|
426 or the entire name if it contains no slash.
|
|
|
427 */
|
|
444
|
428 (filename))
|
|
428
|
429 {
|
|
442
|
430 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
431 Bufbyte *beg, *p, *end;
|
|
|
432 Lisp_Object handler;
|
|
|
433
|
|
444
|
434 CHECK_STRING (filename);
|
|
428
|
435
|
|
|
436 /* If the file name has special constructs in it,
|
|
|
437 call the corresponding file handler. */
|
|
444
|
438 handler = Ffind_file_name_handler (filename, Qfile_name_nondirectory);
|
|
428
|
439 if (!NILP (handler))
|
|
444
|
440 return call2_check_string (handler, Qfile_name_nondirectory, filename);
|
|
|
441
|
|
|
442 beg = XSTRING_DATA (filename);
|
|
|
443 end = p = beg + XSTRING_LENGTH (filename);
|
|
428
|
444
|
|
|
445 while (p != beg && !IS_ANY_SEP (p[-1])
|
|
657
|
446 #ifdef WIN32_FILENAMES
|
|
428
|
447 /* only recognize drive specifier at beginning */
|
|
|
448 && !(p[-1] == ':' && p == beg + 2)
|
|
|
449 #endif
|
|
|
450 ) p--;
|
|
|
451
|
|
|
452 return make_string (p, end - p);
|
|
|
453 }
|
|
|
454
|
|
|
455 DEFUN ("unhandled-file-name-directory", Funhandled_file_name_directory, 1, 1, 0, /*
|
|
|
456 Return a directly usable directory name somehow associated with FILENAME.
|
|
|
457 A `directly usable' directory name is one that may be used without the
|
|
|
458 intervention of any file handler.
|
|
|
459 If FILENAME is a directly usable file itself, return
|
|
|
460 \(file-name-directory FILENAME).
|
|
|
461 The `call-process' and `start-process' functions use this function to
|
|
|
462 get a current directory to run processes in.
|
|
|
463 */
|
|
444
|
464 (filename))
|
|
428
|
465 {
|
|
442
|
466 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
467 Lisp_Object handler;
|
|
|
468
|
|
|
469 /* If the file name has special constructs in it,
|
|
|
470 call the corresponding file handler. */
|
|
|
471 handler = Ffind_file_name_handler (filename, Qunhandled_file_name_directory);
|
|
|
472 if (!NILP (handler))
|
|
|
473 return call2 (handler, Qunhandled_file_name_directory,
|
|
|
474 filename);
|
|
|
475
|
|
|
476 return Ffile_name_directory (filename);
|
|
|
477 }
|
|
|
478
|
|
|
479
|
|
|
480 static char *
|
|
|
481 file_name_as_directory (char *out, char *in)
|
|
|
482 {
|
|
442
|
483 /* This function cannot GC */
|
|
428
|
484 int size = strlen (in);
|
|
|
485
|
|
|
486 if (size == 0)
|
|
|
487 {
|
|
|
488 out[0] = '.';
|
|
|
489 out[1] = DIRECTORY_SEP;
|
|
|
490 out[2] = '\0';
|
|
|
491 }
|
|
|
492 else
|
|
|
493 {
|
|
|
494 strcpy (out, in);
|
|
|
495 /* Append a slash if necessary */
|
|
|
496 if (!IS_ANY_SEP (out[size-1]))
|
|
|
497 {
|
|
|
498 out[size] = DIRECTORY_SEP;
|
|
|
499 out[size + 1] = '\0';
|
|
|
500 }
|
|
|
501 }
|
|
|
502 return out;
|
|
|
503 }
|
|
|
504
|
|
|
505 DEFUN ("file-name-as-directory", Ffile_name_as_directory, 1, 1, 0, /*
|
|
|
506 Return a string representing file FILENAME interpreted as a directory.
|
|
|
507 This operation exists because a directory is also a file, but its name as
|
|
|
508 a directory is different from its name as a file.
|
|
|
509 The result can be used as the value of `default-directory'
|
|
|
510 or passed as second argument to `expand-file-name'.
|
|
|
511 For a Unix-syntax file name, just appends a slash,
|
|
|
512 except for (file-name-as-directory \"\") => \"./\".
|
|
|
513 */
|
|
444
|
514 (filename))
|
|
428
|
515 {
|
|
442
|
516 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
517 char *buf;
|
|
|
518 Lisp_Object handler;
|
|
|
519
|
|
444
|
520 CHECK_STRING (filename);
|
|
428
|
521
|
|
|
522 /* If the file name has special constructs in it,
|
|
|
523 call the corresponding file handler. */
|
|
444
|
524 handler = Ffind_file_name_handler (filename, Qfile_name_as_directory);
|
|
428
|
525 if (!NILP (handler))
|
|
444
|
526 return call2_check_string (handler, Qfile_name_as_directory, filename);
|
|
|
527
|
|
|
528 buf = (char *) alloca (XSTRING_LENGTH (filename) + 10);
|
|
428
|
529 return build_string (file_name_as_directory
|
|
444
|
530 (buf, (char *) XSTRING_DATA (filename)));
|
|
428
|
531 }
|
|
|
532
|
|
|
533 /*
|
|
|
534 * Convert from directory name to filename.
|
|
|
535 * On UNIX, it's simple: just make sure there isn't a terminating /
|
|
|
536 *
|
|
|
537 * Value is nonzero if the string output is different from the input.
|
|
|
538 */
|
|
|
539
|
|
|
540 static int
|
|
442
|
541 directory_file_name (const char *src, char *dst)
|
|
428
|
542 {
|
|
442
|
543 /* This function cannot GC */
|
|
440
|
544 long slen = strlen (src);
|
|
428
|
545 /* Process as Unix format: just remove any final slash.
|
|
|
546 But leave "/" unchanged; do not change it to "". */
|
|
|
547 strcpy (dst, src);
|
|
|
548 if (slen > 1
|
|
|
549 && IS_DIRECTORY_SEP (dst[slen - 1])
|
|
657
|
550 #ifdef WIN32_FILENAMES
|
|
428
|
551 && !IS_ANY_SEP (dst[slen - 2])
|
|
657
|
552 #endif /* WIN32_FILENAMES */
|
|
428
|
553 )
|
|
|
554 dst[slen - 1] = 0;
|
|
|
555 return 1;
|
|
|
556 }
|
|
|
557
|
|
|
558 DEFUN ("directory-file-name", Fdirectory_file_name, 1, 1, 0, /*
|
|
444
|
559 Return the file name of the directory named DIRECTORY.
|
|
|
560 This is the name of the file that holds the data for the directory.
|
|
428
|
561 This operation exists because a directory is also a file, but its name as
|
|
|
562 a directory is different from its name as a file.
|
|
|
563 In Unix-syntax, this function just removes the final slash.
|
|
|
564 */
|
|
|
565 (directory))
|
|
|
566 {
|
|
442
|
567 /* This function can GC. GC checked 2000-07-28 ben */
|
|
428
|
568 char *buf;
|
|
|
569 Lisp_Object handler;
|
|
|
570
|
|
|
571 CHECK_STRING (directory);
|
|
|
572
|
|
|
573 #if 0 /* #### WTF? */
|
|
|
574 if (NILP (directory))
|
|
|
575 return Qnil;
|
|
|
576 #endif
|
|
|
577
|
|
|
578 /* If the file name has special constructs in it,
|
|
|
579 call the corresponding file handler. */
|
|
|
580 handler = Ffind_file_name_handler (directory, Qdirectory_file_name);
|
|
|
581 if (!NILP (handler))
|
|
|
582 return call2_check_string (handler, Qdirectory_file_name, directory);
|
|
|
583 buf = (char *) alloca (XSTRING_LENGTH (directory) + 20);
|
|
|
584 directory_file_name ((char *) XSTRING_DATA (directory), buf);
|
|
|
585 return build_string (buf);
|
|
|
586 }
|
|
|
587
|
|
|
588 /* Fmake_temp_name used to be a simple wrapper around mktemp(), but it
|
|
|
589 proved too broken for our purposes (it supported only 26 or 62
|
|
|
590 unique names under some implementations). For example, this
|
|
|
591 arbitrary limit broke generation of Gnus Incoming* files.
|
|
|
592
|
|
|
593 This implementation is better than what one usually finds in libc.
|
|
|
594 --hniksic */
|
|
|
595
|
|
442
|
596 static unsigned int temp_name_rand;
|
|
|
597
|
|
428
|
598 DEFUN ("make-temp-name", Fmake_temp_name, 1, 1, 0, /*
|
|
442
|
599 Generate a temporary file name starting with PREFIX.
|
|
428
|
600 The Emacs process number forms part of the result, so there is no
|
|
|
601 danger of generating a name being used by another process.
|
|
|
602
|
|
|
603 In addition, this function makes an attempt to choose a name that
|
|
|
604 does not specify an existing file. To make this work, PREFIX should
|
|
|
605 be an absolute file name.
|
|
|
606 */
|
|
|
607 (prefix))
|
|
|
608 {
|
|
442
|
609 static const char tbl[64] =
|
|
|
610 {
|
|
428
|
611 'A','B','C','D','E','F','G','H',
|
|
|
612 'I','J','K','L','M','N','O','P',
|
|
|
613 'Q','R','S','T','U','V','W','X',
|
|
|
614 'Y','Z','a','b','c','d','e','f',
|
|
|
615 'g','h','i','j','k','l','m','n',
|
|
|
616 'o','p','q','r','s','t','u','v',
|
|
|
617 'w','x','y','z','0','1','2','3',
|
|
442
|
618 '4','5','6','7','8','9','-','_'
|
|
|
619 };
|
|
428
|
620
|
|
|
621 Lisp_Object val;
|
|
|
622 Bytecount len;
|
|
|
623 Bufbyte *p, *data;
|
|
|
624
|
|
|
625 CHECK_STRING (prefix);
|
|
|
626
|
|
|
627 /* I was tempted to apply Fexpand_file_name on PREFIX here, but it's
|
|
|
628 a bad idea because:
|
|
|
629
|
|
|
630 1) It might change the prefix, so the resulting string might not
|
|
|
631 begin with PREFIX. This violates the principle of least
|
|
|
632 surprise.
|
|
|
633
|
|
|
634 2) It breaks under many unforeseeable circumstances, such as with
|
|
|
635 the code that uses (make-temp-name "") instead of
|
|
|
636 (make-temp-name "./").
|
|
|
637
|
|
|
638 3) It might yield unexpected (to stat(2)) results in the presence
|
|
|
639 of EFS and file name handlers. */
|
|
|
640
|
|
|
641 len = XSTRING_LENGTH (prefix);
|
|
|
642 val = make_uninit_string (len + 6);
|
|
|
643 data = XSTRING_DATA (val);
|
|
|
644 memcpy (data, XSTRING_DATA (prefix), len);
|
|
|
645 p = data + len;
|
|
|
646
|
|
|
647 /* VAL is created by adding 6 characters to PREFIX. The first three
|
|
|
648 are the PID of this process, in base 64, and the second three are
|
|
442
|
649 a pseudo-random number seeded from process startup time. This
|
|
|
650 ensures 262144 unique file names per PID per PREFIX per machine. */
|
|
|
651
|
|
|
652 {
|
|
|
653 unsigned int pid = (unsigned int) getpid ();
|
|
|
654 *p++ = tbl[(pid >> 0) & 63];
|
|
|
655 *p++ = tbl[(pid >> 6) & 63];
|
|
|
656 *p++ = tbl[(pid >> 12) & 63];
|
|
|
657 }
|
|
428
|
658
|
|
|
659 /* Here we try to minimize useless stat'ing when this function is
|
|
|
660 invoked many times successively with the same PREFIX. We achieve
|
|
442
|
661 this by using a very pseudo-random number generator to generate
|
|
|
662 file names unique to this process, with a very long cycle. */
|
|
428
|
663
|
|
|
664 while (1)
|
|
|
665 {
|
|
|
666 struct stat ignored;
|
|
442
|
667
|
|
|
668 p[0] = tbl[(temp_name_rand >> 0) & 63];
|
|
|
669 p[1] = tbl[(temp_name_rand >> 6) & 63];
|
|
|
670 p[2] = tbl[(temp_name_rand >> 12) & 63];
|
|
428
|
671
|
|
|
672 /* Poor man's congruential RN generator. Replace with ++count
|
|
|
673 for debugging. */
|
|
442
|
674 temp_name_rand += 25229;
|
|
|
675 temp_name_rand %= 225307;
|
|
428
|
676
|
|
|
677 QUIT;
|
|
|
678
|
|
442
|
679 if (xemacs_stat ((const char *) data, &ignored) < 0)
|
|
428
|
680 {
|
|
|
681 /* We want to return only if errno is ENOENT. */
|
|
|
682 if (errno == ENOENT)
|
|
|
683 return val;
|
|
|
684
|
|
|
685 /* The error here is dubious, but there is little else we
|
|
|
686 can do. The alternatives are to return nil, which is
|
|
|
687 as bad as (and in many cases worse than) throwing the
|
|
|
688 error, or to ignore the error, which will likely result
|
|
|
689 in inflooping. */
|
|
|
690 report_file_error ("Cannot create temporary name for prefix",
|
|
563
|
691 prefix);
|
|
428
|
692 return Qnil; /* not reached */
|
|
|
693 }
|
|
|
694 }
|
|
|
695 }
|
|
|
696
|
|
|
697
|
|
|
698 DEFUN ("expand-file-name", Fexpand_file_name, 1, 2, 0, /*
|
|
|
699 Convert filename NAME to absolute, and canonicalize it.
|
|
|
700 Second arg DEFAULT-DIRECTORY is directory to start with if NAME is relative
|
|
|
701 (does not start with slash); if DEFAULT-DIRECTORY is nil or missing,
|
|
444
|
702 the current buffer's value of `default-directory' is used.
|
|
428
|
703 File name components that are `.' are removed, and
|
|
|
704 so are file name components followed by `..', along with the `..' itself;
|
|
|
705 note that these simplifications are done without checking the resulting
|
|
|
706 file names in the file system.
|
|
|
707 An initial `~/' expands to your home directory.
|
|
|
708 An initial `~USER/' expands to USER's home directory.
|
|
|
709 See also the function `substitute-in-file-name'.
|
|
|
710 */
|
|
|
711 (name, default_directory))
|
|
|
712 {
|
|
446
|
713 /* This function can GC. GC-checked 2000-11-18 */
|
|
428
|
714 Bufbyte *nm;
|
|
|
715
|
|
|
716 Bufbyte *newdir, *p, *o;
|
|
|
717 int tlen;
|
|
|
718 Bufbyte *target;
|
|
657
|
719 #ifdef WIN32_FILENAMES
|
|
428
|
720 int drive = 0;
|
|
|
721 int collapse_newdir = 1;
|
|
657
|
722 #endif
|
|
|
723 #ifndef WIN32_NATIVE
|
|
428
|
724 struct passwd *pw;
|
|
657
|
725 #endif /* WIN32_FILENAMES */
|
|
428
|
726 int length;
|
|
446
|
727 Lisp_Object handler = Qnil;
|
|
442
|
728 #ifdef CYGWIN
|
|
428
|
729 char *user;
|
|
|
730 #endif
|
|
446
|
731 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
442
|
732
|
|
|
733 /* both of these get set below */
|
|
446
|
734 GCPRO3 (name, default_directory, handler);
|
|
428
|
735
|
|
|
736 CHECK_STRING (name);
|
|
|
737
|
|
|
738 /* If the file name has special constructs in it,
|
|
|
739 call the corresponding file handler. */
|
|
|
740 handler = Ffind_file_name_handler (name, Qexpand_file_name);
|
|
|
741 if (!NILP (handler))
|
|
446
|
742 RETURN_UNGCPRO (call3_check_string (handler, Qexpand_file_name,
|
|
|
743 name, default_directory));
|
|
428
|
744
|
|
|
745 /* Use the buffer's default-directory if DEFAULT_DIRECTORY is omitted. */
|
|
|
746 if (NILP (default_directory))
|
|
|
747 default_directory = current_buffer->directory;
|
|
|
748 if (! STRINGP (default_directory))
|
|
|
749 default_directory = build_string ("/");
|
|
|
750
|
|
|
751 if (!NILP (default_directory))
|
|
|
752 {
|
|
|
753 handler = Ffind_file_name_handler (default_directory, Qexpand_file_name);
|
|
|
754 if (!NILP (handler))
|
|
446
|
755 RETURN_UNGCPRO (call3 (handler, Qexpand_file_name,
|
|
|
756 name, default_directory));
|
|
428
|
757 }
|
|
|
758
|
|
|
759 o = XSTRING_DATA (default_directory);
|
|
|
760
|
|
|
761 /* Make sure DEFAULT_DIRECTORY is properly expanded.
|
|
|
762 It would be better to do this down below where we actually use
|
|
|
763 default_directory. Unfortunately, calling Fexpand_file_name recursively
|
|
|
764 could invoke GC, and the strings might be relocated. This would
|
|
|
765 be annoying because we have pointers into strings lying around
|
|
|
766 that would need adjusting, and people would add new pointers to
|
|
|
767 the code and forget to adjust them, resulting in intermittent bugs.
|
|
|
768 Putting this call here avoids all that crud.
|
|
|
769
|
|
|
770 The EQ test avoids infinite recursion. */
|
|
|
771 if (! NILP (default_directory) && !EQ (default_directory, name)
|
|
|
772 /* Save time in some common cases - as long as default_directory
|
|
|
773 is not relative, it can be canonicalized with name below (if it
|
|
|
774 is needed at all) without requiring it to be expanded now. */
|
|
657
|
775 #ifdef WIN32_FILENAMES
|
|
442
|
776 /* Detect Windows file names with drive specifiers. */
|
|
428
|
777 && ! (IS_DRIVE (o[0]) && (IS_DEVICE_SEP (o[1]) && IS_DIRECTORY_SEP (o[2])))
|
|
|
778 /* Detect Windows file names in UNC format. */
|
|
|
779 && ! (IS_DIRECTORY_SEP (o[0]) && IS_DIRECTORY_SEP (o[1]))
|
|
657
|
780 #endif /* not WIN32_FILENAMES */
|
|
|
781 #ifndef WIN32_NATIVE
|
|
428
|
782 /* Detect Unix absolute file names (/... alone is not absolute on
|
|
442
|
783 Windows). */
|
|
428
|
784 && ! (IS_DIRECTORY_SEP (o[0]))
|
|
442
|
785 #endif /* not WIN32_NATIVE */
|
|
428
|
786 )
|
|
442
|
787
|
|
|
788 default_directory = Fexpand_file_name (default_directory, Qnil);
|
|
428
|
789
|
|
|
790 #ifdef FILE_SYSTEM_CASE
|
|
|
791 name = FILE_SYSTEM_CASE (name);
|
|
|
792 #endif
|
|
|
793
|
|
|
794 /* #### dmoore - this is ugly, clean this up. Looks like nm pointing
|
|
|
795 into name should be safe during all of this, though. */
|
|
|
796 nm = XSTRING_DATA (name);
|
|
|
797
|
|
657
|
798 #ifdef WIN32_FILENAMES
|
|
428
|
799 /* We will force directory separators to be either all \ or /, so make
|
|
|
800 a local copy to modify, even if there ends up being no change. */
|
|
442
|
801 nm = strcpy ((char *)alloca (strlen ((char *)nm) + 1), (char *)nm);
|
|
428
|
802
|
|
|
803 /* Find and remove drive specifier if present; this makes nm absolute
|
|
|
804 even if the rest of the name appears to be relative. */
|
|
|
805 {
|
|
442
|
806 Bufbyte *colon = (Bufbyte *) strrchr ((char *)nm, ':');
|
|
428
|
807
|
|
|
808 if (colon)
|
|
657
|
809 {
|
|
428
|
810 /* Only recognize colon as part of drive specifier if there is a
|
|
|
811 single alphabetic character preceding the colon (and if the
|
|
|
812 character before the drive letter, if present, is a directory
|
|
|
813 separator); this is to support the remote system syntax used by
|
|
|
814 ange-ftp, and the "po:username" syntax for POP mailboxes. */
|
|
|
815 look_again:
|
|
|
816 if (nm == colon)
|
|
|
817 nm++;
|
|
|
818 else if (IS_DRIVE (colon[-1])
|
|
|
819 && (colon == nm + 1 || IS_DIRECTORY_SEP (colon[-2])))
|
|
|
820 {
|
|
|
821 drive = colon[-1];
|
|
|
822 nm = colon + 1;
|
|
|
823 }
|
|
|
824 else
|
|
|
825 {
|
|
|
826 while (--colon >= nm)
|
|
|
827 if (colon[0] == ':')
|
|
|
828 goto look_again;
|
|
|
829 }
|
|
657
|
830 }
|
|
428
|
831 }
|
|
|
832
|
|
|
833 /* If we see "c://somedir", we want to strip the first slash after the
|
|
|
834 colon when stripping the drive letter. Otherwise, this expands to
|
|
|
835 "//somedir". */
|
|
|
836 if (drive && IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
837 nm++;
|
|
657
|
838 #endif /* WIN32_FILENAMES */
|
|
428
|
839
|
|
|
840 /* If nm is absolute, look for /./ or /../ sequences; if none are
|
|
|
841 found, we can probably return right away. We will avoid allocating
|
|
|
842 a new string if name is already fully expanded. */
|
|
|
843 if (
|
|
|
844 IS_DIRECTORY_SEP (nm[0])
|
|
442
|
845 #ifdef WIN32_NATIVE
|
|
428
|
846 && (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
|
847 #endif
|
|
|
848 )
|
|
|
849 {
|
|
|
850 /* If it turns out that the filename we want to return is just a
|
|
|
851 suffix of FILENAME, we don't need to go through and edit
|
|
|
852 things; we just need to construct a new string using data
|
|
|
853 starting at the middle of FILENAME. If we set lose to a
|
|
|
854 non-zero value, that means we've discovered that we can't do
|
|
|
855 that cool trick. */
|
|
|
856 int lose = 0;
|
|
|
857
|
|
|
858 p = nm;
|
|
|
859 while (*p)
|
|
|
860 {
|
|
|
861 /* Since we know the name is absolute, we can assume that each
|
|
|
862 element starts with a "/". */
|
|
|
863
|
|
|
864 /* "." and ".." are hairy. */
|
|
|
865 if (IS_DIRECTORY_SEP (p[0])
|
|
|
866 && p[1] == '.'
|
|
|
867 && (IS_DIRECTORY_SEP (p[2])
|
|
|
868 || p[2] == 0
|
|
|
869 || (p[2] == '.' && (IS_DIRECTORY_SEP (p[3])
|
|
|
870 || p[3] == 0))))
|
|
|
871 lose = 1;
|
|
|
872 p++;
|
|
|
873 }
|
|
|
874 if (!lose)
|
|
|
875 {
|
|
657
|
876 #ifdef WIN32_FILENAMES
|
|
|
877 if (drive || IS_DIRECTORY_SEP (nm[1]))
|
|
428
|
878 {
|
|
657
|
879 /* Make sure directories are all separated with / or \ as
|
|
|
880 desired, but avoid allocation of a new string when not
|
|
|
881 required. */
|
|
|
882 CORRECT_DIR_SEPS (nm);
|
|
|
883 if (IS_DIRECTORY_SEP (nm[1]))
|
|
|
884 {
|
|
|
885 if (strcmp (nm, XSTRING_DATA (name)) != 0)
|
|
|
886 name = build_string (nm);
|
|
|
887 }
|
|
|
888 /* drive must be set, so this is okay */
|
|
|
889 else if (strcmp (nm - 2, XSTRING_DATA (name)) != 0)
|
|
|
890 {
|
|
|
891 name = make_string (nm - 2, p - nm + 2);
|
|
|
892 XSTRING_DATA (name)[0] = DRIVE_LETTER (drive);
|
|
|
893 XSTRING_DATA (name)[1] = ':';
|
|
|
894 }
|
|
|
895 RETURN_UNGCPRO (name);
|
|
428
|
896 }
|
|
657
|
897 #endif /* not WIN32_FILENAMES */
|
|
|
898 #ifndef WIN32_NATIVE
|
|
428
|
899 if (nm == XSTRING_DATA (name))
|
|
442
|
900 RETURN_UNGCPRO (name);
|
|
|
901 RETURN_UNGCPRO (build_string ((char *) nm));
|
|
|
902 #endif /* not WIN32_NATIVE */
|
|
428
|
903 }
|
|
|
904 }
|
|
|
905
|
|
|
906 /* At this point, nm might or might not be an absolute file name. We
|
|
|
907 need to expand ~ or ~user if present, otherwise prefix nm with
|
|
|
908 default_directory if nm is not absolute, and finally collapse /./
|
|
|
909 and /foo/../ sequences.
|
|
|
910
|
|
|
911 We set newdir to be the appropriate prefix if one is needed:
|
|
|
912 - the relevant user directory if nm starts with ~ or ~user
|
|
|
913 - the specified drive's working dir (DOS/NT only) if nm does not
|
|
|
914 start with /
|
|
|
915 - the value of default_directory.
|
|
|
916
|
|
|
917 Note that these prefixes are not guaranteed to be absolute (except
|
|
|
918 for the working dir of a drive). Therefore, to ensure we always
|
|
|
919 return an absolute name, if the final prefix is not absolute we
|
|
|
920 append it to the current working directory. */
|
|
|
921
|
|
|
922 newdir = 0;
|
|
|
923
|
|
|
924 if (nm[0] == '~') /* prefix ~ */
|
|
|
925 {
|
|
|
926 if (IS_DIRECTORY_SEP (nm[1])
|
|
|
927 || nm[1] == 0) /* ~ by itself */
|
|
|
928 {
|
|
440
|
929 Extbyte *newdir_external = get_home_directory ();
|
|
428
|
930
|
|
|
931 if (newdir_external == NULL)
|
|
|
932 newdir = (Bufbyte *) "";
|
|
|
933 else
|
|
440
|
934 TO_INTERNAL_FORMAT (C_STRING, newdir_external,
|
|
|
935 C_STRING_ALLOCA, (* ((char **) &newdir)),
|
|
|
936 Qfile_name);
|
|
428
|
937
|
|
|
938 nm++;
|
|
657
|
939 #ifdef WIN32_FILENAMES
|
|
428
|
940 collapse_newdir = 0;
|
|
|
941 #endif
|
|
|
942 }
|
|
|
943 else /* ~user/filename */
|
|
|
944 {
|
|
|
945 for (p = nm; *p && (!IS_DIRECTORY_SEP (*p)); p++)
|
|
|
946 DO_NOTHING;
|
|
|
947 o = (Bufbyte *) alloca (p - nm + 1);
|
|
|
948 memcpy (o, (char *) nm, p - nm);
|
|
|
949 o [p - nm] = 0;
|
|
|
950
|
|
558
|
951 /* #### While NT is single-user (for the moment) you still
|
|
|
952 can have multiple user profiles users defined, each with
|
|
|
953 its HOME. So maybe possibly we should think about handling
|
|
|
954 ~user. --ben */
|
|
|
955 #ifndef WIN32_NATIVE
|
|
442
|
956 #ifdef CYGWIN
|
|
428
|
957 if ((user = user_login_name (NULL)) != NULL)
|
|
|
958 {
|
|
|
959 /* Does the user login name match the ~name? */
|
|
|
960 if (strcmp (user, (char *) o + 1) == 0)
|
|
|
961 {
|
|
|
962 newdir = (Bufbyte *) get_home_directory();
|
|
|
963 nm = p;
|
|
|
964 }
|
|
|
965 }
|
|
|
966 if (! newdir)
|
|
|
967 {
|
|
442
|
968 #endif /* CYGWIN */
|
|
428
|
969 /* Jamie reports that getpwnam() can get wedged by SIGIO/SIGALARM
|
|
|
970 occurring in it. (It can call select()). */
|
|
|
971 slow_down_interrupts ();
|
|
|
972 pw = (struct passwd *) getpwnam ((char *) o + 1);
|
|
|
973 speed_up_interrupts ();
|
|
|
974 if (pw)
|
|
|
975 {
|
|
|
976 newdir = (Bufbyte *) pw -> pw_dir;
|
|
|
977 nm = p;
|
|
|
978 }
|
|
442
|
979 #ifdef CYGWIN
|
|
428
|
980 }
|
|
|
981 #endif
|
|
442
|
982 #endif /* not WIN32_NATIVE */
|
|
428
|
983
|
|
|
984 /* If we don't find a user of that name, leave the name
|
|
|
985 unchanged; don't move nm forward to p. */
|
|
|
986 }
|
|
|
987 }
|
|
|
988
|
|
657
|
989 #ifdef WIN32_FILENAMES
|
|
428
|
990 /* On DOS and Windows, nm is absolute if a drive name was specified;
|
|
|
991 use the drive's current directory as the prefix if needed. */
|
|
|
992 if (!newdir && drive)
|
|
|
993 {
|
|
657
|
994 #ifdef WIN32_NATIVE
|
|
428
|
995 /* Get default directory if needed to make nm absolute. */
|
|
|
996 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
997 {
|
|
|
998 newdir = alloca (MAXPATHLEN + 1);
|
|
442
|
999 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
428
|
1000 newdir = NULL;
|
|
|
1001 }
|
|
657
|
1002 #endif /* WIN32_NATIVE */
|
|
428
|
1003 if (!newdir)
|
|
|
1004 {
|
|
|
1005 /* Either nm starts with /, or drive isn't mounted. */
|
|
|
1006 newdir = alloca (4);
|
|
|
1007 newdir[0] = DRIVE_LETTER (drive);
|
|
|
1008 newdir[1] = ':';
|
|
|
1009 newdir[2] = '/';
|
|
|
1010 newdir[3] = 0;
|
|
|
1011 }
|
|
|
1012 }
|
|
657
|
1013 #endif /* WIN32_FILENAMES */
|
|
428
|
1014
|
|
|
1015 /* Finally, if no prefix has been specified and nm is not absolute,
|
|
|
1016 then it must be expanded relative to default_directory. */
|
|
|
1017
|
|
|
1018 if (1
|
|
442
|
1019 #ifndef WIN32_NATIVE
|
|
428
|
1020 /* /... alone is not absolute on DOS and Windows. */
|
|
|
1021 && !IS_DIRECTORY_SEP (nm[0])
|
|
657
|
1022 #endif
|
|
|
1023 #ifdef WIN32_FILENAMES
|
|
428
|
1024 && !(IS_DIRECTORY_SEP (nm[0]) && IS_DIRECTORY_SEP (nm[1]))
|
|
|
1025 #endif
|
|
|
1026 && !newdir)
|
|
|
1027 {
|
|
|
1028 newdir = XSTRING_DATA (default_directory);
|
|
|
1029 }
|
|
|
1030
|
|
657
|
1031 #ifdef WIN32_FILENAMES
|
|
428
|
1032 if (newdir)
|
|
|
1033 {
|
|
|
1034 /* First ensure newdir is an absolute name. */
|
|
|
1035 if (
|
|
442
|
1036 /* Detect Windows file names with drive specifiers. */
|
|
428
|
1037 ! (IS_DRIVE (newdir[0])
|
|
|
1038 && IS_DEVICE_SEP (newdir[1]) && IS_DIRECTORY_SEP (newdir[2]))
|
|
|
1039 /* Detect Windows file names in UNC format. */
|
|
|
1040 && ! (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1041 /* Detect drive spec by itself */
|
|
|
1042 && ! (IS_DEVICE_SEP (newdir[1]) && newdir[2] == 0)
|
|
657
|
1043 /* Detect unix format. */
|
|
|
1044 #ifndef WIN32_NATIVE
|
|
|
1045 && ! (IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1046 #endif
|
|
428
|
1047 )
|
|
|
1048 {
|
|
|
1049 /* Effectively, let newdir be (expand-file-name newdir cwd).
|
|
|
1050 Because of the admonition against calling expand-file-name
|
|
|
1051 when we have pointers into lisp strings, we accomplish this
|
|
|
1052 indirectly by prepending newdir to nm if necessary, and using
|
|
|
1053 cwd (or the wd of newdir's drive) as the new newdir. */
|
|
|
1054
|
|
|
1055 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1056 {
|
|
|
1057 drive = newdir[0];
|
|
|
1058 newdir += 2;
|
|
|
1059 }
|
|
|
1060 if (!IS_DIRECTORY_SEP (nm[0]))
|
|
|
1061 {
|
|
|
1062 char * tmp = alloca (strlen (newdir) + strlen (nm) + 2);
|
|
|
1063 file_name_as_directory (tmp, newdir);
|
|
|
1064 strcat (tmp, nm);
|
|
|
1065 nm = tmp;
|
|
|
1066 }
|
|
|
1067 newdir = alloca (MAXPATHLEN + 1);
|
|
|
1068 if (drive)
|
|
|
1069 {
|
|
657
|
1070 #ifdef WIN32_NATIVE
|
|
442
|
1071 if (!_getdcwd (toupper (drive) - 'A' + 1, newdir, MAXPATHLEN))
|
|
657
|
1072 #endif
|
|
428
|
1073 newdir = "/";
|
|
|
1074 }
|
|
|
1075 else
|
|
|
1076 getwd (newdir);
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 /* Strip off drive name from prefix, if present. */
|
|
|
1080 if (IS_DRIVE (newdir[0]) && newdir[1] == ':')
|
|
|
1081 {
|
|
|
1082 drive = newdir[0];
|
|
|
1083 newdir += 2;
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 /* Keep only a prefix from newdir if nm starts with slash
|
|
|
1087 (/ /server/share for UNC, nothing otherwise). */
|
|
657
|
1088 if (IS_DIRECTORY_SEP (nm[0])
|
|
|
1089 #ifndef WIN32_NATIVE
|
|
|
1090 && IS_DIRECTORY_SEP (nm[1])
|
|
|
1091 #endif
|
|
|
1092 && collapse_newdir)
|
|
428
|
1093 {
|
|
|
1094 if (IS_DIRECTORY_SEP (newdir[0]) && IS_DIRECTORY_SEP (newdir[1]))
|
|
|
1095 {
|
|
|
1096 newdir = strcpy (alloca (strlen (newdir) + 1), newdir);
|
|
|
1097 p = newdir + 2;
|
|
|
1098 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1099 p++;
|
|
|
1100 while (*p && !IS_DIRECTORY_SEP (*p)) p++;
|
|
|
1101 *p = 0;
|
|
|
1102 }
|
|
|
1103 else
|
|
|
1104 newdir = "";
|
|
|
1105 }
|
|
|
1106 }
|
|
657
|
1107 #endif /* WIN32_FILENAMES */
|
|
428
|
1108
|
|
|
1109 if (newdir)
|
|
|
1110 {
|
|
|
1111 /* Get rid of any slash at the end of newdir, unless newdir is
|
|
|
1112 just // (an incomplete UNC name). */
|
|
|
1113 length = strlen ((char *) newdir);
|
|
|
1114 if (length > 1 && IS_DIRECTORY_SEP (newdir[length - 1])
|
|
657
|
1115 #ifdef WIN32_FILENAMES
|
|
428
|
1116 && !(length == 2 && IS_DIRECTORY_SEP (newdir[0]))
|
|
|
1117 #endif
|
|
|
1118 )
|
|
|
1119 {
|
|
|
1120 Bufbyte *temp = (Bufbyte *) alloca (length);
|
|
|
1121 memcpy (temp, newdir, length - 1);
|
|
|
1122 temp[length - 1] = 0;
|
|
|
1123 newdir = temp;
|
|
|
1124 }
|
|
|
1125 tlen = length + 1;
|
|
|
1126 }
|
|
|
1127 else
|
|
|
1128 tlen = 0;
|
|
|
1129
|
|
|
1130 /* Now concatenate the directory and name to new space in the stack frame */
|
|
|
1131 tlen += strlen ((char *) nm) + 1;
|
|
657
|
1132 #ifdef WIN32_FILENAMES
|
|
428
|
1133 /* Add reserved space for drive name. (The Microsoft x86 compiler
|
|
|
1134 produces incorrect code if the following two lines are combined.) */
|
|
|
1135 target = (Bufbyte *) alloca (tlen + 2);
|
|
|
1136 target += 2;
|
|
657
|
1137 #else /* not WIN32_FILENAMES */
|
|
428
|
1138 target = (Bufbyte *) alloca (tlen);
|
|
657
|
1139 #endif /* not WIN32_FILENAMES */
|
|
428
|
1140 *target = 0;
|
|
|
1141
|
|
|
1142 if (newdir)
|
|
|
1143 {
|
|
|
1144 if (nm[0] == 0 || IS_DIRECTORY_SEP (nm[0]))
|
|
|
1145 strcpy ((char *) target, (char *) newdir);
|
|
|
1146 else
|
|
|
1147 file_name_as_directory ((char *) target, (char *) newdir);
|
|
|
1148 }
|
|
|
1149
|
|
|
1150 strcat ((char *) target, (char *) nm);
|
|
|
1151
|
|
|
1152 /* ASSERT (IS_DIRECTORY_SEP (target[0])) if not VMS */
|
|
|
1153
|
|
|
1154 /* Now canonicalize by removing /. and /foo/.. if they appear. */
|
|
|
1155
|
|
|
1156 p = target;
|
|
|
1157 o = target;
|
|
|
1158
|
|
|
1159 while (*p)
|
|
|
1160 {
|
|
|
1161 if (!IS_DIRECTORY_SEP (*p))
|
|
|
1162 {
|
|
|
1163 *o++ = *p++;
|
|
|
1164 }
|
|
|
1165 else if (IS_DIRECTORY_SEP (p[0])
|
|
|
1166 && p[1] == '.'
|
|
|
1167 && (IS_DIRECTORY_SEP (p[2])
|
|
|
1168 || p[2] == 0))
|
|
|
1169 {
|
|
|
1170 /* If "/." is the entire filename, keep the "/". Otherwise,
|
|
|
1171 just delete the whole "/.". */
|
|
|
1172 if (o == target && p[2] == '\0')
|
|
|
1173 *o++ = *p;
|
|
|
1174 p += 2;
|
|
|
1175 }
|
|
|
1176 else if (IS_DIRECTORY_SEP (p[0]) && p[1] == '.' && p[2] == '.'
|
|
|
1177 /* `/../' is the "superroot" on certain file systems. */
|
|
|
1178 && o != target
|
|
|
1179 && (IS_DIRECTORY_SEP (p[3]) || p[3] == 0))
|
|
|
1180 {
|
|
|
1181 while (o != target && (--o) && !IS_DIRECTORY_SEP (*o))
|
|
|
1182 ;
|
|
|
1183 /* Keep initial / only if this is the whole name. */
|
|
|
1184 if (o == target && IS_ANY_SEP (*o) && p[3] == 0)
|
|
|
1185 ++o;
|
|
|
1186 p += 3;
|
|
|
1187 }
|
|
657
|
1188 #ifdef WIN32_FILENAMES
|
|
428
|
1189 /* if drive is set, we're not dealing with an UNC, so
|
|
|
1190 multiple dir-seps are redundant (and reportedly cause trouble
|
|
|
1191 under win95) */
|
|
|
1192 else if (drive && IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1193 ++p;
|
|
|
1194 #endif
|
|
|
1195 else
|
|
|
1196 {
|
|
|
1197 *o++ = *p++;
|
|
|
1198 }
|
|
|
1199 }
|
|
|
1200
|
|
657
|
1201 #ifdef WIN32_FILENAMES
|
|
428
|
1202 /* At last, set drive name, except for network file name. */
|
|
|
1203 if (drive)
|
|
|
1204 {
|
|
|
1205 target -= 2;
|
|
|
1206 target[0] = DRIVE_LETTER (drive);
|
|
|
1207 target[1] = ':';
|
|
|
1208 }
|
|
657
|
1209 #ifdef WIN32_NATIVE
|
|
428
|
1210 else
|
|
|
1211 {
|
|
|
1212 assert (IS_DIRECTORY_SEP (target[0]) && IS_DIRECTORY_SEP (target[1]));
|
|
|
1213 }
|
|
657
|
1214 #endif
|
|
428
|
1215 CORRECT_DIR_SEPS (target);
|
|
657
|
1216 #endif /* WIN32_FILENAMES */
|
|
442
|
1217
|
|
|
1218 RETURN_UNGCPRO (make_string (target, o - target));
|
|
428
|
1219 }
|
|
|
1220
|
|
|
1221 DEFUN ("file-truename", Ffile_truename, 1, 2, 0, /*
|
|
444
|
1222 Return the canonical name of FILENAME.
|
|
|
1223 Second arg DEFAULT is directory to start with if FILENAME is relative
|
|
428
|
1224 (does not start with slash); if DEFAULT is nil or missing,
|
|
444
|
1225 the current buffer's value of `default-directory' is used.
|
|
428
|
1226 No component of the resulting pathname will be a symbolic link, as
|
|
|
1227 in the realpath() function.
|
|
|
1228 */
|
|
|
1229 (filename, default_))
|
|
|
1230 {
|
|
442
|
1231 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1232 Lisp_Object expanded_name;
|
|
|
1233 struct gcpro gcpro1;
|
|
|
1234
|
|
|
1235 CHECK_STRING (filename);
|
|
|
1236
|
|
|
1237 expanded_name = Fexpand_file_name (filename, default_);
|
|
|
1238
|
|
|
1239 if (!STRINGP (expanded_name))
|
|
|
1240 return Qnil;
|
|
|
1241
|
|
|
1242 GCPRO1 (expanded_name);
|
|
442
|
1243
|
|
|
1244 {
|
|
|
1245 Lisp_Object handler =
|
|
|
1246 Ffind_file_name_handler (expanded_name, Qfile_truename);
|
|
|
1247
|
|
|
1248 if (!NILP (handler))
|
|
|
1249 RETURN_UNGCPRO
|
|
|
1250 (call2_check_string (handler, Qfile_truename, expanded_name));
|
|
|
1251 }
|
|
428
|
1252
|
|
|
1253 {
|
|
|
1254 char resolved_path[MAXPATHLEN];
|
|
|
1255 Extbyte *path;
|
|
|
1256 Extbyte *p;
|
|
440
|
1257 Extcount elen;
|
|
|
1258
|
|
|
1259 TO_EXTERNAL_FORMAT (LISP_STRING, expanded_name,
|
|
|
1260 ALLOCA, (path, elen),
|
|
|
1261 Qfile_name);
|
|
428
|
1262 p = path;
|
|
|
1263 if (elen > MAXPATHLEN)
|
|
|
1264 goto toolong;
|
|
442
|
1265
|
|
428
|
1266 /* Try doing it all at once. */
|
|
|
1267 /* !! Does realpath() Mule-encapsulate?
|
|
|
1268 Answer: Nope! So we do it above */
|
|
|
1269 if (!xrealpath ((char *) path, resolved_path))
|
|
|
1270 {
|
|
|
1271 /* Didn't resolve it -- have to do it one component at a time. */
|
|
|
1272 /* "realpath" is a typically useless, stupid un*x piece of crap.
|
|
|
1273 It claims to return a useful value in the "error" case, but since
|
|
|
1274 there is no indication provided of how far along the pathname
|
|
|
1275 the function went before erring, there is no way to use the
|
|
442
|
1276 partial result returned. What a piece of junk.
|
|
|
1277
|
|
|
1278 The above comment refers to historical versions of
|
|
|
1279 realpath(). The Unix98 specs state:
|
|
|
1280
|
|
|
1281 "On successful completion, realpath() returns a
|
|
|
1282 pointer to the resolved name. Otherwise, realpath()
|
|
|
1283 returns a null pointer and sets errno to indicate the
|
|
|
1284 error, and the contents of the buffer pointed to by
|
|
|
1285 resolved_name are undefined."
|
|
|
1286
|
|
|
1287 Since we depend on undocumented semantics of various system realpath()s,
|
|
|
1288 we just use our own version in realpath.c. */
|
|
428
|
1289 for (;;)
|
|
|
1290 {
|
|
446
|
1291 Extbyte *pos;
|
|
|
1292
|
|
657
|
1293 #ifdef WIN32_FILENAMES
|
|
446
|
1294 if (IS_DRIVE (p[0]) && IS_DEVICE_SEP (p[1])
|
|
|
1295 && IS_DIRECTORY_SEP (p[2]))
|
|
|
1296 /* don't test c: on windows */
|
|
|
1297 p = p+2;
|
|
|
1298 else if (IS_DIRECTORY_SEP (p[0]) && IS_DIRECTORY_SEP (p[1]))
|
|
|
1299 /* start after // */
|
|
|
1300 p = p+1;
|
|
|
1301 #endif
|
|
|
1302 for (pos = p + 1; pos < path + elen; pos++)
|
|
|
1303 if (IS_DIRECTORY_SEP (*pos))
|
|
|
1304 {
|
|
|
1305 *(p = pos) = 0;
|
|
|
1306 break;
|
|
|
1307 }
|
|
|
1308 if (p != pos)
|
|
|
1309 p = 0;
|
|
428
|
1310
|
|
|
1311 if (xrealpath ((char *) path, resolved_path))
|
|
|
1312 {
|
|
|
1313 if (p)
|
|
446
|
1314 *p = DIRECTORY_SEP;
|
|
428
|
1315 else
|
|
|
1316 break;
|
|
|
1317
|
|
|
1318 }
|
|
|
1319 else if (errno == ENOENT || errno == EACCES)
|
|
|
1320 {
|
|
|
1321 /* Failed on this component. Just tack on the rest of
|
|
|
1322 the string and we are done. */
|
|
|
1323 int rlen = strlen (resolved_path);
|
|
|
1324
|
|
|
1325 /* "On failure, it returns NULL, sets errno to indicate
|
|
|
1326 the error, and places in resolved_path the absolute pathname
|
|
|
1327 of the path component which could not be resolved." */
|
|
442
|
1328
|
|
|
1329 if (p)
|
|
428
|
1330 {
|
|
|
1331 int plen = elen - (p - path);
|
|
|
1332
|
|
446
|
1333 if (rlen > 1 && IS_DIRECTORY_SEP (resolved_path[rlen - 1]))
|
|
428
|
1334 rlen = rlen - 1;
|
|
|
1335
|
|
|
1336 if (plen + rlen + 1 > countof (resolved_path))
|
|
|
1337 goto toolong;
|
|
|
1338
|
|
446
|
1339 resolved_path[rlen] = DIRECTORY_SEP;
|
|
428
|
1340 memcpy (resolved_path + rlen + 1, p + 1, plen + 1 - 1);
|
|
|
1341 }
|
|
|
1342 break;
|
|
|
1343 }
|
|
|
1344 else
|
|
|
1345 goto lose;
|
|
|
1346 }
|
|
|
1347 }
|
|
|
1348
|
|
|
1349 {
|
|
442
|
1350 Lisp_Object resolved_name;
|
|
428
|
1351 int rlen = strlen (resolved_path);
|
|
446
|
1352 if (elen > 0 && IS_DIRECTORY_SEP (XSTRING_BYTE (expanded_name, elen - 1))
|
|
|
1353 && !(rlen > 0 && IS_DIRECTORY_SEP (resolved_path[rlen - 1])))
|
|
428
|
1354 {
|
|
|
1355 if (rlen + 1 > countof (resolved_path))
|
|
|
1356 goto toolong;
|
|
446
|
1357 resolved_path[rlen++] = DIRECTORY_SEP;
|
|
442
|
1358 resolved_path[rlen] = '\0';
|
|
428
|
1359 }
|
|
442
|
1360 TO_INTERNAL_FORMAT (DATA, (resolved_path, rlen),
|
|
|
1361 LISP_STRING, resolved_name,
|
|
|
1362 Qfile_name);
|
|
|
1363 RETURN_UNGCPRO (resolved_name);
|
|
428
|
1364 }
|
|
|
1365
|
|
|
1366 toolong:
|
|
|
1367 errno = ENAMETOOLONG;
|
|
|
1368 goto lose;
|
|
|
1369 lose:
|
|
563
|
1370 report_file_error ("Finding truename", expanded_name);
|
|
428
|
1371 }
|
|
442
|
1372 RETURN_UNGCPRO (Qnil);
|
|
428
|
1373 }
|
|
|
1374
|
|
|
1375
|
|
|
1376 DEFUN ("substitute-in-file-name", Fsubstitute_in_file_name, 1, 1, 0, /*
|
|
|
1377 Substitute environment variables referred to in FILENAME.
|
|
|
1378 `$FOO' where FOO is an environment variable name means to substitute
|
|
|
1379 the value of that variable. The variable name should be terminated
|
|
444
|
1380 with a character, not a letter, digit or underscore; otherwise, enclose
|
|
428
|
1381 the entire variable name in braces.
|
|
|
1382 If `/~' appears, all of FILENAME through that `/' is discarded.
|
|
|
1383 */
|
|
444
|
1384 (filename))
|
|
428
|
1385 {
|
|
442
|
1386 /* This function can GC. GC checked 2000-07-28 ben. */
|
|
428
|
1387 Bufbyte *nm;
|
|
|
1388
|
|
|
1389 Bufbyte *s, *p, *o, *x, *endp;
|
|
|
1390 Bufbyte *target = 0;
|
|
|
1391 int total = 0;
|
|
|
1392 int substituted = 0;
|
|
|
1393 Bufbyte *xnm;
|
|
|
1394 Lisp_Object handler;
|
|
|
1395
|
|
444
|
1396 CHECK_STRING (filename);
|
|
428
|
1397
|
|
|
1398 /* If the file name has special constructs in it,
|
|
|
1399 call the corresponding file handler. */
|
|
444
|
1400 handler = Ffind_file_name_handler (filename, Qsubstitute_in_file_name);
|
|
428
|
1401 if (!NILP (handler))
|
|
|
1402 return call2_check_string_or_nil (handler, Qsubstitute_in_file_name,
|
|
444
|
1403 filename);
|
|
|
1404
|
|
|
1405 nm = XSTRING_DATA (filename);
|
|
|
1406 endp = nm + XSTRING_LENGTH (filename);
|
|
428
|
1407
|
|
|
1408 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1409
|
|
|
1410 for (p = nm; p != endp; p++)
|
|
|
1411 {
|
|
|
1412 if ((p[0] == '~'
|
|
657
|
1413 #if defined (WIN32_FILENAMES)
|
|
440
|
1414 /* // at start of file name is meaningful in WindowsNT systems */
|
|
428
|
1415 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != nm)
|
|
657
|
1416 #else /* not (WIN32_FILENAMES) */
|
|
428
|
1417 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1418 #endif /* not (WIN32_FILENAMES) */
|
|
428
|
1419 )
|
|
|
1420 && p != nm
|
|
|
1421 && (IS_DIRECTORY_SEP (p[-1])))
|
|
|
1422 {
|
|
|
1423 nm = p;
|
|
|
1424 substituted = 1;
|
|
|
1425 }
|
|
657
|
1426 #ifdef WIN32_FILENAMES
|
|
428
|
1427 /* see comment in expand-file-name about drive specifiers */
|
|
|
1428 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1429 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1430 {
|
|
|
1431 nm = p;
|
|
|
1432 substituted = 1;
|
|
|
1433 }
|
|
657
|
1434 #endif /* WIN32_FILENAMES */
|
|
428
|
1435 }
|
|
|
1436
|
|
|
1437 /* See if any variables are substituted into the string
|
|
|
1438 and find the total length of their values in `total' */
|
|
|
1439
|
|
|
1440 for (p = nm; p != endp;)
|
|
|
1441 if (*p != '$')
|
|
|
1442 p++;
|
|
|
1443 else
|
|
|
1444 {
|
|
|
1445 p++;
|
|
|
1446 if (p == endp)
|
|
|
1447 goto badsubst;
|
|
|
1448 else if (*p == '$')
|
|
|
1449 {
|
|
|
1450 /* "$$" means a single "$" */
|
|
|
1451 p++;
|
|
|
1452 total -= 1;
|
|
|
1453 substituted = 1;
|
|
|
1454 continue;
|
|
|
1455 }
|
|
|
1456 else if (*p == '{')
|
|
|
1457 {
|
|
|
1458 o = ++p;
|
|
|
1459 while (p != endp && *p != '}') p++;
|
|
|
1460 if (*p != '}') goto missingclose;
|
|
|
1461 s = p;
|
|
|
1462 }
|
|
|
1463 else
|
|
|
1464 {
|
|
|
1465 o = p;
|
|
|
1466 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1467 s = p;
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 /* Copy out the variable name */
|
|
|
1471 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1472 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1473 target[s - o] = 0;
|
|
442
|
1474 #ifdef WIN32_NATIVE
|
|
428
|
1475 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1476 #endif /* WIN32_NATIVE */
|
|
428
|
1477
|
|
|
1478 /* Get variable value */
|
|
|
1479 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1480 if (!o) goto badvar;
|
|
|
1481 total += strlen ((char *) o);
|
|
|
1482 substituted = 1;
|
|
|
1483 }
|
|
|
1484
|
|
|
1485 if (!substituted)
|
|
444
|
1486 return filename;
|
|
|
1487
|
|
|
1488 /* If substitution required, recopy the filename and do it */
|
|
428
|
1489 /* Make space in stack frame for the new copy */
|
|
444
|
1490 xnm = (Bufbyte *) alloca (XSTRING_LENGTH (filename) + total + 1);
|
|
428
|
1491 x = xnm;
|
|
|
1492
|
|
|
1493 /* Copy the rest of the name through, replacing $ constructs with values */
|
|
|
1494 for (p = nm; *p;)
|
|
|
1495 if (*p != '$')
|
|
|
1496 *x++ = *p++;
|
|
|
1497 else
|
|
|
1498 {
|
|
|
1499 p++;
|
|
|
1500 if (p == endp)
|
|
|
1501 goto badsubst;
|
|
|
1502 else if (*p == '$')
|
|
|
1503 {
|
|
|
1504 *x++ = *p++;
|
|
|
1505 continue;
|
|
|
1506 }
|
|
|
1507 else if (*p == '{')
|
|
|
1508 {
|
|
|
1509 o = ++p;
|
|
|
1510 while (p != endp && *p != '}') p++;
|
|
|
1511 if (*p != '}') goto missingclose;
|
|
|
1512 s = p++;
|
|
|
1513 }
|
|
|
1514 else
|
|
|
1515 {
|
|
|
1516 o = p;
|
|
|
1517 while (p != endp && (isalnum (*p) || *p == '_')) p++;
|
|
|
1518 s = p;
|
|
|
1519 }
|
|
|
1520
|
|
|
1521 /* Copy out the variable name */
|
|
|
1522 target = (Bufbyte *) alloca (s - o + 1);
|
|
|
1523 strncpy ((char *) target, (char *) o, s - o);
|
|
|
1524 target[s - o] = 0;
|
|
442
|
1525 #ifdef WIN32_NATIVE
|
|
428
|
1526 strupr (target); /* $home == $HOME etc. */
|
|
442
|
1527 #endif /* WIN32_NATIVE */
|
|
428
|
1528
|
|
|
1529 /* Get variable value */
|
|
|
1530 o = (Bufbyte *) egetenv ((char *) target);
|
|
|
1531 if (!o)
|
|
|
1532 goto badvar;
|
|
|
1533
|
|
|
1534 strcpy ((char *) x, (char *) o);
|
|
|
1535 x += strlen ((char *) o);
|
|
|
1536 }
|
|
|
1537
|
|
|
1538 *x = 0;
|
|
|
1539
|
|
|
1540 /* If /~ or // appears, discard everything through first slash. */
|
|
|
1541
|
|
|
1542 for (p = xnm; p != x; p++)
|
|
|
1543 if ((p[0] == '~'
|
|
657
|
1544 #if defined (WIN32_FILENAMES)
|
|
428
|
1545 || (IS_DIRECTORY_SEP (p[0]) && p - 1 != xnm)
|
|
657
|
1546 #else /* not WIN32_FILENAMES */
|
|
428
|
1547 || IS_DIRECTORY_SEP (p[0])
|
|
657
|
1548 #endif /* not WIN32_FILENAMES */
|
|
428
|
1549 )
|
|
|
1550 /* don't do p[-1] if that would go off the beginning --jwz */
|
|
|
1551 && p != nm && p > xnm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1552 xnm = p;
|
|
657
|
1553 #ifdef WIN32_FILENAMES
|
|
428
|
1554 else if (IS_DRIVE (p[0]) && p[1] == ':'
|
|
|
1555 && p > nm && IS_DIRECTORY_SEP (p[-1]))
|
|
|
1556 xnm = p;
|
|
|
1557 #endif
|
|
|
1558
|
|
|
1559 return make_string (xnm, x - xnm);
|
|
|
1560
|
|
|
1561 badsubst:
|
|
444
|
1562 syntax_error ("Bad format environment-variable substitution", filename);
|
|
428
|
1563 missingclose:
|
|
442
|
1564 syntax_error ("Missing \"}\" in environment-variable substitution",
|
|
444
|
1565 filename);
|
|
428
|
1566 badvar:
|
|
442
|
1567 syntax_error_2 ("Substituting nonexistent environment variable",
|
|
444
|
1568 filename, build_string ((char *) target));
|
|
428
|
1569
|
|
|
1570 /* NOTREACHED */
|
|
|
1571 return Qnil; /* suppress compiler warning */
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 /* A slightly faster and more convenient way to get
|
|
|
1575 (directory-file-name (expand-file-name FOO)). */
|
|
|
1576
|
|
|
1577 Lisp_Object
|
|
|
1578 expand_and_dir_to_file (Lisp_Object filename, Lisp_Object defdir)
|
|
|
1579 {
|
|
442
|
1580 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1581 Lisp_Object abspath;
|
|
|
1582 struct gcpro gcpro1;
|
|
|
1583
|
|
|
1584 abspath = Fexpand_file_name (filename, defdir);
|
|
|
1585 GCPRO1 (abspath);
|
|
|
1586 /* Remove final slash, if any (unless path is root).
|
|
|
1587 stat behaves differently depending! */
|
|
|
1588 if (XSTRING_LENGTH (abspath) > 1
|
|
|
1589 && IS_DIRECTORY_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 1))
|
|
|
1590 && !IS_DEVICE_SEP (XSTRING_BYTE (abspath, XSTRING_LENGTH (abspath) - 2)))
|
|
|
1591 /* We cannot take shortcuts; they might be wrong for magic file names. */
|
|
|
1592 abspath = Fdirectory_file_name (abspath);
|
|
|
1593 UNGCPRO;
|
|
|
1594 return abspath;
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 /* Signal an error if the file ABSNAME already exists.
|
|
|
1598 If INTERACTIVE is nonzero, ask the user whether to proceed,
|
|
|
1599 and bypass the error if the user says to go ahead.
|
|
|
1600 QUERYSTRING is a name for the action that is being considered
|
|
|
1601 to alter the file.
|
|
|
1602 *STATPTR is used to store the stat information if the file exists.
|
|
|
1603 If the file does not exist, STATPTR->st_mode is set to 0. */
|
|
|
1604
|
|
|
1605 static void
|
|
442
|
1606 barf_or_query_if_file_exists (Lisp_Object absname, const char *querystring,
|
|
428
|
1607 int interactive, struct stat *statptr)
|
|
|
1608 {
|
|
442
|
1609 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1610 struct stat statbuf;
|
|
|
1611
|
|
|
1612 /* stat is a good way to tell whether the file exists,
|
|
|
1613 regardless of what access permissions it has. */
|
|
442
|
1614 if (xemacs_stat ((char *) XSTRING_DATA (absname), &statbuf) >= 0)
|
|
428
|
1615 {
|
|
|
1616 Lisp_Object tem;
|
|
|
1617
|
|
|
1618 if (interactive)
|
|
|
1619 {
|
|
|
1620 Lisp_Object prompt;
|
|
|
1621 struct gcpro gcpro1;
|
|
|
1622
|
|
|
1623 prompt = emacs_doprnt_string_c
|
|
442
|
1624 ((const Bufbyte *) GETTEXT ("File %s already exists; %s anyway? "),
|
|
428
|
1625 Qnil, -1, XSTRING_DATA (absname),
|
|
|
1626 GETTEXT (querystring));
|
|
|
1627
|
|
|
1628 GCPRO1 (prompt);
|
|
|
1629 tem = call1 (Qyes_or_no_p, prompt);
|
|
|
1630 UNGCPRO;
|
|
|
1631 }
|
|
|
1632 else
|
|
|
1633 tem = Qnil;
|
|
|
1634
|
|
|
1635 if (NILP (tem))
|
|
|
1636 Fsignal (Qfile_already_exists,
|
|
|
1637 list2 (build_translated_string ("File already exists"),
|
|
|
1638 absname));
|
|
|
1639 if (statptr)
|
|
|
1640 *statptr = statbuf;
|
|
|
1641 }
|
|
|
1642 else
|
|
|
1643 {
|
|
|
1644 if (statptr)
|
|
|
1645 statptr->st_mode = 0;
|
|
|
1646 }
|
|
|
1647 return;
|
|
|
1648 }
|
|
|
1649
|
|
|
1650 DEFUN ("copy-file", Fcopy_file, 2, 4,
|
|
|
1651 "fCopy file: \nFCopy %s to file: \np\nP", /*
|
|
444
|
1652 Copy FILENAME to NEWNAME. Both args must be strings.
|
|
428
|
1653 Signals a `file-already-exists' error if file NEWNAME already exists,
|
|
|
1654 unless a third argument OK-IF-ALREADY-EXISTS is supplied and non-nil.
|
|
|
1655 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1656 This is what happens in interactive use with M-x.
|
|
|
1657 Fourth arg KEEP-TIME non-nil means give the new file the same
|
|
|
1658 last-modified time as the old one. (This works on only some systems.)
|
|
|
1659 A prefix arg makes KEEP-TIME non-nil.
|
|
|
1660 */
|
|
|
1661 (filename, newname, ok_if_already_exists, keep_time))
|
|
|
1662 {
|
|
442
|
1663 /* This function can call Lisp. GC checked 2000-07-28 ben */
|
|
428
|
1664 int ifd, ofd, n;
|
|
|
1665 char buf[16 * 1024];
|
|
|
1666 struct stat st, out_st;
|
|
|
1667 Lisp_Object handler;
|
|
|
1668 int speccount = specpdl_depth ();
|
|
|
1669 struct gcpro gcpro1, gcpro2;
|
|
|
1670 /* Lisp_Object args[6]; */
|
|
|
1671 int input_file_statable_p;
|
|
|
1672
|
|
|
1673 GCPRO2 (filename, newname);
|
|
|
1674 CHECK_STRING (filename);
|
|
|
1675 CHECK_STRING (newname);
|
|
|
1676 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1677 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1678
|
|
|
1679 /* If the input file name has special constructs in it,
|
|
|
1680 call the corresponding file handler. */
|
|
|
1681 handler = Ffind_file_name_handler (filename, Qcopy_file);
|
|
|
1682 /* Likewise for output file name. */
|
|
|
1683 if (NILP (handler))
|
|
|
1684 handler = Ffind_file_name_handler (newname, Qcopy_file);
|
|
|
1685 if (!NILP (handler))
|
|
|
1686 {
|
|
|
1687 UNGCPRO;
|
|
|
1688 return call5 (handler, Qcopy_file, filename, newname,
|
|
|
1689 ok_if_already_exists, keep_time);
|
|
|
1690 }
|
|
|
1691
|
|
|
1692 /* When second argument is a directory, copy the file into it.
|
|
|
1693 (copy-file "foo" "bar/") == (copy-file "foo" "bar/foo")
|
|
|
1694 */
|
|
|
1695 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1696 {
|
|
|
1697 Lisp_Object args[3];
|
|
|
1698 struct gcpro ngcpro1;
|
|
|
1699 int i = 1;
|
|
|
1700
|
|
|
1701 args[0] = newname;
|
|
|
1702 args[1] = Qnil; args[2] = Qnil;
|
|
|
1703 NGCPRO1 (*args);
|
|
|
1704 ngcpro1.nvars = 3;
|
|
442
|
1705 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (newname,
|
|
|
1706 XSTRING_LENGTH (newname) - 1)))
|
|
|
1707
|
|
|
1708 args[i++] = Fchar_to_string (Vdirectory_sep_char);
|
|
428
|
1709 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1710 newname = Fconcat (i, args);
|
|
|
1711 NUNGCPRO;
|
|
|
1712 }
|
|
|
1713
|
|
|
1714 if (NILP (ok_if_already_exists)
|
|
|
1715 || INTP (ok_if_already_exists))
|
|
|
1716 barf_or_query_if_file_exists (newname, "copy to it",
|
|
|
1717 INTP (ok_if_already_exists), &out_st);
|
|
442
|
1718 else if (xemacs_stat ((const char *) XSTRING_DATA (newname), &out_st) < 0)
|
|
428
|
1719 out_st.st_mode = 0;
|
|
|
1720
|
|
|
1721 ifd = interruptible_open ((char *) XSTRING_DATA (filename), O_RDONLY | OPEN_BINARY, 0);
|
|
|
1722 if (ifd < 0)
|
|
563
|
1723 report_file_error ("Opening input file", filename);
|
|
428
|
1724
|
|
|
1725 record_unwind_protect (close_file_unwind, make_int (ifd));
|
|
|
1726
|
|
|
1727 /* We can only copy regular files and symbolic links. Other files are not
|
|
|
1728 copyable by us. */
|
|
|
1729 input_file_statable_p = (fstat (ifd, &st) >= 0);
|
|
|
1730
|
|
442
|
1731 #ifndef WIN32_NATIVE
|
|
428
|
1732 if (out_st.st_mode != 0
|
|
|
1733 && st.st_dev == out_st.st_dev && st.st_ino == out_st.st_ino)
|
|
|
1734 {
|
|
|
1735 errno = 0;
|
|
|
1736 report_file_error ("Input and output files are the same",
|
|
563
|
1737 list3 (Qunbound, filename, newname));
|
|
428
|
1738 }
|
|
|
1739 #endif
|
|
|
1740
|
|
|
1741 #if defined (S_ISREG) && defined (S_ISLNK)
|
|
|
1742 if (input_file_statable_p)
|
|
|
1743 {
|
|
|
1744 if (!(S_ISREG (st.st_mode))
|
|
|
1745 /* XEmacs: have to allow S_ISCHR in order to copy /dev/null */
|
|
|
1746 #ifdef S_ISCHR
|
|
|
1747 && !(S_ISCHR (st.st_mode))
|
|
|
1748 #endif
|
|
|
1749 && !(S_ISLNK (st.st_mode)))
|
|
|
1750 {
|
|
|
1751 #if defined (EISDIR)
|
|
|
1752 /* Get a better looking error message. */
|
|
|
1753 errno = EISDIR;
|
|
|
1754 #endif /* EISDIR */
|
|
563
|
1755 report_file_error ("Non-regular file", filename);
|
|
428
|
1756 }
|
|
|
1757 }
|
|
|
1758 #endif /* S_ISREG && S_ISLNK */
|
|
|
1759
|
|
|
1760 ofd = open( (char *) XSTRING_DATA (newname),
|
|
|
1761 O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, CREAT_MODE);
|
|
|
1762 if (ofd < 0)
|
|
563
|
1763 report_file_error ("Opening output file", newname);
|
|
428
|
1764
|
|
|
1765 {
|
|
|
1766 Lisp_Object ofd_locative = noseeum_cons (make_int (ofd), Qnil);
|
|
|
1767
|
|
|
1768 record_unwind_protect (close_file_unwind, ofd_locative);
|
|
|
1769
|
|
|
1770 while ((n = read_allowing_quit (ifd, buf, sizeof (buf))) > 0)
|
|
|
1771 {
|
|
|
1772 if (write_allowing_quit (ofd, buf, n) != n)
|
|
563
|
1773 report_file_error ("I/O error", newname);
|
|
428
|
1774 }
|
|
|
1775
|
|
|
1776 /* Closing the output clobbers the file times on some systems. */
|
|
|
1777 if (close (ofd) < 0)
|
|
563
|
1778 report_file_error ("I/O error", newname);
|
|
428
|
1779
|
|
|
1780 if (input_file_statable_p)
|
|
|
1781 {
|
|
442
|
1782 if (!NILP (keep_time))
|
|
|
1783 {
|
|
|
1784 EMACS_TIME atime, mtime;
|
|
|
1785 EMACS_SET_SECS_USECS (atime, st.st_atime, 0);
|
|
|
1786 EMACS_SET_SECS_USECS (mtime, st.st_mtime, 0);
|
|
592
|
1787 if (set_file_times (newname, atime, mtime))
|
|
|
1788 report_file_error ("I/O error", list1 (newname));
|
|
442
|
1789 }
|
|
|
1790 chmod ((const char *) XSTRING_DATA (newname),
|
|
|
1791 st.st_mode & 07777);
|
|
428
|
1792 }
|
|
|
1793
|
|
|
1794 /* We'll close it by hand */
|
|
|
1795 XCAR (ofd_locative) = Qnil;
|
|
|
1796
|
|
|
1797 /* Close ifd */
|
|
|
1798 unbind_to (speccount, Qnil);
|
|
|
1799 }
|
|
|
1800
|
|
|
1801 UNGCPRO;
|
|
|
1802 return Qnil;
|
|
|
1803 }
|
|
|
1804
|
|
|
1805 DEFUN ("make-directory-internal", Fmake_directory_internal, 1, 1, 0, /*
|
|
|
1806 Create a directory. One argument, a file name string.
|
|
|
1807 */
|
|
|
1808 (dirname_))
|
|
|
1809 {
|
|
|
1810 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1811 char dir [MAXPATHLEN];
|
|
|
1812 Lisp_Object handler;
|
|
|
1813 struct gcpro gcpro1;
|
|
|
1814
|
|
|
1815 CHECK_STRING (dirname_);
|
|
|
1816 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1817
|
|
|
1818 GCPRO1 (dirname_);
|
|
|
1819 handler = Ffind_file_name_handler (dirname_, Qmake_directory_internal);
|
|
|
1820 UNGCPRO;
|
|
|
1821 if (!NILP (handler))
|
|
|
1822 return (call2 (handler, Qmake_directory_internal, dirname_));
|
|
|
1823
|
|
|
1824 if (XSTRING_LENGTH (dirname_) > (Bytecount) (sizeof (dir) - 1))
|
|
|
1825 {
|
|
|
1826 return Fsignal (Qfile_error,
|
|
|
1827 list3 (build_translated_string ("Creating directory"),
|
|
442
|
1828 build_translated_string ("pathname too long"),
|
|
428
|
1829 dirname_));
|
|
|
1830 }
|
|
|
1831 strncpy (dir, (char *) XSTRING_DATA (dirname_),
|
|
|
1832 XSTRING_LENGTH (dirname_) + 1);
|
|
|
1833
|
|
|
1834 if (dir [XSTRING_LENGTH (dirname_) - 1] == '/')
|
|
|
1835 dir [XSTRING_LENGTH (dirname_) - 1] = 0;
|
|
|
1836
|
|
|
1837 if (mkdir (dir, 0777) != 0)
|
|
563
|
1838 report_file_error ("Creating directory", dirname_);
|
|
428
|
1839
|
|
|
1840 return Qnil;
|
|
|
1841 }
|
|
|
1842
|
|
|
1843 DEFUN ("delete-directory", Fdelete_directory, 1, 1, "FDelete directory: ", /*
|
|
|
1844 Delete a directory. One argument, a file name or directory name string.
|
|
|
1845 */
|
|
|
1846 (dirname_))
|
|
|
1847 {
|
|
|
1848 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1849 Lisp_Object handler;
|
|
|
1850 struct gcpro gcpro1;
|
|
|
1851
|
|
|
1852 CHECK_STRING (dirname_);
|
|
|
1853
|
|
|
1854 GCPRO1 (dirname_);
|
|
|
1855 dirname_ = Fexpand_file_name (dirname_, Qnil);
|
|
|
1856 dirname_ = Fdirectory_file_name (dirname_);
|
|
|
1857
|
|
|
1858 handler = Ffind_file_name_handler (dirname_, Qdelete_directory);
|
|
|
1859 UNGCPRO;
|
|
|
1860 if (!NILP (handler))
|
|
|
1861 return (call2 (handler, Qdelete_directory, dirname_));
|
|
|
1862
|
|
|
1863 if (rmdir ((char *) XSTRING_DATA (dirname_)) != 0)
|
|
563
|
1864 report_file_error ("Removing directory", dirname_);
|
|
428
|
1865
|
|
|
1866 return Qnil;
|
|
|
1867 }
|
|
|
1868
|
|
|
1869 DEFUN ("delete-file", Fdelete_file, 1, 1, "fDelete file: ", /*
|
|
442
|
1870 Delete the file named FILENAME (a string).
|
|
|
1871 If FILENAME has multiple names, it continues to exist with the other names.
|
|
428
|
1872 */
|
|
|
1873 (filename))
|
|
|
1874 {
|
|
|
1875 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1876 Lisp_Object handler;
|
|
|
1877 struct gcpro gcpro1;
|
|
|
1878
|
|
|
1879 CHECK_STRING (filename);
|
|
|
1880 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1881
|
|
|
1882 GCPRO1 (filename);
|
|
|
1883 handler = Ffind_file_name_handler (filename, Qdelete_file);
|
|
|
1884 UNGCPRO;
|
|
|
1885 if (!NILP (handler))
|
|
|
1886 return call2 (handler, Qdelete_file, filename);
|
|
|
1887
|
|
|
1888 if (0 > unlink ((char *) XSTRING_DATA (filename)))
|
|
563
|
1889 report_file_error ("Removing old name", filename);
|
|
428
|
1890 return Qnil;
|
|
|
1891 }
|
|
|
1892
|
|
|
1893 static Lisp_Object
|
|
|
1894 internal_delete_file_1 (Lisp_Object ignore, Lisp_Object ignore2)
|
|
|
1895 {
|
|
|
1896 return Qt;
|
|
|
1897 }
|
|
|
1898
|
|
|
1899 /* Delete file FILENAME, returning 1 if successful and 0 if failed. */
|
|
|
1900
|
|
|
1901 int
|
|
|
1902 internal_delete_file (Lisp_Object filename)
|
|
|
1903 {
|
|
|
1904 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1905 return NILP (condition_case_1 (Qt, Fdelete_file, filename,
|
|
|
1906 internal_delete_file_1, Qnil));
|
|
|
1907 }
|
|
|
1908
|
|
|
1909 DEFUN ("rename-file", Frename_file, 2, 3,
|
|
|
1910 "fRename file: \nFRename %s to file: \np", /*
|
|
444
|
1911 Rename FILENAME as NEWNAME. Both args must be strings.
|
|
|
1912 If file has names other than FILENAME, it continues to have those names.
|
|
428
|
1913 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1914 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1915 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1916 This is what happens in interactive use with M-x.
|
|
|
1917 */
|
|
|
1918 (filename, newname, ok_if_already_exists))
|
|
|
1919 {
|
|
|
1920 /* This function can GC. GC checked 1997.04.06. */
|
|
|
1921 Lisp_Object handler;
|
|
|
1922 struct gcpro gcpro1, gcpro2;
|
|
|
1923
|
|
|
1924 GCPRO2 (filename, newname);
|
|
|
1925 CHECK_STRING (filename);
|
|
|
1926 CHECK_STRING (newname);
|
|
|
1927 filename = Fexpand_file_name (filename, Qnil);
|
|
|
1928 newname = Fexpand_file_name (newname, Qnil);
|
|
|
1929
|
|
|
1930 /* If the file name has special constructs in it,
|
|
|
1931 call the corresponding file handler. */
|
|
|
1932 handler = Ffind_file_name_handler (filename, Qrename_file);
|
|
|
1933 if (NILP (handler))
|
|
|
1934 handler = Ffind_file_name_handler (newname, Qrename_file);
|
|
|
1935 if (!NILP (handler))
|
|
|
1936 {
|
|
|
1937 UNGCPRO;
|
|
|
1938 return call4 (handler, Qrename_file,
|
|
|
1939 filename, newname, ok_if_already_exists);
|
|
|
1940 }
|
|
|
1941
|
|
|
1942 /* When second argument is a directory, rename the file into it.
|
|
|
1943 (rename-file "foo" "bar/") == (rename-file "foo" "bar/foo")
|
|
|
1944 */
|
|
|
1945 if (!NILP (Ffile_directory_p (newname)))
|
|
|
1946 {
|
|
|
1947 Lisp_Object args[3];
|
|
|
1948 struct gcpro ngcpro1;
|
|
|
1949 int i = 1;
|
|
|
1950
|
|
|
1951 args[0] = newname;
|
|
|
1952 args[1] = Qnil; args[2] = Qnil;
|
|
|
1953 NGCPRO1 (*args);
|
|
|
1954 ngcpro1.nvars = 3;
|
|
|
1955 if (XSTRING_BYTE (newname, XSTRING_LENGTH (newname) - 1) != '/')
|
|
|
1956 args[i++] = build_string ("/");
|
|
|
1957 args[i++] = Ffile_name_nondirectory (filename);
|
|
|
1958 newname = Fconcat (i, args);
|
|
|
1959 NUNGCPRO;
|
|
|
1960 }
|
|
|
1961
|
|
|
1962 if (NILP (ok_if_already_exists)
|
|
|
1963 || INTP (ok_if_already_exists))
|
|
|
1964 barf_or_query_if_file_exists (newname, "rename to it",
|
|
|
1965 INTP (ok_if_already_exists), 0);
|
|
|
1966
|
|
|
1967 /* Syncing with FSF 19.34.6 note: FSF does not have conditional code for
|
|
442
|
1968 WIN32_NATIVE here; I've removed it. --marcpa */
|
|
|
1969
|
|
|
1970 /* We have configure check for rename() and emulate using
|
|
|
1971 link()/unlink() if necessary. */
|
|
428
|
1972 if (0 > rename ((char *) XSTRING_DATA (filename),
|
|
|
1973 (char *) XSTRING_DATA (newname)))
|
|
|
1974 {
|
|
|
1975 if (errno == EXDEV)
|
|
|
1976 {
|
|
|
1977 Fcopy_file (filename, newname,
|
|
|
1978 /* We have already prompted if it was an integer,
|
|
|
1979 so don't have copy-file prompt again. */
|
|
|
1980 (NILP (ok_if_already_exists) ? Qnil : Qt),
|
|
|
1981 Qt);
|
|
|
1982 Fdelete_file (filename);
|
|
|
1983 }
|
|
|
1984 else
|
|
|
1985 {
|
|
563
|
1986 report_file_error ("Renaming", list3 (Qunbound, filename, newname));
|
|
428
|
1987 }
|
|
|
1988 }
|
|
|
1989 UNGCPRO;
|
|
|
1990 return Qnil;
|
|
|
1991 }
|
|
|
1992
|
|
|
1993 DEFUN ("add-name-to-file", Fadd_name_to_file, 2, 3,
|
|
|
1994 "fAdd name to file: \nFName to add to %s: \np", /*
|
|
444
|
1995 Give FILENAME additional name NEWNAME. Both args must be strings.
|
|
428
|
1996 Signals a `file-already-exists' error if a file NEWNAME already exists
|
|
|
1997 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
1998 A number as third arg means request confirmation if NEWNAME already exists.
|
|
|
1999 This is what happens in interactive use with M-x.
|
|
|
2000 */
|
|
|
2001 (filename, newname, ok_if_already_exists))
|
|
|
2002 {
|
|
|
2003 /* This function can GC. GC checked 1997.04.06. */
|
|
|
2004 Lisp_Object handler;
|
|
|
2005 struct gcpro gcpro1, gcpro2;
|
|
|
2006
|
|
|
2007 GCPRO2 (filename, newname);
|
|
|
2008 CHECK_STRING (filename);
|
|
|
2009 CHECK_STRING (newname);
|
|
|
2010 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2011 newname = Fexpand_file_name (newname, Qnil);
|
|
|
2012
|
|
|
2013 /* If the file name has special constructs in it,
|
|
|
2014 call the corresponding file handler. */
|
|
|
2015 handler = Ffind_file_name_handler (filename, Qadd_name_to_file);
|
|
|
2016 if (!NILP (handler))
|
|
|
2017 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2018 newname, ok_if_already_exists));
|
|
|
2019
|
|
|
2020 /* If the new name has special constructs in it,
|
|
|
2021 call the corresponding file handler. */
|
|
|
2022 handler = Ffind_file_name_handler (newname, Qadd_name_to_file);
|
|
|
2023 if (!NILP (handler))
|
|
|
2024 RETURN_UNGCPRO (call4 (handler, Qadd_name_to_file, filename,
|
|
|
2025 newname, ok_if_already_exists));
|
|
|
2026
|
|
|
2027 if (NILP (ok_if_already_exists)
|
|
|
2028 || INTP (ok_if_already_exists))
|
|
|
2029 barf_or_query_if_file_exists (newname, "make it a new name",
|
|
|
2030 INTP (ok_if_already_exists), 0);
|
|
|
2031 /* Syncing with FSF 19.34.6 note: FSF does not report a file error
|
|
|
2032 on NT here. --marcpa */
|
|
|
2033 /* But FSF #defines link as sys_link which is supplied in nt.c. We can't do
|
|
|
2034 that because sysfile.h defines sys_link depending on ENCAPSULATE_LINK.
|
|
|
2035 Reverted to previous behavior pending a working fix. (jhar) */
|
|
442
|
2036 #if defined(WIN32_NATIVE)
|
|
428
|
2037 /* Windows does not support this operation. */
|
|
563
|
2038 signal_error_2 (Qunimplemented, "Adding new name", filename, newname);
|
|
442
|
2039 #else /* not defined(WIN32_NATIVE) */
|
|
428
|
2040
|
|
|
2041 unlink ((char *) XSTRING_DATA (newname));
|
|
|
2042 if (0 > link ((char *) XSTRING_DATA (filename),
|
|
|
2043 (char *) XSTRING_DATA (newname)))
|
|
|
2044 {
|
|
|
2045 report_file_error ("Adding new name",
|
|
563
|
2046 list3 (Qunbound, filename, newname));
|
|
428
|
2047 }
|
|
442
|
2048 #endif /* defined(WIN32_NATIVE) */
|
|
428
|
2049
|
|
|
2050 UNGCPRO;
|
|
|
2051 return Qnil;
|
|
|
2052 }
|
|
|
2053
|
|
|
2054 DEFUN ("make-symbolic-link", Fmake_symbolic_link, 2, 3,
|
|
|
2055 "FMake symbolic link to file: \nFMake symbolic link to file %s: \np", /*
|
|
|
2056 Make a symbolic link to FILENAME, named LINKNAME. Both args strings.
|
|
|
2057 Signals a `file-already-exists' error if a file LINKNAME already exists
|
|
|
2058 unless optional third argument OK-IF-ALREADY-EXISTS is non-nil.
|
|
|
2059 A number as third arg means request confirmation if LINKNAME already exists.
|
|
|
2060 This happens for interactive use with M-x.
|
|
|
2061 */
|
|
|
2062 (filename, linkname, ok_if_already_exists))
|
|
|
2063 {
|
|
|
2064 /* This function can GC. GC checked 1997.06.04. */
|
|
442
|
2065 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2066 Lisp_Object handler;
|
|
|
2067 struct gcpro gcpro1, gcpro2;
|
|
|
2068
|
|
|
2069 GCPRO2 (filename, linkname);
|
|
|
2070 CHECK_STRING (filename);
|
|
|
2071 CHECK_STRING (linkname);
|
|
|
2072 /* If the link target has a ~, we must expand it to get
|
|
|
2073 a truly valid file name. Otherwise, do not expand;
|
|
|
2074 we want to permit links to relative file names. */
|
|
|
2075 if (XSTRING_BYTE (filename, 0) == '~')
|
|
|
2076 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2077 linkname = Fexpand_file_name (linkname, Qnil);
|
|
|
2078
|
|
|
2079 /* If the file name has special constructs in it,
|
|
|
2080 call the corresponding file handler. */
|
|
|
2081 handler = Ffind_file_name_handler (filename, Qmake_symbolic_link);
|
|
|
2082 if (!NILP (handler))
|
|
|
2083 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename, linkname,
|
|
|
2084 ok_if_already_exists));
|
|
|
2085
|
|
|
2086 /* If the new link name has special constructs in it,
|
|
|
2087 call the corresponding file handler. */
|
|
|
2088 handler = Ffind_file_name_handler (linkname, Qmake_symbolic_link);
|
|
|
2089 if (!NILP (handler))
|
|
|
2090 RETURN_UNGCPRO (call4 (handler, Qmake_symbolic_link, filename,
|
|
|
2091 linkname, ok_if_already_exists));
|
|
|
2092
|
|
442
|
2093 #ifdef S_IFLNK
|
|
428
|
2094 if (NILP (ok_if_already_exists)
|
|
|
2095 || INTP (ok_if_already_exists))
|
|
|
2096 barf_or_query_if_file_exists (linkname, "make it a link",
|
|
|
2097 INTP (ok_if_already_exists), 0);
|
|
|
2098
|
|
|
2099 unlink ((char *) XSTRING_DATA (linkname));
|
|
|
2100 if (0 > symlink ((char *) XSTRING_DATA (filename),
|
|
|
2101 (char *) XSTRING_DATA (linkname)))
|
|
|
2102 {
|
|
|
2103 report_file_error ("Making symbolic link",
|
|
563
|
2104 list3 (Qunbound, filename, linkname));
|
|
428
|
2105 }
|
|
442
|
2106 #endif /* S_IFLNK */
|
|
|
2107
|
|
428
|
2108 UNGCPRO;
|
|
|
2109 return Qnil;
|
|
|
2110 }
|
|
|
2111
|
|
|
2112 #ifdef HPUX_NET
|
|
|
2113
|
|
|
2114 DEFUN ("sysnetunam", Fsysnetunam, 2, 2, 0, /*
|
|
|
2115 Open a network connection to PATH using LOGIN as the login string.
|
|
|
2116 */
|
|
|
2117 (path, login))
|
|
|
2118 {
|
|
|
2119 int netresult;
|
|
440
|
2120 const char *path_ext;
|
|
|
2121 const char *login_ext;
|
|
428
|
2122
|
|
|
2123 CHECK_STRING (path);
|
|
|
2124 CHECK_STRING (login);
|
|
|
2125
|
|
|
2126 /* netunam, being a strange-o system call only used once, is not
|
|
|
2127 encapsulated. */
|
|
440
|
2128
|
|
442
|
2129 LISP_STRING_TO_EXTERNAL (path, path_ext, Qfile_name);
|
|
|
2130 LISP_STRING_TO_EXTERNAL (login, login_ext, Qnative);
|
|
440
|
2131
|
|
|
2132 netresult = netunam (path_ext, login_ext);
|
|
|
2133
|
|
|
2134 return netresult == -1 ? Qnil : Qt;
|
|
428
|
2135 }
|
|
|
2136 #endif /* HPUX_NET */
|
|
|
2137
|
|
|
2138 DEFUN ("file-name-absolute-p", Ffile_name_absolute_p, 1, 1, 0, /*
|
|
|
2139 Return t if file FILENAME specifies an absolute path name.
|
|
|
2140 On Unix, this is a name starting with a `/' or a `~'.
|
|
|
2141 */
|
|
|
2142 (filename))
|
|
|
2143 {
|
|
|
2144 /* This function does not GC */
|
|
|
2145 Bufbyte *ptr;
|
|
|
2146
|
|
|
2147 CHECK_STRING (filename);
|
|
|
2148 ptr = XSTRING_DATA (filename);
|
|
|
2149 return (IS_DIRECTORY_SEP (*ptr) || *ptr == '~'
|
|
657
|
2150 #ifdef WIN32_FILENAMES
|
|
428
|
2151 || (IS_DRIVE (*ptr) && ptr[1] == ':' && IS_DIRECTORY_SEP (ptr[2]))
|
|
|
2152 #endif
|
|
|
2153 ) ? Qt : Qnil;
|
|
|
2154 }
|
|
|
2155
|
|
|
2156 /* Return nonzero if file FILENAME exists and can be executed. */
|
|
|
2157
|
|
|
2158 static int
|
|
|
2159 check_executable (char *filename)
|
|
|
2160 {
|
|
442
|
2161 #ifdef WIN32_NATIVE
|
|
428
|
2162 struct stat st;
|
|
442
|
2163 if (xemacs_stat (filename, &st) < 0)
|
|
428
|
2164 return 0;
|
|
|
2165 return ((st.st_mode & S_IEXEC) != 0);
|
|
442
|
2166 #else /* not WIN32_NATIVE */
|
|
428
|
2167 #ifdef HAVE_EACCESS
|
|
442
|
2168 return eaccess (filename, X_OK) >= 0;
|
|
428
|
2169 #else
|
|
|
2170 /* Access isn't quite right because it uses the real uid
|
|
|
2171 and we really want to test with the effective uid.
|
|
|
2172 But Unix doesn't give us a right way to do it. */
|
|
442
|
2173 return access (filename, X_OK) >= 0;
|
|
428
|
2174 #endif /* HAVE_EACCESS */
|
|
442
|
2175 #endif /* not WIN32_NATIVE */
|
|
428
|
2176 }
|
|
|
2177
|
|
|
2178 /* Return nonzero if file FILENAME exists and can be written. */
|
|
|
2179
|
|
|
2180 static int
|
|
442
|
2181 check_writable (const char *filename)
|
|
428
|
2182 {
|
|
|
2183 #ifdef HAVE_EACCESS
|
|
442
|
2184 return (eaccess (filename, W_OK) >= 0);
|
|
428
|
2185 #else
|
|
|
2186 /* Access isn't quite right because it uses the real uid
|
|
|
2187 and we really want to test with the effective uid.
|
|
|
2188 But Unix doesn't give us a right way to do it.
|
|
|
2189 Opening with O_WRONLY could work for an ordinary file,
|
|
|
2190 but would lose for directories. */
|
|
442
|
2191 return (access (filename, W_OK) >= 0);
|
|
428
|
2192 #endif
|
|
|
2193 }
|
|
|
2194
|
|
|
2195 DEFUN ("file-exists-p", Ffile_exists_p, 1, 1, 0, /*
|
|
|
2196 Return t if file FILENAME exists. (This does not mean you can read it.)
|
|
|
2197 See also `file-readable-p' and `file-attributes'.
|
|
|
2198 */
|
|
|
2199 (filename))
|
|
|
2200 {
|
|
442
|
2201 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
2202 Lisp_Object abspath;
|
|
|
2203 Lisp_Object handler;
|
|
|
2204 struct stat statbuf;
|
|
|
2205 struct gcpro gcpro1;
|
|
|
2206
|
|
|
2207 CHECK_STRING (filename);
|
|
|
2208 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2209
|
|
|
2210 /* If the file name has special constructs in it,
|
|
|
2211 call the corresponding file handler. */
|
|
|
2212 GCPRO1 (abspath);
|
|
|
2213 handler = Ffind_file_name_handler (abspath, Qfile_exists_p);
|
|
|
2214 UNGCPRO;
|
|
|
2215 if (!NILP (handler))
|
|
|
2216 return call2 (handler, Qfile_exists_p, abspath);
|
|
|
2217
|
|
442
|
2218 return xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0 ? Qt : Qnil;
|
|
428
|
2219 }
|
|
|
2220
|
|
|
2221 DEFUN ("file-executable-p", Ffile_executable_p, 1, 1, 0, /*
|
|
|
2222 Return t if FILENAME can be executed by you.
|
|
|
2223 For a directory, this means you can access files in that directory.
|
|
|
2224 */
|
|
|
2225 (filename))
|
|
|
2226
|
|
|
2227 {
|
|
442
|
2228 /* This function can GC. GC checked 07-11-2000 ben. */
|
|
428
|
2229 Lisp_Object abspath;
|
|
|
2230 Lisp_Object handler;
|
|
|
2231 struct gcpro gcpro1;
|
|
|
2232
|
|
|
2233 CHECK_STRING (filename);
|
|
|
2234 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2235
|
|
|
2236 /* If the file name has special constructs in it,
|
|
|
2237 call the corresponding file handler. */
|
|
|
2238 GCPRO1 (abspath);
|
|
|
2239 handler = Ffind_file_name_handler (abspath, Qfile_executable_p);
|
|
|
2240 UNGCPRO;
|
|
|
2241 if (!NILP (handler))
|
|
|
2242 return call2 (handler, Qfile_executable_p, abspath);
|
|
|
2243
|
|
|
2244 return check_executable ((char *) XSTRING_DATA (abspath)) ? Qt : Qnil;
|
|
|
2245 }
|
|
|
2246
|
|
|
2247 DEFUN ("file-readable-p", Ffile_readable_p, 1, 1, 0, /*
|
|
|
2248 Return t if file FILENAME exists and you can read it.
|
|
|
2249 See also `file-exists-p' and `file-attributes'.
|
|
|
2250 */
|
|
|
2251 (filename))
|
|
|
2252 {
|
|
|
2253 /* This function can GC */
|
|
|
2254 Lisp_Object abspath = Qnil;
|
|
|
2255 Lisp_Object handler;
|
|
|
2256 struct gcpro gcpro1;
|
|
|
2257 GCPRO1 (abspath);
|
|
|
2258
|
|
|
2259 CHECK_STRING (filename);
|
|
|
2260 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2261
|
|
|
2262 /* If the file name has special constructs in it,
|
|
|
2263 call the corresponding file handler. */
|
|
|
2264 handler = Ffind_file_name_handler (abspath, Qfile_readable_p);
|
|
|
2265 if (!NILP (handler))
|
|
|
2266 RETURN_UNGCPRO (call2 (handler, Qfile_readable_p, abspath));
|
|
|
2267
|
|
657
|
2268 #if defined(WIN32_FILENAMES)
|
|
428
|
2269 /* Under MS-DOS and Windows, open does not work for directories. */
|
|
|
2270 UNGCPRO;
|
|
593
|
2271 if (access ((char *) XSTRING_DATA (abspath), 0) == 0)
|
|
428
|
2272 return Qt;
|
|
|
2273 else
|
|
|
2274 return Qnil;
|
|
657
|
2275 #else /* not WIN32_FILENAMES */
|
|
428
|
2276 {
|
|
|
2277 int desc = interruptible_open ((char *) XSTRING_DATA (abspath), O_RDONLY | OPEN_BINARY, 0);
|
|
|
2278 UNGCPRO;
|
|
|
2279 if (desc < 0)
|
|
|
2280 return Qnil;
|
|
|
2281 close (desc);
|
|
|
2282 return Qt;
|
|
|
2283 }
|
|
657
|
2284 #endif /* not WIN32_FILENAMES */
|
|
428
|
2285 }
|
|
|
2286
|
|
|
2287 /* Having this before file-symlink-p mysteriously caused it to be forgotten
|
|
|
2288 on the RT/PC. */
|
|
|
2289 DEFUN ("file-writable-p", Ffile_writable_p, 1, 1, 0, /*
|
|
|
2290 Return t if file FILENAME can be written or created by you.
|
|
|
2291 */
|
|
|
2292 (filename))
|
|
|
2293 {
|
|
|
2294 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2295 Lisp_Object abspath, dir;
|
|
|
2296 Lisp_Object handler;
|
|
|
2297 struct stat statbuf;
|
|
|
2298 struct gcpro gcpro1;
|
|
|
2299
|
|
|
2300 CHECK_STRING (filename);
|
|
|
2301 abspath = Fexpand_file_name (filename, Qnil);
|
|
|
2302
|
|
|
2303 /* If the file name has special constructs in it,
|
|
|
2304 call the corresponding file handler. */
|
|
|
2305 GCPRO1 (abspath);
|
|
|
2306 handler = Ffind_file_name_handler (abspath, Qfile_writable_p);
|
|
|
2307 UNGCPRO;
|
|
|
2308 if (!NILP (handler))
|
|
|
2309 return call2 (handler, Qfile_writable_p, abspath);
|
|
|
2310
|
|
442
|
2311 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &statbuf) >= 0)
|
|
428
|
2312 return (check_writable ((char *) XSTRING_DATA (abspath))
|
|
|
2313 ? Qt : Qnil);
|
|
|
2314
|
|
|
2315
|
|
|
2316 GCPRO1 (abspath);
|
|
|
2317 dir = Ffile_name_directory (abspath);
|
|
|
2318 UNGCPRO;
|
|
|
2319 return (check_writable (!NILP (dir) ? (char *) XSTRING_DATA (dir)
|
|
|
2320 : "")
|
|
|
2321 ? Qt : Qnil);
|
|
|
2322 }
|
|
|
2323
|
|
|
2324 DEFUN ("file-symlink-p", Ffile_symlink_p, 1, 1, 0, /*
|
|
|
2325 Return non-nil if file FILENAME is the name of a symbolic link.
|
|
|
2326 The value is the name of the file to which it is linked.
|
|
|
2327 Otherwise returns nil.
|
|
|
2328 */
|
|
|
2329 (filename))
|
|
|
2330 {
|
|
|
2331 /* This function can GC. GC checked 1997.04.10. */
|
|
442
|
2332 /* XEmacs change: run handlers even if local machine doesn't have symlinks */
|
|
428
|
2333 #ifdef S_IFLNK
|
|
|
2334 char *buf;
|
|
|
2335 int bufsize;
|
|
|
2336 int valsize;
|
|
|
2337 Lisp_Object val;
|
|
442
|
2338 #endif
|
|
428
|
2339 Lisp_Object handler;
|
|
|
2340 struct gcpro gcpro1;
|
|
|
2341
|
|
|
2342 CHECK_STRING (filename);
|
|
|
2343 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2344
|
|
|
2345 /* If the file name has special constructs in it,
|
|
|
2346 call the corresponding file handler. */
|
|
|
2347 GCPRO1 (filename);
|
|
|
2348 handler = Ffind_file_name_handler (filename, Qfile_symlink_p);
|
|
|
2349 UNGCPRO;
|
|
|
2350 if (!NILP (handler))
|
|
|
2351 return call2 (handler, Qfile_symlink_p, filename);
|
|
|
2352
|
|
442
|
2353 #ifdef S_IFLNK
|
|
428
|
2354 bufsize = 100;
|
|
|
2355 while (1)
|
|
|
2356 {
|
|
|
2357 buf = xnew_array_and_zero (char, bufsize);
|
|
|
2358 valsize = readlink ((char *) XSTRING_DATA (filename),
|
|
|
2359 buf, bufsize);
|
|
|
2360 if (valsize < bufsize) break;
|
|
|
2361 /* Buffer was not long enough */
|
|
|
2362 xfree (buf);
|
|
|
2363 bufsize *= 2;
|
|
|
2364 }
|
|
|
2365 if (valsize == -1)
|
|
|
2366 {
|
|
|
2367 xfree (buf);
|
|
|
2368 return Qnil;
|
|
|
2369 }
|
|
|
2370 val = make_string ((Bufbyte *) buf, valsize);
|
|
|
2371 xfree (buf);
|
|
|
2372 return val;
|
|
|
2373 #else /* not S_IFLNK */
|
|
|
2374 return Qnil;
|
|
|
2375 #endif /* not S_IFLNK */
|
|
|
2376 }
|
|
|
2377
|
|
|
2378 DEFUN ("file-directory-p", Ffile_directory_p, 1, 1, 0, /*
|
|
|
2379 Return t if file FILENAME is the name of a directory as a file.
|
|
|
2380 A directory name spec may be given instead; then the value is t
|
|
|
2381 if the directory so specified exists and really is a directory.
|
|
|
2382 */
|
|
|
2383 (filename))
|
|
|
2384 {
|
|
|
2385 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2386 Lisp_Object abspath;
|
|
|
2387 struct stat st;
|
|
|
2388 Lisp_Object handler;
|
|
|
2389 struct gcpro gcpro1;
|
|
|
2390
|
|
|
2391 GCPRO1 (current_buffer->directory);
|
|
|
2392 abspath = expand_and_dir_to_file (filename,
|
|
|
2393 current_buffer->directory);
|
|
|
2394 UNGCPRO;
|
|
|
2395
|
|
|
2396 /* If the file name has special constructs in it,
|
|
|
2397 call the corresponding file handler. */
|
|
|
2398 GCPRO1 (abspath);
|
|
|
2399 handler = Ffind_file_name_handler (abspath, Qfile_directory_p);
|
|
|
2400 UNGCPRO;
|
|
|
2401 if (!NILP (handler))
|
|
|
2402 return call2 (handler, Qfile_directory_p, abspath);
|
|
|
2403
|
|
442
|
2404 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2405 return Qnil;
|
|
|
2406 return (st.st_mode & S_IFMT) == S_IFDIR ? Qt : Qnil;
|
|
|
2407 }
|
|
|
2408
|
|
|
2409 DEFUN ("file-accessible-directory-p", Ffile_accessible_directory_p, 1, 1, 0, /*
|
|
|
2410 Return t if file FILENAME is the name of a directory as a file,
|
|
|
2411 and files in that directory can be opened by you. In order to use a
|
|
|
2412 directory as a buffer's current directory, this predicate must return true.
|
|
|
2413 A directory name spec may be given instead; then the value is t
|
|
|
2414 if the directory so specified exists and really is a readable and
|
|
|
2415 searchable directory.
|
|
|
2416 */
|
|
|
2417 (filename))
|
|
|
2418 {
|
|
|
2419 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2420 Lisp_Object handler;
|
|
|
2421
|
|
|
2422 /* If the file name has special constructs in it,
|
|
|
2423 call the corresponding file handler. */
|
|
|
2424 handler = Ffind_file_name_handler (filename, Qfile_accessible_directory_p);
|
|
|
2425 if (!NILP (handler))
|
|
|
2426 return call2 (handler, Qfile_accessible_directory_p,
|
|
|
2427 filename);
|
|
|
2428
|
|
442
|
2429 #if !defined(WIN32_NATIVE)
|
|
428
|
2430 if (NILP (Ffile_directory_p (filename)))
|
|
|
2431 return (Qnil);
|
|
|
2432 else
|
|
|
2433 return Ffile_executable_p (filename);
|
|
|
2434 #else
|
|
|
2435 {
|
|
|
2436 int tem;
|
|
|
2437 struct gcpro gcpro1;
|
|
|
2438 /* It's an unlikely combination, but yes we really do need to gcpro:
|
|
|
2439 Suppose that file-accessible-directory-p has no handler, but
|
|
|
2440 file-directory-p does have a handler; this handler causes a GC which
|
|
|
2441 relocates the string in `filename'; and finally file-directory-p
|
|
|
2442 returns non-nil. Then we would end up passing a garbaged string
|
|
|
2443 to file-executable-p. */
|
|
|
2444 GCPRO1 (filename);
|
|
|
2445 tem = (NILP (Ffile_directory_p (filename))
|
|
|
2446 || NILP (Ffile_executable_p (filename)));
|
|
|
2447 UNGCPRO;
|
|
|
2448 return tem ? Qnil : Qt;
|
|
|
2449 }
|
|
442
|
2450 #endif /* !defined(WIN32_NATIVE) */
|
|
428
|
2451 }
|
|
|
2452
|
|
|
2453 DEFUN ("file-regular-p", Ffile_regular_p, 1, 1, 0, /*
|
|
|
2454 Return t if file FILENAME is the name of a regular file.
|
|
|
2455 This is the sort of file that holds an ordinary stream of data bytes.
|
|
|
2456 */
|
|
|
2457 (filename))
|
|
|
2458 {
|
|
|
2459 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2460 Lisp_Object abspath;
|
|
|
2461 struct stat st;
|
|
|
2462 Lisp_Object handler;
|
|
|
2463 struct gcpro gcpro1;
|
|
|
2464
|
|
|
2465 GCPRO1 (current_buffer->directory);
|
|
|
2466 abspath = expand_and_dir_to_file (filename, current_buffer->directory);
|
|
|
2467 UNGCPRO;
|
|
|
2468
|
|
|
2469 /* If the file name has special constructs in it,
|
|
|
2470 call the corresponding file handler. */
|
|
|
2471 GCPRO1 (abspath);
|
|
|
2472 handler = Ffind_file_name_handler (abspath, Qfile_regular_p);
|
|
|
2473 UNGCPRO;
|
|
|
2474 if (!NILP (handler))
|
|
|
2475 return call2 (handler, Qfile_regular_p, abspath);
|
|
|
2476
|
|
442
|
2477 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2478 return Qnil;
|
|
|
2479 return (st.st_mode & S_IFMT) == S_IFREG ? Qt : Qnil;
|
|
|
2480 }
|
|
|
2481
|
|
|
2482 DEFUN ("file-modes", Ffile_modes, 1, 1, 0, /*
|
|
444
|
2483 Return mode bits of file named FILENAME, as an integer.
|
|
428
|
2484 */
|
|
|
2485 (filename))
|
|
|
2486 {
|
|
|
2487 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2488 Lisp_Object abspath;
|
|
|
2489 struct stat st;
|
|
|
2490 Lisp_Object handler;
|
|
|
2491 struct gcpro gcpro1;
|
|
|
2492
|
|
|
2493 GCPRO1 (current_buffer->directory);
|
|
|
2494 abspath = expand_and_dir_to_file (filename,
|
|
|
2495 current_buffer->directory);
|
|
|
2496 UNGCPRO;
|
|
|
2497
|
|
|
2498 /* If the file name has special constructs in it,
|
|
|
2499 call the corresponding file handler. */
|
|
|
2500 GCPRO1 (abspath);
|
|
|
2501 handler = Ffind_file_name_handler (abspath, Qfile_modes);
|
|
|
2502 UNGCPRO;
|
|
|
2503 if (!NILP (handler))
|
|
|
2504 return call2 (handler, Qfile_modes, abspath);
|
|
|
2505
|
|
442
|
2506 if (xemacs_stat ((char *) XSTRING_DATA (abspath), &st) < 0)
|
|
428
|
2507 return Qnil;
|
|
|
2508 /* Syncing with FSF 19.34.6 note: not in FSF, #if 0'ed out here. */
|
|
|
2509 #if 0
|
|
442
|
2510 #ifdef WIN32_NATIVE
|
|
428
|
2511 if (check_executable (XSTRING_DATA (abspath)))
|
|
|
2512 st.st_mode |= S_IEXEC;
|
|
442
|
2513 #endif /* WIN32_NATIVE */
|
|
428
|
2514 #endif /* 0 */
|
|
|
2515
|
|
|
2516 return make_int (st.st_mode & 07777);
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 DEFUN ("set-file-modes", Fset_file_modes, 2, 2, 0, /*
|
|
444
|
2520 Set mode bits of file named FILENAME to MODE (an integer).
|
|
428
|
2521 Only the 12 low bits of MODE are used.
|
|
|
2522 */
|
|
|
2523 (filename, mode))
|
|
|
2524 {
|
|
|
2525 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2526 Lisp_Object abspath;
|
|
|
2527 Lisp_Object handler;
|
|
|
2528 struct gcpro gcpro1;
|
|
|
2529
|
|
|
2530 GCPRO1 (current_buffer->directory);
|
|
|
2531 abspath = Fexpand_file_name (filename, current_buffer->directory);
|
|
|
2532 UNGCPRO;
|
|
|
2533
|
|
|
2534 CHECK_INT (mode);
|
|
|
2535
|
|
|
2536 /* If the file name has special constructs in it,
|
|
|
2537 call the corresponding file handler. */
|
|
|
2538 GCPRO1 (abspath);
|
|
|
2539 handler = Ffind_file_name_handler (abspath, Qset_file_modes);
|
|
|
2540 UNGCPRO;
|
|
|
2541 if (!NILP (handler))
|
|
|
2542 return call3 (handler, Qset_file_modes, abspath, mode);
|
|
|
2543
|
|
|
2544 if (chmod ((char *) XSTRING_DATA (abspath), XINT (mode)) < 0)
|
|
563
|
2545 report_file_error ("Doing chmod", abspath);
|
|
428
|
2546
|
|
|
2547 return Qnil;
|
|
|
2548 }
|
|
|
2549
|
|
|
2550 DEFUN ("set-default-file-modes", Fset_default_file_modes, 1, 1, 0, /*
|
|
|
2551 Set the file permission bits for newly created files.
|
|
444
|
2552 The argument MODE should be an integer; if a bit in MODE is 1,
|
|
|
2553 subsequently created files will not have the permission corresponding
|
|
|
2554 to that bit enabled. Only the low 9 bits are used.
|
|
428
|
2555 This setting is inherited by subprocesses.
|
|
|
2556 */
|
|
|
2557 (mode))
|
|
|
2558 {
|
|
|
2559 CHECK_INT (mode);
|
|
|
2560
|
|
|
2561 umask ((~ XINT (mode)) & 0777);
|
|
|
2562
|
|
|
2563 return Qnil;
|
|
|
2564 }
|
|
|
2565
|
|
|
2566 DEFUN ("default-file-modes", Fdefault_file_modes, 0, 0, 0, /*
|
|
|
2567 Return the default file protection for created files.
|
|
|
2568 The umask value determines which permissions are enabled in newly
|
|
|
2569 created files. If a permission's bit in the umask is 1, subsequently
|
|
|
2570 created files will not have that permission enabled.
|
|
|
2571 */
|
|
|
2572 ())
|
|
|
2573 {
|
|
|
2574 int mode;
|
|
|
2575
|
|
|
2576 mode = umask (0);
|
|
|
2577 umask (mode);
|
|
|
2578
|
|
|
2579 return make_int ((~ mode) & 0777);
|
|
|
2580 }
|
|
|
2581
|
|
|
2582 DEFUN ("unix-sync", Funix_sync, 0, 0, "", /*
|
|
|
2583 Tell Unix to finish all pending disk updates.
|
|
|
2584 */
|
|
|
2585 ())
|
|
|
2586 {
|
|
442
|
2587 #ifndef WIN32_NATIVE
|
|
428
|
2588 sync ();
|
|
|
2589 #endif
|
|
|
2590 return Qnil;
|
|
|
2591 }
|
|
|
2592
|
|
|
2593
|
|
|
2594 DEFUN ("file-newer-than-file-p", Ffile_newer_than_file_p, 2, 2, 0, /*
|
|
|
2595 Return t if file FILE1 is newer than file FILE2.
|
|
|
2596 If FILE1 does not exist, the answer is nil;
|
|
|
2597 otherwise, if FILE2 does not exist, the answer is t.
|
|
|
2598 */
|
|
|
2599 (file1, file2))
|
|
|
2600 {
|
|
|
2601 /* This function can GC. GC checked 1997.04.10. */
|
|
|
2602 Lisp_Object abspath1, abspath2;
|
|
|
2603 struct stat st;
|
|
|
2604 int mtime1;
|
|
|
2605 Lisp_Object handler;
|
|
|
2606 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
2607
|
|
|
2608 CHECK_STRING (file1);
|
|
|
2609 CHECK_STRING (file2);
|
|
|
2610
|
|
|
2611 abspath1 = Qnil;
|
|
|
2612 abspath2 = Qnil;
|
|
|
2613
|
|
|
2614 GCPRO3 (abspath1, abspath2, current_buffer->directory);
|
|
|
2615 abspath1 = expand_and_dir_to_file (file1, current_buffer->directory);
|
|
|
2616 abspath2 = expand_and_dir_to_file (file2, current_buffer->directory);
|
|
|
2617
|
|
|
2618 /* If the file name has special constructs in it,
|
|
|
2619 call the corresponding file handler. */
|
|
|
2620 handler = Ffind_file_name_handler (abspath1, Qfile_newer_than_file_p);
|
|
|
2621 if (NILP (handler))
|
|
|
2622 handler = Ffind_file_name_handler (abspath2, Qfile_newer_than_file_p);
|
|
|
2623 UNGCPRO;
|
|
|
2624 if (!NILP (handler))
|
|
|
2625 return call3 (handler, Qfile_newer_than_file_p, abspath1,
|
|
|
2626 abspath2);
|
|
|
2627
|
|
442
|
2628 if (xemacs_stat ((char *) XSTRING_DATA (abspath1), &st) < 0)
|
|
428
|
2629 return Qnil;
|
|
|
2630
|
|
|
2631 mtime1 = st.st_mtime;
|
|
|
2632
|
|
442
|
2633 if (xemacs_stat ((char *) XSTRING_DATA (abspath2), &st) < 0)
|
|
428
|
2634 return Qt;
|
|
|
2635
|
|
|
2636 return (mtime1 > st.st_mtime) ? Qt : Qnil;
|
|
|
2637 }
|
|
|
2638
|
|
|
2639
|
|
|
2640 /* Stack sizes > 2**16 is a good way to elicit compiler bugs */
|
|
|
2641 /* #define READ_BUF_SIZE (2 << 16) */
|
|
|
2642 #define READ_BUF_SIZE (1 << 15)
|
|
|
2643
|
|
|
2644 DEFUN ("insert-file-contents-internal", Finsert_file_contents_internal,
|
|
|
2645 1, 7, 0, /*
|
|
|
2646 Insert contents of file FILENAME after point; no coding-system frobbing.
|
|
|
2647 This function is identical to `insert-file-contents' except for the
|
|
|
2648 handling of the CODESYS and USED-CODESYS arguments under
|
|
|
2649 XEmacs/Mule. (When Mule support is not present, both functions are
|
|
|
2650 identical and ignore the CODESYS and USED-CODESYS arguments.)
|
|
|
2651
|
|
|
2652 If support for Mule exists in this Emacs, the file is decoded according
|
|
|
2653 to CODESYS; if omitted, no conversion happens. If USED-CODESYS is non-nil,
|
|
|
2654 it should be a symbol, and the actual coding system that was used for the
|
|
|
2655 decoding is stored into it. It will in general be different from CODESYS
|
|
|
2656 if CODESYS specifies automatic encoding detection or end-of-line detection.
|
|
|
2657
|
|
444
|
2658 Currently START and END refer to byte positions (as opposed to character
|
|
428
|
2659 positions), even in Mule. (Fixing this is very difficult.)
|
|
|
2660 */
|
|
444
|
2661 (filename, visit, start, end, replace, codesys, used_codesys))
|
|
428
|
2662 {
|
|
|
2663 /* This function can call lisp */
|
|
|
2664 struct stat st;
|
|
|
2665 int fd;
|
|
|
2666 int saverrno = 0;
|
|
|
2667 Charcount inserted = 0;
|
|
|
2668 int speccount;
|
|
|
2669 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
2670 Lisp_Object handler = Qnil, val;
|
|
|
2671 int total;
|
|
|
2672 Bufbyte read_buf[READ_BUF_SIZE];
|
|
|
2673 int mc_count;
|
|
|
2674 struct buffer *buf = current_buffer;
|
|
|
2675 Lisp_Object curbuf;
|
|
|
2676 int not_regular = 0;
|
|
|
2677
|
|
|
2678 if (buf->base_buffer && ! NILP (visit))
|
|
563
|
2679 invalid_operation ("Cannot do file visiting in an indirect buffer", Qunbound);
|
|
428
|
2680
|
|
|
2681 /* No need to call Fbarf_if_buffer_read_only() here.
|
|
|
2682 That's called in begin_multiple_change() or wherever. */
|
|
|
2683
|
|
|
2684 val = Qnil;
|
|
|
2685
|
|
|
2686 /* #### dmoore - should probably check in various places to see if
|
|
|
2687 curbuf was killed and if so signal an error? */
|
|
|
2688
|
|
|
2689 XSETBUFFER (curbuf, buf);
|
|
|
2690
|
|
|
2691 GCPRO5 (filename, val, visit, handler, curbuf);
|
|
|
2692
|
|
|
2693 mc_count = (NILP (replace)) ?
|
|
|
2694 begin_multiple_change (buf, BUF_PT (buf), BUF_PT (buf)) :
|
|
|
2695 begin_multiple_change (buf, BUF_BEG (buf), BUF_Z (buf));
|
|
|
2696
|
|
|
2697 speccount = specpdl_depth (); /* begin_multiple_change also adds
|
|
|
2698 an unwind_protect */
|
|
|
2699
|
|
|
2700 filename = Fexpand_file_name (filename, Qnil);
|
|
|
2701
|
|
|
2702 /* If the file name has special constructs in it,
|
|
|
2703 call the corresponding file handler. */
|
|
|
2704 handler = Ffind_file_name_handler (filename, Qinsert_file_contents);
|
|
|
2705 if (!NILP (handler))
|
|
|
2706 {
|
|
|
2707 val = call6 (handler, Qinsert_file_contents, filename,
|
|
444
|
2708 visit, start, end, replace);
|
|
428
|
2709 goto handled;
|
|
|
2710 }
|
|
|
2711
|
|
|
2712 #ifdef FILE_CODING
|
|
|
2713 if (!NILP (used_codesys))
|
|
|
2714 CHECK_SYMBOL (used_codesys);
|
|
|
2715 #endif
|
|
|
2716
|
|
444
|
2717 if ( (!NILP (start) || !NILP (end)) && !NILP (visit) )
|
|
563
|
2718 invalid_operation ("Attempt to visit less than an entire file", Qunbound);
|
|
428
|
2719
|
|
|
2720 fd = -1;
|
|
|
2721
|
|
442
|
2722 if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) < 0)
|
|
428
|
2723 {
|
|
|
2724 if (fd >= 0) close (fd);
|
|
|
2725 badopen:
|
|
|
2726 if (NILP (visit))
|
|
563
|
2727 report_file_error ("Opening input file", filename);
|
|
428
|
2728 st.st_mtime = -1;
|
|
|
2729 goto notfound;
|
|
|
2730 }
|
|
|
2731
|
|
|
2732 #ifdef S_IFREG
|
|
|
2733 /* Signal an error if we are accessing a non-regular file, with
|
|
444
|
2734 REPLACE, START or END being non-nil. */
|
|
428
|
2735 if (!S_ISREG (st.st_mode))
|
|
|
2736 {
|
|
|
2737 not_regular = 1;
|
|
|
2738
|
|
|
2739 if (!NILP (visit))
|
|
|
2740 goto notfound;
|
|
|
2741
|
|
444
|
2742 if (!NILP (replace) || !NILP (start) || !NILP (end))
|
|
428
|
2743 {
|
|
|
2744 end_multiple_change (buf, mc_count);
|
|
|
2745
|
|
444
|
2746 RETURN_UNGCPRO
|
|
|
2747 (Fsignal (Qfile_error,
|
|
|
2748 list2 (build_translated_string("not a regular file"),
|
|
|
2749 filename)));
|
|
428
|
2750 }
|
|
|
2751 }
|
|
|
2752 #endif /* S_IFREG */
|
|
|
2753
|
|
444
|
2754 if (!NILP (start))
|
|
|
2755 CHECK_INT (start);
|
|
428
|
2756 else
|
|
444
|
2757 start = Qzero;
|
|
428
|
2758
|
|
|
2759 if (!NILP (end))
|
|
|
2760 CHECK_INT (end);
|
|
|
2761
|
|
|
2762 if (fd < 0)
|
|
|
2763 {
|
|
|
2764 if ((fd = interruptible_open ((char *) XSTRING_DATA (filename),
|
|
|
2765 O_RDONLY | OPEN_BINARY, 0)) < 0)
|
|
|
2766 goto badopen;
|
|
|
2767 }
|
|
|
2768
|
|
|
2769 /* Replacement should preserve point as it preserves markers. */
|
|
|
2770 if (!NILP (replace))
|
|
|
2771 record_unwind_protect (restore_point_unwind, Fpoint_marker (Qnil, Qnil));
|
|
|
2772
|
|
|
2773 record_unwind_protect (close_file_unwind, make_int (fd));
|
|
|
2774
|
|
|
2775 /* Supposedly happens on VMS. */
|
|
|
2776 if (st.st_size < 0)
|
|
563
|
2777 signal_error (Qfile_error, "File size is negative", Qunbound);
|
|
428
|
2778
|
|
|
2779 if (NILP (end))
|
|
|
2780 {
|
|
|
2781 if (!not_regular)
|
|
|
2782 {
|
|
|
2783 end = make_int (st.st_size);
|
|
|
2784 if (XINT (end) != st.st_size)
|
|
563
|
2785 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2786 }
|
|
|
2787 }
|
|
|
2788
|
|
|
2789 /* If requested, replace the accessible part of the buffer
|
|
|
2790 with the file contents. Avoid replacing text at the
|
|
|
2791 beginning or end of the buffer that matches the file contents;
|
|
|
2792 that preserves markers pointing to the unchanged parts. */
|
|
|
2793 #if !defined (FILE_CODING)
|
|
|
2794 /* The replace-mode code currently only works when the assumption
|
|
|
2795 'one byte == one char' holds true. This fails Mule because
|
|
|
2796 files may contain multibyte characters. It holds under Windows NT
|
|
|
2797 provided we convert CRLF into LF. */
|
|
|
2798 # define FSFMACS_SPEEDY_INSERT
|
|
|
2799 #endif /* !defined (FILE_CODING) */
|
|
|
2800
|
|
|
2801 #ifndef FSFMACS_SPEEDY_INSERT
|
|
|
2802 if (!NILP (replace))
|
|
|
2803 {
|
|
|
2804 buffer_delete_range (buf, BUF_BEG (buf), BUF_Z (buf),
|
|
|
2805 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2806 }
|
|
|
2807 #else /* FSFMACS_SPEEDY_INSERT */
|
|
|
2808 if (!NILP (replace))
|
|
|
2809 {
|
|
|
2810 char buffer[1 << 14];
|
|
|
2811 Bufpos same_at_start = BUF_BEGV (buf);
|
|
|
2812 Bufpos same_at_end = BUF_ZV (buf);
|
|
|
2813 int overlap;
|
|
|
2814
|
|
|
2815 /* Count how many chars at the start of the file
|
|
|
2816 match the text at the beginning of the buffer. */
|
|
|
2817 while (1)
|
|
|
2818 {
|
|
|
2819 int nread;
|
|
|
2820 Bufpos bufpos;
|
|
647
|
2821 nread = read_allowing_quit (fd, buffer, sizeof (buffer));
|
|
428
|
2822 if (nread < 0)
|
|
563
|
2823 report_file_error ("Reading", filename);
|
|
428
|
2824 else if (nread == 0)
|
|
|
2825 break;
|
|
|
2826 bufpos = 0;
|
|
|
2827 while (bufpos < nread && same_at_start < BUF_ZV (buf)
|
|
|
2828 && BUF_FETCH_CHAR (buf, same_at_start) == buffer[bufpos])
|
|
|
2829 same_at_start++, bufpos++;
|
|
|
2830 /* If we found a discrepancy, stop the scan.
|
|
|
2831 Otherwise loop around and scan the next bufferful. */
|
|
|
2832 if (bufpos != nread)
|
|
|
2833 break;
|
|
|
2834 }
|
|
|
2835 /* If the file matches the buffer completely,
|
|
|
2836 there's no need to replace anything. */
|
|
|
2837 if (same_at_start - BUF_BEGV (buf) == st.st_size)
|
|
|
2838 {
|
|
|
2839 close (fd);
|
|
|
2840 unbind_to (speccount, Qnil);
|
|
|
2841 /* Truncate the buffer to the size of the file. */
|
|
|
2842 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2843 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2844 goto handled;
|
|
|
2845 }
|
|
|
2846 /* Count how many chars at the end of the file
|
|
|
2847 match the text at the end of the buffer. */
|
|
|
2848 while (1)
|
|
|
2849 {
|
|
|
2850 int total_read, nread;
|
|
|
2851 Bufpos bufpos, curpos, trial;
|
|
|
2852
|
|
|
2853 /* At what file position are we now scanning? */
|
|
|
2854 curpos = st.st_size - (BUF_ZV (buf) - same_at_end);
|
|
|
2855 /* If the entire file matches the buffer tail, stop the scan. */
|
|
|
2856 if (curpos == 0)
|
|
|
2857 break;
|
|
|
2858 /* How much can we scan in the next step? */
|
|
|
2859 trial = min (curpos, (Bufpos) sizeof (buffer));
|
|
|
2860 if (lseek (fd, curpos - trial, 0) < 0)
|
|
563
|
2861 report_file_error ("Setting file position", filename);
|
|
428
|
2862
|
|
|
2863 total_read = 0;
|
|
|
2864 while (total_read < trial)
|
|
|
2865 {
|
|
|
2866 nread = read_allowing_quit (fd, buffer + total_read,
|
|
|
2867 trial - total_read);
|
|
|
2868 if (nread <= 0)
|
|
563
|
2869 report_file_error ("IO error reading file", filename);
|
|
428
|
2870 total_read += nread;
|
|
|
2871 }
|
|
|
2872 /* Scan this bufferful from the end, comparing with
|
|
|
2873 the Emacs buffer. */
|
|
|
2874 bufpos = total_read;
|
|
|
2875 /* Compare with same_at_start to avoid counting some buffer text
|
|
|
2876 as matching both at the file's beginning and at the end. */
|
|
|
2877 while (bufpos > 0 && same_at_end > same_at_start
|
|
|
2878 && BUF_FETCH_CHAR (buf, same_at_end - 1) ==
|
|
|
2879 buffer[bufpos - 1])
|
|
|
2880 same_at_end--, bufpos--;
|
|
|
2881 /* If we found a discrepancy, stop the scan.
|
|
|
2882 Otherwise loop around and scan the preceding bufferful. */
|
|
|
2883 if (bufpos != 0)
|
|
|
2884 break;
|
|
|
2885 /* If display current starts at beginning of line,
|
|
|
2886 keep it that way. */
|
|
|
2887 if (XBUFFER (XWINDOW (Fselected_window (Qnil))->buffer) == buf)
|
|
|
2888 XWINDOW (Fselected_window (Qnil))->start_at_line_beg =
|
|
|
2889 !NILP (Fbolp (make_buffer (buf)));
|
|
|
2890 }
|
|
|
2891
|
|
|
2892 /* Don't try to reuse the same piece of text twice. */
|
|
|
2893 overlap = same_at_start - BUF_BEGV (buf) -
|
|
|
2894 (same_at_end + st.st_size - BUF_ZV (buf));
|
|
|
2895 if (overlap > 0)
|
|
|
2896 same_at_end += overlap;
|
|
|
2897
|
|
|
2898 /* Arrange to read only the nonmatching middle part of the file. */
|
|
444
|
2899 start = make_int (same_at_start - BUF_BEGV (buf));
|
|
428
|
2900 end = make_int (st.st_size - (BUF_ZV (buf) - same_at_end));
|
|
|
2901
|
|
|
2902 buffer_delete_range (buf, same_at_start, same_at_end,
|
|
|
2903 !NILP (visit) ? INSDEL_NO_LOCKING : 0);
|
|
|
2904 /* Insert from the file at the proper position. */
|
|
|
2905 BUF_SET_PT (buf, same_at_start);
|
|
|
2906 }
|
|
|
2907 #endif /* FSFMACS_SPEEDY_INSERT */
|
|
|
2908
|
|
|
2909 if (!not_regular)
|
|
|
2910 {
|
|
444
|
2911 total = XINT (end) - XINT (start);
|
|
428
|
2912
|
|
|
2913 /* Make sure point-max won't overflow after this insertion. */
|
|
|
2914 if (total != XINT (make_int (total)))
|
|
563
|
2915 out_of_memory ("Maximum buffer size exceeded", Qunbound);
|
|
428
|
2916 }
|
|
|
2917 else
|
|
|
2918 /* For a special file, all we can do is guess. The value of -1
|
|
|
2919 will make the stream functions read as much as possible. */
|
|
|
2920 total = -1;
|
|
|
2921
|
|
444
|
2922 if (XINT (start) != 0
|
|
428
|
2923 #ifdef FSFMACS_SPEEDY_INSERT
|
|
|
2924 /* why was this here? asked jwz. The reason is that the replace-mode
|
|
|
2925 connivings above will normally put the file pointer other than
|
|
|
2926 where it should be. */
|
|
|
2927 || !NILP (replace)
|
|
|
2928 #endif /* !FSFMACS_SPEEDY_INSERT */
|
|
|
2929 )
|
|
|
2930 {
|
|
444
|
2931 if (lseek (fd, XINT (start), 0) < 0)
|
|
563
|
2932 report_file_error ("Setting file position", filename);
|
|
428
|
2933 }
|
|
|
2934
|
|
|
2935 {
|
|
|
2936 Bufpos cur_point = BUF_PT (buf);
|
|
|
2937 struct gcpro ngcpro1;
|
|
|
2938 Lisp_Object stream = make_filedesc_input_stream (fd, 0, total,
|
|
|
2939 LSTR_ALLOW_QUIT);
|
|
|
2940
|
|
|
2941 NGCPRO1 (stream);
|
|
|
2942 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2943 #ifdef FILE_CODING
|
|
|
2944 stream = make_decoding_input_stream
|
|
|
2945 (XLSTREAM (stream), Fget_coding_system (codesys));
|
|
|
2946 Lstream_set_character_mode (XLSTREAM (stream));
|
|
|
2947 Lstream_set_buffering (XLSTREAM (stream), LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
2948 #endif /* FILE_CODING */
|
|
|
2949
|
|
|
2950 record_unwind_protect (delete_stream_unwind, stream);
|
|
|
2951
|
|
|
2952 /* No need to limit the amount of stuff we attempt to read. (It would
|
|
|
2953 be incorrect, anyway, when Mule is enabled.) Instead, the limiting
|
|
|
2954 occurs inside of the filedesc stream. */
|
|
|
2955 while (1)
|
|
|
2956 {
|
|
647
|
2957 Lstream_Data_Count this_len;
|
|
428
|
2958 Charcount cc_inserted;
|
|
|
2959
|
|
|
2960 QUIT;
|
|
|
2961 this_len = Lstream_read (XLSTREAM (stream), read_buf,
|
|
|
2962 sizeof (read_buf));
|
|
|
2963
|
|
|
2964 if (this_len <= 0)
|
|
|
2965 {
|
|
|
2966 if (this_len < 0)
|
|
|
2967 saverrno = errno;
|
|
|
2968 break;
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 cc_inserted = buffer_insert_raw_string_1 (buf, cur_point, read_buf,
|
|
|
2972 this_len,
|
|
|
2973 !NILP (visit)
|
|
|
2974 ? INSDEL_NO_LOCKING : 0);
|
|
|
2975 inserted += cc_inserted;
|
|
|
2976 cur_point += cc_inserted;
|
|
|
2977 }
|
|
|
2978 #ifdef FILE_CODING
|
|
|
2979 if (!NILP (used_codesys))
|
|
|
2980 {
|
|
|
2981 Fset (used_codesys,
|
|
|
2982 XCODING_SYSTEM_NAME (decoding_stream_coding_system (XLSTREAM (stream))));
|
|
|
2983 }
|
|
|
2984 #endif /* FILE_CODING */
|
|
|
2985 NUNGCPRO;
|
|
|
2986 }
|
|
|
2987
|
|
|
2988 /* Close the file/stream */
|
|
|
2989 unbind_to (speccount, Qnil);
|
|
|
2990
|
|
|
2991 if (saverrno != 0)
|
|
|
2992 {
|
|
563
|
2993 errno = saverrno;
|
|
|
2994 report_file_error ("Reading", filename);
|
|
428
|
2995 }
|
|
|
2996
|
|
|
2997 notfound:
|
|
|
2998 handled:
|
|
|
2999
|
|
|
3000 end_multiple_change (buf, mc_count);
|
|
|
3001
|
|
|
3002 if (!NILP (visit))
|
|
|
3003 {
|
|
|
3004 if (!EQ (buf->undo_list, Qt))
|
|
|
3005 buf->undo_list = Qnil;
|
|
|
3006 if (NILP (handler))
|
|
|
3007 {
|
|
|
3008 buf->modtime = st.st_mtime;
|
|
|
3009 buf->filename = filename;
|
|
|
3010 /* XEmacs addition: */
|
|
|
3011 /* This function used to be in C, ostensibly so that
|
|
|
3012 it could be called here. But that's just silly.
|
|
|
3013 There's no reason C code can't call out to Lisp
|
|
|
3014 code, and it's a lot cleaner this way. */
|
|
444
|
3015 /* Note: compute-buffer-file-truename is called for
|
|
|
3016 side-effect! Its return value is intentionally
|
|
|
3017 ignored. */
|
|
428
|
3018 if (!NILP (Ffboundp (Qcompute_buffer_file_truename)))
|
|
|
3019 call1 (Qcompute_buffer_file_truename, make_buffer (buf));
|
|
|
3020 }
|
|
|
3021 BUF_SAVE_MODIFF (buf) = BUF_MODIFF (buf);
|
|
|
3022 buf->auto_save_modified = BUF_MODIFF (buf);
|
|
|
3023 buf->saved_size = make_int (BUF_SIZE (buf));
|
|
|
3024 #ifdef CLASH_DETECTION
|
|
|
3025 if (NILP (handler))
|
|
|
3026 {
|
|
|
3027 if (!NILP (buf->file_truename))
|
|
|
3028 unlock_file (buf->file_truename);
|
|
|
3029 unlock_file (filename);
|
|
|
3030 }
|
|
|
3031 #endif /* CLASH_DETECTION */
|
|
|
3032 if (not_regular)
|
|
|
3033 RETURN_UNGCPRO (Fsignal (Qfile_error,
|
|
|
3034 list2 (build_string ("not a regular file"),
|
|
|
3035 filename)));
|
|
|
3036
|
|
|
3037 /* If visiting nonexistent file, return nil. */
|
|
|
3038 if (buf->modtime == -1)
|
|
|
3039 report_file_error ("Opening input file",
|
|
563
|
3040 filename);
|
|
428
|
3041 }
|
|
|
3042
|
|
|
3043 /* Decode file format */
|
|
|
3044 if (inserted > 0)
|
|
|
3045 {
|
|
|
3046 Lisp_Object insval = call3 (Qformat_decode,
|
|
|
3047 Qnil, make_int (inserted), visit);
|
|
|
3048 CHECK_INT (insval);
|
|
|
3049 inserted = XINT (insval);
|
|
|
3050 }
|
|
|
3051
|
|
|
3052 if (inserted > 0)
|
|
|
3053 {
|
|
|
3054 Lisp_Object p;
|
|
|
3055 struct gcpro ngcpro1;
|
|
|
3056
|
|
|
3057 NGCPRO1 (p);
|
|
|
3058 EXTERNAL_LIST_LOOP (p, Vafter_insert_file_functions)
|
|
|
3059 {
|
|
|
3060 Lisp_Object insval =
|
|
|
3061 call1 (XCAR (p), make_int (inserted));
|
|
|
3062 if (!NILP (insval))
|
|
|
3063 {
|
|
|
3064 CHECK_NATNUM (insval);
|
|
|
3065 inserted = XINT (insval);
|
|
|
3066 }
|
|
|
3067 QUIT;
|
|
|
3068 }
|
|
|
3069 NUNGCPRO;
|
|
|
3070 }
|
|
|
3071
|
|
|
3072 UNGCPRO;
|
|
|
3073
|
|
|
3074 if (!NILP (val))
|
|
|
3075 return (val);
|
|
|
3076 else
|
|
|
3077 return (list2 (filename, make_int (inserted)));
|
|
|
3078 }
|
|
|
3079
|
|
|
3080
|
|
|
3081 static int a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3082 Lisp_Object *annot);
|
|
|
3083 static Lisp_Object build_annotations (Lisp_Object start, Lisp_Object end);
|
|
|
3084
|
|
|
3085 /* If build_annotations switched buffers, switch back to BUF.
|
|
|
3086 Kill the temporary buffer that was selected in the meantime. */
|
|
|
3087
|
|
|
3088 static Lisp_Object
|
|
|
3089 build_annotations_unwind (Lisp_Object buf)
|
|
|
3090 {
|
|
|
3091 Lisp_Object tembuf;
|
|
|
3092
|
|
|
3093 if (XBUFFER (buf) == current_buffer)
|
|
|
3094 return Qnil;
|
|
|
3095 tembuf = Fcurrent_buffer ();
|
|
|
3096 Fset_buffer (buf);
|
|
|
3097 Fkill_buffer (tembuf);
|
|
|
3098 return Qnil;
|
|
|
3099 }
|
|
|
3100
|
|
|
3101 DEFUN ("write-region-internal", Fwrite_region_internal, 3, 7,
|
|
|
3102 "r\nFWrite region to file: ", /*
|
|
|
3103 Write current region into specified file; no coding-system frobbing.
|
|
|
3104 This function is identical to `write-region' except for the handling
|
|
|
3105 of the CODESYS argument under XEmacs/Mule. (When Mule support is not
|
|
|
3106 present, both functions are identical and ignore the CODESYS argument.)
|
|
|
3107 If support for Mule exists in this Emacs, the file is encoded according
|
|
|
3108 to the value of CODESYS. If this is nil, no code conversion occurs.
|
|
|
3109 */
|
|
|
3110 (start, end, filename, append, visit, lockname, codesys))
|
|
|
3111 {
|
|
442
|
3112 /* This function can call lisp. GC checked 2000-07-28 ben */
|
|
428
|
3113 int desc;
|
|
|
3114 int failure;
|
|
|
3115 int save_errno = 0;
|
|
|
3116 struct stat st;
|
|
442
|
3117 Lisp_Object fn = Qnil;
|
|
428
|
3118 int speccount = specpdl_depth ();
|
|
|
3119 int visiting_other = STRINGP (visit);
|
|
|
3120 int visiting = (EQ (visit, Qt) || visiting_other);
|
|
|
3121 int quietly = (!visiting && !NILP (visit));
|
|
|
3122 Lisp_Object visit_file = Qnil;
|
|
|
3123 Lisp_Object annotations = Qnil;
|
|
|
3124 struct buffer *given_buffer;
|
|
|
3125 Bufpos start1, end1;
|
|
442
|
3126 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5;
|
|
|
3127 struct gcpro ngcpro1, ngcpro2;
|
|
|
3128 Lisp_Object curbuf;
|
|
|
3129
|
|
|
3130 XSETBUFFER (curbuf, current_buffer);
|
|
|
3131
|
|
|
3132 /* start, end, visit, and append are never modified in this fun
|
|
|
3133 so we don't protect them. */
|
|
|
3134 GCPRO5 (visit_file, filename, codesys, lockname, annotations);
|
|
|
3135 NGCPRO2 (curbuf, fn);
|
|
|
3136
|
|
|
3137 /* [[ dmoore - if Fexpand_file_name or handlers kill the buffer,
|
|
428
|
3138 we should signal an error rather than blissfully continuing
|
|
|
3139 along. ARGH, this function is going to lose lose lose. We need
|
|
|
3140 to protect the current_buffer from being destroyed, but the
|
|
442
|
3141 multiple return points make this a pain in the butt. ]] we do
|
|
|
3142 protect curbuf now. --ben */
|
|
428
|
3143
|
|
|
3144 #ifdef FILE_CODING
|
|
|
3145 codesys = Fget_coding_system (codesys);
|
|
|
3146 #endif /* FILE_CODING */
|
|
|
3147
|
|
|
3148 if (current_buffer->base_buffer && ! NILP (visit))
|
|
442
|
3149 invalid_operation ("Cannot do file visiting in an indirect buffer",
|
|
|
3150 curbuf);
|
|
428
|
3151
|
|
|
3152 if (!NILP (start) && !STRINGP (start))
|
|
|
3153 get_buffer_range_char (current_buffer, start, end, &start1, &end1, 0);
|
|
|
3154
|
|
|
3155 {
|
|
|
3156 Lisp_Object handler;
|
|
|
3157
|
|
|
3158 if (visiting_other)
|
|
|
3159 visit_file = Fexpand_file_name (visit, Qnil);
|
|
|
3160 else
|
|
|
3161 visit_file = filename;
|
|
|
3162 filename = Fexpand_file_name (filename, Qnil);
|
|
|
3163
|
|
|
3164 if (NILP (lockname))
|
|
|
3165 lockname = visit_file;
|
|
|
3166
|
|
442
|
3167 /* We used to UNGCPRO here. BAD! visit_file is used below after
|
|
|
3168 more Lisp calling. */
|
|
428
|
3169 /* If the file name has special constructs in it,
|
|
|
3170 call the corresponding file handler. */
|
|
|
3171 handler = Ffind_file_name_handler (filename, Qwrite_region);
|
|
|
3172 /* If FILENAME has no handler, see if VISIT has one. */
|
|
|
3173 if (NILP (handler) && STRINGP (visit))
|
|
|
3174 handler = Ffind_file_name_handler (visit, Qwrite_region);
|
|
|
3175
|
|
|
3176 if (!NILP (handler))
|
|
|
3177 {
|
|
|
3178 Lisp_Object val = call8 (handler, Qwrite_region, start, end,
|
|
|
3179 filename, append, visit, lockname, codesys);
|
|
|
3180 if (visiting)
|
|
|
3181 {
|
|
|
3182 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3183 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3184 current_buffer->filename = visit_file;
|
|
|
3185 MARK_MODELINE_CHANGED;
|
|
|
3186 }
|
|
442
|
3187 NUNGCPRO;
|
|
|
3188 UNGCPRO;
|
|
428
|
3189 return val;
|
|
|
3190 }
|
|
|
3191 }
|
|
|
3192
|
|
|
3193 #ifdef CLASH_DETECTION
|
|
|
3194 if (!auto_saving)
|
|
442
|
3195 lock_file (lockname);
|
|
428
|
3196 #endif /* CLASH_DETECTION */
|
|
|
3197
|
|
|
3198 /* Special kludge to simplify auto-saving. */
|
|
|
3199 if (NILP (start))
|
|
|
3200 {
|
|
|
3201 start1 = BUF_BEG (current_buffer);
|
|
|
3202 end1 = BUF_Z (current_buffer);
|
|
|
3203 }
|
|
|
3204
|
|
|
3205 record_unwind_protect (build_annotations_unwind, Fcurrent_buffer ());
|
|
|
3206
|
|
|
3207 given_buffer = current_buffer;
|
|
|
3208 annotations = build_annotations (start, end);
|
|
|
3209 if (current_buffer != given_buffer)
|
|
|
3210 {
|
|
|
3211 start1 = BUF_BEGV (current_buffer);
|
|
|
3212 end1 = BUF_ZV (current_buffer);
|
|
|
3213 }
|
|
|
3214
|
|
|
3215 fn = filename;
|
|
|
3216 desc = -1;
|
|
|
3217 if (!NILP (append))
|
|
|
3218 {
|
|
|
3219 desc = open ((char *) XSTRING_DATA (fn), O_WRONLY | OPEN_BINARY, 0);
|
|
|
3220 }
|
|
|
3221 if (desc < 0)
|
|
|
3222 {
|
|
|
3223 desc = open ((char *) XSTRING_DATA (fn),
|
|
442
|
3224 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3225 auto_saving ? auto_save_mode_bits : CREAT_MODE);
|
|
428
|
3226 }
|
|
|
3227
|
|
|
3228 if (desc < 0)
|
|
|
3229 {
|
|
|
3230 #ifdef CLASH_DETECTION
|
|
|
3231 save_errno = errno;
|
|
|
3232 if (!auto_saving) unlock_file (lockname);
|
|
|
3233 errno = save_errno;
|
|
|
3234 #endif /* CLASH_DETECTION */
|
|
563
|
3235 report_file_error ("Opening output file", filename);
|
|
428
|
3236 }
|
|
|
3237
|
|
|
3238 {
|
|
|
3239 Lisp_Object desc_locative = Fcons (make_int (desc), Qnil);
|
|
|
3240 Lisp_Object instream = Qnil, outstream = Qnil;
|
|
442
|
3241 struct gcpro nngcpro1, nngcpro2;
|
|
428
|
3242 /* need to gcpro; QUIT could happen out of call to write() */
|
|
442
|
3243 NNGCPRO2 (instream, outstream);
|
|
428
|
3244
|
|
|
3245 record_unwind_protect (close_file_unwind, desc_locative);
|
|
|
3246
|
|
|
3247 if (!NILP (append))
|
|
|
3248 {
|
|
|
3249 if (lseek (desc, 0, 2) < 0)
|
|
|
3250 {
|
|
|
3251 #ifdef CLASH_DETECTION
|
|
|
3252 if (!auto_saving) unlock_file (lockname);
|
|
|
3253 #endif /* CLASH_DETECTION */
|
|
|
3254 report_file_error ("Lseek error",
|
|
563
|
3255 filename);
|
|
428
|
3256 }
|
|
|
3257 }
|
|
|
3258
|
|
|
3259 failure = 0;
|
|
|
3260
|
|
|
3261 /* Note: I tried increasing the buffering size, along with
|
|
|
3262 various other tricks, but nothing seemed to make much of
|
|
|
3263 a difference in the time it took to save a large file.
|
|
|
3264 (Actually that's not true. With a local disk, changing
|
|
|
3265 the buffer size doesn't seem to make much difference.
|
|
|
3266 With an NFS-mounted disk, it could make a lot of difference
|
|
|
3267 because you're affecting the number of network requests
|
|
|
3268 that need to be made, and there could be a large latency
|
|
|
3269 for each request. So I've increased the buffer size
|
|
|
3270 to 64K.) */
|
|
|
3271 outstream = make_filedesc_output_stream (desc, 0, -1, 0);
|
|
|
3272 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3273 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3274 #ifdef FILE_CODING
|
|
|
3275 outstream =
|
|
|
3276 make_encoding_output_stream (XLSTREAM (outstream), codesys);
|
|
|
3277 Lstream_set_buffering (XLSTREAM (outstream),
|
|
|
3278 LSTREAM_BLOCKN_BUFFERED, 65536);
|
|
|
3279 #endif /* FILE_CODING */
|
|
|
3280 if (STRINGP (start))
|
|
|
3281 {
|
|
|
3282 instream = make_lisp_string_input_stream (start, 0, -1);
|
|
|
3283 start1 = 0;
|
|
|
3284 }
|
|
|
3285 else
|
|
|
3286 instream = make_lisp_buffer_input_stream (current_buffer, start1, end1,
|
|
|
3287 LSTR_SELECTIVE |
|
|
|
3288 LSTR_IGNORE_ACCESSIBLE);
|
|
|
3289 failure = (0 > (a_write (outstream, instream, start1,
|
|
|
3290 &annotations)));
|
|
|
3291 save_errno = errno;
|
|
|
3292 /* Note that this doesn't close the desc since we created the
|
|
|
3293 stream without the LSTR_CLOSING flag, but it does
|
|
|
3294 flush out any buffered data. */
|
|
|
3295 if (Lstream_close (XLSTREAM (outstream)) < 0)
|
|
|
3296 {
|
|
|
3297 failure = 1;
|
|
|
3298 save_errno = errno;
|
|
|
3299 }
|
|
|
3300 Lstream_close (XLSTREAM (instream));
|
|
|
3301
|
|
|
3302 #ifdef HAVE_FSYNC
|
|
|
3303 /* Note fsync appears to change the modtime on BSD4.2 (both vax and sun).
|
|
|
3304 Disk full in NFS may be reported here. */
|
|
|
3305 /* mib says that closing the file will try to write as fast as NFS can do
|
|
|
3306 it, and that means the fsync here is not crucial for autosave files. */
|
|
|
3307 if (!auto_saving && fsync (desc) < 0
|
|
|
3308 /* If fsync fails with EINTR, don't treat that as serious. */
|
|
|
3309 && errno != EINTR)
|
|
|
3310 {
|
|
|
3311 failure = 1;
|
|
|
3312 save_errno = errno;
|
|
|
3313 }
|
|
|
3314 #endif /* HAVE_FSYNC */
|
|
|
3315
|
|
440
|
3316 /* Spurious "file has changed on disk" warnings used to be seen on
|
|
|
3317 systems where close() can change the modtime. This is known to
|
|
|
3318 happen on various NFS file systems, on Windows, and on Linux.
|
|
|
3319 Rather than handling this on a per-system basis, we
|
|
442
|
3320 unconditionally do the xemacs_stat() after the close(). */
|
|
428
|
3321
|
|
|
3322 /* NFS can report a write failure now. */
|
|
|
3323 if (close (desc) < 0)
|
|
|
3324 {
|
|
|
3325 failure = 1;
|
|
|
3326 save_errno = errno;
|
|
|
3327 }
|
|
|
3328
|
|
|
3329 /* Discard the close unwind-protect. Execute the one for
|
|
|
3330 build_annotations (switches back to the original current buffer
|
|
|
3331 as necessary). */
|
|
|
3332 XCAR (desc_locative) = Qnil;
|
|
|
3333 unbind_to (speccount, Qnil);
|
|
442
|
3334
|
|
|
3335 NNUNGCPRO;
|
|
428
|
3336 }
|
|
|
3337
|
|
442
|
3338 xemacs_stat ((char *) XSTRING_DATA (fn), &st);
|
|
428
|
3339
|
|
|
3340 #ifdef CLASH_DETECTION
|
|
|
3341 if (!auto_saving)
|
|
|
3342 unlock_file (lockname);
|
|
|
3343 #endif /* CLASH_DETECTION */
|
|
|
3344
|
|
|
3345 /* Do this before reporting IO error
|
|
|
3346 to avoid a "file has changed on disk" warning on
|
|
|
3347 next attempt to save. */
|
|
|
3348 if (visiting)
|
|
|
3349 current_buffer->modtime = st.st_mtime;
|
|
|
3350
|
|
|
3351 if (failure)
|
|
442
|
3352 {
|
|
|
3353 errno = save_errno;
|
|
563
|
3354 report_file_error ("Writing file", fn);
|
|
442
|
3355 }
|
|
428
|
3356
|
|
|
3357 if (visiting)
|
|
|
3358 {
|
|
|
3359 BUF_SAVE_MODIFF (current_buffer) = BUF_MODIFF (current_buffer);
|
|
|
3360 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
3361 current_buffer->filename = visit_file;
|
|
|
3362 MARK_MODELINE_CHANGED;
|
|
|
3363 }
|
|
|
3364 else if (quietly)
|
|
|
3365 {
|
|
442
|
3366 NUNGCPRO;
|
|
|
3367 UNGCPRO;
|
|
428
|
3368 return Qnil;
|
|
|
3369 }
|
|
|
3370
|
|
|
3371 if (!auto_saving)
|
|
|
3372 {
|
|
|
3373 if (visiting_other)
|
|
|
3374 message ("Wrote %s", XSTRING_DATA (visit_file));
|
|
|
3375 else
|
|
|
3376 {
|
|
446
|
3377 Lisp_Object fsp = Qnil;
|
|
442
|
3378 struct gcpro nngcpro1;
|
|
|
3379
|
|
|
3380 NNGCPRO1 (fsp);
|
|
428
|
3381 fsp = Ffile_symlink_p (fn);
|
|
|
3382 if (NILP (fsp))
|
|
|
3383 message ("Wrote %s", XSTRING_DATA (fn));
|
|
|
3384 else
|
|
|
3385 message ("Wrote %s (symlink to %s)",
|
|
|
3386 XSTRING_DATA (fn), XSTRING_DATA (fsp));
|
|
442
|
3387 NNUNGCPRO;
|
|
428
|
3388 }
|
|
|
3389 }
|
|
442
|
3390 NUNGCPRO;
|
|
|
3391 UNGCPRO;
|
|
428
|
3392 return Qnil;
|
|
|
3393 }
|
|
|
3394
|
|
|
3395 /* #### This is such a load of shit!!!! There is no way we should define
|
|
|
3396 something so stupid as a subr, just sort the fucking list more
|
|
|
3397 intelligently. */
|
|
|
3398 DEFUN ("car-less-than-car", Fcar_less_than_car, 2, 2, 0, /*
|
|
|
3399 Return t if (car A) is numerically less than (car B).
|
|
|
3400 */
|
|
|
3401 (a, b))
|
|
|
3402 {
|
|
|
3403 Lisp_Object objs[2];
|
|
|
3404 objs[0] = Fcar (a);
|
|
|
3405 objs[1] = Fcar (b);
|
|
|
3406 return Flss (2, objs);
|
|
|
3407 }
|
|
|
3408
|
|
|
3409 /* Heh heh heh, let's define this too, just to aggravate the person who
|
|
|
3410 wrote the above comment. */
|
|
|
3411 DEFUN ("cdr-less-than-cdr", Fcdr_less_than_cdr, 2, 2, 0, /*
|
|
|
3412 Return t if (cdr A) is numerically less than (cdr B).
|
|
|
3413 */
|
|
|
3414 (a, b))
|
|
|
3415 {
|
|
|
3416 Lisp_Object objs[2];
|
|
|
3417 objs[0] = Fcdr (a);
|
|
|
3418 objs[1] = Fcdr (b);
|
|
|
3419 return Flss (2, objs);
|
|
|
3420 }
|
|
|
3421
|
|
|
3422 /* Build the complete list of annotations appropriate for writing out
|
|
|
3423 the text between START and END, by calling all the functions in
|
|
|
3424 write-region-annotate-functions and merging the lists they return.
|
|
|
3425 If one of these functions switches to a different buffer, we assume
|
|
|
3426 that buffer contains altered text. Therefore, the caller must
|
|
|
3427 make sure to restore the current buffer in all cases,
|
|
|
3428 as save-excursion would do. */
|
|
|
3429
|
|
|
3430 static Lisp_Object
|
|
|
3431 build_annotations (Lisp_Object start, Lisp_Object end)
|
|
|
3432 {
|
|
|
3433 /* This function can GC */
|
|
|
3434 Lisp_Object annotations;
|
|
|
3435 Lisp_Object p, res;
|
|
|
3436 struct gcpro gcpro1, gcpro2;
|
|
|
3437 Lisp_Object original_buffer;
|
|
|
3438
|
|
|
3439 XSETBUFFER (original_buffer, current_buffer);
|
|
|
3440
|
|
|
3441 annotations = Qnil;
|
|
|
3442 p = Vwrite_region_annotate_functions;
|
|
|
3443 GCPRO2 (annotations, p);
|
|
|
3444 while (!NILP (p))
|
|
|
3445 {
|
|
|
3446 struct buffer *given_buffer = current_buffer;
|
|
|
3447 Vwrite_region_annotations_so_far = annotations;
|
|
|
3448 res = call2 (Fcar (p), start, end);
|
|
|
3449 /* If the function makes a different buffer current,
|
|
|
3450 assume that means this buffer contains altered text to be output.
|
|
|
3451 Reset START and END from the buffer bounds
|
|
|
3452 and discard all previous annotations because they should have
|
|
|
3453 been dealt with by this function. */
|
|
|
3454 if (current_buffer != given_buffer)
|
|
|
3455 {
|
|
|
3456 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3457 end = make_int (BUF_ZV (current_buffer));
|
|
|
3458 annotations = Qnil;
|
|
|
3459 }
|
|
|
3460 Flength (res); /* Check basic validity of return value */
|
|
|
3461 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3462 p = Fcdr (p);
|
|
|
3463 }
|
|
|
3464
|
|
|
3465 /* Now do the same for annotation functions implied by the file-format */
|
|
|
3466 if (auto_saving && (!EQ (Vauto_save_file_format, Qt)))
|
|
|
3467 p = Vauto_save_file_format;
|
|
|
3468 else
|
|
|
3469 p = current_buffer->file_format;
|
|
|
3470 while (!NILP (p))
|
|
|
3471 {
|
|
|
3472 struct buffer *given_buffer = current_buffer;
|
|
|
3473 Vwrite_region_annotations_so_far = annotations;
|
|
|
3474 res = call4 (Qformat_annotate_function, Fcar (p), start, end,
|
|
|
3475 original_buffer);
|
|
|
3476 if (current_buffer != given_buffer)
|
|
|
3477 {
|
|
|
3478 start = make_int (BUF_BEGV (current_buffer));
|
|
|
3479 end = make_int (BUF_ZV (current_buffer));
|
|
|
3480 annotations = Qnil;
|
|
|
3481 }
|
|
|
3482 Flength (res);
|
|
|
3483 annotations = merge (annotations, res, Qcar_less_than_car);
|
|
|
3484 p = Fcdr (p);
|
|
|
3485 }
|
|
|
3486 UNGCPRO;
|
|
|
3487 return annotations;
|
|
|
3488 }
|
|
|
3489
|
|
|
3490 /* Write to stream OUTSTREAM the characters from INSTREAM (it is read until
|
|
|
3491 EOF is encountered), assuming they start at position POS in the buffer
|
|
|
3492 of string that STREAM refers to. Intersperse with them the annotations
|
|
|
3493 from *ANNOT that fall into the range of positions we are reading from,
|
|
|
3494 each at its appropriate position.
|
|
|
3495
|
|
|
3496 Modify *ANNOT by discarding elements as we output them.
|
|
|
3497 The return value is negative in case of system call failure. */
|
|
|
3498
|
|
|
3499 /* 4K should probably be fine. We just need to reduce the number of
|
|
|
3500 function calls to reasonable level. The Lstream stuff itself will
|
|
|
3501 batch to 64K to reduce the number of system calls. */
|
|
|
3502
|
|
|
3503 #define A_WRITE_BATCH_SIZE 4096
|
|
|
3504
|
|
|
3505 static int
|
|
|
3506 a_write (Lisp_Object outstream, Lisp_Object instream, int pos,
|
|
|
3507 Lisp_Object *annot)
|
|
|
3508 {
|
|
|
3509 Lisp_Object tem;
|
|
|
3510 int nextpos;
|
|
|
3511 unsigned char largebuf[A_WRITE_BATCH_SIZE];
|
|
|
3512 Lstream *instr = XLSTREAM (instream);
|
|
|
3513 Lstream *outstr = XLSTREAM (outstream);
|
|
|
3514
|
|
|
3515 while (LISTP (*annot))
|
|
|
3516 {
|
|
|
3517 tem = Fcar_safe (Fcar (*annot));
|
|
|
3518 if (INTP (tem))
|
|
|
3519 nextpos = XINT (tem);
|
|
|
3520 else
|
|
|
3521 nextpos = INT_MAX;
|
|
|
3522 #ifdef MULE
|
|
|
3523 /* If there are annotations left and we have Mule, then we
|
|
|
3524 have to do the I/O one emchar at a time so we can
|
|
|
3525 determine when to insert the annotation. */
|
|
|
3526 if (!NILP (*annot))
|
|
|
3527 {
|
|
|
3528 Emchar ch;
|
|
|
3529 while (pos != nextpos && (ch = Lstream_get_emchar (instr)) != EOF)
|
|
|
3530 {
|
|
|
3531 if (Lstream_put_emchar (outstr, ch) < 0)
|
|
|
3532 return -1;
|
|
|
3533 pos++;
|
|
|
3534 }
|
|
|
3535 }
|
|
|
3536 else
|
|
|
3537 #endif /* MULE */
|
|
|
3538 {
|
|
|
3539 while (pos != nextpos)
|
|
|
3540 {
|
|
|
3541 /* Otherwise there is no point to that. Just go in batches. */
|
|
|
3542 int chunk = min (nextpos - pos, A_WRITE_BATCH_SIZE);
|
|
|
3543
|
|
|
3544 chunk = Lstream_read (instr, largebuf, chunk);
|
|
|
3545 if (chunk < 0)
|
|
|
3546 return -1;
|
|
|
3547 if (chunk == 0) /* EOF */
|
|
|
3548 break;
|
|
|
3549 if (Lstream_write (outstr, largebuf, chunk) < chunk)
|
|
|
3550 return -1;
|
|
|
3551 pos += chunk;
|
|
|
3552 }
|
|
|
3553 }
|
|
|
3554 if (pos == nextpos)
|
|
|
3555 {
|
|
|
3556 tem = Fcdr (Fcar (*annot));
|
|
|
3557 if (STRINGP (tem))
|
|
|
3558 {
|
|
|
3559 if (Lstream_write (outstr, XSTRING_DATA (tem),
|
|
|
3560 XSTRING_LENGTH (tem)) < 0)
|
|
|
3561 return -1;
|
|
|
3562 }
|
|
|
3563 *annot = Fcdr (*annot);
|
|
|
3564 }
|
|
|
3565 else
|
|
|
3566 return 0;
|
|
|
3567 }
|
|
|
3568 return -1;
|
|
|
3569 }
|
|
|
3570
|
|
|
3571
|
|
|
3572
|
|
|
3573 #if 0
|
|
|
3574 #include <des_crypt.h>
|
|
|
3575
|
|
|
3576 #define CRYPT_BLOCK_SIZE 8 /* bytes */
|
|
|
3577 #define CRYPT_KEY_SIZE 8 /* bytes */
|
|
|
3578
|
|
|
3579 DEFUN ("encrypt-string", Fencrypt_string, 2, 2, 0, /*
|
|
|
3580 Encrypt STRING using KEY.
|
|
|
3581 */
|
|
|
3582 (string, key))
|
|
|
3583 {
|
|
|
3584 char *encrypted_string, *raw_key;
|
|
|
3585 int rounded_size, extra, key_size;
|
|
|
3586
|
|
|
3587 /* !!#### May produce bogus data under Mule. */
|
|
|
3588 CHECK_STRING (string);
|
|
|
3589 CHECK_STRING (key);
|
|
|
3590
|
|
|
3591 extra = XSTRING_LENGTH (string) % CRYPT_BLOCK_SIZE;
|
|
|
3592 rounded_size = XSTRING_LENGTH (string) + extra;
|
|
|
3593 encrypted_string = alloca (rounded_size + 1);
|
|
|
3594 memcpy (encrypted_string, XSTRING_DATA (string), XSTRING_LENGTH (string));
|
|
|
3595 memset (encrypted_string + rounded_size - extra, 0, extra + 1);
|
|
|
3596
|
|
|
3597 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3598
|
|
|
3599 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3600 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3601 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3602
|
|
|
3603 ecb_crypt (raw_key, encrypted_string, rounded_size,
|
|
|
3604 DES_ENCRYPT | DES_SW);
|
|
|
3605 return make_string (encrypted_string, rounded_size);
|
|
|
3606 }
|
|
|
3607
|
|
|
3608 DEFUN ("decrypt-string", Fdecrypt_string, 2, 2, 0, /*
|
|
|
3609 Decrypt STRING using KEY.
|
|
|
3610 */
|
|
|
3611 (string, key))
|
|
|
3612 {
|
|
|
3613 char *decrypted_string, *raw_key;
|
|
|
3614 int string_size, key_size;
|
|
|
3615
|
|
|
3616 CHECK_STRING (string);
|
|
|
3617 CHECK_STRING (key);
|
|
|
3618
|
|
|
3619 string_size = XSTRING_LENGTH (string) + 1;
|
|
|
3620 decrypted_string = alloca (string_size);
|
|
|
3621 memcpy (decrypted_string, XSTRING_DATA (string), string_size);
|
|
|
3622 decrypted_string[string_size - 1] = '\0';
|
|
|
3623
|
|
|
3624 key_size = min (CRYPT_KEY_SIZE, XSTRING_LENGTH (key))
|
|
|
3625
|
|
|
3626 raw_key = alloca (CRYPT_KEY_SIZE + 1);
|
|
|
3627 memcpy (raw_key, XSTRING_DATA (key), key_size);
|
|
|
3628 memset (raw_key + key_size, 0, (CRYPT_KEY_SIZE + 1) - key_size);
|
|
|
3629
|
|
|
3630
|
|
|
3631 ecb_crypt (raw_key, decrypted_string, string_size, D | DES_SW);
|
|
|
3632 return make_string (decrypted_string, string_size - 1);
|
|
|
3633 }
|
|
|
3634 #endif /* 0 */
|
|
|
3635
|
|
|
3636
|
|
|
3637 DEFUN ("verify-visited-file-modtime", Fverify_visited_file_modtime, 1, 1, 0, /*
|
|
444
|
3638 Return t if last mod time of BUFFER's visited file matches what BUFFER records.
|
|
428
|
3639 This means that the file has not been changed since it was visited or saved.
|
|
|
3640 */
|
|
444
|
3641 (buffer))
|
|
428
|
3642 {
|
|
442
|
3643 /* This function can call lisp; GC checked 2000-07-11 ben */
|
|
428
|
3644 struct buffer *b;
|
|
|
3645 struct stat st;
|
|
|
3646 Lisp_Object handler;
|
|
|
3647
|
|
444
|
3648 CHECK_BUFFER (buffer);
|
|
|
3649 b = XBUFFER (buffer);
|
|
428
|
3650
|
|
|
3651 if (!STRINGP (b->filename)) return Qt;
|
|
|
3652 if (b->modtime == 0) return Qt;
|
|
|
3653
|
|
|
3654 /* If the file name has special constructs in it,
|
|
|
3655 call the corresponding file handler. */
|
|
|
3656 handler = Ffind_file_name_handler (b->filename,
|
|
|
3657 Qverify_visited_file_modtime);
|
|
|
3658 if (!NILP (handler))
|
|
444
|
3659 return call2 (handler, Qverify_visited_file_modtime, buffer);
|
|
428
|
3660
|
|
442
|
3661 if (xemacs_stat ((char *) XSTRING_DATA (b->filename), &st) < 0)
|
|
428
|
3662 {
|
|
|
3663 /* If the file doesn't exist now and didn't exist before,
|
|
|
3664 we say that it isn't modified, provided the error is a tame one. */
|
|
|
3665 if (errno == ENOENT || errno == EACCES || errno == ENOTDIR)
|
|
|
3666 st.st_mtime = -1;
|
|
|
3667 else
|
|
|
3668 st.st_mtime = 0;
|
|
|
3669 }
|
|
|
3670 if (st.st_mtime == b->modtime
|
|
|
3671 /* If both are positive, accept them if they are off by one second. */
|
|
|
3672 || (st.st_mtime > 0 && b->modtime > 0
|
|
|
3673 && (st.st_mtime == b->modtime + 1
|
|
|
3674 || st.st_mtime == b->modtime - 1)))
|
|
|
3675 return Qt;
|
|
|
3676 return Qnil;
|
|
|
3677 }
|
|
|
3678
|
|
|
3679 DEFUN ("clear-visited-file-modtime", Fclear_visited_file_modtime, 0, 0, 0, /*
|
|
|
3680 Clear out records of last mod time of visited file.
|
|
|
3681 Next attempt to save will certainly not complain of a discrepancy.
|
|
|
3682 */
|
|
|
3683 ())
|
|
|
3684 {
|
|
|
3685 current_buffer->modtime = 0;
|
|
|
3686 return Qnil;
|
|
|
3687 }
|
|
|
3688
|
|
|
3689 DEFUN ("visited-file-modtime", Fvisited_file_modtime, 0, 0, 0, /*
|
|
|
3690 Return the current buffer's recorded visited file modification time.
|
|
|
3691 The value is a list of the form (HIGH . LOW), like the time values
|
|
|
3692 that `file-attributes' returns.
|
|
|
3693 */
|
|
|
3694 ())
|
|
|
3695 {
|
|
|
3696 return time_to_lisp ((time_t) current_buffer->modtime);
|
|
|
3697 }
|
|
|
3698
|
|
|
3699 DEFUN ("set-visited-file-modtime", Fset_visited_file_modtime, 0, 1, 0, /*
|
|
|
3700 Update buffer's recorded modification time from the visited file's time.
|
|
|
3701 Useful if the buffer was not read from the file normally
|
|
|
3702 or if the file itself has been changed for some known benign reason.
|
|
|
3703 An argument specifies the modification time value to use
|
|
|
3704 \(instead of that of the visited file), in the form of a list
|
|
|
3705 \(HIGH . LOW) or (HIGH LOW).
|
|
|
3706 */
|
|
|
3707 (time_list))
|
|
|
3708 {
|
|
|
3709 /* This function can call lisp */
|
|
|
3710 if (!NILP (time_list))
|
|
|
3711 {
|
|
|
3712 time_t the_time;
|
|
|
3713 lisp_to_time (time_list, &the_time);
|
|
|
3714 current_buffer->modtime = (int) the_time;
|
|
|
3715 }
|
|
|
3716 else
|
|
|
3717 {
|
|
446
|
3718 Lisp_Object filename = Qnil;
|
|
428
|
3719 struct stat st;
|
|
|
3720 Lisp_Object handler;
|
|
|
3721 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3722
|
|
|
3723 GCPRO3 (filename, time_list, current_buffer->filename);
|
|
|
3724 filename = Fexpand_file_name (current_buffer->filename, Qnil);
|
|
|
3725
|
|
|
3726 /* If the file name has special constructs in it,
|
|
|
3727 call the corresponding file handler. */
|
|
|
3728 handler = Ffind_file_name_handler (filename, Qset_visited_file_modtime);
|
|
|
3729 UNGCPRO;
|
|
|
3730 if (!NILP (handler))
|
|
|
3731 /* The handler can find the file name the same way we did. */
|
|
|
3732 return call2 (handler, Qset_visited_file_modtime, Qnil);
|
|
442
|
3733 else if (xemacs_stat ((char *) XSTRING_DATA (filename), &st) >= 0)
|
|
428
|
3734 current_buffer->modtime = st.st_mtime;
|
|
|
3735 }
|
|
|
3736
|
|
|
3737 return Qnil;
|
|
|
3738 }
|
|
|
3739
|
|
|
3740 static Lisp_Object
|
|
|
3741 auto_save_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3742 {
|
|
|
3743 /* This function can call lisp */
|
|
|
3744 if (gc_in_progress)
|
|
|
3745 return Qnil;
|
|
|
3746 /* Don't try printing an error message after everything is gone! */
|
|
|
3747 if (preparing_for_armageddon)
|
|
|
3748 return Qnil;
|
|
|
3749 clear_echo_area (selected_frame (), Qauto_saving, 1);
|
|
|
3750 Fding (Qt, Qauto_save_error, Qnil);
|
|
|
3751 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3752 Fsleep_for (make_int (1));
|
|
|
3753 message ("Auto-saving...error!for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3754 Fsleep_for (make_int (1));
|
|
|
3755 message ("Auto-saving...error for %s", XSTRING_DATA (current_buffer->name));
|
|
|
3756 Fsleep_for (make_int (1));
|
|
|
3757 return Qnil;
|
|
|
3758 }
|
|
|
3759
|
|
|
3760 static Lisp_Object
|
|
|
3761 auto_save_1 (Lisp_Object ignored)
|
|
|
3762 {
|
|
|
3763 /* This function can call lisp */
|
|
|
3764 /* #### I think caller is protecting current_buffer? */
|
|
|
3765 struct stat st;
|
|
|
3766 Lisp_Object fn = current_buffer->filename;
|
|
|
3767 Lisp_Object a = current_buffer->auto_save_file_name;
|
|
|
3768
|
|
|
3769 if (!STRINGP (a))
|
|
|
3770 return (Qnil);
|
|
|
3771
|
|
|
3772 /* Get visited file's mode to become the auto save file's mode. */
|
|
|
3773 if (STRINGP (fn) &&
|
|
442
|
3774 xemacs_stat ((char *) XSTRING_DATA (fn), &st) >= 0)
|
|
428
|
3775 /* But make sure we can overwrite it later! */
|
|
|
3776 auto_save_mode_bits = st.st_mode | 0600;
|
|
|
3777 else
|
|
|
3778 /* default mode for auto-save files of buffers with no file is
|
|
|
3779 readable by owner only. This may annoy some small number of
|
|
|
3780 people, but the alternative removes all privacy from email. */
|
|
|
3781 auto_save_mode_bits = 0600;
|
|
|
3782
|
|
|
3783 return
|
|
|
3784 /* !!#### need to deal with this 'escape-quoted everywhere */
|
|
|
3785 Fwrite_region_internal (Qnil, Qnil, a, Qnil, Qlambda, Qnil,
|
|
|
3786 #ifdef MULE
|
|
|
3787 Qescape_quoted
|
|
|
3788 #else
|
|
|
3789 Qnil
|
|
|
3790 #endif
|
|
|
3791 );
|
|
|
3792 }
|
|
|
3793
|
|
|
3794 static Lisp_Object
|
|
|
3795 auto_save_expand_name_error (Lisp_Object condition_object, Lisp_Object ignored)
|
|
|
3796 {
|
|
|
3797 /* #### this function should spew an error message about not being
|
|
|
3798 able to open the .saves file. */
|
|
|
3799 return Qnil;
|
|
|
3800 }
|
|
|
3801
|
|
|
3802 static Lisp_Object
|
|
|
3803 auto_save_expand_name (Lisp_Object name)
|
|
|
3804 {
|
|
|
3805 struct gcpro gcpro1;
|
|
|
3806
|
|
|
3807 /* note that caller did NOT gc protect name, so we do it. */
|
|
|
3808 /* #### dmoore - this might not be necessary, if condition_case_1
|
|
|
3809 protects it. but I don't think it does. */
|
|
|
3810 GCPRO1 (name);
|
|
|
3811 RETURN_UNGCPRO (Fexpand_file_name (name, Qnil));
|
|
|
3812 }
|
|
|
3813
|
|
|
3814
|
|
|
3815 static Lisp_Object
|
|
|
3816 do_auto_save_unwind (Lisp_Object fd)
|
|
|
3817 {
|
|
|
3818 close (XINT (fd));
|
|
|
3819 return (fd);
|
|
|
3820 }
|
|
|
3821
|
|
|
3822 static Lisp_Object
|
|
|
3823 do_auto_save_unwind_2 (Lisp_Object old_auto_saving)
|
|
|
3824 {
|
|
|
3825 auto_saving = XINT (old_auto_saving);
|
|
|
3826 return Qnil;
|
|
|
3827 }
|
|
|
3828
|
|
|
3829 /* Fdo_auto_save() checks whether a GC is in progress when it is called,
|
|
|
3830 and if so, tries to avoid touching lisp objects.
|
|
|
3831
|
|
|
3832 The only time that Fdo_auto_save() is called while GC is in progress
|
|
|
3833 is if we're going down, as a result of an abort() or a kill signal.
|
|
|
3834 It's fairly important that we generate autosave files in that case!
|
|
|
3835 */
|
|
|
3836
|
|
|
3837 DEFUN ("do-auto-save", Fdo_auto_save, 0, 2, "", /*
|
|
|
3838 Auto-save all buffers that need it.
|
|
|
3839 This is all buffers that have auto-saving enabled
|
|
|
3840 and are changed since last auto-saved.
|
|
|
3841 Auto-saving writes the buffer into a file
|
|
|
3842 so that your editing is not lost if the system crashes.
|
|
|
3843 This file is not the file you visited; that changes only when you save.
|
|
|
3844 Normally we run the normal hook `auto-save-hook' before saving.
|
|
|
3845
|
|
|
3846 Non-nil first argument means do not print any message if successful.
|
|
|
3847 Non-nil second argument means save only current buffer.
|
|
|
3848 */
|
|
|
3849 (no_message, current_only))
|
|
|
3850 {
|
|
|
3851 /* This function can call lisp */
|
|
|
3852 struct buffer *b;
|
|
|
3853 Lisp_Object tail, buf;
|
|
|
3854 int auto_saved = 0;
|
|
|
3855 int do_handled_files;
|
|
|
3856 Lisp_Object oquit = Qnil;
|
|
|
3857 Lisp_Object listfile = Qnil;
|
|
|
3858 Lisp_Object old;
|
|
|
3859 int listdesc = -1;
|
|
|
3860 int speccount = specpdl_depth ();
|
|
|
3861 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
3862
|
|
|
3863 XSETBUFFER (old, current_buffer);
|
|
|
3864 GCPRO3 (oquit, listfile, old);
|
|
|
3865 check_quit (); /* make Vquit_flag accurate */
|
|
|
3866 /* Ordinarily don't quit within this function,
|
|
|
3867 but don't make it impossible to quit (in case we get hung in I/O). */
|
|
|
3868 oquit = Vquit_flag;
|
|
|
3869 Vquit_flag = Qnil;
|
|
|
3870
|
|
|
3871 /* No further GCPRO needed, because (when it matters) all Lisp_Object
|
|
|
3872 variables point to non-strings reached from Vbuffer_alist. */
|
|
|
3873
|
|
|
3874 if (minibuf_level != 0 || preparing_for_armageddon)
|
|
|
3875 no_message = Qt;
|
|
|
3876
|
|
|
3877 run_hook (Qauto_save_hook);
|
|
|
3878
|
|
|
3879 if (STRINGP (Vauto_save_list_file_name))
|
|
|
3880 listfile = condition_case_1 (Qt,
|
|
|
3881 auto_save_expand_name,
|
|
|
3882 Vauto_save_list_file_name,
|
|
|
3883 auto_save_expand_name_error, Qnil);
|
|
|
3884
|
|
|
3885 /* Make sure auto_saving is reset. */
|
|
|
3886 record_unwind_protect (do_auto_save_unwind_2, make_int (auto_saving));
|
|
|
3887
|
|
|
3888 auto_saving = 1;
|
|
|
3889
|
|
|
3890 /* First, save all files which don't have handlers. If Emacs is
|
|
|
3891 crashing, the handlers may tweak what is causing Emacs to crash
|
|
|
3892 in the first place, and it would be a shame if Emacs failed to
|
|
|
3893 autosave perfectly ordinary files because it couldn't handle some
|
|
|
3894 ange-ftp'd file. */
|
|
|
3895 for (do_handled_files = 0; do_handled_files < 2; do_handled_files++)
|
|
|
3896 {
|
|
|
3897 for (tail = Vbuffer_alist;
|
|
|
3898 CONSP (tail);
|
|
|
3899 tail = XCDR (tail))
|
|
|
3900 {
|
|
|
3901 buf = XCDR (XCAR (tail));
|
|
|
3902 b = XBUFFER (buf);
|
|
|
3903
|
|
|
3904 if (!NILP (current_only)
|
|
|
3905 && b != current_buffer)
|
|
|
3906 continue;
|
|
|
3907
|
|
|
3908 /* Don't auto-save indirect buffers.
|
|
|
3909 The base buffer takes care of it. */
|
|
|
3910 if (b->base_buffer)
|
|
|
3911 continue;
|
|
|
3912
|
|
|
3913 /* Check for auto save enabled
|
|
|
3914 and file changed since last auto save
|
|
|
3915 and file changed since last real save. */
|
|
|
3916 if (STRINGP (b->auto_save_file_name)
|
|
|
3917 && BUF_SAVE_MODIFF (b) < BUF_MODIFF (b)
|
|
|
3918 && b->auto_save_modified < BUF_MODIFF (b)
|
|
|
3919 /* -1 means we've turned off autosaving for a while--see below. */
|
|
|
3920 && XINT (b->saved_size) >= 0
|
|
|
3921 && (do_handled_files
|
|
|
3922 || NILP (Ffind_file_name_handler (b->auto_save_file_name,
|
|
|
3923 Qwrite_region))))
|
|
|
3924 {
|
|
|
3925 EMACS_TIME before_time, after_time;
|
|
|
3926
|
|
|
3927 EMACS_GET_TIME (before_time);
|
|
|
3928 /* If we had a failure, don't try again for 20 minutes. */
|
|
|
3929 if (!preparing_for_armageddon
|
|
|
3930 && b->auto_save_failure_time >= 0
|
|
|
3931 && (EMACS_SECS (before_time) - b->auto_save_failure_time <
|
|
|
3932 1200))
|
|
|
3933 continue;
|
|
|
3934
|
|
|
3935 if (!preparing_for_armageddon &&
|
|
|
3936 (XINT (b->saved_size) * 10
|
|
|
3937 > (BUF_Z (b) - BUF_BEG (b)) * 13)
|
|
|
3938 /* A short file is likely to change a large fraction;
|
|
|
3939 spare the user annoying messages. */
|
|
|
3940 && XINT (b->saved_size) > 5000
|
|
|
3941 /* These messages are frequent and annoying for `*mail*'. */
|
|
|
3942 && !NILP (b->filename)
|
|
|
3943 && NILP (no_message)
|
|
|
3944 && disable_auto_save_when_buffer_shrinks)
|
|
|
3945 {
|
|
|
3946 /* It has shrunk too much; turn off auto-saving here.
|
|
|
3947 Unless we're about to crash, in which case auto-save it
|
|
|
3948 anyway.
|
|
|
3949 */
|
|
|
3950 message
|
|
|
3951 ("Buffer %s has shrunk a lot; auto save turned off there",
|
|
|
3952 XSTRING_DATA (b->name));
|
|
|
3953 /* Turn off auto-saving until there's a real save,
|
|
|
3954 and prevent any more warnings. */
|
|
|
3955 b->saved_size = make_int (-1);
|
|
|
3956 if (!gc_in_progress)
|
|
|
3957 Fsleep_for (make_int (1));
|
|
|
3958 continue;
|
|
|
3959 }
|
|
|
3960 set_buffer_internal (b);
|
|
|
3961 if (!auto_saved && NILP (no_message))
|
|
|
3962 {
|
|
442
|
3963 static const unsigned char *msg
|
|
|
3964 = (const unsigned char *) "Auto-saving...";
|
|
428
|
3965 echo_area_message (selected_frame (), msg, Qnil,
|
|
442
|
3966 0, strlen ((const char *) msg),
|
|
428
|
3967 Qauto_saving);
|
|
|
3968 }
|
|
|
3969
|
|
|
3970 /* Open the auto-save list file, if necessary.
|
|
|
3971 We only do this now so that the file only exists
|
|
|
3972 if we actually auto-saved any files. */
|
|
444
|
3973 if (!auto_saved && !inhibit_auto_save_session
|
|
|
3974 && !NILP (Vauto_save_list_file_prefix)
|
|
|
3975 && STRINGP (listfile) && listdesc < 0)
|
|
428
|
3976 {
|
|
|
3977 listdesc = open ((char *) XSTRING_DATA (listfile),
|
|
|
3978 O_WRONLY | O_TRUNC | O_CREAT | OPEN_BINARY,
|
|
|
3979 CREAT_MODE);
|
|
|
3980
|
|
|
3981 /* Arrange to close that file whether or not we get
|
|
|
3982 an error. */
|
|
|
3983 if (listdesc >= 0)
|
|
|
3984 record_unwind_protect (do_auto_save_unwind,
|
|
|
3985 make_int (listdesc));
|
|
|
3986 }
|
|
|
3987
|
|
|
3988 /* Record all the buffers that we are auto-saving in
|
|
|
3989 the special file that lists them. For each of
|
|
|
3990 these buffers, record visited name (if any) and
|
|
|
3991 auto save name. */
|
|
|
3992 if (listdesc >= 0)
|
|
|
3993 {
|
|
442
|
3994 const Extbyte *auto_save_file_name_ext;
|
|
428
|
3995 Extcount auto_save_file_name_ext_len;
|
|
|
3996
|
|
440
|
3997 TO_EXTERNAL_FORMAT (LISP_STRING, b->auto_save_file_name,
|
|
|
3998 ALLOCA, (auto_save_file_name_ext,
|
|
|
3999 auto_save_file_name_ext_len),
|
|
|
4000 Qfile_name);
|
|
428
|
4001 if (!NILP (b->filename))
|
|
|
4002 {
|
|
442
|
4003 const Extbyte *filename_ext;
|
|
428
|
4004 Extcount filename_ext_len;
|
|
|
4005
|
|
440
|
4006 TO_EXTERNAL_FORMAT (LISP_STRING, b->filename,
|
|
|
4007 ALLOCA, (filename_ext,
|
|
|
4008 filename_ext_len),
|
|
|
4009 Qfile_name);
|
|
428
|
4010 write (listdesc, filename_ext, filename_ext_len);
|
|
|
4011 }
|
|
|
4012 write (listdesc, "\n", 1);
|
|
|
4013 write (listdesc, auto_save_file_name_ext,
|
|
|
4014 auto_save_file_name_ext_len);
|
|
|
4015 write (listdesc, "\n", 1);
|
|
|
4016 }
|
|
|
4017
|
|
|
4018 /* dmoore - In a bad scenario we've set b=XBUFFER(buf)
|
|
|
4019 based on values in Vbuffer_alist. auto_save_1 may
|
|
|
4020 cause lisp handlers to run. Those handlers may kill
|
|
|
4021 the buffer and then GC. Since the buffer is killed,
|
|
|
4022 it's no longer in Vbuffer_alist so it might get reaped
|
|
|
4023 by the GC. We also need to protect tail. */
|
|
|
4024 /* #### There is probably a lot of other code which has
|
|
|
4025 pointers into buffers which may get blown away by
|
|
|
4026 handlers. */
|
|
|
4027 {
|
|
|
4028 struct gcpro ngcpro1, ngcpro2;
|
|
|
4029 NGCPRO2 (buf, tail);
|
|
|
4030 condition_case_1 (Qt,
|
|
|
4031 auto_save_1, Qnil,
|
|
|
4032 auto_save_error, Qnil);
|
|
|
4033 NUNGCPRO;
|
|
|
4034 }
|
|
|
4035 /* Handler killed our saved current-buffer! Pick any. */
|
|
|
4036 if (!BUFFER_LIVE_P (XBUFFER (old)))
|
|
|
4037 XSETBUFFER (old, current_buffer);
|
|
|
4038
|
|
|
4039 set_buffer_internal (XBUFFER (old));
|
|
|
4040 auto_saved++;
|
|
|
4041
|
|
|
4042 /* Handler killed their own buffer! */
|
|
|
4043 if (!BUFFER_LIVE_P(b))
|
|
|
4044 continue;
|
|
|
4045
|
|
|
4046 b->auto_save_modified = BUF_MODIFF (b);
|
|
|
4047 b->saved_size = make_int (BUF_SIZE (b));
|
|
|
4048 EMACS_GET_TIME (after_time);
|
|
|
4049 /* If auto-save took more than 60 seconds,
|
|
|
4050 assume it was an NFS failure that got a timeout. */
|
|
|
4051 if (EMACS_SECS (after_time) - EMACS_SECS (before_time) > 60)
|
|
|
4052 b->auto_save_failure_time = EMACS_SECS (after_time);
|
|
|
4053 }
|
|
|
4054 }
|
|
|
4055 }
|
|
|
4056
|
|
|
4057 /* Prevent another auto save till enough input events come in. */
|
|
|
4058 if (auto_saved)
|
|
|
4059 record_auto_save ();
|
|
|
4060
|
|
|
4061 /* If we didn't save anything into the listfile, remove the old
|
|
|
4062 one because nothing needed to be auto-saved. Do this afterwards
|
|
|
4063 rather than before in case we get a crash attempting to autosave
|
|
|
4064 (in that case we'd still want the old one around). */
|
|
|
4065 if (listdesc < 0 && !auto_saved && STRINGP (listfile))
|
|
|
4066 unlink ((char *) XSTRING_DATA (listfile));
|
|
|
4067
|
|
|
4068 /* Show "...done" only if the echo area would otherwise be empty. */
|
|
|
4069 if (auto_saved && NILP (no_message)
|
|
|
4070 && NILP (clear_echo_area (selected_frame (), Qauto_saving, 0)))
|
|
|
4071 {
|
|
442
|
4072 static const unsigned char *msg
|
|
|
4073 = (const unsigned char *)"Auto-saving...done";
|
|
428
|
4074 echo_area_message (selected_frame (), msg, Qnil, 0,
|
|
442
|
4075 strlen ((const char *) msg), Qauto_saving);
|
|
428
|
4076 }
|
|
|
4077
|
|
|
4078 Vquit_flag = oquit;
|
|
|
4079
|
|
|
4080 RETURN_UNGCPRO (unbind_to (speccount, Qnil));
|
|
|
4081 }
|
|
|
4082
|
|
|
4083 DEFUN ("set-buffer-auto-saved", Fset_buffer_auto_saved, 0, 0, 0, /*
|
|
|
4084 Mark current buffer as auto-saved with its current text.
|
|
|
4085 No auto-save file will be written until the buffer changes again.
|
|
|
4086 */
|
|
|
4087 ())
|
|
|
4088 {
|
|
|
4089 current_buffer->auto_save_modified = BUF_MODIFF (current_buffer);
|
|
|
4090 current_buffer->saved_size = make_int (BUF_SIZE (current_buffer));
|
|
|
4091 current_buffer->auto_save_failure_time = -1;
|
|
|
4092 return Qnil;
|
|
|
4093 }
|
|
|
4094
|
|
|
4095 DEFUN ("clear-buffer-auto-save-failure", Fclear_buffer_auto_save_failure, 0, 0, 0, /*
|
|
|
4096 Clear any record of a recent auto-save failure in the current buffer.
|
|
|
4097 */
|
|
|
4098 ())
|
|
|
4099 {
|
|
|
4100 current_buffer->auto_save_failure_time = -1;
|
|
|
4101 return Qnil;
|
|
|
4102 }
|
|
|
4103
|
|
|
4104 DEFUN ("recent-auto-save-p", Frecent_auto_save_p, 0, 0, 0, /*
|
|
|
4105 Return t if buffer has been auto-saved since last read in or saved.
|
|
|
4106 */
|
|
|
4107 ())
|
|
|
4108 {
|
|
|
4109 return (BUF_SAVE_MODIFF (current_buffer) <
|
|
|
4110 current_buffer->auto_save_modified) ? Qt : Qnil;
|
|
|
4111 }
|
|
|
4112
|
|
|
4113
|
|
|
4114 /************************************************************************/
|
|
|
4115 /* initialization */
|
|
|
4116 /************************************************************************/
|
|
|
4117
|
|
|
4118 void
|
|
|
4119 syms_of_fileio (void)
|
|
|
4120 {
|
|
563
|
4121 DEFSYMBOL (Qexpand_file_name);
|
|
|
4122 DEFSYMBOL (Qfile_truename);
|
|
|
4123 DEFSYMBOL (Qsubstitute_in_file_name);
|
|
|
4124 DEFSYMBOL (Qdirectory_file_name);
|
|
|
4125 DEFSYMBOL (Qfile_name_directory);
|
|
|
4126 DEFSYMBOL (Qfile_name_nondirectory);
|
|
|
4127 DEFSYMBOL (Qunhandled_file_name_directory);
|
|
|
4128 DEFSYMBOL (Qfile_name_as_directory);
|
|
|
4129 DEFSYMBOL (Qcopy_file);
|
|
|
4130 DEFSYMBOL (Qmake_directory_internal);
|
|
|
4131 DEFSYMBOL (Qdelete_directory);
|
|
|
4132 DEFSYMBOL (Qdelete_file);
|
|
|
4133 DEFSYMBOL (Qrename_file);
|
|
|
4134 DEFSYMBOL (Qadd_name_to_file);
|
|
|
4135 DEFSYMBOL (Qmake_symbolic_link);
|
|
|
4136 DEFSYMBOL (Qfile_exists_p);
|
|
|
4137 DEFSYMBOL (Qfile_executable_p);
|
|
|
4138 DEFSYMBOL (Qfile_readable_p);
|
|
|
4139 DEFSYMBOL (Qfile_symlink_p);
|
|
|
4140 DEFSYMBOL (Qfile_writable_p);
|
|
|
4141 DEFSYMBOL (Qfile_directory_p);
|
|
|
4142 DEFSYMBOL (Qfile_regular_p);
|
|
|
4143 DEFSYMBOL (Qfile_accessible_directory_p);
|
|
|
4144 DEFSYMBOL (Qfile_modes);
|
|
|
4145 DEFSYMBOL (Qset_file_modes);
|
|
|
4146 DEFSYMBOL (Qfile_newer_than_file_p);
|
|
|
4147 DEFSYMBOL (Qinsert_file_contents);
|
|
|
4148 DEFSYMBOL (Qwrite_region);
|
|
|
4149 DEFSYMBOL (Qverify_visited_file_modtime);
|
|
|
4150 DEFSYMBOL (Qset_visited_file_modtime);
|
|
|
4151 DEFSYMBOL (Qcar_less_than_car); /* Vomitous! */
|
|
|
4152
|
|
|
4153 DEFSYMBOL (Qauto_save_hook);
|
|
|
4154 DEFSYMBOL (Qauto_save_error);
|
|
|
4155 DEFSYMBOL (Qauto_saving);
|
|
|
4156
|
|
|
4157 DEFSYMBOL (Qformat_decode);
|
|
|
4158 DEFSYMBOL (Qformat_annotate_function);
|
|
|
4159
|
|
|
4160 DEFSYMBOL (Qcompute_buffer_file_truename);
|
|
|
4161
|
|
442
|
4162 DEFERROR_STANDARD (Qfile_already_exists, Qfile_error);
|
|
428
|
4163
|
|
|
4164 DEFSUBR (Ffind_file_name_handler);
|
|
|
4165
|
|
|
4166 DEFSUBR (Ffile_name_directory);
|
|
|
4167 DEFSUBR (Ffile_name_nondirectory);
|
|
|
4168 DEFSUBR (Funhandled_file_name_directory);
|
|
|
4169 DEFSUBR (Ffile_name_as_directory);
|
|
|
4170 DEFSUBR (Fdirectory_file_name);
|
|
|
4171 DEFSUBR (Fmake_temp_name);
|
|
|
4172 DEFSUBR (Fexpand_file_name);
|
|
|
4173 DEFSUBR (Ffile_truename);
|
|
|
4174 DEFSUBR (Fsubstitute_in_file_name);
|
|
|
4175 DEFSUBR (Fcopy_file);
|
|
|
4176 DEFSUBR (Fmake_directory_internal);
|
|
|
4177 DEFSUBR (Fdelete_directory);
|
|
|
4178 DEFSUBR (Fdelete_file);
|
|
|
4179 DEFSUBR (Frename_file);
|
|
|
4180 DEFSUBR (Fadd_name_to_file);
|
|
|
4181 DEFSUBR (Fmake_symbolic_link);
|
|
|
4182 #ifdef HPUX_NET
|
|
|
4183 DEFSUBR (Fsysnetunam);
|
|
|
4184 #endif /* HPUX_NET */
|
|
|
4185 DEFSUBR (Ffile_name_absolute_p);
|
|
|
4186 DEFSUBR (Ffile_exists_p);
|
|
|
4187 DEFSUBR (Ffile_executable_p);
|
|
|
4188 DEFSUBR (Ffile_readable_p);
|
|
|
4189 DEFSUBR (Ffile_writable_p);
|
|
|
4190 DEFSUBR (Ffile_symlink_p);
|
|
|
4191 DEFSUBR (Ffile_directory_p);
|
|
|
4192 DEFSUBR (Ffile_accessible_directory_p);
|
|
|
4193 DEFSUBR (Ffile_regular_p);
|
|
|
4194 DEFSUBR (Ffile_modes);
|
|
|
4195 DEFSUBR (Fset_file_modes);
|
|
|
4196 DEFSUBR (Fset_default_file_modes);
|
|
|
4197 DEFSUBR (Fdefault_file_modes);
|
|
|
4198 DEFSUBR (Funix_sync);
|
|
|
4199 DEFSUBR (Ffile_newer_than_file_p);
|
|
|
4200 DEFSUBR (Finsert_file_contents_internal);
|
|
|
4201 DEFSUBR (Fwrite_region_internal);
|
|
|
4202 DEFSUBR (Fcar_less_than_car); /* Vomitous! */
|
|
|
4203 DEFSUBR (Fcdr_less_than_cdr); /* Yeah oh yeah bucko .... */
|
|
|
4204 #if 0
|
|
|
4205 DEFSUBR (Fencrypt_string);
|
|
|
4206 DEFSUBR (Fdecrypt_string);
|
|
|
4207 #endif
|
|
|
4208 DEFSUBR (Fverify_visited_file_modtime);
|
|
|
4209 DEFSUBR (Fclear_visited_file_modtime);
|
|
|
4210 DEFSUBR (Fvisited_file_modtime);
|
|
|
4211 DEFSUBR (Fset_visited_file_modtime);
|
|
|
4212
|
|
|
4213 DEFSUBR (Fdo_auto_save);
|
|
|
4214 DEFSUBR (Fset_buffer_auto_saved);
|
|
|
4215 DEFSUBR (Fclear_buffer_auto_save_failure);
|
|
|
4216 DEFSUBR (Frecent_auto_save_p);
|
|
|
4217 }
|
|
|
4218
|
|
|
4219 void
|
|
|
4220 vars_of_fileio (void)
|
|
|
4221 {
|
|
|
4222 DEFVAR_LISP ("auto-save-file-format", &Vauto_save_file_format /*
|
|
|
4223 *Format in which to write auto-save files.
|
|
|
4224 Should be a list of symbols naming formats that are defined in `format-alist'.
|
|
|
4225 If it is t, which is the default, auto-save files are written in the
|
|
|
4226 same format as a regular save would use.
|
|
|
4227 */ );
|
|
|
4228 Vauto_save_file_format = Qt;
|
|
|
4229
|
|
|
4230 DEFVAR_LISP ("file-name-handler-alist", &Vfile_name_handler_alist /*
|
|
|
4231 *Alist of elements (REGEXP . HANDLER) for file names handled specially.
|
|
|
4232 If a file name matches REGEXP, then all I/O on that file is done by calling
|
|
|
4233 HANDLER.
|
|
|
4234
|
|
|
4235 The first argument given to HANDLER is the name of the I/O primitive
|
|
|
4236 to be handled; the remaining arguments are the arguments that were
|
|
|
4237 passed to that primitive. For example, if you do
|
|
|
4238 (file-exists-p FILENAME)
|
|
|
4239 and FILENAME is handled by HANDLER, then HANDLER is called like this:
|
|
|
4240 (funcall HANDLER 'file-exists-p FILENAME)
|
|
|
4241 The function `find-file-name-handler' checks this list for a handler
|
|
|
4242 for its argument.
|
|
|
4243 */ );
|
|
|
4244 Vfile_name_handler_alist = Qnil;
|
|
|
4245
|
|
|
4246 DEFVAR_LISP ("after-insert-file-functions", &Vafter_insert_file_functions /*
|
|
|
4247 A list of functions to be called at the end of `insert-file-contents'.
|
|
|
4248 Each is passed one argument, the number of bytes inserted. It should return
|
|
|
4249 the new byte count, and leave point the same. If `insert-file-contents' is
|
|
|
4250 intercepted by a handler from `file-name-handler-alist', that handler is
|
|
|
4251 responsible for calling the after-insert-file-functions if appropriate.
|
|
|
4252 */ );
|
|
|
4253 Vafter_insert_file_functions = Qnil;
|
|
|
4254
|
|
|
4255 DEFVAR_LISP ("write-region-annotate-functions",
|
|
|
4256 &Vwrite_region_annotate_functions /*
|
|
|
4257 A list of functions to be called at the start of `write-region'.
|
|
|
4258 Each is passed two arguments, START and END, as for `write-region'.
|
|
|
4259 It should return a list of pairs (POSITION . STRING) of strings to be
|
|
|
4260 effectively inserted at the specified positions of the file being written
|
|
|
4261 \(1 means to insert before the first byte written). The POSITIONs must be
|
|
|
4262 sorted into increasing order. If there are several functions in the list,
|
|
|
4263 the several lists are merged destructively.
|
|
|
4264 */ );
|
|
|
4265 Vwrite_region_annotate_functions = Qnil;
|
|
|
4266
|
|
|
4267 DEFVAR_LISP ("write-region-annotations-so-far",
|
|
|
4268 &Vwrite_region_annotations_so_far /*
|
|
|
4269 When an annotation function is called, this holds the previous annotations.
|
|
|
4270 These are the annotations made by other annotation functions
|
|
|
4271 that were already called. See also `write-region-annotate-functions'.
|
|
|
4272 */ );
|
|
|
4273 Vwrite_region_annotations_so_far = Qnil;
|
|
|
4274
|
|
|
4275 DEFVAR_LISP ("inhibit-file-name-handlers", &Vinhibit_file_name_handlers /*
|
|
|
4276 A list of file name handlers that temporarily should not be used.
|
|
|
4277 This applies only to the operation `inhibit-file-name-operation'.
|
|
|
4278 */ );
|
|
|
4279 Vinhibit_file_name_handlers = Qnil;
|
|
|
4280
|
|
|
4281 DEFVAR_LISP ("inhibit-file-name-operation", &Vinhibit_file_name_operation /*
|
|
|
4282 The operation for which `inhibit-file-name-handlers' is applicable.
|
|
|
4283 */ );
|
|
|
4284 Vinhibit_file_name_operation = Qnil;
|
|
|
4285
|
|
|
4286 DEFVAR_LISP ("auto-save-list-file-name", &Vauto_save_list_file_name /*
|
|
|
4287 File name in which we write a list of all auto save file names.
|
|
|
4288 */ );
|
|
|
4289 Vauto_save_list_file_name = Qnil;
|
|
|
4290
|
|
444
|
4291 DEFVAR_LISP ("auto-save-list-file-prefix", &Vauto_save_list_file_prefix /*
|
|
|
4292 Prefix for generating auto-save-list-file-name.
|
|
|
4293 Emacs's pid and the system name will be appended to
|
|
|
4294 this prefix to create a unique file name.
|
|
|
4295 */ );
|
|
|
4296 Vauto_save_list_file_prefix = build_string ("~/.saves-");
|
|
|
4297
|
|
|
4298 DEFVAR_BOOL ("inhibit-auto-save-session", &inhibit_auto_save_session /*
|
|
|
4299 When non-nil, inhibit auto save list file creation.
|
|
|
4300 */ );
|
|
|
4301 inhibit_auto_save_session = 0;
|
|
|
4302
|
|
428
|
4303 DEFVAR_BOOL ("disable-auto-save-when-buffer-shrinks",
|
|
|
4304 &disable_auto_save_when_buffer_shrinks /*
|
|
|
4305 If non-nil, auto-saving is disabled when a buffer shrinks too much.
|
|
|
4306 This is to prevent you from losing your edits if you accidentally
|
|
|
4307 delete a large chunk of the buffer and don't notice it until too late.
|
|
|
4308 Saving the buffer normally turns auto-save back on.
|
|
|
4309 */ );
|
|
|
4310 disable_auto_save_when_buffer_shrinks = 1;
|
|
|
4311
|
|
|
4312 DEFVAR_LISP ("directory-sep-char", &Vdirectory_sep_char /*
|
|
|
4313 Directory separator character for built-in functions that return file names.
|
|
|
4314 The value should be either ?/ or ?\\ (any other value is treated as ?\\).
|
|
|
4315 This variable affects the built-in functions only on Windows,
|
|
|
4316 on other platforms, it is initialized so that Lisp code can find out
|
|
|
4317 what the normal separator is.
|
|
|
4318 */ );
|
|
442
|
4319 #ifdef WIN32_NATIVE
|
|
432
|
4320 Vdirectory_sep_char = make_char ('\\');
|
|
|
4321 #else
|
|
442
|
4322 Vdirectory_sep_char = make_char ('/');
|
|
432
|
4323 #endif
|
|
442
|
4324
|
|
|
4325 reinit_vars_of_fileio ();
|
|
428
|
4326 }
|
|
442
|
4327
|
|
|
4328 void
|
|
|
4329 reinit_vars_of_fileio (void)
|
|
|
4330 {
|
|
|
4331 /* We want temp_name_rand to be initialized to a value likely to be
|
|
|
4332 unique to the process, not to the executable. The danger is that
|
|
|
4333 two different XEmacs processes using the same binary on different
|
|
|
4334 machines creating temp files in the same directory will be
|
|
|
4335 unlucky enough to have the same pid. If we randomize using
|
|
|
4336 process startup time, then in practice they will be unlikely to
|
|
|
4337 collide. We use the microseconds field so that scripts that start
|
|
|
4338 simultaneous XEmacs processes on multiple machines will have less
|
|
|
4339 chance of collision. */
|
|
|
4340 {
|
|
|
4341 EMACS_TIME thyme;
|
|
|
4342
|
|
|
4343 EMACS_GET_TIME (thyme);
|
|
|
4344 temp_name_rand = (unsigned int) (EMACS_SECS (thyme) ^ EMACS_USECS (thyme));
|
|
|
4345 }
|
|
|
4346 }
|
