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0
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1 /* Lisp functions for making directory listings.
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2 Copyright (C) 1985, 1986, 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.30. */
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22
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23 #include <config.h>
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24 #include "lisp.h"
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25
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26 #include "buffer.h"
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27 #include "commands.h"
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28 #include "elhash.h"
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29 #include "regex.h"
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30
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31 #include "sysfile.h"
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32 #include "sysdir.h"
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33
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34 Lisp_Object Vcompletion_ignored_extensions;
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35
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36 Lisp_Object Qdirectory_files;
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37 Lisp_Object Qfile_name_completion;
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38 Lisp_Object Qfile_name_all_completions;
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39 Lisp_Object Qfile_attributes;
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40
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20
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41 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /*
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0
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42 Return a list of names of files in DIRECTORY.
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43 There are four optional arguments:
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44 If FULL is non-nil, absolute pathnames of the files are returned.
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45 If MATCH is non-nil, only pathnames containing that regexp are returned.
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46 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
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47 NOSORT is useful if you plan to sort the result yourself.
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48 If FILES-ONLY is the symbol t, then only the \"files\" in the directory
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49 will be returned; subdirectories will be excluded. If FILES-ONLY is not
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50 nil and not t, then only the subdirectories will be returned. Otherwise,
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51 if FILES-ONLY is nil (the default) then both files and subdirectories will
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52 be returned.
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20
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53 */
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54 (dirname, full, match, nosort, files_only))
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0
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55 {
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120
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56 /* This function can GC. GC checked 1997.04.06. */
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0
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57 DIR *d;
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58 Bytecount dirname_length;
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59 Lisp_Object list, name, dirfilename = Qnil;
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60 Lisp_Object handler;
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61 struct re_pattern_buffer *bufp;
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62
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70
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63 char statbuf [MAXNAMLEN+2];
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0
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64 char *statbuf_tail;
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2
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65 Lisp_Object tail_cons = Qnil;
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70
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66 char slashfilename[MAXNAMLEN+2];
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0
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67 char *filename = slashfilename;
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68
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120
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69 struct gcpro gcpro1, gcpro2, gcpro3;
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70 GCPRO3 (dirname, dirfilename, tail_cons);
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0
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71
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72 /* If the file name has special constructs in it,
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73 call the corresponding file handler. */
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74 handler = Ffind_file_name_handler (dirname, Qdirectory_files);
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75 if (!NILP (handler))
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76 {
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77 UNGCPRO;
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78 if (!NILP (files_only))
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79 return call6 (handler, Qdirectory_files, dirname, full, match, nosort,
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80 files_only);
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81 else
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82 return call5 (handler, Qdirectory_files, dirname, full, match,
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83 nosort);
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84 }
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85
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120
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86 /* #### why do we do Fexpand_file_name after file handlers here,
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87 but earlier everywhere else? */
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0
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88 dirname = Fexpand_file_name (dirname, Qnil);
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89 dirfilename = Fdirectory_file_name (dirname);
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90
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91 {
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92 /* XEmacs: this should come before the opendir() because it might error. */
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93 Lisp_Object name_as_dir = Ffile_name_as_directory (dirname);
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94 CHECK_STRING (name_as_dir);
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14
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95 memcpy (statbuf, ((char *) XSTRING_DATA (name_as_dir)),
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96 XSTRING_LENGTH (name_as_dir));
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97 statbuf_tail = statbuf + XSTRING_LENGTH (name_as_dir);
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0
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98 }
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99
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100 /* XEmacs: this should come after Ffile_name_as_directory() to avoid
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101 potential regexp cache smashage. This should come before the
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102 opendir() because it might signal an error.
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103 */
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104 if (!NILP (match))
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105 {
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106 CHECK_STRING (match);
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107
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108 /* MATCH might be a flawed regular expression. Rather than
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109 catching and signalling our own errors, we just call
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110 compile_pattern to do the work for us. */
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111 #ifdef VMS
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112 bufp =
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113 compile_pattern (match, 0,
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114 (char *) MIRROR_DOWNCASE_TABLE_AS_STRING
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115 (XBUFFER (Vbuffer_defaults)), 0, ERROR_ME);
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116 #else
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117 bufp = compile_pattern (match, 0, 0, 0, ERROR_ME);
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118 #endif
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119 }
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120
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121 /* Now *bufp is the compiled form of MATCH; don't call anything
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122 which might compile a new regexp until we're done with the loop! */
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123
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124 /* Do this opendir after anything which might signal an error; if
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125 an error is signalled while the directory stream is open, we
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126 have to make sure it gets closed, and setting up an
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127 unwind_protect to do so would be a pain. */
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14
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128 d = opendir ((char *) XSTRING_DATA (dirfilename));
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0
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129 if (! d)
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130 report_file_error ("Opening directory", list1 (dirname));
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131
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132 list = Qnil;
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133 tail_cons = Qnil;
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14
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134 dirname_length = XSTRING_LENGTH (dirname);
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0
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135 #ifndef VMS
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136 if (dirname_length == 0
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80
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137 || !IS_ANY_SEP (XSTRING_BYTE (dirname, dirname_length - 1)))
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0
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138 {
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139 *filename++ = DIRECTORY_SEP;
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140 dirname_length++;
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141 }
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142 #endif /* VMS */
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143
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144 /* Loop reading blocks */
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145 while (1)
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146 {
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147 DIRENTRY *dp = readdir (d);
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148 int len;
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149
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150 if (!dp) break;
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151 len = NAMLEN (dp);
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152 if (DIRENTRY_NONEMPTY (dp))
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153 {
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154 int result;
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155 Lisp_Object oinhibit_quit = Vinhibit_quit;
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156 strncpy (filename, dp->d_name, len);
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157 filename[len] = 0;
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158 /* re_search can now QUIT, so prevent it to avoid
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159 filedesc lossage */
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160 Vinhibit_quit = Qt;
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161 result = (NILP (match)
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162 || (0 <= re_search (bufp, filename, len, 0, len, 0)));
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163 Vinhibit_quit = oinhibit_quit;
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164 if (result)
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165 {
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166 if (!NILP (files_only))
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167 {
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168 int dir_p;
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169 struct stat st;
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170
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171 memcpy (statbuf_tail, filename, len);
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172 statbuf_tail [len] = 0;
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173
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174 if (stat (statbuf, &st) < 0)
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175 dir_p = 0;
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176 else
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177 dir_p = ((st.st_mode & S_IFMT) == S_IFDIR);
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178
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179 if (EQ (files_only, Qt) && dir_p)
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180 continue;
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181 else if (!EQ (files_only, Qt) && !dir_p)
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182 continue;
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183 }
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184
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185 if (!NILP (full))
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186 name = concat2 (dirname, build_string (slashfilename));
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187 else
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188 name = make_string ((Bufbyte *) filename, len);
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189
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190 if (NILP (tail_cons))
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191 {
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192 list = list1 (name);
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193 tail_cons = list;
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194 }
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195 else
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196 {
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197 XCDR (tail_cons) = list1 (name);
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198 tail_cons = XCDR (tail_cons);
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199 }
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200 }
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201 }
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202 }
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203 closedir (d);
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204 UNGCPRO;
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205 if (!NILP (nosort))
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206 return list;
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207 return Fsort (Fnreverse (list), Qstring_lessp);
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208 }
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209
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210 static Lisp_Object file_name_completion (Lisp_Object file,
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211 Lisp_Object dirname,
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212 int all_flag, int ver_flag);
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213
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20
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214 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
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0
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215 Complete file name FILE in directory DIR.
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216 Returns the longest string common to all filenames in DIR
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217 that start with FILE.
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218 If there is only one and FILE matches it exactly, returns t.
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219 Returns nil if DIR contains no name starting with FILE.
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220
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221 Filenames which end with any member of `completion-ignored-extensions'
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222 are not considered as possible completions for FILE unless there is no
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223 other possible completion. `completion-ignored-extensions' is not applied
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224 to the names of directories.
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20
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225 */
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226 (file, dirname))
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0
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227 {
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120
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228 /* This function can GC. GC checked 1996.04.06. */
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0
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229 Lisp_Object handler;
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230
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231 /* If the directory name has special constructs in it,
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232 call the corresponding file handler. */
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233 handler = Ffind_file_name_handler (dirname, Qfile_name_completion);
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234 if (!NILP (handler))
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235 return call3 (handler, Qfile_name_completion, file, dirname);
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236
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237 /* If the file name has special constructs in it,
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238 call the corresponding file handler. */
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239 handler = Ffind_file_name_handler (file, Qfile_name_completion);
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240 if (!NILP (handler))
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241 return call3 (handler, Qfile_name_completion, file, dirname);
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242
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243 return file_name_completion (file, dirname, 0, 0);
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244 }
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245
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20
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246 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
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0
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247 Return a list of all completions of file name FILE in directory DIR.
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248 These are all file names in directory DIR which begin with FILE.
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249
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250 Filenames which end with any member of `completion-ignored-extensions'
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251 are not considered as possible completions for FILE unless there is no
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252 other possible completion. `completion-ignored-extensions' is not applied
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253 to the names of directories.
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20
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254 */
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255 (file, dirname))
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0
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256 {
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120
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257 /* This function can GC. GC checked 1997.06.04. */
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0
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258 Lisp_Object handler;
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118
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259 struct gcpro gcpro1;
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0
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260
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118
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261 GCPRO1 (dirname);
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262 dirname = Fexpand_file_name (dirname, Qnil);
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0
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263 /* If the file name has special constructs in it,
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264 call the corresponding file handler. */
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265 handler = Ffind_file_name_handler (dirname, Qfile_name_all_completions);
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118
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266 UNGCPRO;
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0
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267 if (!NILP (handler))
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268 return call3 (handler, Qfile_name_all_completions, file,
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269 dirname);
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270
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271 return file_name_completion (file, dirname, 1, 0);
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272 }
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273
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274 static int
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275 file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp,
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276 struct stat *st_addr)
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277 {
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278 Bytecount len = NAMLEN (dp);
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14
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279 Bytecount pos = XSTRING_LENGTH (dirname);
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0
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280 int value;
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281 char *fullname = (char *) alloca (len + pos + 2);
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282
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14
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283 memcpy (fullname, XSTRING_DATA (dirname), pos);
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0
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284 #ifndef VMS
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285 if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
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286 fullname[pos++] = DIRECTORY_SEP;
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287 #endif
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288
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289 memcpy (fullname + pos, dp->d_name, len);
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290 fullname[pos + len] = 0;
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291
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292 #ifdef S_IFLNK
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293 /* We want to return success if a link points to a nonexistent file,
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294 but we want to return the status for what the link points to,
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295 in case it is a directory. */
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296 value = lstat (fullname, st_addr);
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297 if (S_ISLNK (st_addr->st_mode))
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298 stat (fullname, st_addr);
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299 #else
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300 value = stat (fullname, st_addr);
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301 #endif
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302 return (value);
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303 }
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304
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305 static Lisp_Object
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306 file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag,
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307 int ver_flag)
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308 {
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309 /* This function can GC */
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310 DIR *d = 0;
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311 int matchcount = 0;
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312 Lisp_Object bestmatch = Qnil;
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313 Charcount bestmatchsize = 0;
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314 struct stat st;
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315 int passcount;
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316 int speccount = specpdl_depth ();
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317 Charcount file_name_length;
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318 DIRENTRY *((*readfunc) (DIR *)) = readdir;
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319 struct gcpro gcpro1, gcpro2, gcpro3;
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320
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321 GCPRO3 (file, dirname, bestmatch);
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322
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323 CHECK_STRING (file);
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324
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325 #ifdef VMS
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326 /* Filename completion on VMS ignores case, since VMS filesys does. */
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327 specbind (Qcompletion_ignore_case, Qt);
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328
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329 if (ver_flag)
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330 readfunc = readdirver;
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331 #endif /* VMS */
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332
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333 #ifdef FILE_SYSTEM_CASE
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334 file = FILE_SYSTEM_CASE (file);
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335 #endif
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336 dirname = Fexpand_file_name (dirname, Qnil);
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337 file_name_length = string_char_length (XSTRING (file));
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338
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339 /* With passcount = 0, ignore files that end in an ignored extension.
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340 If nothing found then try again with passcount = 1, don't ignore them.
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341 If looking for all completions, start with passcount = 1,
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342 so always take even the ignored ones.
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343
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344 ** It would not actually be helpful to the user to ignore any possible
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345 completions when making a list of them.** */
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346
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347 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
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348 {
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16
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349 d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (dirname)));
|
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0
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350 if (!d)
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351 report_file_error ("Opening directory", list1 (dirname));
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352
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353 /* Loop reading blocks */
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354 while (1)
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355 {
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356 DIRENTRY *dp;
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357 Bytecount len;
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358 /* scmp() works in characters, not bytes, so we have to compute
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359 this value: */
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360 Charcount cclen;
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361 int directoryp;
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362 int ignored_extension_p = 0;
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363 Bufbyte *d_name;
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364
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365 dp = (*readfunc) (d);
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366 if (!dp) break;
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367
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368 d_name = (Bufbyte *) dp->d_name;
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369 len = NAMLEN (dp);
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2
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370 cclen = bytecount_to_charcount (d_name, len);
|
|
0
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371
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372 /* Can't just use QUIT because we have to make sure the file
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373 descriptor gets closed. */
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374 if (QUITP)
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375 {
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376 closedir (d);
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377 signal_quit ();
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|
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378 }
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379
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|
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380 if (! DIRENTRY_NONEMPTY (dp)
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381 || cclen < file_name_length
|
|
14
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382 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
|
|
0
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383 continue;
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384
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|
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385 if (file_name_completion_stat (dirname, dp, &st) < 0)
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|
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386 continue;
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387
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|
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388 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
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|
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389 if (directoryp)
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|
|
390 {
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391 #ifndef TRIVIAL_DIRECTORY_ENTRY
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|
|
392 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
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|
|
393 #endif
|
|
|
394 /* "." and ".." are never interesting as completions, but are
|
|
2
|
395 actually in the way in a directory containing only one file. */
|
|
0
|
396 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
|
|
|
397 continue;
|
|
|
398 }
|
|
|
399 else
|
|
|
400 {
|
|
|
401 /* Compare extensions-to-be-ignored against end of this file name */
|
|
2
|
402 /* if name is not an exact match against specified string. */
|
|
0
|
403 if (!passcount && cclen > file_name_length)
|
|
|
404 {
|
|
|
405 Lisp_Object tem;
|
|
|
406 /* and exit this for loop if a match is found */
|
|
|
407 for (tem = Vcompletion_ignored_extensions;
|
|
|
408 CONSP (tem);
|
|
|
409 tem = XCDR (tem))
|
|
|
410 {
|
|
|
411 Lisp_Object elt = XCAR (tem);
|
|
|
412 Charcount skip;
|
|
|
413
|
|
|
414 if (!STRINGP (elt)) continue;
|
|
|
415 skip = cclen - string_char_length (XSTRING (elt));
|
|
|
416 if (skip < 0) continue;
|
|
|
417
|
|
|
418 if (0 > scmp (charptr_n_addr (d_name, skip),
|
|
14
|
419 XSTRING_DATA (elt),
|
|
0
|
420 string_char_length (XSTRING (elt))))
|
|
|
421 {
|
|
|
422 ignored_extension_p = 1;
|
|
|
423 break;
|
|
|
424 }
|
|
|
425 }
|
|
|
426 }
|
|
|
427 }
|
|
|
428
|
|
|
429 /* If an ignored-extensions match was found,
|
|
|
430 don't process this name as a completion. */
|
|
|
431 if (!passcount && ignored_extension_p)
|
|
|
432 continue;
|
|
|
433
|
|
2
|
434 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, cclen))
|
|
0
|
435 continue;
|
|
|
436
|
|
|
437 /* Update computation of how much all possible completions match */
|
|
|
438 matchcount++;
|
|
|
439
|
|
|
440 if (all_flag || NILP (bestmatch))
|
|
|
441 {
|
|
|
442 Lisp_Object name = Qnil;
|
|
|
443 struct gcpro ngcpro1;
|
|
|
444 NGCPRO1 (name);
|
|
|
445 /* This is a possible completion */
|
|
2
|
446 name = make_string (d_name, len);
|
|
|
447 if (directoryp) /* Completion is a directory; end it with '/' */
|
|
|
448 name = Ffile_name_as_directory (name);
|
|
0
|
449 if (all_flag)
|
|
|
450 {
|
|
|
451 bestmatch = Fcons (name, bestmatch);
|
|
|
452 }
|
|
|
453 else
|
|
|
454 {
|
|
|
455 bestmatch = name;
|
|
|
456 bestmatchsize = string_char_length (XSTRING (name));
|
|
|
457 }
|
|
|
458 NUNGCPRO;
|
|
|
459 }
|
|
|
460 else
|
|
|
461 {
|
|
|
462 Charcount compare = min (bestmatchsize, cclen);
|
|
14
|
463 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
0
|
464 Bufbyte *p2 = d_name;
|
|
|
465 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
466
|
|
|
467 if (matchsize < 0)
|
|
|
468 matchsize = compare;
|
|
|
469 if (completion_ignore_case)
|
|
|
470 {
|
|
|
471 /* If this is an exact match except for case,
|
|
|
472 use it as the best match rather than one that is not
|
|
|
473 an exact match. This way, we get the case pattern
|
|
|
474 of the actual match. */
|
|
2
|
475 if ((matchsize == cclen
|
|
0
|
476 && matchsize + !!directoryp
|
|
|
477 < string_char_length (XSTRING (bestmatch)))
|
|
|
478 ||
|
|
|
479 /* If there is no exact match ignoring case,
|
|
|
480 prefer a match that does not change the case
|
|
|
481 of the input. */
|
|
2
|
482 (((matchsize == cclen)
|
|
0
|
483 ==
|
|
|
484 (matchsize + !!directoryp
|
|
|
485 == string_char_length (XSTRING (bestmatch))))
|
|
|
486 /* If there is more than one exact match aside from
|
|
|
487 case, and one of them is exact including case,
|
|
|
488 prefer that one. */
|
|
14
|
489 && 0 > scmp_1 (p2, XSTRING_DATA (file),
|
|
0
|
490 file_name_length, 0)
|
|
14
|
491 && 0 <= scmp_1 (p1, XSTRING_DATA (file),
|
|
0
|
492 file_name_length, 0)))
|
|
|
493 {
|
|
2
|
494 bestmatch = make_string (d_name, len);
|
|
0
|
495 if (directoryp)
|
|
2
|
496 bestmatch = Ffile_name_as_directory (bestmatch);
|
|
0
|
497 }
|
|
|
498 }
|
|
|
499
|
|
|
500 /* If this dirname all matches,
|
|
|
501 see if implicit following slash does too. */
|
|
|
502 if (directoryp
|
|
|
503 && compare == matchsize
|
|
|
504 && bestmatchsize > matchsize
|
|
|
505 && IS_ANY_SEP (charptr_emchar_n (p1, matchsize)))
|
|
|
506 matchsize++;
|
|
|
507 bestmatchsize = matchsize;
|
|
|
508 }
|
|
|
509 }
|
|
|
510 closedir (d);
|
|
|
511 }
|
|
|
512
|
|
|
513 unbind_to (speccount, Qnil);
|
|
|
514
|
|
|
515 UNGCPRO;
|
|
|
516
|
|
|
517 if (all_flag || NILP (bestmatch))
|
|
|
518 return bestmatch;
|
|
|
519 if (matchcount == 1 && bestmatchsize == file_name_length)
|
|
|
520 return Qt;
|
|
|
521 return Fsubstring (bestmatch, make_int (0), make_int (bestmatchsize));
|
|
|
522 }
|
|
|
523
|
|
|
524
|
|
|
525 Lisp_Object
|
|
|
526 make_directory_hash_table (char *path)
|
|
|
527 {
|
|
|
528 DIR *d;
|
|
|
529 DIRENTRY *dp;
|
|
|
530 Bytecount len;
|
|
|
531 Lisp_Object hash = make_lisp_hashtable (100, HASHTABLE_NONWEAK,
|
|
|
532 HASHTABLE_EQUAL);
|
|
|
533 if ((d = opendir (path)))
|
|
|
534 {
|
|
|
535 while ((dp = readdir (d)))
|
|
|
536 {
|
|
|
537 len = NAMLEN (dp);
|
|
|
538 if (DIRENTRY_NONEMPTY (dp))
|
|
|
539 Fputhash (make_string ((Bufbyte *) dp->d_name, len), Qt, hash);
|
|
|
540 }
|
|
|
541 closedir (d);
|
|
|
542 }
|
|
|
543 return hash;
|
|
|
544 }
|
|
|
545
|
|
|
546 #ifdef VMS
|
|
|
547
|
|
20
|
548 DEFUN ("file-name-all-versions", Ffile_name_all_versions, 2, 2, 0, /*
|
|
0
|
549 Return a list of all versions of file name FILE in directory DIR.
|
|
20
|
550 */
|
|
|
551 (file, dirname))
|
|
0
|
552 {
|
|
|
553 /* This function can GC */
|
|
|
554 return file_name_completion (file, dirname, 1, 1);
|
|
|
555 }
|
|
|
556
|
|
20
|
557 DEFUN ("file-version-limit", Ffile_version_limit, 1, 1, 0, /*
|
|
0
|
558 Return the maximum number of versions allowed for FILE.
|
|
|
559 Returns nil if the file cannot be opened or if there is no version limit.
|
|
20
|
560 */
|
|
|
561 (filename))
|
|
0
|
562 {
|
|
|
563 /* This function can GC */
|
|
|
564 Lisp_Object retval;
|
|
|
565 struct FAB fab;
|
|
|
566 struct RAB rab;
|
|
|
567 struct XABFHC xabfhc;
|
|
|
568 int status;
|
|
|
569
|
|
|
570 filename = Fexpand_file_name (filename, Qnil);
|
|
|
571 CHECK_STRING (filename);
|
|
|
572 fab = cc$rms_fab;
|
|
|
573 xabfhc = cc$rms_xabfhc;
|
|
14
|
574 fab.fab$l_fna = XSTRING_DATA (filename);
|
|
0
|
575 fab.fab$b_fns = strlen (fab.fab$l_fna);
|
|
|
576 fab.fab$l_xab = (char *) &xabfhc;
|
|
|
577 status = sys$open (&fab, 0, 0);
|
|
|
578 if (status != RMS$_NORMAL) /* Probably non-existent file */
|
|
|
579 return Qnil;
|
|
|
580 sys$close (&fab, 0, 0);
|
|
|
581 if (xabfhc.xab$w_verlimit == 32767)
|
|
|
582 return Qnil; /* No version limit */
|
|
|
583 else
|
|
|
584 return make_int (xabfhc.xab$w_verlimit);
|
|
|
585 }
|
|
|
586
|
|
|
587 #endif /* VMS */
|
|
|
588
|
|
|
589
|
|
|
590 Lisp_Object
|
|
|
591 wasteful_word_to_lisp (unsigned int item)
|
|
|
592 {
|
|
|
593 /* Compatibility: in other versions, file-attributes returns a LIST
|
|
|
594 of two 16 bit integers... */
|
|
|
595 Lisp_Object cons = word_to_lisp (item);
|
|
|
596 XCDR (cons) = Fcons (XCDR (cons), Qnil);
|
|
|
597 return cons;
|
|
|
598 }
|
|
|
599
|
|
20
|
600 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 0, /*
|
|
0
|
601 Return a list of attributes of file FILENAME.
|
|
|
602 Value is nil if specified file cannot be opened.
|
|
|
603 Otherwise, list elements are:
|
|
|
604 0. t for directory, string (name linked to) for symbolic link, or nil.
|
|
|
605 1. Number of links to file.
|
|
|
606 2. File uid.
|
|
|
607 3. File gid.
|
|
|
608 4. Last access time, as a list of two integers.
|
|
|
609 First integer has high-order 16 bits of time, second has low 16 bits.
|
|
|
610 5. Last modification time, likewise.
|
|
|
611 6. Last status change time, likewise.
|
|
|
612 7. Size in bytes. (-1, if number is out of range).
|
|
|
613 8. File modes, as a string of ten letters or dashes as in ls -l.
|
|
|
614 9. t iff file's gid would change if file were deleted and recreated.
|
|
|
615 10. inode number.
|
|
|
616 11. Device number.
|
|
|
617
|
|
|
618 If file does not exist, returns nil.
|
|
20
|
619 */
|
|
|
620 (filename))
|
|
0
|
621 {
|
|
120
|
622 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
623 Lisp_Object values[12];
|
|
|
624 Lisp_Object dirname = Qnil;
|
|
|
625 struct stat s;
|
|
|
626 char modes[10];
|
|
|
627 Lisp_Object handler;
|
|
|
628 struct gcpro gcpro1, gcpro2;
|
|
|
629
|
|
120
|
630 GCPRO2 (filename, dirname);
|
|
0
|
631 filename = Fexpand_file_name (filename, Qnil);
|
|
|
632
|
|
|
633 /* If the file name has special constructs in it,
|
|
|
634 call the corresponding file handler. */
|
|
|
635 handler = Ffind_file_name_handler (filename, Qfile_attributes);
|
|
|
636 if (!NILP (handler))
|
|
120
|
637 {
|
|
|
638 UNGCPRO;
|
|
|
639 return call2 (handler, Qfile_attributes, filename);
|
|
|
640 }
|
|
0
|
641
|
|
14
|
642 if (lstat ((char *) XSTRING_DATA (filename), &s) < 0)
|
|
120
|
643 {
|
|
|
644 UNGCPRO;
|
|
|
645 return Qnil;
|
|
|
646 }
|
|
0
|
647
|
|
|
648 #ifdef BSD4_2
|
|
|
649 dirname = Ffile_name_directory (filename);
|
|
|
650 #endif
|
|
|
651
|
|
|
652 #ifdef MSDOS
|
|
|
653 {
|
|
14
|
654 char *tmpnam = (char *) XSTRING_DATA (Ffile_name_nondirectory (filename));
|
|
0
|
655 int l = strlen (tmpnam);
|
|
|
656
|
|
|
657 if (l >= 5
|
|
|
658 && S_ISREG (s.st_mode)
|
|
14
|
659 && (stricmp (&tmpnam[l - 4], ".com") == 0 ||
|
|
|
660 stricmp (&tmpnam[l - 4], ".exe") == 0 ||
|
|
|
661 stricmp (&tmpnam[l - 4], ".bat") == 0))
|
|
0
|
662 {
|
|
|
663 s.st_mode |= S_IEXEC;
|
|
|
664 }
|
|
|
665 }
|
|
|
666 #endif /* MSDOS */
|
|
|
667
|
|
|
668 switch (s.st_mode & S_IFMT)
|
|
|
669 {
|
|
|
670 default:
|
|
|
671 values[0] = Qnil;
|
|
|
672 break;
|
|
|
673 case S_IFDIR:
|
|
|
674 values[0] = Qt;
|
|
|
675 break;
|
|
|
676 #ifdef S_IFLNK
|
|
|
677 case S_IFLNK:
|
|
|
678 values[0] = Ffile_symlink_p (filename);
|
|
|
679 break;
|
|
|
680 #endif
|
|
|
681 }
|
|
|
682 values[1] = make_int (s.st_nlink);
|
|
|
683 values[2] = make_int (s.st_uid);
|
|
|
684 values[3] = make_int (s.st_gid);
|
|
|
685 values[4] = wasteful_word_to_lisp (s.st_atime);
|
|
|
686 values[5] = wasteful_word_to_lisp (s.st_mtime);
|
|
|
687 values[6] = wasteful_word_to_lisp (s.st_ctime);
|
|
|
688 values[7] = make_int ((EMACS_INT) s.st_size);
|
|
|
689 /* If the size is out of range, give back -1. */
|
|
|
690 /* #### Fix when Emacs gets bignums! */
|
|
|
691 if (XINT (values[7]) != s.st_size)
|
|
|
692 XSETINT (values[7], -1);
|
|
|
693 filemodestring (&s, modes);
|
|
|
694 values[8] = make_string ((Bufbyte *) modes, 10);
|
|
|
695 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
|
|
|
696 {
|
|
|
697 struct stat sdir;
|
|
|
698
|
|
14
|
699 if (!NILP (dirname) && stat ((char *) XSTRING_DATA (dirname), &sdir) == 0)
|
|
0
|
700 values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
|
|
|
701 else /* if we can't tell, assume worst */
|
|
|
702 values[9] = Qt;
|
|
|
703 }
|
|
|
704 #else /* file gid will be egid */
|
|
|
705 values[9] = (s.st_gid != getegid ()) ? Qt : Qnil;
|
|
|
706 #endif /* BSD4_2 or BSD4_3 */
|
|
|
707 values[10] = make_int (s.st_ino);
|
|
|
708 values[11] = make_int (s.st_dev);
|
|
|
709 UNGCPRO;
|
|
|
710 return Flist (countof (values), values);
|
|
|
711 }
|
|
|
712
|
|
|
713
|
|
|
714 /************************************************************************/
|
|
|
715 /* initialization */
|
|
|
716 /************************************************************************/
|
|
|
717
|
|
|
718 void
|
|
|
719 syms_of_dired (void)
|
|
|
720 {
|
|
|
721 defsymbol (&Qdirectory_files, "directory-files");
|
|
|
722 defsymbol (&Qfile_name_completion, "file-name-completion");
|
|
|
723 defsymbol (&Qfile_name_all_completions, "file-name-all-completions");
|
|
|
724 defsymbol (&Qfile_attributes, "file-attributes");
|
|
|
725
|
|
20
|
726 DEFSUBR (Fdirectory_files);
|
|
|
727 DEFSUBR (Ffile_name_completion);
|
|
0
|
728 #ifdef VMS
|
|
20
|
729 DEFSUBR (Ffile_name_all_versions);
|
|
|
730 DEFSUBR (Ffile_version_limit);
|
|
0
|
731 #endif /* VMS */
|
|
20
|
732 DEFSUBR (Ffile_name_all_completions);
|
|
|
733 DEFSUBR (Ffile_attributes);
|
|
0
|
734 }
|
|
|
735
|
|
|
736 void
|
|
|
737 vars_of_dired (void)
|
|
|
738 {
|
|
|
739 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /*
|
|
|
740 *Completion ignores filenames ending in any string in this list.
|
|
|
741 This variable does not affect lists of possible completions,
|
|
|
742 but does affect the commands that actually do completions.
|
|
|
743 It is used by the functions `file-name-completion' and
|
|
|
744 `file-name-all-completions'.
|
|
|
745 */ );
|
|
|
746 Vcompletion_ignored_extensions = Qnil;
|
|
|
747 }
|
