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428
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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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442
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26 #include "sysfile.h"
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27 #include "sysdir.h"
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28 #include "systime.h"
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29 #include "sysdep.h"
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30 #include "syspwd.h"
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428
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31 #include "buffer.h"
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32 #include "commands.h"
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33 #include "elhash.h"
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34 #include "regex.h"
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35 #include "opaque.h"
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460
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36 #include "syntax.h"
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428
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37
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528
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38 #ifdef WIN32_NATIVE
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39 #include "syswindows.h"
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40 #endif
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41
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428
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42 Lisp_Object Vcompletion_ignored_extensions;
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43 Lisp_Object Qdirectory_files;
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44 Lisp_Object Qfile_name_completion;
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45 Lisp_Object Qfile_name_all_completions;
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46 Lisp_Object Qfile_attributes;
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47
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48 static Lisp_Object
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49 close_directory_unwind (Lisp_Object unwind_obj)
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50 {
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51 DIR *d = (DIR *)get_opaque_ptr (unwind_obj);
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52 closedir (d);
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53 free_opaque_ptr (unwind_obj);
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54 return Qnil;
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55 }
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56
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57 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /*
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58 Return a list of names of files in DIRECTORY.
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59 There are four optional arguments:
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60 If FULL is non-nil, absolute pathnames of the files are returned.
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61 If MATCH is non-nil, only pathnames containing that regexp are returned.
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62 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
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63 NOSORT is useful if you plan to sort the result yourself.
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64 If FILES-ONLY is the symbol t, then only the "files" in the directory
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65 will be returned; subdirectories will be excluded. If FILES-ONLY is not
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66 nil and not t, then only the subdirectories will be returned. Otherwise,
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67 if FILES-ONLY is nil (the default) then both files and subdirectories will
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68 be returned.
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69 */
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70 (directory, full, match, nosort, files_only))
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71 {
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72 /* This function can GC */
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73 DIR *d;
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74 Lisp_Object list = Qnil;
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75 Bytecount directorylen;
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76 Lisp_Object handler;
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77 struct re_pattern_buffer *bufp = NULL;
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78 int speccount = specpdl_depth ();
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79 char *statbuf, *statbuf_tail;
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80
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81 struct gcpro gcpro1, gcpro2;
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82 GCPRO2 (directory, list);
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83
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84 /* If the file name has special constructs in it,
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85 call the corresponding file handler. */
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86 handler = Ffind_file_name_handler (directory, Qdirectory_files);
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87 if (!NILP (handler))
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88 {
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89 UNGCPRO;
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90 if (!NILP (files_only))
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91 return call6 (handler, Qdirectory_files, directory, full, match,
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92 nosort, files_only);
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93 else
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94 return call5 (handler, Qdirectory_files, directory, full, match,
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95 nosort);
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96 }
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97
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98 /* #### why do we do Fexpand_file_name after file handlers here,
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99 but earlier everywhere else? */
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100 directory = Fexpand_file_name (directory, Qnil);
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101 directory = Ffile_name_as_directory (directory);
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102 directorylen = XSTRING_LENGTH (directory);
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103
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104 statbuf = (char *)alloca (directorylen + MAXNAMLEN + 1);
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105 memcpy (statbuf, XSTRING_DATA (directory), directorylen);
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106 statbuf_tail = statbuf + directorylen;
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107
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108 /* XEmacs: this should come after Ffile_name_as_directory() to avoid
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109 potential regexp cache smashage. It comes before the opendir()
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110 because it might signal an error. */
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111 if (!NILP (match))
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112 {
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113 CHECK_STRING (match);
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114
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115 /* MATCH might be a flawed regular expression. Rather than
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116 catching and signalling our own errors, we just call
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117 compile_pattern to do the work for us. */
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446
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118 bufp = compile_pattern (match, 0, Qnil, 0, ERROR_ME);
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428
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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.
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125 NOTE: the above comment is old; previously, there was no
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126 unwind-protection in case of error, but now there is. */
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127 d = opendir ((char *) XSTRING_DATA (directory));
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128 if (!d)
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563
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129 report_file_error ("Opening directory", directory);
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428
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130
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460
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131 regex_match_object = Qt;
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132 regex_emacs_buffer = current_buffer;
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133
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428
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134 record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d));
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135
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136 /* Loop reading blocks */
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137 while (1)
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138 {
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139 DIRENTRY *dp = readdir (d);
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140 int len;
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141
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142 if (!dp)
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143 break;
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144 len = NAMLEN (dp);
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145 if (DIRENTRY_NONEMPTY (dp)
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146 && (NILP (match)
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147 || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))))
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148 {
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149 if (!NILP (files_only))
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150 {
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151 struct stat st;
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152 int dir_p = 0;
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153
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154 memcpy (statbuf_tail, dp->d_name, len);
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155 statbuf_tail[len] = 0;
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156
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442
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157 if (xemacs_stat (statbuf, &st) == 0
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428
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158 && (st.st_mode & S_IFMT) == S_IFDIR)
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159 dir_p = 1;
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160
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161 if (EQ (files_only, Qt) && dir_p)
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162 continue;
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163 else if (!EQ (files_only, Qt) && !dir_p)
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164 continue;
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165 }
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166
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167 {
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168 Lisp_Object name =
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665
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169 make_string ((Intbyte *)dp->d_name, len);
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428
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170 if (!NILP (full))
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171 name = concat2 (directory, name);
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172
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173 list = Fcons (name, list);
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174 }
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175 }
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176 }
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177 unbind_to (speccount, Qnil); /* This will close the dir */
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178
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179 if (NILP (nosort))
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180 list = Fsort (Fnreverse (list), Qstring_lessp);
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181
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182 RETURN_UNGCPRO (list);
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183 }
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184
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185 static Lisp_Object file_name_completion (Lisp_Object file,
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186 Lisp_Object directory,
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187 int all_flag, int ver_flag);
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188
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189 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
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444
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190 Complete file name PARTIAL-FILENAME in directory DIRECTORY.
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191 Return the longest prefix common to all file names in DIRECTORY
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192 that start with PARTIAL-FILENAME.
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193 If there is only one and PARTIAL-FILENAME matches it exactly, return t.
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194 Return nil if DIRECTORY contains no name starting with PARTIAL-FILENAME.
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428
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195
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444
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196 File names which end with any member of `completion-ignored-extensions'
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197 are not considered as possible completions for PARTIAL-FILENAME unless
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198 there is no other possible completion. `completion-ignored-extensions'
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199 is not applied to the names of directories.
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428
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200 */
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444
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201 (partial_filename, directory))
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428
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202 {
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203 /* This function can GC. GC checked 1996.04.06. */
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204 Lisp_Object handler;
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205
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206 /* If the directory name has special constructs in it,
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207 call the corresponding file handler. */
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208 handler = Ffind_file_name_handler (directory, Qfile_name_completion);
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209 if (!NILP (handler))
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444
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210 return call3 (handler, Qfile_name_completion, partial_filename, directory);
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428
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211
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212 /* If the file name has special constructs in it,
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213 call the corresponding file handler. */
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444
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214 handler = Ffind_file_name_handler (partial_filename, Qfile_name_completion);
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428
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215 if (!NILP (handler))
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444
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216 return call3 (handler, Qfile_name_completion, partial_filename, directory);
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428
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217
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444
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218 return file_name_completion (partial_filename, directory, 0, 0);
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428
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219 }
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220
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221 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
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444
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222 Return a list of all completions of PARTIAL-FILENAME in DIRECTORY.
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223 These are all file names in DIRECTORY which begin with PARTIAL-FILENAME.
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428
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224
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225 File names which end with any member of `completion-ignored-extensions'
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444
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226 are not considered as possible completions for PARTIAL-FILENAME unless
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227 there is no other possible completion. `completion-ignored-extensions'
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228 is not applied to the names of directories.
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428
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229 */
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444
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230 (partial_filename, directory))
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428
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231 {
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232 /* This function can GC. GC checked 1997.06.04. */
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233 Lisp_Object handler;
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234 struct gcpro gcpro1;
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235
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236 GCPRO1 (directory);
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237 directory = Fexpand_file_name (directory, Qnil);
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238 /* If the file name has special constructs in it,
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239 call the corresponding file handler. */
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240 handler = Ffind_file_name_handler (directory, Qfile_name_all_completions);
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241 UNGCPRO;
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242 if (!NILP (handler))
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444
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243 return call3 (handler, Qfile_name_all_completions, partial_filename,
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428
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244 directory);
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245
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444
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246 return file_name_completion (partial_filename, directory, 1, 0);
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428
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247 }
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248
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249 static int
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250 file_name_completion_stat (Lisp_Object directory, DIRENTRY *dp,
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251 struct stat *st_addr)
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252 {
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253 Bytecount len = NAMLEN (dp);
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254 Bytecount pos = XSTRING_LENGTH (directory);
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255 int value;
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256 char *fullname = (char *) alloca (len + pos + 2);
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257
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258 memcpy (fullname, XSTRING_DATA (directory), pos);
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259 if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
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260 fullname[pos++] = DIRECTORY_SEP;
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261
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262 memcpy (fullname + pos, dp->d_name, len);
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263 fullname[pos + len] = 0;
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264
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265 #ifdef S_IFLNK
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266 /* We want to return success if a link points to a nonexistent file,
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267 but we want to return the status for what the link points to,
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268 in case it is a directory. */
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269 value = lstat (fullname, st_addr);
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270 if (S_ISLNK (st_addr->st_mode))
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442
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271 xemacs_stat (fullname, st_addr);
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428
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272 #else
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442
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273 value = xemacs_stat (fullname, st_addr);
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428
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274 #endif
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275 return value;
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276 }
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277
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278 static Lisp_Object
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279 file_name_completion_unwind (Lisp_Object locative)
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280 {
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281 DIR *d;
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282 Lisp_Object obj = XCAR (locative);
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283
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284 if (!NILP (obj))
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285 {
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286 d = (DIR *)get_opaque_ptr (obj);
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287 closedir (d);
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288 free_opaque_ptr (obj);
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|
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289 }
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290 free_cons (XCONS (locative));
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291 return Qnil;
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|
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292 }
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293
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294 static Lisp_Object
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295 file_name_completion (Lisp_Object file, Lisp_Object directory, int all_flag,
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296 int ver_flag)
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|
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297 {
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298 /* This function can GC */
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299 DIR *d = 0;
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300 int matchcount = 0;
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301 Lisp_Object bestmatch = Qnil;
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302 Charcount bestmatchsize = 0;
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303 struct stat st;
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304 int passcount;
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305 int speccount = specpdl_depth ();
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306 Charcount file_name_length;
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307 Lisp_Object locative;
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308 struct gcpro gcpro1, gcpro2, gcpro3;
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309
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310 GCPRO3 (file, directory, bestmatch);
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311
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|
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312 CHECK_STRING (file);
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313
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442
|
314 #ifdef WIN32_NATIVE
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|
428
|
315 /* Filename completion on Windows ignores case, since Windows
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|
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316 filesystems do. */
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|
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317 specbind (Qcompletion_ignore_case, Qt);
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|
442
|
318 #endif /* WIN32_NATIVE */
|
|
428
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319
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|
|
320 #ifdef FILE_SYSTEM_CASE
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|
|
321 file = FILE_SYSTEM_CASE (file);
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|
|
322 #endif
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323 directory = Fexpand_file_name (directory, Qnil);
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|
|
324 file_name_length = XSTRING_CHAR_LENGTH (file);
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325
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|
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326 /* With passcount = 0, ignore files that end in an ignored extension.
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|
327 If nothing found then try again with passcount = 1, don't ignore them.
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328 If looking for all completions, start with passcount = 1,
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|
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329 so always take even the ignored ones.
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|
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330
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|
|
331 ** It would not actually be helpful to the user to ignore any possible
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|
|
332 completions when making a list of them.** */
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|
|
333
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|
|
334 /* We cannot use close_directory_unwind() because we change the
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|
|
335 directory. The old code used to just avoid signaling errors, and
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|
|
336 call closedir, but it was wrong, because it made sane handling of
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|
|
337 QUIT impossible and, besides, various utility functions like
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|
|
338 regexp_ignore_completion_p can signal errors. */
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|
|
339 locative = noseeum_cons (Qnil, Qnil);
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|
|
340 record_unwind_protect (file_name_completion_unwind, locative);
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|
|
341
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|
|
342 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
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|
|
343 {
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|
|
344 d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (directory)));
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|
|
345 if (!d)
|
|
563
|
346 report_file_error ("Opening directory", directory);
|
|
428
|
347 XCAR (locative) = make_opaque_ptr ((void *)d);
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|
|
348
|
|
|
349 /* Loop reading blocks */
|
|
|
350 while (1)
|
|
|
351 {
|
|
|
352 DIRENTRY *dp;
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|
|
353 Bytecount len;
|
|
|
354 /* scmp() works in characters, not bytes, so we have to compute
|
|
|
355 this value: */
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|
|
356 Charcount cclen;
|
|
|
357 int directoryp;
|
|
|
358 int ignored_extension_p = 0;
|
|
665
|
359 Intbyte *d_name;
|
|
428
|
360
|
|
|
361 dp = readdir (d);
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|
|
362 if (!dp) break;
|
|
|
363
|
|
665
|
364 /* Cast to Intbyte* is OK, as readdir() Mule-encapsulates. */
|
|
|
365 d_name = (Intbyte *) dp->d_name;
|
|
428
|
366 len = NAMLEN (dp);
|
|
|
367 cclen = bytecount_to_charcount (d_name, len);
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|
|
368
|
|
|
369 QUIT;
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|
|
370
|
|
|
371 if (! DIRENTRY_NONEMPTY (dp)
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|
|
372 || cclen < file_name_length
|
|
|
373 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
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|
|
374 continue;
|
|
|
375
|
|
|
376 if (file_name_completion_stat (directory, dp, &st) < 0)
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|
|
377 continue;
|
|
|
378
|
|
|
379 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
380 if (directoryp)
|
|
|
381 {
|
|
|
382 #ifndef TRIVIAL_DIRECTORY_ENTRY
|
|
|
383 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
|
|
|
384 #endif
|
|
|
385 /* "." and ".." are never interesting as completions, but are
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|
|
386 actually in the way in a directory containing only one file. */
|
|
|
387 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
|
|
|
388 continue;
|
|
|
389 }
|
|
|
390 else
|
|
|
391 {
|
|
|
392 /* Compare extensions-to-be-ignored against end of this file name */
|
|
|
393 /* if name is not an exact match against specified string. */
|
|
|
394 if (!passcount && cclen > file_name_length)
|
|
|
395 {
|
|
|
396 Lisp_Object tem;
|
|
|
397 /* and exit this for loop if a match is found */
|
|
|
398 EXTERNAL_LIST_LOOP (tem, Vcompletion_ignored_extensions)
|
|
|
399 {
|
|
|
400 Lisp_Object elt = XCAR (tem);
|
|
|
401 Charcount skip;
|
|
|
402
|
|
|
403 CHECK_STRING (elt);
|
|
|
404
|
|
|
405 skip = cclen - XSTRING_CHAR_LENGTH (elt);
|
|
|
406 if (skip < 0) continue;
|
|
|
407
|
|
|
408 if (0 > scmp (charptr_n_addr (d_name, skip),
|
|
|
409 XSTRING_DATA (elt),
|
|
|
410 XSTRING_CHAR_LENGTH (elt)))
|
|
|
411 {
|
|
|
412 ignored_extension_p = 1;
|
|
|
413 break;
|
|
|
414 }
|
|
|
415 }
|
|
|
416 }
|
|
|
417 }
|
|
|
418
|
|
|
419 /* If an ignored-extensions match was found,
|
|
|
420 don't process this name as a completion. */
|
|
|
421 if (!passcount && ignored_extension_p)
|
|
|
422 continue;
|
|
|
423
|
|
|
424 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, cclen))
|
|
|
425 continue;
|
|
|
426
|
|
|
427 /* Update computation of how much all possible completions match */
|
|
|
428 matchcount++;
|
|
|
429
|
|
|
430 if (all_flag || NILP (bestmatch))
|
|
|
431 {
|
|
|
432 Lisp_Object name = Qnil;
|
|
|
433 struct gcpro ngcpro1;
|
|
|
434 NGCPRO1 (name);
|
|
|
435 /* This is a possible completion */
|
|
|
436 name = make_string (d_name, len);
|
|
|
437 if (directoryp) /* Completion is a directory; end it with '/' */
|
|
|
438 name = Ffile_name_as_directory (name);
|
|
|
439 if (all_flag)
|
|
|
440 {
|
|
|
441 bestmatch = Fcons (name, bestmatch);
|
|
|
442 }
|
|
|
443 else
|
|
|
444 {
|
|
|
445 bestmatch = name;
|
|
|
446 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
447 }
|
|
|
448 NUNGCPRO;
|
|
|
449 }
|
|
|
450 else
|
|
|
451 {
|
|
|
452 Charcount compare = min (bestmatchsize, cclen);
|
|
665
|
453 Intbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
454 Intbyte *p2 = d_name;
|
|
428
|
455 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
456
|
|
|
457 if (matchsize < 0)
|
|
|
458 matchsize = compare;
|
|
|
459 if (completion_ignore_case)
|
|
|
460 {
|
|
|
461 /* If this is an exact match except for case,
|
|
|
462 use it as the best match rather than one that is not
|
|
|
463 an exact match. This way, we get the case pattern
|
|
|
464 of the actual match. */
|
|
|
465 if ((matchsize == cclen
|
|
|
466 && matchsize + !!directoryp
|
|
|
467 < XSTRING_CHAR_LENGTH (bestmatch))
|
|
|
468 ||
|
|
|
469 /* If there is no exact match ignoring case,
|
|
|
470 prefer a match that does not change the case
|
|
|
471 of the input. */
|
|
|
472 (((matchsize == cclen)
|
|
|
473 ==
|
|
|
474 (matchsize + !!directoryp
|
|
|
475 == XSTRING_CHAR_LENGTH (bestmatch)))
|
|
|
476 /* If there is more than one exact match aside from
|
|
|
477 case, and one of them is exact including case,
|
|
|
478 prefer that one. */
|
|
|
479 && 0 > scmp_1 (p2, XSTRING_DATA (file),
|
|
|
480 file_name_length, 0)
|
|
|
481 && 0 <= scmp_1 (p1, XSTRING_DATA (file),
|
|
|
482 file_name_length, 0)))
|
|
|
483 {
|
|
|
484 bestmatch = make_string (d_name, len);
|
|
|
485 if (directoryp)
|
|
|
486 bestmatch = Ffile_name_as_directory (bestmatch);
|
|
|
487 }
|
|
|
488 }
|
|
|
489
|
|
|
490 /* If this directory all matches,
|
|
|
491 see if implicit following slash does too. */
|
|
|
492 if (directoryp
|
|
|
493 && compare == matchsize
|
|
|
494 && bestmatchsize > matchsize
|
|
|
495 && IS_ANY_SEP (charptr_emchar_n (p1, matchsize)))
|
|
|
496 matchsize++;
|
|
|
497 bestmatchsize = matchsize;
|
|
|
498 }
|
|
|
499 }
|
|
|
500 closedir (d);
|
|
|
501 free_opaque_ptr (XCAR (locative));
|
|
|
502 XCAR (locative) = Qnil;
|
|
|
503 }
|
|
|
504
|
|
|
505 unbind_to (speccount, Qnil);
|
|
|
506
|
|
|
507 UNGCPRO;
|
|
|
508
|
|
|
509 if (all_flag || NILP (bestmatch))
|
|
|
510 return bestmatch;
|
|
|
511 if (matchcount == 1 && bestmatchsize == file_name_length)
|
|
|
512 return Qt;
|
|
|
513 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
514 }
|
|
|
515
|
|
|
516
|
|
|
517 static Lisp_Object user_name_completion (Lisp_Object user,
|
|
|
518 int all_flag,
|
|
|
519 int *uniq);
|
|
|
520
|
|
|
521 DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /*
|
|
444
|
522 Complete user name from PARTIAL-USERNAME.
|
|
|
523 Return the longest prefix common to all user names starting with
|
|
|
524 PARTIAL-USERNAME. If there is only one and PARTIAL-USERNAME matches
|
|
|
525 it exactly, returns t. Return nil if there is no user name starting
|
|
|
526 with PARTIAL-USERNAME.
|
|
428
|
527 */
|
|
444
|
528 (partial_username))
|
|
428
|
529 {
|
|
444
|
530 return user_name_completion (partial_username, 0, NULL);
|
|
428
|
531 }
|
|
|
532
|
|
|
533 DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /*
|
|
444
|
534 Complete user name from PARTIAL-USERNAME.
|
|
428
|
535
|
|
|
536 This function is identical to `user-name-completion', except that
|
|
|
537 the cons of the completion and an indication of whether the
|
|
|
538 completion was unique is returned.
|
|
|
539
|
|
444
|
540 The car of the returned value is the longest prefix common to all user
|
|
|
541 names that start with PARTIAL-USERNAME. If there is only one and
|
|
|
542 PARTIAL-USERNAME matches it exactly, the car is t. The car is nil if
|
|
|
543 there is no user name starting with PARTIAL-USERNAME. The cdr of the
|
|
|
544 result is non-nil if and only if the completion returned in the car
|
|
|
545 was unique.
|
|
428
|
546 */
|
|
444
|
547 (partial_username))
|
|
428
|
548 {
|
|
|
549 int uniq;
|
|
444
|
550 Lisp_Object completed = user_name_completion (partial_username, 0, &uniq);
|
|
428
|
551 return Fcons (completed, uniq ? Qt : Qnil);
|
|
|
552 }
|
|
|
553
|
|
|
554 DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /*
|
|
444
|
555 Return a list of all user name completions from PARTIAL-USERNAME.
|
|
|
556 These are all the user names which begin with PARTIAL-USERNAME.
|
|
428
|
557 */
|
|
444
|
558 (partial_username))
|
|
428
|
559 {
|
|
444
|
560 return user_name_completion (partial_username, 1, NULL);
|
|
428
|
561 }
|
|
|
562
|
|
440
|
563 struct user_name
|
|
|
564 {
|
|
665
|
565 Intbyte *ptr;
|
|
647
|
566 Bytecount len;
|
|
440
|
567 };
|
|
|
568
|
|
|
569 struct user_cache
|
|
|
570 {
|
|
|
571 struct user_name *user_names;
|
|
428
|
572 int length;
|
|
|
573 int size;
|
|
|
574 EMACS_TIME last_rebuild_time;
|
|
|
575 };
|
|
|
576 static struct user_cache user_cache;
|
|
|
577
|
|
|
578 static void
|
|
|
579 free_user_cache (struct user_cache *cache)
|
|
|
580 {
|
|
|
581 int i;
|
|
|
582 for (i = 0; i < cache->length; i++)
|
|
440
|
583 xfree (cache->user_names[i].ptr);
|
|
|
584 xfree (cache->user_names);
|
|
|
585 xzero (*cache);
|
|
428
|
586 }
|
|
|
587
|
|
|
588 static Lisp_Object
|
|
440
|
589 user_name_completion_unwind (Lisp_Object cache_incomplete_p)
|
|
428
|
590 {
|
|
528
|
591 #ifndef WIN32_NATIVE
|
|
440
|
592 endpwent ();
|
|
|
593 speed_up_interrupts ();
|
|
528
|
594 #endif
|
|
428
|
595
|
|
440
|
596 if (! NILP (XCAR (cache_incomplete_p)))
|
|
|
597 free_user_cache (&user_cache);
|
|
|
598
|
|
|
599 free_cons (XCONS (cache_incomplete_p));
|
|
428
|
600
|
|
|
601 return Qnil;
|
|
|
602 }
|
|
|
603
|
|
440
|
604 #define USER_CACHE_TTL (24*60*60) /* Time to live: 1 day, in seconds */
|
|
428
|
605
|
|
|
606 static Lisp_Object
|
|
|
607 user_name_completion (Lisp_Object user, int all_flag, int *uniq)
|
|
|
608 {
|
|
|
609 /* This function can GC */
|
|
|
610 int matchcount = 0;
|
|
|
611 Lisp_Object bestmatch = Qnil;
|
|
|
612 Charcount bestmatchsize = 0;
|
|
|
613 Charcount user_name_length;
|
|
|
614 EMACS_TIME t;
|
|
|
615 int i;
|
|
|
616 struct gcpro gcpro1, gcpro2;
|
|
|
617
|
|
|
618 GCPRO2 (user, bestmatch);
|
|
|
619
|
|
|
620 CHECK_STRING (user);
|
|
|
621
|
|
|
622 user_name_length = XSTRING_CHAR_LENGTH (user);
|
|
|
623
|
|
|
624 /* Cache user name lookups because it tends to be quite slow.
|
|
|
625 * Rebuild the cache occasionally to catch changes */
|
|
|
626 EMACS_GET_TIME (t);
|
|
440
|
627 if (user_cache.user_names &&
|
|
428
|
628 (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time)
|
|
440
|
629 > USER_CACHE_TTL))
|
|
|
630 free_user_cache (&user_cache);
|
|
428
|
631
|
|
440
|
632 if (!user_cache.user_names)
|
|
428
|
633 {
|
|
528
|
634 #ifndef WIN32_NATIVE
|
|
428
|
635 struct passwd *pwd;
|
|
528
|
636 #else
|
|
|
637 DWORD entriesread;
|
|
|
638 DWORD totalentries;
|
|
|
639 DWORD resume_handle = 0;
|
|
|
640 #endif
|
|
|
641
|
|
440
|
642 Lisp_Object cache_incomplete_p = noseeum_cons (Qt, Qnil);
|
|
|
643 int speccount = specpdl_depth ();
|
|
|
644
|
|
528
|
645 record_unwind_protect (user_name_completion_unwind, cache_incomplete_p);
|
|
|
646 #ifndef WIN32_NATIVE
|
|
428
|
647 slow_down_interrupts ();
|
|
|
648 setpwent ();
|
|
|
649 while ((pwd = getpwent ()))
|
|
|
650 {
|
|
|
651 QUIT;
|
|
440
|
652 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
653 user_cache.length + 1, struct user_name);
|
|
|
654 TO_INTERNAL_FORMAT (C_STRING, pwd->pw_name,
|
|
|
655 MALLOC,
|
|
|
656 (user_cache.user_names[user_cache.length].ptr,
|
|
|
657 user_cache.user_names[user_cache.length].len),
|
|
|
658 Qnative);
|
|
|
659 user_cache.length++;
|
|
428
|
660 }
|
|
528
|
661 #else
|
|
531
|
662 if (xNetUserEnum)
|
|
528
|
663 {
|
|
531
|
664 do
|
|
528
|
665 {
|
|
531
|
666 USER_INFO_0 *bufptr;
|
|
|
667 NET_API_STATUS status_status_statui_statum_statu;
|
|
|
668 int i;
|
|
|
669
|
|
|
670 QUIT;
|
|
|
671 status_status_statui_statum_statu =
|
|
|
672 xNetUserEnum (NULL, 0, 0, (LPBYTE *) &bufptr, 1024,
|
|
|
673 &entriesread, &totalentries, &resume_handle);
|
|
|
674 if (status_status_statui_statum_statu != NERR_Success &&
|
|
|
675 status_status_statui_statum_statu != ERROR_MORE_DATA)
|
|
|
676 invalid_operation ("Error enumerating users",
|
|
|
677 make_int (GetLastError ()));
|
|
647
|
678 for (i = 0; i < (int) entriesread; i++)
|
|
531
|
679 {
|
|
|
680 int nout =
|
|
|
681 WideCharToMultiByte (CP_ACP, WC_COMPOSITECHECK,
|
|
|
682 bufptr[i].usri0_name,
|
|
|
683 -1, 0, 0, "~", 0);
|
|
|
684 void *outp = alloca (nout);
|
|
|
685 WideCharToMultiByte (CP_ACP, WC_COMPOSITECHECK,
|
|
|
686 bufptr[i].usri0_name, -1,
|
|
|
687 (LPSTR) outp, nout, "~", 0);
|
|
|
688 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
689 user_cache.length + 1, struct user_name);
|
|
|
690 TO_INTERNAL_FORMAT (C_STRING, outp,
|
|
|
691 MALLOC,
|
|
|
692 (user_cache.
|
|
|
693 user_names[user_cache.length].ptr,
|
|
|
694 user_cache.
|
|
|
695 user_names[user_cache.length].len),
|
|
|
696 Qmswindows_tstr);
|
|
|
697 user_cache.length++;
|
|
|
698 }
|
|
|
699 xNetApiBufferFree (bufptr);
|
|
528
|
700 }
|
|
531
|
701 while (entriesread != totalentries);
|
|
528
|
702 }
|
|
546
|
703 else /* Win 9x */
|
|
|
704 {
|
|
|
705 Extbyte name[2 * (UNLEN + 1)];
|
|
|
706 DWORD length = sizeof (name);
|
|
|
707
|
|
|
708 if (GetUserName (name, &length))
|
|
|
709 {
|
|
|
710 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
711 user_cache.length + 1, struct user_name);
|
|
|
712 TO_INTERNAL_FORMAT (C_STRING, name,
|
|
|
713 MALLOC,
|
|
|
714 (user_cache.
|
|
|
715 user_names[user_cache.length].ptr,
|
|
|
716 user_cache.
|
|
|
717 user_names[user_cache.length].len),
|
|
|
718 Qmswindows_tstr);
|
|
|
719 user_cache.length++;
|
|
|
720 }
|
|
|
721 }
|
|
528
|
722 #endif
|
|
|
723
|
|
440
|
724 XCAR (cache_incomplete_p) = Qnil;
|
|
|
725 unbind_to (speccount, Qnil);
|
|
|
726
|
|
428
|
727 EMACS_GET_TIME (user_cache.last_rebuild_time);
|
|
|
728 }
|
|
|
729
|
|
|
730 for (i = 0; i < user_cache.length; i++)
|
|
|
731 {
|
|
665
|
732 Intbyte *u_name = user_cache.user_names[i].ptr;
|
|
440
|
733 Bytecount len = user_cache.user_names[i].len;
|
|
428
|
734 /* scmp() works in chars, not bytes, so we have to compute this: */
|
|
|
735 Charcount cclen = bytecount_to_charcount (u_name, len);
|
|
|
736
|
|
|
737 QUIT;
|
|
|
738
|
|
|
739 if (cclen < user_name_length
|
|
|
740 || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0))
|
|
|
741 continue;
|
|
|
742
|
|
|
743 matchcount++; /* count matching completions */
|
|
|
744
|
|
|
745 if (all_flag || NILP (bestmatch))
|
|
|
746 {
|
|
|
747 Lisp_Object name = Qnil;
|
|
|
748 struct gcpro ngcpro1;
|
|
|
749 NGCPRO1 (name);
|
|
|
750 /* This is a possible completion */
|
|
|
751 name = make_string (u_name, len);
|
|
|
752 if (all_flag)
|
|
|
753 {
|
|
|
754 bestmatch = Fcons (name, bestmatch);
|
|
|
755 }
|
|
|
756 else
|
|
|
757 {
|
|
|
758 bestmatch = name;
|
|
|
759 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
760 }
|
|
|
761 NUNGCPRO;
|
|
|
762 }
|
|
|
763 else
|
|
|
764 {
|
|
|
765 Charcount compare = min (bestmatchsize, cclen);
|
|
665
|
766 Intbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
767 Intbyte *p2 = u_name;
|
|
428
|
768 Charcount matchsize = scmp_1 (p1, p2, compare, 0);
|
|
|
769
|
|
|
770 if (matchsize < 0)
|
|
|
771 matchsize = compare;
|
|
|
772
|
|
|
773 bestmatchsize = matchsize;
|
|
|
774 }
|
|
|
775 }
|
|
|
776
|
|
|
777 UNGCPRO;
|
|
|
778
|
|
|
779 if (uniq)
|
|
|
780 *uniq = (matchcount == 1);
|
|
|
781
|
|
|
782 if (all_flag || NILP (bestmatch))
|
|
|
783 return bestmatch;
|
|
|
784 if (matchcount == 1 && bestmatchsize == user_name_length)
|
|
|
785 return Qt;
|
|
|
786 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
787 }
|
|
|
788
|
|
|
789
|
|
|
790 Lisp_Object
|
|
442
|
791 make_directory_hash_table (const char *path)
|
|
428
|
792 {
|
|
|
793 DIR *d;
|
|
|
794 if ((d = opendir (path)))
|
|
|
795 {
|
|
|
796 DIRENTRY *dp;
|
|
|
797 Lisp_Object hash =
|
|
|
798 make_lisp_hash_table (20, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
799
|
|
|
800 while ((dp = readdir (d)))
|
|
|
801 {
|
|
|
802 Bytecount len = NAMLEN (dp);
|
|
|
803 if (DIRENTRY_NONEMPTY (dp))
|
|
665
|
804 /* Cast to Intbyte* is OK, as readdir() Mule-encapsulates. */
|
|
|
805 Fputhash (make_string ((Intbyte *) dp->d_name, len), Qt, hash);
|
|
428
|
806 }
|
|
|
807 closedir (d);
|
|
|
808 return hash;
|
|
|
809 }
|
|
|
810 else
|
|
|
811 return Qnil;
|
|
|
812 }
|
|
|
813
|
|
707
|
814 #if 0
|
|
|
815 /* ... never used ... should use list2 directly anyway ... */
|
|
|
816 /* NOTE: This function can never return a negative value. */
|
|
428
|
817 Lisp_Object
|
|
|
818 wasteful_word_to_lisp (unsigned int item)
|
|
|
819 {
|
|
|
820 /* Compatibility: in other versions, file-attributes returns a LIST
|
|
|
821 of two 16 bit integers... */
|
|
|
822 Lisp_Object cons = word_to_lisp (item);
|
|
|
823 XCDR (cons) = Fcons (XCDR (cons), Qnil);
|
|
|
824 return cons;
|
|
|
825 }
|
|
707
|
826 #endif
|
|
428
|
827
|
|
|
828 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 0, /*
|
|
|
829 Return a list of attributes of file FILENAME.
|
|
|
830 Value is nil if specified file cannot be opened.
|
|
|
831 Otherwise, list elements are:
|
|
|
832 0. t for directory, string (name linked to) for symbolic link, or nil.
|
|
|
833 1. Number of links to file.
|
|
|
834 2. File uid.
|
|
|
835 3. File gid.
|
|
|
836 4. Last access time, as a list of two integers.
|
|
|
837 First integer has high-order 16 bits of time, second has low 16 bits.
|
|
|
838 5. Last modification time, likewise.
|
|
|
839 6. Last status change time, likewise.
|
|
|
840 7. Size in bytes. (-1, if number is out of range).
|
|
|
841 8. File modes, as a string of ten letters or dashes as in ls -l.
|
|
|
842 9. t iff file's gid would change if file were deleted and recreated.
|
|
|
843 10. inode number.
|
|
|
844 11. Device number.
|
|
|
845
|
|
|
846 If file does not exist, returns nil.
|
|
|
847 */
|
|
|
848 (filename))
|
|
|
849 {
|
|
|
850 /* This function can GC. GC checked 1997.06.04. */
|
|
|
851 Lisp_Object values[12];
|
|
|
852 Lisp_Object directory = Qnil;
|
|
|
853 struct stat s;
|
|
|
854 char modes[10];
|
|
|
855 Lisp_Object handler;
|
|
|
856 struct gcpro gcpro1, gcpro2;
|
|
|
857
|
|
|
858 GCPRO2 (filename, directory);
|
|
|
859 filename = Fexpand_file_name (filename, Qnil);
|
|
|
860
|
|
|
861 /* If the file name has special constructs in it,
|
|
|
862 call the corresponding file handler. */
|
|
|
863 handler = Ffind_file_name_handler (filename, Qfile_attributes);
|
|
|
864 if (!NILP (handler))
|
|
|
865 {
|
|
|
866 UNGCPRO;
|
|
|
867 return call2 (handler, Qfile_attributes, filename);
|
|
|
868 }
|
|
|
869
|
|
|
870 if (lstat ((char *) XSTRING_DATA (filename), &s) < 0)
|
|
|
871 {
|
|
|
872 UNGCPRO;
|
|
|
873 return Qnil;
|
|
|
874 }
|
|
|
875
|
|
|
876 #ifdef BSD4_2
|
|
|
877 directory = Ffile_name_directory (filename);
|
|
|
878 #endif
|
|
|
879
|
|
442
|
880 #if 0 /* #### shouldn't this apply to WIN32_NATIVE and maybe CYGWIN? */
|
|
428
|
881 {
|
|
|
882 char *tmpnam = (char *) XSTRING_DATA (Ffile_name_nondirectory (filename));
|
|
|
883 int l = strlen (tmpnam);
|
|
|
884
|
|
|
885 if (l >= 5
|
|
|
886 && S_ISREG (s.st_mode)
|
|
|
887 && (stricmp (&tmpnam[l - 4], ".com") == 0 ||
|
|
|
888 stricmp (&tmpnam[l - 4], ".exe") == 0 ||
|
|
|
889 stricmp (&tmpnam[l - 4], ".bat") == 0))
|
|
|
890 {
|
|
|
891 s.st_mode |= S_IEXEC;
|
|
|
892 }
|
|
|
893 }
|
|
442
|
894 #endif
|
|
428
|
895
|
|
|
896 switch (s.st_mode & S_IFMT)
|
|
|
897 {
|
|
|
898 default:
|
|
|
899 values[0] = Qnil;
|
|
|
900 break;
|
|
|
901 case S_IFDIR:
|
|
|
902 values[0] = Qt;
|
|
|
903 break;
|
|
|
904 #ifdef S_IFLNK
|
|
|
905 case S_IFLNK:
|
|
|
906 values[0] = Ffile_symlink_p (filename);
|
|
|
907 break;
|
|
|
908 #endif
|
|
|
909 }
|
|
|
910 values[1] = make_int (s.st_nlink);
|
|
|
911 values[2] = make_int (s.st_uid);
|
|
|
912 values[3] = make_int (s.st_gid);
|
|
707
|
913 values[4] = make_time (s.st_atime);
|
|
|
914 values[5] = make_time (s.st_mtime);
|
|
|
915 values[6] = make_time (s.st_ctime);
|
|
428
|
916 values[7] = make_int ((EMACS_INT) s.st_size);
|
|
|
917 /* If the size is out of range, give back -1. */
|
|
|
918 /* #### Fix when Emacs gets bignums! */
|
|
|
919 if (XINT (values[7]) != s.st_size)
|
|
|
920 values[7] = make_int (-1);
|
|
|
921 filemodestring (&s, modes);
|
|
665
|
922 values[8] = make_string ((Intbyte *) modes, 10);
|
|
428
|
923 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
|
|
|
924 {
|
|
|
925 struct stat sdir;
|
|
|
926
|
|
442
|
927 if (!NILP (directory) && xemacs_stat ((char *) XSTRING_DATA (directory), &sdir) == 0)
|
|
428
|
928 values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
|
|
|
929 else /* if we can't tell, assume worst */
|
|
|
930 values[9] = Qt;
|
|
|
931 }
|
|
|
932 #else /* file gid will be egid */
|
|
|
933 values[9] = (s.st_gid != getegid ()) ? Qt : Qnil;
|
|
|
934 #endif /* BSD4_2 or BSD4_3 */
|
|
|
935 values[10] = make_int (s.st_ino);
|
|
|
936 values[11] = make_int (s.st_dev);
|
|
|
937 UNGCPRO;
|
|
|
938 return Flist (countof (values), values);
|
|
|
939 }
|
|
|
940
|
|
|
941
|
|
|
942 /************************************************************************/
|
|
|
943 /* initialization */
|
|
|
944 /************************************************************************/
|
|
|
945
|
|
|
946 void
|
|
|
947 syms_of_dired (void)
|
|
|
948 {
|
|
563
|
949 DEFSYMBOL (Qdirectory_files);
|
|
|
950 DEFSYMBOL (Qfile_name_completion);
|
|
|
951 DEFSYMBOL (Qfile_name_all_completions);
|
|
|
952 DEFSYMBOL (Qfile_attributes);
|
|
428
|
953
|
|
|
954 DEFSUBR (Fdirectory_files);
|
|
|
955 DEFSUBR (Ffile_name_completion);
|
|
|
956 DEFSUBR (Ffile_name_all_completions);
|
|
|
957 DEFSUBR (Fuser_name_completion);
|
|
|
958 DEFSUBR (Fuser_name_completion_1);
|
|
|
959 DEFSUBR (Fuser_name_all_completions);
|
|
|
960 DEFSUBR (Ffile_attributes);
|
|
|
961 }
|
|
|
962
|
|
|
963 void
|
|
|
964 vars_of_dired (void)
|
|
|
965 {
|
|
|
966 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /*
|
|
|
967 *Completion ignores filenames ending in any string in this list.
|
|
|
968 This variable does not affect lists of possible completions,
|
|
|
969 but does affect the commands that actually do completions.
|
|
|
970 It is used by the functions `file-name-completion' and
|
|
|
971 `file-name-all-completions'.
|
|
|
972 */ );
|
|
|
973 Vcompletion_ignored_extensions = Qnil;
|
|
|
974 }
|
