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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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38 Lisp_Object Vcompletion_ignored_extensions;
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39 Lisp_Object Qdirectory_files;
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40 Lisp_Object Qfile_name_completion;
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41 Lisp_Object Qfile_name_all_completions;
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42 Lisp_Object Qfile_attributes;
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43
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44 static Lisp_Object
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45 close_directory_unwind (Lisp_Object unwind_obj)
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46 {
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47 DIR *d = (DIR *)get_opaque_ptr (unwind_obj);
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48 closedir (d);
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49 free_opaque_ptr (unwind_obj);
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50 return Qnil;
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51 }
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52
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53 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /*
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54 Return a list of names of files in DIRECTORY.
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55 There are four optional arguments:
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56 If FULL is non-nil, absolute pathnames of the files are returned.
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57 If MATCH is non-nil, only pathnames containing that regexp are returned.
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58 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
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59 NOSORT is useful if you plan to sort the result yourself.
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60 If FILES-ONLY is the symbol t, then only the "files" in the directory
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61 will be returned; subdirectories will be excluded. If FILES-ONLY is not
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62 nil and not t, then only the subdirectories will be returned. Otherwise,
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63 if FILES-ONLY is nil (the default) then both files and subdirectories will
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64 be returned.
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65 */
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66 (directory, full, match, nosort, files_only))
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67 {
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68 /* This function can GC */
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69 DIR *d;
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70 Lisp_Object list = Qnil;
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71 Bytecount directorylen;
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72 Lisp_Object handler;
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73 struct re_pattern_buffer *bufp = NULL;
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74 int speccount = specpdl_depth ();
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75 char *statbuf, *statbuf_tail;
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76
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77 struct gcpro gcpro1, gcpro2;
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78 GCPRO2 (directory, list);
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79
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80 /* If the file name has special constructs in it,
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81 call the corresponding file handler. */
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82 handler = Ffind_file_name_handler (directory, Qdirectory_files);
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83 if (!NILP (handler))
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84 {
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85 UNGCPRO;
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86 if (!NILP (files_only))
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87 return call6 (handler, Qdirectory_files, directory, full, match,
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88 nosort, files_only);
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89 else
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90 return call5 (handler, Qdirectory_files, directory, full, match,
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91 nosort);
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92 }
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93
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94 /* #### why do we do Fexpand_file_name after file handlers here,
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95 but earlier everywhere else? */
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96 directory = Fexpand_file_name (directory, Qnil);
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97 directory = Ffile_name_as_directory (directory);
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98 directorylen = XSTRING_LENGTH (directory);
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99
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100 statbuf = (char *)alloca (directorylen + MAXNAMLEN + 1);
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101 memcpy (statbuf, XSTRING_DATA (directory), directorylen);
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102 statbuf_tail = statbuf + directorylen;
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103
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104 /* XEmacs: this should come after Ffile_name_as_directory() to avoid
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105 potential regexp cache smashage. It comes before the opendir()
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106 because it might signal an error. */
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107 if (!NILP (match))
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108 {
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109 CHECK_STRING (match);
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110
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111 /* MATCH might be a flawed regular expression. Rather than
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112 catching and signalling our own errors, we just call
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113 compile_pattern to do the work for us. */
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446
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114 bufp = compile_pattern (match, 0, Qnil, 0, ERROR_ME);
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428
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115 }
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116
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117 /* Now *bufp is the compiled form of MATCH; don't call anything
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118 which might compile a new regexp until we're done with the loop! */
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119
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120 /* Do this opendir after anything which might signal an error.
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121 NOTE: the above comment is old; previously, there was no
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122 unwind-protection in case of error, but now there is. */
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123 d = opendir ((char *) XSTRING_DATA (directory));
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124 if (!d)
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125 report_file_error ("Opening directory", list1 (directory));
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126
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460
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127 regex_match_object = Qt;
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128 regex_emacs_buffer = current_buffer;
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129
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428
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130 record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d));
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131
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132 /* Loop reading blocks */
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133 while (1)
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134 {
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135 DIRENTRY *dp = readdir (d);
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136 int len;
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137
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138 if (!dp)
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139 break;
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140 len = NAMLEN (dp);
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141 if (DIRENTRY_NONEMPTY (dp)
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142 && (NILP (match)
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143 || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))))
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144 {
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145 if (!NILP (files_only))
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146 {
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147 struct stat st;
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148 int dir_p = 0;
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149
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150 memcpy (statbuf_tail, dp->d_name, len);
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151 statbuf_tail[len] = 0;
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152
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442
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153 if (xemacs_stat (statbuf, &st) == 0
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428
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154 && (st.st_mode & S_IFMT) == S_IFDIR)
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155 dir_p = 1;
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156
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157 if (EQ (files_only, Qt) && dir_p)
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158 continue;
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159 else if (!EQ (files_only, Qt) && !dir_p)
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160 continue;
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161 }
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162
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163 {
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164 Lisp_Object name =
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165 make_string ((Bufbyte *)dp->d_name, len);
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166 if (!NILP (full))
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167 name = concat2 (directory, name);
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168
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169 list = Fcons (name, list);
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170 }
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171 }
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172 }
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173 unbind_to (speccount, Qnil); /* This will close the dir */
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174
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175 if (NILP (nosort))
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176 list = Fsort (Fnreverse (list), Qstring_lessp);
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177
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178 RETURN_UNGCPRO (list);
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179 }
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180
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181 static Lisp_Object file_name_completion (Lisp_Object file,
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182 Lisp_Object directory,
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183 int all_flag, int ver_flag);
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184
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185 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
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444
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186 Complete file name PARTIAL-FILENAME in directory DIRECTORY.
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187 Return the longest prefix common to all file names in DIRECTORY
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188 that start with PARTIAL-FILENAME.
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189 If there is only one and PARTIAL-FILENAME matches it exactly, return t.
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190 Return nil if DIRECTORY contains no name starting with PARTIAL-FILENAME.
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428
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191
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444
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192 File names which end with any member of `completion-ignored-extensions'
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193 are not considered as possible completions for PARTIAL-FILENAME unless
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194 there is no other possible completion. `completion-ignored-extensions'
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195 is not applied to the names of directories.
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428
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196 */
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444
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197 (partial_filename, directory))
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428
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198 {
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199 /* This function can GC. GC checked 1996.04.06. */
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200 Lisp_Object handler;
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201
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202 /* If the directory name has special constructs in it,
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203 call the corresponding file handler. */
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204 handler = Ffind_file_name_handler (directory, Qfile_name_completion);
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205 if (!NILP (handler))
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444
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206 return call3 (handler, Qfile_name_completion, partial_filename, directory);
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428
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207
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208 /* If the file name has special constructs in it,
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209 call the corresponding file handler. */
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444
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210 handler = Ffind_file_name_handler (partial_filename, Qfile_name_completion);
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428
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211 if (!NILP (handler))
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444
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212 return call3 (handler, Qfile_name_completion, partial_filename, directory);
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428
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213
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444
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214 return file_name_completion (partial_filename, directory, 0, 0);
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428
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215 }
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216
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217 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
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444
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218 Return a list of all completions of PARTIAL-FILENAME in DIRECTORY.
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219 These are all file names in DIRECTORY which begin with PARTIAL-FILENAME.
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428
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220
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221 File names which end with any member of `completion-ignored-extensions'
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444
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222 are not considered as possible completions for PARTIAL-FILENAME unless
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223 there is no other possible completion. `completion-ignored-extensions'
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224 is not applied to the names of directories.
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428
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225 */
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444
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226 (partial_filename, directory))
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428
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227 {
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228 /* This function can GC. GC checked 1997.06.04. */
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229 Lisp_Object handler;
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230 struct gcpro gcpro1;
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231
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232 GCPRO1 (directory);
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233 directory = Fexpand_file_name (directory, Qnil);
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234 /* If the file name has special constructs in it,
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235 call the corresponding file handler. */
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236 handler = Ffind_file_name_handler (directory, Qfile_name_all_completions);
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237 UNGCPRO;
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238 if (!NILP (handler))
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444
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239 return call3 (handler, Qfile_name_all_completions, partial_filename,
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428
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240 directory);
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241
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444
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242 return file_name_completion (partial_filename, directory, 1, 0);
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428
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243 }
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244
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245 static int
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246 file_name_completion_stat (Lisp_Object directory, DIRENTRY *dp,
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247 struct stat *st_addr)
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248 {
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249 Bytecount len = NAMLEN (dp);
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250 Bytecount pos = XSTRING_LENGTH (directory);
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251 int value;
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252 char *fullname = (char *) alloca (len + pos + 2);
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253
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254 memcpy (fullname, XSTRING_DATA (directory), pos);
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255 if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
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256 fullname[pos++] = DIRECTORY_SEP;
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257
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258 memcpy (fullname + pos, dp->d_name, len);
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259 fullname[pos + len] = 0;
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260
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261 #ifdef S_IFLNK
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262 /* We want to return success if a link points to a nonexistent file,
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263 but we want to return the status for what the link points to,
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264 in case it is a directory. */
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265 value = lstat (fullname, st_addr);
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266 if (S_ISLNK (st_addr->st_mode))
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442
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267 xemacs_stat (fullname, st_addr);
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428
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268 #else
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442
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269 value = xemacs_stat (fullname, st_addr);
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428
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270 #endif
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271 return value;
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272 }
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273
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274 static Lisp_Object
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275 file_name_completion_unwind (Lisp_Object locative)
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276 {
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277 DIR *d;
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278 Lisp_Object obj = XCAR (locative);
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279
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280 if (!NILP (obj))
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281 {
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282 d = (DIR *)get_opaque_ptr (obj);
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283 closedir (d);
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284 free_opaque_ptr (obj);
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285 }
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286 free_cons (XCONS (locative));
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287 return Qnil;
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|
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288 }
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289
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290 static Lisp_Object
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291 file_name_completion (Lisp_Object file, Lisp_Object directory, int all_flag,
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292 int ver_flag)
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293 {
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294 /* This function can GC */
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295 DIR *d = 0;
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296 int matchcount = 0;
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297 Lisp_Object bestmatch = Qnil;
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298 Charcount bestmatchsize = 0;
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299 struct stat st;
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300 int passcount;
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301 int speccount = specpdl_depth ();
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302 Charcount file_name_length;
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303 Lisp_Object locative;
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304 struct gcpro gcpro1, gcpro2, gcpro3;
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305
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306 GCPRO3 (file, directory, bestmatch);
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307
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|
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308 CHECK_STRING (file);
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309
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442
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310 #ifdef WIN32_NATIVE
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428
|
311 /* Filename completion on Windows ignores case, since Windows
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312 filesystems do. */
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|
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313 specbind (Qcompletion_ignore_case, Qt);
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442
|
314 #endif /* WIN32_NATIVE */
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428
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315
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|
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316 #ifdef FILE_SYSTEM_CASE
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|
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317 file = FILE_SYSTEM_CASE (file);
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|
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318 #endif
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319 directory = Fexpand_file_name (directory, Qnil);
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320 file_name_length = XSTRING_CHAR_LENGTH (file);
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321
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322 /* With passcount = 0, ignore files that end in an ignored extension.
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323 If nothing found then try again with passcount = 1, don't ignore them.
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324 If looking for all completions, start with passcount = 1,
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325 so always take even the ignored ones.
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326
|
|
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327 ** It would not actually be helpful to the user to ignore any possible
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|
|
328 completions when making a list of them.** */
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|
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329
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|
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330 /* We cannot use close_directory_unwind() because we change the
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|
|
331 directory. The old code used to just avoid signaling errors, and
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332 call closedir, but it was wrong, because it made sane handling of
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|
|
333 QUIT impossible and, besides, various utility functions like
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|
|
334 regexp_ignore_completion_p can signal errors. */
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|
|
335 locative = noseeum_cons (Qnil, Qnil);
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|
|
336 record_unwind_protect (file_name_completion_unwind, locative);
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|
|
337
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|
|
338 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
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|
|
339 {
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|
|
340 d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (directory)));
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|
|
341 if (!d)
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|
|
342 report_file_error ("Opening directory", list1 (directory));
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|
|
343 XCAR (locative) = make_opaque_ptr ((void *)d);
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|
|
344
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|
|
345 /* Loop reading blocks */
|
|
|
346 while (1)
|
|
|
347 {
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|
|
348 DIRENTRY *dp;
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|
|
349 Bytecount len;
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|
|
350 /* scmp() works in characters, not bytes, so we have to compute
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|
|
351 this value: */
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|
|
352 Charcount cclen;
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|
|
353 int directoryp;
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|
|
354 int ignored_extension_p = 0;
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|
|
355 Bufbyte *d_name;
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|
|
356
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|
|
357 dp = readdir (d);
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|
|
358 if (!dp) break;
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|
|
359
|
|
|
360 /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
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|
|
361 d_name = (Bufbyte *) dp->d_name;
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|
|
362 len = NAMLEN (dp);
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|
|
363 cclen = bytecount_to_charcount (d_name, len);
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|
|
364
|
|
|
365 QUIT;
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|
|
366
|
|
|
367 if (! DIRENTRY_NONEMPTY (dp)
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|
|
368 || cclen < file_name_length
|
|
|
369 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
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|
|
370 continue;
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|
|
371
|
|
|
372 if (file_name_completion_stat (directory, dp, &st) < 0)
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|
|
373 continue;
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|
|
374
|
|
|
375 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
376 if (directoryp)
|
|
|
377 {
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|
|
378 #ifndef TRIVIAL_DIRECTORY_ENTRY
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|
|
379 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
|
|
|
380 #endif
|
|
|
381 /* "." and ".." are never interesting as completions, but are
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|
|
382 actually in the way in a directory containing only one file. */
|
|
|
383 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
|
|
|
384 continue;
|
|
|
385 }
|
|
|
386 else
|
|
|
387 {
|
|
|
388 /* Compare extensions-to-be-ignored against end of this file name */
|
|
|
389 /* if name is not an exact match against specified string. */
|
|
|
390 if (!passcount && cclen > file_name_length)
|
|
|
391 {
|
|
|
392 Lisp_Object tem;
|
|
|
393 /* and exit this for loop if a match is found */
|
|
|
394 EXTERNAL_LIST_LOOP (tem, Vcompletion_ignored_extensions)
|
|
|
395 {
|
|
|
396 Lisp_Object elt = XCAR (tem);
|
|
|
397 Charcount skip;
|
|
|
398
|
|
|
399 CHECK_STRING (elt);
|
|
|
400
|
|
|
401 skip = cclen - XSTRING_CHAR_LENGTH (elt);
|
|
|
402 if (skip < 0) continue;
|
|
|
403
|
|
|
404 if (0 > scmp (charptr_n_addr (d_name, skip),
|
|
|
405 XSTRING_DATA (elt),
|
|
|
406 XSTRING_CHAR_LENGTH (elt)))
|
|
|
407 {
|
|
|
408 ignored_extension_p = 1;
|
|
|
409 break;
|
|
|
410 }
|
|
|
411 }
|
|
|
412 }
|
|
|
413 }
|
|
|
414
|
|
|
415 /* If an ignored-extensions match was found,
|
|
|
416 don't process this name as a completion. */
|
|
|
417 if (!passcount && ignored_extension_p)
|
|
|
418 continue;
|
|
|
419
|
|
|
420 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, cclen))
|
|
|
421 continue;
|
|
|
422
|
|
|
423 /* Update computation of how much all possible completions match */
|
|
|
424 matchcount++;
|
|
|
425
|
|
|
426 if (all_flag || NILP (bestmatch))
|
|
|
427 {
|
|
|
428 Lisp_Object name = Qnil;
|
|
|
429 struct gcpro ngcpro1;
|
|
|
430 NGCPRO1 (name);
|
|
|
431 /* This is a possible completion */
|
|
|
432 name = make_string (d_name, len);
|
|
|
433 if (directoryp) /* Completion is a directory; end it with '/' */
|
|
|
434 name = Ffile_name_as_directory (name);
|
|
|
435 if (all_flag)
|
|
|
436 {
|
|
|
437 bestmatch = Fcons (name, bestmatch);
|
|
|
438 }
|
|
|
439 else
|
|
|
440 {
|
|
|
441 bestmatch = name;
|
|
|
442 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
443 }
|
|
|
444 NUNGCPRO;
|
|
|
445 }
|
|
|
446 else
|
|
|
447 {
|
|
|
448 Charcount compare = min (bestmatchsize, cclen);
|
|
|
449 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
450 Bufbyte *p2 = d_name;
|
|
|
451 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
452
|
|
|
453 if (matchsize < 0)
|
|
|
454 matchsize = compare;
|
|
|
455 if (completion_ignore_case)
|
|
|
456 {
|
|
|
457 /* If this is an exact match except for case,
|
|
|
458 use it as the best match rather than one that is not
|
|
|
459 an exact match. This way, we get the case pattern
|
|
|
460 of the actual match. */
|
|
|
461 if ((matchsize == cclen
|
|
|
462 && matchsize + !!directoryp
|
|
|
463 < XSTRING_CHAR_LENGTH (bestmatch))
|
|
|
464 ||
|
|
|
465 /* If there is no exact match ignoring case,
|
|
|
466 prefer a match that does not change the case
|
|
|
467 of the input. */
|
|
|
468 (((matchsize == cclen)
|
|
|
469 ==
|
|
|
470 (matchsize + !!directoryp
|
|
|
471 == XSTRING_CHAR_LENGTH (bestmatch)))
|
|
|
472 /* If there is more than one exact match aside from
|
|
|
473 case, and one of them is exact including case,
|
|
|
474 prefer that one. */
|
|
|
475 && 0 > scmp_1 (p2, XSTRING_DATA (file),
|
|
|
476 file_name_length, 0)
|
|
|
477 && 0 <= scmp_1 (p1, XSTRING_DATA (file),
|
|
|
478 file_name_length, 0)))
|
|
|
479 {
|
|
|
480 bestmatch = make_string (d_name, len);
|
|
|
481 if (directoryp)
|
|
|
482 bestmatch = Ffile_name_as_directory (bestmatch);
|
|
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486 /* If this directory all matches,
|
|
|
487 see if implicit following slash does too. */
|
|
|
488 if (directoryp
|
|
|
489 && compare == matchsize
|
|
|
490 && bestmatchsize > matchsize
|
|
|
491 && IS_ANY_SEP (charptr_emchar_n (p1, matchsize)))
|
|
|
492 matchsize++;
|
|
|
493 bestmatchsize = matchsize;
|
|
|
494 }
|
|
|
495 }
|
|
|
496 closedir (d);
|
|
|
497 free_opaque_ptr (XCAR (locative));
|
|
|
498 XCAR (locative) = Qnil;
|
|
|
499 }
|
|
|
500
|
|
|
501 unbind_to (speccount, Qnil);
|
|
|
502
|
|
|
503 UNGCPRO;
|
|
|
504
|
|
|
505 if (all_flag || NILP (bestmatch))
|
|
|
506 return bestmatch;
|
|
|
507 if (matchcount == 1 && bestmatchsize == file_name_length)
|
|
|
508 return Qt;
|
|
|
509 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
510 }
|
|
|
511
|
|
|
512
|
|
|
513
|
|
442
|
514 /* The *pwent() functions do not exist on NT. #### The NT equivalent
|
|
|
515 is NetUserEnum(), and rewriting to use it is not hard.*/
|
|
|
516 #ifndef WIN32_NATIVE
|
|
428
|
517
|
|
|
518 static Lisp_Object user_name_completion (Lisp_Object user,
|
|
|
519 int all_flag,
|
|
|
520 int *uniq);
|
|
|
521
|
|
|
522 DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /*
|
|
444
|
523 Complete user name from PARTIAL-USERNAME.
|
|
|
524 Return the longest prefix common to all user names starting with
|
|
|
525 PARTIAL-USERNAME. If there is only one and PARTIAL-USERNAME matches
|
|
|
526 it exactly, returns t. Return nil if there is no user name starting
|
|
|
527 with PARTIAL-USERNAME.
|
|
428
|
528 */
|
|
444
|
529 (partial_username))
|
|
428
|
530 {
|
|
444
|
531 return user_name_completion (partial_username, 0, NULL);
|
|
428
|
532 }
|
|
|
533
|
|
|
534 DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /*
|
|
444
|
535 Complete user name from PARTIAL-USERNAME.
|
|
428
|
536
|
|
|
537 This function is identical to `user-name-completion', except that
|
|
|
538 the cons of the completion and an indication of whether the
|
|
|
539 completion was unique is returned.
|
|
|
540
|
|
444
|
541 The car of the returned value is the longest prefix common to all user
|
|
|
542 names that start with PARTIAL-USERNAME. If there is only one and
|
|
|
543 PARTIAL-USERNAME matches it exactly, the car is t. The car is nil if
|
|
|
544 there is no user name starting with PARTIAL-USERNAME. The cdr of the
|
|
|
545 result is non-nil if and only if the completion returned in the car
|
|
|
546 was unique.
|
|
428
|
547 */
|
|
444
|
548 (partial_username))
|
|
428
|
549 {
|
|
|
550 int uniq;
|
|
444
|
551 Lisp_Object completed = user_name_completion (partial_username, 0, &uniq);
|
|
428
|
552 return Fcons (completed, uniq ? Qt : Qnil);
|
|
|
553 }
|
|
|
554
|
|
|
555 DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /*
|
|
444
|
556 Return a list of all user name completions from PARTIAL-USERNAME.
|
|
|
557 These are all the user names which begin with PARTIAL-USERNAME.
|
|
428
|
558 */
|
|
444
|
559 (partial_username))
|
|
428
|
560 {
|
|
444
|
561 return user_name_completion (partial_username, 1, NULL);
|
|
428
|
562 }
|
|
|
563
|
|
440
|
564 struct user_name
|
|
|
565 {
|
|
|
566 Bufbyte *ptr;
|
|
|
567 size_t len;
|
|
|
568 };
|
|
|
569
|
|
|
570 struct user_cache
|
|
|
571 {
|
|
|
572 struct user_name *user_names;
|
|
428
|
573 int length;
|
|
|
574 int size;
|
|
|
575 EMACS_TIME last_rebuild_time;
|
|
|
576 };
|
|
|
577 static struct user_cache user_cache;
|
|
|
578
|
|
|
579 static void
|
|
|
580 free_user_cache (struct user_cache *cache)
|
|
|
581 {
|
|
|
582 int i;
|
|
|
583 for (i = 0; i < cache->length; i++)
|
|
440
|
584 xfree (cache->user_names[i].ptr);
|
|
|
585 xfree (cache->user_names);
|
|
|
586 xzero (*cache);
|
|
428
|
587 }
|
|
|
588
|
|
|
589 static Lisp_Object
|
|
440
|
590 user_name_completion_unwind (Lisp_Object cache_incomplete_p)
|
|
428
|
591 {
|
|
440
|
592 endpwent ();
|
|
|
593 speed_up_interrupts ();
|
|
428
|
594
|
|
440
|
595 if (! NILP (XCAR (cache_incomplete_p)))
|
|
|
596 free_user_cache (&user_cache);
|
|
|
597
|
|
|
598 free_cons (XCONS (cache_incomplete_p));
|
|
428
|
599
|
|
|
600 return Qnil;
|
|
|
601 }
|
|
|
602
|
|
440
|
603 #define USER_CACHE_TTL (24*60*60) /* Time to live: 1 day, in seconds */
|
|
428
|
604
|
|
|
605 static Lisp_Object
|
|
|
606 user_name_completion (Lisp_Object user, int all_flag, int *uniq)
|
|
|
607 {
|
|
|
608 /* This function can GC */
|
|
|
609 int matchcount = 0;
|
|
|
610 Lisp_Object bestmatch = Qnil;
|
|
|
611 Charcount bestmatchsize = 0;
|
|
|
612 Charcount user_name_length;
|
|
|
613 EMACS_TIME t;
|
|
|
614 int i;
|
|
|
615 struct gcpro gcpro1, gcpro2;
|
|
|
616
|
|
|
617 GCPRO2 (user, bestmatch);
|
|
|
618
|
|
|
619 CHECK_STRING (user);
|
|
|
620
|
|
|
621 user_name_length = XSTRING_CHAR_LENGTH (user);
|
|
|
622
|
|
|
623 /* Cache user name lookups because it tends to be quite slow.
|
|
|
624 * Rebuild the cache occasionally to catch changes */
|
|
|
625 EMACS_GET_TIME (t);
|
|
440
|
626 if (user_cache.user_names &&
|
|
428
|
627 (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time)
|
|
440
|
628 > USER_CACHE_TTL))
|
|
|
629 free_user_cache (&user_cache);
|
|
428
|
630
|
|
440
|
631 if (!user_cache.user_names)
|
|
428
|
632 {
|
|
|
633 struct passwd *pwd;
|
|
440
|
634 Lisp_Object cache_incomplete_p = noseeum_cons (Qt, Qnil);
|
|
|
635 int speccount = specpdl_depth ();
|
|
|
636
|
|
428
|
637 slow_down_interrupts ();
|
|
|
638 setpwent ();
|
|
440
|
639 record_unwind_protect (user_name_completion_unwind, cache_incomplete_p);
|
|
428
|
640 while ((pwd = getpwent ()))
|
|
|
641 {
|
|
|
642 QUIT;
|
|
440
|
643 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
644 user_cache.length + 1, struct user_name);
|
|
|
645 TO_INTERNAL_FORMAT (C_STRING, pwd->pw_name,
|
|
|
646 MALLOC,
|
|
|
647 (user_cache.user_names[user_cache.length].ptr,
|
|
|
648 user_cache.user_names[user_cache.length].len),
|
|
|
649 Qnative);
|
|
|
650 user_cache.length++;
|
|
428
|
651 }
|
|
440
|
652 XCAR (cache_incomplete_p) = Qnil;
|
|
|
653 unbind_to (speccount, Qnil);
|
|
|
654
|
|
428
|
655 EMACS_GET_TIME (user_cache.last_rebuild_time);
|
|
|
656 }
|
|
|
657
|
|
|
658 for (i = 0; i < user_cache.length; i++)
|
|
|
659 {
|
|
440
|
660 Bufbyte *u_name = user_cache.user_names[i].ptr;
|
|
|
661 Bytecount len = user_cache.user_names[i].len;
|
|
428
|
662 /* scmp() works in chars, not bytes, so we have to compute this: */
|
|
|
663 Charcount cclen = bytecount_to_charcount (u_name, len);
|
|
|
664
|
|
|
665 QUIT;
|
|
|
666
|
|
|
667 if (cclen < user_name_length
|
|
|
668 || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0))
|
|
|
669 continue;
|
|
|
670
|
|
|
671 matchcount++; /* count matching completions */
|
|
|
672
|
|
|
673 if (all_flag || NILP (bestmatch))
|
|
|
674 {
|
|
|
675 Lisp_Object name = Qnil;
|
|
|
676 struct gcpro ngcpro1;
|
|
|
677 NGCPRO1 (name);
|
|
|
678 /* This is a possible completion */
|
|
|
679 name = make_string (u_name, len);
|
|
|
680 if (all_flag)
|
|
|
681 {
|
|
|
682 bestmatch = Fcons (name, bestmatch);
|
|
|
683 }
|
|
|
684 else
|
|
|
685 {
|
|
|
686 bestmatch = name;
|
|
|
687 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
688 }
|
|
|
689 NUNGCPRO;
|
|
|
690 }
|
|
|
691 else
|
|
|
692 {
|
|
|
693 Charcount compare = min (bestmatchsize, cclen);
|
|
|
694 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
695 Bufbyte *p2 = u_name;
|
|
|
696 Charcount matchsize = scmp_1 (p1, p2, compare, 0);
|
|
|
697
|
|
|
698 if (matchsize < 0)
|
|
|
699 matchsize = compare;
|
|
|
700
|
|
|
701 bestmatchsize = matchsize;
|
|
|
702 }
|
|
|
703 }
|
|
|
704
|
|
|
705 UNGCPRO;
|
|
|
706
|
|
|
707 if (uniq)
|
|
|
708 *uniq = (matchcount == 1);
|
|
|
709
|
|
|
710 if (all_flag || NILP (bestmatch))
|
|
|
711 return bestmatch;
|
|
|
712 if (matchcount == 1 && bestmatchsize == user_name_length)
|
|
|
713 return Qt;
|
|
|
714 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
715 }
|
|
442
|
716 #endif /* ! defined WIN32_NATIVE */
|
|
428
|
717
|
|
|
718
|
|
|
719 Lisp_Object
|
|
442
|
720 make_directory_hash_table (const char *path)
|
|
428
|
721 {
|
|
|
722 DIR *d;
|
|
|
723 if ((d = opendir (path)))
|
|
|
724 {
|
|
|
725 DIRENTRY *dp;
|
|
|
726 Lisp_Object hash =
|
|
|
727 make_lisp_hash_table (20, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
728
|
|
|
729 while ((dp = readdir (d)))
|
|
|
730 {
|
|
|
731 Bytecount len = NAMLEN (dp);
|
|
|
732 if (DIRENTRY_NONEMPTY (dp))
|
|
|
733 /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
|
|
|
734 Fputhash (make_string ((Bufbyte *) dp->d_name, len), Qt, hash);
|
|
|
735 }
|
|
|
736 closedir (d);
|
|
|
737 return hash;
|
|
|
738 }
|
|
|
739 else
|
|
|
740 return Qnil;
|
|
|
741 }
|
|
|
742
|
|
|
743 Lisp_Object
|
|
|
744 wasteful_word_to_lisp (unsigned int item)
|
|
|
745 {
|
|
|
746 /* Compatibility: in other versions, file-attributes returns a LIST
|
|
|
747 of two 16 bit integers... */
|
|
|
748 Lisp_Object cons = word_to_lisp (item);
|
|
|
749 XCDR (cons) = Fcons (XCDR (cons), Qnil);
|
|
|
750 return cons;
|
|
|
751 }
|
|
|
752
|
|
|
753 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 0, /*
|
|
|
754 Return a list of attributes of file FILENAME.
|
|
|
755 Value is nil if specified file cannot be opened.
|
|
|
756 Otherwise, list elements are:
|
|
|
757 0. t for directory, string (name linked to) for symbolic link, or nil.
|
|
|
758 1. Number of links to file.
|
|
|
759 2. File uid.
|
|
|
760 3. File gid.
|
|
|
761 4. Last access time, as a list of two integers.
|
|
|
762 First integer has high-order 16 bits of time, second has low 16 bits.
|
|
|
763 5. Last modification time, likewise.
|
|
|
764 6. Last status change time, likewise.
|
|
|
765 7. Size in bytes. (-1, if number is out of range).
|
|
|
766 8. File modes, as a string of ten letters or dashes as in ls -l.
|
|
|
767 9. t iff file's gid would change if file were deleted and recreated.
|
|
|
768 10. inode number.
|
|
|
769 11. Device number.
|
|
|
770
|
|
|
771 If file does not exist, returns nil.
|
|
|
772 */
|
|
|
773 (filename))
|
|
|
774 {
|
|
|
775 /* This function can GC. GC checked 1997.06.04. */
|
|
|
776 Lisp_Object values[12];
|
|
|
777 Lisp_Object directory = Qnil;
|
|
|
778 struct stat s;
|
|
|
779 char modes[10];
|
|
|
780 Lisp_Object handler;
|
|
|
781 struct gcpro gcpro1, gcpro2;
|
|
|
782
|
|
|
783 GCPRO2 (filename, directory);
|
|
|
784 filename = Fexpand_file_name (filename, Qnil);
|
|
|
785
|
|
|
786 /* If the file name has special constructs in it,
|
|
|
787 call the corresponding file handler. */
|
|
|
788 handler = Ffind_file_name_handler (filename, Qfile_attributes);
|
|
|
789 if (!NILP (handler))
|
|
|
790 {
|
|
|
791 UNGCPRO;
|
|
|
792 return call2 (handler, Qfile_attributes, filename);
|
|
|
793 }
|
|
|
794
|
|
|
795 if (lstat ((char *) XSTRING_DATA (filename), &s) < 0)
|
|
|
796 {
|
|
|
797 UNGCPRO;
|
|
|
798 return Qnil;
|
|
|
799 }
|
|
|
800
|
|
|
801 #ifdef BSD4_2
|
|
|
802 directory = Ffile_name_directory (filename);
|
|
|
803 #endif
|
|
|
804
|
|
442
|
805 #if 0 /* #### shouldn't this apply to WIN32_NATIVE and maybe CYGWIN? */
|
|
428
|
806 {
|
|
|
807 char *tmpnam = (char *) XSTRING_DATA (Ffile_name_nondirectory (filename));
|
|
|
808 int l = strlen (tmpnam);
|
|
|
809
|
|
|
810 if (l >= 5
|
|
|
811 && S_ISREG (s.st_mode)
|
|
|
812 && (stricmp (&tmpnam[l - 4], ".com") == 0 ||
|
|
|
813 stricmp (&tmpnam[l - 4], ".exe") == 0 ||
|
|
|
814 stricmp (&tmpnam[l - 4], ".bat") == 0))
|
|
|
815 {
|
|
|
816 s.st_mode |= S_IEXEC;
|
|
|
817 }
|
|
|
818 }
|
|
442
|
819 #endif
|
|
428
|
820
|
|
|
821 switch (s.st_mode & S_IFMT)
|
|
|
822 {
|
|
|
823 default:
|
|
|
824 values[0] = Qnil;
|
|
|
825 break;
|
|
|
826 case S_IFDIR:
|
|
|
827 values[0] = Qt;
|
|
|
828 break;
|
|
|
829 #ifdef S_IFLNK
|
|
|
830 case S_IFLNK:
|
|
|
831 values[0] = Ffile_symlink_p (filename);
|
|
|
832 break;
|
|
|
833 #endif
|
|
|
834 }
|
|
|
835 values[1] = make_int (s.st_nlink);
|
|
|
836 values[2] = make_int (s.st_uid);
|
|
|
837 values[3] = make_int (s.st_gid);
|
|
|
838 values[4] = wasteful_word_to_lisp (s.st_atime);
|
|
|
839 values[5] = wasteful_word_to_lisp (s.st_mtime);
|
|
|
840 values[6] = wasteful_word_to_lisp (s.st_ctime);
|
|
|
841 values[7] = make_int ((EMACS_INT) s.st_size);
|
|
|
842 /* If the size is out of range, give back -1. */
|
|
|
843 /* #### Fix when Emacs gets bignums! */
|
|
|
844 if (XINT (values[7]) != s.st_size)
|
|
|
845 values[7] = make_int (-1);
|
|
|
846 filemodestring (&s, modes);
|
|
|
847 values[8] = make_string ((Bufbyte *) modes, 10);
|
|
|
848 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
|
|
|
849 {
|
|
|
850 struct stat sdir;
|
|
|
851
|
|
442
|
852 if (!NILP (directory) && xemacs_stat ((char *) XSTRING_DATA (directory), &sdir) == 0)
|
|
428
|
853 values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
|
|
|
854 else /* if we can't tell, assume worst */
|
|
|
855 values[9] = Qt;
|
|
|
856 }
|
|
|
857 #else /* file gid will be egid */
|
|
|
858 values[9] = (s.st_gid != getegid ()) ? Qt : Qnil;
|
|
|
859 #endif /* BSD4_2 or BSD4_3 */
|
|
|
860 values[10] = make_int (s.st_ino);
|
|
|
861 values[11] = make_int (s.st_dev);
|
|
|
862 UNGCPRO;
|
|
|
863 return Flist (countof (values), values);
|
|
|
864 }
|
|
|
865
|
|
|
866
|
|
|
867 /************************************************************************/
|
|
|
868 /* initialization */
|
|
|
869 /************************************************************************/
|
|
|
870
|
|
|
871 void
|
|
|
872 syms_of_dired (void)
|
|
|
873 {
|
|
|
874 defsymbol (&Qdirectory_files, "directory-files");
|
|
|
875 defsymbol (&Qfile_name_completion, "file-name-completion");
|
|
|
876 defsymbol (&Qfile_name_all_completions, "file-name-all-completions");
|
|
|
877 defsymbol (&Qfile_attributes, "file-attributes");
|
|
|
878
|
|
|
879 DEFSUBR (Fdirectory_files);
|
|
|
880 DEFSUBR (Ffile_name_completion);
|
|
|
881 DEFSUBR (Ffile_name_all_completions);
|
|
442
|
882 #ifndef WIN32_NATIVE
|
|
428
|
883 DEFSUBR (Fuser_name_completion);
|
|
|
884 DEFSUBR (Fuser_name_completion_1);
|
|
|
885 DEFSUBR (Fuser_name_all_completions);
|
|
|
886 #endif
|
|
|
887 DEFSUBR (Ffile_attributes);
|
|
|
888 }
|
|
|
889
|
|
|
890 void
|
|
|
891 vars_of_dired (void)
|
|
|
892 {
|
|
|
893 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /*
|
|
|
894 *Completion ignores filenames ending in any string in this list.
|
|
|
895 This variable does not affect lists of possible completions,
|
|
|
896 but does affect the commands that actually do completions.
|
|
|
897 It is used by the functions `file-name-completion' and
|
|
|
898 `file-name-all-completions'.
|
|
|
899 */ );
|
|
|
900 Vcompletion_ignored_extensions = Qnil;
|
|
|
901 }
|
