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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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36
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37 Lisp_Object Vcompletion_ignored_extensions;
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38 Lisp_Object Qdirectory_files;
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39 Lisp_Object Qfile_name_completion;
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40 Lisp_Object Qfile_name_all_completions;
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41 Lisp_Object Qfile_attributes;
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42
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43 static Lisp_Object
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44 close_directory_unwind (Lisp_Object unwind_obj)
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45 {
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46 DIR *d = (DIR *)get_opaque_ptr (unwind_obj);
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47 closedir (d);
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48 free_opaque_ptr (unwind_obj);
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49 return Qnil;
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50 }
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51
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52 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /*
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53 Return a list of names of files in DIRECTORY.
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54 There are four optional arguments:
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55 If FULL is non-nil, absolute pathnames of the files are returned.
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56 If MATCH is non-nil, only pathnames containing that regexp are returned.
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57 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
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58 NOSORT is useful if you plan to sort the result yourself.
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59 If FILES-ONLY is the symbol t, then only the "files" in the directory
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60 will be returned; subdirectories will be excluded. If FILES-ONLY is not
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61 nil and not t, then only the subdirectories will be returned. Otherwise,
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62 if FILES-ONLY is nil (the default) then both files and subdirectories will
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63 be returned.
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64 */
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65 (directory, full, match, nosort, files_only))
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66 {
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67 /* This function can GC */
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68 DIR *d;
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69 Lisp_Object list = Qnil;
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70 Bytecount directorylen;
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71 Lisp_Object handler;
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72 struct re_pattern_buffer *bufp = NULL;
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73 int speccount = specpdl_depth ();
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74 char *statbuf, *statbuf_tail;
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75
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76 struct gcpro gcpro1, gcpro2;
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77 GCPRO2 (directory, list);
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78
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79 /* If the file name has special constructs in it,
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80 call the corresponding file handler. */
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81 handler = Ffind_file_name_handler (directory, Qdirectory_files);
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82 if (!NILP (handler))
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83 {
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84 UNGCPRO;
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85 if (!NILP (files_only))
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86 return call6 (handler, Qdirectory_files, directory, full, match,
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87 nosort, files_only);
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88 else
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89 return call5 (handler, Qdirectory_files, directory, full, match,
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90 nosort);
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91 }
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92
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93 /* #### why do we do Fexpand_file_name after file handlers here,
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94 but earlier everywhere else? */
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95 directory = Fexpand_file_name (directory, Qnil);
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96 directory = Ffile_name_as_directory (directory);
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97 directorylen = XSTRING_LENGTH (directory);
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98
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99 statbuf = (char *)alloca (directorylen + MAXNAMLEN + 1);
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100 memcpy (statbuf, XSTRING_DATA (directory), directorylen);
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101 statbuf_tail = statbuf + directorylen;
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102
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103 /* XEmacs: this should come after Ffile_name_as_directory() to avoid
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104 potential regexp cache smashage. It comes before the opendir()
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105 because it might signal an error. */
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106 if (!NILP (match))
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107 {
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108 CHECK_STRING (match);
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109
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110 /* MATCH might be a flawed regular expression. Rather than
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111 catching and signalling our own errors, we just call
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112 compile_pattern to do the work for us. */
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113 bufp = compile_pattern (match, 0, 0, 0, ERROR_ME);
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114 }
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115
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116 /* Now *bufp is the compiled form of MATCH; don't call anything
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117 which might compile a new regexp until we're done with the loop! */
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118
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119 /* Do this opendir after anything which might signal an error.
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120 NOTE: the above comment is old; previously, there was no
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121 unwind-protection in case of error, but now there is. */
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122 d = opendir ((char *) XSTRING_DATA (directory));
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123 if (!d)
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124 report_file_error ("Opening directory", list1 (directory));
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125
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126 record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d));
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127
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128 /* Loop reading blocks */
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129 while (1)
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130 {
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131 DIRENTRY *dp = readdir (d);
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132 int len;
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133
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134 if (!dp)
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135 break;
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136 len = NAMLEN (dp);
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137 if (DIRENTRY_NONEMPTY (dp)
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138 && (NILP (match)
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139 || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))))
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140 {
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141 if (!NILP (files_only))
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142 {
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143 struct stat st;
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144 int dir_p = 0;
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145
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146 memcpy (statbuf_tail, dp->d_name, len);
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147 statbuf_tail[len] = 0;
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148
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442
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149 if (xemacs_stat (statbuf, &st) == 0
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428
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150 && (st.st_mode & S_IFMT) == S_IFDIR)
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151 dir_p = 1;
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152
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153 if (EQ (files_only, Qt) && dir_p)
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154 continue;
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155 else if (!EQ (files_only, Qt) && !dir_p)
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156 continue;
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157 }
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158
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159 {
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160 Lisp_Object name =
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161 make_string ((Bufbyte *)dp->d_name, len);
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162 if (!NILP (full))
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163 name = concat2 (directory, name);
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164
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165 list = Fcons (name, list);
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166 }
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167 }
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168 }
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169 unbind_to (speccount, Qnil); /* This will close the dir */
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170
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171 if (NILP (nosort))
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172 list = Fsort (Fnreverse (list), Qstring_lessp);
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173
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174 RETURN_UNGCPRO (list);
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175 }
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176
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177 static Lisp_Object file_name_completion (Lisp_Object file,
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178 Lisp_Object directory,
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179 int all_flag, int ver_flag);
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180
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181 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
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444
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182 Complete file name PARTIAL-FILENAME in directory DIRECTORY.
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183 Return the longest prefix common to all file names in DIRECTORY
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184 that start with PARTIAL-FILENAME.
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185 If there is only one and PARTIAL-FILENAME matches it exactly, return t.
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186 Return nil if DIRECTORY contains no name starting with PARTIAL-FILENAME.
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428
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187
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444
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188 File names which end with any member of `completion-ignored-extensions'
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189 are not considered as possible completions for PARTIAL-FILENAME unless
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190 there is no other possible completion. `completion-ignored-extensions'
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191 is not applied to the names of directories.
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428
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192 */
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444
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193 (partial_filename, directory))
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428
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194 {
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195 /* This function can GC. GC checked 1996.04.06. */
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196 Lisp_Object handler;
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197
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198 /* If the directory name has special constructs in it,
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199 call the corresponding file handler. */
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200 handler = Ffind_file_name_handler (directory, Qfile_name_completion);
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201 if (!NILP (handler))
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444
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202 return call3 (handler, Qfile_name_completion, partial_filename, directory);
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428
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203
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204 /* If the file name has special constructs in it,
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205 call the corresponding file handler. */
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444
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206 handler = Ffind_file_name_handler (partial_filename, Qfile_name_completion);
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428
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207 if (!NILP (handler))
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444
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208 return call3 (handler, Qfile_name_completion, partial_filename, directory);
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428
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209
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444
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210 return file_name_completion (partial_filename, directory, 0, 0);
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428
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211 }
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212
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213 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
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444
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214 Return a list of all completions of PARTIAL-FILENAME in DIRECTORY.
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215 These are all file names in DIRECTORY which begin with PARTIAL-FILENAME.
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428
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216
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217 File names which end with any member of `completion-ignored-extensions'
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444
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218 are not considered as possible completions for PARTIAL-FILENAME unless
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219 there is no other possible completion. `completion-ignored-extensions'
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220 is not applied to the names of directories.
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428
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221 */
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444
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222 (partial_filename, directory))
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428
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223 {
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224 /* This function can GC. GC checked 1997.06.04. */
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225 Lisp_Object handler;
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226 struct gcpro gcpro1;
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227
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228 GCPRO1 (directory);
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229 directory = Fexpand_file_name (directory, Qnil);
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230 /* If the file name has special constructs in it,
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231 call the corresponding file handler. */
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232 handler = Ffind_file_name_handler (directory, Qfile_name_all_completions);
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233 UNGCPRO;
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234 if (!NILP (handler))
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444
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235 return call3 (handler, Qfile_name_all_completions, partial_filename,
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428
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236 directory);
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237
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444
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238 return file_name_completion (partial_filename, directory, 1, 0);
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428
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239 }
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240
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241 static int
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242 file_name_completion_stat (Lisp_Object directory, DIRENTRY *dp,
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243 struct stat *st_addr)
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244 {
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245 Bytecount len = NAMLEN (dp);
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246 Bytecount pos = XSTRING_LENGTH (directory);
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247 int value;
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248 char *fullname = (char *) alloca (len + pos + 2);
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249
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250 memcpy (fullname, XSTRING_DATA (directory), pos);
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251 if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
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252 fullname[pos++] = DIRECTORY_SEP;
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253
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254 memcpy (fullname + pos, dp->d_name, len);
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255 fullname[pos + len] = 0;
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256
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257 #ifdef S_IFLNK
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258 /* We want to return success if a link points to a nonexistent file,
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259 but we want to return the status for what the link points to,
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260 in case it is a directory. */
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261 value = lstat (fullname, st_addr);
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262 if (S_ISLNK (st_addr->st_mode))
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442
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263 xemacs_stat (fullname, st_addr);
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428
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264 #else
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442
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265 value = xemacs_stat (fullname, st_addr);
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428
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266 #endif
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267 return value;
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268 }
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269
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270 static Lisp_Object
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271 file_name_completion_unwind (Lisp_Object locative)
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272 {
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273 DIR *d;
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274 Lisp_Object obj = XCAR (locative);
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275
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276 if (!NILP (obj))
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277 {
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278 d = (DIR *)get_opaque_ptr (obj);
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279 closedir (d);
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280 free_opaque_ptr (obj);
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281 }
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282 free_cons (XCONS (locative));
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283 return Qnil;
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284 }
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285
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286 static Lisp_Object
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287 file_name_completion (Lisp_Object file, Lisp_Object directory, int all_flag,
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288 int ver_flag)
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289 {
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290 /* This function can GC */
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291 DIR *d = 0;
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292 int matchcount = 0;
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293 Lisp_Object bestmatch = Qnil;
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294 Charcount bestmatchsize = 0;
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295 struct stat st;
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296 int passcount;
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297 int speccount = specpdl_depth ();
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298 Charcount file_name_length;
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299 Lisp_Object locative;
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300 struct gcpro gcpro1, gcpro2, gcpro3;
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301
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302 GCPRO3 (file, directory, bestmatch);
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303
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304 CHECK_STRING (file);
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305
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442
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306 #ifdef WIN32_NATIVE
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428
|
307 /* Filename completion on Windows ignores case, since Windows
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308 filesystems do. */
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309 specbind (Qcompletion_ignore_case, Qt);
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442
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310 #endif /* WIN32_NATIVE */
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428
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311
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|
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312 #ifdef FILE_SYSTEM_CASE
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313 file = FILE_SYSTEM_CASE (file);
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314 #endif
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315 directory = Fexpand_file_name (directory, Qnil);
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316 file_name_length = XSTRING_CHAR_LENGTH (file);
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317
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318 /* With passcount = 0, ignore files that end in an ignored extension.
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319 If nothing found then try again with passcount = 1, don't ignore them.
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320 If looking for all completions, start with passcount = 1,
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321 so always take even the ignored ones.
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322
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323 ** It would not actually be helpful to the user to ignore any possible
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324 completions when making a list of them.** */
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325
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|
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326 /* We cannot use close_directory_unwind() because we change the
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327 directory. The old code used to just avoid signaling errors, and
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328 call closedir, but it was wrong, because it made sane handling of
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329 QUIT impossible and, besides, various utility functions like
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330 regexp_ignore_completion_p can signal errors. */
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|
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331 locative = noseeum_cons (Qnil, Qnil);
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|
|
332 record_unwind_protect (file_name_completion_unwind, locative);
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333
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|
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334 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
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|
|
335 {
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|
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336 d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (directory)));
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|
|
337 if (!d)
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|
|
338 report_file_error ("Opening directory", list1 (directory));
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|
|
339 XCAR (locative) = make_opaque_ptr ((void *)d);
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|
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340
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|
|
341 /* Loop reading blocks */
|
|
|
342 while (1)
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|
|
343 {
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|
|
344 DIRENTRY *dp;
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|
|
345 Bytecount len;
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|
|
346 /* scmp() works in characters, not bytes, so we have to compute
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|
|
347 this value: */
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|
|
348 Charcount cclen;
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|
|
349 int directoryp;
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|
|
350 int ignored_extension_p = 0;
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|
|
351 Bufbyte *d_name;
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|
|
352
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|
|
353 dp = readdir (d);
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|
|
354 if (!dp) break;
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|
|
355
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|
|
356 /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
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|
|
357 d_name = (Bufbyte *) dp->d_name;
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|
|
358 len = NAMLEN (dp);
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|
|
359 cclen = bytecount_to_charcount (d_name, len);
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|
|
360
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|
|
361 QUIT;
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|
|
362
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|
|
363 if (! DIRENTRY_NONEMPTY (dp)
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|
|
364 || cclen < file_name_length
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|
|
365 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
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|
|
366 continue;
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|
|
367
|
|
|
368 if (file_name_completion_stat (directory, dp, &st) < 0)
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|
|
369 continue;
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|
|
370
|
|
|
371 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
372 if (directoryp)
|
|
|
373 {
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|
|
374 #ifndef TRIVIAL_DIRECTORY_ENTRY
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|
|
375 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
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|
|
376 #endif
|
|
|
377 /* "." and ".." are never interesting as completions, but are
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|
|
378 actually in the way in a directory containing only one file. */
|
|
|
379 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
|
|
|
380 continue;
|
|
|
381 }
|
|
|
382 else
|
|
|
383 {
|
|
|
384 /* Compare extensions-to-be-ignored against end of this file name */
|
|
|
385 /* if name is not an exact match against specified string. */
|
|
|
386 if (!passcount && cclen > file_name_length)
|
|
|
387 {
|
|
|
388 Lisp_Object tem;
|
|
|
389 /* and exit this for loop if a match is found */
|
|
|
390 EXTERNAL_LIST_LOOP (tem, Vcompletion_ignored_extensions)
|
|
|
391 {
|
|
|
392 Lisp_Object elt = XCAR (tem);
|
|
|
393 Charcount skip;
|
|
|
394
|
|
|
395 CHECK_STRING (elt);
|
|
|
396
|
|
|
397 skip = cclen - XSTRING_CHAR_LENGTH (elt);
|
|
|
398 if (skip < 0) continue;
|
|
|
399
|
|
|
400 if (0 > scmp (charptr_n_addr (d_name, skip),
|
|
|
401 XSTRING_DATA (elt),
|
|
|
402 XSTRING_CHAR_LENGTH (elt)))
|
|
|
403 {
|
|
|
404 ignored_extension_p = 1;
|
|
|
405 break;
|
|
|
406 }
|
|
|
407 }
|
|
|
408 }
|
|
|
409 }
|
|
|
410
|
|
|
411 /* If an ignored-extensions match was found,
|
|
|
412 don't process this name as a completion. */
|
|
|
413 if (!passcount && ignored_extension_p)
|
|
|
414 continue;
|
|
|
415
|
|
|
416 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, cclen))
|
|
|
417 continue;
|
|
|
418
|
|
|
419 /* Update computation of how much all possible completions match */
|
|
|
420 matchcount++;
|
|
|
421
|
|
|
422 if (all_flag || NILP (bestmatch))
|
|
|
423 {
|
|
|
424 Lisp_Object name = Qnil;
|
|
|
425 struct gcpro ngcpro1;
|
|
|
426 NGCPRO1 (name);
|
|
|
427 /* This is a possible completion */
|
|
|
428 name = make_string (d_name, len);
|
|
|
429 if (directoryp) /* Completion is a directory; end it with '/' */
|
|
|
430 name = Ffile_name_as_directory (name);
|
|
|
431 if (all_flag)
|
|
|
432 {
|
|
|
433 bestmatch = Fcons (name, bestmatch);
|
|
|
434 }
|
|
|
435 else
|
|
|
436 {
|
|
|
437 bestmatch = name;
|
|
|
438 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
439 }
|
|
|
440 NUNGCPRO;
|
|
|
441 }
|
|
|
442 else
|
|
|
443 {
|
|
|
444 Charcount compare = min (bestmatchsize, cclen);
|
|
|
445 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
446 Bufbyte *p2 = d_name;
|
|
|
447 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
448
|
|
|
449 if (matchsize < 0)
|
|
|
450 matchsize = compare;
|
|
|
451 if (completion_ignore_case)
|
|
|
452 {
|
|
|
453 /* If this is an exact match except for case,
|
|
|
454 use it as the best match rather than one that is not
|
|
|
455 an exact match. This way, we get the case pattern
|
|
|
456 of the actual match. */
|
|
|
457 if ((matchsize == cclen
|
|
|
458 && matchsize + !!directoryp
|
|
|
459 < XSTRING_CHAR_LENGTH (bestmatch))
|
|
|
460 ||
|
|
|
461 /* If there is no exact match ignoring case,
|
|
|
462 prefer a match that does not change the case
|
|
|
463 of the input. */
|
|
|
464 (((matchsize == cclen)
|
|
|
465 ==
|
|
|
466 (matchsize + !!directoryp
|
|
|
467 == XSTRING_CHAR_LENGTH (bestmatch)))
|
|
|
468 /* If there is more than one exact match aside from
|
|
|
469 case, and one of them is exact including case,
|
|
|
470 prefer that one. */
|
|
|
471 && 0 > scmp_1 (p2, XSTRING_DATA (file),
|
|
|
472 file_name_length, 0)
|
|
|
473 && 0 <= scmp_1 (p1, XSTRING_DATA (file),
|
|
|
474 file_name_length, 0)))
|
|
|
475 {
|
|
|
476 bestmatch = make_string (d_name, len);
|
|
|
477 if (directoryp)
|
|
|
478 bestmatch = Ffile_name_as_directory (bestmatch);
|
|
|
479 }
|
|
|
480 }
|
|
|
481
|
|
|
482 /* If this directory all matches,
|
|
|
483 see if implicit following slash does too. */
|
|
|
484 if (directoryp
|
|
|
485 && compare == matchsize
|
|
|
486 && bestmatchsize > matchsize
|
|
|
487 && IS_ANY_SEP (charptr_emchar_n (p1, matchsize)))
|
|
|
488 matchsize++;
|
|
|
489 bestmatchsize = matchsize;
|
|
|
490 }
|
|
|
491 }
|
|
|
492 closedir (d);
|
|
|
493 free_opaque_ptr (XCAR (locative));
|
|
|
494 XCAR (locative) = Qnil;
|
|
|
495 }
|
|
|
496
|
|
|
497 unbind_to (speccount, Qnil);
|
|
|
498
|
|
|
499 UNGCPRO;
|
|
|
500
|
|
|
501 if (all_flag || NILP (bestmatch))
|
|
|
502 return bestmatch;
|
|
|
503 if (matchcount == 1 && bestmatchsize == file_name_length)
|
|
|
504 return Qt;
|
|
|
505 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
506 }
|
|
|
507
|
|
|
508
|
|
|
509
|
|
442
|
510 /* The *pwent() functions do not exist on NT. #### The NT equivalent
|
|
|
511 is NetUserEnum(), and rewriting to use it is not hard.*/
|
|
|
512 #ifndef WIN32_NATIVE
|
|
428
|
513
|
|
|
514 static Lisp_Object user_name_completion (Lisp_Object user,
|
|
|
515 int all_flag,
|
|
|
516 int *uniq);
|
|
|
517
|
|
|
518 DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /*
|
|
444
|
519 Complete user name from PARTIAL-USERNAME.
|
|
|
520 Return the longest prefix common to all user names starting with
|
|
|
521 PARTIAL-USERNAME. If there is only one and PARTIAL-USERNAME matches
|
|
|
522 it exactly, returns t. Return nil if there is no user name starting
|
|
|
523 with PARTIAL-USERNAME.
|
|
428
|
524 */
|
|
444
|
525 (partial_username))
|
|
428
|
526 {
|
|
444
|
527 return user_name_completion (partial_username, 0, NULL);
|
|
428
|
528 }
|
|
|
529
|
|
|
530 DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /*
|
|
444
|
531 Complete user name from PARTIAL-USERNAME.
|
|
428
|
532
|
|
|
533 This function is identical to `user-name-completion', except that
|
|
|
534 the cons of the completion and an indication of whether the
|
|
|
535 completion was unique is returned.
|
|
|
536
|
|
444
|
537 The car of the returned value is the longest prefix common to all user
|
|
|
538 names that start with PARTIAL-USERNAME. If there is only one and
|
|
|
539 PARTIAL-USERNAME matches it exactly, the car is t. The car is nil if
|
|
|
540 there is no user name starting with PARTIAL-USERNAME. The cdr of the
|
|
|
541 result is non-nil if and only if the completion returned in the car
|
|
|
542 was unique.
|
|
428
|
543 */
|
|
444
|
544 (partial_username))
|
|
428
|
545 {
|
|
|
546 int uniq;
|
|
444
|
547 Lisp_Object completed = user_name_completion (partial_username, 0, &uniq);
|
|
428
|
548 return Fcons (completed, uniq ? Qt : Qnil);
|
|
|
549 }
|
|
|
550
|
|
|
551 DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /*
|
|
444
|
552 Return a list of all user name completions from PARTIAL-USERNAME.
|
|
|
553 These are all the user names which begin with PARTIAL-USERNAME.
|
|
428
|
554 */
|
|
444
|
555 (partial_username))
|
|
428
|
556 {
|
|
444
|
557 return user_name_completion (partial_username, 1, NULL);
|
|
428
|
558 }
|
|
|
559
|
|
440
|
560 struct user_name
|
|
|
561 {
|
|
|
562 Bufbyte *ptr;
|
|
|
563 size_t len;
|
|
|
564 };
|
|
|
565
|
|
|
566 struct user_cache
|
|
|
567 {
|
|
|
568 struct user_name *user_names;
|
|
428
|
569 int length;
|
|
|
570 int size;
|
|
|
571 EMACS_TIME last_rebuild_time;
|
|
|
572 };
|
|
|
573 static struct user_cache user_cache;
|
|
|
574
|
|
|
575 static void
|
|
|
576 free_user_cache (struct user_cache *cache)
|
|
|
577 {
|
|
|
578 int i;
|
|
|
579 for (i = 0; i < cache->length; i++)
|
|
440
|
580 xfree (cache->user_names[i].ptr);
|
|
|
581 xfree (cache->user_names);
|
|
|
582 xzero (*cache);
|
|
428
|
583 }
|
|
|
584
|
|
|
585 static Lisp_Object
|
|
440
|
586 user_name_completion_unwind (Lisp_Object cache_incomplete_p)
|
|
428
|
587 {
|
|
440
|
588 endpwent ();
|
|
|
589 speed_up_interrupts ();
|
|
428
|
590
|
|
440
|
591 if (! NILP (XCAR (cache_incomplete_p)))
|
|
|
592 free_user_cache (&user_cache);
|
|
|
593
|
|
|
594 free_cons (XCONS (cache_incomplete_p));
|
|
428
|
595
|
|
|
596 return Qnil;
|
|
|
597 }
|
|
|
598
|
|
440
|
599 #define USER_CACHE_TTL (24*60*60) /* Time to live: 1 day, in seconds */
|
|
428
|
600
|
|
|
601 static Lisp_Object
|
|
|
602 user_name_completion (Lisp_Object user, int all_flag, int *uniq)
|
|
|
603 {
|
|
|
604 /* This function can GC */
|
|
|
605 int matchcount = 0;
|
|
|
606 Lisp_Object bestmatch = Qnil;
|
|
|
607 Charcount bestmatchsize = 0;
|
|
|
608 Charcount user_name_length;
|
|
|
609 EMACS_TIME t;
|
|
|
610 int i;
|
|
|
611 struct gcpro gcpro1, gcpro2;
|
|
|
612
|
|
|
613 GCPRO2 (user, bestmatch);
|
|
|
614
|
|
|
615 CHECK_STRING (user);
|
|
|
616
|
|
|
617 user_name_length = XSTRING_CHAR_LENGTH (user);
|
|
|
618
|
|
|
619 /* Cache user name lookups because it tends to be quite slow.
|
|
|
620 * Rebuild the cache occasionally to catch changes */
|
|
|
621 EMACS_GET_TIME (t);
|
|
440
|
622 if (user_cache.user_names &&
|
|
428
|
623 (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time)
|
|
440
|
624 > USER_CACHE_TTL))
|
|
|
625 free_user_cache (&user_cache);
|
|
428
|
626
|
|
440
|
627 if (!user_cache.user_names)
|
|
428
|
628 {
|
|
|
629 struct passwd *pwd;
|
|
440
|
630 Lisp_Object cache_incomplete_p = noseeum_cons (Qt, Qnil);
|
|
|
631 int speccount = specpdl_depth ();
|
|
|
632
|
|
428
|
633 slow_down_interrupts ();
|
|
|
634 setpwent ();
|
|
440
|
635 record_unwind_protect (user_name_completion_unwind, cache_incomplete_p);
|
|
428
|
636 while ((pwd = getpwent ()))
|
|
|
637 {
|
|
|
638 QUIT;
|
|
440
|
639 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
640 user_cache.length + 1, struct user_name);
|
|
|
641 TO_INTERNAL_FORMAT (C_STRING, pwd->pw_name,
|
|
|
642 MALLOC,
|
|
|
643 (user_cache.user_names[user_cache.length].ptr,
|
|
|
644 user_cache.user_names[user_cache.length].len),
|
|
|
645 Qnative);
|
|
|
646 user_cache.length++;
|
|
428
|
647 }
|
|
440
|
648 XCAR (cache_incomplete_p) = Qnil;
|
|
|
649 unbind_to (speccount, Qnil);
|
|
|
650
|
|
428
|
651 EMACS_GET_TIME (user_cache.last_rebuild_time);
|
|
|
652 }
|
|
|
653
|
|
|
654 for (i = 0; i < user_cache.length; i++)
|
|
|
655 {
|
|
440
|
656 Bufbyte *u_name = user_cache.user_names[i].ptr;
|
|
|
657 Bytecount len = user_cache.user_names[i].len;
|
|
428
|
658 /* scmp() works in chars, not bytes, so we have to compute this: */
|
|
|
659 Charcount cclen = bytecount_to_charcount (u_name, len);
|
|
|
660
|
|
|
661 QUIT;
|
|
|
662
|
|
|
663 if (cclen < user_name_length
|
|
|
664 || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0))
|
|
|
665 continue;
|
|
|
666
|
|
|
667 matchcount++; /* count matching completions */
|
|
|
668
|
|
|
669 if (all_flag || NILP (bestmatch))
|
|
|
670 {
|
|
|
671 Lisp_Object name = Qnil;
|
|
|
672 struct gcpro ngcpro1;
|
|
|
673 NGCPRO1 (name);
|
|
|
674 /* This is a possible completion */
|
|
|
675 name = make_string (u_name, len);
|
|
|
676 if (all_flag)
|
|
|
677 {
|
|
|
678 bestmatch = Fcons (name, bestmatch);
|
|
|
679 }
|
|
|
680 else
|
|
|
681 {
|
|
|
682 bestmatch = name;
|
|
|
683 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
684 }
|
|
|
685 NUNGCPRO;
|
|
|
686 }
|
|
|
687 else
|
|
|
688 {
|
|
|
689 Charcount compare = min (bestmatchsize, cclen);
|
|
|
690 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
691 Bufbyte *p2 = u_name;
|
|
|
692 Charcount matchsize = scmp_1 (p1, p2, compare, 0);
|
|
|
693
|
|
|
694 if (matchsize < 0)
|
|
|
695 matchsize = compare;
|
|
|
696
|
|
|
697 bestmatchsize = matchsize;
|
|
|
698 }
|
|
|
699 }
|
|
|
700
|
|
|
701 UNGCPRO;
|
|
|
702
|
|
|
703 if (uniq)
|
|
|
704 *uniq = (matchcount == 1);
|
|
|
705
|
|
|
706 if (all_flag || NILP (bestmatch))
|
|
|
707 return bestmatch;
|
|
|
708 if (matchcount == 1 && bestmatchsize == user_name_length)
|
|
|
709 return Qt;
|
|
|
710 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
711 }
|
|
442
|
712 #endif /* ! defined WIN32_NATIVE */
|
|
428
|
713
|
|
|
714
|
|
|
715 Lisp_Object
|
|
442
|
716 make_directory_hash_table (const char *path)
|
|
428
|
717 {
|
|
|
718 DIR *d;
|
|
|
719 if ((d = opendir (path)))
|
|
|
720 {
|
|
|
721 DIRENTRY *dp;
|
|
|
722 Lisp_Object hash =
|
|
|
723 make_lisp_hash_table (20, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
724
|
|
|
725 while ((dp = readdir (d)))
|
|
|
726 {
|
|
|
727 Bytecount len = NAMLEN (dp);
|
|
|
728 if (DIRENTRY_NONEMPTY (dp))
|
|
|
729 /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
|
|
|
730 Fputhash (make_string ((Bufbyte *) dp->d_name, len), Qt, hash);
|
|
|
731 }
|
|
|
732 closedir (d);
|
|
|
733 return hash;
|
|
|
734 }
|
|
|
735 else
|
|
|
736 return Qnil;
|
|
|
737 }
|
|
|
738
|
|
|
739 Lisp_Object
|
|
|
740 wasteful_word_to_lisp (unsigned int item)
|
|
|
741 {
|
|
|
742 /* Compatibility: in other versions, file-attributes returns a LIST
|
|
|
743 of two 16 bit integers... */
|
|
|
744 Lisp_Object cons = word_to_lisp (item);
|
|
|
745 XCDR (cons) = Fcons (XCDR (cons), Qnil);
|
|
|
746 return cons;
|
|
|
747 }
|
|
|
748
|
|
|
749 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 0, /*
|
|
|
750 Return a list of attributes of file FILENAME.
|
|
|
751 Value is nil if specified file cannot be opened.
|
|
|
752 Otherwise, list elements are:
|
|
|
753 0. t for directory, string (name linked to) for symbolic link, or nil.
|
|
|
754 1. Number of links to file.
|
|
|
755 2. File uid.
|
|
|
756 3. File gid.
|
|
|
757 4. Last access time, as a list of two integers.
|
|
|
758 First integer has high-order 16 bits of time, second has low 16 bits.
|
|
|
759 5. Last modification time, likewise.
|
|
|
760 6. Last status change time, likewise.
|
|
|
761 7. Size in bytes. (-1, if number is out of range).
|
|
|
762 8. File modes, as a string of ten letters or dashes as in ls -l.
|
|
|
763 9. t iff file's gid would change if file were deleted and recreated.
|
|
|
764 10. inode number.
|
|
|
765 11. Device number.
|
|
|
766
|
|
|
767 If file does not exist, returns nil.
|
|
|
768 */
|
|
|
769 (filename))
|
|
|
770 {
|
|
|
771 /* This function can GC. GC checked 1997.06.04. */
|
|
|
772 Lisp_Object values[12];
|
|
|
773 Lisp_Object directory = Qnil;
|
|
|
774 struct stat s;
|
|
|
775 char modes[10];
|
|
|
776 Lisp_Object handler;
|
|
|
777 struct gcpro gcpro1, gcpro2;
|
|
|
778
|
|
|
779 GCPRO2 (filename, directory);
|
|
|
780 filename = Fexpand_file_name (filename, Qnil);
|
|
|
781
|
|
|
782 /* If the file name has special constructs in it,
|
|
|
783 call the corresponding file handler. */
|
|
|
784 handler = Ffind_file_name_handler (filename, Qfile_attributes);
|
|
|
785 if (!NILP (handler))
|
|
|
786 {
|
|
|
787 UNGCPRO;
|
|
|
788 return call2 (handler, Qfile_attributes, filename);
|
|
|
789 }
|
|
|
790
|
|
|
791 if (lstat ((char *) XSTRING_DATA (filename), &s) < 0)
|
|
|
792 {
|
|
|
793 UNGCPRO;
|
|
|
794 return Qnil;
|
|
|
795 }
|
|
|
796
|
|
|
797 #ifdef BSD4_2
|
|
|
798 directory = Ffile_name_directory (filename);
|
|
|
799 #endif
|
|
|
800
|
|
442
|
801 #if 0 /* #### shouldn't this apply to WIN32_NATIVE and maybe CYGWIN? */
|
|
428
|
802 {
|
|
|
803 char *tmpnam = (char *) XSTRING_DATA (Ffile_name_nondirectory (filename));
|
|
|
804 int l = strlen (tmpnam);
|
|
|
805
|
|
|
806 if (l >= 5
|
|
|
807 && S_ISREG (s.st_mode)
|
|
|
808 && (stricmp (&tmpnam[l - 4], ".com") == 0 ||
|
|
|
809 stricmp (&tmpnam[l - 4], ".exe") == 0 ||
|
|
|
810 stricmp (&tmpnam[l - 4], ".bat") == 0))
|
|
|
811 {
|
|
|
812 s.st_mode |= S_IEXEC;
|
|
|
813 }
|
|
|
814 }
|
|
442
|
815 #endif
|
|
428
|
816
|
|
|
817 switch (s.st_mode & S_IFMT)
|
|
|
818 {
|
|
|
819 default:
|
|
|
820 values[0] = Qnil;
|
|
|
821 break;
|
|
|
822 case S_IFDIR:
|
|
|
823 values[0] = Qt;
|
|
|
824 break;
|
|
|
825 #ifdef S_IFLNK
|
|
|
826 case S_IFLNK:
|
|
|
827 values[0] = Ffile_symlink_p (filename);
|
|
|
828 break;
|
|
|
829 #endif
|
|
|
830 }
|
|
|
831 values[1] = make_int (s.st_nlink);
|
|
|
832 values[2] = make_int (s.st_uid);
|
|
|
833 values[3] = make_int (s.st_gid);
|
|
|
834 values[4] = wasteful_word_to_lisp (s.st_atime);
|
|
|
835 values[5] = wasteful_word_to_lisp (s.st_mtime);
|
|
|
836 values[6] = wasteful_word_to_lisp (s.st_ctime);
|
|
|
837 values[7] = make_int ((EMACS_INT) s.st_size);
|
|
|
838 /* If the size is out of range, give back -1. */
|
|
|
839 /* #### Fix when Emacs gets bignums! */
|
|
|
840 if (XINT (values[7]) != s.st_size)
|
|
|
841 values[7] = make_int (-1);
|
|
|
842 filemodestring (&s, modes);
|
|
|
843 values[8] = make_string ((Bufbyte *) modes, 10);
|
|
|
844 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
|
|
|
845 {
|
|
|
846 struct stat sdir;
|
|
|
847
|
|
442
|
848 if (!NILP (directory) && xemacs_stat ((char *) XSTRING_DATA (directory), &sdir) == 0)
|
|
428
|
849 values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
|
|
|
850 else /* if we can't tell, assume worst */
|
|
|
851 values[9] = Qt;
|
|
|
852 }
|
|
|
853 #else /* file gid will be egid */
|
|
|
854 values[9] = (s.st_gid != getegid ()) ? Qt : Qnil;
|
|
|
855 #endif /* BSD4_2 or BSD4_3 */
|
|
|
856 values[10] = make_int (s.st_ino);
|
|
|
857 values[11] = make_int (s.st_dev);
|
|
|
858 UNGCPRO;
|
|
|
859 return Flist (countof (values), values);
|
|
|
860 }
|
|
|
861
|
|
|
862
|
|
|
863 /************************************************************************/
|
|
|
864 /* initialization */
|
|
|
865 /************************************************************************/
|
|
|
866
|
|
|
867 void
|
|
|
868 syms_of_dired (void)
|
|
|
869 {
|
|
|
870 defsymbol (&Qdirectory_files, "directory-files");
|
|
|
871 defsymbol (&Qfile_name_completion, "file-name-completion");
|
|
|
872 defsymbol (&Qfile_name_all_completions, "file-name-all-completions");
|
|
|
873 defsymbol (&Qfile_attributes, "file-attributes");
|
|
|
874
|
|
|
875 DEFSUBR (Fdirectory_files);
|
|
|
876 DEFSUBR (Ffile_name_completion);
|
|
|
877 DEFSUBR (Ffile_name_all_completions);
|
|
442
|
878 #ifndef WIN32_NATIVE
|
|
428
|
879 DEFSUBR (Fuser_name_completion);
|
|
|
880 DEFSUBR (Fuser_name_completion_1);
|
|
|
881 DEFSUBR (Fuser_name_all_completions);
|
|
|
882 #endif
|
|
|
883 DEFSUBR (Ffile_attributes);
|
|
|
884 }
|
|
|
885
|
|
|
886 void
|
|
|
887 vars_of_dired (void)
|
|
|
888 {
|
|
|
889 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /*
|
|
|
890 *Completion ignores filenames ending in any string in this list.
|
|
|
891 This variable does not affect lists of possible completions,
|
|
|
892 but does affect the commands that actually do completions.
|
|
|
893 It is used by the functions `file-name-completion' and
|
|
|
894 `file-name-all-completions'.
|
|
|
895 */ );
|
|
|
896 Vcompletion_ignored_extensions = Qnil;
|
|
|
897 }
|
