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0
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1 /* Lisp functions for making directory listings.
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2 Copyright (C) 1985, 1986, 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.30. */
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22
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23 #include <config.h>
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24 #include "lisp.h"
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25
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26 #include "buffer.h"
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27 #include "commands.h"
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28 #include "elhash.h"
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29 #include "regex.h"
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195
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30 #include "opaque.h"
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0
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31 #include "sysfile.h"
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32 #include "sysdir.h"
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373
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33 #include "systime.h"
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34 #include "syspwd.h"
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0
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35
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36 Lisp_Object Vcompletion_ignored_extensions;
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37 Lisp_Object Qdirectory_files;
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38 Lisp_Object Qfile_name_completion;
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39 Lisp_Object Qfile_name_all_completions;
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40 Lisp_Object Qfile_attributes;
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41
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195
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42 static Lisp_Object
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209
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43 close_directory_unwind (Lisp_Object unwind_obj)
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195
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44 {
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45 DIR *d = (DIR *)get_opaque_ptr (unwind_obj);
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46 closedir (d);
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47 free_opaque_ptr (unwind_obj);
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48 return Qnil;
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49 }
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50
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20
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51 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /*
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0
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52 Return a list of names of files in DIRECTORY.
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53 There are four optional arguments:
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54 If FULL is non-nil, absolute pathnames of the files are returned.
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55 If MATCH is non-nil, only pathnames containing that regexp are returned.
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56 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
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57 NOSORT is useful if you plan to sort the result yourself.
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185
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58 If FILES-ONLY is the symbol t, then only the "files" in the directory
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0
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59 will be returned; subdirectories will be excluded. If FILES-ONLY is not
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60 nil and not t, then only the subdirectories will be returned. Otherwise,
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61 if FILES-ONLY is nil (the default) then both files and subdirectories will
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62 be returned.
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20
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63 */
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64 (dirname, full, match, nosort, files_only))
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0
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65 {
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267
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66 /* This function can GC */
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0
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67 DIR *d;
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267
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68 Lisp_Object list = Qnil;
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69 Bytecount dirnamelen;
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0
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70 Lisp_Object handler;
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173
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71 struct re_pattern_buffer *bufp = NULL;
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195
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72 int speccount = specpdl_depth ();
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73 char *statbuf, *statbuf_tail;
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0
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74
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267
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75 struct gcpro gcpro1, gcpro2;
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76 GCPRO2 (dirname, list);
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0
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77
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78 /* If the file name has special constructs in it,
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79 call the corresponding file handler. */
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80 handler = Ffind_file_name_handler (dirname, Qdirectory_files);
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81 if (!NILP (handler))
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267
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82 {
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83 UNGCPRO;
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84 if (!NILP (files_only))
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85 return call6 (handler, Qdirectory_files, dirname, full, match, nosort,
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86 files_only);
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87 else
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88 return call5 (handler, Qdirectory_files, dirname, full, match,
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89 nosort);
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90 }
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0
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91
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120
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92 /* #### why do we do Fexpand_file_name after file handlers here,
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93 but earlier everywhere else? */
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0
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94 dirname = Fexpand_file_name (dirname, Qnil);
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267
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95 dirname = Ffile_name_as_directory (dirname);
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96 dirnamelen = XSTRING_LENGTH (dirname);
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0
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97
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267
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98 statbuf = (char *)alloca (dirnamelen + MAXNAMLEN + 1);
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99 memcpy (statbuf, XSTRING_DATA (dirname), dirnamelen);
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100 statbuf_tail = statbuf + dirnamelen;
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0
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101
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102 /* XEmacs: this should come after Ffile_name_as_directory() to avoid
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195
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103 potential regexp cache smashage. It comes before the opendir()
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104 because it might signal an error. */
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0
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105 if (!NILP (match))
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106 {
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107 CHECK_STRING (match);
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108
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109 /* MATCH might be a flawed regular expression. Rather than
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110 catching and signalling our own errors, we just call
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111 compile_pattern to do the work for us. */
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112 bufp = compile_pattern (match, 0, 0, 0, ERROR_ME);
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113 }
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114
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115 /* Now *bufp is the compiled form of MATCH; don't call anything
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116 which might compile a new regexp until we're done with the loop! */
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117
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267
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118 /* Do this opendir after anything which might signal an error.
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119 NOTE: the above comment is old; previosly, there was no
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120 unwind-protection in case of error, but now there is. */
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121 d = opendir ((char *) XSTRING_DATA (dirname));
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122 if (!d)
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0
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123 report_file_error ("Opening directory", list1 (dirname));
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124
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209
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125 record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d));
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195
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126
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0
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127 /* Loop reading blocks */
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128 while (1)
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129 {
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130 DIRENTRY *dp = readdir (d);
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267
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131 Lisp_Object name;
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0
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132 int len;
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133
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267
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134 if (!dp)
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135 break;
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0
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136 len = NAMLEN (dp);
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267
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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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0
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140 {
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267
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141 if (!NILP (files_only))
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0
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142 {
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267
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143 int dir_p;
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144 struct stat st;
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145 char *cur_statbuf = statbuf;
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146 char *cur_statbuf_tail = statbuf_tail;
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147
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148 /* #### I don't think the code under `if' is necessary
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149 anymore. The crashes in this function were reported
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150 because MAXNAMLEN was used to remember the *whole*
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151 statbuf, instead of using MAXPATHLEN. This should be
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276
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152 tested after 21.0 is released. */
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0
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153
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267
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154 /* We normally use the buffer created by alloca.
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155 However, if the file name we get too big, we'll use a
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156 malloced buffer, and free it. It is undefined how
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157 stat() will react to this, but we avoid a buffer
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158 overrun. */
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159 if (len > MAXNAMLEN)
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160 {
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161 cur_statbuf = (char *)xmalloc (dirnamelen + len + 1);
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162 memcpy (cur_statbuf, statbuf, dirnamelen);
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163 cur_statbuf_tail = cur_statbuf + dirnamelen;
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164 }
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165 memcpy (cur_statbuf_tail, dp->d_name, len);
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166 cur_statbuf_tail[len] = 0;
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0
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167
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267
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168 if (stat (cur_statbuf, &st) < 0)
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169 dir_p = 0;
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170 else
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171 dir_p = ((st.st_mode & S_IFMT) == S_IFDIR);
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195
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172
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267
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173 if (cur_statbuf != statbuf)
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174 xfree (cur_statbuf);
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0
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175
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267
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176 if (EQ (files_only, Qt) && dir_p)
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177 continue;
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178 else if (!EQ (files_only, Qt) && !dir_p)
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179 continue;
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180 }
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0
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181
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267
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182 if (!NILP (full))
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183 name = concat2 (dirname, make_ext_string ((Bufbyte *)dp->d_name,
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184 len, FORMAT_FILENAME));
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185 else
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186 name = make_ext_string ((Bufbyte *)dp->d_name,
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187 len, FORMAT_FILENAME);
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188
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189 list = Fcons (name, list);
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0
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190 }
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191 }
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195
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192 unbind_to (speccount, Qnil); /* This will close the dir */
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267
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193
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0
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194 if (!NILP (nosort))
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195
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195 RETURN_UNGCPRO (list);
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196 else
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197 RETURN_UNGCPRO (Fsort (Fnreverse (list), Qstring_lessp));
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0
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198 }
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199
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185
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200 static Lisp_Object file_name_completion (Lisp_Object file,
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201 Lisp_Object dirname,
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0
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202 int all_flag, int ver_flag);
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203
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20
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204 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
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0
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205 Complete file name FILE in directory DIR.
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206 Returns the longest string common to all filenames in DIR
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207 that start with FILE.
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208 If there is only one and FILE matches it exactly, returns t.
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209 Returns nil if DIR contains no name starting with FILE.
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210
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211 Filenames which end with any member of `completion-ignored-extensions'
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212 are not considered as possible completions for FILE unless there is no
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213 other possible completion. `completion-ignored-extensions' is not applied
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214 to the names of directories.
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20
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215 */
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216 (file, dirname))
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0
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217 {
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120
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218 /* This function can GC. GC checked 1996.04.06. */
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0
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219 Lisp_Object handler;
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220
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221 /* If the directory name has special constructs in it,
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222 call the corresponding file handler. */
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223 handler = Ffind_file_name_handler (dirname, Qfile_name_completion);
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224 if (!NILP (handler))
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225 return call3 (handler, Qfile_name_completion, file, dirname);
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226
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227 /* If the file name has special constructs in it,
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228 call the corresponding file handler. */
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229 handler = Ffind_file_name_handler (file, Qfile_name_completion);
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230 if (!NILP (handler))
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231 return call3 (handler, Qfile_name_completion, file, dirname);
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232
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233 return file_name_completion (file, dirname, 0, 0);
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234 }
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235
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20
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236 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
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0
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237 Return a list of all completions of file name FILE in directory DIR.
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238 These are all file names in directory DIR which begin with FILE.
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239
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240 Filenames which end with any member of `completion-ignored-extensions'
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241 are not considered as possible completions for FILE unless there is no
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242 other possible completion. `completion-ignored-extensions' is not applied
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243 to the names of directories.
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20
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244 */
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245 (file, dirname))
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0
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246 {
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120
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247 /* This function can GC. GC checked 1997.06.04. */
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0
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248 Lisp_Object handler;
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118
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249 struct gcpro gcpro1;
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0
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250
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118
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251 GCPRO1 (dirname);
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252 dirname = Fexpand_file_name (dirname, Qnil);
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0
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253 /* If the file name has special constructs in it,
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254 call the corresponding file handler. */
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255 handler = Ffind_file_name_handler (dirname, Qfile_name_all_completions);
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118
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256 UNGCPRO;
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0
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257 if (!NILP (handler))
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258 return call3 (handler, Qfile_name_all_completions, file,
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259 dirname);
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260
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261 return file_name_completion (file, dirname, 1, 0);
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262 }
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263
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264 static int
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265 file_name_completion_stat (Lisp_Object dirname, DIRENTRY *dp,
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266 struct stat *st_addr)
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267 {
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268 Bytecount len = NAMLEN (dp);
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14
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269 Bytecount pos = XSTRING_LENGTH (dirname);
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0
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270 int value;
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271 char *fullname = (char *) alloca (len + pos + 2);
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272
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14
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273 memcpy (fullname, XSTRING_DATA (dirname), pos);
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0
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274 if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
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275 fullname[pos++] = DIRECTORY_SEP;
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276
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277 memcpy (fullname + pos, dp->d_name, len);
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278 fullname[pos + len] = 0;
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279
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280 #ifdef S_IFLNK
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281 /* We want to return success if a link points to a nonexistent file,
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282 but we want to return the status for what the link points to,
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283 in case it is a directory. */
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284 value = lstat (fullname, st_addr);
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285 if (S_ISLNK (st_addr->st_mode))
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286 stat (fullname, st_addr);
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287 #else
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288 value = stat (fullname, st_addr);
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289 #endif
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173
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290 return value;
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0
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291 }
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292
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293 static Lisp_Object
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267
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294 file_name_completion_unwind (Lisp_Object locative)
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219
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295 {
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296 DIR *d;
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267
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297 Lisp_Object obj = XCAR (locative);
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|
219
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298
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373
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299 if (!NILP (obj))
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300 {
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301 d = (DIR *)get_opaque_ptr (obj);
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302 closedir (d);
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303 free_opaque_ptr (obj);
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304 }
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|
267
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305 free_cons (XCONS (locative));
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219
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306 return Qnil;
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|
|
307 }
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308
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309 static Lisp_Object
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0
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310 file_name_completion (Lisp_Object file, Lisp_Object dirname, int all_flag,
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311 int ver_flag)
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312 {
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313 /* This function can GC */
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314 DIR *d = 0;
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315 int matchcount = 0;
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316 Lisp_Object bestmatch = Qnil;
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317 Charcount bestmatchsize = 0;
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318 struct stat st;
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319 int passcount;
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|
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320 int speccount = specpdl_depth ();
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|
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321 Charcount file_name_length;
|
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267
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322 Lisp_Object locative;
|
|
0
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323 struct gcpro gcpro1, gcpro2, gcpro3;
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324
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|
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325 GCPRO3 (file, dirname, bestmatch);
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|
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326
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|
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327 CHECK_STRING (file);
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328
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219
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329 #ifdef WINDOWSNT
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|
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330 /* Filename completion on Windows ignores case, since Windows
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|
|
331 filesystems do. */
|
|
0
|
332 specbind (Qcompletion_ignore_case, Qt);
|
|
267
|
333 #endif /* WINDOWSNT */
|
|
0
|
334
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|
|
335 #ifdef FILE_SYSTEM_CASE
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|
|
336 file = FILE_SYSTEM_CASE (file);
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|
|
337 #endif
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|
338 dirname = Fexpand_file_name (dirname, Qnil);
|
|
272
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339 file_name_length = XSTRING_CHAR_LENGTH (file);
|
|
0
|
340
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|
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341 /* With passcount = 0, ignore files that end in an ignored extension.
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|
342 If nothing found then try again with passcount = 1, don't ignore them.
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|
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343 If looking for all completions, start with passcount = 1,
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344 so always take even the ignored ones.
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345
|
|
|
346 ** It would not actually be helpful to the user to ignore any possible
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|
|
347 completions when making a list of them.** */
|
|
|
348
|
|
219
|
349 /* We cannot use close_directory_unwind() because we change the
|
|
|
350 directory. The old code used to just avoid signaling errors, and
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|
|
351 call closedir, but it was wrong, because it made sane handling of
|
|
|
352 QUIT impossible and, besides, various utility functions like
|
|
|
353 regexp_ignore_completion_p can signal errors. */
|
|
267
|
354 locative = noseeum_cons (Qnil, Qnil);
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|
|
355 record_unwind_protect (file_name_completion_unwind, locative);
|
|
219
|
356
|
|
0
|
357 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
|
|
|
358 {
|
|
16
|
359 d = opendir ((char *) XSTRING_DATA (Fdirectory_file_name (dirname)));
|
|
0
|
360 if (!d)
|
|
|
361 report_file_error ("Opening directory", list1 (dirname));
|
|
267
|
362 XCAR (locative) = make_opaque_ptr ((void *)d);
|
|
0
|
363
|
|
|
364 /* Loop reading blocks */
|
|
|
365 while (1)
|
|
|
366 {
|
|
|
367 DIRENTRY *dp;
|
|
|
368 Bytecount len;
|
|
|
369 /* scmp() works in characters, not bytes, so we have to compute
|
|
|
370 this value: */
|
|
|
371 Charcount cclen;
|
|
|
372 int directoryp;
|
|
|
373 int ignored_extension_p = 0;
|
|
|
374 Bufbyte *d_name;
|
|
|
375
|
|
267
|
376 dp = readdir (d);
|
|
0
|
377 if (!dp) break;
|
|
|
378
|
|
377
|
379 /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
|
|
0
|
380 d_name = (Bufbyte *) dp->d_name;
|
|
|
381 len = NAMLEN (dp);
|
|
2
|
382 cclen = bytecount_to_charcount (d_name, len);
|
|
0
|
383
|
|
219
|
384 QUIT;
|
|
0
|
385
|
|
|
386 if (! DIRENTRY_NONEMPTY (dp)
|
|
|
387 || cclen < file_name_length
|
|
14
|
388 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
|
|
0
|
389 continue;
|
|
|
390
|
|
|
391 if (file_name_completion_stat (dirname, dp, &st) < 0)
|
|
|
392 continue;
|
|
|
393
|
|
|
394 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
395 if (directoryp)
|
|
|
396 {
|
|
|
397 #ifndef TRIVIAL_DIRECTORY_ENTRY
|
|
|
398 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
|
|
|
399 #endif
|
|
|
400 /* "." and ".." are never interesting as completions, but are
|
|
2
|
401 actually in the way in a directory containing only one file. */
|
|
0
|
402 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
|
|
|
403 continue;
|
|
|
404 }
|
|
|
405 else
|
|
|
406 {
|
|
|
407 /* Compare extensions-to-be-ignored against end of this file name */
|
|
2
|
408 /* if name is not an exact match against specified string. */
|
|
0
|
409 if (!passcount && cclen > file_name_length)
|
|
|
410 {
|
|
|
411 Lisp_Object tem;
|
|
|
412 /* and exit this for loop if a match is found */
|
|
219
|
413 EXTERNAL_LIST_LOOP (tem, Vcompletion_ignored_extensions)
|
|
0
|
414 {
|
|
|
415 Lisp_Object elt = XCAR (tem);
|
|
|
416 Charcount skip;
|
|
|
417
|
|
219
|
418 CHECK_STRING (elt);
|
|
|
419
|
|
272
|
420 skip = cclen - XSTRING_CHAR_LENGTH (elt);
|
|
0
|
421 if (skip < 0) continue;
|
|
|
422
|
|
|
423 if (0 > scmp (charptr_n_addr (d_name, skip),
|
|
14
|
424 XSTRING_DATA (elt),
|
|
272
|
425 XSTRING_CHAR_LENGTH (elt)))
|
|
0
|
426 {
|
|
|
427 ignored_extension_p = 1;
|
|
|
428 break;
|
|
|
429 }
|
|
|
430 }
|
|
|
431 }
|
|
|
432 }
|
|
|
433
|
|
|
434 /* If an ignored-extensions match was found,
|
|
|
435 don't process this name as a completion. */
|
|
|
436 if (!passcount && ignored_extension_p)
|
|
|
437 continue;
|
|
|
438
|
|
2
|
439 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, cclen))
|
|
0
|
440 continue;
|
|
|
441
|
|
|
442 /* Update computation of how much all possible completions match */
|
|
|
443 matchcount++;
|
|
|
444
|
|
|
445 if (all_flag || NILP (bestmatch))
|
|
|
446 {
|
|
|
447 Lisp_Object name = Qnil;
|
|
|
448 struct gcpro ngcpro1;
|
|
|
449 NGCPRO1 (name);
|
|
|
450 /* This is a possible completion */
|
|
2
|
451 name = make_string (d_name, len);
|
|
|
452 if (directoryp) /* Completion is a directory; end it with '/' */
|
|
|
453 name = Ffile_name_as_directory (name);
|
|
0
|
454 if (all_flag)
|
|
|
455 {
|
|
|
456 bestmatch = Fcons (name, bestmatch);
|
|
|
457 }
|
|
|
458 else
|
|
|
459 {
|
|
|
460 bestmatch = name;
|
|
272
|
461 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
0
|
462 }
|
|
|
463 NUNGCPRO;
|
|
|
464 }
|
|
|
465 else
|
|
|
466 {
|
|
|
467 Charcount compare = min (bestmatchsize, cclen);
|
|
14
|
468 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
0
|
469 Bufbyte *p2 = d_name;
|
|
|
470 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
471
|
|
|
472 if (matchsize < 0)
|
|
|
473 matchsize = compare;
|
|
|
474 if (completion_ignore_case)
|
|
|
475 {
|
|
|
476 /* If this is an exact match except for case,
|
|
|
477 use it as the best match rather than one that is not
|
|
|
478 an exact match. This way, we get the case pattern
|
|
|
479 of the actual match. */
|
|
2
|
480 if ((matchsize == cclen
|
|
185
|
481 && matchsize + !!directoryp
|
|
272
|
482 < XSTRING_CHAR_LENGTH (bestmatch))
|
|
0
|
483 ||
|
|
|
484 /* If there is no exact match ignoring case,
|
|
|
485 prefer a match that does not change the case
|
|
|
486 of the input. */
|
|
2
|
487 (((matchsize == cclen)
|
|
0
|
488 ==
|
|
185
|
489 (matchsize + !!directoryp
|
|
272
|
490 == XSTRING_CHAR_LENGTH (bestmatch)))
|
|
0
|
491 /* If there is more than one exact match aside from
|
|
|
492 case, and one of them is exact including case,
|
|
|
493 prefer that one. */
|
|
14
|
494 && 0 > scmp_1 (p2, XSTRING_DATA (file),
|
|
0
|
495 file_name_length, 0)
|
|
14
|
496 && 0 <= scmp_1 (p1, XSTRING_DATA (file),
|
|
0
|
497 file_name_length, 0)))
|
|
|
498 {
|
|
2
|
499 bestmatch = make_string (d_name, len);
|
|
0
|
500 if (directoryp)
|
|
2
|
501 bestmatch = Ffile_name_as_directory (bestmatch);
|
|
0
|
502 }
|
|
|
503 }
|
|
|
504
|
|
|
505 /* If this dirname all matches,
|
|
|
506 see if implicit following slash does too. */
|
|
|
507 if (directoryp
|
|
|
508 && compare == matchsize
|
|
|
509 && bestmatchsize > matchsize
|
|
|
510 && IS_ANY_SEP (charptr_emchar_n (p1, matchsize)))
|
|
|
511 matchsize++;
|
|
|
512 bestmatchsize = matchsize;
|
|
|
513 }
|
|
|
514 }
|
|
|
515 closedir (d);
|
|
267
|
516 free_opaque_ptr (XCAR (locative));
|
|
|
517 XCAR (locative) = Qnil;
|
|
0
|
518 }
|
|
|
519
|
|
|
520 unbind_to (speccount, Qnil);
|
|
|
521
|
|
|
522 UNGCPRO;
|
|
|
523
|
|
|
524 if (all_flag || NILP (bestmatch))
|
|
|
525 return bestmatch;
|
|
|
526 if (matchcount == 1 && bestmatchsize == file_name_length)
|
|
|
527 return Qt;
|
|
227
|
528 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
0
|
529 }
|
|
|
530
|
|
|
531
|
|
377
|
532
|
|
|
533 /* The *pwent() functions do not exist on NT */
|
|
|
534 #ifndef WINDOWSNT
|
|
|
535
|
|
373
|
536 static Lisp_Object user_name_completion (Lisp_Object user,
|
|
|
537 int all_flag,
|
|
|
538 int *uniq);
|
|
|
539
|
|
|
540 DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /*
|
|
|
541 Complete user name USER.
|
|
|
542
|
|
|
543 Returns the longest string common to all user names that start
|
|
|
544 with USER. If there is only one and USER matches it exactly,
|
|
|
545 returns t. Returns nil if there is no user name starting with USER.
|
|
|
546 */
|
|
|
547 (user))
|
|
|
548 {
|
|
|
549 return user_name_completion (user, 0, NULL);
|
|
|
550 }
|
|
|
551
|
|
|
552 DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /*
|
|
|
553 Complete user name USER.
|
|
|
554
|
|
|
555 This function is identical to `user-name-completion', except that
|
|
|
556 the cons of the completion and an indication of whether the
|
|
|
557 completion was unique is returned.
|
|
|
558
|
|
|
559 The car of the returned value is the longest string common to all
|
|
|
560 user names that start with USER. If there is only one and USER
|
|
|
561 matches it exactly, the car is t. The car is nil if there is no
|
|
|
562 user name starting with USER. The cdr of the result is non-nil
|
|
|
563 if and only if the completion returned in the car was unique.
|
|
|
564 */
|
|
|
565 (user))
|
|
|
566 {
|
|
|
567 int uniq;
|
|
|
568 Lisp_Object completed;
|
|
|
569
|
|
|
570 completed = user_name_completion (user, 0, &uniq);
|
|
|
571 return Fcons (completed, uniq ? Qt : Qnil);
|
|
|
572 }
|
|
|
573
|
|
|
574 DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /*
|
|
|
575 Return a list of all completions of user name USER.
|
|
|
576 These are all user names which begin with USER.
|
|
|
577 */
|
|
|
578 (user))
|
|
|
579 {
|
|
|
580 return user_name_completion (user, 1, NULL);
|
|
|
581 }
|
|
|
582
|
|
|
583 static Lisp_Object
|
|
|
584 user_name_completion_unwind (Lisp_Object locative)
|
|
|
585 {
|
|
|
586 Lisp_Object obj1 = XCAR (locative);
|
|
|
587 Lisp_Object obj2 = XCDR (locative);
|
|
|
588 char **cache;
|
|
|
589 int clen, i;
|
|
|
590
|
|
|
591
|
|
|
592 if (!NILP (obj1) && !NILP (obj2))
|
|
|
593 {
|
|
|
594 /* clean up if interrupted building cache */
|
|
|
595 cache = *(char ***)get_opaque_ptr (obj1);
|
|
|
596 clen = *(int *)get_opaque_ptr (obj2);
|
|
|
597 free_opaque_ptr (obj1);
|
|
|
598 free_opaque_ptr (obj2);
|
|
|
599 for (i = 0; i < clen; i++)
|
|
|
600 free (cache[i]);
|
|
|
601 free (cache);
|
|
|
602 }
|
|
|
603
|
|
|
604 free_cons (XCONS (locative));
|
|
|
605 endpwent ();
|
|
|
606
|
|
|
607 return Qnil;
|
|
|
608 }
|
|
|
609
|
|
|
610 static char **user_cache;
|
|
|
611 static int user_cache_len;
|
|
|
612 static int user_cache_max;
|
|
|
613 static long user_cache_time;
|
|
|
614
|
|
|
615 #define USER_CACHE_REBUILD (24*60*60) /* 1 day, in seconds */
|
|
|
616
|
|
|
617 static Lisp_Object
|
|
|
618 user_name_completion (Lisp_Object user, int all_flag, int *uniq)
|
|
|
619 {
|
|
|
620 /* This function can GC */
|
|
|
621 struct passwd *pw;
|
|
|
622 int matchcount = 0;
|
|
|
623 Lisp_Object bestmatch = Qnil;
|
|
|
624 Charcount bestmatchsize = 0;
|
|
|
625 int speccount = specpdl_depth ();
|
|
|
626 int i, cmax, clen;
|
|
|
627 char **cache;
|
|
|
628 Charcount user_name_length;
|
|
|
629 Lisp_Object locative;
|
|
|
630 EMACS_TIME t;
|
|
|
631 struct gcpro gcpro1, gcpro2;
|
|
|
632
|
|
|
633 GCPRO2 (user, bestmatch);
|
|
|
634
|
|
|
635 CHECK_STRING (user);
|
|
|
636
|
|
|
637 user_name_length = XSTRING_CHAR_LENGTH (user);
|
|
|
638
|
|
|
639 /* Cache user name lookups because it tends to be quite slow.
|
|
|
640 * Rebuild the cache occasionally to catch changes */
|
|
|
641 EMACS_GET_TIME (t);
|
|
|
642 if (user_cache &&
|
|
|
643 EMACS_SECS (t) - user_cache_time > USER_CACHE_REBUILD)
|
|
|
644 {
|
|
|
645 for (i = 0; i < user_cache_len; i++)
|
|
|
646 free (user_cache[i]);
|
|
|
647 free (user_cache);
|
|
|
648 user_cache = NULL;
|
|
|
649 user_cache_len = 0;
|
|
|
650 user_cache_max = 0;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (user_cache == NULL || user_cache_max <= 0)
|
|
|
654 {
|
|
|
655 cmax = 200;
|
|
|
656 clen = 0;
|
|
|
657 cache = (char **) malloc (cmax*sizeof (char *));
|
|
|
658
|
|
|
659 setpwent ();
|
|
|
660 locative = noseeum_cons (Qnil, Qnil);
|
|
|
661 XCAR (locative) = make_opaque_ptr ((void *) &cache);
|
|
|
662 XCDR (locative) = make_opaque_ptr ((void *) &clen);
|
|
|
663 record_unwind_protect (user_name_completion_unwind, locative);
|
|
|
664 /* #### may need to slow down interrupts around call to getpwent
|
|
|
665 * below. at least the call to getpwnam in Fuser_full_name
|
|
|
666 * is documented as needing it on irix. */
|
|
|
667 while ((pw = getpwent ()))
|
|
|
668 {
|
|
|
669 if (clen >= cmax)
|
|
|
670 {
|
|
|
671 cmax *= 2;
|
|
|
672 cache = (char **) realloc (cache, cmax*sizeof (char *));
|
|
|
673 }
|
|
|
674
|
|
|
675 QUIT;
|
|
|
676
|
|
|
677 cache[clen++] = strdup (pw->pw_name);
|
|
|
678 }
|
|
|
679 free_opaque_ptr (XCAR (locative));
|
|
|
680 free_opaque_ptr (XCDR (locative));
|
|
|
681 XCAR (locative) = Qnil;
|
|
|
682 XCDR (locative) = Qnil;
|
|
|
683
|
|
|
684 unbind_to (speccount, Qnil); /* free locative cons, endpwent() */
|
|
|
685
|
|
|
686 user_cache_max = cmax;
|
|
|
687 user_cache_len = clen;
|
|
|
688 user_cache = cache;
|
|
|
689 user_cache_time = EMACS_SECS (t);
|
|
|
690 }
|
|
|
691
|
|
|
692 for (i = 0; i < user_cache_len; i++)
|
|
|
693 {
|
|
|
694 Bytecount len;
|
|
|
695 /* scmp() works in chars, not bytes, so we have to compute this: */
|
|
|
696 Charcount cclen;
|
|
|
697 Bufbyte *d_name;
|
|
|
698
|
|
|
699 d_name = (Bufbyte *) user_cache[i];
|
|
|
700 len = strlen (d_name);
|
|
|
701 cclen = bytecount_to_charcount (d_name, len);
|
|
|
702
|
|
|
703 QUIT;
|
|
|
704
|
|
|
705 if (cclen < user_name_length ||
|
|
|
706 0 <= scmp (d_name, XSTRING_DATA (user), user_name_length))
|
|
|
707 continue;
|
|
|
708
|
|
|
709 matchcount++; /* count matching completions */
|
|
|
710
|
|
|
711 if (all_flag || NILP (bestmatch))
|
|
|
712 {
|
|
|
713 Lisp_Object name = Qnil;
|
|
|
714 struct gcpro ngcpro1;
|
|
|
715 NGCPRO1 (name);
|
|
|
716 /* This is a possible completion */
|
|
|
717 name = make_string (d_name, len);
|
|
|
718 if (all_flag)
|
|
|
719 {
|
|
|
720 bestmatch = Fcons (name, bestmatch);
|
|
|
721 }
|
|
|
722 else
|
|
|
723 {
|
|
|
724 bestmatch = name;
|
|
|
725 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
726 }
|
|
|
727 NUNGCPRO;
|
|
|
728 }
|
|
|
729 else
|
|
|
730 {
|
|
|
731 Charcount compare = min (bestmatchsize, cclen);
|
|
|
732 Bufbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
733 Bufbyte *p2 = d_name;
|
|
|
734 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
735
|
|
|
736 if (matchsize < 0)
|
|
|
737 matchsize = compare;
|
|
|
738 if (completion_ignore_case)
|
|
|
739 {
|
|
|
740 /* If this is an exact match except for case,
|
|
|
741 use it as the best match rather than one that is not
|
|
|
742 an exact match. This way, we get the case pattern
|
|
|
743 of the actual match. */
|
|
|
744 if ((matchsize == cclen
|
|
|
745 && matchsize < XSTRING_CHAR_LENGTH (bestmatch))
|
|
|
746 ||
|
|
|
747 /* If there is no exact match ignoring case,
|
|
|
748 prefer a match that does not change the case
|
|
|
749 of the input. */
|
|
|
750 (((matchsize == cclen)
|
|
|
751 ==
|
|
|
752 (matchsize == XSTRING_CHAR_LENGTH (bestmatch)))
|
|
|
753 /* If there is more than one exact match aside from
|
|
|
754 case, and one of them is exact including case,
|
|
|
755 prefer that one. */
|
|
|
756 && 0 > scmp_1 (p2, XSTRING_DATA (user),
|
|
|
757 user_name_length, 0)
|
|
|
758 && 0 <= scmp_1 (p1, XSTRING_DATA (user),
|
|
|
759 user_name_length, 0)))
|
|
|
760 {
|
|
|
761 bestmatch = make_string (d_name, len);
|
|
|
762 }
|
|
|
763 }
|
|
|
764
|
|
|
765 bestmatchsize = matchsize;
|
|
|
766 }
|
|
|
767 }
|
|
|
768
|
|
|
769 UNGCPRO;
|
|
|
770
|
|
|
771 if (uniq)
|
|
|
772 *uniq = (matchcount == 1);
|
|
|
773
|
|
|
774 if (all_flag || NILP (bestmatch))
|
|
|
775 return bestmatch;
|
|
|
776 if (matchcount == 1 && bestmatchsize == user_name_length)
|
|
|
777 return Qt;
|
|
|
778 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
779 }
|
|
377
|
780 #endif /* ! defined WINDOWSNT */
|
|
373
|
781
|
|
|
782
|
|
0
|
783 Lisp_Object
|
|
280
|
784 make_directory_hash_table (CONST char *path)
|
|
0
|
785 {
|
|
|
786 DIR *d;
|
|
|
787 Lisp_Object hash = make_lisp_hashtable (100, HASHTABLE_NONWEAK,
|
|
|
788 HASHTABLE_EQUAL);
|
|
|
789 if ((d = opendir (path)))
|
|
|
790 {
|
|
280
|
791 DIRENTRY *dp;
|
|
|
792
|
|
0
|
793 while ((dp = readdir (d)))
|
|
|
794 {
|
|
280
|
795 Bytecount len = NAMLEN (dp);
|
|
0
|
796 if (DIRENTRY_NONEMPTY (dp))
|
|
377
|
797 /* Cast to Bufbyte* is OK, as readdir() Mule-encapsulates. */
|
|
|
798 Fputhash (make_string ((Bufbyte *) dp->d_name, len), Qt, hash);
|
|
0
|
799 }
|
|
|
800 closedir (d);
|
|
|
801 }
|
|
|
802 return hash;
|
|
|
803 }
|
|
|
804
|
|
|
805 Lisp_Object
|
|
|
806 wasteful_word_to_lisp (unsigned int item)
|
|
|
807 {
|
|
|
808 /* Compatibility: in other versions, file-attributes returns a LIST
|
|
|
809 of two 16 bit integers... */
|
|
|
810 Lisp_Object cons = word_to_lisp (item);
|
|
|
811 XCDR (cons) = Fcons (XCDR (cons), Qnil);
|
|
|
812 return cons;
|
|
|
813 }
|
|
|
814
|
|
20
|
815 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 0, /*
|
|
0
|
816 Return a list of attributes of file FILENAME.
|
|
|
817 Value is nil if specified file cannot be opened.
|
|
|
818 Otherwise, list elements are:
|
|
|
819 0. t for directory, string (name linked to) for symbolic link, or nil.
|
|
|
820 1. Number of links to file.
|
|
|
821 2. File uid.
|
|
|
822 3. File gid.
|
|
|
823 4. Last access time, as a list of two integers.
|
|
|
824 First integer has high-order 16 bits of time, second has low 16 bits.
|
|
|
825 5. Last modification time, likewise.
|
|
|
826 6. Last status change time, likewise.
|
|
|
827 7. Size in bytes. (-1, if number is out of range).
|
|
|
828 8. File modes, as a string of ten letters or dashes as in ls -l.
|
|
|
829 9. t iff file's gid would change if file were deleted and recreated.
|
|
|
830 10. inode number.
|
|
|
831 11. Device number.
|
|
|
832
|
|
|
833 If file does not exist, returns nil.
|
|
20
|
834 */
|
|
|
835 (filename))
|
|
0
|
836 {
|
|
120
|
837 /* This function can GC. GC checked 1997.06.04. */
|
|
0
|
838 Lisp_Object values[12];
|
|
|
839 Lisp_Object dirname = Qnil;
|
|
|
840 struct stat s;
|
|
|
841 char modes[10];
|
|
|
842 Lisp_Object handler;
|
|
|
843 struct gcpro gcpro1, gcpro2;
|
|
|
844
|
|
120
|
845 GCPRO2 (filename, dirname);
|
|
0
|
846 filename = Fexpand_file_name (filename, Qnil);
|
|
|
847
|
|
|
848 /* If the file name has special constructs in it,
|
|
|
849 call the corresponding file handler. */
|
|
|
850 handler = Ffind_file_name_handler (filename, Qfile_attributes);
|
|
|
851 if (!NILP (handler))
|
|
120
|
852 {
|
|
|
853 UNGCPRO;
|
|
|
854 return call2 (handler, Qfile_attributes, filename);
|
|
|
855 }
|
|
0
|
856
|
|
14
|
857 if (lstat ((char *) XSTRING_DATA (filename), &s) < 0)
|
|
120
|
858 {
|
|
|
859 UNGCPRO;
|
|
|
860 return Qnil;
|
|
|
861 }
|
|
0
|
862
|
|
|
863 #ifdef BSD4_2
|
|
|
864 dirname = Ffile_name_directory (filename);
|
|
|
865 #endif
|
|
|
866
|
|
|
867 #ifdef MSDOS
|
|
|
868 {
|
|
14
|
869 char *tmpnam = (char *) XSTRING_DATA (Ffile_name_nondirectory (filename));
|
|
0
|
870 int l = strlen (tmpnam);
|
|
|
871
|
|
185
|
872 if (l >= 5
|
|
0
|
873 && S_ISREG (s.st_mode)
|
|
14
|
874 && (stricmp (&tmpnam[l - 4], ".com") == 0 ||
|
|
|
875 stricmp (&tmpnam[l - 4], ".exe") == 0 ||
|
|
|
876 stricmp (&tmpnam[l - 4], ".bat") == 0))
|
|
0
|
877 {
|
|
|
878 s.st_mode |= S_IEXEC;
|
|
|
879 }
|
|
|
880 }
|
|
|
881 #endif /* MSDOS */
|
|
|
882
|
|
|
883 switch (s.st_mode & S_IFMT)
|
|
|
884 {
|
|
|
885 default:
|
|
|
886 values[0] = Qnil;
|
|
|
887 break;
|
|
|
888 case S_IFDIR:
|
|
|
889 values[0] = Qt;
|
|
|
890 break;
|
|
|
891 #ifdef S_IFLNK
|
|
|
892 case S_IFLNK:
|
|
|
893 values[0] = Ffile_symlink_p (filename);
|
|
|
894 break;
|
|
|
895 #endif
|
|
|
896 }
|
|
|
897 values[1] = make_int (s.st_nlink);
|
|
|
898 values[2] = make_int (s.st_uid);
|
|
|
899 values[3] = make_int (s.st_gid);
|
|
|
900 values[4] = wasteful_word_to_lisp (s.st_atime);
|
|
|
901 values[5] = wasteful_word_to_lisp (s.st_mtime);
|
|
|
902 values[6] = wasteful_word_to_lisp (s.st_ctime);
|
|
|
903 values[7] = make_int ((EMACS_INT) s.st_size);
|
|
|
904 /* If the size is out of range, give back -1. */
|
|
|
905 /* #### Fix when Emacs gets bignums! */
|
|
|
906 if (XINT (values[7]) != s.st_size)
|
|
272
|
907 values[7] = make_int (-1);
|
|
0
|
908 filemodestring (&s, modes);
|
|
|
909 values[8] = make_string ((Bufbyte *) modes, 10);
|
|
|
910 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
|
|
|
911 {
|
|
|
912 struct stat sdir;
|
|
|
913
|
|
14
|
914 if (!NILP (dirname) && stat ((char *) XSTRING_DATA (dirname), &sdir) == 0)
|
|
0
|
915 values[9] = (sdir.st_gid != s.st_gid) ? Qt : Qnil;
|
|
|
916 else /* if we can't tell, assume worst */
|
|
|
917 values[9] = Qt;
|
|
|
918 }
|
|
|
919 #else /* file gid will be egid */
|
|
|
920 values[9] = (s.st_gid != getegid ()) ? Qt : Qnil;
|
|
|
921 #endif /* BSD4_2 or BSD4_3 */
|
|
|
922 values[10] = make_int (s.st_ino);
|
|
|
923 values[11] = make_int (s.st_dev);
|
|
|
924 UNGCPRO;
|
|
|
925 return Flist (countof (values), values);
|
|
|
926 }
|
|
|
927
|
|
|
928
|
|
|
929 /************************************************************************/
|
|
|
930 /* initialization */
|
|
|
931 /************************************************************************/
|
|
|
932
|
|
|
933 void
|
|
|
934 syms_of_dired (void)
|
|
|
935 {
|
|
|
936 defsymbol (&Qdirectory_files, "directory-files");
|
|
|
937 defsymbol (&Qfile_name_completion, "file-name-completion");
|
|
|
938 defsymbol (&Qfile_name_all_completions, "file-name-all-completions");
|
|
|
939 defsymbol (&Qfile_attributes, "file-attributes");
|
|
|
940
|
|
20
|
941 DEFSUBR (Fdirectory_files);
|
|
|
942 DEFSUBR (Ffile_name_completion);
|
|
|
943 DEFSUBR (Ffile_name_all_completions);
|
|
377
|
944 #ifndef WINDOWSNT
|
|
373
|
945 DEFSUBR (Fuser_name_completion);
|
|
|
946 DEFSUBR (Fuser_name_completion_1);
|
|
|
947 DEFSUBR (Fuser_name_all_completions);
|
|
377
|
948 #endif
|
|
20
|
949 DEFSUBR (Ffile_attributes);
|
|
0
|
950 }
|
|
|
951
|
|
|
952 void
|
|
|
953 vars_of_dired (void)
|
|
|
954 {
|
|
|
955 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /*
|
|
|
956 *Completion ignores filenames ending in any string in this list.
|
|
|
957 This variable does not affect lists of possible completions,
|
|
|
958 but does affect the commands that actually do completions.
|
|
|
959 It is used by the functions `file-name-completion' and
|
|
|
960 `file-name-all-completions'.
|
|
|
961 */ );
|
|
|
962 Vcompletion_ignored_extensions = Qnil;
|
|
373
|
963
|
|
|
964 user_cache = NULL;
|
|
|
965 user_cache_len = 0;
|
|
|
966 user_cache_max = 0;
|
|
0
|
967 }
|
