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428
|
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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771
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3 Copyright (C) 2001 Ben Wing.
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428
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4
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|
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5 This file is part of XEmacs.
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|
6
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7 XEmacs is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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|
9 Free Software Foundation; either version 2, or (at your option) any
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|
10 later version.
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11
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12 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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|
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: FSF 19.30. */
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23
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24 #include <config.h>
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25 #include "lisp.h"
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26
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442
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27 #include "sysfile.h"
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28 #include "sysdir.h"
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29 #include "systime.h"
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30 #include "sysdep.h"
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31 #include "syspwd.h"
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428
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32 #include "buffer.h"
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33 #include "commands.h"
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34 #include "elhash.h"
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|
35 #include "regex.h"
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36 #include "opaque.h"
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460
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37 #include "syntax.h"
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428
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38
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528
|
39 #ifdef WIN32_NATIVE
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|
|
40 #include "syswindows.h"
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|
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41 #endif
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42
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428
|
43 Lisp_Object Vcompletion_ignored_extensions;
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|
44 Lisp_Object Qdirectory_files;
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45 Lisp_Object Qfile_name_completion;
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46 Lisp_Object Qfile_name_all_completions;
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47 Lisp_Object Qfile_attributes;
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48
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49 static Lisp_Object
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50 close_directory_unwind (Lisp_Object unwind_obj)
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51 {
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52 DIR *d = (DIR *)get_opaque_ptr (unwind_obj);
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771
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53 qxe_closedir (d);
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428
|
54 free_opaque_ptr (unwind_obj);
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55 return Qnil;
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|
|
56 }
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57
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58 DEFUN ("directory-files", Fdirectory_files, 1, 5, 0, /*
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59 Return a list of names of files in DIRECTORY.
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60 There are four optional arguments:
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61 If FULL is non-nil, absolute pathnames of the files are returned.
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62 If MATCH is non-nil, only pathnames containing that regexp are returned.
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63 If NOSORT is non-nil, the list is not sorted--its order is unpredictable.
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64 NOSORT is useful if you plan to sort the result yourself.
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65 If FILES-ONLY is the symbol t, then only the "files" in the directory
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66 will be returned; subdirectories will be excluded. If FILES-ONLY is not
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67 nil and not t, then only the subdirectories will be returned. Otherwise,
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68 if FILES-ONLY is nil (the default) then both files and subdirectories will
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69 be returned.
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|
70 */
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71 (directory, full, match, nosort, files_only))
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72 {
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73 /* This function can GC */
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74 DIR *d;
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|
75 Lisp_Object list = Qnil;
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76 Bytecount directorylen;
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77 Lisp_Object handler;
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78 struct re_pattern_buffer *bufp = NULL;
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79 int speccount = specpdl_depth ();
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|
771
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80 Intbyte *statbuf, *statbuf_tail;
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428
|
81
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|
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82 struct gcpro gcpro1, gcpro2;
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83 GCPRO2 (directory, list);
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84
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85 /* If the file name has special constructs in it,
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86 call the corresponding file handler. */
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87 handler = Ffind_file_name_handler (directory, Qdirectory_files);
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|
|
88 if (!NILP (handler))
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|
89 {
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90 UNGCPRO;
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91 if (!NILP (files_only))
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92 return call6 (handler, Qdirectory_files, directory, full, match,
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93 nosort, files_only);
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94 else
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95 return call5 (handler, Qdirectory_files, directory, full, match,
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96 nosort);
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|
|
97 }
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98
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|
99 /* #### why do we do Fexpand_file_name after file handlers here,
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|
100 but earlier everywhere else? */
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101 directory = Fexpand_file_name (directory, Qnil);
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102 directory = Ffile_name_as_directory (directory);
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103 directorylen = XSTRING_LENGTH (directory);
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104
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|
771
|
105 statbuf = (Intbyte *) alloca (directorylen + MAXNAMLEN + 1);
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428
|
106 memcpy (statbuf, XSTRING_DATA (directory), directorylen);
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|
107 statbuf_tail = statbuf + directorylen;
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108
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109 /* XEmacs: this should come after Ffile_name_as_directory() to avoid
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110 potential regexp cache smashage. It comes before the opendir()
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111 because it might signal an error. */
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|
112 if (!NILP (match))
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|
|
113 {
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|
114 CHECK_STRING (match);
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115
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116 /* MATCH might be a flawed regular expression. Rather than
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117 catching and signalling our own errors, we just call
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118 compile_pattern to do the work for us. */
|
|
446
|
119 bufp = compile_pattern (match, 0, Qnil, 0, ERROR_ME);
|
|
428
|
120 }
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|
121
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|
|
122 /* Now *bufp is the compiled form of MATCH; don't call anything
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123 which might compile a new regexp until we're done with the loop! */
|
|
|
124
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|
|
125 /* Do this opendir after anything which might signal an error.
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126 NOTE: the above comment is old; previously, there was no
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127 unwind-protection in case of error, but now there is. */
|
|
771
|
128 d = qxe_opendir (XSTRING_DATA (directory));
|
|
428
|
129 if (!d)
|
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563
|
130 report_file_error ("Opening directory", directory);
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|
428
|
131
|
|
460
|
132 regex_match_object = Qt;
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133 regex_emacs_buffer = current_buffer;
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|
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134
|
|
428
|
135 record_unwind_protect (close_directory_unwind, make_opaque_ptr ((void *)d));
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|
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136
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|
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137 /* Loop reading blocks */
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|
|
138 while (1)
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|
139 {
|
|
771
|
140 DIRENTRY *dp = qxe_readdir (d);
|
|
428
|
141 int len;
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|
|
142
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|
|
143 if (!dp)
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144 break;
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|
145 len = NAMLEN (dp);
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|
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146 if (DIRENTRY_NONEMPTY (dp)
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147 && (NILP (match)
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|
148 || (0 <= re_search (bufp, dp->d_name, len, 0, len, 0))))
|
|
|
149 {
|
|
|
150 if (!NILP (files_only))
|
|
|
151 {
|
|
|
152 struct stat st;
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|
|
153 int dir_p = 0;
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|
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154
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|
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155 memcpy (statbuf_tail, dp->d_name, len);
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156 statbuf_tail[len] = 0;
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|
157
|
|
771
|
158 if (qxe_stat (statbuf, &st) == 0
|
|
428
|
159 && (st.st_mode & S_IFMT) == S_IFDIR)
|
|
|
160 dir_p = 1;
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|
|
161
|
|
|
162 if (EQ (files_only, Qt) && dir_p)
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|
163 continue;
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|
164 else if (!EQ (files_only, Qt) && !dir_p)
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|
|
165 continue;
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|
|
166 }
|
|
|
167
|
|
|
168 {
|
|
|
169 Lisp_Object name =
|
|
665
|
170 make_string ((Intbyte *)dp->d_name, len);
|
|
428
|
171 if (!NILP (full))
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|
|
172 name = concat2 (directory, name);
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|
|
173
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|
|
174 list = Fcons (name, list);
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|
|
175 }
|
|
|
176 }
|
|
|
177 }
|
|
771
|
178 unbind_to (speccount); /* This will close the dir */
|
|
428
|
179
|
|
|
180 if (NILP (nosort))
|
|
|
181 list = Fsort (Fnreverse (list), Qstring_lessp);
|
|
|
182
|
|
|
183 RETURN_UNGCPRO (list);
|
|
|
184 }
|
|
|
185
|
|
|
186 static Lisp_Object file_name_completion (Lisp_Object file,
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|
|
187 Lisp_Object directory,
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|
|
188 int all_flag, int ver_flag);
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|
|
189
|
|
|
190 DEFUN ("file-name-completion", Ffile_name_completion, 2, 2, 0, /*
|
|
444
|
191 Complete file name PARTIAL-FILENAME in directory DIRECTORY.
|
|
|
192 Return the longest prefix common to all file names in DIRECTORY
|
|
|
193 that start with PARTIAL-FILENAME.
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|
|
194 If there is only one and PARTIAL-FILENAME matches it exactly, return t.
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|
|
195 Return nil if DIRECTORY contains no name starting with PARTIAL-FILENAME.
|
|
428
|
196
|
|
444
|
197 File names which end with any member of `completion-ignored-extensions'
|
|
|
198 are not considered as possible completions for PARTIAL-FILENAME unless
|
|
|
199 there is no other possible completion. `completion-ignored-extensions'
|
|
|
200 is not applied to the names of directories.
|
|
428
|
201 */
|
|
444
|
202 (partial_filename, directory))
|
|
428
|
203 {
|
|
|
204 /* This function can GC. GC checked 1996.04.06. */
|
|
|
205 Lisp_Object handler;
|
|
|
206
|
|
|
207 /* If the directory name has special constructs in it,
|
|
|
208 call the corresponding file handler. */
|
|
|
209 handler = Ffind_file_name_handler (directory, Qfile_name_completion);
|
|
|
210 if (!NILP (handler))
|
|
444
|
211 return call3 (handler, Qfile_name_completion, partial_filename, directory);
|
|
428
|
212
|
|
|
213 /* If the file name has special constructs in it,
|
|
|
214 call the corresponding file handler. */
|
|
444
|
215 handler = Ffind_file_name_handler (partial_filename, Qfile_name_completion);
|
|
428
|
216 if (!NILP (handler))
|
|
444
|
217 return call3 (handler, Qfile_name_completion, partial_filename, directory);
|
|
428
|
218
|
|
444
|
219 return file_name_completion (partial_filename, directory, 0, 0);
|
|
428
|
220 }
|
|
|
221
|
|
|
222 DEFUN ("file-name-all-completions", Ffile_name_all_completions, 2, 2, 0, /*
|
|
444
|
223 Return a list of all completions of PARTIAL-FILENAME in DIRECTORY.
|
|
|
224 These are all file names in DIRECTORY which begin with PARTIAL-FILENAME.
|
|
428
|
225 */
|
|
444
|
226 (partial_filename, directory))
|
|
428
|
227 {
|
|
|
228 /* This function can GC. GC checked 1997.06.04. */
|
|
|
229 Lisp_Object handler;
|
|
|
230 struct gcpro gcpro1;
|
|
|
231
|
|
|
232 GCPRO1 (directory);
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|
|
233 directory = Fexpand_file_name (directory, Qnil);
|
|
|
234 /* If the file name has special constructs in it,
|
|
|
235 call the corresponding file handler. */
|
|
|
236 handler = Ffind_file_name_handler (directory, Qfile_name_all_completions);
|
|
|
237 UNGCPRO;
|
|
|
238 if (!NILP (handler))
|
|
444
|
239 return call3 (handler, Qfile_name_all_completions, partial_filename,
|
|
428
|
240 directory);
|
|
|
241
|
|
444
|
242 return file_name_completion (partial_filename, directory, 1, 0);
|
|
428
|
243 }
|
|
|
244
|
|
|
245 static int
|
|
|
246 file_name_completion_stat (Lisp_Object directory, DIRENTRY *dp,
|
|
|
247 struct stat *st_addr)
|
|
|
248 {
|
|
|
249 Bytecount len = NAMLEN (dp);
|
|
|
250 Bytecount pos = XSTRING_LENGTH (directory);
|
|
|
251 int value;
|
|
771
|
252 Intbyte *fullname = (Intbyte *) alloca (len + pos + 2);
|
|
428
|
253
|
|
|
254 memcpy (fullname, XSTRING_DATA (directory), pos);
|
|
|
255 if (!IS_DIRECTORY_SEP (fullname[pos - 1]))
|
|
|
256 fullname[pos++] = DIRECTORY_SEP;
|
|
|
257
|
|
|
258 memcpy (fullname + pos, dp->d_name, len);
|
|
|
259 fullname[pos + len] = 0;
|
|
|
260
|
|
|
261 #ifdef S_IFLNK
|
|
|
262 /* We want to return success if a link points to a nonexistent file,
|
|
|
263 but we want to return the status for what the link points to,
|
|
|
264 in case it is a directory. */
|
|
771
|
265 value = qxe_lstat (fullname, st_addr);
|
|
428
|
266 if (S_ISLNK (st_addr->st_mode))
|
|
771
|
267 qxe_stat (fullname, st_addr);
|
|
428
|
268 #else
|
|
771
|
269 value = qxe_stat (fullname, st_addr);
|
|
428
|
270 #endif
|
|
|
271 return value;
|
|
|
272 }
|
|
|
273
|
|
|
274 static Lisp_Object
|
|
|
275 file_name_completion_unwind (Lisp_Object locative)
|
|
|
276 {
|
|
|
277 DIR *d;
|
|
|
278 Lisp_Object obj = XCAR (locative);
|
|
|
279
|
|
|
280 if (!NILP (obj))
|
|
|
281 {
|
|
|
282 d = (DIR *)get_opaque_ptr (obj);
|
|
771
|
283 qxe_closedir (d);
|
|
428
|
284 free_opaque_ptr (obj);
|
|
|
285 }
|
|
|
286 free_cons (XCONS (locative));
|
|
|
287 return Qnil;
|
|
|
288 }
|
|
|
289
|
|
|
290 static Lisp_Object
|
|
|
291 file_name_completion (Lisp_Object file, Lisp_Object directory, int all_flag,
|
|
|
292 int ver_flag)
|
|
|
293 {
|
|
|
294 /* This function can GC */
|
|
|
295 DIR *d = 0;
|
|
|
296 int matchcount = 0;
|
|
|
297 Lisp_Object bestmatch = Qnil;
|
|
|
298 Charcount bestmatchsize = 0;
|
|
|
299 struct stat st;
|
|
|
300 int passcount;
|
|
|
301 int speccount = specpdl_depth ();
|
|
|
302 Charcount file_name_length;
|
|
|
303 Lisp_Object locative;
|
|
|
304 struct gcpro gcpro1, gcpro2, gcpro3;
|
|
|
305
|
|
|
306 GCPRO3 (file, directory, bestmatch);
|
|
|
307
|
|
|
308 CHECK_STRING (file);
|
|
|
309
|
|
442
|
310 #ifdef WIN32_NATIVE
|
|
428
|
311 /* Filename completion on Windows ignores case, since Windows
|
|
|
312 filesystems do. */
|
|
|
313 specbind (Qcompletion_ignore_case, Qt);
|
|
442
|
314 #endif /* WIN32_NATIVE */
|
|
428
|
315
|
|
|
316 #ifdef FILE_SYSTEM_CASE
|
|
|
317 file = FILE_SYSTEM_CASE (file);
|
|
|
318 #endif
|
|
|
319 directory = Fexpand_file_name (directory, Qnil);
|
|
|
320 file_name_length = XSTRING_CHAR_LENGTH (file);
|
|
|
321
|
|
|
322 /* With passcount = 0, ignore files that end in an ignored extension.
|
|
|
323 If nothing found then try again with passcount = 1, don't ignore them.
|
|
|
324 If looking for all completions, start with passcount = 1,
|
|
|
325 so always take even the ignored ones.
|
|
|
326
|
|
|
327 ** It would not actually be helpful to the user to ignore any possible
|
|
|
328 completions when making a list of them.** */
|
|
|
329
|
|
|
330 /* We cannot use close_directory_unwind() because we change the
|
|
|
331 directory. The old code used to just avoid signaling errors, and
|
|
|
332 call closedir, but it was wrong, because it made sane handling of
|
|
|
333 QUIT impossible and, besides, various utility functions like
|
|
|
334 regexp_ignore_completion_p can signal errors. */
|
|
|
335 locative = noseeum_cons (Qnil, Qnil);
|
|
|
336 record_unwind_protect (file_name_completion_unwind, locative);
|
|
|
337
|
|
|
338 for (passcount = !!all_flag; NILP (bestmatch) && passcount < 2; passcount++)
|
|
|
339 {
|
|
771
|
340 d = qxe_opendir (XSTRING_DATA (Fdirectory_file_name (directory)));
|
|
428
|
341 if (!d)
|
|
563
|
342 report_file_error ("Opening directory", directory);
|
|
428
|
343 XCAR (locative) = make_opaque_ptr ((void *)d);
|
|
|
344
|
|
|
345 /* Loop reading blocks */
|
|
|
346 while (1)
|
|
|
347 {
|
|
|
348 DIRENTRY *dp;
|
|
|
349 Bytecount len;
|
|
|
350 /* scmp() works in characters, not bytes, so we have to compute
|
|
|
351 this value: */
|
|
|
352 Charcount cclen;
|
|
|
353 int directoryp;
|
|
|
354 int ignored_extension_p = 0;
|
|
665
|
355 Intbyte *d_name;
|
|
428
|
356
|
|
771
|
357 dp = qxe_readdir (d);
|
|
428
|
358 if (!dp) break;
|
|
|
359
|
|
771
|
360 /* Cast to Intbyte* is OK, as qxe_readdir() Mule-encapsulates. */
|
|
665
|
361 d_name = (Intbyte *) dp->d_name;
|
|
428
|
362 len = NAMLEN (dp);
|
|
|
363 cclen = bytecount_to_charcount (d_name, len);
|
|
|
364
|
|
|
365 QUIT;
|
|
|
366
|
|
|
367 if (! DIRENTRY_NONEMPTY (dp)
|
|
|
368 || cclen < file_name_length
|
|
|
369 || 0 <= scmp (d_name, XSTRING_DATA (file), file_name_length))
|
|
|
370 continue;
|
|
|
371
|
|
|
372 if (file_name_completion_stat (directory, dp, &st) < 0)
|
|
|
373 continue;
|
|
|
374
|
|
|
375 directoryp = ((st.st_mode & S_IFMT) == S_IFDIR);
|
|
|
376 if (directoryp)
|
|
|
377 {
|
|
|
378 #ifndef TRIVIAL_DIRECTORY_ENTRY
|
|
|
379 #define TRIVIAL_DIRECTORY_ENTRY(n) (!strcmp (n, ".") || !strcmp (n, ".."))
|
|
|
380 #endif
|
|
|
381 /* "." and ".." are never interesting as completions, but are
|
|
|
382 actually in the way in a directory containing only one file. */
|
|
|
383 if (!passcount && TRIVIAL_DIRECTORY_ENTRY (dp->d_name))
|
|
|
384 continue;
|
|
|
385 }
|
|
|
386 else
|
|
|
387 {
|
|
|
388 /* Compare extensions-to-be-ignored against end of this file name */
|
|
|
389 /* if name is not an exact match against specified string. */
|
|
|
390 if (!passcount && cclen > file_name_length)
|
|
|
391 {
|
|
|
392 Lisp_Object tem;
|
|
|
393 /* and exit this for loop if a match is found */
|
|
|
394 EXTERNAL_LIST_LOOP (tem, Vcompletion_ignored_extensions)
|
|
|
395 {
|
|
|
396 Lisp_Object elt = XCAR (tem);
|
|
|
397 Charcount skip;
|
|
|
398
|
|
|
399 CHECK_STRING (elt);
|
|
|
400
|
|
|
401 skip = cclen - XSTRING_CHAR_LENGTH (elt);
|
|
|
402 if (skip < 0) continue;
|
|
|
403
|
|
|
404 if (0 > scmp (charptr_n_addr (d_name, skip),
|
|
|
405 XSTRING_DATA (elt),
|
|
|
406 XSTRING_CHAR_LENGTH (elt)))
|
|
|
407 {
|
|
|
408 ignored_extension_p = 1;
|
|
|
409 break;
|
|
|
410 }
|
|
|
411 }
|
|
|
412 }
|
|
|
413 }
|
|
|
414
|
|
|
415 /* If an ignored-extensions match was found,
|
|
|
416 don't process this name as a completion. */
|
|
|
417 if (!passcount && ignored_extension_p)
|
|
|
418 continue;
|
|
|
419
|
|
|
420 if (!passcount && regexp_ignore_completion_p (d_name, Qnil, 0, cclen))
|
|
|
421 continue;
|
|
|
422
|
|
|
423 /* Update computation of how much all possible completions match */
|
|
|
424 matchcount++;
|
|
|
425
|
|
|
426 if (all_flag || NILP (bestmatch))
|
|
|
427 {
|
|
|
428 Lisp_Object name = Qnil;
|
|
|
429 struct gcpro ngcpro1;
|
|
|
430 NGCPRO1 (name);
|
|
|
431 /* This is a possible completion */
|
|
|
432 name = make_string (d_name, len);
|
|
|
433 if (directoryp) /* Completion is a directory; end it with '/' */
|
|
|
434 name = Ffile_name_as_directory (name);
|
|
|
435 if (all_flag)
|
|
|
436 {
|
|
|
437 bestmatch = Fcons (name, bestmatch);
|
|
|
438 }
|
|
|
439 else
|
|
|
440 {
|
|
|
441 bestmatch = name;
|
|
|
442 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
443 }
|
|
|
444 NUNGCPRO;
|
|
|
445 }
|
|
|
446 else
|
|
|
447 {
|
|
|
448 Charcount compare = min (bestmatchsize, cclen);
|
|
665
|
449 Intbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
450 Intbyte *p2 = d_name;
|
|
428
|
451 Charcount matchsize = scmp (p1, p2, compare);
|
|
|
452
|
|
|
453 if (matchsize < 0)
|
|
|
454 matchsize = compare;
|
|
|
455 if (completion_ignore_case)
|
|
|
456 {
|
|
|
457 /* If this is an exact match except for case,
|
|
|
458 use it as the best match rather than one that is not
|
|
|
459 an exact match. This way, we get the case pattern
|
|
|
460 of the actual match. */
|
|
|
461 if ((matchsize == cclen
|
|
|
462 && matchsize + !!directoryp
|
|
|
463 < XSTRING_CHAR_LENGTH (bestmatch))
|
|
|
464 ||
|
|
|
465 /* If there is no exact match ignoring case,
|
|
|
466 prefer a match that does not change the case
|
|
|
467 of the input. */
|
|
|
468 (((matchsize == cclen)
|
|
|
469 ==
|
|
|
470 (matchsize + !!directoryp
|
|
|
471 == XSTRING_CHAR_LENGTH (bestmatch)))
|
|
|
472 /* If there is more than one exact match aside from
|
|
|
473 case, and one of them is exact including case,
|
|
|
474 prefer that one. */
|
|
|
475 && 0 > scmp_1 (p2, XSTRING_DATA (file),
|
|
|
476 file_name_length, 0)
|
|
|
477 && 0 <= scmp_1 (p1, XSTRING_DATA (file),
|
|
|
478 file_name_length, 0)))
|
|
|
479 {
|
|
|
480 bestmatch = make_string (d_name, len);
|
|
|
481 if (directoryp)
|
|
|
482 bestmatch = Ffile_name_as_directory (bestmatch);
|
|
|
483 }
|
|
|
484 }
|
|
|
485
|
|
|
486 /* If this directory all matches,
|
|
|
487 see if implicit following slash does too. */
|
|
|
488 if (directoryp
|
|
|
489 && compare == matchsize
|
|
|
490 && bestmatchsize > matchsize
|
|
|
491 && IS_ANY_SEP (charptr_emchar_n (p1, matchsize)))
|
|
|
492 matchsize++;
|
|
|
493 bestmatchsize = matchsize;
|
|
|
494 }
|
|
|
495 }
|
|
771
|
496 qxe_closedir (d);
|
|
428
|
497 free_opaque_ptr (XCAR (locative));
|
|
|
498 XCAR (locative) = Qnil;
|
|
|
499 }
|
|
|
500
|
|
771
|
501 unbind_to (speccount);
|
|
428
|
502
|
|
|
503 UNGCPRO;
|
|
|
504
|
|
|
505 if (all_flag || NILP (bestmatch))
|
|
|
506 return bestmatch;
|
|
|
507 if (matchcount == 1 && bestmatchsize == file_name_length)
|
|
|
508 return Qt;
|
|
|
509 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
510 }
|
|
|
511
|
|
|
512
|
|
|
513 static Lisp_Object user_name_completion (Lisp_Object user,
|
|
|
514 int all_flag,
|
|
|
515 int *uniq);
|
|
|
516
|
|
|
517 DEFUN ("user-name-completion", Fuser_name_completion, 1, 1, 0, /*
|
|
444
|
518 Complete user name from PARTIAL-USERNAME.
|
|
|
519 Return the longest prefix common to all user names starting with
|
|
|
520 PARTIAL-USERNAME. If there is only one and PARTIAL-USERNAME matches
|
|
|
521 it exactly, returns t. Return nil if there is no user name starting
|
|
|
522 with PARTIAL-USERNAME.
|
|
428
|
523 */
|
|
444
|
524 (partial_username))
|
|
428
|
525 {
|
|
444
|
526 return user_name_completion (partial_username, 0, NULL);
|
|
428
|
527 }
|
|
|
528
|
|
|
529 DEFUN ("user-name-completion-1", Fuser_name_completion_1, 1, 1, 0, /*
|
|
444
|
530 Complete user name from PARTIAL-USERNAME.
|
|
428
|
531
|
|
|
532 This function is identical to `user-name-completion', except that
|
|
|
533 the cons of the completion and an indication of whether the
|
|
|
534 completion was unique is returned.
|
|
|
535
|
|
444
|
536 The car of the returned value is the longest prefix common to all user
|
|
|
537 names that start with PARTIAL-USERNAME. If there is only one and
|
|
|
538 PARTIAL-USERNAME matches it exactly, the car is t. The car is nil if
|
|
|
539 there is no user name starting with PARTIAL-USERNAME. The cdr of the
|
|
|
540 result is non-nil if and only if the completion returned in the car
|
|
|
541 was unique.
|
|
428
|
542 */
|
|
444
|
543 (partial_username))
|
|
428
|
544 {
|
|
|
545 int uniq;
|
|
444
|
546 Lisp_Object completed = user_name_completion (partial_username, 0, &uniq);
|
|
428
|
547 return Fcons (completed, uniq ? Qt : Qnil);
|
|
|
548 }
|
|
|
549
|
|
|
550 DEFUN ("user-name-all-completions", Fuser_name_all_completions, 1, 1, 0, /*
|
|
444
|
551 Return a list of all user name completions from PARTIAL-USERNAME.
|
|
|
552 These are all the user names which begin with PARTIAL-USERNAME.
|
|
428
|
553 */
|
|
444
|
554 (partial_username))
|
|
428
|
555 {
|
|
444
|
556 return user_name_completion (partial_username, 1, NULL);
|
|
428
|
557 }
|
|
|
558
|
|
440
|
559 struct user_name
|
|
|
560 {
|
|
665
|
561 Intbyte *ptr;
|
|
647
|
562 Bytecount len;
|
|
440
|
563 };
|
|
|
564
|
|
|
565 struct user_cache
|
|
|
566 {
|
|
|
567 struct user_name *user_names;
|
|
428
|
568 int length;
|
|
|
569 int size;
|
|
|
570 EMACS_TIME last_rebuild_time;
|
|
|
571 };
|
|
|
572 static struct user_cache user_cache;
|
|
|
573
|
|
|
574 static void
|
|
|
575 free_user_cache (struct user_cache *cache)
|
|
|
576 {
|
|
|
577 int i;
|
|
|
578 for (i = 0; i < cache->length; i++)
|
|
440
|
579 xfree (cache->user_names[i].ptr);
|
|
|
580 xfree (cache->user_names);
|
|
|
581 xzero (*cache);
|
|
428
|
582 }
|
|
|
583
|
|
|
584 static Lisp_Object
|
|
440
|
585 user_name_completion_unwind (Lisp_Object cache_incomplete_p)
|
|
428
|
586 {
|
|
528
|
587 #ifndef WIN32_NATIVE
|
|
440
|
588 endpwent ();
|
|
|
589 speed_up_interrupts ();
|
|
528
|
590 #endif
|
|
428
|
591
|
|
440
|
592 if (! NILP (XCAR (cache_incomplete_p)))
|
|
|
593 free_user_cache (&user_cache);
|
|
|
594
|
|
|
595 free_cons (XCONS (cache_incomplete_p));
|
|
428
|
596
|
|
|
597 return Qnil;
|
|
|
598 }
|
|
|
599
|
|
440
|
600 #define USER_CACHE_TTL (24*60*60) /* Time to live: 1 day, in seconds */
|
|
428
|
601
|
|
|
602 static Lisp_Object
|
|
|
603 user_name_completion (Lisp_Object user, int all_flag, int *uniq)
|
|
|
604 {
|
|
|
605 /* This function can GC */
|
|
|
606 int matchcount = 0;
|
|
|
607 Lisp_Object bestmatch = Qnil;
|
|
|
608 Charcount bestmatchsize = 0;
|
|
|
609 Charcount user_name_length;
|
|
|
610 EMACS_TIME t;
|
|
|
611 int i;
|
|
|
612 struct gcpro gcpro1, gcpro2;
|
|
|
613
|
|
|
614 GCPRO2 (user, bestmatch);
|
|
|
615
|
|
|
616 CHECK_STRING (user);
|
|
|
617
|
|
|
618 user_name_length = XSTRING_CHAR_LENGTH (user);
|
|
|
619
|
|
|
620 /* Cache user name lookups because it tends to be quite slow.
|
|
|
621 * Rebuild the cache occasionally to catch changes */
|
|
|
622 EMACS_GET_TIME (t);
|
|
440
|
623 if (user_cache.user_names &&
|
|
428
|
624 (EMACS_SECS (t) - EMACS_SECS (user_cache.last_rebuild_time)
|
|
440
|
625 > USER_CACHE_TTL))
|
|
|
626 free_user_cache (&user_cache);
|
|
428
|
627
|
|
440
|
628 if (!user_cache.user_names)
|
|
428
|
629 {
|
|
528
|
630 #ifndef WIN32_NATIVE
|
|
428
|
631 struct passwd *pwd;
|
|
528
|
632 #else
|
|
|
633 DWORD entriesread;
|
|
|
634 DWORD totalentries;
|
|
|
635 DWORD resume_handle = 0;
|
|
|
636 #endif
|
|
|
637
|
|
440
|
638 Lisp_Object cache_incomplete_p = noseeum_cons (Qt, Qnil);
|
|
|
639 int speccount = specpdl_depth ();
|
|
|
640
|
|
528
|
641 record_unwind_protect (user_name_completion_unwind, cache_incomplete_p);
|
|
|
642 #ifndef WIN32_NATIVE
|
|
428
|
643 slow_down_interrupts ();
|
|
|
644 setpwent ();
|
|
771
|
645 while ((pwd = qxe_getpwent ()))
|
|
428
|
646 {
|
|
|
647 QUIT;
|
|
440
|
648 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
649 user_cache.length + 1, struct user_name);
|
|
771
|
650 user_cache.user_names[user_cache.length].ptr =
|
|
|
651 (Intbyte *) xstrdup (pwd->pw_name);
|
|
|
652 user_cache.user_names[user_cache.length].len = strlen (pwd->pw_name);
|
|
440
|
653 user_cache.length++;
|
|
428
|
654 }
|
|
528
|
655 #else
|
|
531
|
656 if (xNetUserEnum)
|
|
528
|
657 {
|
|
531
|
658 do
|
|
528
|
659 {
|
|
531
|
660 USER_INFO_0 *bufptr;
|
|
|
661 NET_API_STATUS status_status_statui_statum_statu;
|
|
|
662 int i;
|
|
|
663
|
|
|
664 QUIT;
|
|
|
665 status_status_statui_statum_statu =
|
|
|
666 xNetUserEnum (NULL, 0, 0, (LPBYTE *) &bufptr, 1024,
|
|
|
667 &entriesread, &totalentries, &resume_handle);
|
|
|
668 if (status_status_statui_statum_statu != NERR_Success &&
|
|
|
669 status_status_statui_statum_statu != ERROR_MORE_DATA)
|
|
|
670 invalid_operation ("Error enumerating users",
|
|
|
671 make_int (GetLastError ()));
|
|
647
|
672 for (i = 0; i < (int) entriesread; i++)
|
|
531
|
673 {
|
|
|
674 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
675 user_cache.length + 1, struct user_name);
|
|
771
|
676 TO_INTERNAL_FORMAT (C_STRING,
|
|
|
677 bufptr[i].usri0_name,
|
|
531
|
678 MALLOC,
|
|
|
679 (user_cache.
|
|
|
680 user_names[user_cache.length].ptr,
|
|
|
681 user_cache.
|
|
|
682 user_names[user_cache.length].len),
|
|
771
|
683 Qmswindows_unicode);
|
|
531
|
684 user_cache.length++;
|
|
|
685 }
|
|
|
686 xNetApiBufferFree (bufptr);
|
|
528
|
687 }
|
|
531
|
688 while (entriesread != totalentries);
|
|
528
|
689 }
|
|
546
|
690 else /* Win 9x */
|
|
|
691 {
|
|
|
692 Extbyte name[2 * (UNLEN + 1)];
|
|
|
693 DWORD length = sizeof (name);
|
|
|
694
|
|
771
|
695 if (qxeGetUserName (name, &length))
|
|
546
|
696 {
|
|
|
697 DO_REALLOC (user_cache.user_names, user_cache.size,
|
|
|
698 user_cache.length + 1, struct user_name);
|
|
|
699 TO_INTERNAL_FORMAT (C_STRING, name,
|
|
|
700 MALLOC,
|
|
|
701 (user_cache.
|
|
|
702 user_names[user_cache.length].ptr,
|
|
|
703 user_cache.
|
|
|
704 user_names[user_cache.length].len),
|
|
|
705 Qmswindows_tstr);
|
|
|
706 user_cache.length++;
|
|
|
707 }
|
|
|
708 }
|
|
528
|
709 #endif
|
|
|
710
|
|
440
|
711 XCAR (cache_incomplete_p) = Qnil;
|
|
771
|
712 unbind_to (speccount);
|
|
440
|
713
|
|
428
|
714 EMACS_GET_TIME (user_cache.last_rebuild_time);
|
|
|
715 }
|
|
|
716
|
|
|
717 for (i = 0; i < user_cache.length; i++)
|
|
|
718 {
|
|
665
|
719 Intbyte *u_name = user_cache.user_names[i].ptr;
|
|
440
|
720 Bytecount len = user_cache.user_names[i].len;
|
|
428
|
721 /* scmp() works in chars, not bytes, so we have to compute this: */
|
|
|
722 Charcount cclen = bytecount_to_charcount (u_name, len);
|
|
|
723
|
|
|
724 QUIT;
|
|
|
725
|
|
|
726 if (cclen < user_name_length
|
|
|
727 || 0 <= scmp_1 (u_name, XSTRING_DATA (user), user_name_length, 0))
|
|
|
728 continue;
|
|
|
729
|
|
|
730 matchcount++; /* count matching completions */
|
|
|
731
|
|
|
732 if (all_flag || NILP (bestmatch))
|
|
|
733 {
|
|
|
734 Lisp_Object name = Qnil;
|
|
|
735 struct gcpro ngcpro1;
|
|
|
736 NGCPRO1 (name);
|
|
|
737 /* This is a possible completion */
|
|
|
738 name = make_string (u_name, len);
|
|
|
739 if (all_flag)
|
|
|
740 {
|
|
|
741 bestmatch = Fcons (name, bestmatch);
|
|
|
742 }
|
|
|
743 else
|
|
|
744 {
|
|
|
745 bestmatch = name;
|
|
|
746 bestmatchsize = XSTRING_CHAR_LENGTH (name);
|
|
|
747 }
|
|
|
748 NUNGCPRO;
|
|
|
749 }
|
|
|
750 else
|
|
|
751 {
|
|
|
752 Charcount compare = min (bestmatchsize, cclen);
|
|
665
|
753 Intbyte *p1 = XSTRING_DATA (bestmatch);
|
|
|
754 Intbyte *p2 = u_name;
|
|
428
|
755 Charcount matchsize = scmp_1 (p1, p2, compare, 0);
|
|
|
756
|
|
|
757 if (matchsize < 0)
|
|
|
758 matchsize = compare;
|
|
|
759
|
|
|
760 bestmatchsize = matchsize;
|
|
|
761 }
|
|
|
762 }
|
|
|
763
|
|
|
764 UNGCPRO;
|
|
|
765
|
|
|
766 if (uniq)
|
|
|
767 *uniq = (matchcount == 1);
|
|
|
768
|
|
|
769 if (all_flag || NILP (bestmatch))
|
|
|
770 return bestmatch;
|
|
|
771 if (matchcount == 1 && bestmatchsize == user_name_length)
|
|
|
772 return Qt;
|
|
|
773 return Fsubstring (bestmatch, Qzero, make_int (bestmatchsize));
|
|
|
774 }
|
|
|
775
|
|
|
776
|
|
|
777 Lisp_Object
|
|
771
|
778 make_directory_hash_table (const Intbyte *path)
|
|
428
|
779 {
|
|
|
780 DIR *d;
|
|
771
|
781 if ((d = qxe_opendir (path)))
|
|
428
|
782 {
|
|
|
783 DIRENTRY *dp;
|
|
|
784 Lisp_Object hash =
|
|
|
785 make_lisp_hash_table (20, HASH_TABLE_NON_WEAK, HASH_TABLE_EQUAL);
|
|
|
786
|
|
771
|
787 while ((dp = qxe_readdir (d)))
|
|
428
|
788 {
|
|
|
789 Bytecount len = NAMLEN (dp);
|
|
|
790 if (DIRENTRY_NONEMPTY (dp))
|
|
771
|
791 /* Cast to Intbyte* is OK, as qxe_readdir() Mule-encapsulates. */
|
|
665
|
792 Fputhash (make_string ((Intbyte *) dp->d_name, len), Qt, hash);
|
|
428
|
793 }
|
|
771
|
794 qxe_closedir (d);
|
|
428
|
795 return hash;
|
|
|
796 }
|
|
|
797 else
|
|
|
798 return Qnil;
|
|
|
799 }
|
|
|
800
|
|
707
|
801 #if 0
|
|
|
802 /* ... never used ... should use list2 directly anyway ... */
|
|
|
803 /* NOTE: This function can never return a negative value. */
|
|
428
|
804 Lisp_Object
|
|
|
805 wasteful_word_to_lisp (unsigned int item)
|
|
|
806 {
|
|
|
807 /* Compatibility: in other versions, file-attributes returns a LIST
|
|
|
808 of two 16 bit integers... */
|
|
|
809 Lisp_Object cons = word_to_lisp (item);
|
|
|
810 XCDR (cons) = Fcons (XCDR (cons), Qnil);
|
|
|
811 return cons;
|
|
|
812 }
|
|
707
|
813 #endif
|
|
428
|
814
|
|
|
815 DEFUN ("file-attributes", Ffile_attributes, 1, 1, 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.
|
|
|
834 */
|
|
|
835 (filename))
|
|
|
836 {
|
|
|
837 /* This function can GC. GC checked 1997.06.04. */
|
|
|
838 Lisp_Object values[12];
|
|
|
839 Lisp_Object directory = Qnil;
|
|
|
840 struct stat s;
|
|
|
841 char modes[10];
|
|
|
842 Lisp_Object handler;
|
|
|
843 struct gcpro gcpro1, gcpro2;
|
|
|
844
|
|
|
845 GCPRO2 (filename, directory);
|
|
|
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))
|
|
|
852 {
|
|
|
853 UNGCPRO;
|
|
|
854 return call2 (handler, Qfile_attributes, filename);
|
|
|
855 }
|
|
|
856
|
|
771
|
857 if (qxe_lstat (XSTRING_DATA (filename), &s) < 0)
|
|
428
|
858 {
|
|
|
859 UNGCPRO;
|
|
|
860 return Qnil;
|
|
|
861 }
|
|
|
862
|
|
|
863 #ifdef BSD4_2
|
|
|
864 directory = Ffile_name_directory (filename);
|
|
|
865 #endif
|
|
|
866
|
|
442
|
867 #if 0 /* #### shouldn't this apply to WIN32_NATIVE and maybe CYGWIN? */
|
|
428
|
868 {
|
|
771
|
869 Intbyte *tmpnam = XSTRING_DATA (Ffile_name_nondirectory (filename));
|
|
|
870 Bytecount l = qxestrlen (tmpnam);
|
|
428
|
871
|
|
|
872 if (l >= 5
|
|
|
873 && S_ISREG (s.st_mode)
|
|
771
|
874 && (qxestrcasecmp (&tmpnam[l - 4], ".com") == 0 ||
|
|
|
875 qxestrcasecmp (&tmpnam[l - 4], ".exe") == 0 ||
|
|
|
876 qxestrcasecmp (&tmpnam[l - 4], ".bat") == 0))
|
|
428
|
877 {
|
|
|
878 s.st_mode |= S_IEXEC;
|
|
|
879 }
|
|
|
880 }
|
|
442
|
881 #endif
|
|
428
|
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);
|
|
707
|
900 values[4] = make_time (s.st_atime);
|
|
|
901 values[5] = make_time (s.st_mtime);
|
|
|
902 values[6] = make_time (s.st_ctime);
|
|
428
|
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)
|
|
|
907 values[7] = make_int (-1);
|
|
|
908 filemodestring (&s, modes);
|
|
665
|
909 values[8] = make_string ((Intbyte *) modes, 10);
|
|
428
|
910 #if defined (BSD4_2) || defined (BSD4_3) /* file gid will be dir gid */
|
|
|
911 {
|
|
|
912 struct stat sdir;
|
|
|
913
|
|
771
|
914 if (!NILP (directory) && qxe_stat (XSTRING_DATA (directory), &sdir) == 0)
|
|
428
|
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 {
|
|
563
|
936 DEFSYMBOL (Qdirectory_files);
|
|
|
937 DEFSYMBOL (Qfile_name_completion);
|
|
|
938 DEFSYMBOL (Qfile_name_all_completions);
|
|
|
939 DEFSYMBOL (Qfile_attributes);
|
|
428
|
940
|
|
|
941 DEFSUBR (Fdirectory_files);
|
|
|
942 DEFSUBR (Ffile_name_completion);
|
|
|
943 DEFSUBR (Ffile_name_all_completions);
|
|
|
944 DEFSUBR (Fuser_name_completion);
|
|
|
945 DEFSUBR (Fuser_name_completion_1);
|
|
|
946 DEFSUBR (Fuser_name_all_completions);
|
|
|
947 DEFSUBR (Ffile_attributes);
|
|
|
948 }
|
|
|
949
|
|
|
950 void
|
|
|
951 vars_of_dired (void)
|
|
|
952 {
|
|
|
953 DEFVAR_LISP ("completion-ignored-extensions", &Vcompletion_ignored_extensions /*
|
|
|
954 *Completion ignores filenames ending in any string in this list.
|
|
|
955 This variable does not affect lists of possible completions,
|
|
|
956 but does affect the commands that actually do completions.
|
|
770
|
957 It is used by the function `file-name-completion'.
|
|
428
|
958 */ );
|
|
|
959 Vcompletion_ignored_extensions = Qnil;
|
|
|
960 }
|
