1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 * Author: Alexander Larsson <alexl@redhat.com>
24 #include <glocalfileenumerator.h>
25 #include <glocalfileinfo.h>
26 #include <glocalfile.h>
33 #define CHUNK_SIZE 1000
41 #include <sys/types.h>
53 struct _GLocalFileEnumerator
55 GFileEnumerator parent;
57 GFileAttributeMatcher *matcher;
58 GFileAttributeMatcher *reduced_matcher;
61 GFileQueryInfoFlags flags;
63 gboolean got_parent_info;
64 GLocalParentFileInfo parent_info;
75 gboolean follow_symlinks;
78 #define g_local_file_enumerator_get_type _g_local_file_enumerator_get_type
79 G_DEFINE_TYPE (GLocalFileEnumerator, g_local_file_enumerator, G_TYPE_FILE_ENUMERATOR);
81 static GFileInfo *g_local_file_enumerator_next_file (GFileEnumerator *enumerator,
82 GCancellable *cancellable,
84 static gboolean g_local_file_enumerator_close (GFileEnumerator *enumerator,
85 GCancellable *cancellable,
90 free_entries (GLocalFileEnumerator *local)
95 if (local->entries != NULL)
97 for (i = 0; local->entries[i].name != NULL; i++)
98 g_free (local->entries[i].name);
100 g_free (local->entries);
106 g_local_file_enumerator_finalize (GObject *object)
108 GLocalFileEnumerator *local;
110 local = G_LOCAL_FILE_ENUMERATOR (object);
112 if (local->got_parent_info)
113 _g_local_file_info_free_parent_info (&local->parent_info);
114 g_free (local->filename);
115 g_file_attribute_matcher_unref (local->matcher);
116 g_file_attribute_matcher_unref (local->reduced_matcher);
120 g_dir_close (local->dir);
122 closedir (local->dir);
127 free_entries (local);
129 G_OBJECT_CLASS (g_local_file_enumerator_parent_class)->finalize (object);
134 g_local_file_enumerator_class_init (GLocalFileEnumeratorClass *klass)
136 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
137 GFileEnumeratorClass *enumerator_class = G_FILE_ENUMERATOR_CLASS (klass);
139 gobject_class->finalize = g_local_file_enumerator_finalize;
141 enumerator_class->next_file = g_local_file_enumerator_next_file;
142 enumerator_class->close_fn = g_local_file_enumerator_close;
146 g_local_file_enumerator_init (GLocalFileEnumerator *local)
152 convert_file_to_io_error (GError **error,
157 if (file_error == NULL)
160 new_code = G_IO_ERROR_FAILED;
162 if (file_error->domain == G_FILE_ERROR)
164 switch (file_error->code)
166 case G_FILE_ERROR_NOENT:
167 new_code = G_IO_ERROR_NOT_FOUND;
169 case G_FILE_ERROR_ACCES:
170 new_code = G_IO_ERROR_PERMISSION_DENIED;
172 case G_FILE_ERROR_NOTDIR:
173 new_code = G_IO_ERROR_NOT_DIRECTORY;
175 case G_FILE_ERROR_MFILE:
176 new_code = G_IO_ERROR_TOO_MANY_OPEN_FILES;
183 g_set_error_literal (error, G_IO_ERROR,
185 file_error->message);
188 static GFileAttributeMatcher *
189 g_file_attribute_matcher_subtract_attributes (GFileAttributeMatcher *matcher,
190 const char * attributes)
192 GFileAttributeMatcher *result, *tmp;
194 tmp = g_file_attribute_matcher_new (attributes);
195 result = g_file_attribute_matcher_subtract (matcher, tmp);
196 g_file_attribute_matcher_unref (tmp);
203 _g_local_file_enumerator_new (GLocalFile *file,
204 const char *attributes,
205 GFileQueryInfoFlags flags,
206 GCancellable *cancellable,
209 GLocalFileEnumerator *local;
210 char *filename = g_file_get_path (G_FILE (file));
217 dir = g_dir_open (filename, 0, error != NULL ? &dir_error : NULL);
222 convert_file_to_io_error (error, dir_error);
223 g_error_free (dir_error);
232 dir = opendir (filename);
237 g_set_error_literal (error, G_IO_ERROR,
238 g_io_error_from_errno (errsv),
246 local = g_object_new (G_TYPE_LOCAL_FILE_ENUMERATOR,
251 local->filename = filename;
252 local->matcher = g_file_attribute_matcher_new (attributes);
254 local->reduced_matcher = g_file_attribute_matcher_subtract_attributes (local->matcher,
255 G_LOCAL_FILE_INFO_NOSTAT_ATTRIBUTES","
258 local->flags = flags;
260 return G_FILE_ENUMERATOR (local);
265 sort_by_inode (const void *_a, const void *_b)
267 const DirEntry *a, *b;
271 return a->inode - b->inode;
274 #ifdef HAVE_STRUCT_DIRENT_D_TYPE
276 file_type_from_dirent (char d_type)
284 return G_FILE_TYPE_SPECIAL;
286 return G_FILE_TYPE_DIRECTORY;
288 return G_FILE_TYPE_SYMBOLIC_LINK;
290 return G_FILE_TYPE_REGULAR;
293 return G_FILE_TYPE_UNKNOWN;
299 next_file_helper (GLocalFileEnumerator *local, GFileType *file_type)
301 struct dirent *entry;
302 const char *filename;
308 if (local->entries == NULL ||
309 (local->entries[local->entries_pos].name == NULL))
311 if (local->entries == NULL)
312 local->entries = g_new (DirEntry, CHUNK_SIZE + 1);
315 /* Restart by clearing old names */
316 for (i = 0; local->entries[i].name != NULL; i++)
317 g_free (local->entries[i].name);
320 for (i = 0; i < CHUNK_SIZE; i++)
322 entry = readdir (local->dir);
324 && (0 == strcmp (entry->d_name, ".") ||
325 0 == strcmp (entry->d_name, "..")))
326 entry = readdir (local->dir);
330 local->entries[i].name = g_strdup (entry->d_name);
331 local->entries[i].inode = entry->d_ino;
332 #if HAVE_STRUCT_DIRENT_D_TYPE
333 local->entries[i].type = file_type_from_dirent (entry->d_type);
335 local->entries[i].type = G_FILE_TYPE_UNKNOWN;
341 local->entries[i].name = NULL;
342 local->entries_pos = 0;
344 qsort (local->entries, i, sizeof (DirEntry), sort_by_inode);
347 filename = local->entries[local->entries_pos].name;
348 if (filename == NULL)
349 local->at_end = TRUE;
351 *file_type = local->entries[local->entries_pos].type;
353 local->entries_pos++;
361 g_local_file_enumerator_next_file (GFileEnumerator *enumerator,
362 GCancellable *cancellable,
365 GLocalFileEnumerator *local = G_LOCAL_FILE_ENUMERATOR (enumerator);
366 const char *filename;
372 if (!local->got_parent_info)
374 _g_local_file_info_get_parent_info (local->filename, local->matcher, &local->parent_info);
375 local->got_parent_info = TRUE;
381 filename = g_dir_read_name (local->dir);
382 file_type = G_FILE_TYPE_UNKNOWN;
384 filename = next_file_helper (local, &file_type);
387 if (filename == NULL)
391 path = g_build_filename (local->filename, filename, NULL);
392 if (file_type == G_FILE_TYPE_UNKNOWN ||
393 (file_type == G_FILE_TYPE_SYMBOLIC_LINK && !(local->flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS)))
395 info = _g_local_file_info_get (filename, path,
403 info = _g_local_file_info_get (filename, path,
404 local->reduced_matcher,
410 _g_local_file_info_get_nostat (info, filename, path, local->matcher);
411 g_file_info_set_file_type (info, file_type);
412 if (file_type == G_FILE_TYPE_SYMBOLIC_LINK)
413 g_file_info_set_is_symlink (info, TRUE);
420 /* Failed to get info */
421 /* If the file does not exist there might have been a race where
422 * the file was removed between the readdir and the stat, so we
423 * ignore the file. */
424 if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
426 g_error_free (my_error);
430 g_propagate_error (error, my_error);
437 g_local_file_enumerator_close (GFileEnumerator *enumerator,
438 GCancellable *cancellable,
441 GLocalFileEnumerator *local = G_LOCAL_FILE_ENUMERATOR (enumerator);
446 g_dir_close (local->dir);
448 closedir (local->dir);