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, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: Alexander Larsson <alexl@redhat.com>
26 #include <glocalfileenumerator.h>
27 #include <glocalfileinfo.h>
28 #include <glocalfile.h>
35 #define CHUNK_SIZE 1000
43 #include <sys/types.h>
55 struct _GLocalFileEnumerator
57 GFileEnumerator parent;
59 GFileAttributeMatcher *matcher;
60 GFileAttributeMatcher *reduced_matcher;
63 GFileQueryInfoFlags flags;
65 gboolean got_parent_info;
66 GLocalParentFileInfo parent_info;
77 gboolean follow_symlinks;
80 #define g_local_file_enumerator_get_type _g_local_file_enumerator_get_type
81 G_DEFINE_TYPE (GLocalFileEnumerator, g_local_file_enumerator, G_TYPE_FILE_ENUMERATOR);
83 static GFileInfo *g_local_file_enumerator_next_file (GFileEnumerator *enumerator,
84 GCancellable *cancellable,
86 static gboolean g_local_file_enumerator_close (GFileEnumerator *enumerator,
87 GCancellable *cancellable,
92 free_entries (GLocalFileEnumerator *local)
97 if (local->entries != NULL)
99 for (i = 0; local->entries[i].name != NULL; i++)
100 g_free (local->entries[i].name);
102 g_free (local->entries);
108 g_local_file_enumerator_finalize (GObject *object)
110 GLocalFileEnumerator *local;
112 local = G_LOCAL_FILE_ENUMERATOR (object);
114 if (local->got_parent_info)
115 _g_local_file_info_free_parent_info (&local->parent_info);
116 g_free (local->filename);
117 g_file_attribute_matcher_unref (local->matcher);
118 g_file_attribute_matcher_unref (local->reduced_matcher);
122 g_dir_close (local->dir);
124 closedir (local->dir);
129 free_entries (local);
131 G_OBJECT_CLASS (g_local_file_enumerator_parent_class)->finalize (object);
136 g_local_file_enumerator_class_init (GLocalFileEnumeratorClass *klass)
138 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
139 GFileEnumeratorClass *enumerator_class = G_FILE_ENUMERATOR_CLASS (klass);
141 gobject_class->finalize = g_local_file_enumerator_finalize;
143 enumerator_class->next_file = g_local_file_enumerator_next_file;
144 enumerator_class->close_fn = g_local_file_enumerator_close;
148 g_local_file_enumerator_init (GLocalFileEnumerator *local)
154 convert_file_to_io_error (GError **error,
159 if (file_error == NULL)
162 new_code = G_IO_ERROR_FAILED;
164 if (file_error->domain == G_FILE_ERROR)
166 switch (file_error->code)
168 case G_FILE_ERROR_NOENT:
169 new_code = G_IO_ERROR_NOT_FOUND;
171 case G_FILE_ERROR_ACCES:
172 new_code = G_IO_ERROR_PERMISSION_DENIED;
174 case G_FILE_ERROR_NOTDIR:
175 new_code = G_IO_ERROR_NOT_DIRECTORY;
177 case G_FILE_ERROR_MFILE:
178 new_code = G_IO_ERROR_TOO_MANY_OPEN_FILES;
185 g_set_error_literal (error, G_IO_ERROR,
187 file_error->message);
190 static GFileAttributeMatcher *
191 g_file_attribute_matcher_subtract_attributes (GFileAttributeMatcher *matcher,
192 const char * attributes)
194 GFileAttributeMatcher *result, *tmp;
196 tmp = g_file_attribute_matcher_new (attributes);
197 result = g_file_attribute_matcher_subtract (matcher, tmp);
198 g_file_attribute_matcher_unref (tmp);
205 _g_local_file_enumerator_new (GLocalFile *file,
206 const char *attributes,
207 GFileQueryInfoFlags flags,
208 GCancellable *cancellable,
211 GLocalFileEnumerator *local;
212 char *filename = g_file_get_path (G_FILE (file));
219 dir = g_dir_open (filename, 0, error != NULL ? &dir_error : NULL);
224 convert_file_to_io_error (error, dir_error);
225 g_error_free (dir_error);
234 dir = opendir (filename);
239 g_set_error_literal (error, G_IO_ERROR,
240 g_io_error_from_errno (errsv),
248 local = g_object_new (G_TYPE_LOCAL_FILE_ENUMERATOR,
253 local->filename = filename;
254 local->matcher = g_file_attribute_matcher_new (attributes);
256 local->reduced_matcher = g_file_attribute_matcher_subtract_attributes (local->matcher,
257 "standard::type,standard::name");
259 local->flags = flags;
261 return G_FILE_ENUMERATOR (local);
266 sort_by_inode (const void *_a, const void *_b)
268 const DirEntry *a, *b;
272 return a->inode - b->inode;
275 #ifdef HAVE_STRUCT_DIRENT_D_TYPE
277 file_type_from_dirent (char d_type)
285 return G_FILE_TYPE_SPECIAL;
287 return G_FILE_TYPE_DIRECTORY;
289 return G_FILE_TYPE_SYMBOLIC_LINK;
291 return G_FILE_TYPE_REGULAR;
294 return G_FILE_TYPE_UNKNOWN;
300 next_file_helper (GLocalFileEnumerator *local, GFileType *file_type)
302 struct dirent *entry;
303 const char *filename;
309 if (local->entries == NULL ||
310 (local->entries[local->entries_pos].name == NULL))
312 if (local->entries == NULL)
313 local->entries = g_new (DirEntry, CHUNK_SIZE + 1);
316 /* Restart by clearing old names */
317 for (i = 0; local->entries[i].name != NULL; i++)
318 g_free (local->entries[i].name);
321 for (i = 0; i < CHUNK_SIZE; i++)
323 entry = readdir (local->dir);
325 && (0 == strcmp (entry->d_name, ".") ||
326 0 == strcmp (entry->d_name, "..")))
327 entry = readdir (local->dir);
331 local->entries[i].name = g_strdup (entry->d_name);
332 local->entries[i].inode = entry->d_ino;
333 #if HAVE_STRUCT_DIRENT_D_TYPE
334 local->entries[i].type = file_type_from_dirent (entry->d_type);
336 local->entries[i].type = G_FILE_TYPE_UNKNOWN;
342 local->entries[i].name = NULL;
343 local->entries_pos = 0;
345 qsort (local->entries, i, sizeof (DirEntry), sort_by_inode);
348 filename = local->entries[local->entries_pos].name;
349 if (filename == NULL)
350 local->at_end = TRUE;
352 *file_type = local->entries[local->entries_pos].type;
354 local->entries_pos++;
362 g_local_file_enumerator_next_file (GFileEnumerator *enumerator,
363 GCancellable *cancellable,
366 GLocalFileEnumerator *local = G_LOCAL_FILE_ENUMERATOR (enumerator);
367 const char *filename;
373 if (!local->got_parent_info)
375 _g_local_file_info_get_parent_info (local->filename, local->matcher, &local->parent_info);
376 local->got_parent_info = TRUE;
382 filename = g_dir_read_name (local->dir);
383 file_type = G_FILE_TYPE_UNKNOWN;
385 filename = next_file_helper (local, &file_type);
388 if (filename == NULL)
392 path = g_build_filename (local->filename, filename, NULL);
393 if (file_type == G_FILE_TYPE_UNKNOWN ||
394 (file_type == G_FILE_TYPE_SYMBOLIC_LINK && !(local->flags & G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS)))
396 info = _g_local_file_info_get (filename, path,
404 info = _g_local_file_info_get (filename, path,
405 local->reduced_matcher,
411 g_file_info_set_name (info, filename);
412 g_file_info_set_file_type (info, file_type);
413 if (file_type == G_FILE_TYPE_SYMBOLIC_LINK)
414 g_file_info_set_is_symlink (info, TRUE);
421 /* Failed to get info */
422 /* If the file does not exist there might have been a race where
423 * the file was removed between the readdir and the stat, so we
424 * ignore the file. */
425 if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
427 g_error_free (my_error);
431 g_propagate_error (error, my_error);
438 g_local_file_enumerator_close (GFileEnumerator *enumerator,
439 GCancellable *cancellable,
442 GLocalFileEnumerator *local = G_LOCAL_FILE_ENUMERATOR (enumerator);
447 g_dir_close (local->dir);
449 closedir (local->dir);