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>
36 #define CHUNK_SIZE 1000
39 * It would be nice to use the dirent->d_type to check file type without
40 * needing to stat each files on linux and other systems that support it.
41 * (question: does that following symlink or not?)
50 #include <sys/types.h>
61 struct _GLocalFileEnumerator
63 GFileEnumerator parent;
65 GFileAttributeMatcher *matcher;
68 GFileQueryInfoFlags flags;
70 gboolean got_parent_info;
71 GLocalParentFileInfo parent_info;
82 gboolean follow_symlinks;
85 #define g_local_file_enumerator_get_type _g_local_file_enumerator_get_type
86 G_DEFINE_TYPE (GLocalFileEnumerator, g_local_file_enumerator, G_TYPE_FILE_ENUMERATOR);
88 static GFileInfo *g_local_file_enumerator_next_file (GFileEnumerator *enumerator,
89 GCancellable *cancellable,
91 static gboolean g_local_file_enumerator_close (GFileEnumerator *enumerator,
92 GCancellable *cancellable,
97 free_entries (GLocalFileEnumerator *local)
102 if (local->entries != NULL)
104 for (i = 0; local->entries[i].name != NULL; i++)
105 g_free (local->entries[i].name);
107 g_free (local->entries);
113 g_local_file_enumerator_finalize (GObject *object)
115 GLocalFileEnumerator *local;
117 local = G_LOCAL_FILE_ENUMERATOR (object);
119 if (local->got_parent_info)
120 _g_local_file_info_free_parent_info (&local->parent_info);
121 g_free (local->filename);
122 g_file_attribute_matcher_unref (local->matcher);
126 g_dir_close (local->dir);
128 closedir (local->dir);
133 free_entries (local);
135 G_OBJECT_CLASS (g_local_file_enumerator_parent_class)->finalize (object);
140 g_local_file_enumerator_class_init (GLocalFileEnumeratorClass *klass)
142 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
143 GFileEnumeratorClass *enumerator_class = G_FILE_ENUMERATOR_CLASS (klass);
145 gobject_class->finalize = g_local_file_enumerator_finalize;
147 enumerator_class->next_file = g_local_file_enumerator_next_file;
148 enumerator_class->close_fn = g_local_file_enumerator_close;
152 g_local_file_enumerator_init (GLocalFileEnumerator *local)
158 convert_file_to_io_error (GError **error,
163 if (file_error == NULL)
166 new_code = G_IO_ERROR_FAILED;
168 if (file_error->domain == G_FILE_ERROR)
170 switch (file_error->code)
172 case G_FILE_ERROR_NOENT:
173 new_code = G_IO_ERROR_NOT_FOUND;
175 case G_FILE_ERROR_ACCES:
176 new_code = G_IO_ERROR_PERMISSION_DENIED;
178 case G_FILE_ERROR_NOTDIR:
179 new_code = G_IO_ERROR_NOT_DIRECTORY;
181 case G_FILE_ERROR_MFILE:
182 new_code = G_IO_ERROR_TOO_MANY_OPEN_FILES;
189 g_set_error_literal (error, G_IO_ERROR,
191 file_error->message);
196 _g_local_file_enumerator_new (GLocalFile *file,
197 const char *attributes,
198 GFileQueryInfoFlags flags,
199 GCancellable *cancellable,
202 GLocalFileEnumerator *local;
203 char *filename = g_file_get_path (G_FILE (file));
210 dir = g_dir_open (filename, 0, error != NULL ? &dir_error : NULL);
215 convert_file_to_io_error (error, dir_error);
216 g_error_free (dir_error);
225 dir = opendir (filename);
230 g_set_error_literal (error, G_IO_ERROR,
231 g_io_error_from_errno (errsv),
239 local = g_object_new (G_TYPE_LOCAL_FILE_ENUMERATOR,
244 local->filename = filename;
245 local->matcher = g_file_attribute_matcher_new (attributes);
246 local->flags = flags;
248 return G_FILE_ENUMERATOR (local);
253 sort_by_inode (const void *_a, const void *_b)
255 const DirEntry *a, *b;
259 return a->inode - b->inode;
263 next_file_helper (GLocalFileEnumerator *local)
265 struct dirent *entry;
266 const char *filename;
272 if (local->entries == NULL ||
273 (local->entries[local->entries_pos].name == NULL))
275 if (local->entries == NULL)
276 local->entries = g_new (DirEntry, CHUNK_SIZE + 1);
279 /* Restart by clearing old names */
280 for (i = 0; local->entries[i].name != NULL; i++)
281 g_free (local->entries[i].name);
284 for (i = 0; i < CHUNK_SIZE; i++)
286 entry = readdir (local->dir);
288 && (0 == strcmp (entry->d_name, ".") ||
289 0 == strcmp (entry->d_name, "..")))
290 entry = readdir (local->dir);
294 local->entries[i].name = g_strdup (entry->d_name);
295 local->entries[i].inode = entry->d_ino;
300 local->entries[i].name = NULL;
301 local->entries_pos = 0;
303 qsort (local->entries, i, sizeof (DirEntry), sort_by_inode);
306 filename = local->entries[local->entries_pos++].name;
307 if (filename == NULL)
308 local->at_end = TRUE;
316 g_local_file_enumerator_next_file (GFileEnumerator *enumerator,
317 GCancellable *cancellable,
320 GLocalFileEnumerator *local = G_LOCAL_FILE_ENUMERATOR (enumerator);
321 const char *filename;
326 if (!local->got_parent_info)
328 _g_local_file_info_get_parent_info (local->filename, local->matcher, &local->parent_info);
329 local->got_parent_info = TRUE;
335 filename = g_dir_read_name (local->dir);
337 filename = next_file_helper (local);
340 if (filename == NULL)
344 path = g_build_filename (local->filename, filename, NULL);
345 info = _g_local_file_info_get (filename, path,
354 /* Failed to get info */
355 /* If the file does not exist there might have been a race where
356 * the file was removed between the readdir and the stat, so we
357 * ignore the file. */
358 if (my_error->domain == G_IO_ERROR &&
359 my_error->code == G_IO_ERROR_NOT_FOUND)
361 g_error_free (my_error);
365 g_propagate_error (error, my_error);
372 g_local_file_enumerator_close (GFileEnumerator *enumerator,
373 GCancellable *cancellable,
376 GLocalFileEnumerator *local = G_LOCAL_FILE_ENUMERATOR (enumerator);
381 g_dir_close (local->dir);
383 closedir (local->dir);