1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
3 * Copyright (C) 2005, Red Hat, Inc.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2, or (at your option)
10 * This program 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
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
28 #include <glib/gstdio.h>
29 #include <glib/gi18n-lib.h>
32 #include "ev-backends-manager.h"
33 #include "ev-document-factory.h"
34 #include "ev-file-helpers.h"
36 static EvCompressionType
37 get_compression_from_mime_type (const gchar *mime_type)
42 if (!(p = g_strrstr (mime_type, "/")))
43 return EV_COMPRESSION_NONE;
45 if (sscanf (++p, "x-%2s%*s", type) == 1) {
46 if (g_ascii_strcasecmp (type, "gz") == 0)
47 return EV_COMPRESSION_GZIP;
48 else if (g_ascii_strcasecmp (type, "bz") == 0)
49 return EV_COMPRESSION_BZIP2;
50 else if (g_ascii_strcasecmp (type, "xz") == 0)
51 return EV_COMPRESSION_LZMA;
54 return EV_COMPRESSION_NONE;
59 * get_document_from_uri:
60 * @uri: the document URI
61 * @fast: whether to use fast MIME type detection
62 * @compression: a location to store the document's compression type
63 * @error: a #GError location to store an error, or %NULL
65 * Creates a #EvDocument instance for the document at @uri, using either
66 * fast or slow MIME type detection. If a document could be created,
67 * @compression is filled in with the document's compression type.
68 * On error, %NULL is returned and @error filled in.
70 * Returns: a new #EvDocument instance, or %NULL on error with @error filled in
73 get_document_from_uri (const char *uri,
75 EvCompressionType *compression,
78 EvDocument *document = NULL;
79 gchar *mime_type = NULL;
82 *compression = EV_COMPRESSION_NONE;
84 mime_type = ev_file_get_mime_type (uri, fast, &err);
86 if (mime_type == NULL) {
90 g_set_error_literal (error,
92 EV_DOCUMENT_ERROR_INVALID,
93 _("Unknown MIME Type"));
95 g_propagate_error (error, err);
101 document = ev_backends_manager_get_document (mime_type);
102 if (document == NULL) {
103 gchar *content_type, *mime_desc = NULL;
105 content_type = g_content_type_from_mime_type (mime_type);
107 mime_desc = g_content_type_get_description (content_type);
111 EV_DOCUMENT_ERROR_INVALID,
112 _("File type %s (%s) is not supported"),
113 mime_desc ? mime_desc : "-", mime_type);
115 g_free (content_type);
121 *compression = get_compression_from_mime_type (mime_type);
129 free_uncompressed_uri (gchar *uri_unc)
134 ev_tmp_uri_unlink (uri_unc);
139 * ev_document_factory_get_document:
141 * @error: a #GError location to store an error, or %NULL
143 * Creates a #EvDocument for the document at @uri; or, if no backend handling
144 * the document's type is found, or an error occurred on opening the document,
145 * returns %NULL and fills in @error.
146 * If the document is encrypted, it is returned but also @error is set to
147 * %EV_DOCUMENT_ERROR_ENCRYPTED.
149 * Returns: a new #EvDocument, or %NULL.
152 ev_document_factory_get_document (const char *uri, GError **error)
154 EvDocument *document;
156 EvCompressionType compression;
157 gchar *uri_unc = NULL;
160 g_return_val_if_fail (uri != NULL, NULL);
162 document = get_document_from_uri (uri, TRUE, &compression, &err);
163 g_assert (document != NULL || err != NULL);
165 if (document != NULL) {
166 uri_unc = ev_file_uncompress (uri, compression, &err);
168 g_object_set_data_full (G_OBJECT (document),
171 (GDestroyNotify) free_uncompressed_uri);
172 } else if (err != NULL) {
173 /* Error uncompressing file */
174 g_object_unref (document);
175 g_propagate_error (error, err);
179 result = ev_document_load (document, uri_unc ? uri_unc : uri, &err);
181 if (result == FALSE || err) {
183 g_error_matches (err, EV_DOCUMENT_ERROR, EV_DOCUMENT_ERROR_ENCRYPTED)) {
184 g_propagate_error (error, err);
187 /* else fall through to slow mime code section below */
192 g_object_unref (document);
196 /* Try again with slow mime detection */
197 g_clear_error (&err);
200 document = get_document_from_uri (uri, FALSE, &compression, &err);
201 if (document == NULL) {
202 g_assert (err != NULL);
203 g_propagate_error (error, err);
207 uri_unc = ev_file_uncompress (uri, compression, &err);
209 g_object_set_data_full (G_OBJECT (document),
212 (GDestroyNotify) free_uncompressed_uri);
213 } else if (err != NULL) {
214 /* Error uncompressing file */
215 g_propagate_error (error, err);
217 g_object_unref (document);
221 result = ev_document_load (document, uri_unc ? uri_unc : uri, &err);
222 if (result == FALSE) {
224 /* FIXME: this really should not happen; the backend should
225 * always return a meaningful error.
227 g_set_error_literal (&err,
229 EV_DOCUMENT_ERROR_INVALID,
230 _("Unknown MIME Type"));
231 } else if (g_error_matches (err, EV_DOCUMENT_ERROR, EV_DOCUMENT_ERROR_ENCRYPTED)) {
232 g_propagate_error (error, err);
236 g_object_unref (document);
239 g_propagate_error (error, err);
246 file_filter_add_mime_types (EvTypeInfo *info, GtkFileFilter *filter)
248 const gchar *mime_type;
251 while ((mime_type = info->mime_types[i++]))
252 gtk_file_filter_add_mime_type (filter, mime_type);
256 * ev_document_factory_add_filters:
257 * @chooser: a #GtkFileChooser
258 * @document: a #EvDocument, or %NULL
260 * Adds some file filters to @chooser.
262 * Always add a "All documents" format.
264 * If @document is not %NULL, adds a #GtkFileFilter for @document's MIME type.
266 * If @document is %NULL, adds a #GtkFileFilter for each document type that evince
270 ev_document_factory_add_filters (GtkWidget *chooser, EvDocument *document)
273 GtkFileFilter *filter;
274 GtkFileFilter *default_filter;
275 GtkFileFilter *document_filter;
277 g_return_if_fail (GTK_IS_FILE_CHOOSER (chooser));
278 g_return_if_fail (document == NULL || EV_IS_DOCUMENT (document));
280 all_types = ev_backends_manager_get_all_types_info ();
282 default_filter = document_filter = filter = gtk_file_filter_new ();
283 gtk_file_filter_set_name (filter, _("All Documents"));
284 g_list_foreach (all_types, (GFunc)file_filter_add_mime_types, filter);
285 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter);
290 info = ev_backends_manager_get_document_type_info (document);
291 default_filter = filter = gtk_file_filter_new ();
292 gtk_file_filter_set_name (filter, info->desc);
293 file_filter_add_mime_types (info, filter);
295 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter);
299 for (l = all_types; l; l = g_list_next (l)){
302 info = (EvTypeInfo *)l->data;
304 default_filter = filter = gtk_file_filter_new ();
305 gtk_file_filter_set_name (filter, info->desc);
306 file_filter_add_mime_types (info, filter);
307 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter);
311 g_list_foreach (all_types, (GFunc)g_free, NULL);
312 g_list_free (all_types);
314 filter = gtk_file_filter_new ();
315 gtk_file_filter_set_name (filter, _("All Files"));
316 gtk_file_filter_add_pattern (filter, "*");
317 gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (chooser), filter);
319 gtk_file_chooser_set_filter (GTK_FILE_CHOOSER (chooser),
320 document == NULL ? document_filter : default_filter);