2 * Claws-Mail-- a GTK+ based, lightweight, and fast e-mail client
3 * Copyright (C) 1999-2004 Hiroyuki Yamamoto
4 * This file (C) 2005 Andrej Kacian <andrej@kacian.sk>
6 * - handling of info about user-deleted feed items
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
31 /* Claws Mail includes */
33 #include <common/utils.h>
40 static RDeletedItem *_new_deleted_item()
42 RDeletedItem *ditem = g_new0(RDeletedItem, 1);
46 ditem->date_published = -1;
47 ditem->date_modified = -1;
52 static void _free_deleted_item(gpointer d, gpointer user_data)
54 RDeletedItem *ditem = (RDeletedItem *)d;
64 void rssyl_deleted_free(GSList *deleted_items)
66 if (deleted_items != NULL) {
67 debug_print("RSSyl: releasing list of deleted items\n");
68 g_slist_foreach(deleted_items, _free_deleted_item, NULL);
69 g_slist_free(deleted_items);
74 static gchar * _deleted_file_path(RFolderItem *ritem)
76 gchar *itempath, *deleted_file;
78 itempath = folder_item_get_path(&ritem->item);
79 deleted_file = g_strconcat(itempath, G_DIR_SEPARATOR_S, RSSYL_DELETED_FILE, NULL);
85 /***************************************************************/
86 GSList *rssyl_deleted_update(RFolderItem *ritem)
88 gchar *deleted_file, *contents, **lines, **line;
91 RDeletedItem *ditem = NULL;
92 GSList *deleted_items = NULL;
94 g_return_val_if_fail(ritem != NULL, NULL);
96 deleted_file = _deleted_file_path(ritem);
98 debug_print("RSSyl: getting list of deleted items from '%s'\n", deleted_file);
100 if (!g_file_test(deleted_file, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR)) {
101 debug_print("RSSyl: '%s' doesn't exist, ignoring\n", deleted_file);
105 g_file_get_contents(deleted_file, &contents, NULL, &error);
108 g_warning("GError: '%s'\n", error->message);
110 if (contents != NULL) {
111 lines = strsplit_no_copy(contents, '\n');
113 g_warning("Couldn't read '%s', ignoring\n", deleted_file);
114 g_free(deleted_file);
118 g_free(deleted_file);
121 line = g_strsplit(lines[i], ": ", 2);
122 if (line[0] && line[1] && strlen(line[0]) && strlen(line[1])) {
123 if (!strcmp(line[0], "ID")) {
124 ditem = _new_deleted_item();
125 ditem->id = g_strdup(line[1]);
126 } else if (ditem != NULL && !strcmp(line[0], "TITLE")) {
127 ditem->title = g_strdup(line[1]);
128 } else if (ditem != NULL && !strcmp(line[0], "DPUB")) {
129 ditem->date_published = atoi(line[1]);
130 } else if (ditem != NULL && !strcmp(line[0], "DMOD")) {
131 ditem->date_modified = atoi(line[1]);
132 deleted_items = g_slist_prepend(deleted_items, ditem);
144 debug_print("RSSyl: got %d deleted items\n", g_slist_length(deleted_items));
145 return deleted_items;
148 static void _store_one_deleted_item(gpointer data, gpointer user_data)
150 RDeletedItem *ditem = (RDeletedItem *)data;
151 FILE *f = (FILE *)user_data;
152 gboolean err = FALSE;
154 if (ditem == NULL || ditem->id == NULL)
162 ditem->id, ditem->title,
163 ditem->date_published, ditem->date_modified) < 0);
166 debug_print("RSSyl: Error during writing deletion file.\n");
169 static void rssyl_deleted_store_internal(GSList *deleted_items, const gchar *deleted_file)
173 if (g_file_test(deleted_file, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
174 g_remove(deleted_file);
176 if (g_slist_length(deleted_items) == 0)
179 if ((f = g_fopen(deleted_file, "w")) == NULL) {
180 debug_print("RSSyl: Couldn't open '%s', ignoring.\n", deleted_file);
184 g_slist_foreach(deleted_items, (GFunc)_store_one_deleted_item,
188 debug_print("RSSyl: written and closed deletion file\n");
191 void rssyl_deleted_store(RFolderItem *ritem)
195 g_return_if_fail(ritem != NULL);
197 path = _deleted_file_path(ritem);
198 rssyl_deleted_store_internal(ritem->deleted_items, path);
202 /* Creates a FeedItem from a message file and uses the data to add a item
203 * to the list of deleted stuff. */
204 void rssyl_deleted_add(RFolderItem *ritem, gchar *path)
206 FeedItem *fitem = NULL;
207 RDeletedItem *ditem = NULL;
208 GSList *deleted_items = rssyl_deleted_update(ritem);
209 gchar *deleted_file = NULL;
211 if (!(fitem = rssyl_parse_folder_item_file(path)))
214 ditem = _new_deleted_item();
215 ditem->id = g_strdup(feed_item_get_id(fitem));
216 ditem->title = conv_unmime_header(feed_item_get_title(fitem),
218 ditem->date_published = feed_item_get_date_published(fitem);
219 ditem->date_modified = feed_item_get_date_modified(fitem);
221 deleted_items = g_slist_prepend(deleted_items, ditem);
223 deleted_file = _deleted_file_path(ritem);
224 rssyl_deleted_store_internal(deleted_items, deleted_file);
225 g_free(deleted_file);
227 rssyl_deleted_free(deleted_items);
230 static gint _rssyl_deleted_check_func(gconstpointer a, gconstpointer b)
232 RDeletedItem *ditem = (RDeletedItem *)a;
233 FeedItem *fitem = (FeedItem *)b;
235 g_return_val_if_fail(ditem != NULL, -10);
236 g_return_val_if_fail(fitem != NULL, -20);
238 /* Following must match:
240 if (!ditem->id || !feed_item_get_id(fitem) ||
241 strcmp(ditem->id, feed_item_get_id(fitem)))
245 if (!ditem->title || !feed_item_get_title(fitem) ||
246 strcmp(ditem->title, feed_item_get_title(fitem)))
249 /* time of publishing, ... */
250 if (ditem->date_published != -1 &&
251 ditem->date_published != feed_item_get_date_published(fitem))
254 /* and the time of last modification must be greater
255 * (this means that the item was updated since deletion, and possibly
256 * contains new data, so we add it again) */
257 if (ditem->date_modified != -1 &&
258 ditem->date_modified < feed_item_get_date_modified(fitem))
264 /* Returns TRUE if fitem is found among the deleted stuff. */
265 gboolean rssyl_deleted_check(GSList *deleted_items, FeedItem *fitem)
267 if (g_slist_find_custom(deleted_items, (gconstpointer)fitem,
268 _rssyl_deleted_check_func) != NULL)
274 /******** Expiring ********/
275 struct _RDelExpireCtx {
280 typedef struct _RDelExpireCtx RDelExpireCtx;
282 static void _rssyl_deleted_expire_func_f(gpointer data, gpointer user_data)
284 FeedItem *fitem = (FeedItem *)data;
285 RDelExpireCtx *ctx = (RDelExpireCtx *)user_data;
287 /* Following must match:
289 if (!ctx->ditem->id || !feed_item_get_id(fitem) ||
290 strcmp(ctx->ditem->id, feed_item_get_id(fitem)))
294 if (!ctx->ditem->title || !feed_item_get_title(fitem) ||
295 strcmp(ctx->ditem->title, feed_item_get_title(fitem)))
298 /* time of publishing, ... */
299 if (ctx->ditem->date_published != feed_item_get_date_published(fitem))
302 /* and the time of last modification must be greater
303 * (this means that the item was updated since deletion, and possibly
304 * contains new data, so we add it again) */
305 if (ctx->ditem->date_modified != feed_item_get_date_modified(fitem))
311 /* Checks each item in deleted items list against feed and removes it if
312 * it is not found there anymore. */
313 void rssyl_deleted_expire(RFolderItem *ritem, Feed *feed)
315 GSList *d = NULL, *d2;
316 RDelExpireCtx *ctx = NULL;
319 g_return_if_fail(ritem != NULL);
320 g_return_if_fail(feed != NULL);
322 ritem->deleted_items = rssyl_deleted_update(ritem);
324 /* Iterate over all items in the list */
325 d = ritem->deleted_items;
327 ditem = (RDeletedItem *)d->data;
328 ctx = g_new0(RDelExpireCtx, 1);
332 /* Adjust ctx->delete accordingly */
333 feed_foreach_item(feed, _rssyl_deleted_expire_func_f, (gpointer)ctx);
335 /* Remove the item if necessary */
337 debug_print("RSSyl: (DELETED) removing '%s' from list\n", ditem->title);
339 ritem->deleted_items = g_slist_remove_link(ritem->deleted_items, d);
349 /* Write the new list to disk */
350 rssyl_deleted_store(ritem);
352 /* And clean up after myself */
353 rssyl_deleted_free(ritem->deleted_items);