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);
112 if (contents != NULL) {
113 lines = strsplit_no_copy(contents, '\n');
115 g_warning("Couldn't read '%s', ignoring\n", deleted_file);
116 g_free(deleted_file);
120 g_free(deleted_file);
123 line = g_strsplit(lines[i], ": ", 2);
124 if (line[0] && line[1] && strlen(line[0]) && strlen(line[1])) {
125 if (!strcmp(line[0], "ID")) {
126 ditem = _new_deleted_item();
127 ditem->id = g_strdup(line[1]);
128 } else if (ditem != NULL && !strcmp(line[0], "TITLE")) {
129 ditem->title = g_strdup(line[1]);
130 } else if (ditem != NULL && !strcmp(line[0], "DPUB")) {
131 ditem->date_published = atoi(line[1]);
132 } else if (ditem != NULL && !strcmp(line[0], "DMOD")) {
133 ditem->date_modified = atoi(line[1]);
134 deleted_items = g_slist_prepend(deleted_items, ditem);
146 debug_print("RSSyl: got %d deleted items\n", g_slist_length(deleted_items));
147 return deleted_items;
150 static void _store_one_deleted_item(gpointer data, gpointer user_data)
152 RDeletedItem *ditem = (RDeletedItem *)data;
153 FILE *f = (FILE *)user_data;
154 gboolean err = FALSE;
156 if (ditem == NULL || ditem->id == NULL)
164 ditem->id, ditem->title,
165 ditem->date_published, ditem->date_modified) < 0);
168 debug_print("RSSyl: Error during writing deletion file.\n");
171 static void rssyl_deleted_store_internal(GSList *deleted_items, const gchar *deleted_file)
175 if (g_file_test(deleted_file, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR)) {
176 if (g_remove(deleted_file) != 0) {
177 debug_print("RSSyl: Oops, couldn't delete '%s', bailing out\n",
183 if (g_slist_length(deleted_items) == 0)
186 if ((f = g_fopen(deleted_file, "w")) == NULL) {
187 debug_print("RSSyl: Couldn't open '%s', bailing out.\n", deleted_file);
191 g_slist_foreach(deleted_items, (GFunc)_store_one_deleted_item,
195 debug_print("RSSyl: written and closed deletion file\n");
198 void rssyl_deleted_store(RFolderItem *ritem)
202 g_return_if_fail(ritem != NULL);
204 path = _deleted_file_path(ritem);
205 rssyl_deleted_store_internal(ritem->deleted_items, path);
209 /* Creates a FeedItem from a message file and uses the data to add a item
210 * to the list of deleted stuff. */
211 void rssyl_deleted_add(RFolderItem *ritem, gchar *path)
213 FeedItem *fitem = NULL;
214 RDeletedItem *ditem = NULL;
215 GSList *deleted_items = rssyl_deleted_update(ritem);
216 gchar *deleted_file = NULL;
218 if (!(fitem = rssyl_parse_folder_item_file(path)))
221 ditem = _new_deleted_item();
222 ditem->id = g_strdup(feed_item_get_id(fitem));
223 ditem->title = conv_unmime_header(feed_item_get_title(fitem),
225 ditem->date_published = feed_item_get_date_published(fitem);
226 ditem->date_modified = feed_item_get_date_modified(fitem);
228 deleted_items = g_slist_prepend(deleted_items, ditem);
230 deleted_file = _deleted_file_path(ritem);
231 rssyl_deleted_store_internal(deleted_items, deleted_file);
232 g_free(deleted_file);
234 rssyl_deleted_free(deleted_items);
235 feed_item_free(fitem);
238 static gint _rssyl_deleted_check_func(gconstpointer a, gconstpointer b)
240 RDeletedItem *ditem = (RDeletedItem *)a;
241 FeedItem *fitem = (FeedItem *)b;
243 g_return_val_if_fail(ditem != NULL, -10);
244 g_return_val_if_fail(fitem != NULL, -20);
246 /* Following must match:
248 if (!ditem->id || !feed_item_get_id(fitem) ||
249 strcmp(ditem->id, feed_item_get_id(fitem)))
253 if (!ditem->title || !feed_item_get_title(fitem) ||
254 strcmp(ditem->title, feed_item_get_title(fitem)))
257 /* time of publishing, ... */
258 if (ditem->date_published != -1 &&
259 ditem->date_published != feed_item_get_date_published(fitem))
262 /* and the time of last modification must be greater
263 * (this means that the item was updated since deletion, and possibly
264 * contains new data, so we add it again) */
265 if (ditem->date_modified != -1 &&
266 ditem->date_modified < feed_item_get_date_modified(fitem))
272 /* Returns TRUE if fitem is found among the deleted stuff. */
273 gboolean rssyl_deleted_check(GSList *deleted_items, FeedItem *fitem)
275 if (g_slist_find_custom(deleted_items, (gconstpointer)fitem,
276 _rssyl_deleted_check_func) != NULL)
282 /******** Expiring ********/
283 struct _RDelExpireCtx {
288 typedef struct _RDelExpireCtx RDelExpireCtx;
290 static void _rssyl_deleted_expire_func_f(gpointer data, gpointer user_data)
292 FeedItem *fitem = (FeedItem *)data;
293 RDelExpireCtx *ctx = (RDelExpireCtx *)user_data;
295 /* Following must match:
297 if (!ctx->ditem->id || !feed_item_get_id(fitem) ||
298 strcmp(ctx->ditem->id, feed_item_get_id(fitem)))
302 if (!ctx->ditem->title || !feed_item_get_title(fitem) ||
303 strcmp(ctx->ditem->title, feed_item_get_title(fitem)))
306 /* time of publishing, ... */
307 if (ctx->ditem->date_published != feed_item_get_date_published(fitem))
310 /* and the time of last modification must be greater
311 * (this means that the item was updated since deletion, and possibly
312 * contains new data, so we add it again) */
313 if (ctx->ditem->date_modified != feed_item_get_date_modified(fitem))
319 /* Checks each item in deleted items list against feed and removes it if
320 * it is not found there anymore. */
321 void rssyl_deleted_expire(RFolderItem *ritem, Feed *feed)
323 GSList *d = NULL, *d2;
324 RDelExpireCtx *ctx = NULL;
327 g_return_if_fail(ritem != NULL);
328 g_return_if_fail(feed != NULL);
330 ritem->deleted_items = rssyl_deleted_update(ritem);
332 /* Iterate over all items in the list */
333 d = ritem->deleted_items;
335 ditem = (RDeletedItem *)d->data;
336 ctx = g_new0(RDelExpireCtx, 1);
340 /* Adjust ctx->delete accordingly */
341 feed_foreach_item(feed, _rssyl_deleted_expire_func_f, (gpointer)ctx);
343 /* Remove the item if necessary */
345 debug_print("RSSyl: (DELETED) removing '%s' from list\n", ditem->title);
347 ritem->deleted_items = g_slist_remove_link(ritem->deleted_items, d);
357 /* Write the new list to disk */
358 rssyl_deleted_store(ritem);
360 /* And clean up after myself */
361 rssyl_deleted_free(ritem->deleted_items);