2 * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include <libsoup/soup.h>
26 AWeatherCacheDoneCallback callback;
33 * Open a file, creating parent directories if needed
35 static FILE *fopen_p(const gchar *path, const gchar *mode)
37 gchar *parent = g_path_get_dirname(path);
38 if (!g_file_test(parent, G_FILE_TEST_EXISTS))
39 g_mkdir_with_parents(path, 0755);
41 return fopen(path, mode);
44 static void cache_file_cb(SoupSession *session, SoupMessage *message, gpointer _info)
46 cache_file_end_t *info = _info;
47 gchar *uri = soup_uri_to_string(soup_message_get_uri(message), FALSE);
48 g_debug("data: cache_file_cb ([%s]->[%s])", uri, info->local);
50 if (!SOUP_STATUS_IS_SUCCESSFUL(message->status_code)) {
51 g_warning("data: error copying file ([%s]->[%s])", uri, info->local);
53 gint wrote = fwrite(message->response_body->data, 1,
54 message->response_body->length, info->fp);
55 g_debug("data: status=%u wrote=%d/%lld",
57 wrote, message->response_body->length);
59 info->callback(info->local, TRUE, info->user_data);
63 g_object_unref(session);
66 static void do_cache(gchar *uri, gchar *local, gboolean truncate, gchar *reason,
67 AWeatherCacheDoneCallback callback, gpointer user_data)
69 char *name = g_path_get_basename(uri);
70 g_debug("data: do_cache - Caching file %s: %s", name, reason);
73 cache_file_end_t *info = g_malloc0(sizeof(cache_file_end_t));
74 info->callback = callback;
75 info->user_data = user_data;
78 if (truncate) info->fp = fopen_p(local, "w");
79 else info->fp = fopen_p(local, "a");
80 long bytes = ftell(info->fp);
82 SoupSession *session = soup_session_async_new();
83 SoupMessage *message = soup_message_new("GET", uri);
85 g_error("message is null, cannot parse uri");
87 soup_message_headers_set_range(message->request_headers, bytes, -1);
88 soup_session_queue_message(session, message, cache_file_cb, info);
92 * Cache a image from Ridge to the local disk
93 * \param path Path to the Ridge file, starting after /ridge/
94 * \return The local path to the cached image
96 void cache_file(char *base, char *path, AWeatherCacheType update,
97 AWeatherCacheDoneCallback callback, gpointer user_data)
99 gchar *uri = g_strconcat(base, path, NULL);
100 gchar *local = g_build_filename(g_get_user_cache_dir(), PACKAGE, path, NULL);
102 if (update == AWEATHER_REFRESH)
103 return do_cache(uri, local, TRUE, "cache forced",
104 callback, user_data);
106 if (update == AWEATHER_UPDATE)
107 return do_cache(uri, local, FALSE, "attempting updating",
108 callback, user_data);
110 if (update == AWEATHER_ONCE && !g_file_test(local, G_FILE_TEST_EXISTS))
111 return do_cache(uri, local, TRUE, "local does not exist",
112 callback, user_data);
114 /* No nead to cache, run the callback now and clean up */
115 callback(local, FALSE, user_data);