X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=src%2Fdata.c;h=d57a8c713c706b8a4fbadfe95d69413860ad5f34;hb=678a6fa08ee7cdc98a631b9b6a6fef87be63deab;hp=c36556d7644bd453810a732ffa11982a42bea82f;hpb=8efa2df296f672505211b4360c10279d9d57be22;p=aweather

diff --git a/src/data.c b/src/data.c
index c36556d..d57a8c7 100644
--- a/src/data.c
+++ b/src/data.c
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include <config.h>
 #include <glib.h>
 #include <gio/gio.h>
@@ -6,55 +23,106 @@
 
 typedef struct {
 	AWeatherCacheDoneCallback callback;
-	gchar *src;
-	gchar *dst;
+	GFile *src;
+	GFile *dst;
 	gchar *user_data;
 } cache_file_end_t;
 
+static goffset g_file_get_size(GFile *file)
+{
+	GError *error = NULL;
+	GFileInfo *info = g_file_query_info(file,
+			G_FILE_ATTRIBUTE_STANDARD_SIZE, 0, NULL, &error);
+	if (error){
+		g_warning("unable to get file size: %s", error->message);
+		g_error_free(error);
+	}
+	goffset size = g_file_info_get_size(info);
+	g_file_info_remove_attribute(info, G_FILE_ATTRIBUTE_STANDARD_SIZE);
+	g_object_unref(info);
+	return size;
+}
+
 static void cache_file_cb(GObject *source_object, GAsyncResult *res, gpointer _info)
 {
+	g_debug("data: cache_file_cb");
 	cache_file_end_t *info = _info;
+	char   *url   = g_file_get_path(info->src);
+	char   *local = g_file_get_path(info->dst);
 	GError *error = NULL;
 	g_file_copy_finish(G_FILE(source_object), res, &error);
 	if (error) {
-		g_message("error copying file ([%s]->[%s]): %s",
-			info->src, info->dst, error->message);
+		g_warning("data: error copying file ([%s]->[%s]): %s",
+			url, local, error->message);
+		g_error_free(error);
 	} else {
-		info->callback(info->dst, info->user_data);
+		info->callback(local, TRUE, info->user_data);
 	}
-	g_free(info->src);
-	g_free(info->dst);
+	g_object_unref(info->src);
+	g_object_unref(info->dst);
 	g_free(info);
+	g_free(url);
+	g_free(local);
 }
 
-/**
+static void do_cache(GFile *src, GFile *dst, char *reason,
+		AWeatherCacheDoneCallback callback, gpointer user_data)
+{
+	char *name = g_file_get_basename(dst);
+	g_debug("data: do_cache - Caching file %s: %s", name, reason);
+	g_free(name);
+
+	GFile *parent = g_file_get_parent(dst);
+	if (!g_file_query_exists(parent, NULL)) {
+		char *path = g_file_get_path(parent);
+		g_mkdir_with_parents(path, 0755);
+		g_free(path);
+	}
+	g_object_unref(parent);
+
+	cache_file_end_t *info = g_malloc0(sizeof(cache_file_end_t));
+	info->callback  = callback;
+	info->src       = src;
+	info->dst       = dst;
+	info->user_data = user_data;
+	g_file_copy_async(src, dst,
+		G_FILE_COPY_OVERWRITE,   // GFileCopyFlags flags,
+		G_PRIORITY_DEFAULT_IDLE, // int io_priority,
+		NULL,                    // GCancellable *cancellable,
+		NULL,                    // GFileProgressCallback progress_callback,
+		NULL,                    // gpointer progress_callback_data,
+		cache_file_cb,           // GAsyncReadyCallback callback,
+		info);                   // gpointer user_data
+	return;
+}
+
+/*
  * Cache a image from Ridge to the local disk
  * \param  path  Path to the Ridge file, starting after /ridge/
  * \return The local path to the cached image
  */
-void cache_file(char *base, char *path, AWeatherCacheDoneCallback callback, gpointer user_data)
+void cache_file(char *base, char *path, AWeatherPolicyType update,
+		AWeatherCacheDoneCallback callback, gpointer user_data)
 {
 	gchar *url   = g_strconcat(base, path, NULL);
 	gchar *local = g_build_filename(g_get_user_cache_dir(), PACKAGE, path, NULL);
-	if (g_file_test(local, G_FILE_TEST_EXISTS)) {
-		callback(local, user_data);
-	} else {
-		if (!g_file_test(g_path_get_dirname(local), G_FILE_TEST_IS_DIR))
-			g_mkdir_with_parents(g_path_get_dirname(local), 0755);
-		cache_file_end_t *info = g_malloc0(sizeof(cache_file_end_t));
-		info->callback  = callback;
-		info->src       = url;
-		info->dst       = local;
-		info->user_data = user_data;
-		GFile *src = g_file_new_for_uri(url);
-		GFile *dst = g_file_new_for_path(local);
-		g_file_copy_async(src, dst,
-			G_FILE_COPY_OVERWRITE, // GFileCopyFlags flags,
-			0,                     // int io_priority,
-			NULL,                  // GCancellable *cancellable,
-			NULL,                  // GFileProgressCallback progress_callback,
-			NULL,                  // gpointer progress_callback_data,
-			cache_file_cb,         // GAsyncReadyCallback callback,
-			info);                 // gpointer user_data
-	}
+	GFile *src   = g_file_new_for_uri(url);
+	GFile *dst   = g_file_new_for_path(local);
+
+	if (update == AWEATHER_ALWAYS)
+		return do_cache(src, dst, "cache forced", callback, user_data);
+
+	if (!g_file_test(local, G_FILE_TEST_EXISTS))
+		return do_cache(src, dst, "local does not exist", callback, user_data);
+
+	if (update == AWEATHER_AUTOMATIC && g_file_get_size(src) != g_file_get_size(dst))
+		return do_cache(src, dst, "size mismatch", callback, user_data);
+
+	/* No nead to cache, run the callback now and clean up */
+	callback(local, FALSE, user_data);
+	g_object_unref(src);
+	g_object_unref(dst);
+	g_free(local);
+	g_free(url);
+	return;
 }