Cache avatars and RequestAvatars only when needed.

2007-09-26  Xavier Claessens  <xclaesse@gmail.com>

	* libempathy/empathy-utils.c:
	* libempathy/empathy-utils.h:
	* libempathy/empathy-avatar.c:
	* libempathy/empathy-avatar.h:
	* libempathy/empathy-contact-factory.c: Cache avatars and RequestAvatars
	only when needed.


svn path=/trunk/; revision=320

1 files changed, 98 insertions, 8 deletions

diff --git a/libempathy/empathy-avatar.c b/libempathy/empathy-avatar.c
index 425f23f55..e08dd28c4 100644
--- a/libempathy/empathy-avatar.c
+++ b/libempathy/empathy-avatar.c
@@ -24,6 +24,8 @@
 #include "config.h"
 
 #include "empathy-avatar.h"
+#include "empathy-utils.h"
+#include "empathy-debug.h"
 
 #define DEBUG_DOMAIN "Avatar"
 
@@ -41,26 +43,113 @@ empathy_avatar_get_type (void)
 	return type_id;
 }
 
-EmpathyAvatar *
-empathy_avatar_new (guchar *data,
-		   gsize   len,
-		   gchar  *format)
+static gchar *
+avatar_get_filename (const gchar *token)
 {
-	EmpathyAvatar *avatar;
+	gchar *avatar_path;
+	gchar *avatar_file;
+	gchar *token_escaped;
 
-	g_return_val_if_fail (data != NULL, NULL);
-	g_return_val_if_fail (len > 0, NULL);
-	g_return_val_if_fail (format != NULL, NULL);
+	avatar_path = g_build_filename (g_get_home_dir (),
+					".gnome2",
+					PACKAGE_NAME,
+					"avatars",
+					NULL);
+	g_mkdir_with_parents (avatar_path, 0700);
+
+	token_escaped = empathy_escape_as_identifier (token);
+	avatar_file = g_build_filename (avatar_path, token_escaped, NULL);
+
+	g_free (token_escaped);
+	g_free (avatar_path);
+
+	return avatar_file;
+}
+
+static EmpathyAvatar *
+avatar_new (const guchar *data,
+	    const gsize   len,
+	    const gchar  *format,
+	    const gchar  *token)
+{
+	EmpathyAvatar *avatar;
 
 	avatar = g_slice_new0 (EmpathyAvatar);
 	avatar->data = g_memdup (data, len);
 	avatar->len = len;
 	avatar->format = g_strdup (format);
+	avatar->token = g_strdup (token);
 	avatar->refcount = 1;
 
 	return avatar;
 }
 
+EmpathyAvatar *
+empathy_avatar_new (const guchar *data,
+		    const gsize   len,
+		    const gchar  *format,
+		    const gchar  *token)
+{
+	EmpathyAvatar *avatar;
+	gchar         *filename;
+	GError        *error = NULL;
+
+	g_return_val_if_fail (data != NULL, NULL);
+	g_return_val_if_fail (len > 0, NULL);
+	g_return_val_if_fail (format != NULL, NULL);
+	g_return_val_if_fail (!G_STR_EMPTY (token), NULL);
+
+	avatar = avatar_new (data, len, format, token);
+
+	/* Save to cache if not yet in it */
+	filename = avatar_get_filename (token);
+	if (!g_file_test (filename, G_FILE_TEST_EXISTS)) {
+		if (!g_file_set_contents (filename, data, len, &error)) {
+			empathy_debug (DEBUG_DOMAIN,
+				       "Failed to save avatar in cache: %s",
+				       error ? error->message : "No error given");
+			g_clear_error (&error);
+		} else {
+			empathy_debug (DEBUG_DOMAIN, "Avatar saved to %s", filename);
+		}
+	}
+	g_free (filename);
+
+	return avatar;
+}
+
+EmpathyAvatar *
+empathy_avatar_new_from_cache (const gchar *token)
+{
+	EmpathyAvatar *avatar = NULL;
+	gchar         *filename;
+	gchar         *data = NULL;
+	gsize          len;
+	GError        *error = NULL;
+
+	g_return_val_if_fail (!G_STR_EMPTY (token), NULL);
+
+	/* Load the avatar from file if it exists */
+	filename = avatar_get_filename (token);
+	if (g_file_test (filename, G_FILE_TEST_EXISTS)) {
+		if (!g_file_get_contents (filename, &data, &len, &error)) {
+			empathy_debug (DEBUG_DOMAIN,
+				       "Failed to load avatar from cache: %s",
+				       error ? error->message : "No error given");
+			g_clear_error (&error);
+		}
+	}
+
+	if (data) {
+		empathy_debug (DEBUG_DOMAIN, "Avatar loaded from %s", filename);
+		avatar = avatar_new (data, len, NULL, token);
+	}
+
+	g_free (filename);
+
+	return avatar;
+}
+
 void
 empathy_avatar_unref (EmpathyAvatar *avatar)
 {
@@ -70,6 +159,7 @@ empathy_avatar_unref (EmpathyAvatar *avatar)
 	if (avatar->refcount == 0) {
 		g_free (avatar->data);
 		g_free (avatar->format);
+		g_free (avatar->token);
 		g_slice_free (EmpathyAvatar, avatar);
 	}
 }