1 files changed, 136 insertions, 0 deletions
diff --git a/src/eom-pixbuf-util.c b/src/eom-pixbuf-util.c
new file mode 100644
index 0000000..837bb42
--- /dev/null
+++ b/src/eom-pixbuf-util.c
@@ -0,0 +1,136 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include "eom-pixbuf-util.h"
+
+GSList*
+eom_pixbuf_get_savable_formats (void)
+{
+ GSList *list;
+ GSList *write_list = NULL;
+ GSList *it;
+
+ list = gdk_pixbuf_get_formats ();
+
+ for (it = list; it != NULL; it = it->next) {
+ GdkPixbufFormat *format;
+
+ format = (GdkPixbufFormat*) it->data;
+ if (gdk_pixbuf_format_is_writable (format)) {
+ write_list = g_slist_prepend (write_list, format);
+ }
+ }
+
+ g_slist_free (list);
+ write_list = g_slist_reverse (write_list);
+
+ return write_list;
+}
+
+GdkPixbufFormat*
+eom_pixbuf_get_format_by_suffix (const char *suffix)
+{
+ GSList *list;
+ GSList *it;
+ GdkPixbufFormat *result = NULL;
+
+ g_return_val_if_fail (suffix != NULL, NULL);
+
+ list = gdk_pixbuf_get_formats ();
+
+ for (it = list; (it != NULL) && (result == NULL); it = it->next) {
+ GdkPixbufFormat *format;
+ gchar **extensions;
+ int i;
+
+ format = (GdkPixbufFormat*) it->data;
+
+ extensions = gdk_pixbuf_format_get_extensions (format);
+ for (i = 0; extensions[i] != NULL; i++) {
+ /* g_print ("check extension: %s against %s\n", extensions[i], suffix); */
+ if (g_ascii_strcasecmp (suffix, extensions[i]) == 0) {
+ result = format;
+ break;
+ }
+ }
+
+ g_strfreev (extensions);
+ }
+
+ g_slist_free (list);
+
+ return result;
+}
+
+char*
+eom_pixbuf_get_common_suffix (GdkPixbufFormat *format)
+{
+ char **extensions;
+ int i;
+ char *result = NULL;
+
+ if (format == NULL) return NULL;
+
+ extensions = gdk_pixbuf_format_get_extensions (format);
+ if (extensions[0] == NULL) return NULL;
+
+ /* try to find 3-char suffix first, use the last occurence */
+ for (i = 0; extensions [i] != NULL; i++) {
+ if (strlen (extensions[i]) <= 3) {
+ g_free (result);
+ result = g_ascii_strdown (extensions[i], -1);
+ }
+ }
+
+ /* otherwise take the first one */
+ if (result == NULL) {
+ result = g_ascii_strdown (extensions[0], -1);
+ }
+
+ g_strfreev (extensions);
+
+ return result;
+}
+
+static char*
+get_suffix_from_basename (const char *basename)
+{
+ char *suffix;
+ char *suffix_start;
+ guint len;
+
+ /* FIXME: does this work for all locales? */
+ suffix_start = g_utf8_strrchr (basename, -1, '.');
+
+ if (suffix_start == NULL)
+ return NULL;
+
+ len = strlen (suffix_start) - 1;
+ suffix = g_strndup (suffix_start+1, len);
+
+ return suffix;
+
+}
+
+GdkPixbufFormat *
+eom_pixbuf_get_format (GFile *file)
+{
+ GdkPixbufFormat *format;
+ char *path, *basename, *suffix;
+ g_return_val_if_fail (file != NULL, NULL);
+
+ path = g_file_get_path (file);
+ basename = g_path_get_basename (path);
+ suffix = get_suffix_from_basename (basename);
+
+ format = eom_pixbuf_get_format_by_suffix (suffix);
+
+ g_free (path);
+ g_free (basename);
+ g_free (suffix);
+
+ return format;
+}
+