+ if (!result) {
+ g_propagate_error (error, ioerror);
+ }
+ return result;
+
+}
+
+/* Compressed files support */
+#define BZIPCOMMAND "bzip2"
+#define GZIPCOMMAND "gzip"
+#define N_ARGS 4
+#define BUFFER_SIZE 1024
+
+static gchar *
+compression_run (const gchar *uri,
+ EvCompressionType type,
+ gboolean compress,
+ GError **error)
+{
+ gchar *argv[N_ARGS];
+ gchar *uri_dst = NULL;
+ gchar *filename, *filename_dst;
+ gchar *cmd;
+ gint fd, pout;
+
+ if (type == EV_COMPRESSION_NONE)
+ return NULL;
+
+ cmd = g_find_program_in_path ((type == EV_COMPRESSION_BZIP2) ? BZIPCOMMAND : GZIPCOMMAND);
+ if (!cmd)
+ return NULL;
+
+ filename = g_filename_from_uri (uri, NULL, NULL);
+ if (!filename) {
+ g_free (cmd);
+ return NULL;
+ }
+
+ filename_dst = g_build_filename (ev_tmp_dir (), "evinceXXXXXX", NULL);
+ fd = g_mkstemp (filename_dst);
+ if (fd < 0) {
+ g_free (cmd);
+ g_free (filename);
+ g_free (filename_dst);
+ return NULL;
+ }
+
+ argv[0] = cmd;
+ argv[1] = compress ? "-c" : "-cd";
+ argv[2] = filename;
+ argv[3] = NULL;
+
+ if (g_spawn_async_with_pipes (NULL, argv, NULL,
+ G_SPAWN_STDERR_TO_DEV_NULL,
+ NULL, NULL, NULL,
+ NULL, &pout, NULL, error)) {
+ GIOChannel *in, *out;
+ gchar buf[BUFFER_SIZE];
+ GIOStatus read_st, write_st;
+ gsize bytes_read, bytes_written;
+
+ in = g_io_channel_unix_new (pout);
+ g_io_channel_set_encoding (in, NULL, NULL);
+ out = g_io_channel_unix_new (fd);
+ g_io_channel_set_encoding (out, NULL, NULL);
+
+ do {
+ read_st = g_io_channel_read_chars (in, buf,
+ BUFFER_SIZE,
+ &bytes_read,
+ error);
+ if (read_st == G_IO_STATUS_NORMAL) {
+ write_st = g_io_channel_write_chars (out, buf,
+ bytes_read,
+ &bytes_written,
+ error);
+ if (write_st == G_IO_STATUS_ERROR)
+ break;
+ } else if (read_st == G_IO_STATUS_ERROR) {
+ break;
+ }
+ } while (bytes_read > 0);
+
+ g_io_channel_unref (in);
+ g_io_channel_unref (out);
+ }
+
+ close (fd);
+
+ if (*error == NULL) {
+ uri_dst = g_filename_to_uri (filename_dst, NULL, NULL);
+ }
+
+ g_free (cmd);
+ g_free (filename);
+ g_free (filename_dst);
+
+ return uri_dst;
+}
+
+gchar *
+ev_file_uncompress (const gchar *uri,
+ EvCompressionType type,
+ GError **error)
+{
+ g_return_val_if_fail (uri != NULL, NULL);
+
+ return compression_run (uri, type, FALSE, error);
+}
+
+gchar *
+ev_file_compress (const gchar *uri,
+ EvCompressionType type,
+ GError **error)
+{
+ g_return_val_if_fail (uri != NULL, NULL);