+_gzfile_maybe_filter (GMimeStream *file_stream)
+{
+ char buf[4];
+ int bytes_read;
+
+ if ((bytes_read = g_mime_stream_read (file_stream, buf, sizeof (buf))) < 0)
+ return NULL;
+
+ if (g_mime_stream_reset (file_stream))
+ return NULL;
+
+ /* check for gzipped input */
+ if (bytes_read >= 2 && buf[0] == 0x1f && (unsigned char) buf[1] == 0x8b) {
+ GMimeStream *gzstream;
+ GMimeFilter *gzfilter;
+
+ gzfilter = g_mime_filter_gzip_new (GMIME_FILTER_GZIP_MODE_UNZIP, 0);
+ if (! gzfilter)
+ return NULL;
+
+ gzstream = g_mime_stream_filter_new (file_stream);
+ if (! gzstream)
+ return NULL;
+
+ /* ignore filter id */
+ (void) g_mime_stream_filter_add ((GMimeStreamFilter *) gzstream, gzfilter);
+ g_object_unref (gzfilter);
+ g_object_unref (file_stream);
+ return gzstream;
+ } else {
+ return file_stream;
+ }
+}
+
+GMimeStream *
+g_mime_stream_gzfile_new (int fd)
+{
+ GMimeStream *file_stream;
+
+ file_stream = g_mime_stream_fs_new (fd);
+ if (! file_stream)
+ return NULL;
+
+ return _gzfile_maybe_filter (file_stream);
+}
+
+GMimeStream *
+g_mime_stream_gzfile_open (const char *filename)
+{
+ GMimeStream *file_stream;
+
+ file_stream = g_mime_stream_fs_open (filename, 0, 0, NULL);
+ if (! file_stream)
+ return NULL;
+
+ return _gzfile_maybe_filter (file_stream);
+}
+
+GMimeStream *
+g_mime_stream_stdout_new ()