Fix language tag reading and writing.

git-svn-id: http://svn.drobilla.net/serd/trunk@18 490d8e77-9747-427b-9fa3-0b8f29cee8a0

src/reader.c

@@ -735,7 +735,7 @@ read_language(SerdReader parser)
 		return 0;
 	}
 	Ref str = push_string(parser, "", 1);
-	push_byte(parser, str, start);
+	push_byte(parser, str, eat_byte(parser, start));
 	uint8_t c;
 	while ((c = peek_byte(parser)) && in_range(c, 'a', 'z')) {
 		push_byte(parser, str, eat_byte(parser, c));

src/serdi.c

@@ -163,7 +163,7 @@ main(int argc, char** argv)
 	FILE*       out_fd = stdout;
 
 	if (!in_fd) {
-		fprintf(stderr, "failed to open file\n");
+		fprintf(stderr, "failed to open file %s\n", in_filename);
 		return 1;
 	}
 

src/write.c

@@ -165,9 +165,8 @@ serd_write_node(SerdWriter        writer,
 		serd_write_ascii(str->buf, str->n_bytes - 1, fd, '"');
 		fwrite("\"", 1, 1, fd);
 		if (lang) {
-			fwrite("@\"", 1, 2, fd);
+			fwrite("@", 1, 1, fd);
 			fwrite(lang->buf, 1, lang->n_bytes - 1, fd);
-			fwrite("\"", 1, 1, fd);
 		} else if (datatype) {
 			fwrite("^^", 1, 2, fd);
 			serd_write_node(writer, URI, datatype, NULL, NULL);