-/* Currently the wire type related stuff is kept hidden from
- * callbacks. They shouldn't need it. It's better for performance
- * to just assume the correct type and fail safely on corrupt message.
- */
+bool checkreturn pb_decode_tag(pb_istream_t *stream, pb_wire_type_t *wire_type, int *tag, bool *eof)
+{
+ uint32_t temp;
+ *eof = false;
+ *wire_type = 0;
+ *tag = 0;
+
+ if (!pb_decode_varint32(stream, &temp))
+ {
+ if (stream->bytes_left == 0)
+ *eof = true;
+
+ return false;
+ }
+
+ if (temp == 0)
+ {
+ *eof = true; /* Special feature: allow 0-terminated messages. */
+ return false;
+ }
+
+ *tag = temp >> 3;
+ *wire_type = (pb_wire_type_t)(temp & 7);
+ return true;
+}