Add buffer serialization / deserialization API
Two output formats for now: TEXT, and JSON. For example:
hb-shape --output-format=json
Deserialization API is added, but not implemented yet.
diff --git a/src/hb-buffer.h b/src/hb-buffer.h
index 8e1690d..ba9cd1d 100644
--- a/src/hb-buffer.h
+++ b/src/hb-buffer.h
@@ -36,6 +36,7 @@
#include "hb-common.h"
#include "hb-unicode.h"
+#include "hb-font.h"
HB_BEGIN_DECLS
@@ -238,6 +239,47 @@
*/
+typedef enum {
+ HB_BUFFER_SERIALIZE_FLAGS_DEFAULT = 0x00000000,
+ HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS = 0x00000001,
+ HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS = 0x00000002,
+ HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES = 0x00000004
+} hb_buffer_serialize_flags_t;
+
+typedef enum {
+ HB_BUFFER_SERIALIZE_FORMAT_TEXT = HB_TAG('T','E','X','T'),
+ HB_BUFFER_SERIALIZE_FORMAT_JSON = HB_TAG('J','S','O','N'),
+ HB_BUFFER_SERIALIZE_FORMAT_INVALID = HB_TAG_NONE
+} hb_buffer_serialize_format_t;
+
+/* len=-1 means str is NUL-terminated. */
+hb_buffer_serialize_format_t
+hb_buffer_serialize_format_from_string (const char *str, int len);
+
+const char *
+hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format);
+
+/* Returns number of items, starting at start, that were serialized. */
+unsigned int
+hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
+ unsigned int start,
+ unsigned int end,
+ char *buf,
+ unsigned int buf_size,
+ unsigned int *buf_consumed,
+ hb_font_t *font, /* May be NULL */
+ hb_buffer_serialize_format_t format,
+ hb_buffer_serialize_flags_t flags);
+
+hb_bool_t
+hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
+ const char *buf,
+ unsigned int buf_len,
+ unsigned int *buf_consumed,
+ hb_font_t *font, /* May be NULL */
+ hb_buffer_serialize_format_t format);
+
+
HB_END_DECLS
#endif /* HB_BUFFER_H */
