[buffer] Implement buffer deserialization for format=json
Using a ragel machine.
diff --git a/src/hb-buffer-serialize.cc b/src/hb-buffer-serialize.cc
index 0271547..dc47ba7 100644
--- a/src/hb-buffer-serialize.cc
+++ b/src/hb-buffer-serialize.cc
@@ -242,15 +242,48 @@
static hb_bool_t
-_hb_buffer_deserialize_glyphs_json (hb_buffer_t *buffer,
- const char *buf,
- unsigned int buf_len,
- const char **end_ptr,
- hb_font_t *font)
+parse_uint (const char *pp, const char *end, uint32_t *pv)
{
- return false;
+ char buf[32];
+ unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - pp));
+ strncpy (buf, pp, len);
+ buf[len] = '\0';
+
+ char *p = buf;
+ char *pend = p;
+ uint32_t v;
+
+ errno = 0;
+ v = strtol (p, &pend, 10);
+ if (errno || p == pend || pend - p != end - pp)
+ return false;
+
+ *pv = v;
+ return true;
}
+static hb_bool_t
+parse_int (const char *pp, const char *end, int32_t *pv)
+{
+ char buf[32];
+ unsigned int len = MIN (ARRAY_LENGTH (buf) - 1, (unsigned int) (end - pp));
+ strncpy (buf, pp, len);
+ buf[len] = '\0';
+
+ char *p = buf;
+ char *pend = p;
+ int32_t v;
+
+ errno = 0;
+ v = strtol (p, &pend, 10);
+ if (errno || p == pend || pend - p != end - pp)
+ return false;
+
+ *pv = v;
+ return true;
+}
+
+#include "hb-buffer-deserialize-json.hh"
#include "hb-buffer-deserialize-text.hh"
hb_bool_t
