Roll HarfBuzz to 0.9.32

third_party/harfbuzz-ng/src/hb-buffer.h

 /*
  * Copyright © 1998-2004  David Turner and Werner Lemberg
  * Copyright © 2004,2007,2009  Red Hat, Inc.
  * Copyright © 2011,2012  Google, Inc.
  *
  *  This is part of HarfBuzz, a text shaping library.
  *
  * Permission is hereby granted, without written agreement and without
  * license or royalty fees, to use, copy, modify, and distribute this
  * software and its documentation for any purpose, provided that the
@@ skipping 168 matching lines @@
 } hb_buffer_flags_t;
 
 void
 hb_buffer_set_flags (hb_buffer_t       *buffer,
                      hb_buffer_flags_t  flags);
 
 hb_buffer_flags_t
 hb_buffer_get_flags (hb_buffer_t *buffer);
 
 
+
+#define HB_BUFFER_REPLACEMENT_CODEPOINT_DEFAULT 0xFFFDu
+
+/* Sets codepoint used to replace invalid UTF-8/16/32 entries.
+ * Default is 0xFFFDu. */
+void
+hb_buffer_set_replacement_codepoint (hb_buffer_t    *buffer,
+                                     hb_codepoint_t  replacement);
+
+hb_codepoint_t
+hb_buffer_get_replacement_codepoint (hb_buffer_t    *buffer);
+
+
 /* Resets the buffer.  Afterwards it's as if it was just created,
  * except that it has a larger buffer allocated perhaps... */
 void
 hb_buffer_reset (hb_buffer_t *buffer);
 
-/* Like reset, but does NOT clear unicode_funcs. */
+/* Like reset, but does NOT clear unicode_funcs and replacement_codepoint. */
 void
 hb_buffer_clear_contents (hb_buffer_t *buffer);
 
 /* Returns false if allocation failed */
 hb_bool_t
 hb_buffer_pre_allocate (hb_buffer_t  *buffer,
                         unsigned int  size);
 
 
 /* Returns false if allocation has failed before */
@@ skipping 28 matching lines @@
                      unsigned int    item_offset,
                      int             item_length);
 
 void
 hb_buffer_add_utf32 (hb_buffer_t    *buffer,
                      const uint32_t *text,
                      int             text_length,
                      unsigned int    item_offset,
                      int             item_length);
 
+/* Like add_utf32 but does NOT check for invalid Unicode codepoints. */
+void
+hb_buffer_add_codepoints (hb_buffer_t          *buffer,
+                          const hb_codepoint_t *text,
+                          int                   text_length,
+                          unsigned int          item_offset,
+                          int                   item_length);
+
 
 /* Clears any new items added at the end */
 hb_bool_t
 hb_buffer_set_length (hb_buffer_t  *buffer,
                       unsigned int  length);
 
 /* Return value valid as long as buffer not modified */
 unsigned int
 hb_buffer_get_length (hb_buffer_t *buffer);
 
@@ skipping 61 matching lines @@
                               const char *buf,
                               int buf_len, /* -1 means nul-terminated */
                               const char **end_ptr, /* May be NULL */
                               hb_font_t *font, /* May be NULL */
                               hb_buffer_serialize_format_t format);
 
 
 HB_END_DECLS
 
 #endif /* HB_BUFFER_H */