diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-buffer.cc')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-buffer.cc | 81 |
1 files changed, 59 insertions, 22 deletions
diff --git a/thirdparty/harfbuzz/src/hb-buffer.cc b/thirdparty/harfbuzz/src/hb-buffer.cc index 2272ecf09b..57a5ae03ed 100644 --- a/thirdparty/harfbuzz/src/hb-buffer.cc +++ b/thirdparty/harfbuzz/src/hb-buffer.cc @@ -51,7 +51,7 @@ * Checks the equality of two #hb_segment_properties_t's. * * Return value: - * %true if all properties of @a equal those of @b, %false otherwise. + * `true` if all properties of @a equal those of @b, `false` otherwise. * * Since: 0.9.7 **/ @@ -387,9 +387,11 @@ hb_buffer_t::clear_positions () hb_memset (pos, 0, sizeof (pos[0]) * len); } -void +bool hb_buffer_t::sync () { + bool ret = false; + assert (have_output); assert (idx <= len); @@ -403,12 +405,39 @@ hb_buffer_t::sync () info = out_info; } len = out_len; + ret = true; reset: have_output = false; out_len = 0; out_info = info; idx = 0; + + return ret; +} + +int +hb_buffer_t::sync_so_far () +{ + bool had_output = have_output; + unsigned out_i = out_len; + unsigned i = idx; + unsigned old_idx = idx; + + if (sync ()) + idx = out_i; + else + idx = i; + + if (had_output) + { + have_output = true; + out_len = idx; + } + + assert (idx <= len); + + return idx - old_idx; } bool @@ -643,9 +672,9 @@ DEFINE_NULL_INSTANCE (hb_buffer_t) = * Return value: (transfer full): * A newly allocated #hb_buffer_t with a reference count of 1. The initial * reference count should be released with hb_buffer_destroy() when you are done - * using the #hb_buffer_t. This function never returns %NULL. If memory cannot + * using the #hb_buffer_t. This function never returns `NULL`. If memory cannot * be allocated, a special #hb_buffer_t object will be returned on which - * hb_buffer_allocation_successful() returns %false. + * hb_buffer_allocation_successful() returns `false`. * * Since: 0.9.2 **/ @@ -775,7 +804,7 @@ hb_buffer_destroy (hb_buffer_t *buffer) * * Attaches a user-data key/data pair to the specified buffer. * - * Return value: %true if success, %false otherwise + * Return value: `true` if success, `false` otherwise * * Since: 0.9.2 **/ @@ -802,7 +831,7 @@ hb_buffer_set_user_data (hb_buffer_t *buffer, * Since: 0.9.2 **/ void * -hb_buffer_get_user_data (hb_buffer_t *buffer, +hb_buffer_get_user_data (const hb_buffer_t *buffer, hb_user_data_key_t *key) { return hb_object_get_user_data (buffer, key); @@ -1278,7 +1307,7 @@ hb_buffer_clear_contents (hb_buffer_t *buffer) * Pre allocates memory for @buffer to fit at least @size number of items. * * Return value: - * %true if @buffer memory allocation succeeded, %false otherwise + * `true` if @buffer memory allocation succeeded, `false` otherwise * * Since: 0.9.2 **/ @@ -1295,7 +1324,7 @@ hb_buffer_pre_allocate (hb_buffer_t *buffer, unsigned int size) * Check if allocating memory for the buffer succeeded. * * Return value: - * %true if @buffer memory allocation succeeded, %false otherwise. + * `true` if @buffer memory allocation succeeded, `false` otherwise. * * Since: 0.9.2 **/ @@ -1340,7 +1369,7 @@ hb_buffer_add (hb_buffer_t *buffer, * end. * * Return value: - * %true if @buffer memory allocation succeeded, %false otherwise. + * `true` if @buffer memory allocation succeeded, `false` otherwise. * * Since: 0.9.2 **/ @@ -1426,7 +1455,7 @@ hb_buffer_get_glyph_infos (hb_buffer_t *buffer, * If buffer did not have positions before, the positions will be * initialized to zeros, unless this function is called from * within a buffer message callback (see hb_buffer_set_message_func()), - * in which case %NULL is returned. + * in which case `NULL` is returned. * * Return value: (transfer none) (array length=length): * The @buffer glyph position array. @@ -1461,7 +1490,7 @@ hb_buffer_get_glyph_positions (hb_buffer_t *buffer, * and cleared of position data when hb_buffer_clear_contents() is called. * * Return value: - * %true if the @buffer has position array, %false otherwise. + * `true` if the @buffer has position array, `false` otherwise. * * Since: 2.7.3 **/ @@ -1645,10 +1674,10 @@ hb_buffer_add_utf (hb_buffer_t *buffer, * @buffer: An #hb_buffer_t * @text: (array length=text_length) (element-type uint8_t): An array of UTF-8 * characters to append. - * @text_length: The length of the @text, or -1 if it is %NULL terminated. + * @text_length: The length of the @text, or -1 if it is `NULL` terminated. * @item_offset: The offset of the first character to add to the @buffer. * @item_length: The number of characters to add to the @buffer, or -1 for the - * end of @text (assuming it is %NULL terminated). + * end of @text (assuming it is `NULL` terminated). * * See hb_buffer_add_codepoints(). * @@ -1671,10 +1700,10 @@ hb_buffer_add_utf8 (hb_buffer_t *buffer, * hb_buffer_add_utf16: * @buffer: An #hb_buffer_t * @text: (array length=text_length): An array of UTF-16 characters to append - * @text_length: The length of the @text, or -1 if it is %NULL terminated + * @text_length: The length of the @text, or -1 if it is `NULL` terminated * @item_offset: The offset of the first character to add to the @buffer * @item_length: The number of characters to add to the @buffer, or -1 for the - * end of @text (assuming it is %NULL terminated) + * end of @text (assuming it is `NULL` terminated) * * See hb_buffer_add_codepoints(). * @@ -1697,10 +1726,10 @@ hb_buffer_add_utf16 (hb_buffer_t *buffer, * hb_buffer_add_utf32: * @buffer: An #hb_buffer_t * @text: (array length=text_length): An array of UTF-32 characters to append - * @text_length: The length of the @text, or -1 if it is %NULL terminated + * @text_length: The length of the @text, or -1 if it is `NULL` terminated * @item_offset: The offset of the first character to add to the @buffer * @item_length: The number of characters to add to the @buffer, or -1 for the - * end of @text (assuming it is %NULL terminated) + * end of @text (assuming it is `NULL` terminated) * * See hb_buffer_add_codepoints(). * @@ -1724,10 +1753,10 @@ hb_buffer_add_utf32 (hb_buffer_t *buffer, * @buffer: An #hb_buffer_t * @text: (array length=text_length) (element-type uint8_t): an array of UTF-8 * characters to append - * @text_length: the length of the @text, or -1 if it is %NULL terminated + * @text_length: the length of the @text, or -1 if it is `NULL` terminated * @item_offset: the offset of the first character to add to the @buffer * @item_length: the number of characters to add to the @buffer, or -1 for the - * end of @text (assuming it is %NULL terminated) + * end of @text (assuming it is `NULL` terminated) * * Similar to hb_buffer_add_codepoints(), but allows only access to first 256 * Unicode code points that can fit in 8-bit strings. @@ -1750,10 +1779,10 @@ hb_buffer_add_latin1 (hb_buffer_t *buffer, * hb_buffer_add_codepoints: * @buffer: a #hb_buffer_t to append characters to. * @text: (array length=text_length): an array of Unicode code points to append. - * @text_length: the length of the @text, or -1 if it is %NULL terminated. + * @text_length: the length of the @text, or -1 if it is `NULL` terminated. * @item_offset: the offset of the first code point to add to the @buffer. * @item_length: the number of code points to add to the @buffer, or -1 for the - * end of @text (assuming it is %NULL terminated). + * end of @text (assuming it is `NULL` terminated). * * Appends characters from @text array to @buffer. The @item_offset is the * position of the first character from @text that will be appended, and @@ -2090,8 +2119,16 @@ hb_buffer_set_message_func (hb_buffer_t *buffer, bool hb_buffer_t::message_impl (hb_font_t *font, const char *fmt, va_list ap) { + assert (!have_output || (out_info == info && out_len == idx)); + + message_depth++; + char buf[100]; vsnprintf (buf, sizeof (buf), fmt, ap); - return (bool) this->message_func (this, font, buf, this->message_data); + bool ret = (bool) this->message_func (this, font, buf, this->message_data); + + message_depth--; + + return ret; } #endif |