diff options
Diffstat (limited to 'thirdparty/harfbuzz/src/hb-buffer-serialize.cc')
| -rw-r--r-- | thirdparty/harfbuzz/src/hb-buffer-serialize.cc | 543 |
1 files changed, 469 insertions, 74 deletions
diff --git a/thirdparty/harfbuzz/src/hb-buffer-serialize.cc b/thirdparty/harfbuzz/src/hb-buffer-serialize.cc index bc6c978b38..6539b89640 100644 --- a/thirdparty/harfbuzz/src/hb-buffer-serialize.cc +++ b/thirdparty/harfbuzz/src/hb-buffer-serialize.cc @@ -91,26 +91,26 @@ hb_buffer_serialize_format_to_string (hb_buffer_serialize_format_t format) { switch ((unsigned) format) { - case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return serialize_formats[0]; - case HB_BUFFER_SERIALIZE_FORMAT_JSON: return serialize_formats[1]; + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return serialize_formats[0]; + case HB_BUFFER_SERIALIZE_FORMAT_JSON: return serialize_formats[1]; default: - case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return nullptr; + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: return nullptr; } } static unsigned int _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, - unsigned int start, - unsigned int end, - char *buf, - unsigned int buf_size, - unsigned int *buf_consumed, - hb_font_t *font, - hb_buffer_serialize_flags_t flags) + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_flags_t flags) { hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); hb_glyph_position_t *pos = (flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS) ? - nullptr : hb_buffer_get_glyph_positions (buffer, nullptr); + nullptr : hb_buffer_get_glyph_positions (buffer, nullptr); *buf_consumed = 0; hb_position_t x = 0, y = 0; @@ -125,6 +125,8 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, if (i) *p++ = ','; + else + *p++ = '['; *p++ = '{'; @@ -134,8 +136,9 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, char g[128]; hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g)); *p++ = '"'; - for (char *q = g; *q; q++) { - if (*q == '"') + for (char *q = g; *q; q++) + { + if (unlikely (*q == '"' || *q == '\\')) *p++ = '\\'; *p++ = *q; } @@ -151,16 +154,16 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS)) { p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"dx\":%d,\"dy\":%d", - x+pos[i].x_offset, y+pos[i].y_offset)); + x+pos[i].x_offset, y+pos[i].y_offset)); if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES)) - p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d", - pos[i].x_advance, pos[i].y_advance)); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"ax\":%d,\"ay\":%d", + pos[i].x_advance, pos[i].y_advance)); } if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS) { if (info[i].mask & HB_GLYPH_FLAG_DEFINED) - p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"fl\":%u", info[i].mask & HB_GLYPH_FLAG_DEFINED)); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"fl\":%u", info[i].mask & HB_GLYPH_FLAG_DEFINED)); } if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS) @@ -168,12 +171,14 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, hb_glyph_extents_t extents; hb_font_get_glyph_extents(font, info[i].codepoint, &extents); p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"xb\":%d,\"yb\":%d", - extents.x_bearing, extents.y_bearing)); + extents.x_bearing, extents.y_bearing)); p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"w\":%d,\"h\":%d", - extents.width, extents.height)); + extents.width, extents.height)); } *p++ = '}'; + if (i == end-1) + *p++ = ']'; unsigned int l = p - b; if (buf_size > l) @@ -197,18 +202,71 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer, } static unsigned int +_hb_buffer_serialize_unicode_json (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_flags_t flags) +{ + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); + + *buf_consumed = 0; + for (unsigned int i = start; i < end; i++) + { + char b[1024]; + char *p = b; + + if (i) + *p++ = ','; + else + *p++ = '['; + + *p++ = '{'; + + APPEND ("\"u\":"); + + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",\"cl\":%u", info[i].cluster)); + } + + *p++ = '}'; + + if (i == end-1) + *p++ = ']'; + + unsigned int l = p - b; + if (buf_size > l) + { + memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + + } + + return end - start; +} + +static unsigned int _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, - unsigned int start, - unsigned int end, - char *buf, - unsigned int buf_size, - unsigned int *buf_consumed, - hb_font_t *font, - hb_buffer_serialize_flags_t flags) + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_flags_t flags) { hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); hb_glyph_position_t *pos = (flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS) ? - nullptr : hb_buffer_get_glyph_positions (buffer, nullptr); + nullptr : hb_buffer_get_glyph_positions (buffer, nullptr); *buf_consumed = 0; hb_position_t x = 0, y = 0; @@ -221,9 +279,12 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, if (i) *p++ = '|'; + else + *p++ = '['; if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES)) { + /* TODO Escape delimiters we use. */ hb_font_glyph_to_string (font, info[i].codepoint, p, 128); p += strlen (p); } @@ -237,21 +298,21 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS)) { if (x+pos[i].x_offset || y+pos[i].y_offset) - p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", x+pos[i].x_offset, y+pos[i].y_offset)); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "@%d,%d", x+pos[i].x_offset, y+pos[i].y_offset)); if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_ADVANCES)) { - *p++ = '+'; - p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance)); - if (pos[i].y_advance) - p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance)); + *p++ = '+'; + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%d", pos[i].x_advance)); + if (pos[i].y_advance) + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), ",%d", pos[i].y_advance)); } } if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_FLAGS) { if (info[i].mask & HB_GLYPH_FLAG_DEFINED) - p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "#%X", info[i].mask &HB_GLYPH_FLAG_DEFINED)); + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "#%X", info[i].mask &HB_GLYPH_FLAG_DEFINED)); } if (flags & HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS) @@ -261,6 +322,10 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "<%d,%d,%d,%d>", extents.x_bearing, extents.y_bearing, extents.width, extents.height)); } + if (i == end-1) { + *p++ = ']'; + } + unsigned int l = p - b; if (buf_size > l) { @@ -282,6 +347,51 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, return end - start; } + +static unsigned int +_hb_buffer_serialize_unicode_text (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_flags_t flags) +{ + hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr); + *buf_consumed = 0; + for (unsigned int i = start; i < end; i++) + { + char b[1024]; + char *p = b; + + if (i) + *p++ = '|'; + else + *p++ = '<'; + + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "U+%04X", info[i].codepoint)); + + if (!(flags & HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS)) { + p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "=%u", info[i].cluster)); + } + + if (i == end-1) + *p++ = '>'; + + unsigned int l = p - b; + if (buf_size > l) + { + memcpy (buf, b, l); + buf += l; + buf_size -= l; + *buf_consumed += l; + *buf = '\0'; + } else + return i - start; + } + return end - start; +} + /** * hb_buffer_serialize_glyphs: * @buffer: an #hb_buffer_t buffer. @@ -290,8 +400,8 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to * write serialized buffer into. * @buf_size: the size of @buf. - * @buf_consumed: (out) (allow-none): if not %NULL, will be set to the number of byes written into @buf. - * @font: (allow-none): the #hb_font_t used to shape this buffer, needed to + * @buf_consumed: (out) (optional): if not %NULL, will be set to the number of byes written into @buf. + * @font: (nullable): the #hb_font_t used to shape this buffer, needed to * read glyph names and extents. If %NULL, and empty font will be used. * @format: the #hb_buffer_serialize_format_t to use for formatting the output. * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties @@ -308,6 +418,7 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, * ``` * [uni0651=0@518,0+0|uni0628=0+1897] * ``` + * * - The serialized glyphs are delimited with `[` and `]`. * - Glyphs are separated with `|` * - Each glyph starts with glyph name, or glyph index if @@ -316,12 +427,28 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, * - If #HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS is not set, the #hb_glyph_position_t in the format: * - If both #hb_glyph_position_t.x_offset and #hb_glyph_position_t.y_offset are not 0, `@x_offset,y_offset`. Then, * - `+x_advance`, then `,y_advance` if #hb_glyph_position_t.y_advance is not 0. Then, - * - If #HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS is set, the - * #hb_glyph_extents_t in the format - * `<x_bearing,y_bearing,width,height>` + * - If #HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS is set, the #hb_glyph_extents_t in the format `<x_bearing,y_bearing,width,height>` * * ## json - * TODO. + * A machine-readable, structured format. + * The serialized glyphs will look something like: + * + * ``` + * [{"g":"uni0651","cl":0,"dx":518,"dy":0,"ax":0,"ay":0}, + * {"g":"uni0628","cl":0,"dx":0,"dy":0,"ax":1897,"ay":0}] + * ``` + * + * Each glyph is a JSON object, with the following properties: + * - `g`: the glyph name or glyph index if + * #HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES flag is set. + * - `cl`: #hb_glyph_info_t.cluster if + * #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set. + * - `dx`,`dy`,`ax`,`ay`: #hb_glyph_position_t.x_offset, #hb_glyph_position_t.y_offset, + * #hb_glyph_position_t.x_advance and #hb_glyph_position_t.y_advance + * respectively, if #HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS is not set. + * - `xb`,`yb`,`w`,`h`: #hb_glyph_extents_t.x_bearing, #hb_glyph_extents_t.y_bearing, + * #hb_glyph_extents_t.width and #hb_glyph_extents_t.height respectively if + * #HB_BUFFER_SERIALIZE_FLAG_GLYPH_EXTENTS is set. * * Return value: * The number of serialized items. @@ -330,16 +457,17 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer, **/ 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, - hb_buffer_serialize_format_t format, - hb_buffer_serialize_flags_t flags) + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) { - assert (start <= end && end <= buffer->len); + end = hb_clamp (end, start, buffer->len); + start = hb_min (start, end); unsigned int sconsumed; if (!buf_consumed) @@ -348,8 +476,7 @@ hb_buffer_serialize_glyphs (hb_buffer_t *buffer, if (buf_size) *buf = '\0'; - assert ((!buffer->len && (buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID)) || - (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS)); + buffer->assert_glyphs (); if (!buffer->have_positions) flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS; @@ -364,13 +491,106 @@ hb_buffer_serialize_glyphs (hb_buffer_t *buffer, { case HB_BUFFER_SERIALIZE_FORMAT_TEXT: return _hb_buffer_serialize_glyphs_text (buffer, start, end, - buf, buf_size, buf_consumed, - font, flags); + buf, buf_size, buf_consumed, + font, flags); case HB_BUFFER_SERIALIZE_FORMAT_JSON: return _hb_buffer_serialize_glyphs_json (buffer, start, end, - buf, buf_size, buf_consumed, - font, flags); + buf, buf_size, buf_consumed, + font, flags); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return 0; + + } +} + +/** + * hb_buffer_serialize_unicode: + * @buffer: an #hb_buffer_t buffer. + * @start: the first item in @buffer to serialize. + * @end: the last item in @buffer to serialize. + * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to + * write serialized buffer into. + * @buf_size: the size of @buf. + * @buf_consumed: (out) (optional): if not %NULL, will be set to the number of byes written into @buf. + * @format: the #hb_buffer_serialize_format_t to use for formatting the output. + * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties + * to serialize. + * + * Serializes @buffer into a textual representation of its content, + * when the buffer contains Unicode codepoints (i.e., before shaping). This is + * useful for showing the contents of the buffer, for example during debugging. + * There are currently two supported serialization formats: + * + * ## text + * A human-readable, plain text format. + * The serialized codepoints will look something like: + * + * ``` + * <U+0651=0|U+0628=1> + * ``` + * + * - Glyphs are separated with `|` + * - Unicode codepoints are expressed as zero-padded four (or more) + * digit hexadecimal numbers preceded by `U+` + * - If #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set, the cluster + * will be indicated with a `=` then #hb_glyph_info_t.cluster. + * + * ## json + * A machine-readable, structured format. + * The serialized codepoints will be a list of objects with the following + * properties: + * - `u`: the Unicode codepoint as a decimal integer + * - `cl`: #hb_glyph_info_t.cluster if + * #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set. + * + * For example: + * + * ``` + * [{u:1617,cl:0},{u:1576,cl:1}] + * ``` + * + * Return value: + * The number of serialized items. + * + * Since: 2.7.3 + **/ +unsigned int +hb_buffer_serialize_unicode (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + end = hb_clamp (end, start, buffer->len); + start = hb_min (start, end); + + unsigned int sconsumed; + if (!buf_consumed) + buf_consumed = &sconsumed; + *buf_consumed = 0; + if (buf_size) + *buf = '\0'; + + buffer->assert_unicode (); + + if (unlikely (start == end)) + return 0; + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_serialize_unicode_text (buffer, start, end, + buf, buf_size, buf_consumed, flags); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_serialize_unicode_json (buffer, start, end, + buf, buf_size, buf_consumed, flags); default: case HB_BUFFER_SERIALIZE_FORMAT_INVALID: @@ -379,6 +599,91 @@ hb_buffer_serialize_glyphs (hb_buffer_t *buffer, } } +static unsigned int +_hb_buffer_serialize_invalid (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + assert (!buffer->len); + + unsigned int sconsumed; + if (!buf_consumed) + buf_consumed = &sconsumed; + if (buf_size < 3) + return 0; + if (format == HB_BUFFER_SERIALIZE_FORMAT_JSON) { + *buf++ = '['; + *buf++ = ']'; + *buf = '\0'; + } else if (format == HB_BUFFER_SERIALIZE_FORMAT_TEXT) { + *buf++ = '!'; + *buf++ = '!'; + *buf = '\0'; + } + *buf_consumed = 2; + return 0; +} + +/** + * hb_buffer_serialize: + * @buffer: an #hb_buffer_t buffer. + * @start: the first item in @buffer to serialize. + * @end: the last item in @buffer to serialize. + * @buf: (out) (array length=buf_size) (element-type uint8_t): output string to + * write serialized buffer into. + * @buf_size: the size of @buf. + * @buf_consumed: (out) (optional): if not %NULL, will be set to the number of byes written into @buf. + * @font: (nullable): the #hb_font_t used to shape this buffer, needed to + * read glyph names and extents. If %NULL, and empty font will be used. + * @format: the #hb_buffer_serialize_format_t to use for formatting the output. + * @flags: the #hb_buffer_serialize_flags_t that control what glyph properties + * to serialize. + * + * Serializes @buffer into a textual representation of its content, whether + * Unicode codepoints or glyph identifiers and positioning information. This is + * useful for showing the contents of the buffer, for example during debugging. + * See the documentation of hb_buffer_serialize_unicode() and + * hb_buffer_serialize_glyphs() for a description of the output format. + * + * Return value: + * The number of serialized items. + * + * Since: 2.7.3 + **/ +unsigned int +hb_buffer_serialize (hb_buffer_t *buffer, + unsigned int start, + unsigned int end, + char *buf, + unsigned int buf_size, + unsigned int *buf_consumed, + hb_font_t *font, + hb_buffer_serialize_format_t format, + hb_buffer_serialize_flags_t flags) +{ + switch (buffer->content_type) + { + + case HB_BUFFER_CONTENT_TYPE_GLYPHS: + return hb_buffer_serialize_glyphs (buffer, start, end, buf, buf_size, + buf_consumed, font, format, flags); + + case HB_BUFFER_CONTENT_TYPE_UNICODE: + return hb_buffer_serialize_unicode (buffer, start, end, buf, buf_size, + buf_consumed, format, flags); + + case HB_BUFFER_CONTENT_TYPE_INVALID: + default: + return _hb_buffer_serialize_invalid (buffer, start, end, buf, buf_size, + buf_consumed, format, flags); + } +} + static bool parse_int (const char *pp, const char *end, int32_t *pv) { @@ -403,39 +708,59 @@ parse_uint (const char *pp, const char *end, uint32_t *pv) return true; } +static bool +parse_hex (const char *pp, const char *end, uint32_t *pv) +{ + unsigned int v; + const char *p = pp; + if (unlikely (!hb_parse_uint (&p, end, &v, true/* whole buffer */, 16))) + return false; + + *pv = v; + return true; +} + #include "hb-buffer-deserialize-json.hh" #include "hb-buffer-deserialize-text.hh" /** * hb_buffer_deserialize_glyphs: * @buffer: an #hb_buffer_t buffer. - * @buf: (array length=buf_len): - * @buf_len: - * @end_ptr: (out): - * @font: - * @format: + * @buf: (array length=buf_len): string to deserialize + * @buf_len: the size of @buf, or -1 if it is %NULL-terminated + * @end_ptr: (out) (optional): output pointer to the character after last + * consumed one. + * @font: (nullable): font for getting glyph IDs + * @format: the #hb_buffer_serialize_format_t of the input @buf * + * Deserializes glyphs @buffer from textual representation in the format + * produced by hb_buffer_serialize_glyphs(). * - * - * Return value: + * Return value: %true if @buf is not fully consumed, %false otherwise. * * Since: 0.9.7 **/ hb_bool_t hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, - 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) + 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) { const char *end; if (!end_ptr) end_ptr = &end; *end_ptr = buf; - assert ((!buffer->len && (buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID)) || - (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS)); + buffer->assert_glyphs (); + + if (unlikely (hb_object_is_immutable (buffer))) + { + if (end_ptr) + *end_ptr = buf; + return false; + } if (buf_len == -1) buf_len = strlen (buf); @@ -454,14 +779,84 @@ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer, switch (format) { case HB_BUFFER_SERIALIZE_FORMAT_TEXT: - return _hb_buffer_deserialize_glyphs_text (buffer, - buf, buf_len, end_ptr, - font); + return _hb_buffer_deserialize_text (buffer, + buf, buf_len, end_ptr, + font); + + case HB_BUFFER_SERIALIZE_FORMAT_JSON: + return _hb_buffer_deserialize_json (buffer, + buf, buf_len, end_ptr, + font); + + default: + case HB_BUFFER_SERIALIZE_FORMAT_INVALID: + return false; + + } +} + + +/** + * hb_buffer_deserialize_unicode: + * @buffer: an #hb_buffer_t buffer. + * @buf: (array length=buf_len): string to deserialize + * @buf_len: the size of @buf, or -1 if it is %NULL-terminated + * @end_ptr: (out) (optional): output pointer to the character after last + * consumed one. + * @format: the #hb_buffer_serialize_format_t of the input @buf + * + * Deserializes Unicode @buffer from textual representation in the format + * produced by hb_buffer_serialize_unicode(). + * + * Return value: %true if @buf is not fully consumed, %false otherwise. + * + * Since: 2.7.3 + **/ +hb_bool_t +hb_buffer_deserialize_unicode (hb_buffer_t *buffer, + const char *buf, + int buf_len, /* -1 means nul-terminated */ + const char **end_ptr, /* May be NULL */ + hb_buffer_serialize_format_t format) +{ + const char *end; + if (!end_ptr) + end_ptr = &end; + *end_ptr = buf; + + buffer->assert_unicode (); + + if (unlikely (hb_object_is_immutable (buffer))) + { + if (end_ptr) + *end_ptr = buf; + return false; + } + + if (buf_len == -1) + buf_len = strlen (buf); + + if (!buf_len) + { + *end_ptr = buf; + return false; + } + + hb_buffer_set_content_type (buffer, HB_BUFFER_CONTENT_TYPE_UNICODE); + + hb_font_t* font = hb_font_get_empty (); + + switch (format) + { + case HB_BUFFER_SERIALIZE_FORMAT_TEXT: + return _hb_buffer_deserialize_text (buffer, + buf, buf_len, end_ptr, + font); case HB_BUFFER_SERIALIZE_FORMAT_JSON: - return _hb_buffer_deserialize_glyphs_json (buffer, - buf, buf_len, end_ptr, - font); + return _hb_buffer_deserialize_json (buffer, + buf, buf_len, end_ptr, + font); default: case HB_BUFFER_SERIALIZE_FORMAT_INVALID: |