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pull/2710/head
Simon Cozens 4 years ago committed by Behdad Esfahbod
parent aff6a36266
commit 57a528ab2c
1 changed files with 136 additions and 162 deletions
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  1. 298
      src/hb-buffer-serialize.cc

298
src/hb-buffer-serialize.cc
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@ -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;
@ -135,9 +135,9 @@ _hb_buffer_serialize_glyphs_json (hb_buffer_t *buffer,
hb_font_glyph_to_string (font, info[i].codepoint, g, sizeof (g));
*p++ = '"';
for (char *q = g; *q; q++) {
if (*q == '"')
*p++ = '\\';
*p++ = *q;
if (*q == '"')
*p++ = '\\';
*p++ = *q;
}
*p++ = '"';
}
@ -151,16 +151,16 @@ _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)
@ -168,9 +168,9 @@ _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++ = '}';
@ -198,58 +198,58 @@ _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)
unsigned int start,
unsigned int end,
char *buf,
unsigned int buf_size,
unsigned int *buf_consumed)
{
hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr);
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++ = ',';
*buf_consumed = 0;
for (unsigned int i = start; i < end; i++)
{
char b[1024];
char *p = b;
if (i)
*p++ = ',';
*p++ = '{';
*p++ = '{';
APPEND ("\"u\":");
p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint));
APPEND ("\"u\":");
p += hb_max (0, snprintf (p, ARRAY_LENGTH (b) - (p - b), "%u", info[i].codepoint));
*p++ = '}';
*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;
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;
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;
@ -278,21 +278,21 @@ _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)
@ -326,11 +326,11 @@ _hb_buffer_serialize_glyphs_text (hb_buffer_t *buffer,
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)
unsigned int start,
unsigned int end,
char *buf,
unsigned int buf_size,
unsigned int *buf_consumed)
{
hb_glyph_info_t *info = hb_buffer_get_glyph_infos (buffer, nullptr);
*buf_consumed = 0;
@ -405,14 +405,14 @@ _hb_buffer_serialize_unicode_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);
@ -424,7 +424,7 @@ hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
*buf = '\0';
assert ((!buffer->len && (buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID)) ||
(buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS));
(buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS));
if (!buffer->have_positions)
flags |= HB_BUFFER_SERIALIZE_FLAG_NO_POSITIONS;
@ -439,13 +439,13 @@ 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:
@ -456,43 +456,43 @@ hb_buffer_serialize_glyphs (hb_buffer_t *buffer,
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)
unsigned int start,
unsigned int end,
char *buf,
unsigned int buf_size,
unsigned int *buf_consumed,
hb_buffer_serialize_format_t format)
{
assert (start <= end && end <= buffer->len);
assert (start <= end && end <= buffer->len);
unsigned int sconsumed;
if (!buf_consumed)
buf_consumed = &sconsumed;
*buf_consumed = 0;
if (buf_size)
*buf = '\0';
unsigned int sconsumed;
if (!buf_consumed)
buf_consumed = &sconsumed;
*buf_consumed = 0;
if (buf_size)
*buf = '\0';
assert ((!buffer->len && (buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID)) ||
(buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE));
assert ((!buffer->len && (buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID)) ||
(buffer->content_type == HB_BUFFER_CONTENT_TYPE_UNICODE));
if (unlikely (start == end))
return 0;
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);
switch (format)
{
case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
return _hb_buffer_serialize_unicode_text (buffer, start, end,
buf, buf_size, buf_consumed);
case HB_BUFFER_SERIALIZE_FORMAT_JSON:
return _hb_buffer_serialize_unicode_json (buffer, start, end,
buf, buf_size, buf_consumed);
case HB_BUFFER_SERIALIZE_FORMAT_JSON:
return _hb_buffer_serialize_unicode_json (buffer, start, end,
buf, buf_size, buf_consumed);
default:
case HB_BUFFER_SERIALIZE_FORMAT_INVALID:
return 0;
default:
case HB_BUFFER_SERIALIZE_FORMAT_INVALID:
return 0;
}
}
}
/**
* hb_buffer_serialize:
@ -512,34 +512,8 @@ hb_buffer_serialize_unicode (hb_buffer_t *buffer,
* 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.
* There are currently two supported serialization formats:
*
* ## text
* A human-readable, plain text format.
* Serialized glyphs will look something like:
*
* ```
* [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
* #HB_BUFFER_SERIALIZE_FLAG_NO_GLYPH_NAMES flag is set. Then,
* - If #HB_BUFFER_SERIALIZE_FLAG_NO_CLUSTERS is not set, `=` then #hb_glyph_info_t.cluster.
* - 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
* `&lt;x_bearing,y_bearing,width,height&gt;`
*
* Serialized Unicode codepoints will look like:
*
* ```
* [U+0651|U+0628]
* ```
* ## json
* TODO.
* 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.
@ -548,21 +522,21 @@ hb_buffer_serialize_unicode (hb_buffer_t *buffer,
**/
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)
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)
{
if (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS)
return hb_buffer_serialize_glyphs(buffer, start, end, buf, buf_size,
buf_consumed, font, format, flags);
else
return hb_buffer_serialize_unicode(buffer, start, end, buf, buf_size,
buf_consumed, format);
if (buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS)
return hb_buffer_serialize_glyphs(buffer, start, end, buf, buf_size,
buf_consumed, font, format, flags);
else
return hb_buffer_serialize_unicode(buffer, start, end, buf, buf_size,
buf_consumed, format);
}
static bool
@ -609,11 +583,11 @@ parse_uint (const char *pp, const char *end, uint32_t *pv)
**/
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)
@ -621,7 +595,7 @@ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
*end_ptr = buf;
assert ((!buffer->len && (buffer->content_type == HB_BUFFER_CONTENT_TYPE_INVALID)) ||
(buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS));
(buffer->content_type == HB_BUFFER_CONTENT_TYPE_GLYPHS));
if (unlikely (hb_object_is_immutable (buffer)))
{
@ -647,13 +621,13 @@ hb_buffer_deserialize_glyphs (hb_buffer_t *buffer,
{
case HB_BUFFER_SERIALIZE_FORMAT_TEXT:
return _hb_buffer_deserialize_glyphs_text (buffer,
buf, buf_len, end_ptr,
font);
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);
buf, buf_len, end_ptr,
font);
default:
case HB_BUFFER_SERIALIZE_FORMAT_INVALID:

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