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[cmap] Implement collect_unicodes() for Format0/6/10

This commit is contained in:
Behdad Esfahbod 2018-08-25 09:35:45 -07:00
parent bd0e542525
commit 7d382fa276
1 changed files with 19 additions and 4 deletions
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23
src/hb-ot-cmap-table.hh
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@ -54,6 +54,12 @@ struct CmapSubtableFormat0
*glyph = gid;
return *glyph != 0;
}
inline void collect_unicodes (hb_set_t *out) const
{
for (unsigned int i = 0; i < 256; i++)
if (glyphIdArray[i])
out->add (i);
}
inline bool sanitize (hb_sanitize_context_t *c) const
{
@ -306,6 +312,7 @@ struct CmapSubtableFormat4
for (unsigned int i = 0; i < segCount; i++)
{
/* XXX This does NOT skip over chars mapping to gid0... */
if (startCount[i] != 0xFFFFu || endCount[i] != 0xFFFFu) // Skip the last segment (0xFFFF)
hb_set_add_range (out, startCount[i], endCount[i]);
}
@ -384,7 +391,7 @@ struct CmapSubtableLongGroup
HBUINT32 startCharCode; /* First character code in this group. */
HBUINT32 endCharCode; /* Last character code in this group. */
HBUINT32 glyphID; /* Glyph index; interpretation depends on
* subtable format. */
* subtable format. */
public:
DEFINE_SIZE_STATIC (12);
};
@ -401,6 +408,14 @@ struct CmapSubtableTrimmed
*glyph = gid;
return *glyph != 0;
}
inline void collect_unicodes (hb_set_t *out) const
{
hb_codepoint_t start = startCharCode;
unsigned int count = glyphIdArray.len;
for (unsigned int i = 0; i < count; i++)
if (glyphIdArray[i])
out->add (start + i);
}
inline bool sanitize (hb_sanitize_context_t *c) const
{
@ -694,10 +709,10 @@ struct CmapSubtable
inline void collect_unicodes (hb_set_t *out) const
{
switch (u.format) {
// case 0: u.format0 .collect_unicodes (out); return;
case 0: u.format0 .collect_unicodes (out); return;
case 4: u.format4 .collect_unicodes (out); return;
// case 6: u.format6 .collect_unicodes (out); return;
// case 10: u.format10.collect_unicodes (out); return;
case 6: u.format6 .collect_unicodes (out); return;
case 10: u.format10.collect_unicodes (out); return;
case 12: u.format12.collect_unicodes (out); return;
case 13: u.format13.collect_unicodes (out); return;
case 14: