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[CBDT] Implement IndexSubtableFormat3

This commit is contained in:
Behdad Esfahbod 2016-12-04 19:26:54 -08:00
parent 9eda74c92c
commit a141d1da9b
1 changed files with 9 additions and 2 deletions
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11
src/hb-ot-cbdt-table.hh
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@ -100,7 +100,8 @@ struct IndexSubtableHeader
DEFINE_SIZE_STATIC(8);
};
struct IndexSubtableFormat1
template <typename OffsetType>
struct IndexSubtableFormat1Or3
{
inline bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const
{
@ -122,11 +123,14 @@ struct IndexSubtableFormat1
}
IndexSubtableHeader header;
Offset<ULONG> offsetArrayZ[VAR];
Offset<OffsetType> offsetArrayZ[VAR];
DEFINE_SIZE_ARRAY(8, offsetArrayZ);
};
struct IndexSubtableFormat1 : IndexSubtableFormat1Or3<ULONG> {};
struct IndexSubtableFormat3 : IndexSubtableFormat1Or3<USHORT> {};
struct IndexSubtable
{
inline bool sanitize (hb_sanitize_context_t *c, unsigned int glyph_count) const
@ -135,6 +139,7 @@ struct IndexSubtable
if (!u.header.sanitize (c)) return_trace (false);
switch (u.header.indexFormat) {
case 1: return_trace (u.format1.sanitize (c, glyph_count));
case 3: return_trace (u.format3.sanitize (c, glyph_count));
default:return_trace (true);
}
}
@ -156,6 +161,7 @@ struct IndexSubtable
*format = u.header.imageFormat;
switch (u.header.indexFormat) {
case 1: return u.format1.get_image_data (idx, offset, length);
case 3: return u.format3.get_image_data (idx, offset, length);
default: return false;
}
}
@ -164,6 +170,7 @@ struct IndexSubtable
union {
IndexSubtableHeader header;
IndexSubtableFormat1 format1;
IndexSubtableFormat3 format3;
} u;
public:
DEFINE_SIZE_UNION (8, header);