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[HB] Check for GDEF/GSUB/GPOS versions

This commit is contained in:
Behdad Esfahbod 2009-05-24 00:50:27 -04:00
parent a21b5062cc
commit 212aba6189
5 changed files with 15 additions and 10 deletions
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3
src/hb-ot-layout-gdef-private.h
View File

@ -195,8 +195,7 @@ struct GDEF
ComponentGlyph = 4,
};
STATIC_DEFINE_GET_FOR_DATA (GDEF);
/* XXX check version here? */
STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION (GDEF, 1);
inline bool has_glyph_classes () const { return glyphClassDef != 0; }
inline hb_ot_layout_class_t get_glyph_class (hb_codepoint_t glyph) const { return (this+glyphClassDef).get_class (glyph); }

3
src/hb-ot-layout-gpos-private.h
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@ -1313,8 +1313,7 @@ struct GPOS : GSUBGPOS
{
static const hb_tag_t Tag = HB_TAG ('G','P','O','S');
STATIC_DEFINE_GET_FOR_DATA (GPOS);
/* XXX check version here? */
STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION (GPOS, 1);
inline const PosLookup& get_lookup (unsigned int i) const
{

3
src/hb-ot-layout-gsub-private.h
View File

@ -730,8 +730,7 @@ struct GSUB : GSUBGPOS
{
static const hb_tag_t Tag = HB_TAG ('G','S','U','B');
STATIC_DEFINE_GET_FOR_DATA (GSUB);
/* XXX check version here? */
STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION (GSUB, 1);
inline const SubstLookup& get_lookup (unsigned int i) const
{

5
src/hb-ot-layout-gsubgpos-private.h
View File

@ -747,8 +747,7 @@ struct GSUBGPOS
static const hb_tag_t GSUBTag = HB_TAG ('G','S','U','B');
static const hb_tag_t GPOSTag = HB_TAG ('G','P','O','S');
STATIC_DEFINE_GET_FOR_DATA (GSUBGPOS);
/* XXX check version here? */
STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION (GSUBGPOS, 1);
DEFINE_TAG_LIST_INTERFACE (Script, script ); /* get_script_count (), get_script (i), get_script_tag (i) */
DEFINE_TAG_LIST_INTERFACE (Feature, feature); /* get_feature_count(), get_feature(i), get_feature_tag(i) */
@ -758,7 +757,7 @@ struct GSUBGPOS
DEFINE_TAG_FIND_INTERFACE (Script, script ); /* find_script_index (), get_script_by_tag (tag) */
DEFINE_TAG_FIND_INTERFACE (Feature, feature); /* find_feature_index(), get_feature_by_tag(tag) */
private:
protected:
Fixed_Version version; /* Version of the GSUB/GPOS table--initially set
* to 0x00010000 */
OffsetTo<ScriptList>

11
src/hb-ot-layout-open-private.h
View File

@ -172,7 +172,16 @@ struct Null <Type> \
{ \
if (HB_UNLIKELY (data == NULL)) return Null(Type); \
return (const Type&)*data; \
} \
}
/* Like get_for_data(), but checks major version first. */
#define STATIC_DEFINE_GET_FOR_DATA_CHECK_MAJOR_VERSION(Type, Major) \
static inline const Type& get_for_data (const char *data) \
{ \
if (HB_UNLIKELY (data == NULL)) return Null(Type); \
const Type& t = (const Type&)*data; \
if (HB_UNLIKELY (t.version.major () != Major)) return Null(Type); \
return t; \
}