/***
Table of contents:
- (1) Structures for OTF tables and OTF itself
+ (1) Structures for OTF Layout tables and OTF itself
(1-1) Basic types
(1-2) "head" table
(1-3) "name" table
(1-5) Structures common to GDEF, GSUB, and GPOS
(1-6) "GDEF" table
(1-7) Structures for ScriptList, FeatureList, and LookupList
- (1-8) "GSUB" table
- (1-9) "GPOS" table
- (1-9) Structure for OTF
+ (1-8) Structures common to GSUB and GPOS
+ (1-9) "GSUB" table
+ (1-10) "GPOS" table
+ (1-11) Structure for OTF
(2) APIs for reading OTF
(2-1) OTF_open()
*/
-/*** (1) Structures for OTF tables and OTF itself */
+\f
+/*** (1) Structures for OTF Layout tables and OTF itself */
/*** (1-1) Basic types */
OTF_Lookup *Lookup;
} OTF_LookupList;
-/*** (1-8) "GSUB" table */
+
+/*** (1-8) Structures common to GSUB and GPOS */
+
+/* For SubstLookupRecord (GSUB) and PosLookupRecord (GPOS). */
typedef struct
{
- int DeltaGlyphID;
-} OTF_GSUB_Single1;
+ unsigned SequenceIndex;
+ unsigned LookupListIndex;
+} OTF_LookupRecord;
typedef struct
{
+ OTF_Offset offset;
unsigned GlyphCount;
- OTF_GlyphID *Substitute;
-} OTF_GSUB_Single2;
-
-typedef struct OTF_Sequence OTF_Sequence;
+ unsigned LookupCount;
+ OTF_GlyphID *Input; /* [<GlyphCount> - 1] */
+ OTF_LookupRecord *LookupRecord; /* [<LookupCount>] */
+} OTF_Rule;
typedef struct
{
- unsigned SequenceCount;
- OTF_Sequence *Sequence;
-} OTF_GSUB_Multiple1;
+ OTF_Offset offset;
+ unsigned RuleCount;
+ OTF_Rule *Rule; /* [<RuleCount>] */
+} OTF_RuleSet;
-struct OTF_Sequence
+typedef struct
{
OTF_Offset offset;
unsigned GlyphCount;
- OTF_GlyphID *Substitute;
-};
-
-typedef struct OTF_AlternateSet OTF_AlternateSet;
+ unsigned LookupCount;
+ unsigned *Class; /* [<GlyphCount> - 1] */
+ OTF_LookupRecord *LookupRecord; /* [<LookupCount>] */
+} OTF_ClassRule;
typedef struct
{
- unsigned AlternateSetCount;
- OTF_AlternateSet *AlternateSet;
-} OTF_GSUB_Alternate1;
-
-struct OTF_AlternateSet
-{
OTF_Offset offset;
- unsigned GlyphCount;
- OTF_GlyphID *Alternate;
-};
-
-typedef struct OTF_LigatureSet OTF_LigatureSet;
-typedef struct OTF_Ligature OTF_Ligature;
+ unsigned ClassRuleCnt;
+ OTF_ClassRule *ClassRule; /* [<ClassRuleCnt>] */
+} OTF_ClassSet;
typedef struct
{
- unsigned LigSetCount;
- OTF_LigatureSet *LigatureSet;
-} OTF_GSUB_Ligature1;
+ OTF_Offset offset;
+ unsigned BacktrackGlyphCount;
+ OTF_GlyphID *Backtrack;
+ unsigned InputGlyphCount;
+ OTF_GlyphID *Input;
+ unsigned LookaheadGlyphCount;
+ OTF_GlyphID *LookAhead;
+ unsigned LookupCount;
+ OTF_LookupRecord *LookupRecord;
+} OTF_ChainRule;
-struct OTF_LigatureSet
+typedef struct
{
OTF_Offset offset;
- unsigned LigatureCount;
- OTF_Ligature *Ligature;
-};
+ unsigned ChainRuleCount;
+ OTF_ChainRule *ChainRule;
+} OTF_ChainRuleSet;
-struct OTF_Ligature
+typedef struct
{
OTF_Offset offset;
- OTF_GlyphID LigGlyph;
- unsigned CompCount;
- OTF_GlyphID *Component;
-};
+ unsigned BacktrackGlyphCount;
+ unsigned *Backtrack;
+ unsigned InputGlyphCount;
+ unsigned *Input;
+ unsigned LookaheadGlyphCount;
+ unsigned *LookAhead;
+ unsigned LookupCount;
+ OTF_LookupRecord *LookupRecord;
+} OTF_ChainClassRule;
typedef struct
{
- unsigned SequenceIndex;
- unsigned LookupListIndex;
-} OTF_LookupRecord;
+ OTF_Offset offset;
+ unsigned ChainClassRuleCnt;
+ OTF_ChainClassRule *ChainClassRule;
+} OTF_ChainClassSet;
-typedef struct OTF_RuleSet OTF_RuleSet;
+
+/* Common to OTF_GSUB/GPOS_Context1/2/3. */
typedef struct
{
- unsigned SubRuleSetCount;
- OTF_RuleSet *SubRuleSet; /* [<SubRuleSetCount>] */
-} OTF_GSUB_Context1;
-
-typedef struct OTF_Rule OTF_Rule;
+ unsigned RuleSetCount;
+ OTF_RuleSet *RuleSet; /* [<RuleSetCount>] */
+} OTF_Context1;
-struct OTF_RuleSet
+typedef struct
{
- OTF_Offset offset;
- unsigned RuleCount;
- OTF_Rule *Rule; /* [<RuleCount>] */
-};
+ OTF_ClassDef ClassDef;
+ unsigned ClassSetCnt;
+ OTF_ClassSet *ClassSet; /* [<ClassSetCnt>] */
+} OTF_Context2;
-struct OTF_Rule
+typedef struct
{
- OTF_Offset offset;
unsigned GlyphCount;
unsigned LookupCount;
- OTF_GlyphID *Input; /* [<GlyphCount> - 1] */
+ OTF_Coverage *Coverage; /* [<GlyphCount>] */
OTF_LookupRecord *LookupRecord; /* [<LookupCount>] */
-};
+} OTF_Context3;
-typedef struct OTF_ClassSet OTF_ClassSet;
+
+/* Common to OTF_GSUB/GPOS_ChainContext1/2/3. */
typedef struct
{
- OTF_ClassDef ClassDef;
- unsigned SubClassSetCnt;
- OTF_ClassSet *SubClassSet; /* [<ClassSetCnt>] */
-} OTF_GSUB_Context2;
+ unsigned ChainRuleSetCount;
+ OTF_ChainRuleSet *ChainRuleSet;
+} OTF_ChainContext1;
-typedef struct OTF_ClassRule OTF_ClassRule;
-
-struct OTF_ClassSet
+typedef struct
{
- OTF_Offset offset;
- unsigned ClassRuleCnt;
- OTF_ClassRule *ClassRule; /* [<ClassRuleCnt>] */
-};
+ OTF_ClassDef BacktrackClassDef;
+ OTF_ClassDef InputClassDef;
+ OTF_ClassDef LookaheadClassDef;
+ unsigned ChainClassSetCnt;
+ OTF_ChainClassSet *ChainClassSet;
+} OTF_ChainContext2;
-struct OTF_ClassRule
+typedef struct
{
- OTF_Offset offset;
- unsigned GlyphCount;
+ unsigned BacktrackGlyphCount;
+ OTF_Coverage *Backtrack;
+ unsigned InputGlyphCount;
+ OTF_Coverage *Input;
+ unsigned LookaheadGlyphCount;
+ OTF_Coverage *LookAhead;
unsigned LookupCount;
- unsigned *Class; /* [<GlyphCount> - 1] */
- OTF_LookupRecord *LookupRecord; /* [<LookupCount>] */
-};
+ OTF_LookupRecord *LookupRecord;
+} OTF_ChainContext3;
+
+/* Common to OTF_GSUB/GPOS. */
typedef struct
{
- unsigned GlyphCount;
- unsigned SubstCount;
- OTF_Coverage *Coverage;
- OTF_LookupRecord *LookupRecord;
-} OTF_GSUB_Context3;
+ OTF_Fixed Version;
+ OTF_ScriptList ScriptList;
+ OTF_FeatureList FeatureList;
+ OTF_LookupList LookupList;
+} OTF_GSUB_GPOS;
-typedef struct OTF_ChainRuleSet OTF_ChainRuleSet;
+/*** (1-9) "GSUB" table */
typedef struct
{
- unsigned ChainSubRuleSetCount;
- OTF_ChainRuleSet *ChainSubRuleSet;
-} OTF_GSUB_ChainContext1;
+ int DeltaGlyphID;
+} OTF_GSUB_Single1;
+
+typedef struct
+{
+ unsigned GlyphCount;
+ OTF_GlyphID *Substitute;
+} OTF_GSUB_Single2;
-typedef struct OTF_ChainRule OTF_ChainRule;
+typedef struct OTF_Sequence OTF_Sequence;
+
+typedef struct
+{
+ unsigned SequenceCount;
+ OTF_Sequence *Sequence;
+} OTF_GSUB_Multiple1;
-struct OTF_ChainRuleSet
+struct OTF_Sequence
{
OTF_Offset offset;
- unsigned ChainRuleCount;
- OTF_ChainRule *ChainRule;
+ unsigned GlyphCount;
+ OTF_GlyphID *Substitute;
};
-struct OTF_ChainRule
+typedef struct OTF_AlternateSet OTF_AlternateSet;
+
+typedef struct
+{
+ unsigned AlternateSetCount;
+ OTF_AlternateSet *AlternateSet;
+} OTF_GSUB_Alternate1;
+
+struct OTF_AlternateSet
{
OTF_Offset offset;
- unsigned BacktrackGlyphCount;
- OTF_GlyphID *Backtrack;
- unsigned InputGlyphCount;
- OTF_GlyphID *Input;
- unsigned LookaheadGlyphCount;
- OTF_GlyphID *LookAhead;
- unsigned LookupCount;
- OTF_LookupRecord *LookupRecord;
+ unsigned GlyphCount;
+ OTF_GlyphID *Alternate;
};
-typedef struct OTF_ChainClassSet OTF_ChainClassSet;
+typedef struct OTF_LigatureSet OTF_LigatureSet;
+typedef struct OTF_Ligature OTF_Ligature;
typedef struct
{
- OTF_ClassDef Backtrack;
- OTF_ClassDef Input;
- OTF_ClassDef LookAhead;
- unsigned ChainSubClassSetCnt;
- OTF_ChainClassSet *ChainSubClassSet;
-} OTF_GSUB_ChainContext2;
-
-typedef struct OTF_ChainClassRule OTF_ChainClassRule;
+ unsigned LigSetCount;
+ OTF_LigatureSet *LigatureSet;
+} OTF_GSUB_Ligature1;
-struct OTF_ChainClassSet
+struct OTF_LigatureSet
{
OTF_Offset offset;
- unsigned ChainClassRuleCnt;
- OTF_ChainClassRule *ChainClassRule;
+ unsigned LigatureCount;
+ OTF_Ligature *Ligature;
};
-struct OTF_ChainClassRule
+struct OTF_Ligature
{
OTF_Offset offset;
- unsigned BacktrackGlyphCount;
- unsigned *Backtrack;
- unsigned InputGlyphCount;
- unsigned *Input;
- unsigned LookaheadGlyphCount;
- unsigned *LookAhead;
- unsigned LookupCount;
- OTF_LookupRecord *LookupRecord;
+ OTF_GlyphID LigGlyph;
+ unsigned CompCount;
+ OTF_GlyphID *Component;
};
+typedef OTF_Context1 OTF_GSUB_Context1;
-typedef struct
-{
- unsigned BacktrackGlyphCount;
- OTF_Coverage *Backtrack;
- unsigned InputGlyphCount;
- OTF_Coverage *Input;
- unsigned LookaheadGlyphCount;
- OTF_Coverage *LookAhead;
- unsigned SubstCount;
- OTF_LookupRecord *LookupRecord;
-} OTF_GSUB_ChainContext3;
+typedef OTF_Context2 OTF_GSUB_Context2;
+
+typedef OTF_Context3 OTF_GSUB_Context3;
+
+typedef OTF_ChainContext1 OTF_GSUB_ChainContext1;
+
+typedef OTF_ChainContext2 OTF_GSUB_ChainContext2;
+
+typedef OTF_ChainContext3 OTF_GSUB_ChainContext3;
typedef struct
{
} u;
};
-typedef struct
-{
- OTF_Fixed Version;
- OTF_ScriptList ScriptList;
- OTF_FeatureList FeatureList;
- OTF_LookupList LookupList;
-} OTF_GSUB;
+typedef OTF_GSUB_GPOS OTF_GSUB;
-/*** (1-8) "GPOS" table */
+/*** (1-10) "GPOS" table */
enum OTF_ValueFormat
{
OTF_AnchorArray Mark2Array;
} OTF_GPOS_MarkMark1;
+typedef OTF_Context1 OTF_GPOS_Context1;
-typedef struct
-{
- unsigned PosRuleSetCount;
- OTF_RuleSet *PosRuleSet;
-} OTF_GPOS_Context1;
+typedef OTF_Context2 OTF_GPOS_Context2;
-typedef struct
-{
- OTF_ClassDef ClassDef;
- unsigned PosClassSetCnt;
- OTF_ClassSet *PosClassSet;
-} OTF_GPOS_Context2;
+typedef OTF_Context3 OTF_GPOS_Context3;
-typedef struct
-{
- unsigned GlyphCount;
- unsigned PosCount;
- OTF_Coverage *Coverage; /* [<GlyphCount>] */
- OTF_LookupRecord *LookupRecord; /* [<PosCount>] */
-} OTF_GPOS_Context3;
+typedef OTF_ChainContext1 OTF_GPOS_ChainContext1;
-typedef struct
-{
- unsigned ChainPosRuleSetCount;
- OTF_ChainRuleSet *ChainPosRuleSet;
-} OTF_GPOS_ChainContext1;
+typedef OTF_ChainContext2 OTF_GPOS_ChainContext2;
-typedef struct
-{
- OTF_ClassDef Backtrack;
- OTF_ClassDef Input;
- OTF_ClassDef LookAhead;
- unsigned ChainPosClassSetCnt;
- OTF_ChainClassSet *ChainPosClassSet;
-} OTF_GPOS_ChainContext2;
-
-typedef struct
-{
- unsigned BacktrackGlyphCount;
- OTF_Coverage *Backtrack;
- unsigned InputGlyphCount;
- OTF_Coverage *Input;
- unsigned LookaheadGlyphCount;
- OTF_Coverage *LookAhead;
- unsigned PosCount;
- OTF_LookupRecord *LookupRecord;
-} OTF_GPOS_ChainContext3;
+typedef OTF_ChainContext3 OTF_GPOS_ChainContext3;
typedef struct
{
} u;
};
-typedef struct
-{
- OTF_Fixed Version;
- OTF_ScriptList ScriptList;
- OTF_FeatureList FeatureList;
- OTF_LookupList LookupList;
-} OTF_GPOS;
+typedef OTF_GSUB_GPOS OTF_GPOS;
-/*** (1-9) Structure for OTF */
+/*** (1-11) Structure for OTF */
typedef struct
{
/***
Convert OTF tag to name string.
- The OTF_tag_name() function converts OTF tag $TAG to a 5-byte
- name string (including the terminating NUL), and store it in
- $NAME. At least 5-byte space must be at $NAME. */
+ The OTF_tag_name() function converts OTF tag $TAG to a 5-byte name
+ string (including the terminating NULL), and store it in $NAME.
+ At least 5-byte space must be at $NAME. */
extern void OTF_tag_name (OTF_Tag tag, char *name);
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