提交 befc022a 编写于 作者: B Behdad Esfahbod

LangSys

上级 c81efca1
...@@ -27,7 +27,7 @@ typedef uint32_t hb_tag_t; ...@@ -27,7 +27,7 @@ typedef uint32_t hb_tag_t;
#define DEFINE_INT_TYPE1(NAME, TYPE, BIG_ENDIAN) \ #define DEFINE_INT_TYPE1(NAME, TYPE, BIG_ENDIAN) \
struct NAME { \ struct NAME { \
inline NAME (void) { v = 0; } \ inline NAME (void) { v = 0; } \
inline NAME (TYPE i) { v = BIG_ENDIAN(i); } \ explicit inline NAME (TYPE i) { v = BIG_ENDIAN(i); } \
inline NAME& operator = (TYPE i) { v = BIG_ENDIAN(i); return *this; } \ inline NAME& operator = (TYPE i) { v = BIG_ENDIAN(i); return *this; } \
inline operator TYPE(void) const { return BIG_ENDIAN(v); } \ inline operator TYPE(void) const { return BIG_ENDIAN(v); } \
inline bool operator== (NAME o) const { return v == o.v; } \ inline bool operator== (NAME o) const { return v == o.v; } \
...@@ -157,10 +157,11 @@ struct F2DOT14 : SHORT { ...@@ -157,10 +157,11 @@ struct F2DOT14 : SHORT {
* system, feature, or baseline */ * system, feature, or baseline */
struct Tag { struct Tag {
inline Tag (void) { v[0] = v[1] = v[2] = v[3] = 0; } inline Tag (void) { v[0] = v[1] = v[2] = v[3] = 0; }
inline Tag (uint32_t v) { (ULONG&)(*this) = v; }
inline Tag (const char *c) { v[0] = c[0]; v[1] = c[1]; v[2] = c[2]; v[3] = c[3]; } inline Tag (const char *c) { v[0] = c[0]; v[1] = c[1]; v[2] = c[2]; v[3] = c[3]; }
inline operator uint32_t(void) const { return (v[0]<<24)+(v[1]<<16) +(v[2]<<8)+v[3]; } \ inline bool operator== (Tag o) const { return v[0]==o.v[0]&&v[1]==o.v[1]&&v[2]==o.v[2]&&v[3]==o.v[3]; }
inline operator uint32_t(void) const { return (v[0]<<24)+(v[1]<<16) +(v[2]<<8)+v[3]; }
/* The char* these two return is NOT nul-terminated. Print using "%.4s" */ /* What the char* converters return is NOT nul-terminated. Print using "%.4s" */
inline operator const char* (void) const { return (const char *)this; } inline operator const char* (void) const { return (const char *)this; }
inline operator char* (void) { return (char *)this; } inline operator char* (void) { return (char *)this; }
...@@ -219,6 +220,7 @@ typedef struct TableDirectory { ...@@ -219,6 +220,7 @@ typedef struct TableDirectory {
typedef struct OffsetTable { typedef struct OffsetTable {
DEFINE_NOT_INSTANTIABLE(OffsetTable); DEFINE_NOT_INSTANTIABLE(OffsetTable);
/* OpenTypeTables, in no particular order */
DEFINE_ARRAY_TYPE (TableDirectory, tableDir, numTables); DEFINE_ARRAY_TYPE (TableDirectory, tableDir, numTables);
// TODO: Implement find_table // TODO: Implement find_table
...@@ -236,8 +238,7 @@ typedef struct OffsetTable { ...@@ -236,8 +238,7 @@ typedef struct OffsetTable {
struct TTCHeader { struct TTCHeader {
DEFINE_NOT_INSTANTIABLE(TTCHeader); DEFINE_NOT_INSTANTIABLE(TTCHeader);
/* This works as an array type because TTCHeader is always located at the /* OpenTypeFonts, in no particular order */
* beginning of the file */
DEFINE_OFFSET_ARRAY_TYPE (OffsetTable, offsetTable, numFonts); DEFINE_OFFSET_ARRAY_TYPE (OffsetTable, offsetTable, numFonts);
Tag TTCTag; /* TrueType Collection ID string: 'ttcf' */ Tag TTCTag; /* TrueType Collection ID string: 'ttcf' */
...@@ -318,6 +319,7 @@ struct Script; ...@@ -318,6 +319,7 @@ struct Script;
struct ScriptList { struct ScriptList {
DEFINE_NOT_INSTANTIABLE(ScriptList); DEFINE_NOT_INSTANTIABLE(ScriptList);
/* Scripts, in sorted alphabetical order */
DEFINE_RECORD_ARRAY_TYPE (Script, scriptRecord, scriptCount); DEFINE_RECORD_ARRAY_TYPE (Script, scriptRecord, scriptCount);
USHORT scriptCount; /* Number of ScriptRecords */ USHORT scriptCount; /* Number of ScriptRecords */
...@@ -327,8 +329,21 @@ struct ScriptList { ...@@ -327,8 +329,21 @@ struct ScriptList {
struct Script { struct Script {
DEFINE_NOT_INSTANTIABLE(Script); DEFINE_NOT_INSTANTIABLE(Script);
/* LangSys', in sorted alphabetical order */
DEFINE_RECORD_ARRAY_TYPE (LangSys, langSysRecord, langSysCount); DEFINE_RECORD_ARRAY_TYPE (LangSys, langSysRecord, langSysCount);
/* Return NULL if none */
inline const LangSys* get_default_language_system (void) const {
if (!defaultLangSys)
return NULL;
return (const LangSys *)((const char*)this + defaultLangSys);
}
inline LangSys* get_default_language_system (void) {
if (!defaultLangSys)
return NULL;
return (LangSys *)((char*)this + defaultLangSys);
}
Offset defaultLangSys; /* Offset to DefaultLangSys table--from Offset defaultLangSys; /* Offset to DefaultLangSys table--from
* beginning of Script table--may be NULL */ * beginning of Script table--may be NULL */
USHORT langSysCount; /* Number of LangSysRecords for this script-- USHORT langSysCount; /* Number of LangSysRecords for this script--
...@@ -338,8 +353,27 @@ struct Script { ...@@ -338,8 +353,27 @@ struct Script {
}; };
struct LangSys { struct LangSys {
DEFINE_NOT_INSTANTIABLE(LangSys);
/* FeatureIndexes, in no particular order */
DEFINE_ARRAY_TYPE (USHORT, featureIndex, featureCount);
/* Returns -1 if none */
inline int get_required_feature_index (void) const {
if (reqFeatureIndex == 0xffff)
return -1;
return reqFeatureIndex;;
}
Offset lookupOrder; /* = NULL (reserved for an offset to a
* reordering table) */
USHORT reqFeatureIndex;/* Index of a feature required for this
* language system--if no required features
* = 0xFFFF */
USHORT featureCount; /* Number of FeatureIndex values for this
* language system--excludes the required
* feature */
USHORT featureIndex[]; /* Array of indices into the FeatureList--in
* arbitrary order */
}; };
...@@ -387,10 +421,13 @@ main (int argc, char **argv) ...@@ -387,10 +421,13 @@ main (int argc, char **argv)
printf ("%d table(s) found in font\n", num_tables); printf ("%d table(s) found in font\n", num_tables);
for (int n_table = 0; n_table < num_tables; n_table++) { for (int n_table = 0; n_table < num_tables; n_table++) {
const OpenTypeTable &table = font[n_table]; const OpenTypeTable &table = font[n_table];
printf ("Table %d of %d: %.4s (%04x+%04x)\n", n_table+1, num_tables, printf ("Table %2d of %2d: %.4s (0x%06x+0x%06x)\n", n_table+1, num_tables,
(const char *)table.tag, (int)table.offset, (int)table.length); (const char *)table.tag, (int)table.offset, (int)table.length);
} }
} }
Tag a;
a == ((Tag)"1234");
return 0; return 0;
} }
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