GSUBGPOSHeader
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Behdad Esfahbod
parent
eebabd8b2e
commit
71d62baab0
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@ -162,6 +162,7 @@ struct Tag {
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inline Tag (uint32_t v) { (ULONG&)(*this) = v; }
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inline Tag (const char *c) { v[0] = c[0]; v[1] = c[1]; v[2] = c[2]; v[3] = c[3]; }
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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]; }
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inline bool operator== (const char *c) const { return v[0]==c[0]&&v[1]==c[1]&&v[2]==c[2]&&v[3]==c[3]; }
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inline operator uint32_t(void) const { return (v[0]<<24)+(v[1]<<16) +(v[2]<<8)+v[3]; }
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/* What the char* converters return is NOT nul-terminated. Print using "%.4s" */
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inline operator const char* (void) const { return (const char *)this; }
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@ -268,6 +269,20 @@ struct OpenTypeFontFile {
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return (OpenTypeFontFile&)*font_data;
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}
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/* This is how you get a table */
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inline const char* get_table (const OpenTypeTable& table) const {
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return ((const char*)this) + table.offset;
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}
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inline char* get_table (const OpenTypeTable& table) {
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return ((char*)this) + table.offset;
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}
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inline const char* operator[] (const OpenTypeTable& table) const {
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return ((const char*)this) + table.offset;
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}
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inline char* operator[] (const OpenTypeTable& table) {
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return ((char*)this) + table.offset;
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}
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/* Array interface sans get_size() */
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inline unsigned int get_len (void) const {
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switch (tag) {
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@ -643,6 +658,45 @@ struct Device {
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/*
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*
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* The Glyph Substitution Table
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*
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*/
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#define DEFINE_LIST_ACCESSOR0(const, Type, name) \
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inline const Type##List* get_##name##_list (void) const { \
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assert (name##List); \
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return (const Type##List *)((const char*)this + name##List); \
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} \
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inline const Type& name (unsigned int i) const { \
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return (*get_##name##_list())[i]; \
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}
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#define DEFINE_LIST_ACCESSOR(Type, name) \
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DEFINE_LIST_ACCESSOR0(const, Type, name) \
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DEFINE_LIST_ACCESSOR0( , Type, name)
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struct GSUBGPOSHeader {
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DEFINE_LIST_ACCESSOR(Script, script); /* get_script_list and script(i) */
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DEFINE_LIST_ACCESSOR(Feature, feature);/* get_feature_list and feature(i) */
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DEFINE_LIST_ACCESSOR(Lookup, lookup); /* get_lookup_list and lookup(i) */
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Fixed_Version version; /* Version of the GSUB table-initially set to
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* 0x00010000 */
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Offset scriptList; /* Offset to ScriptList table-from beginning of
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* GSUB table */
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Offset featureList; /* Offset to FeatureList table-from beginning of
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* GSUB table */
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Offset lookupList; /* Offset to LookupList table-from beginning of
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* GSUB table */
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};
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struct GSUB : GSUBGPOSHeader {
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};
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#include <stdlib.h>
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@ -686,16 +740,55 @@ main (int argc, char **argv)
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printf ("Font %d of %d:\n", n_font+1, num_fonts);
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int num_tables = font.get_len ();
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printf ("%d table(s) found in font\n", num_tables);
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printf (" %d table(s) found in font\n", num_tables);
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for (int n_table = 0; n_table < num_tables; n_table++) {
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const OpenTypeTable &table = font[n_table];
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printf ("Table %2d of %2d: %.4s (0x%06x+0x%06x)\n", n_table+1, num_tables,
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printf (" Table %2d of %2d: %.4s (0x%06x+0x%06x)\n", n_table+1, num_tables,
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(const char *)table.tag, (int)table.offset, (int)table.length);
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if (table.tag == "GSUB" || table.tag == "GPOS") {
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const GSUBGPOSHeader &g = (const GSUBGPOSHeader&)*ot[table];
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const ScriptList &scripts = *g.get_script_list();
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int num_scripts = scripts.get_len ();
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printf (" %d script(s) found in table\n", num_scripts);
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for (int n_script = 0; n_script < num_scripts; n_script++) {
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const Script &script = scripts[n_script];
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printf (" Script %2d of %2d: %.4s\n", n_script+1, num_scripts,
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(const char *)scripts.get_tag(n_script));
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if (script.get_default_language_system () == NULL)
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printf (" No default language system\n");
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int num_langsys = script.get_len ();
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printf (" %d language system(s) found in script\n", num_langsys);
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for (int n_langsys = 0; n_langsys < num_langsys; n_langsys++) {
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const LangSys &langsys = script[n_langsys];
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printf (" Language System %2d of %2d: %.4s\n", n_langsys+1, num_langsys,
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(const char *)script.get_tag(n_langsys));
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}
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}
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Tag a;
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a == ((Tag)"1234");
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const FeatureList &features = *g.get_feature_list();
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int num_features = features.get_len ();
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printf (" %d feature(s) found in table\n", num_features);
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for (int n_feature = 0; n_feature < num_features; n_feature++) {
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const Feature &feature = features[n_feature];
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printf (" Feature %2d of %2d: %.4s; %d lookup(s)\n", n_feature+1, num_features,
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(const char *)features.get_tag(n_feature),
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(int)feature.lookupCount);
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}
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const LookupList &lookups = *g.get_lookup_list();
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int num_lookups = lookups.get_len ();
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printf (" %d lookup(s) found in table\n", num_lookups);
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for (int n_lookup = 0; n_lookup < num_lookups; n_lookup++) {
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const Lookup &lookup = lookups[n_lookup];
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printf (" Lookup %2d of %2d: type %d, flags %04x\n", n_lookup+1, num_lookups,
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(int)lookup.lookupType, (unsigned int)lookup.lookupFlag);
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}
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}
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}
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}
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return 0;
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}
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