C++字体库开发之字体包解析十二

parse.h#ifndef FONT_SUBSET_EXPORT_H #define FONT_SUBSET_EXPORT_H #ifndef FONT_SUBSET_API # ifdef FONT_SUBSET_LIBRATY # ifdef _MSC_VER # if defined FONT_SUBSET_LIBRATY # define FONT_SUBSET_API __declspec(dllexport) # else # define FONT_SUBSET_API __declspec(dllimport) # endif # else # define FONT_SUBSET_API __attribute__((visibility(default))) # endif # else # define FONT_SUBSET_API # endif #endif struct FontTTCByteData{ unsigned char *buffer nullptr; unsigned int length 0; }; struct FontSubSetByteDatas { struct One{ unsigned char *buffer nullptr; unsigned int length 0; char* familyName nullptr; unsigned int nameLength 0; } *subsets; unsigned int size 0; }; FONT_SUBSET_API FontSubSetByteDatas createSubsetFonts(FontTTCByteData ttcSteam); FONT_SUBSET_API FontSubSetByteDatas createSubsetFonts(const char* path); FONT_SUBSET_API void releaseSubsetFonts(FontSubSetByteDatas datas); FONT_SUBSET_API bool isTTC(FontTTCByteData ttcSteam); #endif // FONT_SUBSET_EXPORT_Hparse.cpp#include sfntly/data/memory_byte_array.h #include sfntly/font_factory.h #include sfntly/port/file_input_stream.h #include sfntly/port/memory_output_stream.h #include sfntly/table/core/name_table.h #include sfntly/tag.h #include iostream #include unicode/ustring.h #include parseTTC.h #include sfntly/port/memory_input_stream.h FONT_SUBSET_API FontSubSetByteDatas createSubsetFonts(sfntly::InputStream* inputStream) { using namespace sfntly; FontFactoryPtr factory; factory.Attach(FontFactory::GetInstance()); // File based FontBuilderArray font_builder_array; factory-LoadFontsForBuilding(inputStream, font_builder_array); // 创建输出流数组 FontSubSetByteDatas fontSubSetByteDatas; fontSubSetByteDatas.subsets new FontSubSetByteDatas::One[font_builder_array.size()]; fontSubSetByteDatas.size font_builder_array.size(); for (int index 0; index fontSubSetByteDatas.size; index) { const auto font_builder font_builder_array.at(index); NameTableBuilderPtr name_builder down_castNameTable::Builder*( font_builder-GetTableBuilder(Tag::name)); // // Change the font name. // auto findName name_builder-Has(PlatformId::kWindows, // WindowsEncodingId::kUnicodeUCS2, // WindowsLanguageId::kEnglish_UnitedStates, // NameId::kFontFamilyName); NameEntryBuilderPtr neb name_builder-NameBuilder(PlatformId::kWindows, WindowsEncodingId::kUnicodeUCS2, WindowsLanguageId::kEnglish_UnitedStates, NameId::kFontFamilyName); UChar* name neb-name_entry()-Name(); // U_STRING_DECL(new_name, Timothy, 7); // neb-SetName(new_name); // Build the font. FontPtr font; font.Attach(font_builder-Build()); // auto digest font-digest(); // Serialize and reload the serialized font. MemoryOutputStream os; factory-SerializeFont(font, os); // ByteArrayPtr new_ba new MemoryByteArray(os.Get(), os.Size()); auto fileStream new unsigned char[os.Size()]; std::copy(os.Get(), os.Get() os.Size(), fileStream); int32_t nameLen u_strlen(name); auto asciiName new char[nameLen * 2]; u_austrncpy(asciiName, name, nameLen 1); // auto copyChar u_austrncpy(asciiName, name, nameLen 1); // auto asciiNameLen strlen(copyChar); // asciiName[asciiNameLen 1] \0; fontSubSetByteDatas.subsets[index].familyName asciiName; fontSubSetByteDatas.subsets[index].nameLength strnlen_s(asciiName, nameLen * 2); fontSubSetByteDatas.subsets[index].buffer fileStream; fontSubSetByteDatas.subsets[index].length os.Size(); delete[] name; } return fontSubSetByteDatas; } FONT_SUBSET_API FontSubSetByteDatas createSubsetFonts(const char* path) { using namespace sfntly; sfntly::FileInputStream is; if(!is.Open(path)) { std::cout path file open is fail std::endl; return {}; } std::shared_ptrvoid finally(nullptr, [is](...) { is.Close(); }); return createSubsetFonts(is); } FONT_SUBSET_API FontSubSetByteDatas createSubsetFonts(FontTTCByteData ttcSteam) { using namespace sfntly; sfntly::MemoryInputStream memoryInputStream; memoryInputStream.Attach(ttcSteam.buffer, ttcSteam.length); return createSubsetFonts(memoryInputStream); } FONT_SUBSET_API void releaseSubsetFonts(FontSubSetByteDatas datas) { for (int i 0; i datas.size; i) { delete[] datas.subsets[i].buffer; delete[] datas.subsets[i].familyName; } delete[] datas.subsets; } FONT_SUBSET_API bool isTTC(FontTTCByteData ttcSteam) { using namespace sfntly; sfntly::MemoryInputStream memoryInputStream; memoryInputStream.Attach(ttcSteam.buffer, ttcSteam.length); std::vectoruint8_t tag(4); memoryInputStream.Read(tag); memoryInputStream.Unread(tag); return Tag::ttcf GenerateTag(tag[0], tag[1], tag[2], tag[3]); } FONT_SUBSET_API std::string getFontFormat(FontTTCByteData ttcSteam) { using namespace sfntly; sfntly::MemoryInputStream memoryInputStream; memoryInputStream.Attach(ttcSteam.buffer, ttcSteam.length); std::vectoruint8_t tag(4, 0); memoryInputStream.Read(tag); memoryInputStream.Unread(tag); auto format GenerateTag(tag[0], tag[1], tag[2], tag[3]); if(0x00010000 format) return ttf; if(0x4f54544f format) return otf; return std::string((char*)tag[0], 4); }main.cpp#include parse.h #include iostream #include fstream int main() { const char* path C:\\Users\\Downloads\\msyh.ttc; auto fontDatas createSubsetFonts(path); if(0 fontDatas.size) { std::cout path parse fail! std::endl; return 1; } for (int i 0; i fontDatas.size; i) { // write file std::ofstream outFile((const char*)fontDatas.subsets[i].familyName, std::ios::binary); if (!outFile) { // error continue; } outFile.write(reinterpret_castconst char*(fontDatas.subsets[i].buffer), fontDatas.subsets[i].length * sizeof(uint8_t)); outFile.close(); } releaseSubsetFonts(fontDatas); return 0; }参考https://github.com/googlei18n/sfntlyhttps://pkg.go.dev/golang.org/x/image/font/sfnt#CollectionC字体库开发之字体列表十一-CSDN博客创作不易小小的支持一下吧