393 lines
8.7 KiB
C++
393 lines
8.7 KiB
C++
//========================================================================
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//
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// SplashFTFontEngine.cc
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//
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// Copyright 2003-2013 Glyph & Cog, LLC
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//
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//========================================================================
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#include <aconf.h>
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#if HAVE_FREETYPE_H
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#ifdef USE_GCC_PRAGMAS
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#pragma implementation
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#endif
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#include <stdio.h>
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#ifndef _WIN32
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# include <unistd.h>
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#endif
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#include "gmem.h"
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#include "gmempp.h"
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#include "GString.h"
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#include "gfile.h"
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#include "FoFiTrueType.h"
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#include "FoFiType1C.h"
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#include "SplashFTFontFile.h"
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#include "SplashFTFontEngine.h"
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#include FT_MODULE_H
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#ifdef FT_CFF_DRIVER_H
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# include FT_CFF_DRIVER_H
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#endif
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#ifdef VMS
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#if (__VMS_VER < 70000000)
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extern "C" int unlink(char *filename);
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#endif
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#endif
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//------------------------------------------------------------------------
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static void fileWrite(void *stream, const char *data, int len) {
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fwrite(data, 1, len, (FILE *)stream);
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}
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#if LOAD_FONTS_FROM_MEM
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static void gstringWrite(void *stream, const char *data, int len) {
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((GString *)stream)->append(data, len);
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}
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#endif
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//------------------------------------------------------------------------
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// SplashFTFontEngine
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//------------------------------------------------------------------------
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SplashFTFontEngine::SplashFTFontEngine(GBool aaA, Guint flagsA,
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FT_Library libA) {
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FT_Int major, minor, patch;
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aa = aaA;
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flags = flagsA;
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lib = libA;
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// as of FT 2.1.8, CID fonts are indexed by CID instead of GID
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FT_Library_Version(lib, &major, &minor, &patch);
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useCIDs = major > 2 ||
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(major == 2 && (minor > 1 || (minor == 1 && patch > 7)));
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}
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SplashFTFontEngine *SplashFTFontEngine::init(GBool aaA, Guint flagsA) {
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FT_Library libA;
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if (FT_Init_FreeType(&libA)) {
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return NULL;
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}
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return new SplashFTFontEngine(aaA, flagsA, libA);
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}
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SplashFTFontEngine::~SplashFTFontEngine() {
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FT_Done_FreeType(lib);
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}
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SplashFontFile *SplashFTFontEngine::loadType1Font(SplashFontFileID *idA,
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf,
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#else
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char *fileName,
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GBool deleteFile,
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#endif
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const char **enc) {
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return SplashFTFontFile::loadType1Font(this, idA, splashFontType1,
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#if LOAD_FONTS_FROM_MEM
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fontBuf,
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#else
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fileName, deleteFile,
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#endif
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enc);
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}
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SplashFontFile *SplashFTFontEngine::loadType1CFont(SplashFontFileID *idA,
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf,
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#else
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char *fileName,
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GBool deleteFile,
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#endif
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const char **enc) {
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return SplashFTFontFile::loadType1Font(this, idA, splashFontType1C,
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#if LOAD_FONTS_FROM_MEM
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fontBuf,
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#else
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fileName, deleteFile,
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#endif
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enc);
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}
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SplashFontFile *SplashFTFontEngine::loadOpenTypeT1CFont(SplashFontFileID *idA,
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf,
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#else
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char *fileName,
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GBool deleteFile,
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#endif
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const char **enc) {
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FoFiTrueType *ff;
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf2;
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#else
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GString *tmpFileName;
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FILE *tmpFile;
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#endif
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SplashFontFile *ret;
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#if LOAD_FONTS_FROM_MEM
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if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(),
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0, gTrue))) {
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#else
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if (!(ff = FoFiTrueType::load(fileName, 0, gTrue))) {
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#endif
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return NULL;
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}
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if (ff->isHeadlessCFF()) {
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#if LOAD_FONTS_FROM_MEM
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fontBuf2 = new GString();
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ff->convertToType1(NULL, enc, gFalse, &gstringWrite, fontBuf2);
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delete ff;
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ret = SplashFTFontFile::loadType1Font(this, idA, splashFontType1,
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fontBuf2, enc);
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if (ret) {
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delete fontBuf;
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} else {
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delete fontBuf2;
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}
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#else
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tmpFileName = NULL;
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if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
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delete ff;
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return NULL;
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}
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ff->convertToType1(NULL, enc, gFalse, &fileWrite, tmpFile);
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delete ff;
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fclose(tmpFile);
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ret = SplashFTFontFile::loadType1Font(this, idA, splashFontType1,
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tmpFileName->getCString(),
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gTrue, enc);
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if (ret) {
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if (deleteFile) {
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unlink(fileName);
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}
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} else {
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unlink(tmpFileName->getCString());
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}
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delete tmpFileName;
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#endif
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} else {
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delete ff;
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ret = SplashFTFontFile::loadType1Font(this, idA, splashFontOpenTypeT1C,
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#if LOAD_FONTS_FROM_MEM
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fontBuf,
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#else
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fileName, deleteFile,
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#endif
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enc);
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}
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return ret;
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}
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SplashFontFile *SplashFTFontEngine::loadCIDFont(SplashFontFileID *idA,
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf,
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#else
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char *fileName,
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GBool deleteFile,
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#endif
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int *codeToGID,
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int codeToGIDLen) {
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FoFiType1C *ff;
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int *cidToGIDMap;
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int nCIDs;
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SplashFontFile *ret;
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// check for a CFF font
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if (codeToGID) {
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cidToGIDMap = NULL;
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nCIDs = 0;
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} else if (useCIDs) {
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cidToGIDMap = NULL;
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nCIDs = 0;
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#if LOAD_FONTS_FROM_MEM
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} else if ((ff = FoFiType1C::make(fontBuf->getCString(),
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fontBuf->getLength()))) {
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#else
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} else if ((ff = FoFiType1C::load(fileName))) {
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#endif
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cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
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delete ff;
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} else {
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cidToGIDMap = NULL;
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nCIDs = 0;
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}
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ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontCID,
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#if LOAD_FONTS_FROM_MEM
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fontBuf,
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#else
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fileName, deleteFile,
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#endif
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codeToGID ? codeToGID : cidToGIDMap,
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codeToGID ? codeToGIDLen : nCIDs);
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if (!ret) {
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gfree(cidToGIDMap);
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}
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return ret;
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}
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SplashFontFile *SplashFTFontEngine::loadOpenTypeCFFFont(SplashFontFileID *idA,
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf,
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#else
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char *fileName,
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GBool deleteFile,
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#endif
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int *codeToGID,
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int codeToGIDLen) {
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FoFiTrueType *ff;
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf2;
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#else
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GString *tmpFileName;
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FILE *tmpFile;
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#endif
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char *cffStart;
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int cffLength;
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int *cidToGIDMap;
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int nCIDs;
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SplashFontFile *ret;
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#if LOAD_FONTS_FROM_MEM
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if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(),
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0, gTrue))) {
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#else
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if (!(ff = FoFiTrueType::load(fileName, 0, gTrue))) {
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#endif
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return NULL;
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}
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cidToGIDMap = NULL;
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nCIDs = 0;
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if (ff->isHeadlessCFF()) {
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if (!ff->getCFFBlock(&cffStart, &cffLength)) {
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return NULL;
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}
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#if LOAD_FONTS_FROM_MEM
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fontBuf2 = new GString(cffStart, cffLength);
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if (!useCIDs) {
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cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
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}
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ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF,
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fontBuf2, cidToGIDMap, nCIDs);
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if (ret) {
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delete fontBuf;
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} else {
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delete fontBuf2;
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}
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#else
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tmpFileName = NULL;
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if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
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delete ff;
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return NULL;
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}
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fwrite(cffStart, 1, cffLength, tmpFile);
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fclose(tmpFile);
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if (!useCIDs) {
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cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
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}
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ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF,
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tmpFileName->getCString(), gTrue,
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cidToGIDMap, nCIDs);
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if (ret) {
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if (deleteFile) {
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unlink(fileName);
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}
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} else {
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unlink(tmpFileName->getCString());
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}
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delete tmpFileName;
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#endif
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} else {
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if (!codeToGID && !useCIDs && ff->isOpenTypeCFF()) {
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cidToGIDMap = ff->getCIDToGIDMap(&nCIDs);
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}
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ret = SplashFTFontFile::loadCIDFont(this, idA, splashFontOpenTypeCFF,
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#if LOAD_FONTS_FROM_MEM
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fontBuf,
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#else
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fileName, deleteFile,
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#endif
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codeToGID ? codeToGID : cidToGIDMap,
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codeToGID ? codeToGIDLen : nCIDs);
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}
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delete ff;
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if (!ret) {
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gfree(cidToGIDMap);
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}
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return ret;
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}
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SplashFontFile *SplashFTFontEngine::loadTrueTypeFont(SplashFontFileID *idA,
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf,
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#else
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char *fileName,
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GBool deleteFile,
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#endif
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int fontNum,
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int *codeToGID,
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int codeToGIDLen) {
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FoFiTrueType *ff;
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#if LOAD_FONTS_FROM_MEM
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GString *fontBuf2;
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#else
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GString *tmpFileName;
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FILE *tmpFile;
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#endif
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SplashFontFile *ret;
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#if LOAD_FONTS_FROM_MEM
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if (!(ff = FoFiTrueType::make(fontBuf->getCString(), fontBuf->getLength(),
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fontNum))) {
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#else
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if (!(ff = FoFiTrueType::load(fileName, fontNum))) {
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#endif
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return NULL;
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}
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#if LOAD_FONTS_FROM_MEM
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fontBuf2 = new GString;
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ff->writeTTF(&gstringWrite, fontBuf2);
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#else
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tmpFileName = NULL;
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if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
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delete ff;
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return NULL;
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}
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ff->writeTTF(&fileWrite, tmpFile);
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fclose(tmpFile);
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#endif
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delete ff;
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ret = SplashFTFontFile::loadTrueTypeFont(this, idA, splashfontTrueType,
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#if LOAD_FONTS_FROM_MEM
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fontBuf2,
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#else
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tmpFileName->getCString(), gTrue,
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#endif
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0, codeToGID, codeToGIDLen);
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#if LOAD_FONTS_FROM_MEM
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if (ret) {
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delete fontBuf;
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} else {
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delete fontBuf2;
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}
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#else
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if (ret) {
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if (deleteFile) {
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unlink(fileName);
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}
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} else {
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unlink(tmpFileName->getCString());
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}
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delete tmpFileName;
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#endif
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return ret;
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}
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#endif // HAVE_FREETYPE_H
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