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Diffstat (limited to 'pdf/fofi/FoFiTrueType.cc')
| -rw-r--r-- | pdf/fofi/FoFiTrueType.cc | 1438 |
1 files changed, 0 insertions, 1438 deletions
diff --git a/pdf/fofi/FoFiTrueType.cc b/pdf/fofi/FoFiTrueType.cc deleted file mode 100644 index a4cf43c..0000000 --- a/pdf/fofi/FoFiTrueType.cc +++ /dev/null @@ -1,1438 +0,0 @@ -//======================================================================== -// -// FoFiTrueType.cc -// -// Copyright 1999-2003 Glyph & Cog, LLC -// -//======================================================================== - -#include <aconf.h> - -#ifdef USE_GCC_PRAGMAS -#pragma implementation -#endif - -#include <stdlib.h> -#include "gtypes.h" -#include "gmem.h" -#include "GString.h" -#include "GHash.h" -#include "FoFiTrueType.h" - -// -// Terminology -// ----------- -// -// character code = number used as an element of a text string -// -// character name = glyph name = name for a particular glyph within a -// font -// -// glyph index = GID = position (within some internal table in the font) -// where the instructions to draw a particular glyph are -// stored -// -// Type 1 fonts -// ------------ -// -// Type 1 fonts contain: -// -// Encoding: array of glyph names, maps char codes to glyph names -// -// Encoding[charCode] = charName -// -// CharStrings: dictionary of instructions, keyed by character names, -// maps character name to glyph data -// -// CharStrings[charName] = glyphData -// -// TrueType fonts -// -------------- -// -// TrueType fonts contain: -// -// 'cmap' table: mapping from character code to glyph index; there may -// be multiple cmaps in a TrueType font -// -// cmap[charCode] = gid -// -// 'post' table: mapping from glyph index to glyph name -// -// post[gid] = glyphName -// -// Type 42 fonts -// ------------- -// -// Type 42 fonts contain: -// -// Encoding: array of glyph names, maps char codes to glyph names -// -// Encoding[charCode] = charName -// -// CharStrings: dictionary of glyph indexes, keyed by character names, -// maps character name to glyph index -// -// CharStrings[charName] = gid -// - -//------------------------------------------------------------------------ - -struct TrueTypeTable { - Guint tag; - Guint checksum; - int offset; - int origOffset; - int len; -}; - -struct TrueTypeCmap { - int platform; - int encoding; - int offset; - int len; - int fmt; -}; - -struct TrueTypeLoca { - int idx; - int origOffset; - int newOffset; - int len; -}; - -#define cmapTag 0x636d6170 -#define glyfTag 0x676c7966 -#define locaTag 0x6c6f6361 -#define nameTag 0x6e616d65 -#define postTag 0x706f7374 - -static int cmpTrueTypeLocaOffset(const void *p1, const void *p2) { - TrueTypeLoca *loca1 = (TrueTypeLoca *)p1; - TrueTypeLoca *loca2 = (TrueTypeLoca *)p2; - - if (loca1->origOffset == loca2->origOffset) { - return loca1->idx - loca2->idx; - } - return loca1->origOffset - loca2->origOffset; -} - -static int cmpTrueTypeLocaIdx(const void *p1, const void *p2) { - TrueTypeLoca *loca1 = (TrueTypeLoca *)p1; - TrueTypeLoca *loca2 = (TrueTypeLoca *)p2; - - return loca1->idx - loca2->idx; -} - -static int cmpTrueTypeTableTag(const void *p1, const void *p2) { - TrueTypeTable *tab1 = (TrueTypeTable *)p1; - TrueTypeTable *tab2 = (TrueTypeTable *)p2; - - return (int)tab1->tag - (int)tab2->tag; -} - -//------------------------------------------------------------------------ - -struct T42Table { - char *tag; // 4-byte tag - GBool required; // required by the TrueType spec? -}; - -// TrueType tables to be embedded in Type 42 fonts. -// NB: the table names must be in alphabetical order here. -#define nT42Tables 11 -static T42Table t42Tables[nT42Tables] = { - { "cvt ", gTrue }, - { "fpgm", gTrue }, - { "glyf", gTrue }, - { "head", gTrue }, - { "hhea", gTrue }, - { "hmtx", gTrue }, - { "loca", gTrue }, - { "maxp", gTrue }, - { "prep", gTrue }, - { "vhea", gFalse }, - { "vmtx", gFalse } -}; -#define t42HeadTable 3 -#define t42LocaTable 6 -#define t42GlyfTable 2 - -//------------------------------------------------------------------------ - -// Glyph names in some arbitrary standard order that Apple uses for -// their TrueType fonts. -static char *macGlyphNames[258] = { - ".notdef", "null", "CR", "space", - "exclam", "quotedbl", "numbersign", "dollar", - "percent", "ampersand", "quotesingle", "parenleft", - "parenright", "asterisk", "plus", "comma", - "hyphen", "period", "slash", "zero", - "one", "two", "three", "four", - "five", "six", "seven", "eight", - "nine", "colon", "semicolon", "less", - "equal", "greater", "question", "at", - "A", "B", "C", "D", - "E", "F", "G", "H", - "I", "J", "K", "L", - "M", "N", "O", "P", - "Q", "R", "S", "T", - "U", "V", "W", "X", - "Y", "Z", "bracketleft", "backslash", - "bracketright", "asciicircum", "underscore", "grave", - "a", "b", "c", "d", - "e", "f", "g", "h", - "i", "j", "k", "l", - "m", "n", "o", "p", - "q", "r", "s", "t", - "u", "v", "w", "x", - "y", "z", "braceleft", "bar", - "braceright", "asciitilde", "Adieresis", "Aring", - "Ccedilla", "Eacute", "Ntilde", "Odieresis", - "Udieresis", "aacute", "agrave", "acircumflex", - "adieresis", "atilde", "aring", "ccedilla", - "eacute", "egrave", "ecircumflex", "edieresis", - "iacute", "igrave", "icircumflex", "idieresis", - "ntilde", "oacute", "ograve", "ocircumflex", - "odieresis", "otilde", "uacute", "ugrave", - "ucircumflex", "udieresis", "dagger", "degree", - "cent", "sterling", "section", "bullet", - "paragraph", "germandbls", "registered", "copyright", - "trademark", "acute", "dieresis", "notequal", - "AE", "Oslash", "infinity", "plusminus", - "lessequal", "greaterequal", "yen", "mu1", - "partialdiff", "summation", "product", "pi", - "integral", "ordfeminine", "ordmasculine", "Ohm", - "ae", "oslash", "questiondown", "exclamdown", - "logicalnot", "radical", "florin", "approxequal", - "increment", "guillemotleft", "guillemotright", "ellipsis", - "nbspace", "Agrave", "Atilde", "Otilde", - "OE", "oe", "endash", "emdash", - "quotedblleft", "quotedblright", "quoteleft", "quoteright", - "divide", "lozenge", "ydieresis", "Ydieresis", - "fraction", "currency", "guilsinglleft", "guilsinglright", - "fi", "fl", "daggerdbl", "periodcentered", - "quotesinglbase", "quotedblbase", "perthousand", "Acircumflex", - "Ecircumflex", "Aacute", "Edieresis", "Egrave", - "Iacute", "Icircumflex", "Idieresis", "Igrave", - "Oacute", "Ocircumflex", "applelogo", "Ograve", - "Uacute", "Ucircumflex", "Ugrave", "dotlessi", - "circumflex", "tilde", "overscore", "breve", - "dotaccent", "ring", "cedilla", "hungarumlaut", - "ogonek", "caron", "Lslash", "lslash", - "Scaron", "scaron", "Zcaron", "zcaron", - "brokenbar", "Eth", "eth", "Yacute", - "yacute", "Thorn", "thorn", "minus", - "multiply", "onesuperior", "twosuperior", "threesuperior", - "onehalf", "onequarter", "threequarters", "franc", - "Gbreve", "gbreve", "Idot", "Scedilla", - "scedilla", "Cacute", "cacute", "Ccaron", - "ccaron", "dmacron" -}; - -//------------------------------------------------------------------------ -// FoFiTrueType -//------------------------------------------------------------------------ - -FoFiTrueType *FoFiTrueType::make(char *fileA, int lenA) { - FoFiTrueType *ff; - - ff = new FoFiTrueType(fileA, lenA, gFalse); - if (!ff->parsedOk) { - delete ff; - return NULL; - } - return ff; -} - -FoFiTrueType *FoFiTrueType::load(char *fileName) { - FoFiTrueType *ff; - char *fileA; - int lenA; - - if (!(fileA = FoFiBase::readFile(fileName, &lenA))) { - return NULL; - } - ff = new FoFiTrueType(fileA, lenA, gTrue); - if (!ff->parsedOk) { - delete ff; - return NULL; - } - return ff; -} - -FoFiTrueType::FoFiTrueType(char *fileA, int lenA, GBool freeFileDataA): - FoFiBase(fileA, lenA, freeFileDataA) -{ - tables = NULL; - nTables = 0; - cmaps = NULL; - nCmaps = 0; - nameToGID = NULL; - parsedOk = gFalse; - - parse(); -} - -FoFiTrueType::~FoFiTrueType() { - gfree(tables); - gfree(cmaps); - delete nameToGID; -} - -int FoFiTrueType::getNumCmaps() { - return nCmaps; -} - -int FoFiTrueType::getCmapPlatform(int i) { - return cmaps[i].platform; -} - -int FoFiTrueType::getCmapEncoding(int i) { - return cmaps[i].encoding; -} - -int FoFiTrueType::findCmap(int platform, int encoding) { - int i; - - for (i = 0; i < nCmaps; ++i) { - if (cmaps[i].platform == platform && cmaps[i].encoding == encoding) { - return i; - } - } - return -1; -} - -Gushort FoFiTrueType::mapCodeToGID(int i, int c) { - Gushort gid; - int segCnt, segEnd, segStart, segDelta, segOffset; - int cmapFirst, cmapLen; - int pos, a, b, m; - GBool ok; - - if (i < 0 || i >= nCmaps) { - return 0; - } - ok = gTrue; - pos = cmaps[i].offset; - switch (cmaps[i].fmt) { - case 0: - if (c < 0 || c >= cmaps[i].len - 6) { - return 0; - } - gid = getU8(cmaps[i].offset + 6 + c, &ok); - break; - case 4: - segCnt = getU16BE(pos + 6, &ok) / 2; - a = -1; - b = segCnt - 1; - segEnd = getU16BE(pos + 14 + 2*b, &ok); - if (c > segEnd) { - // malformed font -- the TrueType spec requires the last segEnd - // to be 0xffff - return 0; - } - // invariant: seg[a].end < code <= seg[b].end - while (b - a > 1 && ok) { - m = (a + b) / 2; - segEnd = getU16BE(pos + 14 + 2*m, &ok); - if (segEnd < c) { - a = m; - } else { - b = m; - } - } - segStart = getU16BE(pos + 16 + 2*segCnt + 2*b, &ok); - segDelta = getU16BE(pos + 16 + 4*segCnt + 2*b, &ok); - segOffset = getU16BE(pos + 16 + 6*segCnt + 2*b, &ok); - if (c < segStart) { - return 0; - } - if (segOffset == 0) { - gid = (c + segDelta) & 0xffff; - } else { - gid = getU16BE(pos + 16 + 6*segCnt + 2*b + - segOffset + 2 * (c - segStart), &ok); - if (gid != 0) { - gid = (gid + segDelta) & 0xffff; - } - } - break; - case 6: - cmapFirst = getU16BE(pos + 6, &ok); - cmapLen = getU16BE(pos + 8, &ok); - if (c < cmapFirst || c >= cmapFirst + cmapLen) { - return 0; - } - gid = getU16BE(pos + 10 + 2 * (c - cmapFirst), &ok); - break; - default: - return 0; - } - if (!ok) { - return 0; - } - return gid; -} - -int FoFiTrueType::mapNameToGID(char *name) { - if (!nameToGID) { - return 0; - } - return nameToGID->lookupInt(name); -} - -int FoFiTrueType::getEmbeddingRights() { - int i, fsType; - GBool ok; - - if ((i = seekTable("OS/2")) < 0) { - return 4; - } - ok = gTrue; - fsType = getU16BE(tables[i].offset + 8, &ok); - if (!ok) { - return 4; - } - if (fsType & 0x0008) { - return 2; - } - if (fsType & 0x0004) { - return 1; - } - if (fsType & 0x0002) { - return 0; - } - return 3; -} - -void FoFiTrueType::convertToType42(char *psName, char **encoding, - Gushort *codeToGID, - FoFiOutputFunc outputFunc, - void *outputStream) { - char buf[512]; - GBool ok; - - // write the header - ok = gTrue; - sprintf(buf, "%%!PS-TrueTypeFont-%g\n", (double)getS32BE(0, &ok) / 65536.0); - (*outputFunc)(outputStream, buf, strlen(buf)); - - // begin the font dictionary - (*outputFunc)(outputStream, "10 dict begin\n", 14); - (*outputFunc)(outputStream, "/FontName /", 11); - (*outputFunc)(outputStream, psName, strlen(psName)); - (*outputFunc)(outputStream, " def\n", 5); - (*outputFunc)(outputStream, "/FontType 42 def\n", 17); - (*outputFunc)(outputStream, "/FontMatrix [1 0 0 1 0 0] def\n", 30); - sprintf(buf, "/FontBBox [%d %d %d %d] def\n", - bbox[0], bbox[1], bbox[2], bbox[3]); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, "/PaintType 0 def\n", 17); - - // write the guts of the dictionary - cvtEncoding(encoding, outputFunc, outputStream); - cvtCharStrings(encoding, codeToGID, outputFunc, outputStream); - cvtSfnts(outputFunc, outputStream, NULL); - - // end the dictionary and define the font - (*outputFunc)(outputStream, "FontName currentdict end definefont pop\n", 40); -} - -void FoFiTrueType::convertToCIDType2(char *psName, - Gushort *cidMap, int nCIDs, - FoFiOutputFunc outputFunc, - void *outputStream) { - char buf[512]; - Gushort cid; - GBool ok; - int i, j, k; - - // write the header - ok = gTrue; - sprintf(buf, "%%!PS-TrueTypeFont-%g\n", (double)getS32BE(0, &ok) / 65536.0); - (*outputFunc)(outputStream, buf, strlen(buf)); - - // begin the font dictionary - (*outputFunc)(outputStream, "20 dict begin\n", 14); - (*outputFunc)(outputStream, "/CIDFontName /", 14); - (*outputFunc)(outputStream, psName, strlen(psName)); - (*outputFunc)(outputStream, " def\n", 5); - (*outputFunc)(outputStream, "/CIDFontType 2 def\n", 19); - (*outputFunc)(outputStream, "/FontType 42 def\n", 17); - (*outputFunc)(outputStream, "/CIDSystemInfo 3 dict dup begin\n", 32); - (*outputFunc)(outputStream, " /Registry (Adobe) def\n", 24); - (*outputFunc)(outputStream, " /Ordering (Identity) def\n", 27); - (*outputFunc)(outputStream, " /Supplement 0 def\n", 20); - (*outputFunc)(outputStream, " end def\n", 10); - (*outputFunc)(outputStream, "/GDBytes 2 def\n", 15); - if (cidMap) { - sprintf(buf, "/CIDCount %d def\n", nCIDs); - (*outputFunc)(outputStream, buf, strlen(buf)); - if (nCIDs > 32767) { - (*outputFunc)(outputStream, "/CIDMap [", 9); - for (i = 0; i < nCIDs; i += 32768 - 16) { - (*outputFunc)(outputStream, "<\n", 2); - for (j = 0; j < 32768 - 16 && i+j < nCIDs; j += 16) { - (*outputFunc)(outputStream, " ", 2); - for (k = 0; k < 16 && i+j+k < nCIDs; ++k) { - cid = cidMap[i+j+k]; - sprintf(buf, "%02x%02x", (cid >> 8) & 0xff, cid & 0xff); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - (*outputFunc)(outputStream, "\n", 1); - } - (*outputFunc)(outputStream, " >", 3); - } - (*outputFunc)(outputStream, "\n", 1); - (*outputFunc)(outputStream, "] def\n", 6); - } else { - (*outputFunc)(outputStream, "/CIDMap <\n", 10); - for (i = 0; i < nCIDs; i += 16) { - (*outputFunc)(outputStream, " ", 2); - for (j = 0; j < 16 && i+j < nCIDs; ++j) { - cid = cidMap[i+j]; - sprintf(buf, "%02x%02x", (cid >> 8) & 0xff, cid & 0xff); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - (*outputFunc)(outputStream, "\n", 1); - } - (*outputFunc)(outputStream, "> def\n", 6); - } - } else { - // direct mapping - just fill the string(s) with s[i]=i - sprintf(buf, "/CIDCount %d def\n", nGlyphs); - (*outputFunc)(outputStream, buf, strlen(buf)); - if (nGlyphs > 32767) { - (*outputFunc)(outputStream, "/CIDMap [\n", 10); - for (i = 0; i < nGlyphs; i += 32767) { - j = nGlyphs - i < 32767 ? nGlyphs - i : 32767; - sprintf(buf, " %d string 0 1 %d {\n", 2 * j, j - 1); - (*outputFunc)(outputStream, buf, strlen(buf)); - sprintf(buf, " 2 copy dup 2 mul exch %d add -8 bitshift put\n", i); - (*outputFunc)(outputStream, buf, strlen(buf)); - sprintf(buf, " 1 index exch dup 2 mul 1 add exch %d add" - " 255 and put\n", i); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, " } for\n", 8); - } - (*outputFunc)(outputStream, "] def\n", 6); - } else { - sprintf(buf, "/CIDMap %d string\n", 2 * nGlyphs); - (*outputFunc)(outputStream, buf, strlen(buf)); - sprintf(buf, " 0 1 %d {\n", nGlyphs - 1); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, - " 2 copy dup 2 mul exch -8 bitshift put\n", 42); - (*outputFunc)(outputStream, - " 1 index exch dup 2 mul 1 add exch 255 and put\n", 50); - (*outputFunc)(outputStream, " } for\n", 8); - (*outputFunc)(outputStream, "def\n", 4); - } - } - (*outputFunc)(outputStream, "/FontMatrix [1 0 0 1 0 0] def\n", 30); - sprintf(buf, "/FontBBox [%d %d %d %d] def\n", - bbox[0], bbox[1], bbox[2], bbox[3]); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, "/PaintType 0 def\n", 17); - (*outputFunc)(outputStream, "/Encoding [] readonly def\n", 26); - (*outputFunc)(outputStream, "/CharStrings 1 dict dup begin\n", 30); - (*outputFunc)(outputStream, " /.notdef 0 def\n", 17); - (*outputFunc)(outputStream, " end readonly def\n", 19); - - // write the guts of the dictionary - cvtSfnts(outputFunc, outputStream, NULL); - - // end the dictionary and define the font - (*outputFunc)(outputStream, - "CIDFontName currentdict end /CIDFont defineresource pop\n", - 56); -} - -void FoFiTrueType::convertToType0(char *psName, Gushort *cidMap, int nCIDs, - FoFiOutputFunc outputFunc, - void *outputStream) { - char buf[512]; - GString *sfntsName; - int n, i, j; - - // write the Type 42 sfnts array - sfntsName = (new GString(psName))->append("_sfnts"); - cvtSfnts(outputFunc, outputStream, sfntsName); - delete sfntsName; - - // write the descendant Type 42 fonts - n = cidMap ? nCIDs : nGlyphs; - for (i = 0; i < n; i += 256) { - (*outputFunc)(outputStream, "10 dict begin\n", 14); - (*outputFunc)(outputStream, "/FontName /", 11); - (*outputFunc)(outputStream, psName, strlen(psName)); - sprintf(buf, "_%02x def\n", i >> 8); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, "/FontType 42 def\n", 17); - (*outputFunc)(outputStream, "/FontMatrix [1 0 0 1 0 0] def\n", 30); - sprintf(buf, "/FontBBox [%d %d %d %d] def\n", - bbox[0], bbox[1], bbox[2], bbox[3]); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, "/PaintType 0 def\n", 17); - (*outputFunc)(outputStream, "/sfnts ", 7); - (*outputFunc)(outputStream, psName, strlen(psName)); - (*outputFunc)(outputStream, "_sfnts def\n", 11); - (*outputFunc)(outputStream, "/Encoding 256 array\n", 20); - for (j = 0; j < 256 && i+j < n; ++j) { - sprintf(buf, "dup %d /c%02x put\n", j, j); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - (*outputFunc)(outputStream, "readonly def\n", 13); - (*outputFunc)(outputStream, "/CharStrings 257 dict dup begin\n", 32); - (*outputFunc)(outputStream, "/.notdef 0 def\n", 15); - for (j = 0; j < 256 && i+j < n; ++j) { - sprintf(buf, "/c%02x %d def\n", j, cidMap ? cidMap[i+j] : i+j); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - (*outputFunc)(outputStream, "end readonly def\n", 17); - (*outputFunc)(outputStream, - "FontName currentdict end definefont pop\n", 40); - } - - // write the Type 0 parent font - (*outputFunc)(outputStream, "16 dict begin\n", 14); - (*outputFunc)(outputStream, "/FontName /", 11); - (*outputFunc)(outputStream, psName, strlen(psName)); - (*outputFunc)(outputStream, " def\n", 5); - (*outputFunc)(outputStream, "/FontType 0 def\n", 16); - (*outputFunc)(outputStream, "/FontMatrix [1 0 0 1 0 0] def\n", 30); - (*outputFunc)(outputStream, "/FMapType 2 def\n", 16); - (*outputFunc)(outputStream, "/Encoding [\n", 12); - for (i = 0; i < n; i += 256) { - sprintf(buf, "%d\n", i >> 8); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - (*outputFunc)(outputStream, "] def\n", 6); - (*outputFunc)(outputStream, "/FDepVector [\n", 14); - for (i = 0; i < n; i += 256) { - (*outputFunc)(outputStream, "/", 1); - (*outputFunc)(outputStream, psName, strlen(psName)); - sprintf(buf, "_%02x findfont\n", i >> 8); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - (*outputFunc)(outputStream, "] def\n", 6); - (*outputFunc)(outputStream, "FontName currentdict end definefont pop\n", 40); -} - -void FoFiTrueType::writeTTF(FoFiOutputFunc outputFunc, - void *outputStream) { - static char cmapTab[20] = { - 0, 0, // table version number - 0, 1, // number of encoding tables - 0, 1, // platform ID - 0, 0, // encoding ID - 0, 0, 0, 12, // offset of subtable - 0, 0, // subtable format - 0, 1, // subtable length - 0, 1, // subtable version - 0, // map char 0 -> glyph 0 - 0 // pad to multiple of four bytes - }; - static char nameTab[8] = { - 0, 0, // format - 0, 0, // number of name records - 0, 6, // offset to start of string storage - 0, 0 // pad to multiple of four bytes - }; - static char postTab[32] = { - 0, 1, 0, 0, // format - 0, 0, 0, 0, // italic angle - 0, 0, // underline position - 0, 0, // underline thickness - 0, 0, 0, 0, // fixed pitch - 0, 0, 0, 0, // min Type 42 memory - 0, 0, 0, 0, // max Type 42 memory - 0, 0, 0, 0, // min Type 1 memory - 0, 0, 0, 0 // max Type 1 memory - }; - GBool missingCmap, missingName, missingPost, unsortedLoca, badCmapLen; - int nZeroLengthTables; - TrueTypeLoca *locaTable; - TrueTypeTable *newTables; - int nNewTables, cmapIdx, cmapLen, glyfLen; - char *tableDir; - char locaBuf[4]; - GBool ok; - Guint t; - int pos, i, j, k, n; - - // check for missing tables - missingCmap = (cmapIdx = seekTable("cmap")) < 0; - missingName = seekTable("name") < 0; - missingPost = seekTable("post") < 0; - - // read the loca table, check to see if it's sorted - locaTable = (TrueTypeLoca *)gmalloc((nGlyphs + 1) * sizeof(TrueTypeLoca)); - unsortedLoca = gFalse; - i = seekTable("loca"); - pos = tables[i].offset; - ok = gTrue; - for (i = 0; i <= nGlyphs; ++i) { - if (locaFmt) { - locaTable[i].origOffset = (int)getU32BE(pos + i*4, &ok); - } else { - locaTable[i].origOffset = 2 * getU16BE(pos + i*2, &ok); - } - if (i > 0 && locaTable[i].origOffset < locaTable[i-1].origOffset) { - unsortedLoca = gTrue; - } - locaTable[i].idx = i; - } - - // check for zero-length tables - nZeroLengthTables = 0; - for (i = 0; i < nTables; ++i) { - if (tables[i].len == 0) { - ++nZeroLengthTables; - } - } - - // check for an incorrect cmap table length - badCmapLen = gFalse; - cmapLen = 0; // make gcc happy - if (!missingCmap) { - cmapLen = cmaps[0].offset + cmaps[0].len; - for (i = 1; i < nCmaps; ++i) { - if (cmaps[i].offset + cmaps[i].len > cmapLen) { - cmapLen = cmaps[i].offset + cmaps[i].len; - } - } - cmapLen -= tables[cmapIdx].offset; - if (cmapLen > tables[cmapIdx].len) { - badCmapLen = gTrue; - } - } - - // if nothing is broken, just write the TTF file as is - if (!missingCmap && !missingName && !missingPost && !unsortedLoca && - !badCmapLen && nZeroLengthTables == 0) { - (*outputFunc)(outputStream, (char *)file, len); - goto done1; - } - - // sort the 'loca' table: some (non-compliant) fonts have - // out-of-order loca tables; in order to correctly handle the case - // where (compliant) fonts have empty entries in the middle of the - // table, cmpTrueTypeLocaOffset uses offset as its primary sort key, - // and idx as its secondary key (ensuring that adjacent entries with - // the same pos value remain in the same order) - glyfLen = 0; // make gcc happy - if (unsortedLoca) { - qsort(locaTable, nGlyphs + 1, sizeof(TrueTypeLoca), - &cmpTrueTypeLocaOffset); - for (i = 0; i < nGlyphs; ++i) { - locaTable[i].len = locaTable[i+1].origOffset - locaTable[i].origOffset; - } - locaTable[nGlyphs].len = 0; - qsort(locaTable, nGlyphs + 1, sizeof(TrueTypeLoca), - &cmpTrueTypeLocaIdx); - pos = 0; - for (i = 0; i <= nGlyphs; ++i) { - locaTable[i].newOffset = pos; - pos += locaTable[i].len; - if (pos & 3) { - pos += 4 - (pos & 3); - } - } - glyfLen = pos; - } - - // construct the new table directory: - // - keep all original tables with non-zero length - // - fix the cmap table's length, if necessary - // - add missing tables - // - sort the table by tag - // - compute new table positions, including 4-byte alignment - nNewTables = nTables - nZeroLengthTables + - (missingCmap ? 1 : 0) + (missingName ? 1 : 0) + - (missingPost ? 1 : 0); - newTables = (TrueTypeTable *)gmalloc(nNewTables * sizeof(TrueTypeTable)); - j = 0; - for (i = 0; i < nTables; ++i) { - if (tables[i].len > 0) { - newTables[j] = tables[i]; - newTables[j].origOffset = tables[i].offset; - if (newTables[j].tag == cmapTag && badCmapLen) { - newTables[j].len = cmapLen; - } else if (newTables[j].tag == locaTag && unsortedLoca) { - newTables[j].len = (nGlyphs + 1) * (locaFmt ? 4 : 2); - } else if (newTables[j].tag == glyfTag && unsortedLoca) { - newTables[j].len = glyfLen; - } - ++j; - } - } - if (missingCmap) { - newTables[j].tag = cmapTag; - newTables[j].checksum = 0; //~ should compute the checksum - newTables[j].len = sizeof(cmapTab); - ++j; - } - if (missingName) { - newTables[j].tag = nameTag; - newTables[j].checksum = 0; //~ should compute the checksum - newTables[j].len = sizeof(nameTab); - ++j; - } - if (missingPost) { - newTables[j].tag = postTag; - newTables[j].checksum = 0; //~ should compute the checksum - newTables[j].len = sizeof(postTab); - ++j; - } - qsort(newTables, nNewTables, sizeof(TrueTypeTable), - &cmpTrueTypeTableTag); - pos = 12 + nNewTables * 16; - for (i = 0; i < nNewTables; ++i) { - newTables[i].offset = pos; - pos += newTables[i].len; - if (pos & 3) { - pos += 4 - (pos & 3); - } - } - - // write the table directory - tableDir = (char *)gmalloc(12 + nNewTables * 16); - tableDir[0] = 0x00; // sfnt version - tableDir[1] = 0x01; - tableDir[2] = 0x00; - tableDir[3] = 0x00; - tableDir[4] = (char)((nNewTables >> 8) & 0xff); // numTables - tableDir[5] = (char)(nNewTables & 0xff); - for (i = -1, t = (Guint)nNewTables; t; ++i, t >>= 1) ; - t = 1 << (4 + i); - tableDir[6] = (char)((t >> 8) & 0xff); // searchRange - tableDir[7] = (char)(t & 0xff); - tableDir[8] = (char)((i >> 8) & 0xff); // entrySelector - tableDir[9] = (char)(i & 0xff); - t = nNewTables * 16 - t; - tableDir[10] = (char)((t >> 8) & 0xff); // rangeShift - tableDir[11] = (char)(t & 0xff); - pos = 12; - for (i = 0; i < nNewTables; ++i) { - tableDir[pos ] = (char)(newTables[i].tag >> 24); - tableDir[pos+ 1] = (char)(newTables[i].tag >> 16); - tableDir[pos+ 2] = (char)(newTables[i].tag >> 8); - tableDir[pos+ 3] = (char) newTables[i].tag; - tableDir[pos+ 4] = (char)(newTables[i].checksum >> 24); - tableDir[pos+ 5] = (char)(newTables[i].checksum >> 16); - tableDir[pos+ 6] = (char)(newTables[i].checksum >> 8); - tableDir[pos+ 7] = (char) newTables[i].checksum; - tableDir[pos+ 8] = (char)(newTables[i].offset >> 24); - tableDir[pos+ 9] = (char)(newTables[i].offset >> 16); - tableDir[pos+10] = (char)(newTables[i].offset >> 8); - tableDir[pos+11] = (char) newTables[i].offset; - tableDir[pos+12] = (char)(newTables[i].len >> 24); - tableDir[pos+13] = (char)(newTables[i].len >> 16); - tableDir[pos+14] = (char)(newTables[i].len >> 8); - tableDir[pos+15] = (char) newTables[i].len; - pos += 16; - } - (*outputFunc)(outputStream, tableDir, 12 + nNewTables * 16); - - // write the tables - for (i = 0; i < nNewTables; ++i) { - if (newTables[i].tag == cmapTag && missingCmap) { - (*outputFunc)(outputStream, cmapTab, newTables[i].len); - } else if (newTables[i].tag == nameTag && missingName) { - (*outputFunc)(outputStream, nameTab, newTables[i].len); - } else if (newTables[i].tag == postTag && missingPost) { - (*outputFunc)(outputStream, postTab, newTables[i].len); - } else if (newTables[i].tag == locaTag && unsortedLoca) { - for (j = 0; j <= nGlyphs; ++j) { - if (locaFmt) { - locaBuf[0] = (char)(locaTable[j].newOffset >> 24); - locaBuf[1] = (char)(locaTable[j].newOffset >> 16); - locaBuf[2] = (char)(locaTable[j].newOffset >> 8); - locaBuf[3] = (char) locaTable[j].newOffset; - (*outputFunc)(outputStream, locaBuf, 4); - } else { - locaBuf[0] = (char)(locaTable[j].newOffset >> 9); - locaBuf[1] = (char)(locaTable[j].newOffset >> 1); - (*outputFunc)(outputStream, locaBuf, 2); - } - } - } else if (newTables[i].tag == glyfTag && unsortedLoca) { - pos = tables[seekTable("glyf")].offset; - for (j = 0; j < nGlyphs; ++j) { - n = locaTable[j].len; - if (n > 0) { - k = locaTable[j].origOffset; - if (checkRegion(pos + k, n)) { - (*outputFunc)(outputStream, (char *)file + pos + k, n); - } else { - for (k = 0; k < n; ++k) { - (*outputFunc)(outputStream, "\0", 1); - } - } - if ((k = locaTable[j].len & 3)) { - (*outputFunc)(outputStream, "\0\0\0\0", 4 - k); - } - } - } - } else { - if (checkRegion(newTables[i].origOffset, newTables[i].len)) { - (*outputFunc)(outputStream, (char *)file + newTables[i].origOffset, - newTables[i].len); - } else { - for (j = 0; j < newTables[i].len; ++j) { - (*outputFunc)(outputStream, "\0", 1); - } - } - } - if (newTables[i].len & 3) { - (*outputFunc)(outputStream, "\0\0\0", 4 - (newTables[i].len & 3)); - } - } - - gfree(tableDir); - gfree(newTables); - done1: - gfree(locaTable); -} - -void FoFiTrueType::cvtEncoding(char **encoding, - FoFiOutputFunc outputFunc, - void *outputStream) { - char *name; - char buf[64]; - int i; - - (*outputFunc)(outputStream, "/Encoding 256 array\n", 20); - if (encoding) { - for (i = 0; i < 256; ++i) { - if (!(name = encoding[i])) { - name = ".notdef"; - } - sprintf(buf, "dup %d /", i); - (*outputFunc)(outputStream, buf, strlen(buf)); - (*outputFunc)(outputStream, name, strlen(name)); - (*outputFunc)(outputStream, " put\n", 5); - } - } else { - for (i = 0; i < 256; ++i) { - sprintf(buf, "dup %d /c%02x put\n", i, i); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - } - (*outputFunc)(outputStream, "readonly def\n", 13); -} - -void FoFiTrueType::cvtCharStrings(char **encoding, - Gushort *codeToGID, - FoFiOutputFunc outputFunc, - void *outputStream) { - char *name; - char buf[64], buf2[16]; - int i, k; - - // always define '.notdef' - (*outputFunc)(outputStream, "/CharStrings 256 dict dup begin\n", 32); - (*outputFunc)(outputStream, "/.notdef 0 def\n", 15); - - // if there's no 'cmap' table, punt - if (nCmaps == 0) { - goto err; - } - - // map char name to glyph index: - // 1. use encoding to map name to char code - // 2. use codeToGID to map char code to glyph index - // N.B. We do this in reverse order because font subsets can have - // weird encodings that use the same character name twice, and - // the first definition is probably the one we want. - k = 0; // make gcc happy - for (i = 255; i >= 0; --i) { - if (encoding) { - name = encoding[i]; - } else { - sprintf(buf2, "c%02x", i); - name = buf2; - } - if (name && strcmp(name, ".notdef")) { - k = codeToGID[i]; - // note: Distiller (maybe Adobe's PS interpreter in general) - // doesn't like TrueType fonts that have CharStrings entries - // which point to nonexistent glyphs, hence the (k < nGlyphs) - // test - if (k > 0 && k < nGlyphs) { - (*outputFunc)(outputStream, "/", 1); - (*outputFunc)(outputStream, name, strlen(name)); - sprintf(buf, " %d def\n", k); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - } - } - - err: - (*outputFunc)(outputStream, "end readonly def\n", 17); -} - -void FoFiTrueType::cvtSfnts(FoFiOutputFunc outputFunc, - void *outputStream, GString *name) { - Guchar headData[54]; - TrueTypeLoca *locaTable; - Guchar *locaData; - TrueTypeTable newTables[nT42Tables]; - Guchar tableDir[12 + nT42Tables*16]; - GBool ok; - Guint checksum; - int nNewTables; - int length, pos, glyfPos, i, j, k; - - // construct the 'head' table, zero out the font checksum - i = seekTable("head"); - pos = tables[i].offset; - if (!checkRegion(pos, 54)) { - return; - } - memcpy(headData, file + pos, 54); - headData[8] = headData[9] = headData[10] = headData[11] = (Guchar)0; - - // read the original 'loca' table, pad entries out to 4 bytes, and - // sort it into proper order -- some (non-compliant) fonts have - // out-of-order loca tables; in order to correctly handle the case - // where (compliant) fonts have empty entries in the middle of the - // table, cmpTrueTypeLocaPos uses offset as its primary sort key, - // and idx as its secondary key (ensuring that adjacent entries with - // the same pos value remain in the same order) - locaTable = (TrueTypeLoca *)gmalloc((nGlyphs + 1) * sizeof(TrueTypeLoca)); - i = seekTable("loca"); - pos = tables[i].offset; - ok = gTrue; - for (i = 0; i <= nGlyphs; ++i) { - locaTable[i].idx = i; - if (locaFmt) { - locaTable[i].origOffset = (int)getU32BE(pos + i*4, &ok); - } else { - locaTable[i].origOffset = 2 * getU16BE(pos + i*2, &ok); - } - } - qsort(locaTable, nGlyphs + 1, sizeof(TrueTypeLoca), - &cmpTrueTypeLocaOffset); - for (i = 0; i < nGlyphs; ++i) { - locaTable[i].len = locaTable[i+1].origOffset - locaTable[i].origOffset; - } - locaTable[nGlyphs].len = 0; - qsort(locaTable, nGlyphs + 1, sizeof(TrueTypeLoca), - &cmpTrueTypeLocaIdx); - pos = 0; - for (i = 0; i <= nGlyphs; ++i) { - locaTable[i].newOffset = pos; - pos += locaTable[i].len; - if (pos & 3) { - pos += 4 - (pos & 3); - } - } - - // construct the new 'loca' table - locaData = (Guchar *)gmalloc((nGlyphs + 1) * (locaFmt ? 4 : 2)); - for (i = 0; i <= nGlyphs; ++i) { - pos = locaTable[i].newOffset; - if (locaFmt) { - locaData[4*i ] = (Guchar)(pos >> 24); - locaData[4*i+1] = (Guchar)(pos >> 16); - locaData[4*i+2] = (Guchar)(pos >> 8); - locaData[4*i+3] = (Guchar) pos; - } else { - locaData[2*i ] = (Guchar)(pos >> 9); - locaData[2*i+1] = (Guchar)(pos >> 1); - } - } - - // count the number of tables - nNewTables = 0; - for (i = 0; i < nT42Tables; ++i) { - if (t42Tables[i].required || - seekTable(t42Tables[i].tag) >= 0) { - ++nNewTables; - } - } - - // construct the new table headers, including table checksums - // (pad each table out to a multiple of 4 bytes) - pos = 12 + nNewTables*16; - k = 0; - for (i = 0; i < nT42Tables; ++i) { - length = -1; - checksum = 0; // make gcc happy - if (i == t42HeadTable) { - length = 54; - checksum = computeTableChecksum(headData, 54); - } else if (i == t42LocaTable) { - length = (nGlyphs + 1) * (locaFmt ? 4 : 2); - checksum = computeTableChecksum(locaData, length); - } else if (i == t42GlyfTable) { - length = 0; - checksum = 0; - glyfPos = tables[seekTable("glyf")].offset; - for (j = 0; j < nGlyphs; ++j) { - length += locaTable[j].len; - if (length & 3) { - length += 4 - (length & 3); - } - if (checkRegion(glyfPos + locaTable[j].origOffset, locaTable[j].len)) { - checksum += - computeTableChecksum(file + glyfPos + locaTable[j].origOffset, - locaTable[j].len); - } - } - } else { - if ((j = seekTable(t42Tables[i].tag)) >= 0) { - length = tables[j].len; - if (checkRegion(tables[j].offset, length)) { - checksum = computeTableChecksum(file + tables[j].offset, length); - } - } else if (t42Tables[i].required) { - //~ error(-1, "Embedded TrueType font is missing a required table ('%s')", - //~ t42Tables[i].tag); - length = 0; - checksum = 0; - } - } - if (length >= 0) { - newTables[k].tag = ((t42Tables[i].tag[0] & 0xff) << 24) | - ((t42Tables[i].tag[1] & 0xff) << 16) | - ((t42Tables[i].tag[2] & 0xff) << 8) | - (t42Tables[i].tag[3] & 0xff); - newTables[k].checksum = checksum; - newTables[k].offset = pos; - newTables[k].len = length; - pos += length; - if (pos & 3) { - pos += 4 - (length & 3); - } - ++k; - } - } - - // construct the table directory - tableDir[0] = 0x00; // sfnt version - tableDir[1] = 0x01; - tableDir[2] = 0x00; - tableDir[3] = 0x00; - tableDir[4] = 0; // numTables - tableDir[5] = nNewTables; - tableDir[6] = 0; // searchRange - tableDir[7] = (Guchar)128; - tableDir[8] = 0; // entrySelector - tableDir[9] = 3; - tableDir[10] = 0; // rangeShift - tableDir[11] = (Guchar)(16 * nNewTables - 128); - pos = 12; - for (i = 0; i < nNewTables; ++i) { - tableDir[pos ] = (Guchar)(newTables[i].tag >> 24); - tableDir[pos+ 1] = (Guchar)(newTables[i].tag >> 16); - tableDir[pos+ 2] = (Guchar)(newTables[i].tag >> 8); - tableDir[pos+ 3] = (Guchar) newTables[i].tag; - tableDir[pos+ 4] = (Guchar)(newTables[i].checksum >> 24); - tableDir[pos+ 5] = (Guchar)(newTables[i].checksum >> 16); - tableDir[pos+ 6] = (Guchar)(newTables[i].checksum >> 8); - tableDir[pos+ 7] = (Guchar) newTables[i].checksum; - tableDir[pos+ 8] = (Guchar)(newTables[i].offset >> 24); - tableDir[pos+ 9] = (Guchar)(newTables[i].offset >> 16); - tableDir[pos+10] = (Guchar)(newTables[i].offset >> 8); - tableDir[pos+11] = (Guchar) newTables[i].offset; - tableDir[pos+12] = (Guchar)(newTables[i].len >> 24); - tableDir[pos+13] = (Guchar)(newTables[i].len >> 16); - tableDir[pos+14] = (Guchar)(newTables[i].len >> 8); - tableDir[pos+15] = (Guchar) newTables[i].len; - pos += 16; - } - - // compute the font checksum and store it in the head table - checksum = computeTableChecksum(tableDir, 12 + nNewTables*16); - for (i = 0; i < nNewTables; ++i) { - checksum += newTables[i].checksum; - } - checksum = 0xb1b0afba - checksum; // because the TrueType spec says so - headData[ 8] = (Guchar)(checksum >> 24); - headData[ 9] = (Guchar)(checksum >> 16); - headData[10] = (Guchar)(checksum >> 8); - headData[11] = (Guchar) checksum; - - // start the sfnts array - if (name) { - (*outputFunc)(outputStream, "/", 1); - (*outputFunc)(outputStream, name->getCString(), name->getLength()); - (*outputFunc)(outputStream, " [\n", 3); - } else { - (*outputFunc)(outputStream, "/sfnts [\n", 9); - } - - // write the table directory - dumpString(tableDir, 12 + nNewTables*16, outputFunc, outputStream); - - // write the tables - for (i = 0; i < nNewTables; ++i) { - if (i == t42HeadTable) { - dumpString(headData, 54, outputFunc, outputStream); - } else if (i == t42LocaTable) { - length = (nGlyphs + 1) * (locaFmt ? 4 : 2); - dumpString(locaData, length, outputFunc, outputStream); - } else if (i == t42GlyfTable) { - glyfPos = tables[seekTable("glyf")].offset; - for (j = 0; j < nGlyphs; ++j) { - if (locaTable[j].len > 0 && - checkRegion(glyfPos + locaTable[j].origOffset, locaTable[j].len)) { - dumpString(file + glyfPos + locaTable[j].origOffset, - locaTable[j].len, outputFunc, outputStream); - } - } - } else { - // length == 0 means the table is missing and the error was - // already reported during the construction of the table - // headers - if ((length = newTables[i].len) > 0) { - if ((j = seekTable(t42Tables[i].tag)) >= 0 && - checkRegion(tables[j].offset, tables[j].len)) { - dumpString(file + tables[j].offset, tables[j].len, - outputFunc, outputStream); - } - } - } - } - - // end the sfnts array - (*outputFunc)(outputStream, "] def\n", 6); - - gfree(locaData); - gfree(locaTable); -} - -void FoFiTrueType::dumpString(Guchar *s, int length, - FoFiOutputFunc outputFunc, - void *outputStream) { - char buf[64]; - int pad, i, j; - - (*outputFunc)(outputStream, "<", 1); - for (i = 0; i < length; i += 32) { - for (j = 0; j < 32 && i+j < length; ++j) { - sprintf(buf, "%02X", s[i+j] & 0xff); - (*outputFunc)(outputStream, buf, strlen(buf)); - } - if (i % (65536 - 32) == 65536 - 64) { - (*outputFunc)(outputStream, ">\n<", 3); - } else if (i+32 < length) { - (*outputFunc)(outputStream, "\n", 1); - } - } - if (length & 3) { - pad = 4 - (length & 3); - for (i = 0; i < pad; ++i) { - (*outputFunc)(outputStream, "00", 2); - } - } - // add an extra zero byte because the Adobe Type 42 spec says so - (*outputFunc)(outputStream, "00>\n", 4); -} - -Guint FoFiTrueType::computeTableChecksum(Guchar *data, int length) { - Guint checksum, word; - int i; - - checksum = 0; - for (i = 0; i+3 < length; i += 4) { - word = ((data[i ] & 0xff) << 24) + - ((data[i+1] & 0xff) << 16) + - ((data[i+2] & 0xff) << 8) + - (data[i+3] & 0xff); - checksum += word; - } - if (length & 3) { - word = 0; - i = length & ~3; - switch (length & 3) { - case 3: - word |= (data[i+2] & 0xff) << 8; - case 2: - word |= (data[i+1] & 0xff) << 16; - case 1: - word |= (data[i ] & 0xff) << 24; - break; - } - checksum += word; - } - return checksum; -} - -void FoFiTrueType::parse() { - int pos, i, j; - - parsedOk = gTrue; - - // read the table directory - nTables = getU16BE(4, &parsedOk); - if (!parsedOk) { - return; - } - tables = (TrueTypeTable *)gmalloc(nTables * sizeof(TrueTypeTable)); - pos = 12; - for (i = 0; i < nTables; ++i) { - tables[i].tag = getU32BE(pos, &parsedOk); - tables[i].checksum = getU32BE(pos + 4, &parsedOk); - tables[i].offset = (int)getU32BE(pos + 8, &parsedOk); - tables[i].len = (int)getU32BE(pos + 12, &parsedOk); - if (tables[i].offset + tables[i].len < tables[i].offset || - tables[i].offset + tables[i].len > len) { - parsedOk = gFalse; - } - pos += 16; - } - if (!parsedOk) { - return; - } - - // check for tables that are required by both the TrueType spec and - // the Type 42 spec - if (seekTable("head") < 0 || - seekTable("hhea") < 0 || - seekTable("loca") < 0 || - seekTable("maxp") < 0 || - seekTable("glyf") < 0 || - seekTable("hmtx") < 0) { - parsedOk = gFalse; - return; - } - - // read the cmaps - if ((i = seekTable("cmap")) >= 0) { - pos = tables[i].offset + 2; - nCmaps = getU16BE(pos, &parsedOk); - pos += 2; - if (!parsedOk) { - return; - } - cmaps = (TrueTypeCmap *)gmalloc(nCmaps * sizeof(TrueTypeCmap)); - for (j = 0; j < nCmaps; ++j) { - cmaps[j].platform = getU16BE(pos, &parsedOk); - cmaps[j].encoding = getU16BE(pos + 2, &parsedOk); - cmaps[j].offset = tables[i].offset + getU32BE(pos + 4, &parsedOk); - pos += 8; - cmaps[j].fmt = getU16BE(cmaps[j].offset, &parsedOk); - cmaps[j].len = getU16BE(cmaps[j].offset + 2, &parsedOk); - } - if (!parsedOk) { - return; - } - } else { - nCmaps = 0; - } - - // get the number of glyphs from the maxp table - i = seekTable("maxp"); - nGlyphs = getU16BE(tables[i].offset + 4, &parsedOk); - if (!parsedOk) { - return; - } - - // get the bbox and loca table format from the head table - i = seekTable("head"); - bbox[0] = getS16BE(tables[i].offset + 36, &parsedOk); - bbox[1] = getS16BE(tables[i].offset + 38, &parsedOk); - bbox[2] = getS16BE(tables[i].offset + 40, &parsedOk); - bbox[3] = getS16BE(tables[i].offset + 42, &parsedOk); - locaFmt = getS16BE(tables[i].offset + 50, &parsedOk); - if (!parsedOk) { - return; - } - - // read the post table - readPostTable(); - if (!parsedOk) { - return; - } -} - -void FoFiTrueType::readPostTable() { - GString *name; - int tablePos, postFmt, stringIdx, stringPos; - int i, j, n, m; - - if ((i = seekTable("post")) < 0) { - return; - } - tablePos = tables[i].offset; - postFmt = getU32BE(tablePos, &parsedOk); - if (!parsedOk) { - return; - } - if (postFmt == 0x00010000) { - nameToGID = new GHash(gTrue); - for (i = 0; i < 258; ++i) { - nameToGID->add(new GString(macGlyphNames[i]), i); - } - } else if (postFmt == 0x00020000) { - nameToGID = new GHash(gTrue); - n = getU16BE(tablePos + 32, &parsedOk); - if (!parsedOk) { - return; - } - if (n > nGlyphs) { - n = nGlyphs; - } - stringIdx = 0; - stringPos = tablePos + 34 + 2*n; - for (i = 0; i < n; ++i) { - j = getU16BE(tablePos + 34 + 2*i, &parsedOk); - if (j < 258) { - nameToGID->removeInt(macGlyphNames[j]); - nameToGID->add(new GString(macGlyphNames[j]), i); - } else { - j -= 258; - if (j != stringIdx) { - for (stringIdx = 0, stringPos = tablePos + 34 + 2*n; - stringIdx < j; - ++stringIdx, stringPos += 1 + getU8(stringPos, &parsedOk)) ; - if (!parsedOk) { - return; - } - } - m = getU8(stringPos, &parsedOk); - if (!parsedOk || !checkRegion(stringPos + 1, m)) { - parsedOk = gFalse; - return; - } - name = new GString((char *)&file[stringPos + 1], m); - nameToGID->removeInt(name); - nameToGID->add(name, i); - ++stringIdx; - stringPos += 1 + m; - } - } - } else if (postFmt == 0x00028000) { - nameToGID = new GHash(gTrue); - for (i = 0; i < nGlyphs; ++i) { - j = getU8(tablePos + 32 + i, &parsedOk); - if (!parsedOk) { - return; - } - if (j < 258) { - nameToGID->removeInt(macGlyphNames[j]); - nameToGID->add(new GString(macGlyphNames[j]), i); - } - } - } -} - -int FoFiTrueType::seekTable(char *tag) { - Guint tagI; - int i; - - tagI = ((tag[0] & 0xff) << 24) | - ((tag[1] & 0xff) << 16) | - ((tag[2] & 0xff) << 8) | - (tag[3] & 0xff); - for (i = 0; i < nTables; ++i) { - if (tables[i].tag == tagI) { - return i; - } - } - return -1; -} |