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-rw-r--r--kpdf/xpdf/xpdf/GfxFont.cc1616
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diff --git a/kpdf/xpdf/xpdf/GfxFont.cc b/kpdf/xpdf/xpdf/GfxFont.cc
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index 8694be47..00000000
--- a/kpdf/xpdf/xpdf/GfxFont.cc
+++ /dev/null
@@ -1,1616 +0,0 @@
-//========================================================================
-//
-// GfxFont.cc
-//
-// Copyright 1996-2003 Glyph & Cog, LLC
-//
-//========================================================================
-
-#include <aconf.h>
-
-#ifdef USE_GCC_PRAGMAS
-#pragma implementation
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include "gmem.h"
-#include "Error.h"
-#include "Object.h"
-#include "Dict.h"
-#include "GlobalParams.h"
-#include "CMap.h"
-#include "CharCodeToUnicode.h"
-#include "FontEncodingTables.h"
-#include "BuiltinFontTables.h"
-#include "FoFiType1.h"
-#include "FoFiType1C.h"
-#include "FoFiTrueType.h"
-#include "GfxFont.h"
-
-//------------------------------------------------------------------------
-
-struct StdFontMapEntry {
- char *altName;
- char *properName;
-};
-
-// Acrobat 4.0 and earlier substituted Base14-compatible fonts without
-// providing Widths and a FontDescriptor, so we munge the names into
-// the proper Base14 names. This table is from implementation note 44
-// in the PDF 1.4 spec, with some additions based on empirical
-// evidence.
-static StdFontMapEntry stdFontMap[] = {
- { "Arial", "Helvetica" },
- { "Arial,Bold", "Helvetica-Bold" },
- { "Arial,BoldItalic", "Helvetica-BoldOblique" },
- { "Arial,Italic", "Helvetica-Oblique" },
- { "Arial-Bold", "Helvetica-Bold" },
- { "Arial-BoldItalic", "Helvetica-BoldOblique" },
- { "Arial-BoldItalicMT", "Helvetica-BoldOblique" },
- { "Arial-BoldMT", "Helvetica-Bold" },
- { "Arial-Italic", "Helvetica-Oblique" },
- { "Arial-ItalicMT", "Helvetica-Oblique" },
- { "ArialMT", "Helvetica" },
- { "Courier,Bold", "Courier-Bold" },
- { "Courier,BoldItalic", "Courier-BoldOblique" },
- { "Courier,Italic", "Courier-Oblique" },
- { "CourierNew", "Courier" },
- { "CourierNew,Bold", "Courier-Bold" },
- { "CourierNew,BoldItalic", "Courier-BoldOblique" },
- { "CourierNew,Italic", "Courier-Oblique" },
- { "CourierNew-Bold", "Courier-Bold" },
- { "CourierNew-BoldItalic", "Courier-BoldOblique" },
- { "CourierNew-Italic", "Courier-Oblique" },
- { "CourierNewPS-BoldItalicMT", "Courier-BoldOblique" },
- { "CourierNewPS-BoldMT", "Courier-Bold" },
- { "CourierNewPS-ItalicMT", "Courier-Oblique" },
- { "CourierNewPSMT", "Courier" },
- { "Helvetica,Bold", "Helvetica-Bold" },
- { "Helvetica,BoldItalic", "Helvetica-BoldOblique" },
- { "Helvetica,Italic", "Helvetica-Oblique" },
- { "Helvetica-BoldItalic", "Helvetica-BoldOblique" },
- { "Helvetica-Italic", "Helvetica-Oblique" },
- { "Symbol,Bold", "Symbol" },
- { "Symbol,BoldItalic", "Symbol" },
- { "Symbol,Italic", "Symbol" },
- { "TimesNewRoman", "Times-Roman" },
- { "TimesNewRoman,Bold", "Times-Bold" },
- { "TimesNewRoman,BoldItalic", "Times-BoldItalic" },
- { "TimesNewRoman,Italic", "Times-Italic" },
- { "TimesNewRoman-Bold", "Times-Bold" },
- { "TimesNewRoman-BoldItalic", "Times-BoldItalic" },
- { "TimesNewRoman-Italic", "Times-Italic" },
- { "TimesNewRomanPS", "Times-Roman" },
- { "TimesNewRomanPS-Bold", "Times-Bold" },
- { "TimesNewRomanPS-BoldItalic", "Times-BoldItalic" },
- { "TimesNewRomanPS-BoldItalicMT", "Times-BoldItalic" },
- { "TimesNewRomanPS-BoldMT", "Times-Bold" },
- { "TimesNewRomanPS-Italic", "Times-Italic" },
- { "TimesNewRomanPS-ItalicMT", "Times-Italic" },
- { "TimesNewRomanPSMT", "Times-Roman" },
- { "TimesNewRomanPSMT,Bold", "Times-Bold" },
- { "TimesNewRomanPSMT,BoldItalic", "Times-BoldItalic" },
- { "TimesNewRomanPSMT,Italic", "Times-Italic" }
-};
-
-//------------------------------------------------------------------------
-// GfxFont
-//------------------------------------------------------------------------
-
-GfxFont *GfxFont::makeFont(XRef *xref, char *tagA, Ref idA, Dict *fontDict) {
- GString *nameA;
- GfxFont *font;
- Object obj1;
-
- // get base font name
- nameA = NULL;
- fontDict->lookup("BaseFont", &obj1);
- if (obj1.isName()) {
- nameA = new GString(obj1.getName());
- }
- obj1.free();
-
- // get font type
- font = NULL;
- fontDict->lookup("Subtype", &obj1);
- if (obj1.isName("Type1") || obj1.isName("MMType1")) {
- font = new Gfx8BitFont(xref, tagA, idA, nameA, fontType1, fontDict);
- } else if (obj1.isName("Type1C")) {
- font = new Gfx8BitFont(xref, tagA, idA, nameA, fontType1C, fontDict);
- } else if (obj1.isName("Type3")) {
- font = new Gfx8BitFont(xref, tagA, idA, nameA, fontType3, fontDict);
- } else if (obj1.isName("TrueType")) {
- font = new Gfx8BitFont(xref, tagA, idA, nameA, fontTrueType, fontDict);
- } else if (obj1.isName("Type0")) {
- font = new GfxCIDFont(xref, tagA, idA, nameA, fontDict);
- } else {
- error(-1, "Unknown font type: '%s'",
- obj1.isName() ? obj1.getName() : "???");
- font = new Gfx8BitFont(xref, tagA, idA, nameA, fontUnknownType, fontDict);
- }
- obj1.free();
-
- return font;
-}
-
-GfxFont::GfxFont(char *tagA, Ref idA, GString *nameA) {
- ok = gFalse;
- tag = new GString(tagA);
- id = idA;
- name = nameA;
- origName = nameA;
- embFontName = NULL;
- extFontFile = NULL;
-}
-
-GfxFont::~GfxFont() {
- delete tag;
- if (origName && origName != name) {
- delete origName;
- }
- if (name) {
- delete name;
- }
- if (embFontName) {
- delete embFontName;
- }
- if (extFontFile) {
- delete extFontFile;
- }
-}
-
-void GfxFont::readFontDescriptor(XRef *xref, Dict *fontDict) {
- Object obj1, obj2, obj3, obj4;
- double t;
- int i;
-
- // assume Times-Roman by default (for substitution purposes)
- flags = fontSerif;
-
- embFontID.num = -1;
- embFontID.gen = -1;
- missingWidth = 0;
-
- if (fontDict->lookup("FontDescriptor", &obj1)->isDict()) {
-
- // get flags
- if (obj1.dictLookup("Flags", &obj2)->isInt()) {
- flags = obj2.getInt();
- }
- obj2.free();
-
- // get name
- obj1.dictLookup("FontName", &obj2);
- if (obj2.isName()) {
- embFontName = new GString(obj2.getName());
- }
- obj2.free();
-
- // look for embedded font file
- if (obj1.dictLookupNF("FontFile", &obj2)->isRef()) {
- embFontID = obj2.getRef();
- if (type != fontType1) {
- error(-1, "Mismatch between font type and embedded font file");
- type = fontType1;
- }
- }
- obj2.free();
- if (embFontID.num == -1 &&
- obj1.dictLookupNF("FontFile2", &obj2)->isRef()) {
- embFontID = obj2.getRef();
- if (type != fontTrueType && type != fontCIDType2) {
- error(-1, "Mismatch between font type and embedded font file");
- type = type == fontCIDType0 ? fontCIDType2 : fontTrueType;
- }
- }
- obj2.free();
- if (embFontID.num == -1 &&
- obj1.dictLookupNF("FontFile3", &obj2)->isRef()) {
- if (obj2.fetch(xref, &obj3)->isStream()) {
- obj3.streamGetDict()->lookup("Subtype", &obj4);
- if (obj4.isName("Type1")) {
- embFontID = obj2.getRef();
- if (type != fontType1) {
- error(-1, "Mismatch between font type and embedded font file");
- type = fontType1;
- }
- } else if (obj4.isName("Type1C")) {
- embFontID = obj2.getRef();
- if (type != fontType1 && type != fontType1C) {
- error(-1, "Mismatch between font type and embedded font file");
- }
- type = fontType1C;
- } else if (obj4.isName("TrueType")) {
- embFontID = obj2.getRef();
- if (type != fontTrueType) {
- error(-1, "Mismatch between font type and embedded font file");
- type = fontTrueType;
- }
- } else if (obj4.isName("CIDFontType0C")) {
- embFontID = obj2.getRef();
- if (type != fontCIDType0) {
- error(-1, "Mismatch between font type and embedded font file");
- }
- type = fontCIDType0C;
- } else if (obj4.isName("OpenType")) {
- embFontID = obj2.getRef();
- if (type == fontTrueType) {
- type = fontTrueTypeOT;
- } else if (type == fontType1) {
- type = fontType1COT;
- } else if (type == fontCIDType0) {
- type = fontCIDType0COT;
- } else if (type == fontCIDType2) {
- type = fontCIDType2OT;
- } else {
- error(-1, "Mismatch between font type and embedded font file");
- }
- } else {
- error(-1, "Unknown embedded font type '%s'",
- obj4.isName() ? obj4.getName() : "???");
- }
- obj4.free();
- }
- obj3.free();
- }
- obj2.free();
-
- // look for MissingWidth
- obj1.dictLookup("MissingWidth", &obj2);
- if (obj2.isNum()) {
- missingWidth = obj2.getNum();
- }
- obj2.free();
-
- // get Ascent and Descent
- obj1.dictLookup("Ascent", &obj2);
- if (obj2.isNum()) {
- t = 0.001 * obj2.getNum();
- // some broken font descriptors set ascent and descent to 0
- if (t != 0) {
- ascent = t;
- }
- }
- obj2.free();
- obj1.dictLookup("Descent", &obj2);
- if (obj2.isNum()) {
- t = 0.001 * obj2.getNum();
- // some broken font descriptors set ascent and descent to 0
- if (t != 0) {
- descent = t;
- }
- // some broken font descriptors specify a positive descent
- if (descent > 0) {
- descent = -descent;
- }
- }
- obj2.free();
-
- // font FontBBox
- if (obj1.dictLookup("FontBBox", &obj2)->isArray()) {
- for (i = 0; i < 4 && i < obj2.arrayGetLength(); ++i) {
- if (obj2.arrayGet(i, &obj3)->isNum()) {
- fontBBox[i] = 0.001 * obj3.getNum();
- }
- obj3.free();
- }
- }
- obj2.free();
-
- }
- obj1.free();
-}
-
-CharCodeToUnicode *GfxFont::readToUnicodeCMap(Dict *fontDict, int nBits,
- CharCodeToUnicode *ctu) {
- GString *buf;
- Object obj1;
- int c;
-
- if (!fontDict->lookup("ToUnicode", &obj1)->isStream()) {
- obj1.free();
- return NULL;
- }
- buf = new GString();
- obj1.streamReset();
- while ((c = obj1.streamGetChar()) != EOF) {
- buf->append(c);
- }
- obj1.streamClose();
- obj1.free();
- if (ctu) {
- ctu->mergeCMap(buf, nBits);
- } else {
- ctu = CharCodeToUnicode::parseCMap(buf, nBits);
- }
- delete buf;
- return ctu;
-}
-
-void GfxFont::findExtFontFile() {
- static char *type1Exts[] = { ".pfa", ".pfb", ".ps", "", NULL };
- static char *ttExts[] = { ".ttf", ".ttc", NULL };
-
- if (name) {
- if (type == fontType1) {
- extFontFile = globalParams->findFontFile(name, type1Exts);
- } else if (type == fontTrueType) {
- extFontFile = globalParams->findFontFile(name, ttExts);
- }
- }
-}
-
-char *GfxFont::readExtFontFile(int *len) {
- FILE *f;
- char *buf;
-
- if (!(f = fopen(extFontFile->getCString(), "rb"))) {
- error(-1, "External font file '%s' vanished", extFontFile->getCString());
- return NULL;
- }
- fseek(f, 0, SEEK_END);
- *len = (int)ftell(f);
- fseek(f, 0, SEEK_SET);
- buf = (char *)gmalloc(*len);
- if ((int)fread(buf, 1, *len, f) != *len) {
- error(-1, "Error reading external font file '%s'",
- extFontFile->getCString());
- }
- fclose(f);
- return buf;
-}
-
-char *GfxFont::readEmbFontFile(XRef *xref, int *len) {
- char *buf;
- Object obj1, obj2;
- Stream *str;
- int c;
- int size, i;
-
- obj1.initRef(embFontID.num, embFontID.gen);
- obj1.fetch(xref, &obj2);
- if (!obj2.isStream()) {
- error(-1, "Embedded font file is not a stream");
- obj2.free();
- obj1.free();
- embFontID.num = -1;
- return NULL;
- }
- str = obj2.getStream();
-
- buf = NULL;
- i = size = 0;
- str->reset();
- while ((c = str->getChar()) != EOF) {
- if (i == size) {
- size += 4096;
- buf = (char *)grealloc(buf, size);
- }
- buf[i++] = c;
- }
- *len = i;
- str->close();
-
- obj2.free();
- obj1.free();
-
- return buf;
-}
-
-//------------------------------------------------------------------------
-// Gfx8BitFont
-//------------------------------------------------------------------------
-
-Gfx8BitFont::Gfx8BitFont(XRef *xref, char *tagA, Ref idA, GString *nameA,
- GfxFontType typeA, Dict *fontDict):
- GfxFont(tagA, idA, nameA)
-{
- GString *name2;
- BuiltinFont *builtinFont;
- char **baseEnc;
- GBool baseEncFromFontFile;
- char *buf;
- int len;
- FoFiType1 *ffT1;
- FoFiType1C *ffT1C;
- int code, code2;
- char *charName;
- GBool missing, hex;
- Unicode toUnicode[256];
- CharCodeToUnicode *utu, *ctu2;
- Unicode uBuf[8];
- double mul;
- int firstChar, lastChar;
- Gushort w;
- Object obj1, obj2, obj3;
- int n, i, a, b, m;
-
- type = typeA;
- ctu = NULL;
-
- // do font name substitution for various aliases of the Base 14 font
- // names
- if (name) {
- name2 = name->copy();
- i = 0;
- while (i < name2->getLength()) {
- if (name2->getChar(i) == ' ') {
- name2->del(i);
- } else {
- ++i;
- }
- }
- a = 0;
- b = sizeof(stdFontMap) / sizeof(StdFontMapEntry);
- // invariant: stdFontMap[a].altName <= name2 < stdFontMap[b].altName
- while (b - a > 1) {
- m = (a + b) / 2;
- if (name2->cmp(stdFontMap[m].altName) >= 0) {
- a = m;
- } else {
- b = m;
- }
- }
- if (!name2->cmp(stdFontMap[a].altName)) {
- name = new GString(stdFontMap[a].properName);
- }
- delete name2;
- }
-
- // is it a built-in font?
- builtinFont = NULL;
- if (name) {
- for (i = 0; i < nBuiltinFonts; ++i) {
- if (!name->cmp(builtinFonts[i].name)) {
- builtinFont = &builtinFonts[i];
- break;
- }
- }
- }
-
- // default ascent/descent values
- if (builtinFont) {
- ascent = 0.001 * builtinFont->ascent;
- descent = 0.001 * builtinFont->descent;
- fontBBox[0] = 0.001 * builtinFont->bbox[0];
- fontBBox[1] = 0.001 * builtinFont->bbox[1];
- fontBBox[2] = 0.001 * builtinFont->bbox[2];
- fontBBox[3] = 0.001 * builtinFont->bbox[3];
- } else {
- ascent = 0.95;
- descent = -0.35;
- fontBBox[0] = fontBBox[1] = fontBBox[2] = fontBBox[3] = 0;
- }
-
- // get info from font descriptor
- readFontDescriptor(xref, fontDict);
-
- // for non-embedded fonts, don't trust the ascent/descent/bbox
- // values from the font descriptor
- if (builtinFont && embFontID.num < 0) {
- ascent = 0.001 * builtinFont->ascent;
- descent = 0.001 * builtinFont->descent;
- fontBBox[0] = 0.001 * builtinFont->bbox[0];
- fontBBox[1] = 0.001 * builtinFont->bbox[1];
- fontBBox[2] = 0.001 * builtinFont->bbox[2];
- fontBBox[3] = 0.001 * builtinFont->bbox[3];
- }
-
- // look for an external font file
- findExtFontFile();
-
- // get font matrix
- fontMat[0] = fontMat[3] = 1;
- fontMat[1] = fontMat[2] = fontMat[4] = fontMat[5] = 0;
- if (fontDict->lookup("FontMatrix", &obj1)->isArray()) {
- for (i = 0; i < 6 && i < obj1.arrayGetLength(); ++i) {
- if (obj1.arrayGet(i, &obj2)->isNum()) {
- fontMat[i] = obj2.getNum();
- }
- obj2.free();
- }
- }
- obj1.free();
-
- // get Type 3 bounding box, font definition, and resources
- if (type == fontType3) {
- if (fontDict->lookup("FontBBox", &obj1)->isArray()) {
- for (i = 0; i < 4 && i < obj1.arrayGetLength(); ++i) {
- if (obj1.arrayGet(i, &obj2)->isNum()) {
- fontBBox[i] = obj2.getNum();
- }
- obj2.free();
- }
- }
- obj1.free();
- if (!fontDict->lookup("CharProcs", &charProcs)->isDict()) {
- error(-1, "Missing or invalid CharProcs dictionary in Type 3 font");
- charProcs.free();
- }
- if (!fontDict->lookup("Resources", &resources)->isDict()) {
- resources.free();
- }
- }
-
- //----- build the font encoding -----
-
- // Encodings start with a base encoding, which can come from
- // (in order of priority):
- // 1. FontDict.Encoding or FontDict.Encoding.BaseEncoding
- // - MacRoman / MacExpert / WinAnsi / Standard
- // 2. embedded or external font file
- // 3. default:
- // - builtin --> builtin encoding
- // - TrueType --> WinAnsiEncoding
- // - others --> StandardEncoding
- // and then add a list of differences (if any) from
- // FontDict.Encoding.Differences.
-
- // check FontDict for base encoding
- hasEncoding = gFalse;
- usesMacRomanEnc = gFalse;
- baseEnc = NULL;
- baseEncFromFontFile = gFalse;
- fontDict->lookup("Encoding", &obj1);
- if (obj1.isDict()) {
- obj1.dictLookup("BaseEncoding", &obj2);
- if (obj2.isName("MacRomanEncoding")) {
- hasEncoding = gTrue;
- usesMacRomanEnc = gTrue;
- baseEnc = macRomanEncoding;
- } else if (obj2.isName("MacExpertEncoding")) {
- hasEncoding = gTrue;
- baseEnc = macExpertEncoding;
- } else if (obj2.isName("WinAnsiEncoding")) {
- hasEncoding = gTrue;
- baseEnc = winAnsiEncoding;
- }
- obj2.free();
- } else if (obj1.isName("MacRomanEncoding")) {
- hasEncoding = gTrue;
- usesMacRomanEnc = gTrue;
- baseEnc = macRomanEncoding;
- } else if (obj1.isName("MacExpertEncoding")) {
- hasEncoding = gTrue;
- baseEnc = macExpertEncoding;
- } else if (obj1.isName("WinAnsiEncoding")) {
- hasEncoding = gTrue;
- baseEnc = winAnsiEncoding;
- }
-
- // check embedded or external font file for base encoding
- // (only for Type 1 fonts - trying to get an encoding out of a
- // TrueType font is a losing proposition)
- ffT1 = NULL;
- ffT1C = NULL;
- buf = NULL;
- if (type == fontType1 && (extFontFile || embFontID.num >= 0)) {
- if (extFontFile) {
- ffT1 = FoFiType1::load(extFontFile->getCString());
- } else {
- buf = readEmbFontFile(xref, &len);
- ffT1 = FoFiType1::make(buf, len);
- }
- if (ffT1) {
- if (ffT1->getName()) {
- if (embFontName) {
- delete embFontName;
- }
- embFontName = new GString(ffT1->getName());
- }
- if (!baseEnc) {
- baseEnc = ffT1->getEncoding();
- baseEncFromFontFile = gTrue;
- }
- }
- } else if (type == fontType1C && (extFontFile || embFontID.num >= 0)) {
- if (extFontFile) {
- ffT1C = FoFiType1C::load(extFontFile->getCString());
- } else {
- buf = readEmbFontFile(xref, &len);
- ffT1C = FoFiType1C::make(buf, len);
- }
- if (ffT1C) {
- if (ffT1C->getName()) {
- if (embFontName) {
- delete embFontName;
- }
- embFontName = new GString(ffT1C->getName());
- }
- if (!baseEnc) {
- baseEnc = ffT1C->getEncoding();
- baseEncFromFontFile = gTrue;
- }
- }
- }
- if (buf) {
- gfree(buf);
- }
-
- // get default base encoding
- if (!baseEnc) {
- if (builtinFont && embFontID.num < 0) {
- baseEnc = builtinFont->defaultBaseEnc;
- hasEncoding = gTrue;
- } else if (type == fontTrueType) {
- baseEnc = winAnsiEncoding;
- } else {
- baseEnc = standardEncoding;
- }
- }
-
- // copy the base encoding
- for (i = 0; i < 256; ++i) {
- enc[i] = baseEnc[i];
- if ((encFree[i] = baseEncFromFontFile) && enc[i]) {
- enc[i] = copyString(baseEnc[i]);
- }
- }
-
- // some Type 1C font files have empty encodings, which can break the
- // T1C->T1 conversion (since the 'seac' operator depends on having
- // the accents in the encoding), so we fill in any gaps from
- // StandardEncoding
- if (type == fontType1C && (extFontFile || embFontID.num >= 0) &&
- baseEncFromFontFile) {
- for (i = 0; i < 256; ++i) {
- if (!enc[i] && standardEncoding[i]) {
- enc[i] = standardEncoding[i];
- encFree[i] = gFalse;
- }
- }
- }
-
- // merge differences into encoding
- if (obj1.isDict()) {
- obj1.dictLookup("Differences", &obj2);
- if (obj2.isArray()) {
- hasEncoding = gTrue;
- code = 0;
- for (i = 0; i < obj2.arrayGetLength(); ++i) {
- obj2.arrayGet(i, &obj3);
- if (obj3.isInt()) {
- code = obj3.getInt();
- } else if (obj3.isName()) {
- if (code >= 0 && code < 256) {
- if (encFree[code]) {
- gfree(enc[code]);
- }
- enc[code] = copyString(obj3.getName());
- encFree[code] = gTrue;
- }
- ++code;
- } else {
- error(-1, "Wrong type in font encoding resource differences (%s)",
- obj3.getTypeName());
- }
- obj3.free();
- }
- }
- obj2.free();
- }
- obj1.free();
- if (ffT1) {
- delete ffT1;
- }
- if (ffT1C) {
- delete ffT1C;
- }
-
- //----- build the mapping to Unicode -----
-
- // pass 1: use the name-to-Unicode mapping table
- missing = hex = gFalse;
- for (code = 0; code < 256; ++code) {
- if ((charName = enc[code])) {
- if (!(toUnicode[code] = globalParams->mapNameToUnicode(charName)) &&
- strcmp(charName, ".notdef")) {
- // if it wasn't in the name-to-Unicode table, check for a
- // name that looks like 'Axx' or 'xx', where 'A' is any letter
- // and 'xx' is two hex digits
- if ((strlen(charName) == 3 &&
- isalpha(charName[0]) &&
- isxdigit(charName[1]) && isxdigit(charName[2]) &&
- ((charName[1] >= 'a' && charName[1] <= 'f') ||
- (charName[1] >= 'A' && charName[1] <= 'F') ||
- (charName[2] >= 'a' && charName[2] <= 'f') ||
- (charName[2] >= 'A' && charName[2] <= 'F'))) ||
- (strlen(charName) == 2 &&
- isxdigit(charName[0]) && isxdigit(charName[1]) &&
- ((charName[0] >= 'a' && charName[0] <= 'f') ||
- (charName[0] >= 'A' && charName[0] <= 'F') ||
- (charName[1] >= 'a' && charName[1] <= 'f') ||
- (charName[1] >= 'A' && charName[1] <= 'F')))) {
- hex = gTrue;
- }
- missing = gTrue;
- }
- } else {
- toUnicode[code] = 0;
- }
- }
-
- // pass 2: try to fill in the missing chars, looking for names of
- // the form 'Axx', 'xx', 'Ann', 'ABnn', or 'nn', where 'A' and 'B'
- // are any letters, 'xx' is two hex digits, and 'nn' is 2-4
- // decimal digits
- if (missing && globalParams->getMapNumericCharNames()) {
- for (code = 0; code < 256; ++code) {
- if ((charName = enc[code]) && !toUnicode[code] &&
- strcmp(charName, ".notdef")) {
- n = strlen(charName);
- code2 = -1;
- if (hex && n == 3 && isalpha(charName[0]) &&
- isxdigit(charName[1]) && isxdigit(charName[2])) {
- sscanf(charName+1, "%x", &code2);
- } else if (hex && n == 2 &&
- isxdigit(charName[0]) && isxdigit(charName[1])) {
- sscanf(charName, "%x", &code2);
- } else if (!hex && n >= 2 && n <= 4 &&
- isdigit(charName[0]) && isdigit(charName[1])) {
- code2 = atoi(charName);
- } else if (n >= 3 && n <= 5 &&
- isdigit(charName[1]) && isdigit(charName[2])) {
- code2 = atoi(charName+1);
- } else if (n >= 4 && n <= 6 &&
- isdigit(charName[2]) && isdigit(charName[3])) {
- code2 = atoi(charName+2);
- }
- if (code2 >= 0 && code2 <= 0xff) {
- toUnicode[code] = (Unicode)code2;
- }
- }
- }
-
- // if the 'mapUnknownCharNames' flag is set, do a simple pass-through
- // mapping for unknown character names
- } else if (missing && globalParams->getMapUnknownCharNames()) {
- for (code = 0; code < 256; ++code) {
- if (!toUnicode[code]) {
- toUnicode[code] = code;
- }
- }
- }
-
- // construct the char code -> Unicode mapping object
- ctu = CharCodeToUnicode::make8BitToUnicode(toUnicode);
-
- // merge in a ToUnicode CMap, if there is one -- this overwrites
- // existing entries in ctu, i.e., the ToUnicode CMap takes
- // precedence, but the other encoding info is allowed to fill in any
- // holes
- readToUnicodeCMap(fontDict, 8, ctu);
-
- // look for a Unicode-to-Unicode mapping
- if (name && (utu = globalParams->getUnicodeToUnicode(name))) {
- for (i = 0; i < 256; ++i) {
- toUnicode[i] = 0;
- }
- ctu2 = CharCodeToUnicode::make8BitToUnicode(toUnicode);
- for (i = 0; i < 256; ++i) {
- n = ctu->mapToUnicode((CharCode)i, uBuf, 8);
- if (n >= 1) {
- n = utu->mapToUnicode((CharCode)uBuf[0], uBuf, 8);
- if (n >= 1) {
- ctu2->setMapping((CharCode)i, uBuf, n);
- }
- }
- }
- utu->decRefCnt();
- delete ctu;
- ctu = ctu2;
- }
-
- //----- get the character widths -----
-
- // initialize all widths
- for (code = 0; code < 256; ++code) {
- widths[code] = missingWidth * 0.001;
- }
-
- // use widths from font dict, if present
- fontDict->lookup("FirstChar", &obj1);
- firstChar = obj1.isInt() ? obj1.getInt() : 0;
- obj1.free();
- if (firstChar < 0 || firstChar > 255) {
- firstChar = 0;
- }
- fontDict->lookup("LastChar", &obj1);
- lastChar = obj1.isInt() ? obj1.getInt() : 255;
- obj1.free();
- if (lastChar < 0 || lastChar > 255) {
- lastChar = 255;
- }
- mul = (type == fontType3) ? fontMat[0] : 0.001;
- fontDict->lookup("Widths", &obj1);
- if (obj1.isArray()) {
- flags |= fontFixedWidth;
- if (obj1.arrayGetLength() < lastChar - firstChar + 1) {
- lastChar = firstChar + obj1.arrayGetLength() - 1;
- }
- for (code = firstChar; code <= lastChar; ++code) {
- obj1.arrayGet(code - firstChar, &obj2);
- if (obj2.isNum()) {
- widths[code] = obj2.getNum() * mul;
- if (widths[code] != widths[firstChar]) {
- flags &= ~fontFixedWidth;
- }
- }
- obj2.free();
- }
-
- // use widths from built-in font
- } else if (builtinFont) {
- // this is a kludge for broken PDF files that encode char 32
- // as .notdef
- if (builtinFont->widths->getWidth("space", &w)) {
- widths[32] = 0.001 * w;
- }
- for (code = 0; code < 256; ++code) {
- if (enc[code] && builtinFont->widths->getWidth(enc[code], &w)) {
- widths[code] = 0.001 * w;
- }
- }
-
- // couldn't find widths -- use defaults
- } else {
- // this is technically an error -- the Widths entry is required
- // for all but the Base-14 fonts -- but certain PDF generators
- // apparently don't include widths for Arial and TimesNewRoman
- if (isFixedWidth()) {
- i = 0;
- } else if (isSerif()) {
- i = 8;
- } else {
- i = 4;
- }
- if (isBold()) {
- i += 2;
- }
- if (isItalic()) {
- i += 1;
- }
- builtinFont = builtinFontSubst[i];
- // this is a kludge for broken PDF files that encode char 32
- // as .notdef
- if (builtinFont->widths->getWidth("space", &w)) {
- widths[32] = 0.001 * w;
- }
- for (code = 0; code < 256; ++code) {
- if (enc[code] && builtinFont->widths->getWidth(enc[code], &w)) {
- widths[code] = 0.001 * w;
- }
- }
- }
- obj1.free();
-
- ok = gTrue;
-}
-
-Gfx8BitFont::~Gfx8BitFont() {
- int i;
-
- for (i = 0; i < 256; ++i) {
- if (encFree[i] && enc[i]) {
- gfree(enc[i]);
- }
- }
- ctu->decRefCnt();
- if (charProcs.isDict()) {
- charProcs.free();
- }
- if (resources.isDict()) {
- resources.free();
- }
-}
-
-int Gfx8BitFont::getNextChar(char *s, int /*len*/, CharCode *code,
- Unicode *u, int uSize, int *uLen,
- double *dx, double *dy, double *ox, double *oy) {
- CharCode c;
-
- *code = c = (CharCode)(*s & 0xff);
- *uLen = ctu->mapToUnicode(c, u, uSize);
- *dx = widths[c];
- *dy = *ox = *oy = 0;
- return 1;
-}
-
-CharCodeToUnicode *Gfx8BitFont::getToUnicode() {
- ctu->incRefCnt();
- return ctu;
-}
-
-Gushort *Gfx8BitFont::getCodeToGIDMap(FoFiTrueType *ff) {
- Gushort *map;
- int cmapPlatform, cmapEncoding;
- int unicodeCmap, macRomanCmap, msSymbolCmap, cmap;
- GBool useMacRoman, useUnicode;
- char *charName;
- Unicode u;
- int code, i, n;
-
- map = (Gushort *)gmallocn(256, sizeof(Gushort));
- for (i = 0; i < 256; ++i) {
- map[i] = 0;
- }
-
- // To match up with the Adobe-defined behaviour, we choose a cmap
- // like this:
- // 1. If the PDF font has an encoding:
- // 1a. If the PDF font specified MacRomanEncoding and the
- // TrueType font has a Macintosh Roman cmap, use it, and
- // reverse map the char names through MacRomanEncoding to
- // get char codes.
- // 1b. If the TrueType font has a Microsoft Unicode cmap or a
- // non-Microsoft Unicode cmap, use it, and use the Unicode
- // indexes, not the char codes.
- // 1c. If the PDF font is symbolic and the TrueType font has a
- // Microsoft Symbol cmap, use it, and use char codes
- // directly (possibly with an offset of 0xf000).
- // 1d. If the TrueType font has a Macintosh Roman cmap, use it,
- // as in case 1a.
- // 2. If the PDF font does not have an encoding or the PDF font is
- // symbolic:
- // 2a. If the TrueType font has a Macintosh Roman cmap, use it,
- // and use char codes directly (possibly with an offset of
- // 0xf000).
- // 2b. If the TrueType font has a Microsoft Symbol cmap, use it,
- // and use char codes directly (possible with an offset of
- // 0xf000).
- // 3. If none of these rules apply, use the first cmap and hope for
- // the best (this shouldn't happen).
- unicodeCmap = macRomanCmap = msSymbolCmap = -1;
- for (i = 0; i < ff->getNumCmaps(); ++i) {
- cmapPlatform = ff->getCmapPlatform(i);
- cmapEncoding = ff->getCmapEncoding(i);
- if ((cmapPlatform == 3 && cmapEncoding == 1) ||
- cmapPlatform == 0) {
- unicodeCmap = i;
- } else if (cmapPlatform == 1 && cmapEncoding == 0) {
- macRomanCmap = i;
- } else if (cmapPlatform == 3 && cmapEncoding == 0) {
- msSymbolCmap = i;
- }
- }
- cmap = 0;
- useMacRoman = gFalse;
- useUnicode = gFalse;
- if (hasEncoding) {
- if (usesMacRomanEnc && macRomanCmap >= 0) {
- cmap = macRomanCmap;
- useMacRoman = gTrue;
- } else if (unicodeCmap >= 0) {
- cmap = unicodeCmap;
- useUnicode = gTrue;
- } else if ((flags & fontSymbolic) && msSymbolCmap >= 0) {
- cmap = msSymbolCmap;
- } else if ((flags & fontSymbolic) && macRomanCmap >= 0) {
- cmap = macRomanCmap;
- } else if (macRomanCmap >= 0) {
- cmap = macRomanCmap;
- useMacRoman = gTrue;
- }
- } else {
- if (msSymbolCmap >= 0) {
- cmap = msSymbolCmap;
- } else if (macRomanCmap >= 0) {
- cmap = macRomanCmap;
- }
- }
-
- // reverse map the char names through MacRomanEncoding, then map the
- // char codes through the cmap
- if (useMacRoman) {
- for (i = 0; i < 256; ++i) {
- if ((charName = enc[i])) {
- if ((code = globalParams->getMacRomanCharCode(charName))) {
- map[i] = ff->mapCodeToGID(cmap, code);
- }
- }
- }
-
- // map Unicode through the cmap
- } else if (useUnicode) {
- for (i = 0; i < 256; ++i) {
- if (((charName = enc[i]) &&
- (u = globalParams->mapNameToUnicode(charName))) ||
- (n = ctu->mapToUnicode((CharCode)i, &u, 1))) {
- map[i] = ff->mapCodeToGID(cmap, u);
- }
- }
-
- // map the char codes through the cmap, possibly with an offset of
- // 0xf000
- } else {
- for (i = 0; i < 256; ++i) {
- if (!(map[i] = ff->mapCodeToGID(cmap, i))) {
- map[i] = ff->mapCodeToGID(cmap, 0xf000 + i);
- }
- }
- }
-
- // try the TrueType 'post' table to handle any unmapped characters
- for (i = 0; i < 256; ++i) {
- if (!map[i] && (charName = enc[i])) {
- map[i] = (Gushort)(int)ff->mapNameToGID(charName);
- }
- }
-
- return map;
-}
-
-Dict *Gfx8BitFont::getCharProcs() {
- return charProcs.isDict() ? charProcs.getDict() : (Dict *)NULL;
-}
-
-Object *Gfx8BitFont::getCharProc(int code, Object *proc) {
- if (enc[code] && charProcs.isDict()) {
- charProcs.dictLookup(enc[code], proc);
- } else {
- proc->initNull();
- }
- return proc;
-}
-
-Dict *Gfx8BitFont::getResources() {
- return resources.isDict() ? resources.getDict() : (Dict *)NULL;
-}
-
-//------------------------------------------------------------------------
-// GfxCIDFont
-//------------------------------------------------------------------------
-
-static int CDECL cmpWidthExcep(const void *w1, const void *w2) {
- return ((GfxFontCIDWidthExcep *)w1)->first -
- ((GfxFontCIDWidthExcep *)w2)->first;
-}
-
-static int CDECL cmpWidthExcepV(const void *w1, const void *w2) {
- return ((GfxFontCIDWidthExcepV *)w1)->first -
- ((GfxFontCIDWidthExcepV *)w2)->first;
-}
-
-GfxCIDFont::GfxCIDFont(XRef *xref, char *tagA, Ref idA, GString *nameA,
- Dict *fontDict):
- GfxFont(tagA, idA, nameA)
-{
- Dict *desFontDict;
- GString *collection, *cMapName;
- Object desFontDictObj;
- Object obj1, obj2, obj3, obj4, obj5, obj6;
- CharCodeToUnicode *utu;
- CharCode c;
- Unicode uBuf[8];
- int c1, c2;
- int excepsSize, i, j, k, n;
-
- ascent = 0.95;
- descent = -0.35;
- fontBBox[0] = fontBBox[1] = fontBBox[2] = fontBBox[3] = 0;
- cMap = NULL;
- ctu = NULL;
- widths.defWidth = 1.0;
- widths.defHeight = -1.0;
- widths.defVY = 0.880;
- widths.exceps = NULL;
- widths.nExceps = 0;
- widths.excepsV = NULL;
- widths.nExcepsV = 0;
- cidToGID = NULL;
- cidToGIDLen = 0;
-
- // get the descendant font
- if (!fontDict->lookup("DescendantFonts", &obj1)->isArray()) {
- error(-1, "Missing DescendantFonts entry in Type 0 font");
- obj1.free();
- goto err1;
- }
- if (!obj1.arrayGet(0, &desFontDictObj)->isDict()) {
- error(-1, "Bad descendant font in Type 0 font");
- goto err3;
- }
- obj1.free();
- desFontDict = desFontDictObj.getDict();
-
- // font type
- if (!desFontDict->lookup("Subtype", &obj1)) {
- error(-1, "Missing Subtype entry in Type 0 descendant font");
- goto err3;
- }
- if (obj1.isName("CIDFontType0")) {
- type = fontCIDType0;
- } else if (obj1.isName("CIDFontType2")) {
- type = fontCIDType2;
- } else {
- error(-1, "Unknown Type 0 descendant font type '%s'",
- obj1.isName() ? obj1.getName() : "???");
- goto err3;
- }
- obj1.free();
-
- // get info from font descriptor
- readFontDescriptor(xref, desFontDict);
-
- // look for an external font file
- findExtFontFile();
-
- //----- encoding info -----
-
- // char collection
- if (!desFontDict->lookup("CIDSystemInfo", &obj1)->isDict()) {
- error(-1, "Missing CIDSystemInfo dictionary in Type 0 descendant font");
- goto err3;
- }
- obj1.dictLookup("Registry", &obj2);
- obj1.dictLookup("Ordering", &obj3);
- if (!obj2.isString() || !obj3.isString()) {
- error(-1, "Invalid CIDSystemInfo dictionary in Type 0 descendant font");
- goto err4;
- }
- collection = obj2.getString()->copy()->append('-')->append(obj3.getString());
- obj3.free();
- obj2.free();
- obj1.free();
-
- // look for a ToUnicode CMap
- if (!(ctu = readToUnicodeCMap(fontDict, 16, NULL))) {
-
- // the "Adobe-Identity" and "Adobe-UCS" collections don't have
- // cidToUnicode files
- if (collection->cmp("Adobe-Identity") &&
- collection->cmp("Adobe-UCS")) {
-
- // look for a user-supplied .cidToUnicode file
- if (!(ctu = globalParams->getCIDToUnicode(collection))) {
- error(-1, "Unknown character collection '%s'",
- collection->getCString());
- // fall-through, assuming the Identity mapping -- this appears
- // to match Adobe's behavior
- }
- }
- }
-
- // look for a Unicode-to-Unicode mapping
- if (name && (utu = globalParams->getUnicodeToUnicode(name))) {
- if (ctu) {
- for (c = 0; c < ctu->getLength(); ++c) {
- n = ctu->mapToUnicode(c, uBuf, 8);
- if (n >= 1) {
- n = utu->mapToUnicode((CharCode)uBuf[0], uBuf, 8);
- if (n >= 1) {
- ctu->setMapping(c, uBuf, n);
- }
- }
- }
- utu->decRefCnt();
- } else {
- ctu = utu;
- }
- }
-
- // encoding (i.e., CMap)
- //~ need to handle a CMap stream here
- //~ also need to deal with the UseCMap entry in the stream dict
- if (!fontDict->lookup("Encoding", &obj1)->isName()) {
- error(-1, "Missing or invalid Encoding entry in Type 0 font");
- delete collection;
- goto err3;
- }
- cMapName = new GString(obj1.getName());
- obj1.free();
- if (!(cMap = globalParams->getCMap(collection, cMapName))) {
- error(-1, "Unknown CMap '%s' for character collection '%s'",
- cMapName->getCString(), collection->getCString());
- delete collection;
- delete cMapName;
- goto err2;
- }
- delete collection;
- delete cMapName;
-
- // CIDToGIDMap (for embedded TrueType fonts)
- if (type == fontCIDType2) {
- desFontDict->lookup("CIDToGIDMap", &obj1);
- if (obj1.isStream()) {
- cidToGIDLen = 0;
- i = 64;
- cidToGID = (Gushort *)gmallocn(i, sizeof(Gushort));
- obj1.streamReset();
- while ((c1 = obj1.streamGetChar()) != EOF &&
- (c2 = obj1.streamGetChar()) != EOF) {
- if (cidToGIDLen == i) {
- i *= 2;
- cidToGID = (Gushort *)greallocn(cidToGID, i, sizeof(Gushort));
- }
- cidToGID[cidToGIDLen++] = (Gushort)((c1 << 8) + c2);
- }
- } else if (!obj1.isName("Identity") && !obj1.isNull()) {
- error(-1, "Invalid CIDToGIDMap entry in CID font");
- }
- obj1.free();
- }
-
- //----- character metrics -----
-
- // default char width
- if (desFontDict->lookup("DW", &obj1)->isInt()) {
- widths.defWidth = obj1.getInt() * 0.001;
- }
- obj1.free();
-
- // char width exceptions
- if (desFontDict->lookup("W", &obj1)->isArray()) {
- excepsSize = 0;
- i = 0;
- while (i + 1 < obj1.arrayGetLength()) {
- obj1.arrayGet(i, &obj2);
- obj1.arrayGet(i + 1, &obj3);
- if (obj2.isInt() && obj3.isInt() && i + 2 < obj1.arrayGetLength()) {
- if (obj1.arrayGet(i + 2, &obj4)->isNum()) {
- if (widths.nExceps == excepsSize) {
- excepsSize += 16;
- widths.exceps = (GfxFontCIDWidthExcep *)
- greallocn(widths.exceps,
- excepsSize, sizeof(GfxFontCIDWidthExcep));
- }
- widths.exceps[widths.nExceps].first = obj2.getInt();
- widths.exceps[widths.nExceps].last = obj3.getInt();
- widths.exceps[widths.nExceps].width = obj4.getNum() * 0.001;
- ++widths.nExceps;
- } else {
- error(-1, "Bad widths array in Type 0 font");
- }
- obj4.free();
- i += 3;
- } else if (obj2.isInt() && obj3.isArray()) {
- if (widths.nExceps + obj3.arrayGetLength() > excepsSize) {
- excepsSize = (widths.nExceps + obj3.arrayGetLength() + 15) & ~15;
- widths.exceps = (GfxFontCIDWidthExcep *)
- greallocn(widths.exceps,
- excepsSize, sizeof(GfxFontCIDWidthExcep));
- }
- j = obj2.getInt();
- for (k = 0; k < obj3.arrayGetLength(); ++k) {
- if (obj3.arrayGet(k, &obj4)->isNum()) {
- widths.exceps[widths.nExceps].first = j;
- widths.exceps[widths.nExceps].last = j;
- widths.exceps[widths.nExceps].width = obj4.getNum() * 0.001;
- ++j;
- ++widths.nExceps;
- } else {
- error(-1, "Bad widths array in Type 0 font");
- }
- obj4.free();
- }
- i += 2;
- } else {
- error(-1, "Bad widths array in Type 0 font");
- ++i;
- }
- obj3.free();
- obj2.free();
- }
- qsort(widths.exceps, widths.nExceps, sizeof(GfxFontCIDWidthExcep),
- &cmpWidthExcep);
- }
- obj1.free();
-
- // default metrics for vertical font
- if (desFontDict->lookup("DW2", &obj1)->isArray() &&
- obj1.arrayGetLength() == 2) {
- if (obj1.arrayGet(0, &obj2)->isNum()) {
- widths.defVY = obj2.getNum() * 0.001;
- }
- obj2.free();
- if (obj1.arrayGet(1, &obj2)->isNum()) {
- widths.defHeight = obj2.getNum() * 0.001;
- }
- obj2.free();
- }
- obj1.free();
-
- // char metric exceptions for vertical font
- if (desFontDict->lookup("W2", &obj1)->isArray()) {
- excepsSize = 0;
- i = 0;
- while (i + 1 < obj1.arrayGetLength()) {
- obj1.arrayGet(i, &obj2);
- obj1.arrayGet(i+ 1, &obj3);
- if (obj2.isInt() && obj3.isInt() && i + 4 < obj1.arrayGetLength()) {
- if (obj1.arrayGet(i + 2, &obj4)->isNum() &&
- obj1.arrayGet(i + 3, &obj5)->isNum() &&
- obj1.arrayGet(i + 4, &obj6)->isNum()) {
- if (widths.nExcepsV == excepsSize) {
- excepsSize += 16;
- widths.excepsV = (GfxFontCIDWidthExcepV *)
- greallocn(widths.excepsV,
- excepsSize, sizeof(GfxFontCIDWidthExcepV));
- }
- widths.excepsV[widths.nExcepsV].first = obj2.getInt();
- widths.excepsV[widths.nExcepsV].last = obj3.getInt();
- widths.excepsV[widths.nExcepsV].height = obj4.getNum() * 0.001;
- widths.excepsV[widths.nExcepsV].vx = obj5.getNum() * 0.001;
- widths.excepsV[widths.nExcepsV].vy = obj6.getNum() * 0.001;
- ++widths.nExcepsV;
- } else {
- error(-1, "Bad widths (W2) array in Type 0 font");
- }
- obj6.free();
- obj5.free();
- obj4.free();
- i += 5;
- } else if (obj2.isInt() && obj3.isArray()) {
- if (widths.nExcepsV + obj3.arrayGetLength() / 3 > excepsSize) {
- excepsSize =
- (widths.nExcepsV + obj3.arrayGetLength() / 3 + 15) & ~15;
- widths.excepsV = (GfxFontCIDWidthExcepV *)
- greallocn(widths.excepsV,
- excepsSize, sizeof(GfxFontCIDWidthExcepV));
- }
- j = obj2.getInt();
- for (k = 0; k < obj3.arrayGetLength(); k += 3) {
- if (obj3.arrayGet(k, &obj4)->isNum() &&
- obj3.arrayGet(k+1, &obj5)->isNum() &&
- obj3.arrayGet(k+2, &obj6)->isNum()) {
- widths.excepsV[widths.nExceps].first = j;
- widths.excepsV[widths.nExceps].last = j;
- widths.excepsV[widths.nExceps].height = obj4.getNum() * 0.001;
- widths.excepsV[widths.nExceps].vx = obj5.getNum() * 0.001;
- widths.excepsV[widths.nExceps].vy = obj6.getNum() * 0.001;
- ++j;
- ++widths.nExcepsV;
- } else {
- error(-1, "Bad widths (W2) array in Type 0 font");
- }
- obj6.free();
- obj5.free();
- obj4.free();
- }
- i += 2;
- } else {
- error(-1, "Bad widths (W2) array in Type 0 font");
- ++i;
- }
- obj3.free();
- obj2.free();
- }
- qsort(widths.excepsV, widths.nExcepsV, sizeof(GfxFontCIDWidthExcepV),
- &cmpWidthExcepV);
- }
- obj1.free();
-
- desFontDictObj.free();
- ok = gTrue;
- return;
-
- err4:
- obj3.free();
- obj2.free();
- err3:
- obj1.free();
- err2:
- desFontDictObj.free();
- err1:;
-}
-
-GfxCIDFont::~GfxCIDFont() {
- if (cMap) {
- cMap->decRefCnt();
- }
- if (ctu) {
- ctu->decRefCnt();
- }
- gfree(widths.exceps);
- gfree(widths.excepsV);
- if (cidToGID) {
- gfree(cidToGID);
- }
-}
-
-int GfxCIDFont::getNextChar(char *s, int len, CharCode *code,
- Unicode *u, int uSize, int *uLen,
- double *dx, double *dy, double *ox, double *oy) {
- CID cid;
- double w, h, vx, vy;
- int n, a, b, m;
-
- if (!cMap) {
- *code = 0;
- *uLen = 0;
- *dx = *dy = 0;
- return 1;
- }
-
- *code = (CharCode)(cid = cMap->getCID(s, len, &n));
- if (ctu) {
- *uLen = ctu->mapToUnicode(cid, u, uSize);
- } else {
- *uLen = 0;
- }
-
- // horizontal
- if (cMap->getWMode() == 0) {
- w = widths.defWidth;
- h = vx = vy = 0;
- if (widths.nExceps > 0 && cid >= widths.exceps[0].first) {
- a = 0;
- b = widths.nExceps;
- // invariant: widths.exceps[a].first <= cid < widths.exceps[b].first
- while (b - a > 1) {
- m = (a + b) / 2;
- if (widths.exceps[m].first <= cid) {
- a = m;
- } else {
- b = m;
- }
- }
- if (cid <= widths.exceps[a].last) {
- w = widths.exceps[a].width;
- }
- }
-
- // vertical
- } else {
- w = 0;
- h = widths.defHeight;
- vx = widths.defWidth / 2;
- vy = widths.defVY;
- if (widths.nExcepsV > 0 && cid >= widths.excepsV[0].first) {
- a = 0;
- b = widths.nExcepsV;
- // invariant: widths.excepsV[a].first <= cid < widths.excepsV[b].first
- while (b - a > 1) {
- m = (a + b) / 2;
- if (widths.excepsV[m].last <= cid) {
- a = m;
- } else {
- b = m;
- }
- }
- if (cid <= widths.excepsV[a].last) {
- h = widths.excepsV[a].height;
- vx = widths.excepsV[a].vx;
- vy = widths.excepsV[a].vy;
- }
- }
- }
-
- *dx = w;
- *dy = h;
- *ox = vx;
- *oy = vy;
-
- return n;
-}
-
-int GfxCIDFont::getWMode() {
- return cMap ? cMap->getWMode() : 0;
-}
-
-CharCodeToUnicode *GfxCIDFont::getToUnicode() {
- if (ctu) {
- ctu->incRefCnt();
- }
- return ctu;
-}
-
-GString *GfxCIDFont::getCollection() {
- return cMap ? cMap->getCollection() : (GString *)NULL;
-}
-
-Gushort *GfxCIDFont::getCodeToGIDMap(FoFiTrueType *ff, int *mapsizep) {
- Gushort *map;
- int cmapPlatform, cmapEncoding;
- int /*unicodeCmap, macRomanCmap, msSymbolCmap, */cmap;
-// GBool useMacRoman, useUnicode;
-// char *charName;
- Unicode u;
- int /*code, */i;
- int mapsize;
- int cidlen;
-
- *mapsizep = 0;
- if (!ctu) return NULL;
-
- /* we use only unicode cmap */
- cmap = -1;
- for (i = 0; i < ff->getNumCmaps(); ++i) {
- cmapPlatform = ff->getCmapPlatform(i);
- cmapEncoding = ff->getCmapEncoding(i);
- if ((cmapPlatform == 3 && cmapEncoding == 1) || cmapPlatform == 0)
- cmap = i;
- }
- if (cmap < 0)
- return NULL;
-
- cidlen = 0;
- mapsize = 64;
- map = (Gushort *)gmalloc(mapsize * sizeof(Gushort));
-
- while (cidlen < ctu->getLength()) {
- int n;
- if ((n = ctu->mapToUnicode((CharCode)cidlen, &u, 1)) == 0) {
- cidlen++;
- continue;
- }
- if (cidlen >= mapsize) {
- while (cidlen >= mapsize)
- mapsize *= 2;
- map = (Gushort *)grealloc(map, mapsize * sizeof(Gushort));
- }
- map[cidlen] = ff->mapCodeToGID(cmap, u);
- cidlen++;
- }
-
- *mapsizep = cidlen;
- return map;
-}
-
-//------------------------------------------------------------------------
-// GfxFontDict
-//------------------------------------------------------------------------
-
-GfxFontDict::GfxFontDict(XRef *xref, Ref *fontDictRef, Dict *fontDict) {
- int i;
- Object obj1, obj2;
- Ref r;
-
- numFonts = fontDict->getLength();
- fonts = (GfxFont **)gmallocn(numFonts, sizeof(GfxFont *));
- for (i = 0; i < numFonts; ++i) {
- fontDict->getValNF(i, &obj1);
- obj1.fetch(xref, &obj2);
- if (obj2.isDict()) {
- if (obj1.isRef()) {
- r = obj1.getRef();
- } else {
- // no indirect reference for this font, so invent a unique one
- // (legal generation numbers are five digits, so any 6-digit
- // number would be safe)
- r.num = i;
- if (fontDictRef) {
- r.gen = 100000 + fontDictRef->num;
- } else {
- r.gen = 999999;
- }
- }
- fonts[i] = GfxFont::makeFont(xref, fontDict->getKey(i),
- r, obj2.getDict());
- if (fonts[i] && !fonts[i]->isOk()) {
- delete fonts[i];
- fonts[i] = NULL;
- }
- } else {
- error(-1, "font resource is not a dictionary");
- fonts[i] = NULL;
- }
- obj1.free();
- obj2.free();
- }
-}
-
-GfxFontDict::~GfxFontDict() {
- int i;
-
- for (i = 0; i < numFonts; ++i) {
- if (fonts[i]) {
- delete fonts[i];
- }
- }
- gfree(fonts);
-}
-
-GfxFont *GfxFontDict::lookup(char *tag) {
- int i;
-
- for (i = 0; i < numFonts; ++i) {
- if (fonts[i] && fonts[i]->matches(tag)) {
- return fonts[i];
- }
- }
- return NULL;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 19:54:24 +0000