summaryrefslogtreecommitdiffstats
path: root/kpdf/xpdf/xpdf/GfxFont.cc
diff options
context:
space:
mode:
Diffstat (limited to 'kpdf/xpdf/xpdf/GfxFont.cc')
-rw-r--r--kpdf/xpdf/xpdf/GfxFont.cc1616
1 files changed, 1616 insertions, 0 deletions
diff --git a/kpdf/xpdf/xpdf/GfxFont.cc b/kpdf/xpdf/xpdf/GfxFont.cc
new file mode 100644
index 00000000..8694be47
--- /dev/null
+++ b/kpdf/xpdf/xpdf/GfxFont.cc
@@ -0,0 +1,1616 @@
+//========================================================================
+//
+// 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 14:58:41 +0000