X-Git-Url: http://git.asbjorn.biz/?p=swftools.git;a=blobdiff_plain;f=pdf2swf%2Fxpdf%2FXRef.cc;fp=pdf2swf%2Fxpdf%2FXRef.cc;h=0000000000000000000000000000000000000000;hp=b3715412fd55903b87e69d54a2bd8068c1dcc732;hb=5a005ef586b9000810156a961b9622c903dce988;hpb=c26ca847941ca0acfc9f3b4bdc519d904ba09a39

diff --git a/pdf2swf/xpdf/XRef.cc b/pdf2swf/xpdf/XRef.cc
deleted file mode 100644
index b371541..0000000
--- a/pdf2swf/xpdf/XRef.cc
+++ /dev/null
@@ -1,888 +0,0 @@
-//========================================================================
-//
-// XRef.cc
-//
-// Copyright 1996-2003 Glyph & Cog, LLC
-//
-//========================================================================
-
-#include <aconf.h>
-
-#ifdef USE_GCC_PRAGMAS
-#pragma implementation
-#endif
-
-#include <stdlib.h>
-#include <stddef.h>
-#include <string.h>
-#include <ctype.h>
-#include "gmem.h"
-#include "Object.h"
-#include "Stream.h"
-#include "Lexer.h"
-#include "Parser.h"
-#include "Dict.h"
-#include "Error.h"
-#include "ErrorCodes.h"
-#include "XRef.h"
-
-//------------------------------------------------------------------------
-
-#define xrefSearchSize 1024	// read this many bytes at end of file
-				//   to look for 'startxref'
-
-//------------------------------------------------------------------------
-// Permission bits
-//------------------------------------------------------------------------
-
-#define permPrint    (1<<2)
-#define permChange   (1<<3)
-#define permCopy     (1<<4)
-#define permNotes    (1<<5)
-#define defPermFlags 0xfffc
-
-//------------------------------------------------------------------------
-// ObjectStream
-//------------------------------------------------------------------------
-
-class ObjectStream {
-public:
-
-  // Create an object stream, using object number <objStrNum>,
-  // generation 0.
-  ObjectStream(XRef *xref, int objStrNumA);
-
-  ~ObjectStream();
-
-  // Return the object number of this object stream.
-  int getObjStrNum() { return objStrNum; }
-
-  // Get the <objIdx>th object from this stream, which should be
-  // object number <objNum>, generation 0.
-  Object *getObject(int objIdx, int objNum, Object *obj);
-
-private:
-
-  int objStrNum;		// object number of the object stream
-  int nObjects;			// number of objects in the stream
-  Object *objs;			// the objects (length = nObjects)
-  int *objNums;			// the object numbers (length = nObjects)
-};
-
-ObjectStream::ObjectStream(XRef *xref, int objStrNumA) {
-  Stream *str;
-  Parser *parser;
-  int *offsets;
-  Object objStr, obj1, obj2;
-  int first, i;
-
-  objStrNum = objStrNumA;
-  nObjects = 0;
-  objs = NULL;
-  objNums = NULL;
-
-  if (!xref->fetch(objStrNum, 0, &objStr)->isStream()) {
-    goto err1;
-  }
-
-  if (!objStr.streamGetDict()->lookup("N", &obj1)->isInt()) {
-    obj1.free();
-    goto err1;
-  }
-  nObjects = obj1.getInt();
-  obj1.free();
-  if (nObjects <= 0) {
-    goto err1;
-  }
-
-  if (!objStr.streamGetDict()->lookup("First", &obj1)->isInt()) {
-    obj1.free();
-    goto err1;
-  }
-  first = obj1.getInt();
-  obj1.free();
-  if (first < 0) {
-    goto err1;
-  }
-
-  objs = new Object[nObjects];
-  objNums = (int *)gmallocn(nObjects, sizeof(int));
-  offsets = (int *)gmallocn(nObjects, sizeof(int));
-
-  // parse the header: object numbers and offsets
-  objStr.streamReset();
-  obj1.initNull();
-  str = new EmbedStream(objStr.getStream(), &obj1, gTrue, first);
-  parser = new Parser(xref, new Lexer(xref, str));
-  for (i = 0; i < nObjects; ++i) {
-    parser->getObj(&obj1);
-    parser->getObj(&obj2);
-    if (!obj1.isInt() || !obj2.isInt()) {
-      obj1.free();
-      obj2.free();
-      delete parser;
-      gfree(offsets);
-      goto err1;
-    }
-    objNums[i] = obj1.getInt();
-    offsets[i] = obj2.getInt();
-    obj1.free();
-    obj2.free();
-    if (objNums[i] < 0 || offsets[i] < 0 ||
-	(i > 0 && offsets[i] < offsets[i-1])) {
-      delete parser;
-      gfree(offsets);
-      goto err1;
-    }
-  }
-  while (str->getChar() != EOF) ;
-  delete parser;
-
-  // skip to the first object - this shouldn't be necessary because
-  // the First key is supposed to be equal to offsets[0], but just in
-  // case...
-  for (i = first; i < offsets[0]; ++i) {
-    objStr.getStream()->getChar();
-  }
-
-  // parse the objects
-  for (i = 0; i < nObjects; ++i) {
-    obj1.initNull();
-    if (i == nObjects - 1) {
-      str = new EmbedStream(objStr.getStream(), &obj1, gFalse, 0);
-    } else {
-      str = new EmbedStream(objStr.getStream(), &obj1, gTrue,
-			    offsets[i+1] - offsets[i]);
-    }
-    parser = new Parser(xref, new Lexer(xref, str));
-    parser->getObj(&objs[i]);
-    while (str->getChar() != EOF) ;
-    delete parser;
-  }
-
-  gfree(offsets);
-
- err1:
-  objStr.free();
-  return;
-}
-
-ObjectStream::~ObjectStream() {
-  int i;
-
-  if (objs) {
-    for (i = 0; i < nObjects; ++i) {
-      objs[i].free();
-    }
-    delete[] objs;
-  }
-  gfree(objNums);
-}
-
-Object *ObjectStream::getObject(int objIdx, int objNum, Object *obj) {
-  if (objIdx < 0 || objIdx >= nObjects || objNum != objNums[objIdx]) {
-    return obj->initNull();
-  }
-  return objs[objIdx].copy(obj);
-}
-
-//------------------------------------------------------------------------
-// XRef
-//------------------------------------------------------------------------
-
-XRef::XRef(BaseStream *strA) {
-  Guint pos;
-  Object obj;
-
-  ok = gTrue;
-  errCode = errNone;
-  size = 0;
-  entries = NULL;
-  streamEnds = NULL;
-  streamEndsLen = 0;
-  objStr = NULL;
-
-  encrypted = gFalse;
-  permFlags = defPermFlags;
-  ownerPasswordOk = gFalse;
-
-  // read the trailer
-  str = strA;
-  start = str->getStart();
-  pos = getStartXref();
-
-  // if there was a problem with the 'startxref' position, try to
-  // reconstruct the xref table
-  if (pos == 0) {
-    if (!(ok = constructXRef())) {
-      errCode = errDamaged;
-      return;
-    }
-
-  // read the xref table
-  } else {
-    while (readXRef(&pos)) ;
-
-    // if there was a problem with the xref table,
-    // try to reconstruct it
-    if (!ok) {
-      if (!(ok = constructXRef())) {
-	errCode = errDamaged;
-	return;
-      }
-    }
-  }
-
-  // get the root dictionary (catalog) object
-  trailerDict.dictLookupNF("Root", &obj);
-  if (obj.isRef()) {
-    rootNum = obj.getRefNum();
-    rootGen = obj.getRefGen();
-    obj.free();
-  } else {
-    obj.free();
-    if (!(ok = constructXRef())) {
-      errCode = errDamaged;
-      return;
-    }
-  }
-
-  // now set the trailer dictionary's xref pointer so we can fetch
-  // indirect objects from it
-  trailerDict.getDict()->setXRef(this);
-}
-
-XRef::~XRef() {
-  gfree(entries);
-  trailerDict.free();
-  if (streamEnds) {
-    gfree(streamEnds);
-  }
-  if (objStr) {
-    delete objStr;
-  }
-}
-
-// Read the 'startxref' position.
-Guint XRef::getStartXref() {
-  char buf[xrefSearchSize+1];
-  char *p;
-  int c, n, i;
-
-  // read last xrefSearchSize bytes
-  str->setPos(xrefSearchSize, -1);
-  for (n = 0; n < xrefSearchSize; ++n) {
-    if ((c = str->getChar()) == EOF) {
-      break;
-    }
-    buf[n] = c;
-  }
-  buf[n] = '\0';
-
-  // find startxref
-  for (i = n - 9; i >= 0; --i) {
-    if (!strncmp(&buf[i], "startxref", 9)) {
-      break;
-    }
-  }
-  if (i < 0) {
-    return 0;
-  }
-  for (p = &buf[i+9]; isspace(*p); ++p) ;
-  lastXRefPos = strToUnsigned(p);
-
-  return lastXRefPos;
-}
-
-// Read one xref table section.  Also reads the associated trailer
-// dictionary, and returns the prev pointer (if any).
-GBool XRef::readXRef(Guint *pos) {
-  Parser *parser;
-  Object obj;
-  GBool more;
-
-  // start up a parser, parse one token
-  obj.initNull();
-  parser = new Parser(NULL,
-	     new Lexer(NULL,
-	       str->makeSubStream(start + *pos, gFalse, 0, &obj)));
-  parser->getObj(&obj);
-
-  // parse an old-style xref table
-  if (obj.isCmd("xref")) {
-    obj.free();
-    more = readXRefTable(parser, pos);
-
-  // parse an xref stream
-  } else if (obj.isInt()) {
-    obj.free();
-    if (!parser->getObj(&obj)->isInt()) {
-      goto err1;
-    }
-    obj.free();
-    if (!parser->getObj(&obj)->isCmd("obj")) {
-      goto err1;
-    }
-    obj.free();
-    if (!parser->getObj(&obj)->isStream()) {
-      goto err1;
-    }
-    more = readXRefStream(obj.getStream(), pos);
-    obj.free();
-
-  } else {
-    goto err1;
-  }
-
-  delete parser;
-  return more;
-
- err1:
-  obj.free();
-  delete parser;
-  ok = gFalse;
-  return gFalse;
-}
-
-GBool XRef::readXRefTable(Parser *parser, Guint *pos) {
-  XRefEntry entry;
-  GBool more;
-  Object obj, obj2;
-  Guint pos2;
-  int first, n, newSize, i;
-
-  while (1) {
-    parser->getObj(&obj);
-    if (obj.isCmd("trailer")) {
-      obj.free();
-      break;
-    }
-    if (!obj.isInt()) {
-      goto err1;
-    }
-    first = obj.getInt();
-    obj.free();
-    if (!parser->getObj(&obj)->isInt()) {
-      goto err1;
-    }
-    n = obj.getInt();
-    obj.free();
-    if (first < 0 || n < 0 || first + n < 0) {
-      goto err1;
-    }
-    if (first + n > size) {
-      for (newSize = size ? 2 * size : 1024;
-	   first + n > newSize && newSize > 0;
-	   newSize <<= 1) ;
-      if (newSize < 0) {
-	goto err1;
-      }
-      entries = (XRefEntry *)greallocn(entries, newSize, sizeof(XRefEntry));
-      for (i = size; i < newSize; ++i) {
-	entries[i].offset = 0xffffffff;
-	entries[i].type = xrefEntryFree;
-      }
-      size = newSize;
-    }
-    for (i = first; i < first + n; ++i) {
-      if (!parser->getObj(&obj)->isInt()) {
-	goto err1;
-      }
-      entry.offset = (Guint)obj.getInt();
-      obj.free();
-      if (!parser->getObj(&obj)->isInt()) {
-	goto err1;
-      }
-      entry.gen = obj.getInt();
-      obj.free();
-      parser->getObj(&obj);
-      if (obj.isCmd("n")) {
-	entry.type = xrefEntryUncompressed;
-      } else if (obj.isCmd("f")) {
-	entry.type = xrefEntryFree;
-      } else {
-	goto err1;
-      }
-      obj.free();
-      if (entries[i].offset == 0xffffffff) {
-	entries[i] = entry;
-	// PDF files of patents from the IBM Intellectual Property
-	// Network have a bug: the xref table claims to start at 1
-	// instead of 0.
-	if (i == 1 && first == 1 &&
-	    entries[1].offset == 0 && entries[1].gen == 65535 &&
-	    entries[1].type == xrefEntryFree) {
-	  i = first = 0;
-	  entries[0] = entries[1];
-	  entries[1].offset = 0xffffffff;
-	}
-      }
-    }
-  }
-
-  // read the trailer dictionary
-  if (!parser->getObj(&obj)->isDict()) {
-    goto err1;
-  }
-
-  // get the 'Prev' pointer
-  obj.getDict()->lookupNF("Prev", &obj2);
-  if (obj2.isInt()) {
-    *pos = (Guint)obj2.getInt();
-    more = gTrue;
-  } else if (obj2.isRef()) {
-    // certain buggy PDF generators generate "/Prev NNN 0 R" instead
-    // of "/Prev NNN"
-    *pos = (Guint)obj2.getRefNum();
-    more = gTrue;
-  } else {
-    more = gFalse;
-  }
-  obj2.free();
-
-  // save the first trailer dictionary
-  if (trailerDict.isNone()) {
-    obj.copy(&trailerDict);
-  }
-
-  // check for an 'XRefStm' key
-  if (obj.getDict()->lookup("XRefStm", &obj2)->isInt()) {
-    pos2 = (Guint)obj2.getInt();
-    readXRef(&pos2);
-    if (!ok) {
-      obj2.free();
-      goto err1;
-    }
-  }
-  obj2.free();
-
-  obj.free();
-  return more;
-
- err1:
-  obj.free();
-  ok = gFalse;
-  return gFalse;
-}
-
-GBool XRef::readXRefStream(Stream *xrefStr, Guint *pos) {
-  Dict *dict;
-  int w[3];
-  GBool more;
-  Object obj, obj2, idx;
-  int newSize, first, n, i;
-
-  dict = xrefStr->getDict();
-
-  if (!dict->lookupNF("Size", &obj)->isInt()) {
-    goto err1;
-  }
-  newSize = obj.getInt();
-  obj.free();
-  if (newSize < 0) {
-    goto err1;
-  }
-  if (newSize > size) {
-    entries = (XRefEntry *)greallocn(entries, newSize, sizeof(XRefEntry));
-    for (i = size; i < newSize; ++i) {
-      entries[i].offset = 0xffffffff;
-      entries[i].type = xrefEntryFree;
-    }
-    size = newSize;
-  }
-
-  if (!dict->lookupNF("W", &obj)->isArray() ||
-      obj.arrayGetLength() < 3) {
-    goto err1;
-  }
-  for (i = 0; i < 3; ++i) {
-    if (!obj.arrayGet(i, &obj2)->isInt()) {
-      obj2.free();
-      goto err1;
-    }
-    w[i] = obj2.getInt();
-    obj2.free();
-    if (w[i] < 0 || w[i] > 4) {
-      goto err1;
-    }
-  }
-  obj.free();
-
-  xrefStr->reset();
-  dict->lookupNF("Index", &idx);
-  if (idx.isArray()) {
-    for (i = 0; i+1 < idx.arrayGetLength(); i += 2) {
-      if (!idx.arrayGet(i, &obj)->isInt()) {
-	idx.free();
-	goto err1;
-      }
-      first = obj.getInt();
-      obj.free();
-      if (!idx.arrayGet(i+1, &obj)->isInt()) {
-	idx.free();
-	goto err1;
-      }
-      n = obj.getInt();
-      obj.free();
-      if (first < 0 || n < 0 ||
-	  !readXRefStreamSection(xrefStr, w, first, n)) {
-	idx.free();
-	goto err0;
-      }
-    }
-  } else {
-    if (!readXRefStreamSection(xrefStr, w, 0, newSize)) {
-      idx.free();
-      goto err0;
-    }
-  }
-  idx.free();
-
-  dict->lookupNF("Prev", &obj);
-  if (obj.isInt()) {
-    *pos = (Guint)obj.getInt();
-    more = gTrue;
-  } else {
-    more = gFalse;
-  }
-  obj.free();
-  if (trailerDict.isNone()) {
-    trailerDict.initDict(dict);
-  }
-
-  return more;
-
- err1:
-  obj.free();
- err0:
-  ok = gFalse;
-  return gFalse;
-}
-
-GBool XRef::readXRefStreamSection(Stream *xrefStr, int *w, int first, int n) {
-  Guint offset;
-  int type, gen, c, newSize, i, j;
-
-  if (first + n < 0) {
-    return gFalse;
-  }
-  if (first + n > size) {
-    for (newSize = size ? 2 * size : 1024;
-	 first + n > newSize && newSize > 0;
-	 newSize <<= 1) ;
-    if (newSize < 0) {
-      return gFalse;
-    }
-    entries = (XRefEntry *)greallocn(entries, newSize, sizeof(XRefEntry));
-    for (i = size; i < newSize; ++i) {
-      entries[i].offset = 0xffffffff;
-      entries[i].type = xrefEntryFree;
-    }
-    size = newSize;
-  }
-  for (i = first; i < first + n; ++i) {
-    if (w[0] == 0) {
-      type = 1;
-    } else {
-      for (type = 0, j = 0; j < w[0]; ++j) {
-	if ((c = xrefStr->getChar()) == EOF) {
-	  return gFalse;
-	}
-	type = (type << 8) + c;
-      }
-    }
-    for (offset = 0, j = 0; j < w[1]; ++j) {
-      if ((c = xrefStr->getChar()) == EOF) {
-	return gFalse;
-      }
-      offset = (offset << 8) + c;
-    }
-    for (gen = 0, j = 0; j < w[2]; ++j) {
-      if ((c = xrefStr->getChar()) == EOF) {
-	return gFalse;
-      }
-      gen = (gen << 8) + c;
-    }
-    if (entries[i].offset == 0xffffffff) {
-      switch (type) {
-      case 0:
-	entries[i].offset = offset;
-	entries[i].gen = gen;
-	entries[i].type = xrefEntryFree;
-	break;
-      case 1:
-	entries[i].offset = offset;
-	entries[i].gen = gen;
-	entries[i].type = xrefEntryUncompressed;
-	break;
-      case 2:
-	entries[i].offset = offset;
-	entries[i].gen = gen;
-	entries[i].type = xrefEntryCompressed;
-	break;
-      default:
-	return gFalse;
-      }
-    }
-  }
-
-  return gTrue;
-}
-
-// Attempt to construct an xref table for a damaged file.
-GBool XRef::constructXRef() {
-  Parser *parser;
-  Object newTrailerDict, obj;
-  char buf[256];
-  Guint pos;
-  int num, gen;
-  int newSize;
-  int streamEndsSize;
-  char *p;
-  int i;
-  GBool gotRoot;
-
-  gfree(entries);
-  size = 0;
-  entries = NULL;
-
-  error(0, "PDF file is damaged - attempting to reconstruct xref table...");
-  gotRoot = gFalse;
-  streamEndsLen = streamEndsSize = 0;
-
-  str->reset();
-  while (1) {
-    pos = str->getPos();
-    if (!str->getLine(buf, 256)) {
-      break;
-    }
-    p = buf;
-
-    // got trailer dictionary
-    if (!strncmp(p, "trailer", 7)) {
-      obj.initNull();
-      parser = new Parser(NULL,
-		 new Lexer(NULL,
-		   str->makeSubStream(pos + 7, gFalse, 0, &obj)));
-      parser->getObj(&newTrailerDict);
-      if (newTrailerDict.isDict()) {
-	newTrailerDict.dictLookupNF("Root", &obj);
-	if (obj.isRef()) {
-	  rootNum = obj.getRefNum();
-	  rootGen = obj.getRefGen();
-	  if (!trailerDict.isNone()) {
-	    trailerDict.free();
-	  }
-	  newTrailerDict.copy(&trailerDict);
-	  gotRoot = gTrue;
-	}
-	obj.free();
-      }
-      newTrailerDict.free();
-      delete parser;
-
-    // look for object
-    } else if (isdigit(*p)) {
-      num = atoi(p);
-      if (num > 0) {
-	do {
-	  ++p;
-	} while (*p && isdigit(*p));
-	if (isspace(*p)) {
-	  do {
-	    ++p;
-	  } while (*p && isspace(*p));
-	  if (isdigit(*p)) {
-	    gen = atoi(p);
-	    do {
-	      ++p;
-	    } while (*p && isdigit(*p));
-	    if (isspace(*p)) {
-	      do {
-		++p;
-	      } while (*p && isspace(*p));
-	      if (!strncmp(p, "obj", 3)) {
-		if (num >= size) {
-		  newSize = (num + 1 + 255) & ~255;
-		  if (newSize < 0) {
-		    error(-1, "Bad object number");
-		    return gFalse;
-		  }
-		  entries = (XRefEntry *)
-		      greallocn(entries, newSize, sizeof(XRefEntry));
-		  for (i = size; i < newSize; ++i) {
-		    entries[i].offset = 0xffffffff;
-		    entries[i].type = xrefEntryFree;
-		  }
-		  size = newSize;
-		}
-		if (entries[num].type == xrefEntryFree ||
-		    gen >= entries[num].gen) {
-		  entries[num].offset = pos - start;
-		  entries[num].gen = gen;
-		  entries[num].type = xrefEntryUncompressed;
-		}
-	      }
-	    }
-	  }
-	}
-      }
-
-    } else if (!strncmp(p, "endstream", 9)) {
-      if (streamEndsLen == streamEndsSize) {
-	streamEndsSize += 64;
-	streamEnds = (Guint *)greallocn(streamEnds,
-					streamEndsSize, sizeof(int));
-      }
-      streamEnds[streamEndsLen++] = pos;
-    }
-  }
-
-  if (gotRoot)
-    return gTrue;
-
-  error(-1, "Couldn't find trailer dictionary");
-  return gFalse;
-}
-
-void XRef::setEncryption(int permFlagsA, GBool ownerPasswordOkA,
-			 Guchar *fileKeyA, int keyLengthA, int encVersionA) {
-  int i;
-
-  encrypted = gTrue;
-  permFlags = permFlagsA;
-  ownerPasswordOk = ownerPasswordOkA;
-  if (keyLengthA <= 16) {
-    keyLength = keyLengthA;
-  } else {
-    keyLength = 16;
-  }
-  for (i = 0; i < keyLength; ++i) {
-    fileKey[i] = fileKeyA[i];
-  }
-  encVersion = encVersionA;
-}
-
-GBool XRef::okToPrint(GBool ignoreOwnerPW) {
-  return (!ignoreOwnerPW && ownerPasswordOk) || (permFlags & permPrint);
-}
-
-GBool XRef::okToChange(GBool ignoreOwnerPW) {
-  return (!ignoreOwnerPW && ownerPasswordOk) || (permFlags & permChange);
-}
-
-GBool XRef::okToCopy(GBool ignoreOwnerPW) {
-  return (!ignoreOwnerPW && ownerPasswordOk) || (permFlags & permCopy);
-}
-
-GBool XRef::okToAddNotes(GBool ignoreOwnerPW) {
-  return (!ignoreOwnerPW && ownerPasswordOk) || (permFlags & permNotes);
-}
-
-Object *XRef::fetch(int num, int gen, Object *obj) {
-  XRefEntry *e;
-  Parser *parser;
-  Object obj1, obj2, obj3;
-
-  // check for bogus ref - this can happen in corrupted PDF files
-  if (num < 0 || num >= size) {
-    goto err;
-  }
-
-  e = &entries[num];
-  switch (e->type) {
-
-  case xrefEntryUncompressed:
-    if (e->gen != gen) {
-      goto err;
-    }
-    obj1.initNull();
-    parser = new Parser(this,
-	       new Lexer(this,
-		 str->makeSubStream(start + e->offset, gFalse, 0, &obj1)));
-    parser->getObj(&obj1);
-    parser->getObj(&obj2);
-    parser->getObj(&obj3);
-    if (!obj1.isInt() || obj1.getInt() != num ||
-	!obj2.isInt() || obj2.getInt() != gen ||
-	!obj3.isCmd("obj")) {
-      obj1.free();
-      obj2.free();
-      obj3.free();
-      delete parser;
-      goto err;
-    }
-    parser->getObj(obj, encrypted ? fileKey : (Guchar *)NULL, keyLength,
-		   num, gen);
-    obj1.free();
-    obj2.free();
-    obj3.free();
-    delete parser;
-    break;
-
-  case xrefEntryCompressed:
-    if (gen != 0) {
-      goto err;
-    }
-    if (!objStr || objStr->getObjStrNum() != (int)e->offset) {
-      if (objStr) {
-	delete objStr;
-      }
-      objStr = new ObjectStream(this, e->offset);
-    }
-    objStr->getObject(e->gen, num, obj);
-    break;
-
-  default:
-    goto err;
-  }
-
-  return obj;
-
- err:
-  return obj->initNull();
-}
-
-Object *XRef::getDocInfo(Object *obj) {
-  return trailerDict.dictLookup("Info", obj);
-}
-
-// Added for the pdftex project.
-Object *XRef::getDocInfoNF(Object *obj) {
-  return trailerDict.dictLookupNF("Info", obj);
-}
-
-GBool XRef::getStreamEnd(Guint streamStart, Guint *streamEnd) {
-  int a, b, m;
-
-  if (streamEndsLen == 0 ||
-      streamStart > streamEnds[streamEndsLen - 1]) {
-    return gFalse;
-  }
-
-  a = -1;
-  b = streamEndsLen - 1;
-  // invariant: streamEnds[a] < streamStart <= streamEnds[b]
-  while (b - a > 1) {
-    m = (a + b) / 2;
-    if (streamStart <= streamEnds[m]) {
-      b = m;
-    } else {
-      a = m;
-    }
-  }
-  *streamEnd = streamEnds[b];
-  return gTrue;
-}
-
-Guint XRef::strToUnsigned(char *s) {
-  Guint x;
-  char *p;
-  int i;
-
-  x = 0;
-  for (p = s, i = 0; *p && isdigit(*p) && i < 10; ++p, ++i) {
-    x = 10 * x + (*p - '0');
-  }
-  return x;
-}