psoutputdev.cc

source code: Covert TXT to PDF

//========================================================================
//
// PSOutputDev.cc
//
// Copyright 1996-2002 Glyph & Cog, LLC
//
//========================================================================

#include <aconf.h>

#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif

#include <stdio.h>
#include <stddef.h>
#include <stdarg.h>
#include <signal.h>
#include <math.h>
#include "GString.h"
#include "config.h"
#include "GlobalParams.h"
#include "Object.h"
#include "Error.h"
#include "Function.h"
#include "Gfx.h"
#include "GfxState.h"
#include "GfxFont.h"
#include "CharCodeToUnicode.h"
#include "UnicodeMap.h"
#include "FontFile.h"
#include "Catalog.h"
#include "Page.h"
#include "Stream.h"
#include "Annot.h"
#include "PSOutputDev.h"

#ifdef MACOS
// needed for setting type/creator of MacOS files
#include "ICSupport.h"
#endif

//------------------------------------------------------------------------
// PostScript prolog and setup
//------------------------------------------------------------------------

static char *prolog[] = {
  "/xpdf 75 dict def xpdf begin",
  "% PDF special state",
  "/pdfDictSize 14 def",
  "/pdfSetup {",
  "  3 1 roll 2 array astore",
  "  /setpagedevice where {",
  "    pop 3 dict begin",
  "      /PageSize exch def",
  "      /ImagingBBox null def",
  "      /Policies 1 dict dup begin /PageSize 3 def end def",
  "      { /Duplex true def } if",
  "    currentdict end setpagedevice",
  "  } {",
  "    pop pop",
  "  } ifelse",
  "} def",
  "/pdfStartPage {",
  "  pdfDictSize dict begin",
  "  /pdfFill [0] def",
  "  /pdfStroke [0] def",
  "  /pdfLastFill false def",
  "  /pdfLastStroke false def",
  "  /pdfTextMat [1 0 0 1 0 0] def",
  "  /pdfFontSize 0 def",
  "  /pdfCharSpacing 0 def",
  "  /pdfTextRender 0 def",
  "  /pdfTextRise 0 def",
  "  /pdfWordSpacing 0 def",
  "  /pdfHorizScaling 1 def",
  "} def",
  "/pdfEndPage { end } def",
  "% separation convention operators",
  "/findcmykcustomcolor where {",
  "  pop",
  "}{",
  "  /findcmykcustomcolor { 5 array astore } def",
  "} ifelse",
  "/setcustomcolor where {",
  "  pop",
  "}{",
  "  /setcustomcolor {",
  "    exch",
  "    [ exch /Separation exch dup 4 get exch /DeviceCMYK exch",
  "      0 4 getinterval cvx",
  "      [ exch /dup load exch { mul exch dup } /forall load",
  "        /pop load dup ] cvx",
  "    ] setcolorspace setcolor",
  "  } def",
  "} ifelse",
  "/customcolorimage where {",
  "  pop",
  "}{",
  "  /customcolorimage {",
  "    gsave",
  "    [ exch /Separation exch dup 4 get exch /DeviceCMYK exch",
  "      0 4 getinterval cvx",
  "      [ exch /dup load exch { mul exch dup } /forall load",
  "        /pop load dup ] cvx",
  "    ] setcolorspace",
  "    10 dict begin",
  "      /ImageType 1 def",
  "      /DataSource exch def",
  "      /ImageMatrix exch def",
  "      /BitsPerComponent exch def",
  "      /Height exch def",
  "      /Width exch def",
  "      /Decode [1 0] def",
  "    currentdict end",
  "    image",
  "    grestore",
  "  } def",
  "} ifelse",
  "% PDF color state",
  "/sCol {",
  "  pdfLastStroke not {",
  "    pdfStroke aload length",
  "    dup 1 eq {",
  "      pop setgray",
  "    }{",
  "      dup 3 eq {",
  "        pop setrgbcolor",
  "      }{",
  "        4 eq {",
  "          setcmykcolor",
  "        }{",
  "          findcmykcustomcolor exch setcustomcolor",
  "        } ifelse",
  "      } ifelse",
  "    } ifelse",
  "    /pdfLastStroke true def /pdfLastFill false def",
  "  } if",
  "} def",
  "/fCol {",
  "  pdfLastFill not {",
  "    pdfFill aload length",
  "    dup 1 eq {",
  "      pop setgray",
  "    }{",
  "      dup 3 eq {",
  "        pop setrgbcolor",
  "      }{",
  "        4 eq {",
  "          setcmykcolor",
  "        }{",
  "          findcmykcustomcolor exch setcustomcolor",
  "        } ifelse",
  "      } ifelse",
  "    } ifelse",
  "    /pdfLastFill true def /pdfLastStroke false def",
  "  } if",
  "} def",
  "% build a font",
  "/pdfMakeFont {",
  "  4 3 roll findfont",
  "  4 2 roll matrix scale makefont",
  "  dup length dict begin",
  "    { 1 index /FID ne { def } { pop pop } ifelse } forall",
  "    /Encoding exch def",
  "    currentdict",
  "  end",
  "  definefont pop",
  "} def",
  "/pdfMakeFont16 {",
  "  exch findfont",
  "  dup length dict begin",
  "    { 1 index /FID ne { def } { pop pop } ifelse } forall",
  "    /WMode exch def",
  "    currentdict",
  "  end",
  "  definefont pop",
  "} def",
  "/pdfMakeFont16L3 {",
  "  1 index /CIDFont resourcestatus {",
  "    pop pop 1 index /CIDFont findresource /CIDFontType known",
  "  } {",
  "    false",
  "  } ifelse",
  "  {",
  "    0 eq { /Identity-H } { /Identity-V } ifelse",
  "    exch 1 array astore composefont pop",
  "  } {",
  "    pdfMakeFont16",
  "  } ifelse",
  "} def",
  "% graphics state operators",
  "/q { gsave pdfDictSize dict begin } def",
  "/Q { end grestore } def",
  "/cm { concat } def",
  "/d { setdash } def",
  "/i { setflat } def",
  "/j { setlinejoin } def",
  "/J { setlinecap } def",
  "/M { setmiterlimit } def",
  "/w { setlinewidth } def",
  "% color operators",
  "/g { dup 1 array astore /pdfFill exch def setgray",
  "     /pdfLastFill true def /pdfLastStroke false def } def",
  "/G { dup 1 array astore /pdfStroke exch def setgray",
  "     /pdfLastStroke true def /pdfLastFill false def } def",
  "/rg { 3 copy 3 array astore /pdfFill exch def setrgbcolor",
  "      /pdfLastFill true def /pdfLastStroke false def } def",
  "/RG { 3 copy 3 array astore /pdfStroke exch def setrgbcolor",
  "      /pdfLastStroke true def /pdfLastFill false def } def",
  "/k { 4 copy 4 array astore /pdfFill exch def setcmykcolor",
  "     /pdfLastFill true def /pdfLastStroke false def } def",
  "/K { 4 copy 4 array astore /pdfStroke exch def setcmykcolor",
  "     /pdfLastStroke true def /pdfLastFill false def } def",
  "/ck { 6 copy 6 array astore /pdfFill exch def",
  "      findcmykcustomcolor exch setcustomcolor",
  "      /pdfLastFill true def /pdfLastStroke false def } def",
  "/CK { 6 copy 6 array astore /pdfStroke exch def",
  "      findcmykcustomcolor exch setcustomcolor",
  "      /pdfLastStroke true def /pdfLastFill false def } def",
  "% path segment operators",
  "/m { moveto } def",
  "/l { lineto } def",
  "/c { curveto } def",
  "/re { 4 2 roll moveto 1 index 0 rlineto 0 exch rlineto",
  "      neg 0 rlineto closepath } def",
  "/h { closepath } def",
  "% path painting operators",
  "/S { sCol stroke } def",
  "/Sf { fCol stroke } def",
  "/f { fCol fill } def",
  "/f* { fCol eofill } def",
  "% clipping operators",
  "/W { clip newpath } def",
  "/W* { eoclip newpath } def",
  "% text state operators",
  "/Tc { /pdfCharSpacing exch def } def",
  "/Tf { dup /pdfFontSize exch def",
  "      dup pdfHorizScaling mul exch matrix scale",
  "      pdfTextMat matrix concatmatrix dup 4 0 put dup 5 0 put",
  "      exch findfont exch makefont setfont } def",
  "/Tr { /pdfTextRender exch def } def",
  "/Ts { /pdfTextRise exch def } def",
  "/Tw { /pdfWordSpacing exch def } def",
  "/Tz { /pdfHorizScaling exch def } def",
  "% text positioning operators",
  "/Td { pdfTextMat transform moveto } def",
  "/Tm { /pdfTextMat exch def } def",
  "% text string operators",
  "/awcp { % awidthcharpath",
  "  exch {",
  "    1 string dup 0 3 index put 2 index charpath",
  "    3 index 3 index rmoveto",
  "    4 index eq { 5 index 5 index rmoveto } if",
  "  } forall",
  "  6 {pop} repeat",
  "} def",
  "/Tj { fCol",  // because stringwidth has to draw Type 3 chars
  "      0 pdfTextRise pdfTextMat dtransform rmoveto",
  "      1 index stringwidth pdfTextMat idtransform pop",
  "      sub 1 index length dup 0 ne { div } { pop pop 0 } ifelse",
  "      pdfWordSpacing pdfHorizScaling mul 0 pdfTextMat dtransform 32",
  "      4 3 roll pdfCharSpacing pdfHorizScaling mul add 0",
  "      pdfTextMat dtransform",
  "      6 5 roll",
  "      currentpoint 8 2 roll",
  "      pdfTextRender 1 and 0 eq {",
  "        6 copy awidthshow",
  "      } if",
  "      pdfTextRender 3 and dup 1 eq exch 2 eq or {",
  "        8 6 roll moveto",
  "        currentfont /FontType get 3 eq { fCol } { sCol } ifelse",
  "        false awcp currentpoint stroke moveto",
  "      } {",
  "        8 {pop} repeat",
  "      } ifelse",
  "      0 pdfTextRise neg pdfTextMat dtransform rmoveto } def",
  "/Tj16 { pdfTextRender 1 and 0 eq { fCol } { sCol } ifelse",
  "        0 pdfTextRise pdfTextMat dtransform rmoveto",
  "        2 index stringwidth pdfTextMat idtransform pop",
  "        sub exch div",
  "        pdfWordSpacing pdfHorizScaling mul 0 pdfTextMat dtransform 32",
  "        4 3 roll pdfCharSpacing pdfHorizScaling mul add 0",
  "        pdfTextMat dtransform",
  "        6 5 roll awidthshow",
  "        0 pdfTextRise neg pdfTextMat dtransform rmoveto } def",
  "/Tj16V { pdfTextRender 1 and 0 eq { fCol } { sCol } ifelse",
  "         0 pdfTextRise pdfTextMat dtransform rmoveto",
  "         2 index stringwidth pdfTextMat idtransform exch pop",
  "         sub exch div",
  "         0 pdfWordSpacing pdfTextMat dtransform 32",
  "         4 3 roll pdfCharSpacing add 0 exch",
  "         pdfTextMat dtransform",
  "         6 5 roll awidthshow",
  "         0 pdfTextRise neg pdfTextMat dtransform rmoveto } def",
  "/TJm { pdfFontSize 0.001 mul mul neg 0",
  "       pdfTextMat dtransform rmoveto } def",
  "/TJmV { pdfFontSize 0.001 mul mul neg 0 exch",
  "        pdfTextMat dtransform rmoveto } def",
  "% Level 1 image operators",
  "/pdfIm1 {",
  "  /pdfImBuf1 4 index string def",
  "  { currentfile pdfImBuf1 readhexstring pop } image",
  "} def",
  "/pdfIm1Sep {",
  "  /pdfImBuf1 4 index string def",
  "  /pdfImBuf2 4 index string def",
  "  /pdfImBuf3 4 index string def",
  "  /pdfImBuf4 4 index string def",
  "  { currentfile pdfImBuf1 readhexstring pop }",
  "  { currentfile pdfImBuf2 readhexstring pop }",
  "  { currentfile pdfImBuf3 readhexstring pop }",
  "  { currentfile pdfImBuf4 readhexstring pop }",
  "  true 4 colorimage",
  "} def",
  "/pdfImM1 {",
  "  /pdfImBuf1 4 index 7 add 8 idiv string def",
  "  { currentfile pdfImBuf1 readhexstring pop } imagemask",
  "} def",
  "% Level 2 image operators",
  "/pdfImBuf 100 string def",
  "/pdfIm {",
  "  image",
  "  { currentfile pdfImBuf readline",
  "    not { pop exit } if",
  "    (%-EOD-) eq { exit } if } loop",
  "} def",
  "/pdfImSep {",
  "  findcmykcustomcolor exch",
  "  dup /Width get /pdfImBuf1 exch string def",
  "  begin Width Height BitsPerComponent ImageMatrix DataSource end",
  "  /pdfImData exch def",
  "  { pdfImData pdfImBuf1 readstring pop",
  "    0 1 2 index length 1 sub {",
  "      1 index exch 2 copy get 255 exch sub put",
  "    } for }",
  "  6 5 roll customcolorimage",
  "  { currentfile pdfImBuf readline",
  "    not { pop exit } if",
  "    (%-EOD-) eq { exit } if } loop",
  "} def",
  "/pdfImM {",
  "  fCol imagemask",
  "  { currentfile pdfImBuf readline",
  "    not { pop exit } if",
  "    (%-EOD-) eq { exit } if } loop",
  "} def",
  "end",
  NULL
};

static char *cmapProlog[] = {
  "/CIDInit /ProcSet findresource begin",
  "10 dict begin",
  "  begincmap",
  "  /CMapType 1 def",
  "  /CMapName /Identity-H def",
  "  /CIDSystemInfo 3 dict dup begin",
  "    /Registry (Adobe) def",
  "    /Ordering (Identity) def",
  "    /Supplement 0 def",
  "  end def",
  "  1 begincodespacerange",
  "    <0000> <ffff>",
  "  endcodespacerange",
  "  0 usefont",
  "  1 begincidrange",
  "    <0000> <ffff> 0",
  "  endcidrange",
  "  endcmap",
  "  currentdict CMapName exch /CMap defineresource pop",
  "end",
  "10 dict begin",
  "  begincmap",
  "  /CMapType 1 def",
  "  /CMapName /Identity-V def",
  "  /CIDSystemInfo 3 dict dup begin",
  "    /Registry (Adobe) def",
  "    /Ordering (Identity) def",
  "    /Supplement 0 def",
  "  end def",
  "  /WMode 1 def",
  "  1 begincodespacerange",
  "    <0000> <ffff>",
  "  endcodespacerange",
  "  0 usefont",
  "  1 begincidrange",
  "    <0000> <ffff> 0",
  "  endcidrange",
  "  endcmap",
  "  currentdict CMapName exch /CMap defineresource pop",
  "end",
  "end",
  NULL
};

//------------------------------------------------------------------------
// Fonts
//------------------------------------------------------------------------

struct PSSubstFont {
  char *psName;			// PostScript name
  double mWidth;		// width of 'm' character
};

static char *psFonts[] = {
  "Courier",
  "Courier-Bold",
  "Courier-Oblique",
  "Courier-BoldOblique",
  "Helvetica",
  "Helvetica-Bold",
  "Helvetica-Oblique",
  "Helvetica-BoldOblique",
  "Symbol",
  "Times-Roman",
  "Times-Bold",
  "Times-Italic",
  "Times-BoldItalic",
  "ZapfDingbats",
  NULL
};

static PSSubstFont psSubstFonts[] = {
  {"Helvetica",             0.833},
  {"Helvetica-Oblique",     0.833},
  {"Helvetica-Bold",        0.889},
  {"Helvetica-BoldOblique", 0.889},
  {"Times-Roman",           0.788},
  {"Times-Italic",          0.722},
  {"Times-Bold",            0.833},
  {"Times-BoldItalic",      0.778},
  {"Courier",               0.600},
  {"Courier-Oblique",       0.600},
  {"Courier-Bold",          0.600},
  {"Courier-BoldOblique",   0.600}
};

// Encoding info for substitute 16-bit font
struct PSFont16Enc {
  Ref fontID;
  GString *enc;
};

//------------------------------------------------------------------------
// process colors
//------------------------------------------------------------------------

#define psProcessCyan     1
#define psProcessMagenta  2
#define psProcessYellow   4
#define psProcessBlack    8
#define psProcessCMYK    15

//------------------------------------------------------------------------
// PSOutCustomColor
//------------------------------------------------------------------------

class PSOutCustomColor {
public:

  PSOutCustomColor(double cA, double mA,
		   double yA, double kA, GString *nameA);
  ~PSOutCustomColor();

  double c, m, y, k;
  GString *name;
  PSOutCustomColor *next;
};

PSOutCustomColor::PSOutCustomColor(double cA, double mA,
				   double yA, double kA, GString *nameA) {
  c = cA;
  m = mA;
  y = yA;
  k = kA;
  name = nameA;
  next = NULL;
}

PSOutCustomColor::~PSOutCustomColor() {
  delete name;
}

//------------------------------------------------------------------------
// PSOutputDev
//------------------------------------------------------------------------