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//========================================================================
//
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// pdftocairo.cc
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//
// Copyright 2003 Glyph & Cog, LLC
//
//========================================================================

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2007 Ilmari Heikkinen <ilmari.heikkinen@gmail.com>
// Copyright (C) 2008 Richard Airlie <richard.airlie@maglabs.net>
// Copyright (C) 2009 Michael K. Johnson <a1237@danlj.org>
// Copyright (C) 2009 Shen Liang <shenzhuxi@gmail.com>
// Copyright (C) 2009 Stefan Thomas <thomas@eload24.com>
// Copyright (C) 2009, 2010 Albert Astals Cid <aacid@kde.org>
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// Copyright (C) 2010, 2011-2017 Adrian Johnson <ajohnson@redneon.com>
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// Copyright (C) 2010, 2014 Hib Eris <hib@hiberis.nl>
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// Copyright (C) 2010 Jonathan Liu <net147@gmail.com>
// Copyright (C) 2010 William Bader <williambader@hotmail.com>
// Copyright (C) 2011 Thomas Freitag <Thomas.Freitag@alfa.de>
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// Copyright (C) 2011, 2015 Carlos Garcia Campos <carlosgc@gnome.org>
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// Copyright (C) 2012 Koji Otani <sho@bbr.jp>
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// Copyright (C) 2013 Lu Wang <coolwanglu@gmail.com>
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// Copyright (C) 2013 Suzuki Toshiya <mpsuzuki@hiroshima-u.ac.jp>
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// Copyright (C) 2014 Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
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// Copyright (C) 2016 Jason Crain <jason@aquaticape.us>
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//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================

#include "config.h"
#include <poppler-config.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include "parseargs.h"
#include "goo/gmem.h"
#include "goo/gtypes.h"
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#include "goo/gtypes_p.h"
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#include "goo/GooString.h"
#include "goo/ImgWriter.h"
#include "goo/JpegWriter.h"
#include "goo/PNGWriter.h"
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#include "goo/TiffWriter.h"
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#include "GlobalParams.h"
#include "Object.h"
#include "PDFDoc.h"
#include "PDFDocFactory.h"
#include "CairoOutputDev.h"
#if USE_CMS
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#ifdef USE_LCMS1
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#include <lcms.h>
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#else
#include <lcms2.h>
#endif
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#endif
#include <cairo.h>
#if CAIRO_HAS_PS_SURFACE
#include <cairo-ps.h>
#endif
#if CAIRO_HAS_PDF_SURFACE
#include <cairo-pdf.h>
#endif
#if CAIRO_HAS_SVG_SURFACE
#include <cairo-svg.h>
#endif

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#include "pdftocairo-win32.h"

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static GBool png = gFalse;
static GBool jpeg = gFalse;
static GBool ps = gFalse;
static GBool eps = gFalse;
static GBool pdf = gFalse;
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static GBool printToWin32 = gFalse;
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static GBool printdlg = gFalse;
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static GBool svg = gFalse;
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static GBool tiff = gFalse;
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static int firstPage = 1;
static int lastPage = 0;
static GBool printOnlyOdd = gFalse;
static GBool printOnlyEven = gFalse;
static GBool singleFile = gFalse;
static double resolution = 0.0;
static double x_resolution = 150.0;
static double y_resolution = 150.0;
static int scaleTo = 0;
static int x_scaleTo = 0;
static int y_scaleTo = 0;
static int crop_x = 0;
static int crop_y = 0;
static int crop_w = 0;
static int crop_h = 0;
static int sz = 0;
static GBool useCropBox = gFalse;
static GBool mono = gFalse;
static GBool gray = gFalse;
static GBool transp = gFalse;
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static GooString antialias;
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static GooString icc;
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static GBool level2 = gFalse;
static GBool level3 = gFalse;
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static GBool origPageSizes = gFalse;
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static char paperSize[15] = "";
static int paperWidth = -1;
static int paperHeight = -1;
static GBool noCrop = gFalse;
static GBool expand = gFalse;
static GBool noShrink = gFalse;
static GBool noCenter = gFalse;
static GBool duplex = gFalse;
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static char tiffCompressionStr[16] = "";
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static char ownerPassword[33] = "";
static char userPassword[33] = "";
static GBool quiet = gFalse;
static GBool printVersion = gFalse;
static GBool printHelp = gFalse;

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static GooString jpegOpt;
static int jpegQuality = -1;
static bool jpegProgressive = false;

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static GooString printer;
static GooString printOpt;
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#ifdef CAIRO_HAS_WIN32_SURFACE
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static GBool setupdlg = gFalse;
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#endif
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static const ArgDesc argDesc[] = {
#if ENABLE_LIBPNG
  {"-png",    argFlag,     &png,           0,
   "generate a PNG file"},
#endif
#if ENABLE_LIBJPEG
  {"-jpeg",   argFlag,     &jpeg,           0,
   "generate a JPEG file"},
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  {"-jpegopt",  argGooString, &jpegOpt,    0,
   "jpeg options, with format <opt1>=<val1>[,<optN>=<valN>]*"},
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#endif
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#if ENABLE_LIBTIFF
  {"-tiff",    argFlag,     &tiff,           0,
   "generate a TIFF file"},
  {"-tiffcompression", argString, tiffCompressionStr, sizeof(tiffCompressionStr),
   "set TIFF compression: none, packbits, jpeg, lzw, deflate"},
#endif
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#if CAIRO_HAS_PS_SURFACE
  {"-ps",     argFlag,     &ps,            0,
   "generate PostScript file"},
  {"-eps",        argFlag,     &eps,          0,
   "generate Encapsulated PostScript (EPS)"},
#endif
#if CAIRO_HAS_PDF_SURFACE
  {"-pdf",    argFlag,     &pdf,           0,
   "generate a PDF file"},
#endif
#if CAIRO_HAS_SVG_SURFACE
  {"-svg",    argFlag,     &svg,           0,
   "generate a Scalable Vector Graphics (SVG) file"},
#endif
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#ifdef CAIRO_HAS_WIN32_SURFACE
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  {"-print",    argFlag,     &printToWin32,       0,
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   "print to a Windows printer"},
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  {"-printdlg",    argFlag,     &printdlg, 0,
   "show Windows print dialog and print"},
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  {"-printer",  argGooString, &printer,    0,
   "printer name or use default if this option is not specified"},
  {"-printopt",  argGooString, &printOpt,    0,
   "printer options, with format <opt1>=<val1>[,<optN>=<valN>]*"},
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  {"-setupdlg",    argFlag,     &setupdlg,       0,
   "show printer setup dialog before printing"},
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#endif
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  {"-f",      argInt,      &firstPage,     0,
   "first page to print"},
  {"-l",      argInt,      &lastPage,      0,
   "last page to print"},
  {"-o",      argFlag,      &printOnlyOdd, 0,
   "print only odd pages"},
  {"-e",      argFlag,      &printOnlyEven, 0,
   "print only even pages"},
  {"-singlefile", argFlag,  &singleFile,   0,
   "write only the first page and do not add digits"},

  {"-r",      argFP,       &resolution,    0,
   "resolution, in PPI (default is 150)"},
  {"-rx",      argFP,       &x_resolution,    0,
   "X resolution, in PPI (default is 150)"},
  {"-ry",      argFP,       &y_resolution,    0,
   "Y resolution, in PPI (default is 150)"},
  {"-scale-to",      argInt,       &scaleTo,    0,
   "scales each page to fit within scale-to*scale-to pixel box"},
  {"-scale-to-x",      argInt,       &x_scaleTo,    0,
   "scales each page horizontally to fit in scale-to-x pixels"},
  {"-scale-to-y",      argInt,       &y_scaleTo,    0,
   "scales each page vertically to fit in scale-to-y pixels"},

  {"-x",      argInt,      &crop_x,             0,
   "x-coordinate of the crop area top left corner"},
  {"-y",      argInt,      &crop_y,             0,
   "y-coordinate of the crop area top left corner"},
  {"-W",      argInt,      &crop_w,             0,
   "width of crop area in pixels (default is 0)"},
  {"-H",      argInt,      &crop_h,             0,
   "height of crop area in pixels (default is 0)"},
  {"-sz",     argInt,      &sz,            0,
   "size of crop square in pixels (sets W and H)"},
  {"-cropbox",argFlag,     &useCropBox,    0,
   "use the crop box rather than media box"},

  {"-mono",   argFlag,     &mono,          0,
   "generate a monochrome image file (PNG, JPEG)"},
  {"-gray",   argFlag,     &gray,          0,
   "generate a grayscale image file (PNG, JPEG)"},
  {"-transp",   argFlag,     &transp,          0,
   "use a transparent background instead of white (PNG)"},
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  {"-antialias",   argGooString,     &antialias,          0,
   "set cairo antialias option"},
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#if USE_CMS
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  {"-icc",   argGooString,     &icc,          0,
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   "ICC color profile to use"},
#endif

  {"-level2",     argFlag,     &level2,         0,
   "generate Level 2 PostScript (PS, EPS)"},
  {"-level3",     argFlag,     &level3,         0,
   "generate Level 3 PostScript (PS, EPS)"},
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  {"-origpagesizes",argFlag,   &origPageSizes,0,
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   "conserve original page sizes (PS, PDF, SVG)"},
  {"-paper",      argString,   paperSize,       sizeof(paperSize),
   "paper size (letter, legal, A4, A3, match)"},
  {"-paperw",     argInt,      &paperWidth,     0,
   "paper width, in points"},
  {"-paperh",     argInt,      &paperHeight,    0,
   "paper height, in points"},
  {"-nocrop",     argFlag,     &noCrop,         0,
   "don't crop pages to CropBox"},
  {"-expand",     argFlag,     &expand,         0,
   "expand pages smaller than the paper size"},
  {"-noshrink",   argFlag,     &noShrink,       0,
   "don't shrink pages larger than the paper size"},
  {"-nocenter",   argFlag,     &noCenter,       0,
   "don't center pages smaller than the paper size"},
  {"-duplex",     argFlag,     &duplex,         0,
   "enable duplex printing"},

  {"-opw",    argString,   ownerPassword,  sizeof(ownerPassword),
   "owner password (for encrypted files)"},
  {"-upw",    argString,   userPassword,   sizeof(userPassword),
   "user password (for encrypted files)"},

  {"-q",      argFlag,     &quiet,         0,
   "don't print any messages or errors"},
  {"-v",      argFlag,     &printVersion,  0,
   "print copyright and version info"},
  {"-h",      argFlag,     &printHelp,     0,
   "print usage information"},
  {"-help",   argFlag,     &printHelp,     0,
   "print usage information"},
  {"--help",  argFlag,     &printHelp,     0,
   "print usage information"},
  {"-?",      argFlag,     &printHelp,     0,
   "print usage information"},
  {NULL}
};


static  cairo_surface_t *surface;
static  GBool printing;
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static  FILE *output_file;
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static GBool usePDFPageSize;
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static cairo_antialias_t antialiasEnum = CAIRO_ANTIALIAS_DEFAULT;
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#if USE_CMS
static unsigned char *icc_data;
static int icc_data_size;
static cmsHPROFILE profile;
#endif

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struct AntiliasOption
{
  const char *name;
  cairo_antialias_t value;
};

static const AntiliasOption antialiasOptions[] =
{
  { "default",  CAIRO_ANTIALIAS_DEFAULT },
  { "none",     CAIRO_ANTIALIAS_NONE },
  { "gray",     CAIRO_ANTIALIAS_GRAY },
  { "subpixel", CAIRO_ANTIALIAS_SUBPIXEL },
  { "fast",     CAIRO_ANTIALIAS_FAST },
  { "good",     CAIRO_ANTIALIAS_GOOD },
  { "best",     CAIRO_ANTIALIAS_BEST },
  { NULL,       CAIRO_ANTIALIAS_DEFAULT },
};

static GBool parseAntialiasOption(GooString *antialias, cairo_antialias_t *antialiasEnum)
{
  const AntiliasOption *option = antialiasOptions;
  while (option->name) {
    if (antialias->cmp(option->name) == 0) {
      *antialiasEnum = option->value;
      return gTrue;
    }
    option++;
  }

  fprintf(stderr, "Error: Invalid antialias option \"%s\"\n", antialias->getCString());
  fprintf(stderr, "Valid options are:\n");
  option = antialiasOptions;
  while (option->name) {
    fprintf(stderr, "  %s\n", option->name);
    option++;
  }
  return gFalse;
}

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static GBool parseJpegOptions()
{
  //jpegOpt format is: <opt1>=<val1>,<opt2>=<val2>,...
  const char *nextOpt = jpegOpt.getCString();
  while (nextOpt && *nextOpt)
  {
    const char *comma = strchr(nextOpt, ',');
    GooString opt;
    if (comma) {
      opt.Set(nextOpt, comma - nextOpt);
      nextOpt = comma + 1;
    } else {
      opt.Set(nextOpt);
      nextOpt = NULL;
    }
    //here opt is "<optN>=<valN> "
    const char *equal = strchr(opt.getCString(), '=');
    if (!equal) {
      fprintf(stderr, "Unknown jpeg option \"%s\"\n", opt.getCString());
      return gFalse;
    }
    int iequal = equal - opt.getCString();
    GooString value(&opt, iequal + 1, opt.getLength() - iequal - 1);
    opt.del(iequal, opt.getLength() - iequal);
    //here opt is "<optN>" and value is "<valN>"

    if (opt.cmp("quality") == 0) {
      if (!isInt(value.getCString())) {
	fprintf(stderr, "Invalid jpeg quality\n");
	return gFalse;
      }
      jpegQuality = atoi(value.getCString());
      if (jpegQuality < 0 || jpegQuality > 100) {
	fprintf(stderr, "jpeg quality must be between 0 and 100\n");
	return gFalse;
      }
    } else if (opt.cmp("progressive") == 0) {
      jpegProgressive = gFalse;
      if (value.cmp("y") == 0) {
	jpegProgressive = gTrue;
      } else if (value.cmp("n") != 0) {
	fprintf(stderr, "jpeg progressive option must be \"y\" or \"n\"\n");
	return gFalse;
      }
    } else {
      fprintf(stderr, "Unknown jpeg option \"%s\"\n", opt.getCString());
      return gFalse;
    }
  }
  return gTrue;
}

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static void writePageImage(GooString *filename)
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{
  ImgWriter *writer = 0;
  FILE *file;
  int height, width, stride;
  unsigned char *data;

  if (png) {
#if ENABLE_LIBPNG
    if (transp)
      writer = new PNGWriter(PNGWriter::RGBA);
    else if (gray)
      writer = new PNGWriter(PNGWriter::GRAY);
    else if (mono)
      writer = new PNGWriter(PNGWriter::MONOCHROME);
    else
      writer = new PNGWriter(PNGWriter::RGB);

#if USE_CMS
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#ifdef USE_LCMS1
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    if (icc_data)
      static_cast<PNGWriter*>(writer)->setICCProfile(cmsTakeProductName(profile), icc_data, icc_data_size);
    else
      static_cast<PNGWriter*>(writer)->setSRGBProfile();
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#else
    if (icc_data) {
      cmsUInt8Number profileID[17];
      profileID[16] = '\0';

      cmsGetHeaderProfileID(profile,profileID);
      static_cast<PNGWriter*>(writer)->setICCProfile(reinterpret_cast<char *>(profileID), icc_data, icc_data_size);
    } else {
      static_cast<PNGWriter*>(writer)->setSRGBProfile();
    }
#endif
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#endif
#endif

  } else if (jpeg) {
#if ENABLE_LIBJPEG
    if (gray)
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      writer = new JpegWriter(JpegWriter::GRAY);
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    else
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      writer = new JpegWriter(JpegWriter::RGB);
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    static_cast<JpegWriter*>(writer)->setProgressive(jpegProgressive);
    if (jpegQuality >= 0)
      static_cast<JpegWriter*>(writer)->setQuality(jpegQuality);
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#endif
  } else if (tiff) {
#if ENABLE_LIBTIFF
    if (transp)
      writer = new TiffWriter(TiffWriter::RGBA_PREMULTIPLIED);
    else if (gray)
      writer = new TiffWriter(TiffWriter::GRAY);
    else if (mono)
      writer = new TiffWriter(TiffWriter::MONOCHROME);
    else
      writer = new TiffWriter(TiffWriter::RGB);
    static_cast<TiffWriter*>(writer)->setCompressionString(tiffCompressionStr);
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#endif
  }
  if (!writer)
    return;

  if (filename->cmp("fd://0") == 0)
    file = stdout;
  else
    file = fopen(filename->getCString(), "wb");

  if (!file) {
    fprintf(stderr, "Error opening output file %s\n", filename->getCString());
    exit(2);
  }

  height = cairo_image_surface_get_height(surface);
  width = cairo_image_surface_get_width(surface);
  stride = cairo_image_surface_get_stride(surface);
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  cairo_surface_flush(surface);
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  data = cairo_image_surface_get_data(surface);

  if (!writer->init(file, width, height, x_resolution, y_resolution)) {
    fprintf(stderr, "Error writing %s\n", filename->getCString());
    exit(2);
  }
  unsigned char *row = (unsigned char *) gmallocn(width, 4);

  for (int y = 0; y < height; y++ ) {
    uint32_t *pixel = (uint32_t *) (data + y*stride);
    unsigned char *rowp = row;
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    int bit = 7;
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    for (int x = 0; x < width; x++, pixel++) {
      if (transp) {
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        if (tiff) {
          // RGBA premultipled format
          *rowp++ = (*pixel &   0xff0000) >> 16;
          *rowp++ = (*pixel &   0x00ff00) >>  8;
          *rowp++ = (*pixel &   0x0000ff) >>  0;
          *rowp++ = (*pixel & 0xff000000) >> 24;
        } else {
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	// unpremultiply into RGBA format
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          uint8_t a;
          a = (*pixel & 0xff000000) >> 24;
          if (a == 0) {
            *rowp++ = 0;
            *rowp++ = 0;
            *rowp++ = 0;
          } else {
            *rowp++ = (((*pixel & 0xff0000) >> 16) * 255 + a / 2) / a;
            *rowp++ = (((*pixel & 0x00ff00) >>  8) * 255 + a / 2) / a;
            *rowp++ = (((*pixel & 0x0000ff) >>  0) * 255 + a / 2) / a;
          }
          *rowp++ = a;
        }
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      } else if (gray || mono) {
	// convert to gray
        // The PDF Reference specifies the DeviceRGB to DeviceGray conversion as
	// gray = 0.3*red + 0.59*green + 0.11*blue
	int r = (*pixel & 0x00ff0000) >> 16;
	int g = (*pixel & 0x0000ff00) >>  8;
	int b = (*pixel & 0x000000ff) >>  0;
	// an arbitrary integer approximation of .3*r + .59*g + .11*b
	int y = (r*19661+g*38666+b*7209 + 32829)>>16;
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        if (mono) {
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          if (bit == 7)
            *rowp = 0;
          if (y > 127)
            *rowp |= (1 << bit);
          bit--;
          if (bit < 0) {
            bit = 7;
            rowp++;
          }
        } else {
          *rowp++ = y;
        }
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      } else {
	// copy into RGB format
	*rowp++ = (*pixel & 0x00ff0000) >> 16;
	*rowp++ = (*pixel & 0x0000ff00) >>  8;
	*rowp++ = (*pixel & 0x000000ff) >>  0;
      }
    }
    writer->writeRow(&row);
  }
  gfree(row);
  writer->close();
  delete writer;
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  if (file == stdout) fflush(file);
  else fclose(file);
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}

static void getCropSize(double page_w, double page_h, double *width, double *height)
{
  int w = crop_w;
  int h = crop_h;

  if (w == 0)
    w = (int)ceil(page_w);

  if (h == 0)
    h = (int)ceil(page_h);

  *width =  (crop_x + w > page_w ? (int)ceil(page_w - crop_x) : w);
  *height = (crop_y + h > page_h ? (int)ceil(page_h - crop_y) : h);
}

static void getOutputSize(double page_w, double page_h, double *width, double *height)
{

  if (printing) {
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    if (usePDFPageSize) {
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      *width = page_w;
      *height = page_h;
    } else {
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      if (page_w > page_h) {
	*width = paperHeight;
	*height = paperWidth;
      } else {
	*width = paperWidth;
	*height = paperHeight;
      }
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    }
  } else {
    getCropSize(page_w * (x_resolution / 72.0),
		page_h * (y_resolution / 72.0),
		width, height);
  }
}

static void getFitToPageTransform(double page_w, double page_h,
				  double paper_w, double paper_h,
				  cairo_matrix_t *m)
{
  double x_scale, y_scale, scale;

  x_scale = paper_w / page_w;
  y_scale = paper_h / page_h;
  if (x_scale < y_scale)
    scale = x_scale;
  else
    scale = y_scale;

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  if (scale > 1.0 && !expand)
    scale = 1.0;
  if (scale < 1.0 && noShrink)
    scale = 1.0;

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  cairo_matrix_init_identity (m);
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  if (!noCenter) {
    // centre page
    cairo_matrix_translate (m, (paper_w - page_w*scale)/2, (paper_h - page_h*scale)/2);
  } else if (!svg) {
    // move to PostScript origin
    cairo_matrix_translate (m, 0, (paper_h - page_h*scale));
  }
  cairo_matrix_scale (m, scale, scale);
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}

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static cairo_status_t writeStream(void *closure, const unsigned char *data, unsigned int length)
{
  FILE *file = (FILE *)closure;

  if (fwrite(data, length, 1, file) == 1)
    return CAIRO_STATUS_SUCCESS;
  else
    return CAIRO_STATUS_WRITE_ERROR;
}

611
static void beginDocument(GooString *inputFileName, GooString *outputFileName, double w, double h)
612 613
{
  if (printing) {
614 615 616
    if (printToWin32) {
      output_file = NULL;
    } else {
617 618 619 620 621 622 623 624 625
      if (outputFileName->cmp("fd://0") == 0)
        output_file = stdout;
      else
      {
        output_file = fopen(outputFileName->getCString(), "wb");
        if (!output_file) {
          fprintf(stderr, "Error opening output file %s\n", outputFileName->getCString());
          exit(2);
        }
626 627
      }
    }
628

629 630
    if (ps || eps) {
#if CAIRO_HAS_PS_SURFACE
631
      surface = cairo_ps_surface_create_for_stream(writeStream, output_file, w, h);
632 633 634 635 636 637 638 639 640 641 642 643 644
      if (level2)
	cairo_ps_surface_restrict_to_level (surface, CAIRO_PS_LEVEL_2);
      if (eps)
	cairo_ps_surface_set_eps (surface, 1);
      if (duplex) {
	cairo_ps_surface_dsc_comment(surface, "%%Requirements: duplex");
	cairo_ps_surface_dsc_begin_setup(surface);
	cairo_ps_surface_dsc_comment(surface, "%%IncludeFeature: *Duplex DuplexNoTumble");
      }
      cairo_ps_surface_dsc_begin_page_setup (surface);
#endif
    } else if (pdf) {
#if CAIRO_HAS_PDF_SURFACE
645
      surface = cairo_pdf_surface_create_for_stream(writeStream, output_file, w, h);
646 647 648
#endif
    } else if (svg) {
#if CAIRO_HAS_SVG_SURFACE
649
      surface = cairo_svg_surface_create_for_stream(writeStream, output_file, w, h);
650 651 652
      cairo_svg_surface_restrict_to_version (surface, CAIRO_SVG_VERSION_1_2);
#endif
    }
653
#ifdef CAIRO_HAS_WIN32_SURFACE
654
    if (printToWin32)
655
      surface = win32BeginDocument(inputFileName, outputFileName);
656
#endif
657 658 659
  }
}

660
static void beginPage(double *w, double *h)
661 662 663 664
{
  if (printing) {
    if (ps || eps) {
#if CAIRO_HAS_PS_SURFACE
665
      if (*w > *h) {
666
	cairo_ps_surface_dsc_comment (surface, "%%PageOrientation: Landscape");
667
	cairo_ps_surface_set_size (surface, *h, *w);
668 669
      } else {
	cairo_ps_surface_dsc_comment (surface, "%%PageOrientation: Portrait");
670
	cairo_ps_surface_set_size (surface, *w, *h);
671 672 673 674 675 676
      }
#endif
    }

#if CAIRO_HAS_PDF_SURFACE
    if (pdf)
677
      cairo_pdf_surface_set_size (surface, *w, *h);
678
#endif
679

680
#ifdef CAIRO_HAS_WIN32_SURFACE
681 682 683 684 685 686
    if (printToWin32) {
      GBool changePageSize = gTrue;
      if (setupdlg && !origPageSizes)
	changePageSize = gFalse;
      win32BeginPage(w, h, changePageSize, noShrink); // w,h will be changed to actual size used
    }
687
#endif
688 689 690 691

    cairo_surface_set_fallback_resolution (surface, x_resolution, y_resolution);

  } else {
692
    surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, ceil(*w), ceil(*h));
693 694 695 696 697 698 699 700 701 702 703 704
  }
}

static void renderPage(PDFDoc *doc, CairoOutputDev *cairoOut, int pg,
		       double page_w, double page_h,
		       double output_w, double output_h)
{
  cairo_t *cr;
  cairo_status_t status;
  cairo_matrix_t m;

  cr = cairo_create(surface);
705

706 707
  cairoOut->setCairo(cr);
  cairoOut->setPrinting(printing);
708
  cairoOut->setAntialias(antialiasEnum);
709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738

  cairo_save(cr);
  if (ps && output_w > output_h) {
    // rotate 90 deg for landscape
    cairo_translate (cr, 0, output_w);
    cairo_matrix_init (&m, 0, -1, 1, 0, 0, 0);
    cairo_transform (cr, &m);
  }
  cairo_translate (cr, -crop_x, -crop_y);
  if (printing) {
    double cropped_w, cropped_h;
    getCropSize(page_w, page_h, &cropped_w, &cropped_h);
    getFitToPageTransform(cropped_w, cropped_h, output_w, output_h, &m);
    cairo_transform (cr, &m);
    cairo_rectangle(cr, crop_x, crop_y, cropped_w, cropped_h);
    cairo_clip(cr);
  } else {
    cairo_scale (cr, x_resolution/72.0, y_resolution/72.0);
  }
  doc->displayPageSlice(cairoOut,
			pg,
			72.0, 72.0,
			0, /* rotate */
			!useCropBox, /* useMediaBox */
			gFalse, /* Crop */
			printing,
			-1, -1, -1, -1);
  cairo_restore(cr);
  cairoOut->setCairo(NULL);

739
  // Blend onto white page
740
  if (!printing && !transp) {
741 742 743 744 745
    cairo_save(cr);
    cairo_set_operator(cr, CAIRO_OPERATOR_DEST_OVER);
    cairo_set_source_rgb(cr, 1, 1, 1);
    cairo_paint(cr);
    cairo_restore(cr);
746 747 748 749
  }

  status = cairo_status(cr);
  if (status)
750
    fprintf(stderr, "cairo error: %s\n", cairo_status_to_string(status));
751 752 753 754 755 756 757 758 759
  cairo_destroy (cr);
}

static void endPage(GooString *imageFileName)
{
  cairo_status_t status;

  if (printing) {
    cairo_surface_show_page(surface);
760

761
#ifdef CAIRO_HAS_WIN32_SURFACE
762
    if (printToWin32)
763
      win32EndPage(imageFileName);
764
#endif
765

766 767 768 769 770
  } else {
    writePageImage(imageFileName);
    cairo_surface_finish(surface);
    status = cairo_surface_status(surface);
    if (status)
771
      fprintf(stderr, "cairo error: %s\n", cairo_status_to_string(status));
772 773 774 775 776 777 778 779 780 781 782 783 784
    cairo_surface_destroy(surface);
  }

}

static void endDocument()
{
  cairo_status_t status;

  if (printing) {
    cairo_surface_finish(surface);
    status = cairo_surface_status(surface);
    if (status)
785
      fprintf(stderr, "cairo error: %s\n", cairo_status_to_string(status));
786
    cairo_surface_destroy(surface);
787 788 789 790
#ifdef CAIRO_HAS_WIN32_SURFACE
    if (printToWin32)
      win32EndDocument();
#endif
791 792
    if (output_file)
      fclose(output_file);
793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834
  }
}

static GBool setPSPaperSize(char *size, int &psPaperWidth, int &psPaperHeight) {
  if (!strcmp(size, "match")) {
    psPaperWidth = psPaperHeight = -1;
  } else if (!strcmp(size, "letter")) {
    psPaperWidth = 612;
    psPaperHeight = 792;
  } else if (!strcmp(size, "legal")) {
    psPaperWidth = 612;
    psPaperHeight = 1008;
  } else if (!strcmp(size, "A4")) {
    psPaperWidth = 595;
    psPaperHeight = 842;
  } else if (!strcmp(size, "A3")) {
    psPaperWidth = 842;
    psPaperHeight = 1190;
  } else {
    return gFalse;
  }
  return gTrue;
}

static int numberOfCharacters(unsigned int n)
{
  int charNum = 0;
  while (n >= 10)
  {
    n = n / 10;
    charNum++;
  }
  charNum++;
  return charNum;
}

static GooString *getImageFileName(GooString *outputFileName, int numDigits, int page)
{
  char buf[10];
  GooString *imageName = new GooString(outputFileName);
  if (!singleFile) {
    snprintf(buf, sizeof(buf), "-%0*d", numDigits, page);
835
    imageName->append(buf);
836
  }
837 838 839 840 841 842 843 844
  if (outputFileName->cmp("fd://0") != 0) {
    if (png)
      imageName->append(".png");
    else if (jpeg)
      imageName->append(".jpg");
    else if (tiff)
      imageName->append(".tif");
  }
845 846 847 848 849 850 851 852 853 854 855 856 857 858

  return imageName;
}

// If (printing || singleFile) the output file name includes the
// extension. Otherwise it is the file name base.
static GooString *getOutputFileName(GooString *fileName, GooString *outputName)
{
  GooString *name;
  char *s;
  char *p;

  if (outputName) {
    if (outputName->cmp("-") == 0) {
859
      if (printToWin32 || (!printing && !singleFile)) {
860 861 862 863 864 865 866 867
	fprintf(stderr, "Error: stdout may only be used with the ps, eps, pdf, svg output options or if -singlefile is used.\n");
	exit(99);
      }
      return new GooString("fd://0");
    }
    return new GooString(outputName);
  }

868
  if (printToWin32)
869
    return NULL; // No output file means print to printer
870

871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916
  if (fileName->cmp("fd://0") == 0) {
    fprintf(stderr, "Error: an output filename or '-' must be supplied when the PDF file is stdin.\n");
    exit(99);
  }

  // be careful not to overwrite the input file when the output format is PDF
  if (pdf && fileName->cmpN("http://", 7) != 0 && fileName->cmpN("https://", 8) != 0) {
    fprintf(stderr, "Error: an output filename or '-' must be supplied when the output format is PDF and input PDF file is a local file.\n");
    exit(99);
  }

  // strip everything up to last '/'
  s = fileName->getCString();
  p = strrchr(s, '/');
  if (p) {
    p++;
    if (*p == 0) {
      fprintf(stderr, "Error: invalid output filename.\n");
      exit(99);
    }
    name = new GooString(p);
  } else {
    name = new GooString(s);
  }

  // remove .pdf extension
  p = strrchr(name->getCString(), '.');
  if (p && strcasecmp(p, ".pdf") == 0) {
    GooString *name2 = new GooString(name->getCString(), name->getLength() - 4);
    delete name;
    name = name2;
  }

  // append new extension
  if (ps)
    name->append(".ps");
  else if (eps)
    name->append(".eps");
  else if (pdf)
    name->append(".pdf");
  else if (svg)
    name->append(".svg");

  return name;
}

917
static void checkInvalidPrintOption(GBool option, const char *option_name)
918 919
{
  if (option) {
920
    fprintf(stderr, "Error: %s may only be used with the -png, -jpeg, or -tiff output options.\n", option_name);
921 922 923 924
    exit(99);
  }
}

925
static void checkInvalidImageOption(GBool option, const char *option_name)
926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945
{
  if (option) {
    fprintf(stderr, "Error: %s may only be used with the -ps, -eps, -pdf, or -svg output options.\n", option_name);
    exit(99);
  }
}

int main(int argc, char *argv[]) {
  PDFDoc *doc;
  GooString *fileName = NULL;
  GooString *outputName = NULL;
  GooString *outputFileName = NULL;
  GooString *imageFileName = NULL;
  GooString *ownerPW, *userPW;
  CairoOutputDev *cairoOut;
  int pg, pg_num_len;
  double pg_w, pg_h, tmp, output_w, output_h;
  int num_outputs;

  // parse args
946 947
  if (!parseArgs(argDesc, &argc, argv)) {
    printUsage("pdftocairo", 0, argDesc);
948
    exit(99);
949
  }
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971

  if ( resolution != 0.0 &&
       (x_resolution == 150.0 ||
        y_resolution == 150.0)) {
    x_resolution = resolution;
    y_resolution = resolution;
  }
  if (argc < 2 || argc > 3 || printVersion || printHelp) {
    fprintf(stderr, "pdftocairo version %s\n", PACKAGE_VERSION);
    fprintf(stderr, "%s\n", popplerCopyright);
    fprintf(stderr, "%s\n", xpdfCopyright);
    if (!printVersion) {
      printUsage("pdftocairo", "<PDF-file> [<output-file>]", argDesc);
    }
    if (printVersion || printHelp)
      exit(0);
    else
      exit(99);
  }

  num_outputs = (png ? 1 : 0) +
                (jpeg ? 1 : 0) +
972
                (tiff ? 1 : 0) +
973 974 975
                (ps ? 1 : 0) +
                (eps ? 1 : 0) +
                (pdf ? 1 : 0) +
976
                (printToWin32 ? 1 : 0) +
977
                (printdlg ? 1 : 0) +
978 979
                (svg ? 1 : 0);
  if (num_outputs == 0) {
980
    fprintf(stderr, "Error: one of the output format options (-png, -jpeg, -ps, -eps, -pdf, -print, -printdlg, -svg) must be used.\n");
981 982 983
    exit(99);
  }
  if (num_outputs > 1) {
984
    fprintf(stderr, "Error: use only one of the output format options (-png, -jpeg, -ps, -eps, -pdf, -printdlg, -print, -svg).\n");
985 986
    exit(99);
  }
987
  if (png || jpeg || tiff)
988 989 990 991 992 993 994 995
    printing = gFalse;
  else
    printing = gTrue;

  if (printing) {
    checkInvalidPrintOption(mono, "-mono");
    checkInvalidPrintOption(gray, "-gray");
    checkInvalidPrintOption(transp, "-transp");
996
    checkInvalidPrintOption(icc.getCString()[0], "-icc");
997
    checkInvalidPrintOption(singleFile, "-singlefile");
998
    checkInvalidPrintOption(useCropBox, "-cropbox");
999 1000 1001
    checkInvalidPrintOption(scaleTo != 0, "-scale-to");
    checkInvalidPrintOption(x_scaleTo != 0, "-scale-to-x");
    checkInvalidPrintOption(y_scaleTo != 0, "-scale-to-y");
1002 1003 1004
  } else {
    checkInvalidImageOption(level2, "-level2");
    checkInvalidImageOption(level3, "-level3");
1005
    checkInvalidImageOption(origPageSizes, "-origpagesizes");
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015
    checkInvalidImageOption(paperSize[0], "-paper");
    checkInvalidImageOption(paperWidth > 0, "-paperw");
    checkInvalidImageOption(paperHeight > 0, "-paperh");
    checkInvalidImageOption(noCrop, "-nocrop");
    checkInvalidImageOption(expand, "-expand");
    checkInvalidImageOption(noShrink, "-noshrink");
    checkInvalidImageOption(noCenter, "-nocenter");
    checkInvalidImageOption(duplex, "-duplex");
  }

1016 1017 1018
  if (printing)
    useCropBox = !noCrop;

1019
  if (icc.getCString()[0] && !png) {
1020 1021 1022 1023
    fprintf(stderr, "Error: -icc may only be used with png output.\n");
    exit(99);
  }

1024 1025 1026 1027 1028
  if (antialias.getLength() > 0) {
    if (!parseAntialiasOption(&antialias, &antialiasEnum))
      exit(99);
  }

1029 1030
  if (transp && !(png || tiff)) {
    fprintf(stderr, "Error: -transp may only be used with png or tiff output.\n");
1031 1032 1033 1034 1035 1036 1037 1038
    exit(99);
  }

  if (mono && gray) {
    fprintf(stderr, "Error: -mono and -gray may not be used together.\n");
    exit(99);
  }

1039 1040 1041 1042 1043
  if (mono && !(png || tiff)) {
    fprintf(stderr, "Error: -mono may only be used with png or tiff output.\n");
    exit(99);
  }

1044 1045 1046 1047 1048 1049 1050 1051 1052
  if (jpegOpt.getLength() > 0) {
    if (!jpeg) {
      fprintf(stderr, "Error: -jpegopt may only be used with jpeg output.\n");
      exit(99);
    }
    if (!parseJpegOptions())
      exit(99);
  }

1053 1054
  if (strlen(tiffCompressionStr) > 0 && !tiff) {
    fprintf(stderr, "Error: -tiffcompression may only be used with tiff output.\n");
1055 1056 1057 1058 1059 1060 1061 1062 1063 1064
    exit(99);
  }

  if (level2 && level3) {
    fprintf(stderr, "Error: use only one of the 'level' options.\n");
    exit(99);
  }
  if (!level2 && !level3)
    level3 = gTrue;

1065
  if (eps && (origPageSizes || paperSize[0] || paperWidth > 0 || paperHeight > 0)) {
1066 1067 1068 1069
    fprintf(stderr, "Error: page size options may not be used with eps output.\n");
    exit(99);
  }

1070 1071 1072 1073 1074
  if ((paperWidth > 0 && paperHeight <= 0) || (paperWidth <= 0 && paperHeight > 0)) {
    fprintf(stderr, "Error: both -paperw and -paperh must be specified.\n");
    exit(99);
  }

1075
  if (paperSize[0]) {
1076 1077 1078 1079
    if (origPageSizes) {
      fprintf(stderr, "Error: -origpagesizes and -paper may not be used together.\n");
      exit(99);
    }
1080 1081 1082 1083 1084
    if (!setPSPaperSize(paperSize, paperWidth, paperHeight)) {
      fprintf(stderr, "Invalid paper size\n");
      exit(99);
    }
  }
1085 1086 1087 1088
  if (origPageSizes || paperWidth < 0 || paperHeight < 0)
    usePDFPageSize = gTrue;
  else
    usePDFPageSize = gFalse;
1089

1090 1091 1092
  if (printdlg)
    printToWin32 = gTrue;

1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123
  globalParams = new GlobalParams();
  if (quiet) {
    globalParams->setErrQuiet(quiet);
  }

  // open PDF file
  if (ownerPassword[0]) {
    ownerPW = new GooString(ownerPassword);
  } else {
    ownerPW = NULL;
  }
  if (userPassword[0]) {
    userPW = new GooString(userPassword);
  } else {
    userPW = NULL;
  }

  fileName = new GooString(argv[1]);
  if (fileName->cmp("-") == 0) {
    delete fileName;
    fileName = new GooString("fd://0");
  }
  if (argc == 3)
    outputName = new GooString(argv[2]);
  else
    outputName = NULL;

  outputFileName = getOutputFileName(fileName, outputName);

#if USE_CMS
  icc_data = NULL;
1124 1125
  if (icc.getCString()[0]) {
    FILE *file = fopen(icc.getCString(), "rb");
1126
    if (!file) {
1127
      fprintf(stderr, "Error: unable to open icc profile %s\n", icc.getCString());
1128 1129 1130 1131 1132 1133 1134
      exit(4);
    }
    fseek (file, 0, SEEK_END);
    icc_data_size = ftell(file);
    fseek (file, 0, SEEK_SET);
    icc_data = (unsigned char*)gmalloc(icc_data_size);
    if (fread(icc_data, icc_data_size, 1, file) != 1) {
1135
      fprintf(stderr, "Error: unable to read icc profile %s\n", icc.getCString());
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171
      exit(4);
    }
    fclose(file);
    profile = cmsOpenProfileFromMem(icc_data, icc_data_size);
    if (!profile) {
      fprintf(stderr, "Error: lcms error opening profile\n");
      exit(4);
    }
  } else {
    profile = cmsCreate_sRGBProfile();
  }
  GfxColorSpace::setDisplayProfile(profile);
#endif

  doc = PDFDocFactory().createPDFDoc(*fileName, ownerPW, userPW);
  if (!doc->isOk()) {
    fprintf(stderr, "Error opening PDF file.\n");
    exit(1);
  }

#ifdef ENFORCE_PERMISSIONS
  // check for print permission
  if (printing && !doc->okToPrint()) {
    fprintf(stderr, "Printing this document is not allowed.\n");
    exit(3);
  }
#endif

  // get page range
  if (firstPage < 1)
    firstPage = 1;
  if (singleFile && lastPage < 1)
    lastPage = firstPage;
  if (lastPage < 1 || lastPage > doc->getNumPages())
    lastPage = doc->getNumPages();

1172 1173 1174 1175 1176 1177
  if (lastPage < firstPage) {
    fprintf(stderr,
            "Wrong page range given: the first page (%d) can not be after the last page (%d).\n",
            firstPage, lastPage);
    exit(99);
  }
1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191
  if (eps && firstPage != lastPage) {
    fprintf(stderr, "EPS files can only contain one page.\n");
    exit(99);
  }

  if (singleFile && firstPage < lastPage) {
    if (!quiet) {
      fprintf(stderr,
        "Warning: Single file will write only the first of the %d pages.\n",
        lastPage + 1 - firstPage);
    }
    lastPage = firstPage;
  }

1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209
#ifdef CAIRO_HAS_WIN32_SURFACE
    if (printdlg) {
      GBool allPages = gFalse;
      if (firstPage == 1 && lastPage == doc->getNumPages())
	allPages = gTrue;
      win32ShowPrintDialog(&expand, &noShrink, &noCenter,
			   &usePDFPageSize, &allPages,
			   &firstPage, &lastPage, doc->getNumPages());
      if (allPages) {
	firstPage = 1;
	lastPage = doc->getNumPages();
      }
    } else if (printToWin32) {
      win32SetupPrinter(&printer, &printOpt,
			duplex, setupdlg);
    }
#endif

1210 1211 1212 1213
  // Make sure firstPage is always used so that beginDocument() is called
  if ((printOnlyEven && firstPage % 2 == 0) || (printOnlyOdd && firstPage % 2 == 1))
    firstPage++;

1214
  cairoOut = new CairoOutputDev();
1215
  cairoOut->startDoc(doc);
1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236
  if (sz != 0)
    crop_w = crop_h = sz;
  pg_num_len = numberOfCharacters(doc->getNumPages());
  for (pg = firstPage; pg <= lastPage; ++pg) {
    if (printOnlyEven && pg % 2 == 0) continue;
    if (printOnlyOdd && pg % 2 == 1) continue;
    if (useCropBox) {
      pg_w = doc->getPageCropWidth(pg);
      pg_h = doc->getPageCropHeight(pg);
    } else {
      pg_w = doc->getPageMediaWidth(pg);
      pg_h = doc->getPageMediaHeight(pg);
    }

    if (printing && pg == firstPage) {
      if (paperWidth < 0 || paperHeight < 0) {
	paperWidth = (int)ceil(pg_w);
	paperHeight = (int)ceil(pg_h);
      }
    }

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    if ((doc->getPageRotate(pg) == 90) || (doc->getPageRotate(pg) == 270)) {
      tmp = pg_w;
      pg_w = pg_h;
      pg_h = tmp;
    }
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    if (scaleTo != 0) {
      resolution = (72.0 * scaleTo) / (pg_w > pg_h ? pg_w : pg_h);
      x_resolution = y_resolution = resolution;
    } else {
1246
      if (x_scaleTo > 0) {
1247
        x_resolution = (72.0 * x_scaleTo) / pg_w;
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        if (y_scaleTo == -1)
          y_resolution = x_resolution;
1250
      }
1251
      if (y_scaleTo > 0) {
1252
        y_resolution = (72.0 * y_scaleTo) / pg_h;
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        if (x_scaleTo == -1)
          x_resolution = y_resolution;
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      }
    }
    if (imageFileName) {
      delete imageFileName;
      imageFileName = NULL;
    }
    if (!printing)
      imageFileName = getImageFileName(outputFileName, pg_num_len, pg);
    getOutputSize(pg_w, pg_h, &output_w, &output_h);

    if (pg == firstPage)
1266
      beginDocument(fileName, outputFileName, output_w, output_h);
1267
    beginPage(&output_w, &output_h);
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    renderPage(doc, cairoOut, pg, pg_w, pg_h, output_w, output_h);
    endPage(imageFileName);
  }
  endDocument();

  // clean up
  delete cairoOut;
  delete doc;
  delete globalParams;
  if (fileName)
    delete fileName;
  if (outputName)
    delete outputName;
  if (outputFileName)
    delete outputFileName;
  if (imageFileName)
    delete imageFileName;
  if (ownerPW)
    delete ownerPW;
  if (userPW)
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    delete userPW;
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#if USE_CMS
  cmsCloseProfile(profile);
  if (icc_data)
    gfree(icc_data);
#endif

  // check for memory leaks
  Object::memCheck(stderr);
  gMemReport(stderr);

  return 0;
}