arospdf/xpdf/pdfimages.cc

   1 //========================================================================
   2 //
   3 // pdfimages.cc
   4 //
   5 // Copyright 1998-2003 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #include <aconf.h>
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <stddef.h>
  13 #include <string.h>
  14 #include "parseargs.h"
  15 #include "GString.h"
  16 #include "gmem.h"
  17 #include "GlobalParams.h"
  18 #include "Object.h"
  19 #include "Stream.h"
  20 #include "Array.h"
  21 #include "Dict.h"
  22 #include "XRef.h"
  23 #include "Catalog.h"
  24 #include "Page.h"
  25 #include "PDFDoc.h"
  26 #include "ImageOutputDev.h"
  27 #include "Error.h"
  28 #include "config.h"
  29
  30 static int firstPage = 1;
  31 static int lastPage = 0;
  32 static GBool dumpJPEG = gFalse;
  33 static char ownerPassword[33] = "\001";
  34 static char userPassword[33] = "\001";
  35 static GBool quiet = gFalse;
  36 static char cfgFileName[256] = "";
  37 static GBool printVersion = gFalse;
  38 static GBool printHelp = gFalse;
  39
  40 static ArgDesc argDesc[] = {
  41   {"-f",      argInt,      &firstPage,     0,
  42    "first page to convert"},
  43   {"-l",      argInt,      &lastPage,      0,
  44    "last page to convert"},
  45   {"-j",      argFlag,     &dumpJPEG,      0,
  46    "write JPEG images as JPEG files"},
  47   {"-opw",    argString,   ownerPassword,  sizeof(ownerPassword),
  48    "owner password (for encrypted files)"},
  49   {"-upw",    argString,   userPassword,   sizeof(userPassword),
  50    "user password (for encrypted files)"},
  51   {"-q",      argFlag,     &quiet,         0,
  52    "don't print any messages or errors"},
  53   {"-cfg",        argString,      cfgFileName,    sizeof(cfgFileName),
  54    "configuration file to use in place of .xpdfrc"},
  55   {"-v",      argFlag,     &printVersion,  0,
  56    "print copyright and version info"},
  57   {"-h",      argFlag,     &printHelp,     0,
  58    "print usage information"},
  59   {"-help",   argFlag,     &printHelp,     0,
  60    "print usage information"},
  61   {"--help",  argFlag,     &printHelp,     0,
  62    "print usage information"},
  63   {"-?",      argFlag,     &printHelp,     0,
  64    "print usage information"},
  65   {NULL}
  66 };
  67
  68 int main(int argc, char *argv[]) {
  69   PDFDoc *doc;
  70   GString *fileName;
  71   char *imgRoot;
  72   GString *ownerPW, *userPW;
  73   ImageOutputDev *imgOut;
  74   GBool ok;
  75   int exitCode;
  76
  77   exitCode = 99;
  78
  79   // parse args
  80   ok = parseArgs(argDesc, &argc, argv);
  81   if (!ok || argc != 3 || printVersion || printHelp) {
  82     fprintf(stderr, "pdfimages version %s\n", xpdfVersion);
  83     fprintf(stderr, "%s\n", xpdfCopyright);
  84     if (!printVersion) {
  85       printUsage("pdfimages", "<PDF-file> <image-root>", argDesc);
  86     }
  87     goto err0;
  88   }
  89   fileName = new GString(argv[1]);
  90   imgRoot = argv[2];
  91
  92   // read config file
  93   globalParams = new GlobalParams(cfgFileName);
  94   if (quiet) {
  95     globalParams->setErrQuiet(quiet);
  96   }
  97
  98   // open PDF file
  99   if (ownerPassword[0] != '\001') {
 100     ownerPW = new GString(ownerPassword);
 101   } else {
 102     ownerPW = NULL;
 103   }
 104   if (userPassword[0] != '\001') {
 105     userPW = new GString(userPassword);
 106   } else {
 107     userPW = NULL;
 108   }
 109   doc = new PDFDoc(fileName, ownerPW, userPW);
 110   if (userPW) {
 111     delete userPW;
 112   }
 113   if (ownerPW) {
 114     delete ownerPW;
 115   }
 116   if (!doc->isOk()) {
 117     exitCode = 1;
 118     goto err1;
 119   }
 120
 121   // check for copy permission
 122   if (!doc->okToCopy()) {
 123     error(-1, "Copying of images from this document is not allowed.");
 124     exitCode = 3;
 125     goto err1;
 126   }
 127
 128   // get page range
 129   if (firstPage < 1)
 130     firstPage = 1;
 131   if (lastPage < 1 || lastPage > doc->getNumPages())
 132     lastPage = doc->getNumPages();
 133
 134   // write image files
 135   imgOut = new ImageOutputDev(imgRoot, dumpJPEG);
 136   if (imgOut->isOk()) {
 137     doc->displayPages(imgOut, firstPage, lastPage, 72, 72, 0,
 138                       gFalse, gTrue, gFalse);
 139   }
 140   delete imgOut;
 141
 142   exitCode = 0;
 143
 144   // clean up
 145  err1:
 146   delete doc;
 147   delete globalParams;
 148  err0:
 149
 150   // check for memory leaks
 151   xObject::memCheck(stderr);
 152   gMemReport(stderr);
 153
 154   return exitCode;
 155 }