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/*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Config.h"
#include "Document.h"
#include "FlateDecode.h"
#include "Utils.h"
#include "Parser.h"
#include "Exception.h"
#include <fstream>
#include <iostream>
#include <iomanip>
#include "core/memcheck.h"
using namespace merge_lib;
const std::string firstObj("%PDF-1.4\n1 0 obj\n<<\n/Title ()/Creator ()/Producer (Qt 4.5.0 (C) 1992-2009 Nokia Corporation and/or its subsidiary(-ies))/CreationDate (D:20090424120829)\n>>\nendobj\n");
const std::string zeroStr("0000000000");
Document::Document(const char * fileName):
_root(0), _pages(), _documentName(fileName), _maxObjectNumber(0)
{
}
Document::~Document()
{
for(size_t i = 0; i < _allObjects.size(); ++i)
delete _allObjects[i];
_allObjects.clear();
std::map<unsigned int, Page *>::const_iterator it(_pages.begin());
for(;it != _pages.end();it++)
{
delete (*it).second;
}
_pages.clear();
}
Page * Document::getPage(unsigned int pageNumber)
{
if(!_pages.count(pageNumber))
{
return 0;
/* std::stringstream error;
error << "There is no page with "
<< pageNumber << " number in "
<< _documentName;
throw Exception(error);*/
}
return _pages[pageNumber];
}
void Document::saveAs(const char * newFileName)
{
//first two objects will be created by hand
unsigned int fromObjNumber = 2;
_root->recalculateObjectNumbers(fromObjNumber);
_root->retrieveMaxObjectNumber(_maxObjectNumber);
//sizes of all objects
//key - object number
//value - size of object
std :: map < unsigned int, std::pair<unsigned long long, unsigned int > > sizesAndGenerationNumbers;
std::ofstream out;
out.open(newFileName, std::ios::binary);
if(!out.is_open())
{
std::string error("Access denied on file ");
error.append(newFileName);
throw Exception(error);
}
out << firstObj.c_str();
_root->serialize( out, sizesAndGenerationNumbers);
std::map< unsigned int, std::pair<unsigned long long, unsigned int > >::iterator sizeIterator;
unsigned int numberOfObjects = 2;
for ( sizeIterator = sizesAndGenerationNumbers.begin() ; sizeIterator != sizesAndGenerationNumbers.end(); sizeIterator++ )
{
numberOfObjects++;
}
//create xref
out << "xref\n"
<< "0 " << numberOfObjects << "\n"
<< "0000000000 65535 f \n"
<< "0000000009 00000 n \n";
unsigned long long sizeInXref = firstObj.size();
for ( sizeIterator = sizesAndGenerationNumbers.begin() ; sizeIterator != sizesAndGenerationNumbers.end(); sizeIterator++ )
{
out << std::setfill('0')<<std::setw(10)<<sizeInXref << " " << std::setw(5) << (*sizeIterator).second.second << " n \n";
sizeInXref = sizeInXref + (*sizeIterator).second.first;
}
out << "trailer\n<<\n/Size " << numberOfObjects << "\n/Info 1 0 R\n"
<< "/Root " << _root->getObjectNumber() << " 0 R\n >>\nstartxref\n" << sizeInXref << "\n%%EOF";
}
Object * Document::getDocumentObject()
{
return _root;
}