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109 lines
3.1 KiB
109 lines
3.1 KiB
///////////////////////////////////////////////////////////
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// Document.cpp
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// Implementation of the Class Document
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// Created on: 19-?????????-2009 12:27:55
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///////////////////////////////////////////////////////////
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#include "Config.h"
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#include "Document.h"
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#include "FlateDecode.h"
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#include "Utils.h"
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#include "Parser.h"
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#include "Exception.h"
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#include <fstream>
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#include <iostream>
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#include <iomanip>
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using namespace merge_lib;
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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");
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const std::string zeroStr("0000000000");
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Document::Document(const char * fileName): _pages(), _maxObjectNumber(0),_root(0),_documentName(fileName)
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{
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}
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Document::~Document()
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{
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for(size_t i = 0; i < _allObjects.size(); ++i)
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delete _allObjects[i];
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_allObjects.clear();
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std::map<unsigned int, Page *>::const_iterator it(_pages.begin());
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for(;it != _pages.end();it++)
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{
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delete (*it).second;
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}
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_pages.clear();
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}
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Page * Document::getPage(unsigned int pageNumber)
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{
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if(!_pages.count(pageNumber))
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{
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return 0;
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/* std::stringstream error;
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error << "There is no page with "
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<< pageNumber << " number in "
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<< _documentName;
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throw Exception(error);*/
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}
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return _pages[pageNumber];
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}
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void Document::saveAs(const char * newFileName)
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{
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//first two objects will be created by hand
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unsigned int fromObjNumber = 2;
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_root->recalculateObjectNumbers(fromObjNumber);
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_root->retrieveMaxObjectNumber(_maxObjectNumber);
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//sizes of all objects
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//key - object number
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//value - size of object
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std :: map < unsigned int, std::pair<unsigned long long, unsigned int > > sizesAndGenerationNumbers;
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std::ofstream out;
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out.open(newFileName, std::ios::binary);
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if(!out.is_open())
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{
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std::string error("Access denied on file ");
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error.append(newFileName);
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throw Exception(error);
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}
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out << firstObj.c_str();
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_root->serialize( out, sizesAndGenerationNumbers);
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std::map< unsigned int, std::pair<unsigned long long, unsigned int > >::iterator sizeIterator;
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unsigned int numberOfObjects = 2;
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for ( sizeIterator = sizesAndGenerationNumbers.begin() ; sizeIterator != sizesAndGenerationNumbers.end(); sizeIterator++ )
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{
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numberOfObjects++;
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}
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//create xref
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out << "xref\n"
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<< "0 " << numberOfObjects << "\n"
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<< "0000000000 65535 f \n"
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<< "0000000009 00000 n \n";
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unsigned long long sizeInXref = firstObj.size();
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for ( sizeIterator = sizesAndGenerationNumbers.begin() ; sizeIterator != sizesAndGenerationNumbers.end(); sizeIterator++ )
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{
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out << std::setfill('0')<<std::setw(10)<<sizeInXref << " " << std::setw(5) << (*sizeIterator).second.second << " n \n";
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sizeInXref = sizeInXref + (*sizeIterator).second.first;
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}
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out << "trailer\n<<\n/Size " << numberOfObjects << "\n/Info 1 0 R\n"
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<< "/Root " << _root->getObjectNumber() << " 0 R\n >>\nstartxref\n" << sizeInXref << "\n%%EOF";
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}
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Object * Document::getDocumentObject()
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{
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return _root;
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}
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