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///////////////////////////////////////////////////////////
// Merger.cpp
// Implementation of the Class Merger
// Created on: 19-???-2009 12:27:54
///////////////////////////////////////////////////////////
#include "Merger.h"
#include "Parser.h"
#include "OverlayDocumentParser.h"
#include "Exception.h"
#include <map>
#include <iostream>
using namespace merge_lib;
Parser Merger::_parser;
Merger::Merger():_baseDocuments(),_overlayDocument(0)
{
}
Merger::~Merger()
{
std::map<std::string, Document *>::iterator docIterator = _baseDocuments.begin();
for(; docIterator != _baseDocuments.end(); ++docIterator)
{
delete (*docIterator).second;
}
if( _overlayDocument )
{
delete _overlayDocument;
_overlayDocument = 0;
}
_baseDocuments.clear();
}
void Merger::addBaseDocument(const char * docName)
{
//if docName has been already opened then do nothing
if(_baseDocuments.count(docName))
return;
Document * newBaseDoc = _parser.parseDocument(docName);
_baseDocuments.insert(std::pair<std::string, Document *>(docName, newBaseDoc));
}
void Merger::addOverlayDocument(const char * docName)
{
if( _overlayDocument )
{
delete _overlayDocument;
_overlayDocument = 0;
}
if( !_overlayDocument )
{
OverlayDocumentParser overlayDocParser;
_overlayDocument = overlayDocParser.parseDocument(docName);
if( !_overlayDocument )
{
throw Exception("Error loading overlay document!");
}
}
}
// The main method which performs the merge
void Merger::merge(const char * overlayDocName, const MergeDescription & pagesToMerge)
{
if( !_overlayDocument)
{
addOverlayDocument(overlayDocName);
if( !_overlayDocument )
{
throw Exception("Error loading overlay document!");
}
}
MergeDescription::const_iterator pageIterator = pagesToMerge.begin();
for(; pageIterator != pagesToMerge.end(); ++pageIterator )
{
Page * destinationPage = _overlayDocument->getPage( (*pageIterator).overlayPageNumber);
if( destinationPage == 0 )
{
std::stringstream error;
error << "There is no page with " << (*pageIterator).overlayPageNumber <<
" number in " << overlayDocName;
throw Exception(error);
}
Document * sourceDocument = _baseDocuments[(*pageIterator).baseDocumentName];
Page * sourcePage = (sourceDocument == 0)? 0 : sourceDocument->getPage((*pageIterator).basePageNumber);
bool isPageDuplicated = false;
if( sourcePage )
{
unsigned int howManyTimesPageFound(0);
for(size_t i = 0; i < pagesToMerge.size(); ++i)
{
if(pagesToMerge[i].basePageNumber == (*pageIterator).basePageNumber)
++howManyTimesPageFound;
if(howManyTimesPageFound == 2)
break;
}
isPageDuplicated = (2 == howManyTimesPageFound) ? true : false;
}
destinationPage->merge(sourcePage, _overlayDocument, const_cast<MergePageDescription&>((*pageIterator)), isPageDuplicated);
}
}
// Method performs saving of merged documents into selected file
void Merger::saveMergedDocumentsAs(const char * outDocumentName)
{
_overlayDocument->saveAs(outDocumentName);
}