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