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/*
* Copyright 2005-2012 Fabrice Colin
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <iostream>
#include <algorithm>
#include "MIMEScanner.h"
#include "Url.h"
#include "FilterUtils.h"
#include "FileCollector.h"
using namespace std;
class LastIPathAction : public ReducedAction
{
public:
LastIPathAction(const string &ipath) :
ReducedAction(),
m_ipath(ipath),
m_pDocument(NULL)
{
}
virtual ~LastIPathAction()
{
}
virtual bool positionFilter(const Document &doc, Dijon::Filter *pFilter)
{
string::size_type nextPos = m_ipath.find("&next&");
string thisIPath(m_ipath);
if (nextPos != string::npos)
{
thisIPath = m_ipath.substr(0, nextPos);
}
if (pFilter != NULL)
{
#ifdef DEBUG
clog << "LastIPathAction::positionFilter: moving filter for "
<< pFilter->get_mime_type() << " to ipath " << thisIPath << endl;
#endif
pFilter->set_property(Dijon::Filter::OPERATING_MODE, "view");
// Skip forward
pFilter->skip_to_document(thisIPath);
}
if (nextPos != string::npos)
{
m_ipath.erase(0, nextPos + 6);
}
else
{
m_ipath.clear();
}
return true;
}
virtual bool isReduced(const Document &doc)
{
if (m_ipath.empty() == false)
{
// Go one level deeper
#ifdef DEBUG
clog << "LastIPathAction::isReduced: not final" << endl;
#endif
return false;
}
return true;
}
virtual bool takeAction(Document &doc, bool isNested)
{
if (m_ipath.empty() == true)
{
m_pDocument = new Document(doc);
#ifdef DEBUG
clog << "LastIPathAction::takeAction: ipath " << doc.getInternalPath() << " is final" << endl;
#endif
}
return true;
}
Document *getDocument(void)
{
return m_pDocument;
}
protected:
string m_ipath;
Document *m_pDocument;
private:
LastIPathAction(const LastIPathAction &other);
LastIPathAction &operator=(const LastIPathAction &other);
};
FileCollector::FileCollector() :
DownloaderInterface()
{
}
FileCollector::~FileCollector()
{
}
//
// Implementation of DownloaderInterface
//
/// Retrieves the specified document; NULL if error.
Document *FileCollector::retrieveUrl(const DocumentInfo &docInfo)
{
Url thisUrl(docInfo.getLocation());
string protocol(thisUrl.getProtocol());
string ipath(docInfo.getInternalPath());
if (protocol != "file")
{
// We can't handle that type of protocol...
return NULL;
}
string fileLocation(thisUrl.getLocation());
fileLocation += "/";
fileLocation += thisUrl.getFile();
Document *pDocument = new Document(docInfo);
if (pDocument->setDataFromFile(fileLocation) == false)
{
delete pDocument;
return NULL;
}
// Determine the file type
string type(MIMEScanner::scanFile(fileLocation));
// Stop here ?
if (ipath.empty() == true)
{
if (pDocument->getType().empty() == true)
{
pDocument->setType(type);
}
return pDocument;
}
// Reset these to avoid confusing the filters
pDocument->setInternalPath("");
pDocument->setType(type);
LastIPathAction action(ipath);
bool reduced = FilterUtils::reduceDocument(*pDocument, action);
if (reduced == true)
{
Document *pBottomMostDocument = action.getDocument();
if (pBottomMostDocument != NULL)
{
delete pDocument;
return pBottomMostDocument;
}
}
return pDocument;
}
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