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/*
* Copyright 2005,2006 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 Library 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 "Url.h"
#include "MIMEScanner.h"
#include "GoogleAPIEngine.h"
#include "GAPIGoogleSearchBindingProxy.h"
#include "GAPI.nsmap"
using std::cout;
using std::cerr;
using std::endl;
GoogleAPIEngine::GoogleAPIEngine(const string &key) :
WebEngine(),
m_key(key)
{
}
GoogleAPIEngine::~GoogleAPIEngine()
{
}
/// Retrieves the specified URL from the cache; NULL if error. Caller deletes.
Document *GoogleAPIEngine::retrieveCachedUrl(const string &url)
{
GoogleSearchBinding soapProxy;
xsd__base64Binary base64Page;
if ((m_key.empty() == true) ||
(soapProxy.gapi1__doGetCachedPage(m_key, url, base64Page)))
{
return NULL;
}
if ((base64Page.__ptr != NULL) &&
(base64Page. __size > 0))
{
Url urlObj(url);
Document *pDoc = new Document(url, url, MIMEScanner::scanUrl(urlObj), "");
pDoc->setData((const char*)base64Page.__ptr, (unsigned int)base64Page. __size);
return pDoc;
}
return NULL;
}
/// Checks spelling.
string GoogleAPIEngine::checkSpelling(const string &text)
{
GoogleSearchBinding soapProxy;
string spellOut;
if ((m_key.empty() == true) ||
(soapProxy.gapi1__doSpellingSuggestion(m_key, text, spellOut)))
{
return "";
}
return spellOut;
}
//
// Implementation of SearchEngineInterface
//
/// Runs a query; true if success.
bool GoogleAPIEngine::runQuery(QueryProperties& queryProps,
unsigned int startDoc)
{
string queryString(queryProps.getFreeQuery(true));
unsigned int maxResultsCount = queryProps.getMaximumResultsCount();
m_resultsList.clear();
m_resultsCountEstimate = 0;
if (queryProps.getType() != QueryProperties::XAPIAN_QP)
{
cerr << "GoogleAPIEngine::runQuery: query type not supported" << endl;
return false;
}
setQuery(queryProps);
if (m_key.empty() == true)
{
cerr << "GoogleAPIEngine::runQuery: no key" << endl;
return false;
}
if (queryString.empty() == true)
{
#ifdef DEBUG
cout << "GoogleAPIEngine::runQuery: query is empty" << endl;
#endif
return false;
}
#ifdef DEBUG
cout << "GoogleAPIEngine::runQuery: query is " << queryString << endl;
#endif
GoogleSearchBinding soapProxy;
struct gapi1__doGoogleSearchResponse queryOut;
// No filter, no safe search
int soapStatus = soapProxy.gapi1__doGoogleSearch(m_key, queryString, 0, (int)(maxResultsCount > 10 ? 10 : maxResultsCount),
false, "", false, "", "utf-8", "utf-8", queryOut);
if (soapStatus != SOAP_OK)
{
cerr << "GoogleAPIEngine::runQuery: search failed with status " << soapStatus << endl;
return false;
}
struct gapi1__GoogleSearchResult *searchResult = queryOut.return_;
if ((searchResult != NULL) &&
(searchResult->resultElements != NULL))
{
float pseudoScore = 100;
m_resultsCountEstimate = searchResult->estimatedTotalResultsCount;
for (int i = 0; i < searchResult->resultElements->__size; ++i)
{
struct gapi1__ResultElement *resultElement = searchResult->resultElements->__ptr[i];
DocumentInfo result(resultElement->title, resultElement->URL, "", "");
result.setExtract(resultElement->snippet);
result.setScore(pseudoScore);
if (processResult("http://www.google.com/", result) == true)
{
m_resultsList.push_back(result);
--pseudoScore;
}
}
}
return true;
}
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