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/*
* Copyright (c) 2013 Tobias Markmann
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
/*
* Copyright (c) 2014 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swift/Controllers/ContactSuggester.h>
#include <boost/algorithm/string.hpp>
#include <boost/algorithm/string/find.hpp>
#include <boost/bind.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
#include <Swiften/Base/Algorithm.h>
#include <Swiften/Base/foreach.h>
#include <Swiften/JID/JID.h>
#include <Swift/Controllers/ContactProvider.h>
#include <algorithm>
#include <vector>
#include <set>
namespace lambda = boost::lambda;
namespace Swift {
ContactSuggester::ContactSuggester() {
}
ContactSuggester::~ContactSuggester() {
}
void ContactSuggester::addContactProvider(ContactProvider* provider) {
contactProviders_.push_back(provider);
}
bool ContactSuggester::matchContact(const std::string& search, const Contact::ref& c) {
if (fuzzyMatch(c->name, search)) {
return true;
}
else if (c->jid.isValid()) {
return fuzzyMatch(c->jid.toString(), search);
}
return false;
}
std::vector<Contact::ref> ContactSuggester::getSuggestions(const std::string& search, bool withMUCNicks) const {
std::vector<Contact::ref> results;
foreach(ContactProvider* provider, contactProviders_) {
append(results, provider->getContacts(withMUCNicks));
}
std::sort(results.begin(), results.end(), Contact::lexicographicalSortPredicate);
results.erase(std::unique(results.begin(), results.end(), Contact::equalityPredicate), results.end());
results.erase(std::remove_if(results.begin(), results.end(), !lambda::bind(&matchContact, search, lambda::_1)),
results.end());
std::sort(results.begin(), results.end(), boost::bind(&Contact::sortPredicate, _1, _2, search));
return results;
}
bool ContactSuggester::fuzzyMatch(std::string text, std::string match) {
std::string lowerText = text;
boost::algorithm::to_lower(lowerText);
std::string lowerMatch = match;
boost::algorithm::to_lower(lowerMatch);
size_t lastMatch = 0;
for (size_t i = 0; i < lowerMatch.length(); ++i) {
size_t where = lowerText.find_first_of(lowerMatch[i], lastMatch);
if (where == std::string::npos) {
return false;
}
lastMatch = where + 1;
}
return true;
}
}
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Swift