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/*
* Copyright (C) 2012 Lasath Fernando <kde@lasath.org>
* Copyright (C) 2012 Daniele E. Domenichelli <daniele.domenichelli@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "format-filter.h"
#include <QRegExp>
#include <KPluginFactory>
#include <KDebug>
typedef QPair<QRegExp, QString> FormatTag;
class FormatFilter::Private {
public:
QList<FormatTag> tags;
QString mainPattern;
QString allTagsPattern;
void addTag (const QString &markingCharacter, const QString &htmlTag);
QString filterString(QString string);
};
FormatFilter::FormatFilter (QObject* parent, const QVariantList&) :
KTp::AbstractMessageFilter (parent),
d(new Private())
{
// Matches a string
// 1. The beginning of the string or a white character [ (^|\\s) ]
// 2. Depending on the regexp the tag to be replaced or a pattern including
// all the tags in tagsMap [ %1 ]
// 3. One non-whitespace character, or by any string that starts and ends
// with a non-whitespace character [ (\\S|\\S.*\\S) ]
// 4. Same as 2. [ %1 ]
// 5. A white character or the end of the string [ (\\s|$) ]
d->mainPattern = QLatin1String("(^|\\s)%1(\\S|\\S.*\\S)%1(\\s|$)");
QMap<QString, QString> tagsMap;
tagsMap[QLatin1String("_")] = QLatin1Char('u');
tagsMap[QLatin1String("*")] = QLatin1Char('b');
tagsMap[QLatin1String("-")] = QLatin1Char('s');
tagsMap[QLatin1String("/")] = QLatin1Char('i');
d->allTagsPattern = QLatin1Char('(');
QMapIterator<QString, QString> i(tagsMap);
while (i.hasNext()) {
i.next();
d->allTagsPattern += QRegExp::escape(i.key());
if (i.hasNext())
d->allTagsPattern += QLatin1Char('|');
d->addTag(i.key(), i.value());
}
d->allTagsPattern += QLatin1Char(')');
}
FormatFilter::~FormatFilter()
{
delete d;
}
void FormatFilter::filterMessage (KTp::Message& message, const KTp::MessageContext &context)
{
Q_UNUSED(context)
message.setMainMessagePart(d->filterString(message.mainMessagePart()));
}
QString FormatFilter::Private::filterString(QString string)
{
QRegExp rx(mainPattern.arg(allTagsPattern));
rx.setMinimal(true);
int pos = 0;
while ((pos = string.indexOf(rx, pos)) != -1) {
string = string.replace(rx.cap(3), filterString(rx.cap(3)));
pos += rx.matchedLength();
}
Q_FOREACH(const FormatTag &tag, tags) {
string = string.replace(tag.first, tag.second);
}
return string;
}
void FormatFilter::Private::addTag (const QString &markingCharacter, const QString &htmlTag)
{
QString repl = QLatin1String("\\1<%1>%2\\2%2</%1>\\3");
repl = repl.arg(htmlTag).arg(markingCharacter);
QRegExp exp = QRegExp(mainPattern.arg(QRegExp::escape(markingCharacter)));
exp.setMinimal(true);
tags.append(FormatTag(exp, repl));
}
K_PLUGIN_FACTORY(MessageFilterFactory, registerPlugin<FormatFilter>();)
K_EXPORT_PLUGIN(MessageFilterFactory("ktptextui_message_filter_formatting"))
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