regexproperty.cpp
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Copyright 2012 The MITRE Corporation *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include <QRegularExpression>
#include <openbr/plugins/openbr_internal.h>
namespace br
{
/*!
* \ingroup transforms
* \brief Apply the input regular expression to the value of inputProperty, store the matched portion in outputProperty.
* \author Charles Otto \cite caotto
*/
class RegexPropertyTransform : public UntrainableMetadataTransform
{
Q_OBJECT
Q_PROPERTY(QString regexp READ get_regexp WRITE set_regexp RESET reset_regexp STORED false)
Q_PROPERTY(QString inputProperty READ get_inputProperty WRITE set_inputProperty RESET reset_inputProperty STORED false)
Q_PROPERTY(QString outputProperty READ get_outputProperty WRITE set_outputProperty RESET reset_outputProperty STORED false)
BR_PROPERTY(QString, regexp, "(.*)")
BR_PROPERTY(QString, inputProperty, "name")
BR_PROPERTY(QString, outputProperty, "Label")
void projectMetadata(const File &src, File &dst) const
{
dst = src;
QRegularExpression re(regexp);
QRegularExpressionMatch match = re.match(dst.get<QString>(inputProperty));
if (!match.hasMatch())
qFatal("Unable to match regular expression \"%s\" to base name \"%s\"!", qPrintable(regexp), qPrintable(dst.get<QString>(inputProperty)));
dst.set(outputProperty, match.captured(match.lastCapturedIndex()));
}
};
BR_REGISTER(Transform, RegexPropertyTransform)
} // namespace br
#include "metadata/regexproperty.moc"