137 lines
3.0 KiB
C++
137 lines
3.0 KiB
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#include "RegexExplorer.h"
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RegexExplorer::RegexExplorer(QWidget* p)
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: QDialog(p)
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, m_matched(false)
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{
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this->setupUi(this);
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for (int i = 1; i < cmsys::RegularExpression::NSUBEXP; ++i) {
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matchNumber->addItem(QString("Match %1").arg(QString::number(i)),
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QVariant(i));
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}
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matchNumber->setCurrentIndex(0);
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}
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void RegexExplorer::setStatusColor(QWidget* widget, bool successful)
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{
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QColor color = successful ? QColor(0, 127, 0) : Qt::red;
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QPalette palette = widget->palette();
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palette.setColor(QPalette::Foreground, color);
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widget->setPalette(palette);
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}
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void RegexExplorer::on_regularExpression_textChanged(const QString& text)
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{
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#ifdef QT_NO_STL
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m_regex = text.toAscii().constData();
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#else
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m_regex = text.toStdString();
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#endif
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bool validExpression =
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stripEscapes(m_regex) && m_regexParser.compile(m_regex);
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if (!validExpression) {
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m_regexParser.set_invalid();
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}
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setStatusColor(labelRegexValid, validExpression);
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on_inputText_textChanged();
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}
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void RegexExplorer::on_inputText_textChanged()
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{
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if (m_regexParser.is_valid()) {
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QString plainText = inputText->toPlainText();
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#ifdef QT_NO_STL
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m_text = plainText.toAscii().constData();
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#else
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m_text = plainText.toStdString();
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#endif
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m_matched = m_regexParser.find(m_text);
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} else {
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m_matched = false;
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}
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setStatusColor(labelRegexMatch, m_matched);
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if (!m_matched) {
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clearMatch();
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return;
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}
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#ifdef QT_NO_STL
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QString matchText = m_regexParser.match(0).c_str();
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#else
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QString matchText = QString::fromStdString(m_regexParser.match(0));
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#endif
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match0->setPlainText(matchText);
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on_matchNumber_currentIndexChanged(matchNumber->currentIndex());
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}
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void RegexExplorer::on_matchNumber_currentIndexChanged(int index)
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{
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if (!m_matched) {
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return;
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}
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QVariant itemData = matchNumber->itemData(index);
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int idx = itemData.toInt();
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if (idx < 1 || idx >= cmsys::RegularExpression::NSUBEXP) {
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return;
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}
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#ifdef QT_NO_STL
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QString match = m_regexParser.match(idx).c_str();
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#else
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QString match = QString::fromStdString(m_regexParser.match(idx));
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#endif
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matchN->setPlainText(match);
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}
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void RegexExplorer::clearMatch()
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{
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match0->clear();
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matchN->clear();
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}
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bool RegexExplorer::stripEscapes(std::string& source)
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{
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const char* in = source.c_str();
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std::string result;
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result.reserve(source.size());
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for (char inc = *in; inc != '\0'; inc = *++in) {
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if (inc == '\\') {
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char nextc = in[1];
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if (nextc == 't') {
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result.append(1, '\t');
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in++;
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} else if (nextc == 'n') {
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result.append(1, '\n');
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in++;
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} else if (nextc == 't') {
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result.append(1, '\t');
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in++;
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} else if (isalnum(nextc) || nextc == '\0') {
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return false;
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} else {
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result.append(1, nextc);
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in++;
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}
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} else {
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result.append(1, inc);
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}
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}
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source = result;
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return true;
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}
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