############################################################################# ## ## Copyright (C) 2013 Riverbank Computing Limited. ## Copyright (C) 2016 The Qt Company Ltd. ## Contact: http://www.qt.io/licensing/ ## ## This file is part of the Qt for Python examples of the Qt Toolkit. ## ## $QT_BEGIN_LICENSE:BSD$ ## You may use this file under the terms of the BSD license as follows: ## ## "Redistribution and use in source and binary forms, with or without ## modification, are permitted provided that the following conditions are ## met: ## * Redistributions of source code must retain the above copyright ## notice, this list of conditions and the following disclaimer. ## * Redistributions in binary form must reproduce the above copyright ## notice, this list of conditions and the following disclaimer in ## the documentation and/or other materials provided with the ## distribution. ## * Neither the name of The Qt Company Ltd nor the names of its ## contributors may be used to endorse or promote products derived ## from this software without specific prior written permission. ## ## ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ## ## $QT_END_LICENSE$ ## ############################################################################# """PySide2 port of the widgets/tools/regexp example from Qt v5.x""" from PySide2 import QtCore, QtGui, QtWidgets class RegExpDialog(QtWidgets.QDialog): MaxCaptures = 6 def __init__(self, parent=None): super(RegExpDialog, self).__init__(parent) self.patternComboBox = QtWidgets.QComboBox() self.patternComboBox.setEditable(True) self.patternComboBox.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Preferred) patternLabel = QtWidgets.QLabel("&Pattern:") patternLabel.setBuddy(self.patternComboBox) self.escapedPatternLineEdit = QtWidgets.QLineEdit() self.escapedPatternLineEdit.setReadOnly(True) palette = self.escapedPatternLineEdit.palette() palette.setBrush(QtGui.QPalette.Base, palette.brush(QtGui.QPalette.Disabled, QtGui.QPalette.Base)) self.escapedPatternLineEdit.setPalette(palette) escapedPatternLabel = QtWidgets.QLabel("&Escaped Pattern:") escapedPatternLabel.setBuddy(self.escapedPatternLineEdit) self.syntaxComboBox = QtWidgets.QComboBox() self.syntaxComboBox.addItem("Regular expression v1", QtCore.QRegExp.RegExp) self.syntaxComboBox.addItem("Regular expression v2", QtCore.QRegExp.RegExp2) self.syntaxComboBox.addItem("Wildcard", QtCore.QRegExp.Wildcard) self.syntaxComboBox.addItem("Fixed string", QtCore.QRegExp.FixedString) syntaxLabel = QtWidgets.QLabel("&Pattern Syntax:") syntaxLabel.setBuddy(self.syntaxComboBox) self.textComboBox = QtWidgets.QComboBox() self.textComboBox.setEditable(True) self.textComboBox.setSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Preferred) textLabel = QtWidgets.QLabel("&Text:") textLabel.setBuddy(self.textComboBox) self.caseSensitiveCheckBox = QtWidgets.QCheckBox("Case &Sensitive") self.caseSensitiveCheckBox.setChecked(True) self.minimalCheckBox = QtWidgets.QCheckBox("&Minimal") indexLabel = QtWidgets.QLabel("Index of Match:") self.indexEdit = QtWidgets.QLineEdit() self.indexEdit.setReadOnly(True) matchedLengthLabel = QtWidgets.QLabel("Matched Length:") self.matchedLengthEdit = QtWidgets.QLineEdit() self.matchedLengthEdit.setReadOnly(True) self.captureLabels = [] self.captureEdits = [] for i in range(self.MaxCaptures): self.captureLabels.append(QtWidgets.QLabel("Capture %d:" % i)) self.captureEdits.append(QtWidgets.QLineEdit()) self.captureEdits[i].setReadOnly(True) self.captureLabels[0].setText("Match:") checkBoxLayout = QtWidgets.QHBoxLayout() checkBoxLayout.addWidget(self.caseSensitiveCheckBox) checkBoxLayout.addWidget(self.minimalCheckBox) checkBoxLayout.addStretch(1) mainLayout = QtWidgets.QGridLayout() mainLayout.addWidget(patternLabel, 0, 0) mainLayout.addWidget(self.patternComboBox, 0, 1) mainLayout.addWidget(escapedPatternLabel, 1, 0) mainLayout.addWidget(self.escapedPatternLineEdit, 1, 1) mainLayout.addWidget(syntaxLabel, 2, 0) mainLayout.addWidget(self.syntaxComboBox, 2, 1) mainLayout.addLayout(checkBoxLayout, 3, 0, 1, 2) mainLayout.addWidget(textLabel, 4, 0) mainLayout.addWidget(self.textComboBox, 4, 1) mainLayout.addWidget(indexLabel, 5, 0) mainLayout.addWidget(self.indexEdit, 5, 1) mainLayout.addWidget(matchedLengthLabel, 6, 0) mainLayout.addWidget(self.matchedLengthEdit, 6, 1) for i in range(self.MaxCaptures): mainLayout.addWidget(self.captureLabels[i], 7 + i, 0) mainLayout.addWidget(self.captureEdits[i], 7 + i, 1) self.setLayout(mainLayout) self.patternComboBox.editTextChanged.connect(self.refresh) self.textComboBox.editTextChanged.connect(self.refresh) self.caseSensitiveCheckBox.toggled.connect(self.refresh) self.minimalCheckBox.toggled.connect(self.refresh) self.syntaxComboBox.currentIndexChanged.connect(self.refresh) self.patternComboBox.addItem("[A-Za-z_]+([A-Za-z_0-9]*)") self.textComboBox.addItem("(10 + delta4)* 32") self.setWindowTitle("RegExp") self.setFixedHeight(self.sizeHint().height()) self.refresh() def refresh(self): self.setUpdatesEnabled(False) pattern = self.patternComboBox.currentText() text = self.textComboBox.currentText() escaped = str(pattern) escaped.replace('\\', '\\\\') escaped.replace('"', '\\"') self.escapedPatternLineEdit.setText('"' + escaped + '"') rx = QtCore.QRegExp(pattern) cs = QtCore.Qt.CaseInsensitive if self.caseSensitiveCheckBox.isChecked(): cs = QtCore.Qt.CaseSensitive rx.setCaseSensitivity(cs) rx.setMinimal(self.minimalCheckBox.isChecked()) syntax = self.syntaxComboBox.itemData(self.syntaxComboBox.currentIndex()) rx.setPatternSyntax(QtCore.QRegExp.PatternSyntax(syntax)) palette = self.patternComboBox.palette() if rx.isValid(): palette.setColor(QtGui.QPalette.Text, self.textComboBox.palette().color(QtGui.QPalette.Text)) else: palette.setColor(QtGui.QPalette.Text, QtCore.Qt.red) self.patternComboBox.setPalette(palette) self.indexEdit.setText(str(rx.indexIn(text))) self.matchedLengthEdit.setText(str(rx.matchedLength())) for i in range(self.MaxCaptures): self.captureLabels[i].setEnabled(i <= rx.captureCount()) self.captureEdits[i].setEnabled(i <= rx.captureCount()) self.captureEdits[i].setText(rx.cap(i)) self.setUpdatesEnabled(True) if __name__ == '__main__': import sys app = QtWidgets.QApplication(sys.argv) dialog = RegExpDialog() sys.exit(dialog.exec_())