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Diffstat (limited to 'examples/corelib/tools/regexp.py')
| -rwxr-xr-x | examples/corelib/tools/regexp.py | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/examples/corelib/tools/regexp.py b/examples/corelib/tools/regexp.py new file mode 100755 index 000000000..7e28a5365 --- /dev/null +++ b/examples/corelib/tools/regexp.py @@ -0,0 +1,195 @@ +#!/usr/bin/env python + +############################################################################# +## +## 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 PySide 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_()) |