--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eric7/Plugins/WizardPlugins/PyRegExpWizard/PyRegExpWizardDialog.py Sat May 15 18:45:04 2021 +0200
@@ -0,0 +1,706 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2004 - 2021 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the Python re wizard dialog.
+"""
+
+import os
+import re
+
+from PyQt5.QtCore import QFileInfo, pyqtSlot
+from PyQt5.QtGui import QClipboard, QTextCursor
+from PyQt5.QtWidgets import (
+ QWidget, QDialog, QInputDialog, QApplication, QDialogButtonBox,
+ QVBoxLayout, QTableWidgetItem
+)
+
+from E5Gui import E5MessageBox, E5FileDialog
+from E5Gui.E5MainWindow import E5MainWindow
+
+from .Ui_PyRegExpWizardDialog import Ui_PyRegExpWizardDialog
+
+import UI.PixmapCache
+
+import Utilities
+import Preferences
+
+
+class PyRegExpWizardWidget(QWidget, Ui_PyRegExpWizardDialog):
+ """
+ Class implementing the Python re wizard dialog.
+ """
+ def __init__(self, parent=None, fromEric=True):
+ """
+ Constructor
+
+ @param parent parent widget (QWidget)
+ @param fromEric flag indicating a call from within eric
+ """
+ super().__init__(parent)
+ self.setupUi(self)
+
+ # initialize icons of the tool buttons
+ self.commentButton.setIcon(UI.PixmapCache.getIcon("comment"))
+ self.charButton.setIcon(UI.PixmapCache.getIcon("characters"))
+ self.anycharButton.setIcon(UI.PixmapCache.getIcon("anychar"))
+ self.repeatButton.setIcon(UI.PixmapCache.getIcon("repeat"))
+ self.nonGroupButton.setIcon(UI.PixmapCache.getIcon("nongroup"))
+ self.groupButton.setIcon(UI.PixmapCache.getIcon("group"))
+ self.namedGroupButton.setIcon(UI.PixmapCache.getIcon("namedgroup"))
+ self.namedReferenceButton.setIcon(
+ UI.PixmapCache.getIcon("namedreference"))
+ self.altnButton.setIcon(UI.PixmapCache.getIcon("altn"))
+ self.beglineButton.setIcon(UI.PixmapCache.getIcon("begline"))
+ self.endlineButton.setIcon(UI.PixmapCache.getIcon("endline"))
+ self.wordboundButton.setIcon(
+ UI.PixmapCache.getIcon("wordboundary"))
+ self.nonwordboundButton.setIcon(
+ UI.PixmapCache.getIcon("nonwordboundary"))
+ self.poslookaheadButton.setIcon(
+ UI.PixmapCache.getIcon("poslookahead"))
+ self.neglookaheadButton.setIcon(
+ UI.PixmapCache.getIcon("neglookahead"))
+ self.poslookbehindButton.setIcon(
+ UI.PixmapCache.getIcon("poslookbehind"))
+ self.neglookbehindButton.setIcon(
+ UI.PixmapCache.getIcon("neglookbehind"))
+ self.undoButton.setIcon(UI.PixmapCache.getIcon("editUndo"))
+ self.redoButton.setIcon(UI.PixmapCache.getIcon("editRedo"))
+
+ self.namedGroups = re.compile(r"""\(?P<([^>]+)>""").findall
+
+ self.saveButton = self.buttonBox.addButton(
+ self.tr("Save"), QDialogButtonBox.ButtonRole.ActionRole)
+ self.saveButton.setToolTip(
+ self.tr("Save the regular expression to a file"))
+ self.loadButton = self.buttonBox.addButton(
+ self.tr("Load"), QDialogButtonBox.ButtonRole.ActionRole)
+ self.loadButton.setToolTip(
+ self.tr("Load a regular expression from a file"))
+ self.validateButton = self.buttonBox.addButton(
+ self.tr("Validate"), QDialogButtonBox.ButtonRole.ActionRole)
+ self.validateButton.setToolTip(
+ self.tr("Validate the regular expression"))
+ self.executeButton = self.buttonBox.addButton(
+ self.tr("Execute"), QDialogButtonBox.ButtonRole.ActionRole)
+ self.executeButton.setToolTip(
+ self.tr("Execute the regular expression"))
+ self.nextButton = self.buttonBox.addButton(
+ self.tr("Next match"), QDialogButtonBox.ButtonRole.ActionRole)
+ self.nextButton.setToolTip(
+ self.tr("Show the next match of the regular expression"))
+ self.nextButton.setEnabled(False)
+
+ if fromEric:
+ self.buttonBox.setStandardButtons(
+ QDialogButtonBox.StandardButton.Cancel |
+ QDialogButtonBox.StandardButton.Ok)
+ self.copyButton = None
+ else:
+ self.copyButton = self.buttonBox.addButton(
+ self.tr("Copy"), QDialogButtonBox.ButtonRole.ActionRole)
+ self.copyButton.setToolTip(
+ self.tr("Copy the regular expression to the clipboard"))
+ self.buttonBox.setStandardButtons(
+ QDialogButtonBox.StandardButton.Close)
+ self.variableLabel.hide()
+ self.variableLineEdit.hide()
+ self.variableLine.hide()
+ self.importCheckBox.hide()
+ self.regexpTextEdit.setFocus()
+
+ def __insertString(self, s, steps=0):
+ """
+ Private method to insert a string into line edit and move cursor.
+
+ @param s string to be inserted into the regexp line edit
+ (string)
+ @param steps number of characters to move the cursor (integer).
+ Negative steps moves cursor back, positives forward.
+ """
+ self.regexpTextEdit.insertPlainText(s)
+ tc = self.regexpTextEdit.textCursor()
+ if steps != 0:
+ if steps < 0:
+ act = QTextCursor.MoveOperation.Left
+ steps = abs(steps)
+ else:
+ act = QTextCursor.MoveOperation.Right
+ for _ in range(steps):
+ tc.movePosition(act)
+ self.regexpTextEdit.setTextCursor(tc)
+
+ @pyqtSlot()
+ def on_commentButton_clicked(self):
+ """
+ Private slot to handle the comment toolbutton.
+ """
+ self.__insertString("(?#)", -1)
+
+ @pyqtSlot()
+ def on_anycharButton_clicked(self):
+ """
+ Private slot to handle the any character toolbutton.
+ """
+ self.__insertString(".")
+
+ @pyqtSlot()
+ def on_nonGroupButton_clicked(self):
+ """
+ Private slot to handle the non group toolbutton.
+ """
+ self.__insertString("(?:)", -1)
+
+ @pyqtSlot()
+ def on_groupButton_clicked(self):
+ """
+ Private slot to handle the group toolbutton.
+ """
+ self.__insertString("()", -1)
+
+ @pyqtSlot()
+ def on_namedGroupButton_clicked(self):
+ """
+ Private slot to handle the named group toolbutton.
+ """
+ self.__insertString("(?P<>)", -2)
+
+ @pyqtSlot()
+ def on_namedReferenceButton_clicked(self):
+ """
+ Private slot to handle the named reference toolbutton.
+ """
+ # determine cursor position as length into text
+ length = self.regexpTextEdit.textCursor().position()
+
+ # only present group names that occur before the
+ # current cursor position
+ regex = self.regexpTextEdit.toPlainText()[:length]
+ names = self.namedGroups(regex)
+ if not names:
+ E5MessageBox.information(
+ self,
+ self.tr("Named reference"),
+ self.tr("""No named groups have been defined yet."""))
+ return
+
+ groupName, ok = QInputDialog.getItem(
+ self,
+ self.tr("Named reference"),
+ self.tr("Select group name:"),
+ names,
+ 0, True)
+ if ok and groupName:
+ self.__insertString("(?P={0})".format(groupName))
+
+ @pyqtSlot()
+ def on_altnButton_clicked(self):
+ """
+ Private slot to handle the alternatives toolbutton.
+ """
+ self.__insertString("(|)", -2)
+
+ @pyqtSlot()
+ def on_beglineButton_clicked(self):
+ """
+ Private slot to handle the begin line toolbutton.
+ """
+ self.__insertString("^")
+
+ @pyqtSlot()
+ def on_endlineButton_clicked(self):
+ """
+ Private slot to handle the end line toolbutton.
+ """
+ self.__insertString("$")
+
+ @pyqtSlot()
+ def on_wordboundButton_clicked(self):
+ """
+ Private slot to handle the word boundary toolbutton.
+ """
+ self.__insertString("\\b")
+
+ @pyqtSlot()
+ def on_nonwordboundButton_clicked(self):
+ """
+ Private slot to handle the non word boundary toolbutton.
+ """
+ self.__insertString("\\B")
+
+ @pyqtSlot()
+ def on_poslookaheadButton_clicked(self):
+ """
+ Private slot to handle the positive lookahead toolbutton.
+ """
+ self.__insertString("(?=)", -1)
+
+ @pyqtSlot()
+ def on_neglookaheadButton_clicked(self):
+ """
+ Private slot to handle the negative lookahead toolbutton.
+ """
+ self.__insertString("(?!)", -1)
+
+ @pyqtSlot()
+ def on_poslookbehindButton_clicked(self):
+ """
+ Private slot to handle the positive lookbehind toolbutton.
+ """
+ self.__insertString("(?<=)", -1)
+
+ @pyqtSlot()
+ def on_neglookbehindButton_clicked(self):
+ """
+ Private slot to handle the negative lookbehind toolbutton.
+ """
+ self.__insertString("(?<!)", -1)
+
+ @pyqtSlot()
+ def on_repeatButton_clicked(self):
+ """
+ Private slot to handle the repeat toolbutton.
+ """
+ from .PyRegExpWizardRepeatDialog import PyRegExpWizardRepeatDialog
+ dlg = PyRegExpWizardRepeatDialog(self)
+ if dlg.exec() == QDialog.DialogCode.Accepted:
+ self.__insertString(dlg.getRepeat())
+
+ @pyqtSlot()
+ def on_charButton_clicked(self):
+ """
+ Private slot to handle the characters toolbutton.
+ """
+ from .PyRegExpWizardCharactersDialog import (
+ PyRegExpWizardCharactersDialog
+ )
+ dlg = PyRegExpWizardCharactersDialog(self)
+ if dlg.exec() == QDialog.DialogCode.Accepted:
+ self.__insertString(dlg.getCharacters())
+
+ @pyqtSlot()
+ def on_undoButton_clicked(self):
+ """
+ Private slot to handle the undo action.
+ """
+ self.regexpTextEdit.document().undo()
+
+ @pyqtSlot()
+ def on_redoButton_clicked(self):
+ """
+ Private slot to handle the redo action.
+ """
+ self.regexpTextEdit.document().redo()
+
+ def on_buttonBox_clicked(self, button):
+ """
+ Private slot called by a button of the button box clicked.
+
+ @param button button that was clicked (QAbstractButton)
+ """
+ if button == self.validateButton:
+ self.on_validateButton_clicked()
+ elif button == self.executeButton:
+ self.on_executeButton_clicked()
+ elif button == self.saveButton:
+ self.on_saveButton_clicked()
+ elif button == self.loadButton:
+ self.on_loadButton_clicked()
+ elif button == self.nextButton:
+ self.on_nextButton_clicked()
+ elif self.copyButton and button == self.copyButton:
+ self.on_copyButton_clicked()
+
+ @pyqtSlot()
+ def on_saveButton_clicked(self):
+ """
+ Private slot to save the regexp to a file.
+ """
+ fname, selectedFilter = E5FileDialog.getSaveFileNameAndFilter(
+ self,
+ self.tr("Save regular expression"),
+ "",
+ self.tr("RegExp Files (*.rx);;All Files (*)"),
+ None,
+ E5FileDialog.Options(E5FileDialog.DontConfirmOverwrite))
+ if fname:
+ ext = QFileInfo(fname).suffix()
+ if not ext:
+ ex = selectedFilter.split("(*")[1].split(")")[0]
+ if ex:
+ fname += ex
+ if QFileInfo(fname).exists():
+ res = E5MessageBox.yesNo(
+ self,
+ self.tr("Save regular expression"),
+ self.tr("<p>The file <b>{0}</b> already exists."
+ " Overwrite it?</p>").format(fname),
+ icon=E5MessageBox.Warning)
+ if not res:
+ return
+
+ fname = Utilities.toNativeSeparators(fname)
+ try:
+ with open(fname, "w", encoding="utf-8") as f:
+ f.write(self.regexpTextEdit.toPlainText())
+ except OSError as err:
+ E5MessageBox.information(
+ self,
+ self.tr("Save regular expression"),
+ self.tr("""<p>The regular expression could not"""
+ """ be saved.</p><p>Reason: {0}</p>""")
+ .format(str(err)))
+
+ @pyqtSlot()
+ def on_loadButton_clicked(self):
+ """
+ Private slot to load a regexp from a file.
+ """
+ fname = E5FileDialog.getOpenFileName(
+ self,
+ self.tr("Load regular expression"),
+ "",
+ self.tr("RegExp Files (*.rx);;All Files (*)"))
+ if fname:
+ fname = Utilities.toNativeSeparators(fname)
+ try:
+ with open(fname, "r", encoding="utf-8") as f:
+ regexp = f.read()
+ self.regexpTextEdit.setPlainText(regexp)
+ except OSError as err:
+ E5MessageBox.information(
+ self,
+ self.tr("Save regular expression"),
+ self.tr("""<p>The regular expression could not"""
+ """ be saved.</p><p>Reason: {0}</p>""")
+ .format(str(err)))
+
+ @pyqtSlot()
+ def on_copyButton_clicked(self):
+ """
+ Private slot to copy the regexp string into the clipboard.
+
+ This slot is only available, if not called from within eric.
+ """
+ escaped = self.regexpTextEdit.toPlainText()
+ if escaped:
+ escaped = escaped.replace("\\", "\\\\")
+ cb = QApplication.clipboard()
+ cb.setText(escaped, QClipboard.Mode.Clipboard)
+ if cb.supportsSelection():
+ cb.setText(escaped, QClipboard.Mode.Selection)
+
+ @pyqtSlot()
+ def on_validateButton_clicked(self):
+ """
+ Private slot to validate the entered regexp.
+ """
+ regex = self.regexpTextEdit.toPlainText()
+ if regex:
+ try:
+ flags = 0
+ if not self.caseSensitiveCheckBox.isChecked():
+ flags |= re.IGNORECASE
+ if self.multilineCheckBox.isChecked():
+ flags |= re.MULTILINE
+ if self.dotallCheckBox.isChecked():
+ flags |= re.DOTALL
+ if self.verboseCheckBox.isChecked():
+ flags |= re.VERBOSE
+ if self.unicodeCheckBox.isChecked():
+ flags |= re.ASCII
+ re.compile(regex, flags)
+ E5MessageBox.information(
+ self,
+ self.tr("Validation"),
+ self.tr("""The regular expression is valid."""))
+ except re.error as e:
+ E5MessageBox.critical(
+ self,
+ self.tr("Error"),
+ self.tr("""Invalid regular expression: {0}""")
+ .format(str(e)))
+ return
+ except IndexError:
+ E5MessageBox.critical(
+ self,
+ self.tr("Error"),
+ self.tr("""Invalid regular expression: missing"""
+ """ group name"""))
+ return
+ else:
+ E5MessageBox.critical(
+ self,
+ self.tr("Error"),
+ self.tr("""A regular expression must be given."""))
+
+ @pyqtSlot()
+ def on_executeButton_clicked(self, startpos=0):
+ """
+ Private slot to execute the entered regexp on the test text.
+
+ This slot will execute the entered regexp on the entered test
+ data and will display the result in the table part of the dialog.
+
+ @param startpos starting position for the regexp matching
+ """
+ regex = self.regexpTextEdit.toPlainText()
+ text = self.textTextEdit.toPlainText()
+ if regex and text:
+ try:
+ flags = 0
+ if not self.caseSensitiveCheckBox.isChecked():
+ flags |= re.IGNORECASE
+ if self.multilineCheckBox.isChecked():
+ flags |= re.MULTILINE
+ if self.dotallCheckBox.isChecked():
+ flags |= re.DOTALL
+ if self.verboseCheckBox.isChecked():
+ flags |= re.VERBOSE
+ if self.unicodeCheckBox.isChecked():
+ flags |= re.ASCII
+ regobj = re.compile(regex, flags)
+ matchobj = regobj.search(text, startpos)
+ if matchobj is not None:
+ captures = len(matchobj.groups())
+ if captures is None:
+ captures = 0
+ else:
+ captures = 0
+ row = 0
+ OFFSET = 5
+
+ self.resultTable.setColumnCount(0)
+ self.resultTable.setColumnCount(3)
+ self.resultTable.setRowCount(0)
+ self.resultTable.setRowCount(OFFSET)
+ self.resultTable.setItem(
+ row, 0, QTableWidgetItem(self.tr("Regexp")))
+ self.resultTable.setItem(
+ row, 1, QTableWidgetItem(regex))
+
+ if matchobj is not None:
+ offset = matchobj.start()
+ self.lastMatchEnd = matchobj.end()
+ self.nextButton.setEnabled(True)
+ row += 1
+ self.resultTable.setItem(
+ row, 0,
+ QTableWidgetItem(self.tr("Offset")))
+ self.resultTable.setItem(
+ row, 1,
+ QTableWidgetItem("{0:d}".format(matchobj.start(0))))
+
+ row += 1
+ self.resultTable.setItem(
+ row, 0,
+ QTableWidgetItem(self.tr("Captures")))
+ self.resultTable.setItem(
+ row, 1,
+ QTableWidgetItem("{0:d}".format(captures)))
+ row += 1
+ self.resultTable.setItem(
+ row, 1,
+ QTableWidgetItem(self.tr("Text")))
+ self.resultTable.setItem(
+ row, 2,
+ QTableWidgetItem(self.tr("Characters")))
+
+ row += 1
+ self.resultTable.setItem(
+ row, 0,
+ QTableWidgetItem(self.tr("Match")))
+ self.resultTable.setItem(
+ row, 1,
+ QTableWidgetItem(matchobj.group(0)))
+ self.resultTable.setItem(
+ row, 2,
+ QTableWidgetItem(
+ "{0:d}".format(len(matchobj.group(0)))))
+
+ for i in range(1, captures + 1):
+ if matchobj.group(i) is not None:
+ row += 1
+ self.resultTable.insertRow(row)
+ self.resultTable.setItem(
+ row, 0,
+ QTableWidgetItem(
+ self.tr("Capture #{0}").format(i)))
+ self.resultTable.setItem(
+ row, 1, QTableWidgetItem(matchobj.group(i)))
+ self.resultTable.setItem(
+ row, 2, QTableWidgetItem(
+ "{0:d}".format(len(matchobj.group(i)))))
+
+ # highlight the matched text
+ tc = self.textTextEdit.textCursor()
+ tc.setPosition(offset)
+ tc.setPosition(self.lastMatchEnd,
+ QTextCursor.MoveMode.KeepAnchor)
+ self.textTextEdit.setTextCursor(tc)
+ else:
+ self.nextButton.setEnabled(False)
+ self.resultTable.setRowCount(2)
+ row += 1
+ if startpos > 0:
+ self.resultTable.setItem(
+ row, 0,
+ QTableWidgetItem(self.tr("No more matches")))
+ else:
+ self.resultTable.setItem(
+ row, 0,
+ QTableWidgetItem(self.tr("No matches")))
+
+ # remove the highlight
+ tc = self.textTextEdit.textCursor()
+ tc.setPosition(0)
+ self.textTextEdit.setTextCursor(tc)
+
+ self.resultTable.resizeColumnsToContents()
+ self.resultTable.resizeRowsToContents()
+ self.resultTable.verticalHeader().hide()
+ self.resultTable.horizontalHeader().hide()
+ except re.error as e:
+ E5MessageBox.critical(
+ self,
+ self.tr("Error"),
+ self.tr("""Invalid regular expression: {0}""")
+ .format(str(e)))
+ return
+ except IndexError:
+ E5MessageBox.critical(
+ self,
+ self.tr("Error"),
+ self.tr("""Invalid regular expression: missing"""
+ """ group name"""))
+ return
+ else:
+ E5MessageBox.critical(
+ self,
+ self.tr("Error"),
+ self.tr("""A regular expression and a text must be"""
+ """ given."""))
+
+ @pyqtSlot()
+ def on_nextButton_clicked(self):
+ """
+ Private slot to find the next match.
+ """
+ self.on_executeButton_clicked(self.lastMatchEnd)
+
+ @pyqtSlot()
+ def on_regexpTextEdit_textChanged(self):
+ """
+ Private slot called when the regexp changes.
+ """
+ self.nextButton.setEnabled(False)
+
+ def getCode(self, indLevel, indString):
+ """
+ Public method to get the source code.
+
+ @param indLevel indentation level (int)
+ @param indString string used for indentation (space or tab) (string)
+ @return generated code (string)
+ """
+ # calculate the indentation string
+ istring = indLevel * indString
+ i1string = (indLevel + 1) * indString
+ estring = os.linesep + indLevel * indString
+
+ # now generate the code
+ reVar = self.variableLineEdit.text()
+ if not reVar:
+ reVar = "regexp"
+
+ regexp = self.regexpTextEdit.toPlainText()
+
+ flags = []
+ if not self.caseSensitiveCheckBox.isChecked():
+ flags.append('re.IGNORECASE')
+ if self.multilineCheckBox.isChecked():
+ flags.append('re.MULTILINE')
+ if self.dotallCheckBox.isChecked():
+ flags.append('re.DOTALL')
+ if self.verboseCheckBox.isChecked():
+ flags.append('re.VERBOSE')
+ if self.unicodeCheckBox.isChecked():
+ flags.append('re.ASCII')
+ flags = " | ".join(flags)
+
+ code = ''
+ if self.importCheckBox.isChecked():
+ code += 'import re{0}{1}'.format(os.linesep, istring)
+ code += '{0} = re.compile('.format(reVar)
+ code += '{0}{1}r"""{2}"""'.format(
+ os.linesep, i1string, regexp.replace('"', '\\"'))
+ if flags:
+ code += ',{0}{1}{2}'.format(os.linesep, i1string, flags)
+ code += '){0}'.format(estring)
+ return code
+
+
+class PyRegExpWizardDialog(QDialog):
+ """
+ Class for the dialog variant.
+ """
+ def __init__(self, parent=None, fromEric=True):
+ """
+ Constructor
+
+ @param parent parent widget (QWidget)
+ @param fromEric flag indicating a call from within eric
+ """
+ super().__init__(parent)
+ self.setModal(fromEric)
+ self.setSizeGripEnabled(True)
+
+ self.__layout = QVBoxLayout(self)
+ self.__layout.setContentsMargins(0, 0, 0, 0)
+ self.setLayout(self.__layout)
+
+ self.cw = PyRegExpWizardWidget(self, fromEric)
+ size = self.cw.size()
+ self.__layout.addWidget(self.cw)
+ self.resize(size)
+ self.setWindowTitle(self.cw.windowTitle())
+
+ self.cw.buttonBox.accepted.connect(self.accept)
+ self.cw.buttonBox.rejected.connect(self.reject)
+
+ def getCode(self, indLevel, indString):
+ """
+ Public method to get the source code.
+
+ @param indLevel indentation level (int)
+ @param indString string used for indentation (space or tab) (string)
+ @return generated code (string)
+ """
+ return self.cw.getCode(indLevel, indString)
+
+
+class PyRegExpWizardWindow(E5MainWindow):
+ """
+ Main window class for the standalone dialog.
+ """
+ def __init__(self, parent=None):
+ """
+ Constructor
+
+ @param parent reference to the parent widget (QWidget)
+ """
+ super().__init__(parent)
+ self.cw = PyRegExpWizardWidget(self, fromEric=False)
+ size = self.cw.size()
+ self.setCentralWidget(self.cw)
+ self.resize(size)
+ self.setWindowTitle(self.cw.windowTitle())
+
+ self.setStyle(
+ Preferences.getUI("Style"), Preferences.getUI("StyleSheet"))
+
+ self.cw.buttonBox.accepted.connect(self.close)
+ self.cw.buttonBox.rejected.connect(self.close)
