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188 lines (131 loc) · 5.58 KB
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = 'ipetrash'
try:
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
except:
try:
from PyQt4.QtGui import *
from PyQt4.QtCore import *
except:
from PySide.QtGui import *
from PySide.QtCore import *
import traceback
def log_uncaught_exceptions(ex_cls, ex, tb):
text = '{}: {}:\n'.format(ex_cls.__name__, ex)
import traceback
text += ''.join(traceback.format_tb(tb))
print(text)
QMessageBox.critical(None, 'Error', text)
sys.exit(1)
import sys
sys.excepthook = log_uncaught_exceptions
class MainWindow(QWidget):
ESCAPE_RULES = [
('"', '"', r'\"', True),
("'", "'", r"\'", True),
(r'\n', "\n", r'\n', True),
(r'\t', "\t", r'\t', True),
(r'\b', "\b", r'\b', True),
(r'\f', "\f", r'\f', False),
('\\', "\\", '\\\\', False),
]
TITLE = 'EscapeString'
def __init__(self):
super().__init__()
self.setWindowTitle(self.TITLE)
self.escape_char_by_checkbox = {}
self.char_by_escape = {}
button_layout = QHBoxLayout()
for title, char, escape, checked in self.ESCAPE_RULES:
checkbox = QCheckBox(title)
checkbox.setChecked(checked)
checkbox.clicked.connect(self.input_text_changed)
font = checkbox.font()
font.setBold(True)
font.setPointSize(font.pointSize() + 2)
checkbox.setFont(font)
button_layout.addWidget(checkbox)
self.escape_char_by_checkbox[char] = checkbox
self.char_by_escape[char] = escape
button_layout.addStretch()
layout = QVBoxLayout()
layout.addLayout(button_layout)
self.text_edit_input = QPlainTextEdit()
self.text_edit_output = QPlainTextEdit()
self.text_edit_output.setReadOnly(True)
self.label_error = QLabel()
self.label_error.setStyleSheet("QLabel { color : red; }")
self.label_error.setTextInteractionFlags(Qt.TextSelectableByMouse)
self.label_error.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Preferred)
self.button_detail_error = QPushButton('...')
self.button_detail_error.setFixedSize(20, 20)
self.button_detail_error.setToolTip('Detail error')
self.button_detail_error.clicked.connect(self.show_detail_error_massage)
self.button_detail_error.hide()
self.last_error_message = None
self.last_detail_error_message = None
self.text_edit_input.textChanged.connect(self.input_text_changed)
self.label_input_number = QLabel()
self.label_output_number = QLabel()
splitter = QSplitter()
splitter.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
splitter.addWidget(self.text_edit_input)
splitter.addWidget(self.text_edit_output)
layout.addWidget(splitter)
layout_error = QHBoxLayout()
layout_error.addWidget(self.label_error)
layout_error.addWidget(self.button_detail_error)
layout.addLayout(layout_error)
self.setLayout(layout)
def show_detail_error_massage(self):
if not self.last_error_message or not self.last_detail_error_message:
return
message = self.last_error_message + '\n\n' + self.last_detail_error_message
mb = QErrorMessage()
mb.setWindowTitle('Error')
# Сообщение ошибки содержит отступы, символы-переходы на следующую строку,
# которые поломаются при вставке через QErrorMessage.showMessage, и нет возможности
# выбрать тип текста, то делаем такой хак.
mb.findChild(QTextEdit).setPlainText(message)
mb.exec_()
def input_text_changed(self):
self.label_error.clear()
self.button_detail_error.hide()
self.last_error_message = None
self.last_detail_error_message = None
try:
import time
t = time.clock()
out_text = self.text_edit_input.toPlainText()
new_out_text = []
for char in out_text:
# Если char нет в словаре экранирования или флаг экранирования для char выключен
if char not in self.escape_char_by_checkbox or not self.escape_char_by_checkbox[char].isChecked():
new_out_text.append(char)
continue
new_out_text.append(self.char_by_escape[char])
out_text = ''.join(new_out_text)
self.text_edit_output.setPlainText(out_text)
self.setWindowTitle(
f'{self.TITLE} (number of characters: '
f'{len(self.text_edit_input.toPlainText())} -> '
f'{len(self.text_edit_output.toPlainText())})'
)
print('Escape for {:.6f} secs'.format(time.clock() - t))
except Exception as e:
# Выводим ошибку в консоль
traceback.print_exc()
# Сохраняем в переменную
tb = traceback.format_exc()
self.last_error_message = str(e)
self.last_detail_error_message = str(tb)
self.button_detail_error.show()
self.label_error.setText('Error: ' + self.last_error_message)
if __name__ == '__main__':
app = QApplication([])
mw = MainWindow()
mw.resize(650, 500)
mw.show()
sys.exit(app.exec_())