phantomjs/python/pyphantomjs/csconverter.py

61 lines
2.3 KiB
Python

'''
This file is part of the PyPhantomJS project.
Copyright (C) 2011 James Roe <roejames12@hotmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
'''
import sys
from PyQt4.QtCore import QObject, QFile, QCoreApplication
from PyQt4.QtWebKit import QWebPage
CSConverterInstance = None
class CSConverter(QObject):
def __init__(self, parent):
QObject.__init__(self, parent)
self.m_webPage = QWebPage(self)
converter = QFile(':/resources/coffee-script.js')
if not converter.open(QFile.ReadOnly):
sys.exit('CoffeeScript compiler is not available!')
script = str(converter.readAll())
converter.close()
self.m_webPage.mainFrame().evaluateJavaScript(script)
self.m_webPage.mainFrame().addToJavaScriptWindowObject('converter', self)
def convert(self, script):
self.setProperty('source', script)
result = self.m_webPage.mainFrame().evaluateJavaScript('''try {
[true, this.CoffeeScript.compile(converter.source)];
} catch (error) {
[false, error.message];
}
''')
return result
@staticmethod
def instance():
global CSConverterInstance
# We need only one instance of the CSConverter for our whole life
if CSConverterInstance is None:
CSConverterInstance = CSConverter(QCoreApplication.instance())
return CSConverterInstance