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# -*- coding: utf-8 -*-
# Copyright (c) 2012 - 2017 Detlev Offenbach <detlev@die-offenbachs.de>
#
"""
Module implementing the downloader for GreaseMonkey scripts.
"""
from __future__ import unicode_literals
import os
from PyQt5.QtCore import pyqtSignal, QObject, QSettings, QRegExp, QUrl
from PyQt5.QtWidgets import QDialog
from PyQt5.QtNetwork import QNetworkReply, QNetworkRequest
from E5Gui import E5MessageBox
from WebBrowser.WebBrowserWindow import WebBrowserWindow
class GreaseMonkeyDownloader(QObject):
"""
Class implementing the downloader for GreaseMonkey scripts.
"""
finished = pyqtSignal()
def __init__(self, url, manager):
"""
Constructor
@param url URL to download script from
@type QUrl
@param manager reference to the GreaseMonkey manager
@type GreaseMonkeyManager
"""
super(GreaseMonkeyDownloader, self).__init__()
self.__manager = manager
self.__reply = WebBrowserWindow.networkManager().get(
QNetworkRequest(url))
self.__reply.finished.connect(self.__scriptDownloaded)
self.__fileName = ""
self.__requireUrls = []
def __scriptDownloaded(self):
"""
Private slot to handle the finished download of a script.
"""
if self.sender() != self.__reply:
self.finished.emit()
return
response = bytes(self.__reply.readAll()).decode()
if self.__reply.error() == QNetworkReply.NoError and \
"// ==UserScript==" in response:
from WebBrowser.Tools import WebBrowserTools
filePath = os.path.join(
self.__manager.scriptsDirectory(),
WebBrowserTools.getFileNameFromUrl(self.__reply.url()))
self.__fileName = WebBrowserTools.ensureUniqueFilename(filePath)
try:
f = open(self.__fileName, "w", encoding="utf-8")
except (IOError, OSError) as err:
E5MessageBox.critical(
None,
self.tr("GreaseMonkey Download"),
self.tr(
"""<p>The file <b>{0}</b> could not be opened"""
""" for writing.<br/>Reason: {1}</p>""").format(
self.__fileName, str(err)))
self.finished.emit()
return
f.write(response)
f.close()
settings = QSettings(
os.path.join(self.__manager.requireScriptsDirectory(),
"requires.ini"),
QSettings.IniFormat)
settings.beginGroup("Files")
rx = QRegExp("@require(.*)\\n")
rx.setMinimal(True)
rx.indexIn(response)
for i in range(1, rx.captureCount() + 1):
url = rx.cap(i).strip()
if url and not settings.contains(url):
self.__requireUrls.append(QUrl(url))
self.__reply.deleteLater()
self.__reply = None
self.__downloadRequires()
def __requireDownloaded(self):
"""
Private slot to handle the finished download of a required script.
"""
if self.sender() != self.__reply:
self.finished.emit()
return
response = bytes(self.__reply.readAll()).decode()
if self.__reply.error() == QNetworkReply.NoError and response:
from WebBrowser.Tools import WebBrowserTools
filePath = os.path.join(self.__manager.requireScriptsDirectory(),
"require.js")
fileName = WebBrowserTools.ensureUniqueFilename(filePath, "{0}")
try:
f = open(fileName, "w", encoding="utf-8")
except (IOError, OSError) as err:
E5MessageBox.critical(
None,
self.tr("GreaseMonkey Download"),
self.tr(
"""<p>The file <b>{0}</b> could not be opened"""
""" for writing.<br/>Reason: {1}</p>""").format(
fileName, str(err)))
self.finished.emit()
return
f.write(response)
f.close()
settings = QSettings(
os.path.join(self.__manager.requireScriptsDirectory(),
"requires.ini"),
QSettings.IniFormat)
settings.beginGroup("Files")
settings.setValue(self.__reply.originalUrl().toString(), fileName)
self.__reply.deleteLater()
self.__reply = None
self.__downloadRequires()
def __downloadRequires(self):
"""
Private slot to initiate the download of required scripts.
"""
if self.__requireUrls:
self.__reply = WebBrowserWindow.networkManager().get(
QNetworkRequest(self.__requireUrls.pop(0)))
self.__reply.finished.connect(self.__requireDownloaded)
else:
from .GreaseMonkeyScript import GreaseMonkeyScript
deleteScript = True
script = GreaseMonkeyScript(self.__manager, self.__fileName)
if script.isValid():
if not self.__manager.containsScript(script.fullName()):
from .GreaseMonkeyAddScriptDialog import \
GreaseMonkeyAddScriptDialog
dlg = GreaseMonkeyAddScriptDialog(self.__manager, script)
deleteScript = dlg.exec_() != QDialog.Accepted
else:
E5MessageBox.information(
None,
self.tr("GreaseMonkey Download"),
self.tr(
"""<p><b>{0}</b> is already installed.</p>""")
.format(script.name()))
if deleteScript:
try:
os.remove(self.__fileName)
except (IOError, OSError):
# ignore
pass
self.finished.emit()
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