Mercurial Repositories > eric / file comparison
comparison: Helpviewer/GreaseMonkey/GreaseMonkeyDownloader.py
Helpviewer/GreaseMonkey/GreaseMonkeyDownloader.py
- changeset 1953
- 26aa6fd94dc2
- child 1954
- 5072605ad4dd
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| 1952:af4103f0e93f | 1953:26aa6fd94dc2 |
|---|---|
| 1 # -*- coding: utf-8 -*- | |
| 2 | |
| 3 # Copyright (c) 2012 Detlev Offenbach <detlev@die-offenbachs.de> | |
| 4 # | |
| 5 | |
| 6 """ | |
| 7 Module implementing the downloader for GreaseMonkey scripts. | |
| 8 """ | |
| 9 | |
| 10 import os | |
| 11 | |
| 12 from PyQt4.QtCore import pyqtSignal, QObject, QSettings, QRegExp, QUrl | |
| 13 from PyQt4.QtGui import QDialog | |
| 14 from PyQt4.QtNetwork import QNetworkReply | |
| 15 | |
| 16 from E5Gui import E5MessageBox | |
| 17 | |
| 18 import Helpviewer.HelpWindow | |
| 19 from Helpviewer import HelpUtilities | |
| 20 from Helpviewer.Network.FollowRedirectReply import FollowRedirectReply | |
| 21 | |
| 22 from .GreaseMonkeyScript import GreaseMonkeyScript | |
| 23 from .GreaseMonkeyAddScriptDialog import GreaseMonkeyAddScriptDialog | |
| 24 | |
| 25 | |
| 26 class GreaseMonkeyDownloader(QObject): | |
| 27 """ | |
| 28 Class implementing the downloader for GreaseMonkey scripts. | |
| 29 """ | |
| 30 finished = pyqtSignal() | |
| 31 | |
| 32 def __init__(self, request, manager): | |
| 33 """ | |
| 34 Constructor | |
| 35 | |
| 36 @param request reference to the request object (QNetworkRequest) | |
| 37 @param manager reference to the GreaseMonkey manager (GreaseMonkeyManager) | |
| 38 """ | |
| 39 super().__init__() | |
| 40 | |
| 41 self.__manager = manager | |
| 42 | |
| 43 self.__reply = FollowRedirectReply(request.url(), | |
| 44 Helpviewer.HelpWindow.HelpWindow.networkAccessManager()) | |
| 45 self.__reply.finished.connect(self.__scriptDownloaded) | |
| 46 | |
| 47 self.__fileName = "" | |
| 48 self.__requireUrls = [] | |
| 49 | |
| 50 def __scriptDownloaded(self): | |
| 51 """ | |
| 52 Private slot to handle the finished download of a script. | |
| 53 """ | |
| 54 if self.sender() != self.__reply: | |
| 55 self.finished.emit() | |
| 56 return | |
| 57 | |
| 58 response = bytes(self.__reply.readAll()).decode() | |
| 59 | |
| 60 if self.__reply.error() == QNetworkReply.NoError and \ | |
| 61 "// ==UserScript==" in response: | |
| 62 filePath = os.path.join(self.__manager.scriptsDirectory(), | |
| 63 HelpUtilities.getFileNameFromUrl(self.__reply.url())) | |
| 64 self.__fileName = HelpUtilities.ensureUniqueFilename(filePath) | |
| 65 | |
| 66 try: | |
| 67 f = open(self.__fileName, "w") | |
| 68 except (IOError, OSError) as err: | |
| 69 E5MessageBox.critical(None, | |
| 70 self.trUtf8("GreaseMonkey Download"), | |
| 71 self.trUtf8("""<p>The file <b>{0}</b> could not be opened""" | |
| 72 """ for writing.<br/>Reason: {1}</p>""").format( | |
| 73 self.__fileName, str(err))) | |
| 74 self.finished.emit() | |
| 75 return | |
| 76 f.write(response) | |
| 77 f.close() | |
| 78 | |
| 79 settings = QSettings(os.path.join(self.__manager.requireScriptsDirectory(), | |
| 80 "requires.ini"), | |
| 81 QSettings.IniFormat) | |
| 82 settings.beginGroup("Files") | |
| 83 | |
| 84 rx = QRegExp("@require(.*)\\n") | |
| 85 rx.setMinimal(True) | |
| 86 rx.indexIn(response) | |
| 87 | |
| 88 for i in range(1, rx.captureCount() + 1): | |
| 89 url = rx.cap(i).strip() | |
| 90 if url and not settings.contains(url): | |
| 91 self.__requireUrls.append(QUrl(url)) | |
| 92 | |
| 93 self.__reply.deleteLater() | |
| 94 self.__reply = None | |
| 95 | |
| 96 self.__downloadRequires() | |
| 97 | |
| 98 def __requireDownloaded(self): | |
| 99 """ | |
| 100 Private slot to handle the finished download of a required script. | |
| 101 """ | |
| 102 if self.sender() != self.__reply: | |
| 103 self.finished.emit() | |
| 104 return | |
| 105 | |
| 106 response = bytes(self.__reply.readAll()).decode() | |
| 107 | |
| 108 if self.__reply.error() == QNetworkReply.NoError and response: | |
| 109 filePath = os.path.join(self.__manager.requireScriptsDirectory(), | |
| 110 "require.js") | |
| 111 fileName = HelpUtilities.ensureUniqueFilename(filePath, "{0}") | |
| 112 | |
| 113 try: | |
| 114 f = open(fileName, "w") | |
| 115 except (IOError, OSError) as err: | |
| 116 E5MessageBox.critical(None, | |
| 117 self.trUtf8("GreaseMonkey Download"), | |
| 118 self.trUtf8("""<p>The file <b>{0}</b> could not be opened""" | |
| 119 """ for writing.<br/>Reason: {1}</p>""").format( | |
| 120 fileName, str(err))) | |
| 121 self.finished.emit() | |
| 122 return | |
| 123 f.write(response) | |
| 124 f.close() | |
| 125 | |
| 126 settings = QSettings(os.path.join(self.__manager.requireScriptsDirectory(), | |
| 127 "requires.ini"), | |
| 128 QSettings.IniFormat) | |
| 129 settings.beginGroup("Files") | |
| 130 settings.setValue(self.__reply.originalUrl().toString(), fileName) | |
| 131 | |
| 132 self.__reply.deleteLater() | |
| 133 self.__reply = None | |
| 134 | |
| 135 self.__downloadRequires() | |
| 136 | |
| 137 def __downloadRequires(self): | |
| 138 """ | |
| 139 Private slot to initiate the download of required scripts. | |
| 140 """ | |
| 141 if self.__requireUrls: | |
| 142 self.__reply = FollowRedirectReply(self.__requireUrls.pop(0), | |
| 143 Helpviewer.HelpWindow.HelpWindow.networkAccessManager()) | |
| 144 self.__reply.finished.connect(self.__requireDownloaded) | |
| 145 else: | |
| 146 deleteScript = True | |
| 147 script = GreaseMonkeyScript(self.__manager, self.__fileName) | |
| 148 | |
| 149 if script.isValid(): | |
| 150 if not self.__manager.containsScript(script.fullName()): | |
| 151 dlg = GreaseMonkeyAddScriptDialog(self.__manager, script) | |
| 152 deleteScript = dlg.exec_() != QDialog.Accepted | |
| 153 else: | |
| 154 E5MessageBox.information(None, | |
| 155 self.trUtf8("GreaseMonkey Download"), | |
| 156 self.trUtf8("""<p><b>{0}</b> is already installed.</p>""") | |
| 157 .format(script.name())) | |
| 158 | |
| 159 if deleteScript: | |
| 160 try: | |
| 161 os.remove(self.__fileName) | |
| 162 except (IOError, OSError): | |
| 163 # ignore | |
| 164 pass | |
| 165 | |
| 166 self.finished.emit() |
