eric6/VirtualEnv/VirtualenvExecDialog.py

Sun, 02 Feb 2020 11:04:32 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sun, 02 Feb 2020 11:04:32 +0100
changeset 7380
c99320e859ca
parent 7360
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child 7781
607a6098cb44
permissions
-rw-r--r--

Fixed an issue related to showing the application name in the menu bar of Gnome desktop under Wayland.

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2014 - 2020 Detlev Offenbach <detlev@die-offenbachs.de>
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4 #
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5
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6 """
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7 Module implementing the virtualenv execution dialog.
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8 """
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9
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10
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11 import sys
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12 import os
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13
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14 from PyQt5.QtCore import QProcess, QTimer, QUrl
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15 from PyQt5.QtGui import QDesktopServices
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16 from PyQt5.QtWidgets import QDialog, QDialogButtonBox
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17
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18 from .Ui_VirtualenvExecDialog import Ui_VirtualenvExecDialog
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19
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20 import Preferences
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21 from Globals import isWindowsPlatform
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22
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23
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24 class VirtualenvExecDialog(QDialog, Ui_VirtualenvExecDialog):
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25 """
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26 Class implementing the virtualenv execution dialog.
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27
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28 This class starts a QProcess and displays a dialog that
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29 shows the output of the virtualenv or pyvenv process.
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30 """
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31 def __init__(self, configuration, venvManager, parent=None):
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32 """
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33 Constructor
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34
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35 @param configuration dictionary containing the configuration parameters
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36 as returned by the command configuration dialog
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37 @type dict
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38 @param venvManager reference to the virtual environment manager
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39 @type VirtualenvManager
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40 @param parent reference to the parent widget
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41 @type QWidget
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42 """
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43 super(VirtualenvExecDialog, self).__init__(parent)
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44 self.setupUi(self)
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45
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46 self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False)
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47 self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True)
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48
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49 self.__pyvenv = configuration["envType"] == "pyvenv"
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50 self.__targetDir = configuration["targetDirectory"]
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51 self.__openTarget = configuration["openTarget"]
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52 self.__createLog = configuration["createLog"]
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53 self.__createScript = configuration["createScript"]
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54 self.__venvName = configuration["logicalName"]
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55 self.__venvManager = venvManager
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56
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57 self.__process = None
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58 self.__cmd = ""
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59
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60 if self.__pyvenv:
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61 self.__calls = []
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62 if configuration["pythonExe"]:
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63 self.__calls.append((configuration["pythonExe"],
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64 ["-m", "venv"]))
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65 self.__calls.extend([
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66 (sys.executable.replace("w.exe", ".exe"),
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67 ["-m", "venv"]),
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68 ("python3", ["-m", "venv"]),
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69 ("python", ["-m", "venv"]),
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70 ])
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71 else:
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72 self.__calls = [
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73 (sys.executable.replace("w.exe", ".exe"),
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74 ["-m", "virtualenv"]),
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75 ("virtualenv", []),
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76 ]
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77 self.__callIndex = 0
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78 self.__callArgs = []
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79
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80 def start(self, arguments):
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81 """
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82 Public slot to start the virtualenv command.
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83
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84 @param arguments commandline arguments for virtualenv/pyvenv program
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85 (list of strings)
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86 """
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87 if self.__callIndex == 0:
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88 # first attempt, add a given python interpreter and do
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89 # some other setup
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90 self.errorGroup.hide()
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91 self.contents.clear()
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92 self.errors.clear()
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93
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94 self.__process = QProcess()
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95 self.__process.readyReadStandardOutput.connect(self.__readStdout)
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96 self.__process.readyReadStandardError.connect(self.__readStderr)
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97 self.__process.finished.connect(self.__finish)
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98
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99 if not self.__pyvenv:
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100 for arg in arguments:
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101 if arg.startswith("--python="):
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102 prog = arg.replace("--python=", "")
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103 self.__calls.insert(
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104 0, (prog, ["-m", "virtualenv"]))
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105 break
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106 self.__callArgs = arguments
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107
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108 prog, args = self.__calls[self.__callIndex]
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109 args.extend(self.__callArgs)
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110 self.__cmd = "{0} {1}".format(prog, " ".join(args))
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111 self.__logOutput(self.tr("Executing: {0}\n").format(
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112 self.__cmd))
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113 self.__process.start(prog, args)
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114 procStarted = self.__process.waitForStarted(5000)
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115 if not procStarted:
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116 self.__logOutput(self.tr("Failed\n\n"))
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117 self.__nextAttempt()
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118
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119 def on_buttonBox_clicked(self, button):
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120 """
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121 Private slot called by a button of the button box clicked.
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122
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123 @param button button that was clicked (QAbstractButton)
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124 """
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125 if button == self.buttonBox.button(QDialogButtonBox.Close):
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126 self.accept()
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127 elif button == self.buttonBox.button(QDialogButtonBox.Cancel):
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128 self.__finish(0, 0, giveUp=True)
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129
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130 def __finish(self, exitCode, exitStatus, giveUp=False):
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131 """
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132 Private slot called when the process finished.
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133
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134 It is called when the process finished or
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135 the user pressed the button.
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136
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137 @param exitCode exit code of the process (integer)
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138 @param exitStatus exit status of the process (QProcess.ExitStatus)
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139 @keyparam giveUp flag indicating to not start another attempt (boolean)
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140 """
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parents: 7229
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141 if (
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parents: 7229
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142 self.__process is not None and
7c017076c12e Continued to resolve code style issue M841.
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parents: 7229
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143 self.__process.state() != QProcess.NotRunning
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144 ):
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145 self.__process.terminate()
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146 QTimer.singleShot(2000, self.__process.kill)
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147 self.__process.waitForFinished(3000)
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148
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149 self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True)
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150 self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False)
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151 self.buttonBox.button(QDialogButtonBox.Close).setDefault(True)
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152
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153 if not giveUp:
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154 if exitCode != 0:
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155 self.__logOutput(self.tr("Failed\n\n"))
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156 if len(self.errors.toPlainText().splitlines()) == 1:
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157 self.errors.clear()
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158 self.errorGroup.hide()
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159 self.__nextAttempt()
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160 return
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161
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162 self.__process = None
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163
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164 if self.__pyvenv:
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165 self.__logOutput(self.tr('\npyvenv finished.\n'))
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166 else:
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167 self.__logOutput(self.tr('\nvirtualenv finished.\n'))
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168
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169 if os.path.exists(self.__targetDir):
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170 if self.__createScript:
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171 self.__writeScriptFile()
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172
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173 if self.__createLog:
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174 self.__writeLogFile()
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175
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176 if self.__openTarget:
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177 QDesktopServices.openUrl(QUrl.fromLocalFile(
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178 self.__targetDir))
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179
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180 self.__venvManager.addVirtualEnv(self.__venvName,
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181 self.__targetDir)
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182
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183 def __nextAttempt(self):
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184 """
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185 Private method to start another attempt.
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186 """
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187 self.__callIndex += 1
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188 if self.__callIndex < len(self.__calls):
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diff changeset
189 self.start(self.__callArgs)
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190 else:
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diff changeset
191 if self.__pyvenv:
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parents:
diff changeset
192 self.__logError(
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parents:
diff changeset
193 self.tr('No suitable pyvenv program could be'
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
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parents:
diff changeset
194 ' started.\n'))
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diff changeset
195 else:
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parents:
diff changeset
196 self.__logError(
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parents:
diff changeset
197 self.tr('No suitable virtualenv program could be'
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
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parents:
diff changeset
198 ' started.\n'))
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parents:
diff changeset
199 self.__cmd = ""
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diff changeset
200 self.__finish(0, 0, giveUp=True)
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201
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parents:
diff changeset
202 def __readStdout(self):
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parents:
diff changeset
203 """
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
204 Private slot to handle the readyReadStandardOutput signal.
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parents:
diff changeset
205
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parents:
diff changeset
206 It reads the output of the process, formats it and inserts it into
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
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parents:
diff changeset
207 the contents pane.
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diff changeset
208 """
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diff changeset
209 self.__process.setReadChannel(QProcess.StandardOutput)
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210
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diff changeset
211 while self.__process.canReadLine():
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parents: 6048
diff changeset
212 s = str(self.__process.readLine(),
6014
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parents:
diff changeset
213 Preferences.getSystem("IOEncoding"),
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diff changeset
214 'replace')
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
215 self.__logOutput(s)
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parents:
diff changeset
216
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parents:
diff changeset
217 def __readStderr(self):
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parents:
diff changeset
218 """
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parents:
diff changeset
219 Private slot to handle the readyReadStandardError signal.
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220
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diff changeset
221 It reads the error output of the process and inserts it into the
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
222 error pane.
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parents:
diff changeset
223 """
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diff changeset
224 self.__process.setReadChannel(QProcess.StandardError)
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225
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diff changeset
226 while self.__process.canReadLine():
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diff changeset
227 s = str(self.__process.readLine(),
6014
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parents:
diff changeset
228 Preferences.getSystem("IOEncoding"),
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parents:
diff changeset
229 'replace')
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
230 self.__logError(s)
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parents:
diff changeset
231
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parents:
diff changeset
232 def __logOutput(self, s):
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parents:
diff changeset
233 """
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
234 Private method to log some output.
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
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parents:
diff changeset
235
6677
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parents: 6676
diff changeset
236 @param s output string to log (string)
6014
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237 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
238 self.contents.insertPlainText(s)
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parents:
diff changeset
239 self.contents.ensureCursorVisible()
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parents:
diff changeset
240
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
241 def __logError(self, s):
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242 """
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243 Private method to log an error.
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244
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diff changeset
245 @param s error string to log (string)
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246 """
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247 self.errorGroup.show()
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248 self.errors.insertPlainText(s)
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249 self.errors.ensureCursorVisible()
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250
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251 def __writeLogFile(self):
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252 """
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253 Private method to write a log file to the virtualenv directory.
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254 """
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255 outtxt = self.contents.toPlainText()
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256 if self.__pyvenv:
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257 logFile = os.path.join(self.__targetDir, "pyvenv.log")
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258 else:
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259 logFile = os.path.join(self.__targetDir, "virtualenv.log")
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260 self.__logOutput(self.tr("\nWriting log file '{0}'.\n")
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261 .format(logFile))
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262
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parents:
diff changeset
263 try:
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264 f = open(logFile, "w", encoding="utf-8")
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265 f.write(self.tr("Output:\n"))
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266 f.write(outtxt)
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267 errtxt = self.errors.toPlainText()
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268 if errtxt:
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269 f.write("\n")
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270 f.write(self.tr("Errors:\n"))
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271 f.write(errtxt)
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272 f.close()
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diff changeset
273 except (IOError, OSError) as err:
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parents:
diff changeset
274 self.__logError(
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275 self.tr("""The logfile '{0}' could not be written.\n"""
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diff changeset
276 """Reason: {1}\n""").format(logFile, str(err)))
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diff changeset
277 self.__logOutput(self.tr("Done.\n"))
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parents:
diff changeset
278
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diff changeset
279 def __writeScriptFile(self):
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parents:
diff changeset
280 """
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parents:
diff changeset
281 Private method to write a script file to the virtualenv directory.
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parents:
diff changeset
282 """
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parents:
diff changeset
283 if self.__pyvenv:
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284 basename = "create_pyvenv"
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diff changeset
285 else:
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diff changeset
286 basename = "create_virtualenv"
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diff changeset
287 if isWindowsPlatform():
6495
6e73d31af3af Changed the extension of the generated script files for Windows from '.bat' to '.cmd'.
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parents: 6337
diff changeset
288 script = os.path.join(self.__targetDir, basename + ".cmd")
6014
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diff changeset
289 txt = self.__cmd
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parents:
diff changeset
290 else:
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parents:
diff changeset
291 script = os.path.join(self.__targetDir, basename + ".sh")
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diff changeset
292 txt = "#!/usr/bin/env sh\n\n" + self.__cmd
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diff changeset
293
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parents:
diff changeset
294 self.__logOutput(self.tr("\nWriting script file '{0}'.\n")
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parents:
diff changeset
295 .format(script))
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parents:
diff changeset
296
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
297 try:
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parents:
diff changeset
298 f = open(script, "w", encoding="utf-8")
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parents:
diff changeset
299 f.write(txt)
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parents:
diff changeset
300 f.close()
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parents:
diff changeset
301 except (IOError, OSError) as err:
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
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parents:
diff changeset
302 self.__logError(
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parents:
diff changeset
303 self.tr("""The script file '{0}' could not be written.\n"""
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parents:
diff changeset
304 """Reason: {1}\n""").format(script, str(err)))
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
305 self.__logOutput(self.tr("Done.\n"))

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