eric6/VirtualEnv/VirtualenvExecDialog.py

Sat, 27 Feb 2021 12:08:23 +0100

author
Detlev Offenbach <detlev@die-offenbachs.de>
date
Sat, 27 Feb 2021 12:08:23 +0100
changeset 8138
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parent 7923
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child 8043
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child 8143
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permissions
-rw-r--r--

Shell: added functionality to show a prompt when the main client process has exited (e.g. a script ended).

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1 # -*- coding: utf-8 -*-
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2
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3 # Copyright (c) 2014 - 2021 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 import sys
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11 import os
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12
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13 from PyQt5.QtCore import QProcess, QTimer, QUrl
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14 from PyQt5.QtGui import QDesktopServices
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15 from PyQt5.QtWidgets import QDialog, QDialogButtonBox
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16
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17 from .Ui_VirtualenvExecDialog import Ui_VirtualenvExecDialog
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18
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19 import Preferences
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20 from Globals import isWindowsPlatform
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21
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22
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23 class VirtualenvExecDialog(QDialog, Ui_VirtualenvExecDialog):
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24 """
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25 Class implementing the virtualenv execution dialog.
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26
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27 This class starts a QProcess and displays a dialog that
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28 shows the output of the virtualenv or pyvenv process.
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29 """
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30 def __init__(self, configuration, venvManager, parent=None):
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31 """
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32 Constructor
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33
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34 @param configuration dictionary containing the configuration parameters
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35 as returned by the command configuration dialog
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36 @type dict
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37 @param venvManager reference to the virtual environment manager
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38 @type VirtualenvManager
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39 @param parent reference to the parent widget
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40 @type QWidget
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41 """
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42 super(VirtualenvExecDialog, self).__init__(parent)
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43 self.setupUi(self)
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44
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45 self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False)
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46 self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True)
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47
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48 self.__pyvenv = configuration["envType"] == "pyvenv"
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49 self.__targetDir = configuration["targetDirectory"]
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50 self.__openTarget = configuration["openTarget"]
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51 self.__createLog = configuration["createLog"]
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52 self.__createScript = configuration["createScript"]
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53 self.__venvName = configuration["logicalName"]
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54 self.__venvManager = venvManager
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55
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56 self.__process = None
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57 self.__cmd = ""
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58
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59 if self.__pyvenv:
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60 self.__calls = []
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61 if configuration["pythonExe"]:
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62 self.__calls.append((configuration["pythonExe"],
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63 ["-m", "venv"]))
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64 self.__calls.extend([
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65 (sys.executable.replace("w.exe", ".exe"),
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66 ["-m", "venv"]),
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67 ("python3", ["-m", "venv"]),
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68 ("python", ["-m", "venv"]),
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69 ])
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70 else:
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71 self.__calls = [
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72 (sys.executable.replace("w.exe", ".exe"),
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73 ["-m", "virtualenv"]),
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74 ("virtualenv", []),
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75 ]
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76 self.__callIndex = 0
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77 self.__callArgs = []
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78
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79 def start(self, arguments):
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80 """
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81 Public slot to start the virtualenv command.
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82
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83 @param arguments commandline arguments for virtualenv/pyvenv program
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84 (list of strings)
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85 """
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86 if self.__callIndex == 0:
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87 # first attempt, add a given python interpreter and do
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88 # some other setup
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89 self.errorGroup.hide()
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90 self.contents.clear()
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91 self.errors.clear()
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92
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93 self.__process = QProcess()
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94 self.__process.readyReadStandardOutput.connect(self.__readStdout)
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95 self.__process.readyReadStandardError.connect(self.__readStderr)
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96 self.__process.finished.connect(self.__finish)
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97
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98 if not self.__pyvenv:
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99 for arg in arguments:
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100 if arg.startswith("--python="):
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101 prog = arg.replace("--python=", "")
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102 self.__calls.insert(
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103 0, (prog, ["-m", "virtualenv"]))
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104 break
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105 self.__callArgs = arguments
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106
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107 prog, args = self.__calls[self.__callIndex]
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108 args.extend(self.__callArgs)
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109 self.__cmd = "{0} {1}".format(prog, " ".join(args))
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110 self.__logOutput(self.tr("Executing: {0}\n").format(
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111 self.__cmd))
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112 self.__process.start(prog, args)
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113 procStarted = self.__process.waitForStarted(5000)
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114 if not procStarted:
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115 self.__logOutput(self.tr("Failed\n\n"))
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116 self.__nextAttempt()
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117
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118 def on_buttonBox_clicked(self, button):
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119 """
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120 Private slot called by a button of the button box clicked.
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121
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122 @param button button that was clicked (QAbstractButton)
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123 """
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124 if button == self.buttonBox.button(QDialogButtonBox.Close):
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125 self.accept()
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126 elif button == self.buttonBox.button(QDialogButtonBox.Cancel):
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127 self.__finish(0, 0, giveUp=True)
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128
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129 def __finish(self, exitCode, exitStatus, giveUp=False):
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130 """
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131 Private slot called when the process finished.
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132
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133 It is called when the process finished or
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134 the user pressed the button.
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135
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136 @param exitCode exit code of the process (integer)
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137 @param exitStatus exit status of the process (QProcess.ExitStatus)
7900
72b88fb20261 Corrected the use of '@keyparam' in the source documentation.
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parents: 7836
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138 @param giveUp flag indicating to not start another attempt (boolean)
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139 """
7259
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parents: 7229
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140 if (
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parents: 7229
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141 self.__process is not None and
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parents: 7229
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142 self.__process.state() != QProcess.NotRunning
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parents: 7229
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143 ):
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144 self.__process.terminate()
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145 QTimer.singleShot(2000, self.__process.kill)
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146 self.__process.waitForFinished(3000)
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147
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148 self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True)
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149 self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False)
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150 self.buttonBox.button(QDialogButtonBox.Close).setDefault(True)
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151
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152 if not giveUp:
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153 if exitCode != 0:
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154 self.__logOutput(self.tr("Failed\n\n"))
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155 if len(self.errors.toPlainText().splitlines()) == 1:
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156 self.errors.clear()
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157 self.errorGroup.hide()
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158 self.__nextAttempt()
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159 return
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160
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161 self.__process = None
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162
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163 if self.__pyvenv:
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164 self.__logOutput(self.tr('\npyvenv finished.\n'))
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165 else:
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166 self.__logOutput(self.tr('\nvirtualenv finished.\n'))
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167
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168 if os.path.exists(self.__targetDir):
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169 if self.__createScript:
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170 self.__writeScriptFile()
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171
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172 if self.__createLog:
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173 self.__writeLogFile()
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174
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175 if self.__openTarget:
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diff changeset
176 QDesktopServices.openUrl(QUrl.fromLocalFile(
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177 self.__targetDir))
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178
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179 self.__venvManager.addVirtualEnv(self.__venvName,
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180 self.__targetDir)
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181
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182 def __nextAttempt(self):
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183 """
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184 Private method to start another attempt.
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185 """
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186 self.__callIndex += 1
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187 if self.__callIndex < len(self.__calls):
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188 self.start(self.__callArgs)
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189 else:
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190 if self.__pyvenv:
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diff changeset
191 self.__logError(
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diff changeset
192 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
193 ' started.\n'))
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diff changeset
194 else:
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diff changeset
195 self.__logError(
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parents:
diff changeset
196 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
197 ' started.\n'))
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diff changeset
198 self.__cmd = ""
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diff changeset
199 self.__finish(0, 0, giveUp=True)
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200
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diff changeset
201 def __readStdout(self):
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parents:
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202 """
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
203 Private slot to handle the readyReadStandardOutput signal.
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parents:
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204
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parents:
diff changeset
205 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
206 the contents pane.
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diff changeset
207 """
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208 self.__process.setReadChannel(QProcess.StandardOutput)
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209
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diff changeset
210 while self.__process.canReadLine():
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parents: 6048
diff changeset
211 s = str(self.__process.readLine(),
6014
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parents:
diff changeset
212 Preferences.getSystem("IOEncoding"),
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213 'replace')
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
214 self.__logOutput(s)
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215
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parents:
diff changeset
216 def __readStderr(self):
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diff changeset
217 """
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parents:
diff changeset
218 Private slot to handle the readyReadStandardError signal.
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219
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diff changeset
220 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
221 error pane.
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parents:
diff changeset
222 """
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diff changeset
223 self.__process.setReadChannel(QProcess.StandardError)
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224
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diff changeset
225 while self.__process.canReadLine():
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diff changeset
226 s = str(self.__process.readLine(),
6014
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parents:
diff changeset
227 Preferences.getSystem("IOEncoding"),
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parents:
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228 'replace')
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
229 self.__logError(s)
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parents:
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230
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parents:
diff changeset
231 def __logOutput(self, s):
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parents:
diff changeset
232 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
233 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
234
6677
6299d69a218a Continued implementing environment creation with conda.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6676
diff changeset
235 @param s output string to log (string)
6014
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236 """
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parents:
diff changeset
237 self.contents.insertPlainText(s)
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parents:
diff changeset
238 self.contents.ensureCursorVisible()
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parents:
diff changeset
239
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parents:
diff changeset
240 def __logError(self, s):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
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241 """
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242 Private method to log an error.
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Detlev Offenbach <detlev@die-offenbachs.de>
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243
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244 @param s error string to log (string)
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245 """
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246 self.errorGroup.show()
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247 self.errors.insertPlainText(s)
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248 self.errors.ensureCursorVisible()
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249
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250 def __writeLogFile(self):
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251 """
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diff changeset
252 Private method to write a log file to the virtualenv directory.
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253 """
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Detlev Offenbach <detlev@die-offenbachs.de>
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254 outtxt = self.contents.toPlainText()
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255 if self.__pyvenv:
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256 logFile = os.path.join(self.__targetDir, "pyvenv.log")
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257 else:
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diff changeset
258 logFile = os.path.join(self.__targetDir, "virtualenv.log")
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259 self.__logOutput(self.tr("\nWriting log file '{0}'.\n")
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260 .format(logFile))
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parents:
diff changeset
261
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
262 try:
7785
9978016560ec Changed code to use context manager 'open()' for file operations.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
diff changeset
263 with open(logFile, "w", encoding="utf-8") as f:
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parents: 7781
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264 f.write(self.tr("Output:\n"))
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
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265 f.write(outtxt)
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
diff changeset
266 errtxt = self.errors.toPlainText()
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
diff changeset
267 if errtxt:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
diff changeset
268 f.write("\n")
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parents: 7781
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269 f.write(self.tr("Errors:\n"))
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parents: 7781
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270 f.write(errtxt)
7836
2f0d208b8137 Changed code to not use the OSError aliases (IOError, EnvironmentError, socket.error and select.error) anymore.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7785
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271 except OSError as err:
6014
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272 self.__logError(
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273 self.tr("""The logfile '{0}' could not be written.\n"""
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diff changeset
274 """Reason: {1}\n""").format(logFile, str(err)))
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parents:
diff changeset
275 self.__logOutput(self.tr("Done.\n"))
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parents:
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276
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parents:
diff changeset
277 def __writeScriptFile(self):
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
278 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
279 Private method to write a script file to the virtualenv directory.
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
280 """
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
281 if self.__pyvenv:
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parents:
diff changeset
282 basename = "create_pyvenv"
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
283 else:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
284 basename = "create_virtualenv"
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parents:
diff changeset
285 if isWindowsPlatform():
6495
6e73d31af3af Changed the extension of the generated script files for Windows from '.bat' to '.cmd'.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 6337
diff changeset
286 script = os.path.join(self.__targetDir, basename + ".cmd")
6014
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parents:
diff changeset
287 txt = self.__cmd
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
288 else:
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
289 script = os.path.join(self.__targetDir, basename + ".sh")
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parents:
diff changeset
290 txt = "#!/usr/bin/env sh\n\n" + self.__cmd
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
291
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
292 self.__logOutput(self.tr("\nWriting script file '{0}'.\n")
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
293 .format(script))
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
294
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
295 try:
7785
9978016560ec Changed code to use context manager 'open()' for file operations.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
diff changeset
296 with open(script, "w", encoding="utf-8") as f:
9978016560ec Changed code to use context manager 'open()' for file operations.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7781
diff changeset
297 f.write(txt)
7836
2f0d208b8137 Changed code to not use the OSError aliases (IOError, EnvironmentError, socket.error and select.error) anymore.
Detlev Offenbach <detlev@die-offenbachs.de>
parents: 7785
diff changeset
298 except OSError as err:
6014
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
299 self.__logError(
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
300 self.tr("""The script file '{0}' could not be written.\n"""
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Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
301 """Reason: {1}\n""").format(script, str(err)))
d3375a0a3240 Added the virtualenv/pyvenv interface plug-in to the core plug-ins.
Detlev Offenbach <detlev@die-offenbachs.de>
parents:
diff changeset
302 self.__logOutput(self.tr("Done.\n"))

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