--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Plugins/UiExtensionPlugins/VirtualenvInterface/VirtualenvExecDialog.py Sun Dec 10 12:27:28 2017 +0100
@@ -0,0 +1,306 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2014 - 2017 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing the virtualenv execution dialog.
+"""
+
+from __future__ import unicode_literals
+try:
+ str = unicode
+except NameError:
+ pass
+
+import sys
+import os
+
+from PyQt5.QtCore import QProcess, QTimer, QUrl
+from PyQt5.QtGui import QDesktopServices
+from PyQt5.QtWidgets import QDialog, QDialogButtonBox
+
+from .Ui_VirtualenvExecDialog import Ui_VirtualenvExecDialog
+
+import Preferences
+from Globals import isWindowsPlatform
+
+
+class VirtualenvExecDialog(QDialog, Ui_VirtualenvExecDialog):
+ """
+ Class implementing the virtualenv execution dialog.
+
+ This class starts a QProcess and displays a dialog that
+ shows the output of the virtualenv or pyvenv process.
+ """
+ def __init__(self, pyvenv, targetDir, openTarget, createLog, createScript,
+ interpreter, parent=None):
+ """
+ Constructor
+
+ @param pyvenv flag indicating the use of 'pyvenv' (boolean)
+ @param targetDir name of the virtualenv directory (string)
+ @param openTarget flag indicating to open the virtualenv directory
+ in a file manager (boolean)
+ @param createLog flag indicating to create a log file of the
+ creation process (boolean)
+ @param createScript flag indicating to create a script to recreate
+ the virtual environment (boolean)
+ @param interpreter name of the python interpreter to use (string)
+ @param parent reference to the parent widget (QWidget)
+ """
+ super(VirtualenvExecDialog, self).__init__(parent)
+ self.setupUi(self)
+
+ self.buttonBox.button(QDialogButtonBox.Close).setEnabled(False)
+ self.buttonBox.button(QDialogButtonBox.Cancel).setDefault(True)
+
+ self.__pyvenv = pyvenv
+ self.__targetDir = targetDir
+ self.__openTarget = openTarget
+ self.__createLog = createLog
+ self.__createScript = createScript
+
+ self.process = None
+ self.__cmd = ""
+
+ if pyvenv:
+ self.__calls = []
+ if interpreter:
+ self.__calls.append((interpreter, ["-m", "venv"]))
+ self.__calls.extend([
+ (sys.executable.replace("w.exe", ".exe"),
+ ["-m", "venv"]),
+ ("python3", ["-m", "venv"]),
+ ("python", ["-m", "venv"]),
+ ])
+ else:
+ self.__calls = [
+ (sys.executable.replace("w.exe", ".exe"),
+ ["-m", "virtualenv"]),
+ ("virtualenv", []),
+ ]
+ self.__callIndex = 0
+ self.__callArgs = []
+
+ def start(self, arguments):
+ """
+ Public slot to start the virtualenv command.
+
+ @param arguments commandline arguments for virtualenv/pyvenv program
+ (list of strings)
+ """
+ if self.__callIndex == 0:
+ # first attempt, add a given python interpreter and do
+ # some other setup
+ self.errorGroup.hide()
+ self.contents.clear()
+ self.errors.clear()
+
+ self.process = QProcess()
+ self.process.readyReadStandardOutput.connect(self.__readStdout)
+ self.process.readyReadStandardError.connect(self.__readStderr)
+ self.process.finished.connect(self.__finish)
+
+ if not self.__pyvenv:
+ for arg in arguments:
+ if arg.startswith("--python="):
+ prog = arg.replace("--python=", "")
+ self.__calls.insert(
+ 0, (prog, ["-m", "virtualenv"]))
+ break
+ self.__callArgs = arguments
+
+ prog, args = self.__calls[self.__callIndex]
+ args.extend(self.__callArgs)
+ self.__cmd = "{0} {1}".format(prog, " ".join(args))
+ self.__logOutput(self.tr("Executing: {0}\n").format(
+ self.__cmd))
+ self.process.start(prog, args)
+ procStarted = self.process.waitForStarted(5000)
+ if not procStarted:
+ self.__logOutput(self.tr("Failed\n\n"))
+ self.__nextAttempt()
+
+ def on_buttonBox_clicked(self, button):
+ """
+ Private slot called by a button of the button box clicked.
+
+ @param button button that was clicked (QAbstractButton)
+ """
+ if button == self.buttonBox.button(QDialogButtonBox.Close):
+ self.accept()
+ elif button == self.buttonBox.button(QDialogButtonBox.Cancel):
+ self.__finish()
+
+ def __finish(self, exitCode, exitStatus, giveUp=False):
+ """
+ Private slot called when the process finished.
+
+ It is called when the process finished or
+ the user pressed the button.
+
+ @param exitCode exit code of the process (integer)
+ @param exitStatus exit status of the process (QProcess.ExitStatus)
+ @keyparam giveUp flag indicating to not start another attempt (boolean)
+ """
+ if self.process is not None and \
+ self.process.state() != QProcess.NotRunning:
+ self.process.terminate()
+ QTimer.singleShot(2000, self.process.kill)
+ self.process.waitForFinished(3000)
+
+ self.buttonBox.button(QDialogButtonBox.Close).setEnabled(True)
+ self.buttonBox.button(QDialogButtonBox.Cancel).setEnabled(False)
+ self.buttonBox.button(QDialogButtonBox.Close).setDefault(True)
+
+ if not giveUp:
+ if exitCode != 0:
+ self.__logOutput(self.tr("Failed\n\n"))
+ if len(self.errors.toPlainText().splitlines()) == 1:
+ self.errors.clear()
+ self.errorGroup.hide()
+ self.__nextAttempt()
+ return
+
+ self.process = None
+
+ if self.__pyvenv:
+ self.__logOutput(self.tr('\npyvenv finished.\n'))
+ else:
+ self.__logOutput(self.tr('\nvirtualenv finished.\n'))
+
+ if os.path.exists(self.__targetDir):
+ if self.__createScript:
+ self.__writeScriptFile()
+
+ if self.__createLog:
+ self.__writeLogFile()
+
+ if self.__openTarget:
+ QDesktopServices.openUrl(QUrl.fromLocalFile(
+ self.__targetDir))
+
+ def __nextAttempt(self):
+ """
+ Private method to start another attempt.
+ """
+ self.__callIndex += 1
+ if self.__callIndex < len(self.__calls):
+ self.start(self.__callArgs)
+ else:
+ if self.__pyvenv:
+ self.__logError(
+ self.tr('No suitable pyvenv program could be'
+ ' started.\n'))
+ else:
+ self.__logError(
+ self.tr('No suitable virtualenv program could be'
+ ' started.\n'))
+ self.__cmd = ""
+ self.__finish(0, 0, giveUp=True)
+
+ def __readStdout(self):
+ """
+ Private slot to handle the readyReadStandardOutput signal.
+
+ It reads the output of the process, formats it and inserts it into
+ the contents pane.
+ """
+ self.process.setReadChannel(QProcess.StandardOutput)
+
+ while self.process.canReadLine():
+ s = str(self.process.readLine(),
+ Preferences.getSystem("IOEncoding"),
+ 'replace')
+ self.__logOutput(s)
+
+ def __readStderr(self):
+ """
+ Private slot to handle the readyReadStandardError signal.
+
+ It reads the error output of the process and inserts it into the
+ error pane.
+ """
+ self.process.setReadChannel(QProcess.StandardError)
+
+ while self.process.canReadLine():
+ s = str(self.process.readLine(),
+ Preferences.getSystem("IOEncoding"),
+ 'replace')
+ self.__logError(s)
+
+ def __logOutput(self, s):
+ """
+ Private method to log some output.
+
+ @param s output sstring to log (string)
+ """
+ self.contents.insertPlainText(s)
+ self.contents.ensureCursorVisible()
+
+ def __logError(self, s):
+ """
+ Private method to log an error.
+
+ @param s error string to log (string)
+ """
+ self.errorGroup.show()
+ self.errors.insertPlainText(s)
+ self.errors.ensureCursorVisible()
+
+ def __writeLogFile(self):
+ """
+ Private method to write a log file to the virtualenv directory.
+ """
+ outtxt = self.contents.toPlainText()
+ if self.__pyvenv:
+ logFile = os.path.join(self.__targetDir, "pyvenv.log")
+ else:
+ logFile = os.path.join(self.__targetDir, "virtualenv.log")
+ self.__logOutput(self.tr("\nWriting log file '{0}'.\n")
+ .format(logFile))
+
+ try:
+ f = open(logFile, "w", encoding="utf-8")
+ f.write(self.tr("Output:\n"))
+ f.write(outtxt)
+ errtxt = self.errors.toPlainText()
+ if errtxt:
+ f.write("\n")
+ f.write(self.tr("Errors:\n"))
+ f.write(errtxt)
+ f.close()
+ except (IOError, OSError) as err:
+ self.__logError(
+ self.tr("""The logfile '{0}' could not be written.\n"""
+ """Reason: {1}\n""").format(logFile, str(err)))
+ self.__logOutput(self.tr("Done.\n"))
+
+ def __writeScriptFile(self):
+ """
+ Private method to write a script file to the virtualenv directory.
+ """
+ if self.__pyvenv:
+ basename = "create_pyvenv"
+ else:
+ basename = "create_virtualenv"
+ if isWindowsPlatform():
+ script = os.path.join(self.__targetDir, basename + ".bat")
+ txt = self.__cmd
+ else:
+ script = os.path.join(self.__targetDir, basename + ".sh")
+ txt = "#!/usr/bin/env sh\n\n" + self.__cmd
+
+ self.__logOutput(self.tr("\nWriting script file '{0}'.\n")
+ .format(script))
+
+ try:
+ f = open(script, "w", encoding="utf-8")
+ f.write(txt)
+ f.close()
+ except (IOError, OSError) as err:
+ self.__logError(
+ self.tr("""The script file '{0}' could not be written.\n"""
+ """Reason: {1}\n""").format(script, str(err)))
+ self.__logOutput(self.tr("Done.\n"))
