--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/CondaInterface/CondaExecDialog.py Sun Jan 27 19:52:37 2019 +0100
@@ -0,0 +1,226 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a dialog to show the output of a conda execution.
+"""
+
+from __future__ import unicode_literals
+try:
+ str = unicode
+except NameError:
+ pass
+
+import json
+
+from PyQt5.QtCore import pyqtSlot, QProcess, QTimer
+from PyQt5.QtWidgets import QDialog, QDialogButtonBox, QAbstractButton
+
+from E5Gui import E5MessageBox
+
+from .Ui_CondaExecDialog import Ui_CondaExecDialog
+
+import Preferences
+
+
+class CondaExecDialog(QDialog, Ui_CondaExecDialog):
+ """
+ Class documentation goes here.
+ """
+ def __init__(self, configuration, venvManager, parent=None):
+ """
+ Constructor
+
+ @param parent reference to the parent widget
+ @type QWidget
+ """
+ super(CondaExecDialog, self).__init__(parent)
+ self.setupUi(self)
+
+ self.__venvName = configuration["logicalName"]
+ self.__venvManager = venvManager
+
+ self.__process = None
+ self.__condaExe = Preferences.getConda("CondaExecutable")
+ if not self.__condaExe:
+ self.__condaExe = "conda"
+
+ @pyqtSlot(QAbstractButton)
+ def on_buttonBox_clicked(self, button):
+ """
+ Private slot called by a button of the button box clicked.
+
+ @param button button that was clicked
+ @type QAbstractButton
+ """
+ if button == self.buttonBox.button(QDialogButtonBox.Close):
+ self.accept()
+ elif button == self.buttonBox.button(QDialogButtonBox.Cancel):
+ self.__finish()
+
+ def start(self, arguments):
+ """
+ Public slot to start the conda command.
+
+ @param arguments commandline arguments for conda program
+ @type list of str
+ """
+ self.errorGroup.hide()
+ self.progressLabel.hide()
+ self.progressBar.hide()
+
+ self.contents.clear()
+ self.errors.clear()
+ self.progressLabel.clear()
+ self.progressBar.setValue(0)
+
+ self.__bufferedStdout = None
+ self.__json = "--json" in arguments
+ self.__firstProgress = True
+
+ self.__process = QProcess()
+ self.__process.readyReadStandardOutput.connect(self.__readStdout)
+ self.__process.readyReadStandardError.connect(self.__readStderr)
+ self.__process.finished.connect(self.__finish)
+
+ self.__process.start(self.__condaExe, arguments)
+ procStarted = self.__process.waitForStarted(5000)
+ if not procStarted:
+ E5MessageBox.critical(
+ self,
+ self.tr("Conda Execution"),
+ self.tr("""The conda executable could not be started. Is it"""
+ """ configured correctly?"""))
+ self.__finish(1, 0)
+ else:
+ self.__logOutput(self.tr("Operation started.\n"))
+
+ 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)
+
+ self.__logOutput(self.tr("Operation finished.\n"))
+ if self.__json:
+ if self.__bufferedStdout:
+ try:
+ jsonDict = json.loads(self.__bufferedStdout)
+ except Exception as error:
+ self.__logError(str(error))
+ return
+
+ if "success" in jsonDict and jsonDict["success"]:
+ if "prefix" in jsonDict:
+ prefix = jsonDict["prefix"]
+ elif "dst_prefix" in jsonDict:
+ prefix = jsonDict["dst_prefix"]
+ else:
+ prefix = ""
+ self.__venvManager.addVirtualEnv(self.__venvName,
+ prefix,
+ isConda=True)
+
+ def __progressLabelString(self, text):
+ """
+ Private method to process a string and format it for the progress
+ label.
+
+ @param text text to be processed
+ @type str
+ @return formatted progress label string
+ @rtype str
+ """
+ parts = text.split("|")
+ return self.tr("{0} (Size: {1})".format(parts[0].strip(),
+ parts[1].strip()))
+
+ 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.
+ """
+ all_stdout = str(self.__process.readAllStandardOutput(),
+ Preferences.getSystem("IOEncoding"),
+ 'replace')
+ all_stdout = all_stdout.replace("\x00", "")
+ if self.__json:
+ for stdout in all_stdout.splitlines():
+ try:
+ jsonDict = json.loads(stdout.replace("\x00", "").strip())
+ if "progress" in jsonDict:
+ self.progressLabel.setText(
+ self.__progressLabelString(jsonDict["fetch"]))
+ self.progressBar.setValue(
+ int(jsonDict["progress"] * 100))
+ if self.__firstProgress:
+ self.progressLabel.show()
+ self.progressBar.show()
+ self.__firstProgress = False
+ else:
+ if self.__bufferedStdout is None:
+ self.__bufferedStdout = stdout
+ else:
+ self.__bufferedStdout += stdout
+ except (TypeError, ValueError):
+ if self.__bufferedStdout is None:
+ self.__bufferedStdout = stdout
+ else:
+ self.__bufferedStdout += stdout
+ else:
+ self.__logOutput(all_stdout)
+
+ 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():
+ stderr = str(self.__process.readLine(),
+ Preferences.getSystem("IOEncoding"),
+ 'replace')
+ self.__logError(stderr)
+
+ def __logOutput(self, stdout):
+ """
+ Private method to log some output.
+
+ @param stdout output string to log
+ @type str
+ """
+ self.contents.insertPlainText(stdout)
+ self.contents.ensureCursorVisible()
+
+ def __logError(self, stderr):
+ """
+ Private method to log an error.
+
+ @param stderr error string to log
+ @type str
+ """
+ self.errorGroup.show()
+ self.errors.insertPlainText(stderr)
+ self.errors.ensureCursorVisible()
