--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/CondaInterface/Conda.py Sun Feb 03 16:59:36 2019 +0100
@@ -0,0 +1,164 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2019 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Package implementing the conda GUI logic.
+"""
+
+from __future__ import unicode_literals
+try:
+ str = unicode # __IGNORE_EXCEPTION__
+except NameError:
+ pass
+
+import json
+import os
+
+from PyQt5.QtCore import QObject, QProcess
+
+from E5Gui import E5MessageBox
+
+import Globals
+import Preferences
+
+from . import rootPrefix
+
+
+class Conda(QObject):
+ """
+ Class implementing the conda GUI logic.
+ """
+ def __init__(self, parent=None):
+ """
+ Constructor
+
+ @param parent parent
+ @type QObject
+ """
+ super(Conda, self).__init__(parent)
+
+ self.__ui = parent
+
+ def createCondaEnvironment(self, arguments):
+ """
+ Public method to create a conda environment.
+
+ @param arguments list of command line arguments
+ @type list of str
+ @return tuple containing a flag indicating success, the directory of
+ the created environment (aka. prefix) and the corresponding Python
+ interpreter
+ @rtype tuple of (bool, str, str)
+ """
+ from .CondaExecDialog import CondaExecDialog
+
+ args = ["create", "--json", "--yes"] + arguments
+
+ dlg = CondaExecDialog("create", self.__ui)
+ dlg.start(args)
+ dlg.exec_()
+ ok, resultDict = dlg.getResult()
+
+ if ok:
+ if "actions" in resultDict and \
+ "PREFIX" in resultDict["actions"]:
+ prefix = resultDict["actions"]["PREFIX"]
+ elif "prefix" in resultDict:
+ prefix = resultDict["prefix"]
+ elif "dst_prefix" in resultDict:
+ prefix = resultDict["dst_prefix"]
+ else:
+ prefix = ""
+
+ # determine Python executable
+ if prefix:
+ pathPrefixes = [
+ prefix,
+ rootPrefix()
+ ]
+ else:
+ pathPrefixes = [
+ rootPrefix()
+ ]
+ for pathPrefix in pathPrefixes:
+ if Globals.isWindowsPlatform():
+ python = os.path.join(pathPrefix, "python.exe")
+ else:
+ python = os.path.join(pathPrefix, "bin", "python")
+ if os.path.exists(python):
+ break
+ else:
+ python = ""
+
+ return True, prefix, python
+ else:
+ return False, "", ""
+
+ def removeCondaEnvironment(self, name="", prefix=""):
+ """
+ Public method to remove a conda environment.
+
+ @param name name of the environment
+ @type str
+ @param prefix prefix of the environment
+ @type str
+ @return flag indicating success
+ @rtype bool
+ @exception RuntimeError raised to indicate an error in parameters
+
+ Note: only one of name or prefix must be given.
+ """
+ if name and prefix:
+ raise RuntimeError("Only one of 'name' or 'prefix' must be given.")
+
+ if not name and not prefix:
+ raise RuntimeError("One of 'name' or 'prefix' must be given.")
+
+ args = [
+ "remove",
+ "--json",
+ "--quiet",
+ "--all",
+ ]
+ if name:
+ args.extend(["--name", name])
+ elif prefix:
+ args.extend(["--prefix", prefix])
+
+ exe = Preferences.getConda("CondaExecutable")
+ if not exe:
+ exe = "conda"
+
+ proc = QProcess()
+ proc.start(exe, args)
+ if not proc.waitForStarted(15000):
+ E5MessageBox.critical(
+ self.__ui,
+ self.tr("conda remove"),
+ self.tr("""The conda executable could not be started."""))
+ return False
+ else:
+ proc.waitForFinished(15000)
+ output = str(proc.readAllStandardOutput(),
+ Preferences.getSystem("IOEncoding"),
+ 'replace').strip()
+ try:
+ jsonDict = json.loads(output)
+ except Exception:
+ E5MessageBox.critical(
+ self.__ui,
+ self.tr("conda remove"),
+ self.tr("""The conda executable returned invalid data."""))
+ return False
+
+ if "error" in jsonDict:
+ E5MessageBox.critical(
+ self.__ui,
+ self.tr("conda remove"),
+ self.tr("<p>The conda executable returned an error.</p>"
+ "<p>{0}</p>").format(jsonDict["message"]))
+ return False
+
+ return jsonDict["success"]
