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#/*##########################################################################
# Copyright (C) 2004-2014 V.A. Sole, European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#############################################################################*/
__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import sys
import os
import subprocess
import time
from PyMca5.PyMcaGui import PyMcaQt as qt
class SubprocessLogWidget(qt.QWidget):
sigSubprocessLogWidgetSignal = qt.pyqtSignal(object)
def __init__(self, parent=None, args=None):
qt.QWidget.__init__(self, parent)
self.setWindowTitle("Subprocess Log Widget")
self.mainLayout = qt.QVBoxLayout(self)
self._p = None
self.__timer = qt.QTimer()
self._args = args
self.__timer.timeout.connect(self._timerSlot)
self.logWidget = qt.QTextEdit(self)
self.logWidget.setReadOnly(True)
self.mainLayout.addWidget(self.logWidget)
def setSubprocessArgs(self, args):
self._args = args
def start(self, args=None, timing=0.1):
if args is None:
if self._args is None:
raise ValueError("Subprocess command not defined")
else:
self._args = args
else:
self._args = args
if timing < 1:
timing = int(timing * 1000) # it should be in milliseconds
else:
timing = int(timing)
self._startTimer(timing=timing)
def stop(self):
if self.isSubprocessRunning():
#print("MESSAGE TO KILL PROCESS")
#print("HOW TO KILL IT IN A GOOD WAY?")
self._p.kill()
def isSubprocessRunning(self):
running = False
if self._p is not None:
if self._p.poll() is None:
running = True
return running
def _startTimer(self, timing=0.1):
if timing < 1:
timing = int(timing * 1000) # it should be in milliseconds
else:
timing = int(timing)
if self._args is None:
raise ValueError("Subprocess command not defined")
self._p = subprocess.Popen(self._args,
bufsize=0,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
universal_newlines=True)
ddict = {}
ddict["subprocess"] = self._p
ddict["event"] = "ProcessStarted"
self.sigSubprocessLogWidgetSignal.emit(ddict)
self.__timer.setInterval(timing)
self.__timer.start()
def _timerSlot(self):
ddict = {}
ddict["subprocess"] = self._p
if self._p.poll() is None:
# process did not finish yet
line = self._p.stdout.readline()
if len(line) > 1:
self.logWidget.append(line[:-1])
qApp = qt.QApplication.instance()
qApp.processEvents()
ddict["event"] = "ProcessRunning"
else:
self.__timer.stop()
returnCode = self._p.returncode
ddict['event'] = "ProcessFinished"
ddict['code'] = returnCode
ddict["message"] = []
if returnCode == 0:
line = self._p.stdout.readline()
while len(line) > 1:
self.logWidget.append(line[:-1])
line = self._p.stdout.readline()
else:
line = self._p.stderr.readline()
while len(line) > 1:
ddict["message"].append(line)
self.logWidget.append(line[:-1])
line = self._p.stderr.readline()
self._p = None
self.sigSubprocessLogWidgetSignal.emit(ddict)
def clear(self):
self.logWidget.clear()
def append(self, text):
self.logWidget.append(text)
def closeEvent(self, event):
if self._p is not None:
try:
self.stop()
except:
# this may happen if the process finished in the mean time
pass
qt.QWidget.closeEvent(self, event)
if __name__ == "__main__":
def slot(ddict):
print(ddict)
# show the command on the log widget
if len(sys.argv) == 1 and sys.platform.startswith("win"):
scriptFile = r"C:\Windows\System32\whoami.exe"
args = [r"C:\Windows\System32\whoami.exe"]
elif len(sys.argv) > 1:
args = sys.argv[1:]
else:
print("Usage:")
print("%s SubprocessLogWidget.py executable_path [arguments]" % (sys.executable,))
print("")
print("Example:")
print("")
print("%s -m PyMca5.PyMca.SubprocessLogWidget %s -m PyMca5.PyMca.SubprocessLogWidget" % (sys.executable, sys.executable))
sys.exit(0)
text = "%s" % args[0]
if len(args) > 1:
for arg in args[1:]:
text += " %s" % arg
app = qt.QApplication([])
logWidget = SubprocessLogWidget()
logWidget.setMinimumWidth(400)
logWidget.sigSubprocessLogWidgetSignal.connect(slot)
logWidget.clear()
logWidget.show()
logWidget.raise_()
logWidget.append(text)
logWidget.start(args=args)
app.exec_()
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