1

#!/usr/bin/env python

     2

# -*- coding: utf-8 -*-

     3

     4

#This file is part of Beremiz, a Integrated Development Environment for

     5

#programming IEC 61131-3 automates supporting plcopen standard and CanFestival. 

     6

#

     7

#Copyright (C) 2007: Edouard TISSERANT and Laurent BESSARD

     8

#

     9

#See COPYING file for copyrights details.

    10

#

    11

#This library is free software; you can redistribute it and/or

    12

#modify it under the terms of the GNU General Public

    13

#License as published by the Free Software Foundation; either

    14

#version 2.1 of the License, or (at your option) any later version.

    15

#

    16

#This library is distributed in the hope that it will be useful,

    17

#but WITHOUT ANY WARRANTY; without even the implied warranty of

    18

#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    19

#General Public License for more details.

    20

#

    21

#You should have received a copy of the GNU General Public

    22

#License along with this library; if not, write to the Free Software

    23

#Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    24

    25

    26

import time

    27

import wx

    28

import subprocess, ctypes

    29

import threading

    30

import os

    31

import signal

    32

    33

    34

class outputThread(threading.Thread):

    35

    """

    36

    Thread is used to print the output of a command to the stdout

    37

    """

    38

    def __init__(self, Proc, fd, callback=None, endcallback=None):

    39

        threading.Thread.__init__(self)

    40

        self.killed = False

    41

        self.finished = False

    42

        self.retval = None

    43

        self.Proc = Proc

    44

        self.callback = callback

    45

        self.endcallback = endcallback

    46

        self.fd = fd

    47

    48

    def run(self):

    50

        self.retval = None

    54

        while self.retval is None and not self.killed :

    55

            self.retval = self.Proc.poll()

    56

            outchunk = self.fd.readline()

    60

        if self.endcallback:

    61

            try:

    62

            	err = self.Proc.wait()

    63

            except:

    64

                err = self.retval

    65

            self.finished = True

    66

            wx.CallAfter(self.endcallback, self.Proc.pid, err)

    67

    68

class ProcessLogger:

    69

    def __init__(self, logger, Command, finish_callback=None, no_stdout=False, no_stderr=False, no_gui=True):

    70

        self.logger = logger

    71

        self.Command_str = Command

    72

        self.Command = []

    73

        for i,word in enumerate(Command.replace("'",'"').split('"')):

    74

            if i % 2 == 0:

    75

                word = word.strip()

    76

                if len(word) > 0:

    77

                    self.Command.extend(word.split())

    78

            else:

    79

                self.Command.append(word)

    80

    81

        self.finish_callback = finish_callback

    82

        self.no_stdout = no_stdout

    83

        self.no_stderr = no_stderr

    84

        self.startupinfo = None

    85

        self.errlen = 0

    86

        self.outlen = 0

    87

        self.exitcode = None

    88

        self.outdata = ""

    89

        self.errdata = ""

    90

        self.finished = False

    91

    92

        popenargs= {

    93

               "cwd":os.getcwd(),

    94

               "stdin":subprocess.PIPE, 

    95

               "stdout":subprocess.PIPE, 

    96

               "stderr":subprocess.PIPE}

    97

        if no_gui == True and wx.Platform == '__WXMSW__':

    98

            self.startupinfo = subprocess.STARTUPINFO()

    99

            self.startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW

   100

            popenargs["startupinfo"] = self.startupinfo

   101

        elif wx.Platform == '__WXGTK__':

   102

            popenargs["shell"] = False  #True

   103

   104

        self.Proc = subprocess.Popen( self.Command, **popenargs )

   105

   106

        self.outt = outputThread(

   107

                      self.Proc,

   108

                      self.Proc.stdout,

   109

                      self.output,

   110

                      self.finish)

   111

   112

        self.outt.start()

   113

   114

        self.errt = outputThread(

   115

                      self.Proc,

   116

                      self.Proc.stderr,

   117

                      self.errors)

   118

#

   119

        self.errt.start()	

   120

   121

    def output(self,v):

   122

        self.outdata += v

   123

        self.outlen += 1

   124

        if not self.no_stdout:

   125

            wx.CallAfter(self.logger.write,v)

   126

   127

    def errors(self,v):

   128

        self.errdata += v

   129

        self.errlen += 1

   130

        if not self.no_stderr:

   131

            wx.CallAfter(self.logger.write_warning,v)

   132

   133

    def finish(self, pid,ecode):

   134

        self.finished = True

   135

        self.exitcode = ecode

   136

        if self.exitcode != 0:

   137

            self.logger.write(self.Command_str + "\n")

   138

            self.logger.write_warning("exited with status %s (pid %s)\n"%(str(ecode),str(pid)))

   139

        if self.finish_callback is not None:

   140

            self.finish_callback(self,ecode,pid)

   141

   142

    def kill(self):

   143

        self.outt.killed = True

   144

        self.errt.killed = True

   145

        if wx.Platform == '__WXMSW__':

   146

            PROCESS_TERMINATE = 1

   147

            handle = ctypes.windll.kernel32.OpenProcess(PROCESS_TERMINATE, False, self.Proc.pid)

   148

            ctypes.windll.kernel32.TerminateProcess(handle, -1)

   149

            ctypes.windll.kernel32.CloseHandle(handle)

   150

        else:

   151

            try:

   152

                os.kill(self.Proc.pid, signal.SIGTERM)

   153

            except:

   154

                pass

   155

   156

    def spin(self, timeout=None, out_limit=None, err_limit=None, keyword = None, kill_it = True):

   157

        count = 0

   158

        while not self.finished:

   159

            if err_limit and self.errlen > err_limit:

   160

                break

   161

            if out_limit and self.outlen > out_limit:

   162

                break

   163

            if timeout:

   164

                if count > timeout:

   165

                    break

   166

                count += 1

   167

            if keyword and self.outdata.find(keyword)!=-1:

   168

                    break

   169

            wx.Yield()

   170

            time.sleep(0.01)

   171

   172

        if not self.outt.finished and kill_it:

   173

            self.kill()

   174

   175

        return [self.exitcode, self.outdata, self.errdata]

   176