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# This file is part of Buildbot.  Buildbot is free software: you can 

# redistribute it and/or modify it under the terms of the GNU General Public 

# License as published by the Free Software Foundation, version 2. 

# 

# This program is distributed in the hope that it will be useful, but WITHOUT 

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 

# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more 

# details. 

# 

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

# this program; if not, write to the Free Software Foundation, Inc., 51 

# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 

# 

# Copyright Buildbot Team Members 

 

import os 

 

from twisted.python import log 

from twisted.python.procutils import which 

from twisted.python import runtime 

 

def getCommand(name): 

    possibles = which(name) 

    if not possibles: 

        raise RuntimeError("Couldn't find executable for '%s'" % name) 

    # 

    # Under windows, if there is more than one executable "thing" 

    # that matches (e.g. *.bat, *.cmd and *.exe), we not just use 

    # the first in alphabet (*.bat/*.cmd) if there is a *.exe. 

    # e.g. under MSysGit/Windows, there is both a git.cmd and a 

    # git.exe on path, but we want the git.exe, since the git.cmd 

    # does not seem to work properly with regard to errors raised 

    # and catched in buildbot slave command (vcs.py) 

    # 

    if runtime.platformType  == 'win32' and len(possibles) > 1: 

        possibles_exe = which(name + ".exe") 

        if possibles_exe: 

            return possibles_exe[0] 

    return possibles[0] 

 

# this just keeps pyflakes happy on non-Windows systems 

if runtime.platformType != 'win32': 

    WindowsError = RuntimeError 

 

if runtime.platformType  == 'win32': 

    def rmdirRecursive(dir): 

        """This is a replacement for shutil.rmtree that works better under 

        windows. Thanks to Bear at the OSAF for the code.""" 

        if not os.path.exists(dir): 

            return 

 

        if os.path.islink(dir) or os.path.isfile(dir): 

            os.remove(dir) 

            return 

 

        # Verify the directory is read/write/execute for the current user 

        os.chmod(dir, 0700) 

 

        # os.listdir below only returns a list of unicode filenames if the parameter is unicode 

        # Thus, if a non-unicode-named dir contains a unicode filename, that filename will get garbled. 

        # So force dir to be unicode. 

        if not isinstance(dir, unicode): 

            try: 

                dir = unicode(dir, "utf-8") 

            except: 

                log.err("rmdirRecursive: decoding from UTF-8 failed (ignoring)") 

 

        try: 

            list = os.listdir(dir) 

        except WindowsError, e: 

            msg = ("rmdirRecursive: unable to listdir %s (%s). Trying to " 

                   "remove like a dir" % (dir, e.strerror.decode('mbcs'))) 

            log.msg(msg.encode('utf-8')) 

            os.rmdir(dir) 

            return 

 

        for name in list: 

            full_name = os.path.join(dir, name) 

            # on Windows, if we don't have write permission we can't remove 

            # the file/directory either, so turn that on 

            if os.name == 'nt': 

                if not os.access(full_name, os.W_OK): 

                    # I think this is now redundant, but I don't have an NT 

                    # machine to test on, so I'm going to leave it in place 

                    # -warner 

                    os.chmod(full_name, 0600) 

 

            if os.path.islink(full_name): 

                os.remove(full_name) # as suggested in bug #792 

            elif os.path.isdir(full_name): 

                rmdirRecursive(full_name) 

            else: 

                if os.path.isfile(full_name): 

                    os.chmod(full_name, 0700) 

                os.remove(full_name) 

        os.rmdir(dir) 

else: 

    # use rmtree on POSIX 

    import shutil 

    rmdirRecursive = shutil.rmtree