文件操作 - ksvalidator

文件: /usr/bin/ksvalidator

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#!/usr/bin/python
#
# Chris Lumens <clumens@redhat.com>
#
# Copyright 2005-2014 Red Hat, Inc.
#
# This copyrighted material is made available to anyone wishing to use, modify,
# copy, or redistribute it subject to the terms and conditions of the GNU
# General Public License v.2.  This program is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY expressed or implied, including the
# implied warranties 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.  Any Red Hat
# trademarks that are incorporated in the source code or documentation are not
# subject to the GNU General Public License and may only be used or replicated
# with the express permission of Red Hat, Inc. 
#

import argparse
import os
import sys
import warnings
import tempfile
import urlgrabber
import shutil
from pykickstart.errors import KickstartError, KickstartParseError, KickstartValueError, KickstartVersionError
from pykickstart.parser import KickstartParser, preprocessKickstart
from pykickstart.version import DEVEL, makeVersion, versionMap

import gettext
gettext.install("pykickstart", unicode=True)
_ = lambda x: gettext.ldgettext("pykickstart", x)

def cleanup(dest, fn=None, exitval=1):
    shutil.rmtree(dest)

# Don't care if this file doesn't exist.
    if fn is not None:
        try:
            os.remove(fn)
        except Exception:
            pass

sys.exit(exitval)

op = argparse.ArgumentParser(usage="%(prog)s [options] ksfile")
op.add_argument("ksfile", nargs="?",
                help=_("filename or URL to read from"))
op.add_argument("-e", "--firsterror", dest="firsterror", action="store_true",
                default=False, help=_("halt after the first error or warning"))
op.add_argument("-i", "--followincludes", dest="followincludes",
                action="store_true", default=False,
                help=_("parse include files when %%include is seen"))
op.add_argument("-l", "--listversions", dest="listversions", action="store_true",
                default=False,
                help=_("list the available versions of kickstart syntax"))
op.add_argument("-v", "--version", dest="version", default=DEVEL,
                help=_("version of kickstart syntax to validate against"))

opts = op.parse_args(sys.argv[1:])

if opts.listversions:
    for key in sorted(versionMap.keys()):
        print(key)

sys.exit(1)

if not opts.ksfile:
    op.print_usage()
    sys.exit(1)

destdir = tempfile.mkdtemp("", "ksvalidator-tmp-", "/tmp")
try:
    f = urlgrabber.urlgrab(opts.ksfile, filename="%s/ks.cfg" % destdir)
except urlgrabber.grabber.URLGrabError, e:
    print(_("Error reading %s:\n%s") % (opts.ksfile, e))
    cleanup(destdir)

try:
    handler = makeVersion(opts.version)
except KickstartVersionError:
    print(_("The version %s is not supported by pykickstart") % opts.version)
    cleanup(destdir)

ksparser = KickstartParser(handler, followIncludes=opts.followincludes,
                           errorsAreFatal=opts.firsterror)

# turn DeprecationWarnings into errors
warnings.filterwarnings("error")

processedFile = None

try:
    processedFile = preprocessKickstart(f)
    ksparser.readKickstart(processedFile)
    cleanup(destdir, processedFile, exitval=0)
except DeprecationWarning as msg:
    print(_("File uses a deprecated option or command.\n%s") % msg)
    cleanup(destdir, processedFile)
except (KickstartParseError, KickstartValueError) as msg:
    print(msg)
    cleanup(destdir, processedFile)
except KickstartError:
    print(_("General kickstart error in input file"))
    cleanup(destdir, processedFile)
except Exception as e:
    print(_("General error in input file:  %s") % e)
    cleanup(destdir, processedFile)

文件操作 - ksvalidator

文件: /usr/bin/ksvalidator

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