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# $Header: /var/local/cvsroot/4Suite/Ft/Xml/Lib/_4xupdate.py,v 1.15 2004/10/16 20:41:54 uogbuji Exp $
"""
Implementation of '4xupdate' command
(functions defined here are used by the Ft.Lib.CommandLine framework)
Copyright 2004 Fourthought, Inc. (USA).
Detailed license and copyright information: http://4suite.org/COPYRIGHT
Project home, documentation, distributions: http://4suite.org/
"""
import sys, cStringIO
from Ft.Lib import UriException, CloseStream
from Ft.Lib.CommandLine.CommandLineUtil import SourceArgToInputSource
from Ft.Xml import __version__
from Ft.Xml import Domlette, XUpdate
from Ft.Xml.InputSource import DefaultFactory
__doc__ = """4XUpdate command-line application"""
def Run(options, args):
out_file = options.has_key('out-file') \
and open(options['out-file'], 'wb') or sys.stdout
source_arg = args['source-uri']
xupdate_arg = args['xupdate-uri']
try:
source_isrc = SourceArgToInputSource(source_arg, factory=DefaultFactory)
xupdate_isrc = SourceArgToInputSource(xupdate_arg, factory=DefaultFactory)
except Exception, e:
sys.stderr.write(str(e)+'\n')
sys.stderr.flush()
return
try:
xml_reader = Domlette.NonvalidatingReader
xupdate_reader = XUpdate.Reader()
processor = XUpdate.Processor()
source_doc = xml_reader.parse(source_isrc)
CloseStream(source_isrc, quiet=True)
compiled_xupdate = xupdate_reader.fromSrc(xupdate_isrc)
CloseStream(xupdate_isrc, quiet=True)
processor.execute(source_doc, compiled_xupdate)
Domlette.Print(source_doc, stream=out_file)
except Exception, e:
import traceback
traceback.print_exc(1000, sys.stderr)
raise
try:
if out_file.isatty():
out_file.flush()
sys.stderr.write('\n')
else:
out_file.close()
except (IOError, ValueError):
pass
return
from Ft.Lib.CommandLine import Options, CommandLineApp, Arguments, Command
class XUpdateCommandLineApp(CommandLineApp.CommandLineApp):
def __init__(self):
CommandLineApp.CommandLineApp.__init__(
self,
'4xupdate',
'4XUpdate version %s' % __version__,
__doc__,
[],
ourOptions = Options.Options([
Options.Option('V',
'version',
'Display program version and exit',
),
Options.Option('o',
'out-file=FILE',
'Write the result to the given output file',
),
]),
enableShowCommands = 0
)
self.function = Run
self.arguments = [
Arguments.RequiredArgument('source-uri',
'The URI of the XML document to which to apply the XUpdate, or "-" to indicate standard input.',
str),
Arguments.RequiredArgument('xupdate-uri',
'The URI of the XML document containing XUpdate instructions, or "-" to indicate standard input.',
str),
]
def validate_options(self, options):
if options.has_key('version'):
print '4XUpdate, from 4Suite %s' % __version__
return
else:
return Command.Command.validate_options(self, options)
def validate_arguments(self, args):
msg = ''
if len(args) < 2:
msg = 'A source URI argument and an XUpdate URI argument are required.'
elif len(filter(lambda arg: arg=='-', args)) > 1:
msg = 'Standard input may be used for only 1 document.'
if msg:
raise SystemExit('%s\nSee "4xupdate -h" for usage info.' % msg)
else:
return Command.Command.validate_arguments(self, args)
def Register():
return XUpdateCommandLineApp()
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