#!/usr/bin/python
""" extract
   A text utility for munging babel impls and related files.
   Author: Benjamin Allan
   Org:	Sandia National Laboratories, Livermore
   Date: 11/2006.
   License: GPL. Of course this doesn't affect the files that
	are processed by this utility.

The extract algorithm is:
	Load inputFile
	Identify input sections matching sourceKey and extract symbols
		from sourcekey.begin(symbol)/sourcekey.end(symbol) pairs.
		Errors if sections are not well-formed.
	Foreach matching key, generate or append a splice file if not a dryrun.

"""
import sys
import os.path
import distutils.sysconfig

def warnMessage(message, opts):
    print "Warning: " , message
    if opts.fatal:
        sys.exit(3)

class Usage(Exception):
    def __init__(self, msg):
        self.msg = msg

# FIX BOCCA PATH. We end up doing this in every python script. maintenance hassle.
#
bocca_self = os.path.realpath(sys.argv[0])
bocca_tools_bin = os.path.dirname(bocca_self)
libdirname = distutils.sysconfig.get_config_var('LIB')
if libdirname is None: libdirname = 'lib' # for python versions < 2.5

try:
    boccalibPath = os.path.abspath(os.path.join(bocca_tools_bin, '..', libdirname,
                                    'python' + distutils.sysconfig.get_python_version(),
                                    'site-packages', 'boccalib'))
    subcmdModulePath = os.path.join(boccalibPath, 'cct')
    sys.path.append(boccalibPath)
    sys.path.append(subcmdModulePath)
except:
    print 'bocca: Cannot locate bocca module path.'
    exit(1)

# print >> sys.stderr, "python path is:"
# print >> sys.stderr, sys.path

import cct._modulePath
cct._modulePath.setModulePath(boccalibPath)

# now we can import ok.
from splicers.ExtractData import *
from splicers.Source import *

def main(argv=None):
    if argv is None:
        argv = sys.argv
    try:
        opts, args = parseargs(argv)

        if not validateOpts(opts):
            print "Got invalid options somehow"
            return 1

        if opts.dbg :
            printopts(opts)
    
        inName = opts.inputFile
        if inName == "unset":
            inName = args[1]
        if len(opts.vpathDir) > 0:
            inName = os.path.join(opts.vpathDir , inName)

        source = Source()
        source.loadFile(inName, opts.sourceKey)
        
        return source.writeExtracts(opts.sourceKey, opts)

    except Usage, err:
        print >>sys.stderr, err.msg
        print >>sys.stderr, "for help use --help"
        return 2

if __name__ == "__main__":
    sys.exit(main())
