import re

# Write the config.c file

never = ['marshal', '__main__', '__builtin__', 'sys', 'exceptions']

def makeconfig(infp, outfp, modules, with_ifdef=0):

    m1 = re.compile('-- ADDMODULE MARKER 1 --')

    m2 = re.compile('-- ADDMODULE MARKER 2 --')

    while 1:

        line = infp.readline()

        if not line: break

        outfp.write(line)

        if m1 and m1.search(line):

            m1 = None

            for mod in modules:

                if mod in never:

                    continue

                if with_ifdef:

                    outfp.write("#ifndef init%s\n"%mod)

                outfp.write('extern void init%s(void);\n' % mod)

                if with_ifdef:

                    outfp.write("#endif\n")

        elif m2 and m2.search(line):

            m2 = None

            for mod in modules:

                if mod in never:

                    continue

                outfp.write('\t{"%s", init%s},\n' %

                            (mod, mod))

    if m1:

        sys.stderr.write('MARKER 1 never found\n')

    elif m2:

        sys.stderr.write('MARKER 2 never found\n')

# Test program.

def test():

    import sys

    if not sys.argv[3:]:

        print 'usage: python makeconfig.py config.c.in outputfile',

        print 'modulename ...'

        sys.exit(2)

    if sys.argv[1] == '-':

        infp = sys.stdin

    else:

        infp = open(sys.argv[1])

    if sys.argv[2] == '-':

        outfp = sys.stdout

    else:

        outfp = open(sys.argv[2], 'w')

    makeconfig(infp, outfp, sys.argv[3:])

    if outfp != sys.stdout:

        outfp.close()

    if infp != sys.stdin:

        infp.close()

if __name__ == '__main__':

    test()