#! /usr/bin/env python

# mkreal

#

# turn a symlink to a directory into a real directory

import sys

import os

from stat import *

join = os.path.join

error = 'mkreal error'

BUFSIZE = 32*1024

def mkrealfile(name):

    st = os.stat(name) # Get the mode

    mode = S_IMODE(st[ST_MODE])

    linkto = os.readlink(name) # Make sure again it's a symlink

    f_in = open(name, 'r') # This ensures it's a file

    os.unlink(name)

    f_out = open(name, 'w')

    while 1:

        buf = f_in.read(BUFSIZE)

        if not buf: break

        f_out.write(buf)

    del f_out # Flush data to disk before changing mode

    os.chmod(name, mode)

def mkrealdir(name):

    st = os.stat(name) # Get the mode

    mode = S_IMODE(st[ST_MODE])

    linkto = os.readlink(name)

    files = os.listdir(name)

    os.unlink(name)

    os.mkdir(name, mode)

    os.chmod(name, mode)

    linkto = join(os.pardir, linkto)

    #

    for filename in files:

        if filename not in (os.curdir, os.pardir):

            os.symlink(join(linkto, filename), join(name, filename))

def main():

    sys.stdout = sys.stderr

    progname = os.path.basename(sys.argv[0])

    if progname == '-c': progname = 'mkreal'

    args = sys.argv[1:]

    if not args:

        print 'usage:', progname, 'path ...'

        sys.exit(2)

    status = 0

    for name in args:

        if not os.path.islink(name):

            print progname+':', name+':', 'not a symlink'

            status = 1

        else:

            if os.path.isdir(name):

                mkrealdir(name)

            else:

                mkrealfile(name)

    sys.exit(status)

if __name__ == '__main__':

    main()