#! /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()