mkreal.py

#! /usr/bin/env python

# mkreal
#
# turn a symlink to a directory into a real directory

importsys
importos
fromstatimport*

join=os.path.join

error='mkreal error'

BUFSIZE=32*1024

defmkrealfile(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')
while1:
buf=f_in.read(BUFSIZE)
ifnotbuf: break
f_out.write(buf)
delf_out# Flush data to disk before changing mode
os.chmod(name, mode)

defmkrealdir(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)
#
forfilenameinfiles:
iffilenamenotin (os.curdir, os.pardir):
os.symlink(join(linkto, filename), join(name, filename))

defmain():
sys.stdout=sys.stderr
progname=os.path.basename(sys.argv[0])
ifprogname=='-c': progname='mkreal'
args=sys.argv[1:]
ifnotargs:
print'usage:', progname, 'path ...'
sys.exit(2)
status=0
fornameinargs:
ifnotos.path.islink(name):
printprogname+':', name+':', 'not a symlink'
status=1
else:
ifos.path.isdir(name):
mkrealdir(name)
else:
mkrealfile(name)
sys.exit(status)

if__name__=='__main__':
main()