Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
linktree.py
#! /usr/bin/env python
# linktree
#
# Make a copy of a directory tree with symbolic links to all files in the
# original tree.
# All symbolic links go to a special symbolic link at the top, so you
# can easily fix things if the original source tree moves.
# See also "mkreal".
#
# usage: mklinks oldtree newtree
import sys, os
LINK = '.LINK' # Name of special symlink at the top.
debug = 0
def main():
if not 3 <= len(sys.argv) <= 4:
print('usage:', sys.argv[0], 'oldtree newtree [linkto]')
return 2
oldtree, newtree = sys.argv[1], sys.argv[2]
if len(sys.argv) > 3:
link = sys.argv[3]
link_may_fail = 1
else:
link = LINK
link_may_fail = 0
if not os.path.isdir(oldtree):
print(oldtree + ': not a directory')
return 1
try:
os.mkdir(newtree, 0o777)
except os.error as msg:
print(newtree + ': cannot mkdir:', msg)
return 1
linkname = os.path.join(newtree, link)
try:
os.symlink(os.path.join(os.pardir, oldtree), linkname)
except os.error as msg:
if not link_may_fail:
print(linkname + ': cannot symlink:', msg)
return 1
else:
print(linkname + ': warning: cannot symlink:', msg)
linknames(oldtree, newtree, link)
return 0
def linknames(old, new, link):
if debug: print('linknames', (old, new, link))
try:
names = os.listdir(old)
except os.error as msg:
print(old + ': warning: cannot listdir:', msg)
return
for name in names:
if name not in (os.curdir, os.pardir):
oldname = os.path.join(old, name)
linkname = os.path.join(link, name)
newname = os.path.join(new, name)
if debug > 1: print(oldname, newname, linkname)
if os.path.isdir(oldname) and \
not os.path.islink(oldname):
try:
os.mkdir(newname, 0o777)
ok = 1
except:
print(newname + \
': warning: cannot mkdir:', msg)
ok = 0
if ok:
linkname = os.path.join(os.pardir,
linkname)
linknames(oldname, newname, linkname)
else:
os.symlink(linkname, newname)
if __name__ == '__main__':
sys.exit(main())