cpython/Tools/scripts/linktree.py

77 lines
1.9 KiB
Python
Raw Normal View History

1992-03-02 12:20:32 -04:00
#! /usr/local/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
1992-03-30 07:13:59 -04:00
import sys, os
1992-03-02 12:20:32 -04:00
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
1992-03-30 07:13:59 -04:00
if not os.path.isdir(oldtree):
1992-03-02 12:20:32 -04:00
print oldtree + ': not a directory'
return 1
try:
1992-03-30 07:13:59 -04:00
os.mkdir(newtree, 0777)
except os.error, msg:
1992-03-02 12:20:32 -04:00
print newtree + ': cannot mkdir:', msg
return 1
1992-03-30 07:13:59 -04:00
linkname = os.path.join(newtree, link)
1992-03-02 12:20:32 -04:00
try:
1992-03-30 07:13:59 -04:00
os.symlink(os.path.join(os.pardir, oldtree), linkname)
except os.error, msg:
1992-03-02 12:20:32 -04:00
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:
1992-03-30 07:13:59 -04:00
names = os.listdir(old)
except os.error, msg:
1992-03-02 12:20:32 -04:00
print old + ': warning: cannot listdir:', msg
return
for name in names:
1992-03-30 07:13:59 -04:00
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)
1992-03-02 12:20:32 -04:00
if debug > 1: print oldname, newname, linkname
1992-03-30 07:13:59 -04:00
if os.path.isdir(oldname) and not os.path.islink(oldname):
1992-03-02 12:20:32 -04:00
try:
1992-03-30 07:13:59 -04:00
os.mkdir(newname, 0777)
1992-03-02 12:20:32 -04:00
ok = 1
except:
print newname + ': warning: cannot mkdir:', msg
ok = 0
if ok:
1992-03-30 07:13:59 -04:00
linkname = os.path.join(os.pardir, linkname)
1992-03-02 12:20:32 -04:00
linknames(oldname, newname, linkname)
else:
1992-03-30 07:13:59 -04:00
os.symlink(linkname, newname)
1992-03-02 12:20:32 -04:00
sys.exit(main())