mirror of https://github.com/python/cpython
61 lines
1.7 KiB
Python
Executable File
61 lines
1.7 KiB
Python
Executable File
#! /usr/bin/env python
|
|
|
|
# A rather specialized script to make sure that a symbolic link named
|
|
# RCS exists pointing to a real RCS directory in a parallel tree
|
|
# referenced as RCStree in an ancestor directory.
|
|
# (I use this because I like my RCS files to reside on a physically
|
|
# different machine).
|
|
|
|
import os
|
|
|
|
def main():
|
|
rcstree = 'RCStree'
|
|
rcs = 'RCS'
|
|
if os.path.islink(rcs):
|
|
print '%r is a symlink to %r' % (rcs, os.readlink(rcs))
|
|
return
|
|
if os.path.isdir(rcs):
|
|
print '%r is an ordinary directory' % (rcs,)
|
|
return
|
|
if os.path.exists(rcs):
|
|
print '%r is a file?!?!' % (rcs,)
|
|
return
|
|
#
|
|
p = os.getcwd()
|
|
up = ''
|
|
down = ''
|
|
# Invariants:
|
|
# (1) join(p, down) is the current directory
|
|
# (2) up is the same directory as p
|
|
# Ergo:
|
|
# (3) join(up, down) is the current directory
|
|
#print 'p =', repr(p)
|
|
while not os.path.isdir(os.path.join(p, rcstree)):
|
|
head, tail = os.path.split(p)
|
|
#print 'head = %r; tail = %r' % (head, tail)
|
|
if not tail:
|
|
print 'Sorry, no ancestor dir contains %r' % (rcstree,)
|
|
return
|
|
p = head
|
|
up = os.path.join(os.pardir, up)
|
|
down = os.path.join(tail, down)
|
|
#print 'p = %r; up = %r; down = %r' % (p, up, down)
|
|
there = os.path.join(up, rcstree)
|
|
there = os.path.join(there, down)
|
|
there = os.path.join(there, rcs)
|
|
if os.path.isdir(there):
|
|
print '%r already exists' % (there, )
|
|
else:
|
|
print 'making %r' % (there,)
|
|
makedirs(there)
|
|
print 'making symlink %r -> %r' % (rcs, there)
|
|
os.symlink(there, rcs)
|
|
|
|
def makedirs(p):
|
|
if not os.path.isdir(p):
|
|
head, tail = os.path.split(p)
|
|
makedirs(head)
|
|
os.mkdir(p, 0777)
|
|
|
|
main()
|