mercurial/util.py
author mpm@selenic.com
Fri, 24 Jun 2005 22:51:39 -0800
changeset 460 6409d9a0df43
parent 441 e8af362cfb01
child 461 9ae0034f2772
child 464 50da4bb9cab6
permissions -rw-r--r--
add dirstate debugging commands -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 add dirstate debugging commands As I've played with various different merges and more recently rawcommit, I've found the following patch to be very very helpful in figuring out whether the dirstate is being left in a consistent or inconsistent state with respect to the current manifest. I attempted to deduce the invariants that were assumed by the current code, and then check it in this code. I may or may not have captured the design intent in this check; if not, I'd be very happy to hear more clearly what was intended, so that I can write tests to that expectation. Anyway, here's the patch. Not sure if it's a good idea to commit it to the mainline, or just leave it as a debugging aid. I attempted to package it so that it doesn't interfere with normal usage. Michael Fetterman (tweaked by mpm: remove -d magic) manifest hash: 869f5b5f954dc0f46ba27322359e811d5e21d71c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCvP77ywK+sNU5EO8RArmtAKCCVuI2slANzWZ26P5edtH/ixdwNwCfZLWl 5P+V+C92II3usO4YW2MULKY= =/Pv4 -----END PGP SIGNATURE-----

# util.py - utility functions and platform specfic implementations
#
# Copyright 2005 K. Thananchayan <thananck@yahoo.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.

import os

def rename(src, dst):
    try:
        os.rename(src, dst)
    except:
        os.unlink(dst)
        os.rename(src, dst)

# Platfor specific varients
if os.name == 'nt':
    def is_exec(f, last):
        return last

    def set_exec(f, mode):
        pass
    
    def pconvert(path):
        return path.replace("\\", "/")

    def makelock(info, pathname):
        ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL)
        os.write(ld, info)
        os.close(ld)

    def readlock(pathname):
        return file(pathname).read()
else:
    def is_exec(f, last):
        return (os.stat(f).st_mode & 0100 != 0)

    def set_exec(f, mode):
        s = os.stat(f).st_mode
        if (s & 0100 != 0) == mode:
            return
        if mode:
            # Turn on +x for every +r bit when making a file executable
            # and obey umask.
            umask = os.umask(0)
            os.umask(umask)
            os.chmod(f, s | (s & 0444) >> 2 & ~umask)
        else:
            os.chmod(f, s & 0666)

    def pconvert(path):
        return path

    def makelock(info, pathname):
        os.symlink(info, pathname)

    def readlock(pathname):
        return os.readlink(pathname)