mercurial/util.py
author mpm@selenic.com
Fri, 24 Jun 2005 22:58:14 -0800
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[PATCH] /dev/null for other OS -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 [PATCH] /dev/null for other OS From: K Thananchayan <thananck@yahoo.com> Null device name is platform dependent. Introduce util.nulldev - - platform dependent constant and use it instead of '/dev/null' manifest hash: 95a1bfdb712c53ef97aaff73f7f4c87e9299cf59 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCvQCGywK+sNU5EO8RAiRBAKCcXasCCFT2+6wgklkgqIt4l3UwugCeKWii h/8iRYEw8Rp8B67abiFiwyY= =L3Mk -----END PGP SIGNATURE-----
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# util.py - utility functions and platform specfic implementations
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#
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# Copyright 2005 K. Thananchayan <thananck@yahoo.com>
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#
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# This software may be used and distributed according to the terms
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# of the GNU General Public License, incorporated herein by reference.
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import os
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def rename(src, dst):
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    try:
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        os.rename(src, dst)
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    except:
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        os.unlink(dst)
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        os.rename(src, dst)
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# Platfor specific varients
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if os.name == 'nt':
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    nulldev = 'NUL:'
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    def is_exec(f, last):
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        return last
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    def set_exec(f, mode):
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        pass
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    def pconvert(path):
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        return path.replace("\\", "/")
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    def makelock(info, pathname):
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        ld = os.open(pathname, os.O_CREAT | os.O_WRONLY | os.O_EXCL)
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        os.write(ld, info)
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        os.close(ld)
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    def readlock(pathname):
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        return file(pathname).read()
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else:
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    nulldev = '/dev/null'
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    def is_exec(f, last):
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        return (os.stat(f).st_mode & 0100 != 0)
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    def set_exec(f, mode):
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        s = os.stat(f).st_mode
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        if (s & 0100 != 0) == mode:
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            return
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        if mode:
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            # Turn on +x for every +r bit when making a file executable
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            # and obey umask.
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            umask = os.umask(0)
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            os.umask(umask)
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            os.chmod(f, s | (s & 0444) >> 2 & ~umask)
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        else:
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            os.chmod(f, s & 0666)
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    def pconvert(path):
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        return path
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    def makelock(info, pathname):
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        os.symlink(info, pathname)
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    def readlock(pathname):
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        return os.readlink(pathname)