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Move dirstate.uniq to util.unique -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Move dirstate.uniq to util.unique manifest hash: 8ac613c30a4471f14ae52f14ed0839d66eeaebb7 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCxQAqywK+sNU5EO8RAsTiAJ9E9/cALe+W8ojtfVdiXXre5dB/9gCeOgxr mRnVw/WDplkATW5450Pgsug= =xSfl -----END PGP SIGNATURE-----
date Fri, 01 Jul 2005 00:34:50 -0800
parents 0fb8ade0f756
children 31a9aa890016
line wrap: on
line source

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

import os

def unique(g):
    seen = {}
    for f in g:
        if f not in seen:
            seen[f] = 1
            yield f

class CommandError(Exception): pass

def explain_exit(code):
    """return a 2-tuple (desc, code) describing a process's status"""
    if os.WIFEXITED(code):
        val = os.WEXITSTATUS(code)
        return "exited with status %d" % val, val
    elif os.WIFSIGNALED(code):
        val = os.WTERMSIG(code)
        return "killed by signal %d" % val, val
    elif os.WIFSTOPPED(code):
        val = os.STOPSIG(code)
        return "stopped by signal %d" % val, val
    raise ValueError("invalid exit code")

def system(cmd, errprefix=None):
    """execute a shell command that must succeed"""
    rc = os.system(cmd)
    if rc:
        errmsg = "%s %s" % (os.path.basename(cmd.split(None, 1)[0]),
        if errprefix:
            errmsg = "%s: %s" % (errprefix, errmsg)
        raise CommandError(errmsg)

def rename(src, dst):
        os.rename(src, dst)
        os.rename(src, dst)

# Platfor specific varients
if == 'nt':
    nulldev = 'NUL:'

    def is_exec(f, last):
        return last

    def set_exec(f, mode):

    def pconvert(path):
        return path.replace("\\", "/")

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

    def readlock(pathname):
        return file(pathname).read()

    nulldev = '/dev/null'

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