view mercurial/fancyopts.py @ 1877:d314a89fa4f1

change lock format to let us detect and break stale locks.

old style: symlink to pid
new style: symlink to hostname:pid

if lock code finds new-style lock, it breaks lock if locking pid is on
same machine and pid is not alive.

otherwise, lock is left alone.  this makes locking code safe with
old-style locks and with locks on other machines.

new code makes server part of mercurial more robust in case machine
crashes, power fails, or crazy user does kill -9.

import getopt

def fancyopts(args, options, state):
    long = []
    short = ''
    map = {}
    dt = {}

    for s, l, d, c in options:
        pl = l.replace('-', '_')
        map['-'+s] = map['--'+l] = pl
        state[pl] = d
        dt[pl] = type(d)
        if not d is None and not callable(d):
            if s: s += ':'
            if l: l += '='
        if s: short = short + s
        if l: long.append(l)

    opts, args = getopt.getopt(args, short, long)

    for opt, arg in opts:
        if dt[map[opt]] is type(fancyopts): state[map[opt]](state,map[opt],arg)
        elif dt[map[opt]] is type(1): state[map[opt]] = int(arg)
        elif dt[map[opt]] is type(''): state[map[opt]] = arg
        elif dt[map[opt]] is type([]): state[map[opt]].append(arg)
        elif dt[map[opt]] is type(None): state[map[opt]] = 1

    return args