mercurial/fancyopts.py

Beginning of new command parsing interface

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Beginning of new command parsing interface

This adds commands.py, with a primary interface dispatch(args)

Dispatch searches a table of known commands, handles switches, sets up
a repo object if appropriate, and dispatches the command.

It also handles KeyboardInterrupt and can handle similar exceptions in
the future.

If the command is unknown, it falls through to the current command handler.

Commands currently handled by the new scheme: help, init, and annotate

manifest hash: 134cd032c880985e3f92f82efb8b629dd862ba4c
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import sys, os, getopt

def fancyopts(args, options, state, syntax='', minlen = 0):
    long=[]
    short=''
    map={}
    dt={}

    def help(state, opt, arg, options=options, syntax=syntax):
        print "Usage: ", syntax

        for s, l, d, c in options:
            opt=' '
            if s: opt = opt + '-' + s + ' '
            if l: opt = opt + '--' + l + ' '
            if d: opt = opt + '(' + str(d) + ')'
            print opt
            if c: print '   %s' % c
        sys.exit(0)

    if len(args) < minlen:
        help(state, None, args)

    options=[('h', 'help', help, 'Show usage info')] + options
    
    for s, l, d, c in options:
        map['-'+s] = map['--'+l]=l
        state[l] = d
        dt[l] = type(d)
        if not d is None and not type(d) is type(help): s, l=s+':', l+'='      
        if s: short = short + s
        if l: long.append(l)

    if os.environ.has_key("HG_OPTS"):
        args = os.environ["HG_OPTS"].split() + args

    try:
        opts, args = getopt.getopt(args, short, long)
    except getopt.GetoptError:
        help(state, None, args)
        sys.exit(-1)

    for opt, arg in opts:
        if dt[map[opt]] is type(help): 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

    del state["help"]

    return args