mercurial/fancyopts.py
author Matt Mackall <mpm@selenic.com>
Wed, 06 Jul 2005 22:20:12 -0800
changeset 635 85e2209d401c
parent 608 d2994b5298fb
child 667 31a9aa890016
permissions -rw-r--r--
Protocol switch from using generators to stream-like objects. This allows the the pull side to precisely control how much data is read so that another encapsulation layer is not needed. An http client gets a response with a finite size. Because ssh clients need to keep the stream open, we must not read more data than is sent in a response. But due to the streaming nature of the changegroup scheme, only the piece that's parsing the data knows how far it's allowed to read. This means the generator scheme isn't fine-grained enough. Instead we need file-like objects with a read(x) method. This switches everything for push/pull over to using file-like objects rather than generators.
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import os, getopt
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def fancyopts(args, options, state):
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    long=[]
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    short=''
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    map={}
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    dt={}
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    for s, l, d, c in options:
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        map['-'+s] = map['--'+l]=l
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        state[l] = d
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        dt[l] = type(d)
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        if not d is None and not callable(d): s, l=s+':', l+'='
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        if s: short = short + s
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        if l: long.append(l)
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    opts, args = getopt.getopt(args, short, long)
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    for opt, arg in opts:
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        if dt[map[opt]] is type(fancyopts): state[map[opt]](state,map[opt],arg)
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        elif dt[map[opt]] is type(1): state[map[opt]] = int(arg)
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        elif dt[map[opt]] is type(''): state[map[opt]] = arg
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        elif dt[map[opt]] is type([]): state[map[opt]].append(arg)
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        elif dt[map[opt]] is type(None): state[map[opt]] = 1
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    return args
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