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# templatekw.py - common changeset template keywords
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#
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# Copyright 2005-2009 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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def showlist(templ, name, values, plural=None, **args):
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'''expand set of values.
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name is name of key in template map.
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values is list of strings or dicts.
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plural is plural of name, if not simply name + 's'.
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expansion works like this, given name 'foo'.
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if values is empty, expand 'no_foos'.
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if 'foo' not in template map, return values as a string,
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joined by space.
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expand 'start_foos'.
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for each value, expand 'foo'. if 'last_foo' in template
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map, expand it instead of 'foo' for last key.
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expand 'end_foos'.
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'''
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if plural: names = plural
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else: names = name + 's'
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if not values:
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noname = 'no_' + names
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if noname in templ:
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yield templ(noname, **args)
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return
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if name not in templ:
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if isinstance(values[0], str):
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yield ' '.join(values)
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else:
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for v in values:
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yield dict(v, **args)
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return
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startname = 'start_' + names
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if startname in templ:
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yield templ(startname, **args)
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vargs = args.copy()
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def one(v, tag=name):
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try:
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vargs.update(v)
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except (AttributeError, ValueError):
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try:
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for a, b in v:
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vargs[a] = b
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except ValueError:
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vargs[name] = v
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return templ(tag, **vargs)
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lastname = 'last_' + name
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if lastname in templ:
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last = values.pop()
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else:
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last = None
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for v in values:
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yield one(v)
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if last is not None:
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yield one(last, tag=lastname)
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endname = 'end_' + names
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if endname in templ:
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yield templ(endname, **args)
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