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annotate mercurial/templatekw.py @ 10053:5c5c6295533d

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cmdutil: replace showlist() closure with a function
author Patrick Mezard <pmezard@gmail.com>
date Sun, 13 Dec 2009 18:06:23 +0100
parents
children 1a85861f59af
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10053
5c5c6295533d cmdutil: replace showlist() closure with a function
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1 # templatekw.py - common changeset template keywords
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2 #
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3 # Copyright 2005-2009 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2, incorporated herein by reference.
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7
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8
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9 def showlist(templ, name, values, plural=None, **args):
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10 '''expand set of values.
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11 name is name of key in template map.
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12 values is list of strings or dicts.
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13 plural is plural of name, if not simply name + 's'.
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14
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15 expansion works like this, given name 'foo'.
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16
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17 if values is empty, expand 'no_foos'.
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18
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19 if 'foo' not in template map, return values as a string,
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20 joined by space.
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21
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22 expand 'start_foos'.
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23
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24 for each value, expand 'foo'. if 'last_foo' in template
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25 map, expand it instead of 'foo' for last key.
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26
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27 expand 'end_foos'.
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28 '''
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29 if plural: names = plural
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30 else: names = name + 's'
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31 if not values:
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32 noname = 'no_' + names
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33 if noname in templ:
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34 yield templ(noname, **args)
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35 return
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36 if name not in templ:
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37 if isinstance(values[0], str):
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38 yield ' '.join(values)
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39 else:
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40 for v in values:
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41 yield dict(v, **args)
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42 return
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43 startname = 'start_' + names
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44 if startname in templ:
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45 yield templ(startname, **args)
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46 vargs = args.copy()
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47 def one(v, tag=name):
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48 try:
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49 vargs.update(v)
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50 except (AttributeError, ValueError):
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51 try:
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52 for a, b in v:
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53 vargs[a] = b
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54 except ValueError:
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55 vargs[name] = v
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56 return templ(tag, **vargs)
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57 lastname = 'last_' + name
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58 if lastname in templ:
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59 last = values.pop()
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60 else:
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61 last = None
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62 for v in values:
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63 yield one(v)
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64 if last is not None:
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65 yield one(last, tag=lastname)
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66 endname = 'end_' + names
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67 if endname in templ:
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68 yield templ(endname, **args)
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69