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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 |