--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/mercurial/templatekw.py Sun Dec 13 18:06:23 2009 +0100
@@ -0,0 +1,69 @@
+# templatekw.py - common changeset template keywords
+#
+# Copyright 2005-2009 Matt Mackall <mpm@selenic.com>
+#
+# This software may be used and distributed according to the terms of the
+# GNU General Public License version 2, incorporated herein by reference.
+
+
+def showlist(templ, name, values, plural=None, **args):
+ '''expand set of values.
+ name is name of key in template map.
+ values is list of strings or dicts.
+ plural is plural of name, if not simply name + 's'.
+
+ expansion works like this, given name 'foo'.
+
+ if values is empty, expand 'no_foos'.
+
+ if 'foo' not in template map, return values as a string,
+ joined by space.
+
+ expand 'start_foos'.
+
+ for each value, expand 'foo'. if 'last_foo' in template
+ map, expand it instead of 'foo' for last key.
+
+ expand 'end_foos'.
+ '''
+ if plural: names = plural
+ else: names = name + 's'
+ if not values:
+ noname = 'no_' + names
+ if noname in templ:
+ yield templ(noname, **args)
+ return
+ if name not in templ:
+ if isinstance(values[0], str):
+ yield ' '.join(values)
+ else:
+ for v in values:
+ yield dict(v, **args)
+ return
+ startname = 'start_' + names
+ if startname in templ:
+ yield templ(startname, **args)
+ vargs = args.copy()
+ def one(v, tag=name):
+ try:
+ vargs.update(v)
+ except (AttributeError, ValueError):
+ try:
+ for a, b in v:
+ vargs[a] = b
+ except ValueError:
+ vargs[name] = v
+ return templ(tag, **vargs)
+ lastname = 'last_' + name
+ if lastname in templ:
+ last = values.pop()
+ else:
+ last = None
+ for v in values:
+ yield one(v)
+ if last is not None:
+ yield one(last, tag=lastname)
+ endname = 'end_' + names
+ if endname in templ:
+ yield templ(endname, **args)
+