Mercurial > public > mercurial-scm > hg
diff mercurial/templater.py @ 29085:df838803c1d4
templater: add separate() template function
A pretty common pattern in templates is adding conditional separators
like so:
{node}{if(bookmarks, " {bookmarks}")}{if(tags, " {tags}")}
With this patch, the above can be simplified to:
{separate(" ", node, bookmarks, tags)}
The function is similar to the already existing join(), but with a few
differences:
* separate() skips empty arguments
* join() expects a single list argument, while separate() expects
each item as a separate argument
* separate() takes the separator first in order to allow a variable
number of arguments after it
| author | Martin von Zweigbergk <martinvonz@google.com> |
|---|---|
| date | Tue, 03 May 2016 09:49:54 -0700 |
| parents | d813132ea361 |
| children | 84ef4517de03 |
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--- a/mercurial/templater.py Wed May 04 21:01:49 2016 -0400 +++ b/mercurial/templater.py Tue May 03 09:49:54 2016 -0700 @@ -724,6 +724,25 @@ return minirst.format(text, style=style, keep=['verbose']) +@templatefunc('separate(sep, args)') +def separate(context, mapping, args): + """Add a separator between non-empty arguments.""" + if not args: + # i18n: "separate" is a keyword + raise error.ParseError(_("separate expects at least one argument")) + + sep = evalstring(context, mapping, args[0]) + first = True + for arg in args[1:]: + argstr = evalstring(context, mapping, arg) + if not argstr: + continue + if first: + first = False + else: + yield sep + yield argstr + @templatefunc('shortest(node, minlength=4)') def shortest(context, mapping, args): """Obtain the shortest representation of