[[!tag patch wishlist]]I quite often find myself repeating a boiler-plate
pagespec chunk, e.g.
and !*.png and !*.jpg...
it would be quite nice if I could conveniently bundle them together into a
pagespec "alias", and instead write
and !image()...
I wrote the following plugin to achieve this:
commit f3a9dd113338fe5d2b717de1dc69679ff74e2f8d
Author: Jon Dowland <jmtd@debian.org>
Date: Tue May 3 17:40:16 2011 +0100
new plugin: alias.pm - pagespec aliases
diff --git a/IkiWiki/Plugin/alias.pm b/IkiWiki/Plugin/alias.pm
new file mode 100644
index 0000000..b8d4574
--- /dev/null
+++ b/IkiWiki/Plugin/alias.pm
@@ -0,0 +1,47 @@
+package IkiWiki::Plugin::alias;
+
+use warnings;
+use strict;
+use IkiWiki '3.00';
+
+sub import {
+ hook(type => "getsetup", id=> "alias", call => \&getsetup);
+ hook(type => "checkconfig", id=> "alias", call => \&checkconfig);
+}
+
+sub getsetup () {
+ return
+ plugin => {
+ description => "allows the definition of pagespec aliases",
+ safe => 1,
+ rebuild => 1,
+ section => "misc",
+ },
+ pagespec_aliases => {
+ type => "string",
+ example => {"image" => "*jpg or *jpeg or *png or *gif or *ico" },
+ description => "a set of mappings from alias name to pagespec",
+ safe => 1,
+ rebuild => 0,
+ },
+}
+
+sub checkconfig () {
+ no strict 'refs';
+ no warnings 'redefine';
+
+ if ($config{pagespec_aliases}) {
+ foreach my $key (keys %{$config{pagespec_aliases}}) {
+ my $value = ${$config{pagespec_aliases}}{$key};
+ # XXX: validate key?
+ my $subname = "IkiWiki::PageSpec::match_$key";
+ *{ $subname } = sub {
+ my $path = shift;
+ return IkiWiki::pagespec_match($path, $value);
+ }
+ }
+ }
+}
+
+1;
I need to reflect on this a bit more before I send a pull request. In
particular I imagine the strict/warnings stuff will make you puke. Also, I'm
not sure whether I should name-grab 'alias' since [[todo/alias_directive]] is
an existing wishlist item.
Here's an example setup chunk:
pagespec_aliases:
image: "*.png or *.jpg or *.jpeg or *.gif or *.ico"
helper: "*.css or *.js"
boring: "image() or helper()"
The above demonstrates self-referential dynamic pagespec aliases. It doesn't work,
however, to add ' or internal()' to boring, for some reason.
-- [[Jon]]
