X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/8250c3a45799cecb0f3a4f48e9a660ae4e937f39..94268a46cd30fc72b51714e42e9db741eb29cc73:/IkiWiki/Plugin/transient.pm

diff --git a/IkiWiki/Plugin/transient.pm b/IkiWiki/Plugin/transient.pm
index 5764467ab..c0ad5fc11 100644
--- a/IkiWiki/Plugin/transient.pm
+++ b/IkiWiki/Plugin/transient.pm
@@ -8,6 +8,7 @@ use IkiWiki 3.00;
 sub import {
 	hook(type => "getsetup", id => "transient",  call => \&getsetup);
 	hook(type => "checkconfig", id => "transient", call => \&checkconfig);
+	hook(type => "change", id => "transient", call => \&change);
 }
 
 sub getsetup () {
@@ -24,10 +25,27 @@ sub getsetup () {
 our $transientdir;
 
 sub checkconfig () {
-	eval q{use Cwd 'abs_path'};
-	error($@) if $@;
-	$transientdir = abs_path($config{wikistatedir})."/transient";
-	add_underlay($transientdir);
+	if (defined $config{wikistatedir}) {
+		$transientdir = $config{wikistatedir}."/transient";
+		# add_underlay treats relative underlays as relative to the installed
+		# location, not the cwd. That's not what we want here.
+		IkiWiki::add_literal_underlay($transientdir);
+	}
+}
+
+sub change (@) {
+	foreach my $file (@_) {
+		# If the corresponding file exists in the transient underlay
+		# and isn't actually being used, we can get rid of it.
+		# Assume that the file that just changed has the same extension
+		# as the obsolete transient version: this'll be true for web
+		# edits, and avoids invoking File::Find.
+		my $casualty = "$transientdir/$file";
+		if (srcfile($file) ne $casualty && -e $casualty) {
+			debug(sprintf(gettext("removing transient version of %s"), $file));
+			IkiWiki::prune($casualty);
+		}
+	}
 }
 
 1;