From b73da1274639d641415e3936f599e46fa4799787 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <tschwinge@gnu.org>
Date: Tue, 28 Aug 2007 17:16:13 +0200
Subject: First version of a `license' plugin.  Use it.

---
 .library/IkiWiki/Plugin/license.pm | 89 ++++++++++++++++++++++++++++++++++++++
 render_locally                     |  2 +
 2 files changed, 91 insertions(+)
 create mode 100644 .library/IkiWiki/Plugin/license.pm

diff --git a/.library/IkiWiki/Plugin/license.pm b/.library/IkiWiki/Plugin/license.pm
new file mode 100644
index 00000000..e608461f
--- /dev/null
+++ b/.library/IkiWiki/Plugin/license.pm
@@ -0,0 +1,89 @@
+# A plugin for ikiwiki to implement adding a footer with licensing information
+# to every rendered page.
+
+# Copyright © 2007 Thomas Schwinge <tschwinge@gnu.org>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any later
+# version.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+# 
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+# A footer with licensing information will be added to every rendered page if
+# either (a) a file `license.mdwn' is found (using the same rules as for the
+# sidebar plugin) or (b) (which be used to override (a)) a statement à la
+# ``[[license text=WHATEVER]]'' is found in the source page.
+#
+# The state which page's license text was gathered from which source is not
+# tracked, so you'll need a full wiki-rebuild if (a)'s files are changed.
+
+package IkiWiki::Plugin::license;
+
+use warnings;
+use strict;
+use IkiWiki 2.00;
+
+sub import
+{
+    hook (type => "preprocess", id => "license", call => \&preprocess);
+    hook (type => "pagetemplate", id => "license", call => \&pagetemplate);
+}
+
+my %text;
+
+sub preprocess (@)
+{
+    my %params = @_;
+    my $page = $params {page};
+
+    # We don't return any text here, but record the passed text.
+    $text {$page} = $params {text};
+    return "";
+}
+
+sub pagetemplate (@)
+{
+    my %params = @_;
+    my $page = $params {page};
+    my $destpage = $params {destpage};
+
+    my $template = $params {template};
+
+    if ($template->query (name => "license"))
+    {
+	my $content;
+	my $pagetype;
+	if (defined $text {$page})
+	{
+	    $pagetype = pagetype ($pagesources {$page});
+	    $content = $text {$page};
+	}
+	else
+	{
+	    my $license_page = bestlink ($page, "license") || return;
+	    my $license_file = $pagesources {$license_page} || return;
+	    $pagetype = pagetype ($license_file);
+	    $content = readfile (srcfile ($license_file));
+	}
+
+	if (defined $content && length $content)
+	{
+	    $template->param (license =>
+	      IkiWiki::htmlize ($destpage, $pagetype,
+		IkiWiki::linkify ($page, $destpage,
+		  IkiWiki::preprocess ($page, $destpage,
+		    IkiWiki::filter ($page, $destpage, $content)))));
+
+	}
+    }
+}
+
+1
diff --git a/render_locally b/render_locally
index 660efca2..d2453c8c 100755
--- a/render_locally
+++ b/render_locally
@@ -26,6 +26,8 @@ ikiwiki \
   --plugin goodstuff \
   --plugin favicon \
   --plugin sidebar \
+  --libdir "$src"/.library \
+  --plugin license \
   ${1+"$@"} \
   "$src" "$dest" &&
 
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