From 743f69c675de6bdf240a2980e0924ed9d3bb782b Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@gnu.kitenet.net>
Date: Sat, 3 Oct 2009 15:31:51 -0400
Subject: [PATCH] add dependency type parameters to add_depends

Dependency types are represented by bits in the values of the %depends
and %depends_simple hashes.

Change the dependslist array saved to the index to a depends hash.
depends_simple is also converted from an array to a hash.

Note that the depends field used to be a string, and we still
have compat code to handle upgrades from that, as well as from the arrays.
I didn't use ikiwiki-transition because I don't want ikiwiki to break if
users forget to run it; also we're going to recommend a full rebuild on
upgrade to this version to get the improved dependency handling. So
this compat code can be removed or moved to ikiwiki-transition later.
---
 IkiWiki.pm | 38 ++++++++++++++++++++++++++++++--------
 1 file changed, 30 insertions(+), 8 deletions(-)

diff --git a/IkiWiki.pm b/IkiWiki.pm
index 2637f6017..67149bc8b 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -28,6 +28,10 @@ our $VERSION = 3.00; # plugin interface version, next is ikiwiki version
 our $version='unknown'; # VERSION_AUTOREPLACE done by Makefile, DNE
 our $installdir='/usr'; # INSTALLDIR_AUTOREPLACE done by Makefile, DNE
 
+# Page dependency types.
+our $DEPEND_EXISTS=1;
+our $DEPEND_CONTENT=2;
+
 # Optimisation.
 use Memoize;
 memoize("abs2rel");
@@ -1524,18 +1528,28 @@ sub loadindex () {
 				$links{$page}=$d->{links};
 				$oldlinks{$page}=[@{$d->{links}}];
 			}
-			if (exists $d->{depends_simple}) {
+			if (ref $d->{depends_simple} eq 'ARRAY') {
+				# old format
 				$depends_simple{$page}={
 					map { $_ => 1 } @{$d->{depends_simple}}
 				};
 			}
+			elsif (exists $d->{depends_simple}) {
+				$depends{$page}=$d->{depends_simple};
+			}
 			if (exists $d->{dependslist}) {
+				# old format
 				$depends{$page}={
-					map { $_ => 1 } @{$d->{dependslist}}
+					map { $_ => $DEPEND_CONTENT | $DEPEND_EXISTS }
+						@{$d->{dependslist}}
 				};
 			}
+			elsif (exists $d->{depends} && ! ref $d->{depends}) {
+				# old format
+				$depends{$page}={$d->{depends} => $DEPEND_CONTENT | $DEPEND_EXISTS};
+			}
 			elsif (exists $d->{depends}) {
-				$depends{$page}={$d->{depends} => 1};
+				$depends{$page}=$d->{depends};
 			}
 			if (exists $d->{state}) {
 				$pagestate{$page}=$d->{state};
@@ -1581,11 +1595,11 @@ sub saveindex () {
 		};
 
 		if (exists $depends{$page}) {
-			$index{page}{$src}{dependslist} = [ keys %{$depends{$page}} ];
+			$index{page}{$src}{depends} = $depends{$page};
 		}
 
 		if (exists $depends_simple{$page}) {
-			$index{page}{$src}{depends_simple} = [ keys %{$depends_simple{$page}} ];
+			$index{page}{$src}{depends_simple} = $depends_simple{$page};
 		}
 
 		if (exists $pagestate{$page}) {
@@ -1753,20 +1767,28 @@ sub rcs_receive () {
 	$hooks{rcs}{rcs_receive}{call}->();
 }
 
-sub add_depends ($$) {
+sub add_depends ($$;@) {
 	my $page=shift;
 	my $pagespec=shift;
 
+	my $deptype=$DEPEND_CONTENT | $DEPEND_EXISTS;
+	if (@_) {
+		my %params=@_;
+		if (defined $params{content} && $params{content} == 0) {
+			$deptype=$deptype & ~$DEPEND_CONTENT;
+		}
+	}
+
 	if ($pagespec =~ /$config{wiki_file_regexp}/ &&
 		$pagespec !~ /[\s*?()!]/) {
 		# a simple dependency, which can be matched by string eq
-		$depends_simple{$page}{lc $pagespec} = 1;
+		$depends_simple{$page}{lc $pagespec} |= $deptype;
 		return 1;
 	}
 
 	return unless pagespec_valid($pagespec);
 
-	$depends{$page}{$pagespec} = 1;
+	$depends{$page}{$pagespec} |= $deptype;
 	return 1;
 }
 
-- 
2.26.2