X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/daafdf1acb426e0abae218a04c8b22e8b9885354..76746c5fe6a8e851b971c8222a4929fe3be7f60a:/IkiWiki.pm?ds=sidebyside

diff --git a/IkiWiki.pm b/IkiWiki.pm
index c059a9b9f..73d2a9763 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -29,8 +29,9 @@ 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;
+our $DEPEND_CONTENT=1;
+our $DEPEND_PRESENCE=2;
+our $DEPEND_LINKS=4;
 
 # Optimisation.
 use Memoize;
@@ -1535,18 +1536,18 @@ sub loadindex () {
 				};
 			}
 			elsif (exists $d->{depends_simple}) {
-				$depends{$page}=$d->{depends_simple};
+				$depends_simple{$page}=$d->{depends_simple};
 			}
 			if (exists $d->{dependslist}) {
 				# old format
 				$depends{$page}={
-					map { $_ => $DEPEND_CONTENT | $DEPEND_EXISTS }
+					map { $_ => $DEPEND_CONTENT }
 						@{$d->{dependslist}}
 				};
 			}
 			elsif (exists $d->{depends} && ! ref $d->{depends}) {
 				# old format
-				$depends{$page}={$d->{depends} => $DEPEND_CONTENT | $DEPEND_EXISTS};
+				$depends{$page}={$d->{depends} => $DEPEND_CONTENT };
 			}
 			elsif (exists $d->{depends}) {
 				$depends{$page}=$d->{depends};
@@ -1771,17 +1772,45 @@ sub add_depends ($$;@) {
 	my $page=shift;
 	my $pagespec=shift;
 
+	# Is the pagespec a simple page name?
 	my $simple=$pagespec =~ /$config{wiki_file_regexp}/ &&
 		$pagespec !~ /[\s*?()!]/;
 
-	my $deptype=$DEPEND_CONTENT | $DEPEND_EXISTS;
+	my $deptype=0;
 	if (@_) {
 		my %params=@_;
-		if (defined $params{content} && $params{content} == 0 &&
-		    ($simple || pagespec_contentless($pagespec))) {
-			$deptype=$deptype & ~$DEPEND_CONTENT;
+		
+		if ($params{presence}) {
+ 			# Is the pagespec limited to terms that will continue
+			# to match pages as long as those pages exist?
+			my $presence_limited=1;
+			while ($presence_limited && $pagespec=~m/(\w+)\([^\)]*\)/g) {
+				$presence_limited = $1 =~ /^(glob|internal|creation_month|creation_day|creation_year|created_before|created_after)$/;
+			}
+			if ($presence_limited) {
+				$deptype=$deptype | $DEPEND_PRESENCE;
+			}
+			else {
+				$deptype=$deptype | $DEPEND_CONTENT;
+			}
+		}
+		if ($params{links}) {
+ 			# Is the pagespec limited to terms that will continue
+			# to match pages as long as those pages exist and
+			# link to the same places?
+			my $links_limited=1;
+			while ($links_limited && $pagespec=~m/(\w+)\([^\)]*\)/g) {
+				$links_limited = $1 =~ /^(glob|internal|creation_month|creation_day|creation_year|created_before|created_after|backlink)$/;
+			}
+			if ($links_limited) {
+				$deptype=$deptype | $DEPEND_LINKS;
+			}
+			else {
+				$deptype=$deptype | $DEPEND_CONTENT;
+			}
 		}
 	}
+	$deptype=$DEPEND_CONTENT unless $deptype;
 
 	if ($simple) {
 		$depends_simple{$page}{lc $pagespec} |= $deptype;
@@ -1894,13 +1923,13 @@ sub pagespec_translate ($) {
 			[^\s()]+	# any other text
 		)
 		\s*		# ignore whitespace
-	}igx) {
+	}gx) {
 		my $word=$1;
 		if (lc $word eq 'and') {
-			$code.=' &&';
+			$code.=' &';
 		}
 		elsif (lc $word eq 'or') {
-			$code.=' ||';
+			$code.=' |';
 		}
 		elsif ($word eq "(" || $word eq ")" || $word eq "!") {
 			$code.=' '.$word;
@@ -1976,20 +2005,6 @@ sub pagespec_valid ($) {
 	return ! $@;
 }
 
-sub pagespec_contentless ($) {
-	my $spec=shift;
-
-	while ($spec=~m{
-		(\w+)\([^\)]*\) # only match pagespec functions
-	}igx) {
-		# only glob and internal can be matched contentless
-		# (first approximation)
-		return 0 if $1 ne "glob" && $1 ne "internal";
-	}
-
-	return 1;
-}
-
 sub glob2re ($) {
 	my $re=quotemeta(shift);
 	$re=~s/\\\*/.*/g;
@@ -2000,36 +2015,40 @@ sub glob2re ($) {
 package IkiWiki::FailReason;
 
 use overload (
-	'""'	=> sub { ${$_[0]} },
+	'""'	=> sub { $_[0][0] },
 	'0+'	=> sub { 0 },
 	'!'	=> sub { bless $_[0], 'IkiWiki::SuccessReason'},
+	'&'	=> sub { $_[0][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[0] },
+	'|'	=> sub { $_[1][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[1] },
 	fallback => 1,
 );
 
-sub new {
-	my $class = shift;
-	my $value = shift;
-	return bless \$value, $class;
-}
-
-package IkiWiki::ErrorReason;
-
-our @ISA = 'IkiWiki::FailReason';
+our @ISA = 'IkiWiki::SuccessReason';
 
 package IkiWiki::SuccessReason;
 
 use overload (
-	'""'	=> sub { ${$_[0]} },
+	'""'	=> sub { $_[0][0] },
 	'0+'	=> sub { 1 },
 	'!'	=> sub { bless $_[0], 'IkiWiki::FailReason'},
+	'&'	=> sub { $_[1][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[1] },
+	'|'	=> sub { $_[0][1]={%{$_[0][1]}, %{$_[1][1]}}; $_[0] },
 	fallback => 1,
 );
 
 sub new {
 	my $class = shift;
 	my $value = shift;
-	return bless \$value, $class;
-};
+	return bless [$value, {@_}], $class;
+}
+
+sub influences {
+	return keys %{$_[0][1]};
+}
+
+package IkiWiki::ErrorReason;
+
+our @ISA = 'IkiWiki::FailReason';
 
 package IkiWiki::PageSpec;