r128: Initial revision

1 files changed, 70 insertions, 0 deletions

diff --git a/dh_link b/dh_link
new file mode 100755
index 00000000..8d4c32ad
--- /dev/null
+++ b/dh_link
@@ -0,0 +1,70 @@
+#!/usr/bin/perl -w
+#
+# Generate symlinks in debian packages, reading debian/links. The
+# file contains pairs of files and symlinks.
+
+BEGIN { push @INC, "debian", "/usr/lib/debhelper" }
+use Dh_Lib;
+init();
+
+foreach $PACKAGE (@{$dh{DOPACKAGES}}) {
+	$TMP=tmpdir($PACKAGE);
+	$file=pkgfile($PACKAGE,"links");
+
+	undef @links;
+	if ($file) {
+		@links=filearray($file);
+	}
+
+	# Make sure it has pairs of symlinks and destinations. If it
+	# doesn't, $#links will be _odd_ (not even, -- it's zero-based).
+	if (int($#links/2) eq $#links/2) {
+		error("$file lists a link without a destination.");
+	}
+
+	if (($PACKAGE eq $dh{FIRSTPACKAGE} || $dh{PARAMS_ALL}) && @ARGV) {
+		push @links, @ARGV;
+	}
+
+	# Same test as above, including arguments this time.
+	if (int($#links/2) eq $#links/2) {
+		error("parameters list a link without a destination.");
+	}
+
+	# Now I'd prefer to work with a hash.
+	%links=@links;
+
+	foreach $src (keys %links) {
+		$dest=$links{$src};
+				
+		# Make sure the directory the link will be in exists.
+		$basedir=Dh_Lib::dirname("$TMP/$dest");
+		if (! -e $basedir) {
+			doit("install","-d",$basedir);
+		}
+		
+		# Policy says that if the link is all within one toplevel
+		# directory, it should be relative. If it's between
+		# top level directories, leave it absolute.
+		@src_dirs=split(m:/+:,$src);
+		@dest_dirs=split(m:/+:,$dest);
+		if ($src_dirs[0] eq $dest_dirs[0]) {
+		    	# Figure out how much of a path $src and $dest
+			# share in common.
+			for ($x=0; $x<$#src_dirs && $src_dirs[$x] eq $dest_dirs[$x]; $x++) {}
+
+			# Build up the new src.
+			$src="";
+			for (1..$#dest_dirs - $x) {
+				$src.="../";
+			}
+			# The + 1 is here to include the actual filename.
+			for (1..$#src_dirs - $x + 1) {
+				$src.=$src_dirs[$_]."/";
+			}
+			$src=~s:/$::;
+		}	
+		
+		doit("ln","-sf",$src,"$TMP/$dest");
+	}
+}