add --state parameter to __link type which allows removal of links

Signed-off-by: Steven Armstrong <steven@icarus.ethz.ch>

conf/type/__link/gencode-remote

@@ -39,4 +39,17 @@ case "$type" in
    ;;
 esac
 
-echo ln ${lnopt} -f \"$source\" \"$destination\"
+state_should="$(cat "$__object/parameter/state")"
+case "$state_should" in
+   present)
+      echo ln ${lnopt} -f \"$source\" \"$destination\"
+   ;;
+   absent)
+      echo rm \"$destination\"
+   ;;
+   *)
+      echo "Unknown state" >&2
+      exit 1
+   ;;
+esac
+

conf/type/__link/man.text

@@ -25,7 +25,8 @@ type::
 
 OPTIONAL PARAMETERS
 -------------------
-None.
+state::
+   'present' or 'absent', defaults to 'present'
 
 
 EXAMPLES

conf/type/__link/manifest

@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# 2011 Steven Armstrong (steven-cdist at armstrong.cc)
+#
+# This file is part of cdist.
+#
+# cdist 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 3 of the License, or
+# (at your option) any later version.
+#
+# cdist 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 cdist. If not, see <http://www.gnu.org/licenses/>.
+#
+
+if [ -f "$__object/parameter/state" ]; then
+   state="$(cat "$__object/parameter/state")"
+else
+   echo "present" > "$__object/parameter/state"
+fi