support --file - in __debconf_set_selections

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>

cdist/conf/type/__debconf_set_selections/gencode-remote

@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# 2011 Nico Schottelius (nico-cdist at schottelius.org)
+# 2011-2014 Nico Schottelius (nico-cdist at schottelius.org)
 #
 # This file is part of cdist.
 #
@@ -21,6 +21,12 @@
 # Setup selections
 #
 
+filename"$(cat "$__object/parameter/file")"
+
+if [ "$filename" = "-" ]; then
+    filename="$__object/stdin"
+fi
+
 echo "debconf-set-selections << __file-eof"
-cat "$(cat "$__object/parameter/file")"
+cat "$(cat "$filename")"
 echo "__file-eof"

cdist/conf/type/__debconf_set_selections/man.text

@@ -18,6 +18,7 @@ REQUIRED PARAMETERS
 -------------------
 file::
    Use the given filename as input for debconf-set-selections(1)
+   If filename is "-", read from stdin.
 
 
 EXAMPLES
@@ -29,6 +30,10 @@ __debconf_set_selections nslcd --file /path/to/file
 
 # Setup configuration for nslcd from another type
 __debconf_set_selections nslcd --file "$__type/files/preseed/nslcd"
+
+__debconf_set_selections nslcd --file - << eof
+gitolite gitolite/gituser string git
+eof
 --------------------------------------------------------------------------------
 
 
@@ -41,5 +46,5 @@ SEE ALSO
 
 COPYING
 -------
-Copyright \(C) 2011-2013 Nico Schottelius. Free use of this software is
+Copyright \(C) 2011-2014 Nico Schottelius. Free use of this software is
 granted under the terms of the GNU General Public License version 3 (GPLv3).