added dvi and djvu support

src/filters/rclps

@@ -1,5 +1,5 @@
 #!/bin/sh
-# @(#$Id: rclps,v 1.5 2006-01-27 13:37:31 dockes Exp $  (C) 2004 J.F.Dockes
+# @(#$Id: rclps,v 1.6 2006-02-03 10:53:35 dockes Exp $  (C) 2004 J.F.Dockes
 # Parts taken from Estraier:
 #================================================================
 # Estraier: a personal full-text search system
@@ -34,6 +34,11 @@ then
 fi
 
 infile="$1"
+if test X$infile = X- ; then
+  cmd=$decoder
+else
+  cmd="$decoder $1"
+fi
 
 iscmd()
 {
@@ -62,7 +67,7 @@ checkcmds()
 checkcmds $decoder iconv awk
 
 # check the input file existence
-if test ! -f "$infile"
+if test X$infile != X- -a ! -f "$infile"
 then
   printf '%s: %s: no such file\n' "$progname" "$infile"
   exit 1