#!/bin/sh

# install-magic for VideoteXt
#
# $Id: install-magic,v 1.1 1997/09/14 01:49:18 mb Exp mb $
#
# Copyright (c) 1997 Martin Buck  <martin.buck@bigfoot.com>
# Read COPYING for more information

# This script installs entries for VideoteXt's file types in the system magic
# file.


set -e

if [ $# -ne 2 ]; then
  echo "Usage: $0 magic-file vtx-magic" >&2
  exit 1
fi

trap 'rm -f "$1.vtxnew"' 0

cp -p "$1" "$1.vtxnew"
gawk '
  /^#.*Id: Localstuff/ {
    localfound++
  }
  /^$/ {
    if (localfound == 1) {
      print ""
      system("cat " VTXMAGIC)
      localfound++
    }
  }
  {
    print $0
  }
  END {
    if (!localfound) {
      print ""
      system("cat " VTXMAGIC)
    }
  }
' VTXMAGIC="$2" "$1" > "$1.vtxnew"

ln -f "$1.vtxnew" "$1"