lib/Tools/expandshort

improved usage msg;

#!/bin/bash -norc
#
# $Id$
#
# DESCRIPTION: expand shorthand goal commands


PRG=$(basename $0)

function usage()
{
  echo
  echo "Usage: $PRG [FILES ...]"
  echo
  echo "  Expand shorthand goal commands in FILES.  Also contracts uses of"
  echo "  resolve_tac, dresolve_tac, eresolve_tac, rewrite_goals_tac on"
  echo "  1-element lists; furthermore expands tabs, since they are now"
  echo "  forbidden in ML string constants."
  echo
  echo "  Renames old versions of FILES by appending \"~~\"."
  echo
  exit 1
}

function fail()
{
  echo "$1" >&2
  exit 2
}


## main

[ "$1" = "-?" ] && usage

for f in "$@"
do
echo Expanding shorthands in $f. \ Backup file is $f~~
if [ ! -s $f ]; then echo "File $f is EMPTY!!"; exit 1; fi
mv $f $f~~; sed -e '
s/\<by(/by (/
s/\<ba \([0-9][0-9]*\);/by (assume_tac \1);/
s/\<br \([^;]*\) \([0-9][0-9]*\);/by (rtac \1 \2);/
s/\<brs \([^;]*\) \([0-9][0-9]*\);/by (resolve_tac \1 \2);/
s/\<bd \([^;]*\) \([0-9][0-9]*\);/by (dtac \1 \2);/
s/\<bds \([^;]*\) \([0-9][0-9]*\);/by (dresolve_tac \1 \2);/
s/\<be \([^;]*\) \([0-9][0-9]*\);/by (etac \1 \2);/
s/\<bes \([^;]*\) \([0-9][0-9]*\);/by (eresolve_tac \1 \2);/
s/\<bw \([^;]*\);/by (rewtac \1);/
s/\<bws \([^;]*\);/by (rewrite_goals_tac \1);/
s/\<auto *()/by (Auto_tac())/
s/dresolve_tac *\[\([a-zA-Z0-9_]*\)\] */dtac \1 /g
s/eresolve_tac *\[\([a-zA-Z0-9_]*\)\] */etac \1 /g
s/resolve_tac *\[\([a-zA-Z0-9_]*\)\] */rtac \1 /g
s/rewrite_goals_tac *\[\([a-zA-Z0-9_]*\)\]\( *\)/rewtac \1\2/g
s/rtac *(\([a-zA-Z0-9_]*\)  *RS  *ssubst)  */stac \1 /g
' $f~~ | expand > $f
done
echo Finished.