#! /bin/bash -e
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
# SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
# SPDX-FileContributor: 2003-22 Bradley M. Bell
# ----------------------------------------------------------------------------
#! /bin/bash
#
message="
usage: adolc_usrparms.sh <dir>
       adolc_usrparms.sh <dir> <bufsize> <tbufsize> show
       adolc_usrparms.sh <dir> <bufsize> <tbufsize> modify

The first usage prints the value of BUFSIZE and TBUFSIZE.
The second usage show how the usrparms.h file would be modified.
The third usage actually modifies the file.

<dir>:
The distribution directory corresponding to adolc; e.g., adolc-1.10.2.
The file where the buffer sizes are specified is <dir>/adolc/usrparms.h.

BUFSIZE:
Buffer size for tapes.

TBUFSIZE:
Buffer size for temporary Taylor store.

<bufsize>:
the value we are changing the Adolc BUFSIZE parameter to.

<tbufsize>:
the value we are changing the Adolc TBUFSIZE parameter to.
"
if [ "$1" == "" ]
then
   echo "$message"
   exit 1
fi
file="$1/adolc/usrparms.h"
if [ ! -e $file ]
then
   echo "adolc_usrparms.sh: cannot find the file $file"
   exit 1
fi
#
# case where we print the value of BUFSIZE and  TBUFSIZE
if [ "$2" == "" ]
then
   grep "^#define T*BUFSIZE" < $file
   exit 0
fi
same="/* Previous: \1\2 */ \3\n#define"
cmd_one="s|^\(#define BUFSIZE *\)\([0-9]*\)\(.*\)|$same BUFSIZE    $2|"
cmd_two="s|^\(#define TBUFSIZE *\)\([0-9]*\)\(.*\)|$same TBUFSIZE   $3|"
if [ "$4" == "show" ]
then
   sed < $file > adolc_usrparms.tmp \
      -e "$cmd_one" -e "$cmd_two"
   diff $file adolc_usrparms.tmp
   exit 0
fi
if [ "$4" == "modify" ]
then
   sed < $file > adolc_usrparms.tmp \
      -e "$cmd_one" -e "$cmd_two"
   diff $file adolc_usrparms.tmp
   mv adolc_usrparms.tmp $file
   echo "Execute the following commands for the change to take effect:"
   echo "cd $1"
   echo "make"
   echo "make install"
   exit 0
fi
echo "$message"
exit 1
