#! /bin/sh
#
# Copyright (C) 2006, 2007 John W. Eaton
#
# This file is part of Octave.
# 
# Octave is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 3 of the License, or (at
# your option) any later version.
# 
# Octave is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# You should have received a copy of the GNU General Public License
# along with Octave; see the file COPYING.  If not, see
# <http://www.gnu.org/licenses/>.

SED=${SED:-'sed'}
AWK=${AWK:-'awk'}

F77_TOLOWER=%F77_APPEND_UNDERSCORE%
F77_APPEND_UNDERSCORE=%F77_APPEND_UNDERSCORE%
F77_APPEND_EXTRA_UNDERSCORE=%F77_APPEND_EXTRA_UNDERSCORE%

if $F77_TOLOWER; then
  case_cmd="tolower";
else
  case_cmd="toupper";
fi

if $F77_APPEND_UNDERSCORE; then
  uscore="_";
else
  uscore="";
fi

if $F77_APPEND_EXTRA_UNDERSCORE; then
  awkcmd="$AWK '{ if (\$0 ~ /_/) extra = \"_\"; else extra = \"\"; printf (\"%s%s%s\n\", $case_cmd (\$0), \"$uscore\", extra); }'"
else
  awkcmd="$AWK '{ printf (\"%s%s\n\", tolower (\$0), \"$uscore\"); }'"
fi

$SED -n -e 'y/ABCDEFGHIJLKMNOPQRSTUVWXYZ/abcdefghijlkmnopqrstuvwxyz/; s/^\(      \|	\)[ 	]*\(.*function\|subroutine\|entry\)[ 	]*\([^ 	(]*\).*$/\3/p' | eval $awkcmd