#! /bin/sh
# -*-sh-*-
#
# $Id: mkaclocal.in,v 1.2 1997/09/11 09:06:33 mdw Exp $
#
# Create an `aclocal.m4' file containing the right macros.
#
# (c) 1997 Mark Wooding
#

#----- Licensing notice -----------------------------------------------------
#
# This file is part of the Common Files Distribution (`common').
#
# `Common' 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 2 of the License, or
# (at your option) any later version.
#
# `Common' 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 `common'; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

set -e

# --- Configuration variables ---

prefix=@prefix@
exec_prefix=@exec_prefix@
bindir=@bindir@
datadir=@datadir@/@PACKAGE@

# --- Parse command line ---

mode=x
out="aclocal.m4"
in="configure.in"
stdlib=true

while [ $# -gt 0 ]; do
  case $1 in
    -h | --h | --he | --hel | --help)
      cat <<EOF
Usage: mkaclocal [-lx] [-c CONFIG] [-o OUTPUT] [LIBRARY...]

In \`extract' mode (-x, default), constructs an \`aclocal.m4' file containing
the right macros for the \`configure.in' script CONFIG (by default this is
\`configure.in').  The output is written to OUTPUT, or \`aclocal.m4' if none
was specified.

In addition to libraries specified on the command line, the files
\`aclocal.glob' and \`aclocal.site' contained in the shared file repository,
and \`aclocal.lib' in the current directory are also searched.

If \`aclocal.lib' contains the string \`*@--TOP--@*', the preceding text is
written at the top of any output file generated.

In \`list' mode (-l), lists the macros defined in the various libraries.

Options:

-h, --help		Print this help text.
-v, --version		Print the program's version number.
-l, --list		List chunks defined in text libraries.
-x, --extract		Extract chunks from text libraries (default).
-n, --no-stdlib		Don't read from the standard libraries.
-c, --config=CONFIG	Read CONFIG, not \`configure.in', to decide which
			macros need extracting.
-o, --output=OUTPUT	Extract chunks to OUTPUT, not \`aclocal.m4'.
EOF
      exit 0
      ;;
    -v | --v | --ve | --ver | --vers | --versi | --versio | --version)
      version=`echo '$Revision: 1.2 $' |
	sed -n -e 's;^.*: \([0-9.]*\) *\\$;\1;p'`
      echo "mkaclocal $version; Common Files Distribution version @VERSION@"
      exit 0
      ;;
    -c | --c | --co | --con | --conf | --confi | --config)
      in="$2";
      shift
      ;;
    -c*)
      in=`echo $1 | sed -e 's/^-[a-z]//'`
      ;;
    --c=* | --co=* | --con=* | --conf=* | --confi=* | --config=*)
      in=`echo $1 | sed -e 's/^--[a-z]*=//'`
      ;;
    -o | --o | --ou | --out | --outp | --outpu | --output)
      out="$2";
      shift
      ;;
    -o*)
      out=`echo $1 | sed -e 's/^-[a-z]//'`
      ;;
    --o=* | --ou=* | --out=* | --outp=* | --outpu=* | --output=*)
      out=`echo $1 | sed -e 's/^--[a-z]*=//'`
      ;;
    -n | --no-s* | --no-st* | --no-std* | --no-stdl* | \
    --no-stdli* | --no-stdlib)
      stdlib=false
      ;;
    -l | --l | --li | --lis | --list)
      mode=l
      ;;
    -x | --e | --ex | --ext | --extr | --extra | --extrac | --extract)
      mode=x
      ;;
    --)
      shift
      break
      ;;
    -)
      break
      ;;
    -*)
      echo "mkaclocal: unknown option \`$1'" >&2
      exit 1
      ;;
    *)
      break
      ;;
  esac
  shift
done

if $stdlib; then
  set -- \
    `test -r $datadir/aclocal.site && echo "$datadir/aclocal.site"` \
    `test -r ./aclocal.lib && echo "./aclocal.lib"` \
    "$@"
else
  set -- \
    `test -r ./aclocal.lib && echo "./aclocal.lib"` \
    "$@"
fi

# --- Now do the job ---

case $mode in

  l)
    $bindir/txtlib -l "$@" | sort | uniq
    ;;

  x)
    t=${TMPDIR-/tmp}/mkaclocal.$$
    doaclocal=false
    if $stdlib && [ $out = aclocal.m4 ]; then
      doaclocal=true
      out=acinclude.m4
    fi
    if mkdir -m700 $t; then :
    else
      echo >&2 "mkaclocal: cculd not create temporary directory"
      exit 1
    fi
    echo -NOTICE- >$t/a
    created=no

    $bindir/txtlib -l "$@" | sort | uniq | while read LINE; do
      echo "/$LINE/ i\\
$LINE"
    done >$t/sed

    until { echo -NOTICE-; sed -n -f $t/sed $in; } | sort | uniq >$t/b
          cmp -s $t/a $t/b
    do
      $bindir/txtlib "$@" <$t/b >$out.tmp
      in=$out.tmp
      mv $t/b $t/a
      created=yes
    done

    if [ "$created" = "yes" ]; then
      { test -r ./aclocal.lib &&
	  grep "\*@--TOP--@\*" ./aclocal.lib >/dev/null &&
	  sed -e "/\*@--TOP--@\*/, $ d" ./aclocal.lib
	cat $out.tmp
      } >$out.new
      mv $out.new $out
    else
      rm -f $out
    fi

    rm -fr $t $out.tmp
    if $doaclocal; then aclocal; fi
    ;;
esac