source: trunk/essentials/app-shells/bash/support/mkclone@ 3506

#! /bin/bash
#
# mkclone - symlink every file appearing in $src/MANIFEST to a corresponding
#           file in the target directory ($1).  Directories specified in
#           MANIFEST are created in the target directory
#
# Copyright (C) 1996-2002 Free Software Foundation, Inc.
#
# This program 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, or (at your option)
# any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA.
#
prog=`basename $0`

SRCDIR=src

USAGE="usage: $prog [-m manifest] [-s srcdir] [-v] [-d] [-h] target"
while getopts dhm:s:v opt
do
        case "$opt" in
        m)      MANIFEST=$OPTARG ;;
        s)      SRCDIR=$OPTARG ;;
        v)      verbose=y ;;
        d)      ECHO=echo debug=y ;;
        h)      hardlinks=y ;;
        ?)      echo $USAGE >&2
                exit 2;;
        esac
done

: ${MANIFEST:=${SRCDIR}/MANIFEST}

[ -n "$debug" ] && verbose=

shift $(( $OPTIND - 1 ))

if [ $# -lt 1 ]; then
        echo $USAGE >&2
        exit 2
fi

if [ ! -f $MANIFEST ]; then
        echo "$prog: $MANIFEST: no such file or directory" >&2
        echo "$prog: must be run with valid -s argument or from source directory" >&2
        exit 1
fi

rm_ltmp=false
LINKTEMP=`mktemp -t linktmp.XXXXXXXX 2>/dev/null`
if [ -z "$LINKTEMP" ]; then
        : ${TMPDIR:=/tmp}
        LINKTEMP=${TMPDIR}/linktmp.$$
        rm_ltmp=true
fi

$rm_ltmp && rm -f ${LINKTEMP}
# if the user specified hard links, then do that.  otherwise, try to use
# symlinks if they're present
if [ -n "$hardlinks" ]; then
        LN=ln
elif (ln -s /dev/null ${LINKTEMP}) >/dev/null 2>&1; then
        LN="ln -s"
else
        LN=ln
fi
rm -f ${LINKTEMP}

TARGET=$1

if [ ! -d "$TARGET" ]; then
        mkdir "$TARGET"
fi

echo "${prog}: creating clone of bash source tree (from $SRCDIR) in $TARGET"

cd "$TARGET" || { echo "${prog}: cannot cd to $TARGET" >&2 ; exit 1; }

while read fname type mode
do
        [ -z "$fname" ] && continue

        case "$fname" in
        \#*)    continue ;;