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#!/bin/bash
# Copyright (c) 2013 by Luke Shumaker <lukeshu@sbcglobal.net>
#
# 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
default_libdir=/usr/lib/libretools
print() {
fmt=$1; shift
printf -- "$fmt\n" "$@"
}
cmd=${0##*/}
usage() {
. libremessages
print 'Usage: . $(%s LIBRARY)' "$cmd"
print "Finds a shell library file"
echo
print "While some libraries can be sourced just by their name because"
print "they are installed in PATH (like libremessages), some are not"
print "installed there (like conf.sh), so a path must be given."
print "Hardcoding that path is the way of the dark side."
echo
print "By default, it looks for the files in '%s'," "$default_libdir"
print "but this can be changed with the environmental variable"
print "LIBRETOOLS_LIBDIR."
echo
print "Example usage:"
print ' . $(librelib conf.sh)'
}
main() {
if [[ $# != 1 ]]; then
usage >&2
return 2
fi
if [[ $1 == '-h' ]]; then
usage
return 0;
fi
if [[ -z $LIBRETOOLS_LIBDIR ]]; then
export LIBRETOOLS_LIBDIR=$default_libdir
fi
lib=$1
lib=${lib#libre}
lib=${lib%.sh}
for file in ${lib} libre${lib} ${lib}.sh libre${lib}.sh; do
if [[ -f "$LIBRETOOLS_LIBDIR/$file" ]]; then
printf '%s\n' "$LIBRETOOLS_LIBDIR/$file"
return 0;
fi
done
return 1
}
main "$@"
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