1 files changed, 98 insertions, 0 deletions
diff --git a/src/lib/librelib b/src/lib/librelib
new file mode 100755
index 0000000..e9d184e
--- /dev/null
+++ b/src/lib/librelib
@@ -0,0 +1,98 @@
+#!/usr/bin/env bash
+# Copyright (C) 2013-2014 Luke Shumaker <lukeshu@sbcglobal.net>
+#
+# License: GNU GPLv2+
+#
+# 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 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
+
+if type gettext &>/dev/null; then
+	_() { gettext "$@"; }
+else
+	_() { echo "$@"; }
+fi
+
+_l() {
+	TEXTDOMAIN='librelib' TEXTDOMAINDIR='/usr/share/locale' "$@"
+}
+
+print() {
+	local mesg="$(_ "$1")"
+	shift
+	printf -- "$mesg\n" "$@"
+}
+
+whitespace_collapse() {
+	tr '\n' '\r' | sed -r \
+			   -e 's/\r/  /g' -e 's/\t/ /g' \
+			   -e 's/(^|[^.!? ]) +/\1 /g' -e 's/([.!?])  +/\1  /g'
+}
+
+prose() {
+	local mesg="$(_ "$(whitespace_collapse <<<"$1")")"; shift
+	printf -- "$mesg" "$@" | fmt -u
+}
+
+cmd=${0##*/}
+usage() {
+	. libremessages
+	print 'Usage: . $(%s LIBRARY)' "$cmd"
+	print 'Usage: %s -h' "$cmd"
+	print "Finds a Bash library file"
+	echo
+	prose "While some libraries can be sourced just by their name because
+	       they are installed in PATH (like libremessages), some are not
+	       installed there (like conf.sh), so a path must be given.
+	       Hardcoding that path is the way of the dark side."
+	echo
+	prose 'By default, it looks for the files in `%s`, but this can be
+	       changed with the environmental variable LIBRETOOLS_LIBDIR.' "$default_libdir"
+	echo
+	print "Example usage:"
+	printf '  . $(%s conf)\n' "$cmd"
+	echo
+	print "Options:"
+	flag '-h' 'Show this message'
+}
+
+main() {
+	if [[ $# != 1 ]]; then
+		_l usage >&2
+		return 2
+	fi
+	if [[ $1 == '-h' ]]; then
+		_l 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
+	_l print '%s: could not find library: %s' "$cmd" "$lib" >&2
+	return 1
+}
+
+main "$@"