redo the library system; avoid hard-coded paths

 * install all library files to $(libexecdir)/libretools, instead of
   - $(bindir)
   - $(datadir)/libretools
   - $(datadir)/devtools
 * symlink the executable library files into $(bindir)
 * add the tool `librelib`
 * instead of ". /path/to/lib.sh", use ". $(librelib lib.sh)"
 * mark all libraries with shebangs of what options they support
 * move blacklist.sh to libreblacklist

1 files changed, 60 insertions, 0 deletions

diff --git a/src/librelib b/src/librelib
new file mode 100755
index 0000000..22811db
--- /dev/null
+++ b/src/librelib
@@ -0,0 +1,60 @@
+#!/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
+
+cmd=${0##*/}
+usage() {
+	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 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 [[ -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 "$@"