#!/bin/sh -e
# See http://skarnet.org./software/compile.html
if [ \! -d package -o \! -d source ] 
then
	echo "You are not in the right directory." 1>&2 
	exit 100
fi
case "`uname`" in
Linux)		extended_regexp="-r -e" ; no_target_dir=-T ;;
OpenBSD)	extended_regexp=-E ; no_target_dir="" ;;
*BSD)		extended_regexp=-E ; no_target_dir=-h ;;
esac
cwd="`/bin/pwd`"
base_plus_version="`basename "${cwd}"`"
base="`echo "${base_plus_version}" | sed ${extended_regexp} 's/-[[:digit:]][[:alnum:].]*$//'`"
if [ "${base}" != "${base_plus_version}" ]
then
	echo "Creating symlink ${base} -> ${base_plus_version}."
	case "`uname`" in
	OpenBSD)
		ln -s -f -- "${base_plus_version}" "${base}"
		mv -f -- "${base}" ../
		;;
	*)
		ln -s -f -- "${base_plus_version}" ../"${base}"{new}
		mv -f ${no_target_dir} -- ../"${base}"{new} ../"${base}"
		;;
	esac
else
	echo 1>&2 "This is not a versioned package."
fi
exit 0
