#!/bin/sh
set -e -f -u ${TRACE:+-x}
OCAMLPATH=${OCAMLPATH:-src}
name=${name:-$(find $(printf %s "$OCAMLPATH" | tr : ' ') \
	 -type f -name "META.*" -printf %f -quit | \
	sed -e '1s/^META\.//;q')}
version=$(OCAMLPATH="$OCAMLPATH" ocamlfind query -format '%(version)' "$name")
diff=""
if [ ! ${version_no_git:+set} ] && which git >/dev/null
 then
	version_pattern=$(printf %s "$version" | sed -e 's/\./\\./g')
	tags=$(git tag --points-at HEAD |
		sed -e "/^v$version_pattern/d;s/^/+/" |
		tr -d '\n')
	if [ -n "$tags" ]
	 then version="$version$tags"
	elif [ -z "$(git tag --points-at HEAD --list "v$version_pattern")" ]
	 then version="$version+git$(git log -1 --pretty='%h')"
	 fi
	if [ ! ${version_no_date:+set} ] && ! git diff --quiet
	 then diff="+date$(date +%s)"
	 fi;
 elif [ ${version_date:+set} ]
 then diff="+date$(date +%s)"
 fi
printf '%s%s\n' "$version" "$diff"