#!/bin/bash
set -e

# CARGO='../nailing-cargo/nailing-cargo cargo' make && make check CARGO='../nailing-cargo/nailing-cargo cargo'


# Why do we need this ?
#
#  https://stackoverflow.com/questions/33025887/how-to-use-a-local-unpublished-crate
#  https://github.com/rust-lang/cargo/issues/1481


lock=${PWD%/*}/.nail.lock
if [ "x$NAILING_CARGO" != "x$lock" ]; then
	NAILING_CARGO=$lock \
	exec with-lock-ex -w "$lock" "$0" "$@"
fi

exec 203<../Cargo.nail
f=Cargo.toml

sed='
/^ *\[dependencies\]/,/^ \[/{
'

exec 204<../Cargo.nail
while read <&204 what where; do
	if [ "x$what" = x- ]; then continue; fi
	if [ "x$what" = 'x#' ]; then continue; fi
	qwhere="${where//\//\\/}"
	sed+='
		s/^'$what' *= *\(\".*\"\) *$/'$what' = { version = \1 }/;
		s/^'$what' *= *{/'$what' = { path = "..\/'"${qwhere}"'", /;
		/^'$what' *=/ s/version *= *\"[^"]*\"//;
		/^'$what' *=/ s/, *\([,}]\)/\1/;
	'
done
sed+='}
'

exec 204<../Cargo.nail
while read <&204 what where; do
	if [ "x$what" = 'x#' ]; then continue; fi
	wf=../$where/$f
	rm -f $wf.nailing~
	sed <$wf >$wf.nailing~ "$sed"
done

exec 204<../Cargo.nail
while read <&204 what where; do
	if [ "x$what" = 'x#' ]; then continue; fi
	wf=../$where/$f
	if ! test -e $wf.unnailed~; then
		ln $wf $wf.unnailed~
	fi
done

trap '
	set +e
	while read <&203 what where; do
		if [ "x$what" = "x#" ]; then continue; fi
		wf=../$where/$f
		if test -e $wf.unnailed~; then
			rm -f $wf.nailed~
			ln $wf $wf.nailed~
			mv -f $wf.unnailed~ $wf
		fi
	done
	echo >&2 'Unnailed'
' EXIT

exec 204<../Cargo.nail
printf >&2 'Nailing'
while read <&204 what where; do
	if [ "x$what" = 'x#' ]; then continue; fi
	wf=../$where/$f
	printf >&2 ' %s' "$what"
	if cmp -s $wf.nailed~ $wf.nailing~; then
		mv -f $wf.nailed~ $wf
		rm -f $wf.nailing
	else
		mv -f $wf.nailing~ $wf
		rm -f $wf.nailed
	fi
done
echo >&2

"$@"