#!/bin/bash

# Generate a group file from the _begin_fstest call in each test.

if [ "$1" = "--help" ]; then
	echo "Usage: (cd tests/XXX/ ; ../../tools/mkgroupfile [output])"
	exit 1
fi

test_dir="$PWD"
groupfile="$1"

if [ ! -x ../../check ]; then
	echo "$0: Run this from tests/XXX/."
	exit 1
fi

generate_groupfile() {
	cat << ENDL
# QA groups control file, automatically generated.
# See _begin_fstest in each test for details.

ENDL
	cd ../../
	export GENERATE_GROUPS=yes
	grep -R -l "^_begin_fstest" "$test_dir/" 2>/dev/null | while read testfile; do
		test -x "$testfile" && "$testfile"
	done | sort -g
	cd "$test_dir"
}

if [ -z "$groupfile" ] || [ "$groupfile" = "-" ]; then
	# Dump the group file to stdout and exit
	generate_groupfile
	exit 0
fi

# Otherwise, write the group file to disk somewhere.
ngroupfile="${groupfile}.new"
rm -f "$ngroupfile"
generate_groupfile >> "$ngroupfile"
mv "$ngroupfile" "$groupfile"