#!/bin/bash
# Inspired by Debian and RedHat run-parts but portable and specific to di-b.
#
# Copyright 2012 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

allowed_regex=${RUN_PARTS_REGEX:-"^[0-9A-Za-z_-]+$"}

set -ue

name=$(basename $0)

usage() {
    echo "usage: $name scripts_directory" >&2
    exit 1
}

output () {
    echo $name $(date) $* >&2
}

if [ $# -lt 1 ] ; then
    usage
fi

target_dir=$1

if ! [ -d $target_dir ] ; then
    output $target_dir must exist and be a directory
    usage
fi

# We specifically only want to sort *by the numbers*.
# Lexical sorting is not guaranteed, and identical numbers may be
# parallelized later
targets=$(find $target_dir -type f -executable -printf '%f\n' | grep -E "$allowed_regex" | LANG=C sort -n)

for target in $targets ; do
    output "Running $target_dir/$target"
    $target_dir/$target
    output "$target completed"
done