# Copyright 2016 The Fuchsia Authors. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1.  Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
# 2.  Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

path_to_stamp() {
    stamps_dir=$FUCHSIA_CROSS_ROOT/stamps
    __path_to_stamp=$stamps_dir/$1.stamp
}

has_stamp() {
    path_to_stamp $1
    
    if [ -f "$__path_to_stamp" ]
    then
        __has_stamp=true
    else
        __has_stamp=false
    fi
}

make_stamp() {
    mkdir -p $FUCHSIA_CROSS_ROOT/stamps
    path_to_stamp $1
    touch $__path_to_stamp
}

require_deps() {
    until [ -z "$1" ]             # Until uses up arguments passed...
    do
        builder_name=build_$1
        has_stamp $builder_name
        if [ $__has_stamp = "false" ]; then
            builder_path=$(dirname $BASH_SOURCE)/$builder_name.sh
            source $builder_path
        fi
        shift
    done
}