apply-templates.sh

#!/usr/bin/env bash
set -Eeuo pipefail

jqt='.jq-template.awk'
if [ -n "${BASHBREW_SCRIPTS:-}" ]; then
	jqt="$BASHBREW_SCRIPTS/jq-template.awk"
elif [ "$BASH_SOURCE" -nt "$jqt" ]; then
	# https://github.com/docker-library/bashbrew/blob/master/scripts/jq-template.awk
	wget -qO "$jqt" 'https://github.com/docker-library/bashbrew/raw/9f6a35772ac863a0241f147c820354e4008edf38/scripts/jq-template.awk'
fi

generated_warning() {
	cat <<-EOH
		#
		# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
		#
		# PLEASE DO NOT EDIT IT DIRECTLY.
		#

	EOH
}

wpCliVersion="$(jq -r '.wpCliVersion' versions.json)"
export wpCliVersion

versions="$(jq -r 'to_entries | map(select(.value | type == "object")) | map(.key) | map(@sh) | join(" ")' versions.json)"
eval "versions=( $versions )"

for version in "${versions[@]}"; do
    export version

    phpVersions="$(jq -r '.[env.version].phpVersions | map(@sh) | join(" ")' versions.json)"
    eval "phpVersions=( $phpVersions )"

    variants="$(jq -r '.[env.version].variants | map(@sh) | join(" ")' versions.json)"
    eval "variants=( $variants )"

    for phpVersion in "${phpVersions[@]}"; do
        export phpVersion

        for variant in "${variants[@]}"; do
            export variant

            dir="$version/php$phpVersion/$variant"
            mkdir -p "$dir"

            echo "processing $dir ..."

            template="Dockerfile.template"
            if [ -f "variants/$variant/Dockerfile.template" ]; then
                template="variants/$variant/Dockerfile.template"
            fi

            {
              generated_warning
              gawk -f "$jqt" "$template"
            } > "$dir/Dockerfile"

            cp -a bin "$dir/"
            cp -a templates "$dir/"
            cp -a init "$dir/"

            if [ -d "variants/$variant" ]; then
                cp -a "variants/$variant/." "$dir/"
                rm -f "$dir/Dockerfile.template"
            fi
        done
    done
done