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#!/usr/bin/env bash
# usage: gengodep version go_compiler_path source_prefix go_tags dep_file go_args...
# Copyright (c) Contributors to the Apptainer project, established as
# Apptainer a Series of LF Projects LLC.
# For website terms of use, trademark policy, privacy policy and other
# project policies see https://lfprojects.org/policies
# shellcheck disable=SC2311
# Exit script if you try to use an uninitialized variable.
set -o nounset
# Exit script if a statement returns a non-true return value.
set -o errexit
# Use the error status of the first failure, rather than that of the last item in a pipeline.
set -o pipefail
# Environment Variables
# ---------------------
# this is needed so that the value we are getting from the makefile does
# get propagated down to go list.
declare -rx GOPROXY
# Arguments
# ---------------------
function check_build_tool_version() {
if [[ "${1}" != "-v3" ]] ; then
cat 1>&2 <<-EOT
========================================================================
A non-backwards compatible change has been added to the build system and
it's necessary to start fresh.
Please remove the build directory ("builddir" by default) and run
mconfig again.
========================================================================
EOT
exit 1
fi
}
function go_dependency_template() {
cat <<'TEMPLATE'
{{ with $d := . }}
{{ if not $d.Standard }}
{{ range $d.GoFiles }}
{{ printf "%s/%s\n" $d.Dir . }}
{{ end }}
{{ range $d.CgoFiles }}
{{ printf "%s/%s\n" $d.Dir . }}
{{ end }}
{{ end }}
{{ end }}
TEMPLATE
}
function find_embedded_files () {
local -r module_file="${1}"
grep "go:embed" "${module_file}" | sed -e 's|.* ||'
}
function report_embedded_files() {
local -r module_file="${1}"
local module_directory
module_directory="$(dirname "${module_file}")"
for embedded_file in $(find_embedded_files "${module_file}" ); do
printf '%s/%s\n' "${module_directory}" "${embedded_file}"
done
}
function output_deps_file() {
local -r go="${1}"
local -r source_prefix="${2}"
local -r gotags="${3}"
local -r depfile="${4}"
shift 4
local template dependency_list
template="$(go_dependency_template)"
dependency_list=$(${go} list -deps -e -f "${template}" -tags "${gotags}" "$@" | sort -u)
for module_file in ${dependency_list}; do
printf '%s += %s\n' "${source_prefix}" "${module_file}" >> "${depfile}"
for embedded_file in $(report_embedded_files "${module_file}"); do
printf '%s += %s\n' "${source_prefix}" "${embedded_file}" >> "${depfile}"
done
done
}
function gengodep() {
check_build_tool_version "${1}"
shift
output_deps_file "$@"
}
gengodep "$@"
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