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path: root/bin/get-source-info
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#!/bin/sh

# shellcheck disable=SC2119,SC2120

# get-source-info <package> <repository> <git_revision> <mod_git_revision>
# create .SRCINFO from PKGBUILD within git repositories, output to stdout,
# cache it on https://mirror.archlinux32.org/pkginfo

# build .SRCINFO if necessary, fetch it from cache when already computed,
# 
# this can be used to cache srcinfo (especially for blacklisted packages)
# as it uses quite some time to compute

# shellcheck source=../lib/load-configuration
. "${0%/*}/../lib/load-configuration"

# shellcheck disable=SC2016
usage() {
  >&2 echo ''
  >&2 echo 'get-source-info <package> <repository> <git_revision> <mod_git_revision> [options]:'
  >&2 echo '  get package srcinfo'
  >&2 echo ''
  >&2 echo 'possible options:'
  >&2 echo '  -c|--cache:'
  >&2 echo '    Respect the cache when fetching pkginfo'
  >&2 echo '  -h|--help:'
  >&2 echo '    Show this help and exit.'
  [ -z "$1" ] && exit 1 || exit "$1"
}

eval set -- "$(
  getopt -o hc \
    --long help \
    --long cache \
    -n "$(basename "$0")" -- "$@" || \
    echo usage
  )"

respect_cache=0

while true
do
  case "$1" in
    -h|--help)
      usage 0
      ;;
    -c|--cache)
      respect_cache=1
      ;;
    --)
      shift
      break
    ;;
    *)
      >&2 printf 'Whoops, forgot to implement option "%s" internally.\n' \
        "$1"
      exit 42
    ;;
  esac
  shift
done

if [ $# -ne 4 ]; then
  usage 1
fi

tmp_dir=$(mktemp -d "${work_dir}/tmp.get-source-info.XXXXXX")
trap 'rm -rf --one-file-system "${tmp_dir}"' EXIT

PACKAGE="$1"
REPOSITORY="$2"
GIT_REVISION="$3"
MOD_GIT_REVISION="$4"
SRCINFO="${tmp_dir}/SRCINFO"

if [ "${respect_cache}" = 1 ]; then
  curl -LSs "https://buildmaster.archlinux32.org/pkginfo/${PACKAGE}-${REPOSITORY}-${GIT_REVISION}-${MOD_GIT_REVISION}" \
  >"${SRCINFO}"
else
  make_source_info "${PACKAGE}" "${REPOSITORY}" "${GIT_REVISION}" "${MOD_GIT_REVISION}" "${SRCINFO}"
fi

cat "${SRCINFO}"