#!/usr/bin/env bash

# We want to catch any unexpected failure, and exit immediately
set -e

# Download helper for hg, to be called from the download wrapper script
# Expected arguments:
#   $1: output file
#   $2: hg repo
#   $3: hg cset
#   $4: package's basename (eg. foobar-1.2.3)
# And this environment:
#   HG       : the hg command to call

output="${1}"
repo="${2}"
cset="${3}"
basename="${4}"

${HG} clone --noupdate --rev "${cset}" "${repo}" "${basename}"

${HG} archive --repository "${basename}" --type tgz \
              --prefix "${basename}" --rev "${cset}" \
              "${output}"
