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#!/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
#
# Call it as:
#   .../hg [-q] OUT_FILE REPO_URL CSET BASENAME
#
# Environment:
#   HG       : the hg command to call

verbose=
while getopts :q OPT; do
    case "${OPT}" in
    q)  verbose=-q;;
    \?) printf "unknown option '%s'\n" "${OPTARG}" >&2; exit 1;;
    esac
done
shift $((OPTIND-1))

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

${HG} clone ${verbose} --noupdate "${repo}" "${basename}"

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