90 lines
3.0 KiB
Plaintext
90 lines
3.0 KiB
Plaintext
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#!/usr/bin/env bash
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# NOTE: if the output of this backend has to change (e.g. we change what gets
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# included in the archive, or we change the format of the archive (e.g. tar
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# options, compression ratio or method)), we MUST update the format version
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# in the variable BR_FTM_VERSION_svn, in package/pkg-download.mk.
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# We want to catch any unexpected failure, and exit immediately
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set -e
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# Download helper for svn, to be called from the download wrapper script
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#
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# Options:
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# -q Be quiet.
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# -o FILE Generate archive in FILE.
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# -u URI Checkout from repository at URI.
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# -c REV Use revision REV.
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# -n NAME Use basename NAME.
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# -r Recursive, i.e. use externals
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#
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# Environment:
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# SVN : the svn command to call
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# shellcheck disable=SC1090 # Only provides mk_tar_gz()
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. "${0%/*}/helpers"
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quiet=
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externals=--ignore-externals
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while getopts "${BR_BACKEND_DL_GETOPTS}" OPT; do
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case "${OPT}" in
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q) quiet=-q;;
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o) output="${OPTARG}";;
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u) uri="${OPTARG}";;
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c) rev="${OPTARG}";;
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n) basename="${OPTARG}";;
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r) externals=;;
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:) printf "option '%s' expects a mandatory argument\n" "${OPTARG}"; exit 1;;
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\?) printf "unknown option '%s'\n" "${OPTARG}" >&2; exit 1;;
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esac
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done
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shift $((OPTIND-1)) # Get rid of our options
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# Caller needs to single-quote its arguments to prevent them from
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# being expanded a second time (in case there are spaces in them)
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_svn() {
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if [ -z "${quiet}" ]; then
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printf '%s ' "${SVN}" "${@}"; printf '\n'
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fi
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_plain_svn "$@"
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}
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# Note: please keep command below aligned with what is printed above
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_plain_svn() {
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# shellcheck disable=SC2086 # We want word-splitting for SVN
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eval ${SVN} "${@}"
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}
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# shellcheck disable=SC2086 # externals and quiet may be empty
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_svn export --ignore-keywords ${quiet} ${externals} "${@}" "'${uri}@${rev}'" "'${basename}'"
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# For 'svn info', we only need the credentials, if any; other options
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# would be invalid, as they are intended for 'svn export'.
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# We can also consume the positional parameters, as we'll no longer
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# be calling any other remote-reaching svn command.
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creds=
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while [ ${#} -gt 0 ]; do
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case "${1}" in
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--username=*) creds+=" ${1}"; shift;;
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--password=*) creds+=" ${1}"; shift;;
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--username) creds+=" ${1} ${2}"; shift 2;;
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--password) creds+=" ${1} ${2}"; shift 2;;
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*) shift;;
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esac
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done
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# Get the date of the revision, to generate reproducible archives.
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# The output format is YYYY-MM-DDTHH:MM:SS.mmmuuuZ (i.e. always in the
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# UTC timezone), which we can feed as-is to the --mtime option for tar.
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# In case there is a redirection (e.g. http -> https), just keep the
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# last line (svn outputs everything on stdout)
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# shellcheck disable=SC2086 # creds may be empty
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date="$( _plain_svn info ${creds} "'${uri}@${rev}'" \
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|sed -r -e '/^Last Changed Date: /!d; s///'
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)"
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# Generate the archive.
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# We did a 'svn export' above, so it's not a working copy (there is no .svn
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# directory or file to ignore).
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mk_tar_gz "${basename}" "${basename}" "${date}" "${output}"
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