mirror of
https://github.com/godotengine/buildroot.git
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91e776b5af
Currently all download helpers accepts the local output file, the remote locations, the changesets and so on... as positional arguments. This was well and nice when that's was all we needed. But then we added an option to quiesce their verbosity, and that was shoehorned with a trivial getopts, still keeping all the existing positional arguments as... positional arguments. Adding yet more options while keeping positional arguments will not be very easy, even if we do not envision any new option in the foreseeable future (but 640K ought to be enough for everyone, remember? ;-) ). Change all helpers to accept a set of generic options (-q for quiet and -o for the output file) as well as helper-specific options (like -r for the repository, -c for a changeset...). Maxime: Changed -R to -r for recurse (only for the git backend) Changed -r to -u for URI (for all backend) Change -R to -c for cset (for CVS and SVN backend) Add the export of the BR_BACKEND_DL_GETOPTS so all the backend wrapper can use the same option easily Now all the backends use the same common options. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
106 lines
3.7 KiB
Bash
Executable File
106 lines
3.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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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 git, 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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# -r Clone and archive sub-modules.
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# -o FILE Generate archive in FILE.
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# -u URI Clone from repository at URI.
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# -c CSET Use changeset CSET.
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# -n NAME Use basename NAME.
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#
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# Environment:
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# GIT : the git command to call
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verbose=
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recurse=0
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while getopts "${BR_BACKEND_DL_GETOPTS}" OPT; do
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case "${OPT}" in
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q) verbose=-q; exec >/dev/null;;
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r) recurse=1;;
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o) output="${OPTARG}";;
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u) uri="${OPTARG}";;
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c) cset="${OPTARG}";;
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n) basename="${OPTARG}";;
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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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_git() {
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eval ${GIT} "${@}"
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}
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# Try a shallow clone, since it is faster than a full clone - but that only
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# works if the version is a ref (tag or branch). Before trying to do a shallow
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# clone we check if ${cset} is in the list provided by git ls-remote. If not
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# we fall back on a full clone.
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#
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# Messages for the type of clone used are provided to ease debugging in case of
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# problems
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git_done=0
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if [ -n "$(_git ls-remote "'${uri}'" "'${cset}'" 2>&1)" ]; then
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printf "Doing shallow clone\n"
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if _git clone ${verbose} "${@}" --depth 1 -b "'${cset}'" "'${uri}'" "'${basename}'"; then
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git_done=1
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else
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printf "Shallow clone failed, falling back to doing a full clone\n"
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fi
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fi
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if [ ${git_done} -eq 0 ]; then
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printf "Doing full clone\n"
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_git clone ${verbose} "${@}" "'${uri}'" "'${basename}'"
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fi
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pushd "${basename}" >/dev/null
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# Try to get the special refs exposed by some forges (pull-requests for
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# github, changes for gerrit...). There is no easy way to know whether
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# the cset the user passed us is such a special ref or a tag or a sha1
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# or whatever else. We'll eventually fail at checking out that cset,
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# below, if there is an issue anyway. Since most of the cset we're gonna
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# have to clone are not such special refs, consign the output to oblivion
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# so as not to alarm unsuspecting users, but still trace it as a warning.
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if ! _git fetch origin "'${cset}:${cset}'" >/dev/null 2>&1; then
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printf "Could not fetch special ref '%s'; assuming it is not special.\n" "${cset}"
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fi
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# Checkout the required changeset, so that we can update the required
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# submodules.
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_git checkout -q "'${cset}'"
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# Get date of commit to generate a reproducible archive.
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# %cD is RFC2822, so it's fully qualified, with TZ and all.
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date="$( _git log -1 --pretty=format:%cD )"
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# There might be submodules, so fetch them.
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if [ ${recurse} -eq 1 ]; then
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_git submodule update --init --recursive
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fi
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# We do not want the .git dir; we keep other .git files, in case they
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# are the only files in their directory.
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# The .git dir would generate non reproducible tarballs as it depends on
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# the state of the remote server. It also would generate large tarballs
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# (gigabytes for some linux trees) when a full clone took place.
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rm -rf .git
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popd >/dev/null
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# Generate the archive, sort with the C locale so that it is reproducible
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find "${basename}" -not -type d >"${basename}.list"
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LC_ALL=C sort <"${basename}.list" >"${basename}.list.sorted"
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# Create GNU-format tarballs, since that's the format of the tarballs on
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# sources.buildroot.org and used in the *.hash files
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tar cf - --numeric-owner --owner=0 --group=0 --mtime="${date}" --format=gnu \
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-T "${basename}.list.sorted" >"${output}.tar"
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gzip -6 -n <"${output}.tar" >"${output}"
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