support/download/svn: generate reproducible svn archives

To generate a reproducible archive from a svn repository mainly the same
aproach is done like for the archives from a git repository.

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>
[yann.morin.1998@free.fr: get the date of the revision]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Heiko Thiery 2019-12-22 22:31:49 +01:00 committed by Yann E. MORIN
parent 9fa2add810
commit 89f5e98932

View File

@ -38,4 +38,26 @@ _svn() {
_svn export ${verbose} "${@}" "'${uri}@${rev}'" "'${basename}'"
tar czf "${output}" "${basename}"
# Get the date of the revision, to generate reproducible archives.
# The output format is YYYY-MM-DDTHH:MM:SS.mmmuuuZ (i.e. always in the
# UTC timezone), which we can feed as-is to the --mtime option for tar.
# In case there is a redirection (e.g. http -> https), just keep the
# last line (svn outputs everything on stdout)
date="$( _svn info --show-item last-changed-date "'${uri}@${rev}'" |tail -n 1 )"
# Generate the archive, sort with the C locale so that it is reproducible.
# We do not want the .svn dir; we keep other .svn files, in case they are the
# only files in their directory.
find "${basename}" -not -type d \
-and -not -path "./.svn/*" >"${output}.list"
LC_ALL=C sort <"${output}.list" >"${output}.list.sorted"
# Create GNU-format tarballs, since that's the format of the tarballs on
# sources.buildroot.org and used in the *.hash files
tar cf - --transform="s#^\./#${basename}/#" \
--numeric-owner --owner=0 --group=0 --mtime="${date}" --format=gnu \
-T "${output}.list.sorted" >"${output}.tar"
gzip -6 -n <"${output}.tar" >"${output}"
rm -f "${output}.list"
rm -f "${output}.list.sorted"