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update-third-party: update from upstream

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Update to `update-common.sh` from commit 958a2cd1b9 in

    https://gitlab.kitware.com/utils/git-import-third-party
This commit is contained in:
Brad King
2019-03-21 12:37:09 -04:00
parent fac093802a
commit 775c8b21da
1 changed files with 20 additions and 4 deletions
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Utilities/Scripts/update-third-party.bash
+20 -4
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@@ -71,8 +71,6 @@ warn () {
readonly regex_date='20[0-9][0-9]-[0-9][0-9]-[0-9][0-9]'
readonly basehash_regex="$name $regex_date ([0-9a-f]*)"
readonly basehash="$( git rev-list --author="$ownership" --grep="$basehash_regex" -n 1 HEAD )"
readonly upstream_old_short="$( git cat-file commit "$basehash" | sed -n '/'"$basehash_regex"'/ {s/.*(//;s/)//;p}' | egrep '^[0-9a-f]+$' )"
########################################################################
# Sanity checking
@@ -87,6 +85,18 @@ readonly upstream_old_short="$( git cat-file commit "$basehash" | sed -n '/'"$ba
die "'repo' is empty"
[ -n "$tag" ] || \
die "'tag' is empty"
# Check for an empty destination directory on disk. By checking on disk and
# not in the repo it allows a library to be freshly re-inialized in a single
# commit rather than first deleting the old copy in one commit and adding the
# new copy in a seperate commit.
if [ ! -d "$(git rev-parse --show-toplevel)/$subtree" ]; then
readonly basehash=""
else
readonly basehash="$( git rev-list --author="$ownership" --grep="$basehash_regex" -n 1 HEAD )"
fi
readonly upstream_old_short="$( git cat-file commit "$basehash" | sed -n '/'"$basehash_regex"'/ {s/.*(//;s/)//;p}' | egrep '^[0-9a-f]+$' )"
[ -n "$basehash" ] || \
warn "'basehash' is empty; performing initial import"
readonly do_shortlog="${shortlog-false}"
@@ -104,6 +114,8 @@ trap "rm -rf '$workdir'" EXIT
git clone "$repo" "$upstreamdir"
if [ -n "$basehash" ]; then
# Remove old worktrees
git worktree prune
# Use the existing package's history
git worktree add "$extractdir" "$basehash"
# Clear out the working tree
@@ -163,13 +175,17 @@ popd
if [ -n "$basehash" ]; then
git merge --log -s recursive "-Xsubtree=$subtree/" --no-commit "upstream-$name"
else
# Note: on Windows 'git merge --help' will open a browser, and the check
# will fail, so use the flag by default.
unrelated_histories_flag=""
if git merge --help | grep -q -e allow-unrelated-histories; then
if git --version | grep -q windows; then
unrelated_histories_flag="--allow-unrelated-histories "
elif git merge --help | grep -q -e allow-unrelated-histories; then
unrelated_histories_flag="--allow-unrelated-histories "
fi
readonly unrelated_histories_flag
git fetch "$extractdir" "upstream-$name:upstream-$name"
git fetch "$extractdir" "+upstream-$name:upstream-$name"
git merge --log -s ours --no-commit $unrelated_histories_flag "upstream-$name"
git read-tree -u --prefix="$subtree/" "upstream-$name"
fi