versionglob="[0-9].[0-9]*.[0-9]*"
devsuffix="~dev"
-# automatically assign version
+# automatically assign *development* version
#
# handles the following cases:
#
-# 1. commit is directly tagged. print that.
-#
-# 2. commit is on main or a development branch, the nearest tag is older
+# * commit is on main or a development branch, the nearest tag is older
# than commit where this branch joins main.
# -> take greatest version tag in repo X.Y.Z and assign X.(Y+1).0
#
-# 3. commit is on a release branch, the nearest tag is newer
+# * commit is on a release branch, the nearest tag is newer
# than the commit where this branch joins main.
# -> take nearest tag X.Y.Z and assign X.Y.(Z+1)
-tagged=$(git tag --points-at "$commit")
-
-if [[ -n "$tagged" ]] ; then
- echo $tagged
-else
- # 1. get the nearest tag with 'git describe'
- # 2. get the merge base between this commit and main
- # 3. if the tag is an ancestor of the merge base,
- # (tag is older than merge base) increment minor version
- # else, tag is newer than merge base, so increment point version
+# 1. get the nearest tag with 'git describe'
+# 2. get the merge base between this commit and main
+# 3. if the tag is an ancestor of the merge base,
+# (tag is older than merge base) increment minor version
+# else, tag is newer than merge base, so increment point version
- nearest_tag=$(git describe --tags --abbrev=0 --match "$versionglob" "$commit")
- merge_base=$(git merge-base origin/main "$commit")
+nearest_tag=$(git describe --tags --abbrev=0 --match "$versionglob" "$commit")
+merge_base=$(git merge-base origin/main "$commit")
- if git merge-base --is-ancestor "$nearest_tag" "$merge_base" ; then
- # x.(y+1).0~devTIMESTAMP, where x.y.z is the newest version that does not contain $commit
- # grep reads the list of tags (-f) that contain $commit and filters them out (-v)
- # this prevents a newer tag from retroactively changing the versions of everything before it
- v=$(git tag | grep -vFf <(git tag --contains "$commit") | sort -Vr | head -n1 | perl -pe 's/(\d+)\.(\d+)\.\d+.*/"$1.".($2+1).".0"/e')
- else
- # x.y.(z+1)~devTIMESTAMP, where x.y.z is the latest released ancestor of $commit
- v=$(echo $nearest_tag | perl -pe 's/(\d+)$/$1+1/e')
- fi
- isodate=$(TZ=UTC git log -n1 --format=%cd --date=iso "$commit")
- ts=$(TZ=UTC date --date="$isodate" "+%Y%m%d%H%M%S")
- echo "${v}${devsuffix}${ts}"
+if git merge-base --is-ancestor "$nearest_tag" "$merge_base" ; then
+ # x.(y+1).0~devTIMESTAMP, where x.y.z is the newest version that does not contain $commit
+ # grep reads the list of tags (-f) that contain $commit and filters them out (-v)
+ # this prevents a newer tag from retroactively changing the versions of everything before it
+ v=$(git tag | grep -vFf <(git tag --contains "$merge_base") | sort -Vr | head -n1 | perl -pe 's/(\d+)\.(\d+)\.\d+.*/"$1.".($2+1).".0"/e')
+else
+ # x.y.(z+1)~devTIMESTAMP, where x.y.z is the latest released ancestor of $commit
+ v=$(echo $nearest_tag | perl -pe 's/(\d+)$/$1+1/e')
fi
+isodate=$(TZ=UTC git log -n1 --format=%cd --date=iso "$commit")
+ts=$(TZ=UTC date --date="$isodate" "+%Y%m%d%H%M%S")
+echo "${v}${devsuffix}${ts}"