added tags rework script after Plamen Totev proposal
git-svn-id: https://svn.apache.org/repos/asf/maven/sandbox/trunk@1819632 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/scripts/git/rework-tags.sh b/scripts/git/rework-tags.sh
new file mode 100755
index 0000000..b362c70
--- /dev/null
+++ b/scripts/git/rework-tags.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+
+for tag in $(git tag); do
+ commit_sha=$(git rev-list -n1 "refs/tags/${tag}")
+ commit_message=$(git show --quiet --pretty="format:%B" "${commit_sha}")
+ commit_date=$(git show --quiet --pretty="format:%aI" "${commit_sha}")
+ tree_sha=$(git show --quiet --pretty="format:%T" "${commit_sha}")
+
+ # git show --quiet ${commit_sha}
+
+ # checking if the tag is reachable from master so the script could be ran multiple times.
+ if $( git merge-base --is-ancestor "${tag}" master ) ; then
+ echo "${tag} is reachable from master. Skipping."
+ continue;
+ fi
+
+ if [[ ! ${commit_message} =~ git-svn ]] ; then
+ echo -e "\e[1m${tag} does not point to a SVN commit and will not be modified\e[0m"
+ continue
+ fi
+
+ candidate_commit_sha=$(git rev-list -n1 --grep "\[maven-release-plugin\] prepare release ${tag}$" master);
+ if [ -z ${candidate_commit_sha} ] ; then
+ echo -e "\e[1m${tag} message not as expected from the release plug-in. Skipping.\e[0m"
+ continue
+ fi
+
+ candidate_tree_sha=$(git show --quiet --pretty="format:%T" "${candidate_commit_sha}")
+
+ if [[ ${tree_sha} != ${candidate_tree_sha} ]] ; then
+ echo -e "\e[1m${tag} - the commit created by the release plug-in ${candidate_tree_sha} does not have the same files as the tag ${tree_sha}. Skipping.\e[0m"
+ continue
+ fi
+
+ echo -e "ready to change tag ${tag}\t${commit_date} from ${commit_sha} to ${candidate_commit_sha}"
+ # This will change the author to the current git user but will keep original tag author date
+ # The release date and author are preserved in the release commit.
+ GIT_COMMITTER_DATE="${commit_date}" git tag -f -a -m "${tag} reworked after migration from aggregate svn to split git" "${tag}" "${candidate_commit_sha}" > /dev/null
+done
