Added gitsvn.sh script to build a mirror of the subversion repository…

… on github.

git-svn-id: https://svn.eiffel.com/eiffelstudio/trunk@96066 8089f293-4706-0410-a29e-feb5c42a2edf

gitsvn.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -x
+
+PROJECT_ROOT=/home/svn/EiffelStudio.git
+SVN_REPO=https://svn.eiffel.com/eiffelstudio/trunk
+GIT_REPO=git@github.com:EiffelSoftware/EiffelStudio.git
+SVN_LAYOUT="--trunk=."
+
+SVN_CLONE="${PROJECT_ROOT}/svn-clone"
+GIT_BARE="${PROJECT_ROOT}/git-bare-tmp"
+
+if [ ! -d "${PROJECT_ROOT}" ]; then
+	echo Directory "${PROJECT_ROOT}" does not exist.
+	exit 1
+else
+	cd "${PROJECT_ROOT}"
+
+	if [ ! -d "${SVN_CLONE}" ]; then
+		git svn clone "${SVN_REPO}" "${SVN_LAYOUT}" "${SVN_CLONE}"
+		cd "${SVN_CLONE}"
+	else
+		cd "${SVN_CLONE}"
+		git remote rm bare || echo "failed to delete remote:bare, proceeding anyway"
+			# We perform a checkout because with some svn files without a 
+			# svn:eol-style native property, gits get confused and will mark them
+			# as modified even if we just did a rebase before.
+		git checkout .
+		git svn rebase --fetch-all
+	fi
+
+	git remote add bare "${GIT_BARE}"
+	git config remote.bare.push 'refs/remotes/*:refs/heads/*'
+
+	if [ -d "${GIT_BARE}" ]; then
+		rm -rf "${GIT_BARE}"
+	fi
+
+	mkdir -p "${GIT_BARE}"
+	cd "${GIT_BARE}"
+	git init --bare .
+	git symbolic-ref HEAD refs/heads/trunk
+
+	cd "${SVN_CLONE}"
+	git push bare
+
+	cd "${GIT_BARE}"
+	git branch -m trunk master
+# To uncomment if we have some tags/branches
+#	git for-each-ref --format='%(refname)' refs/heads/tags | \
+#		 cut -d / -f 4 | \
+#		 while read ref;
+#		 do
+#				git tag "$ref" "refs/heads/tags/$ref"
+#				git branch -D "tags/$ref"
+#		 done
+	git remote add origin "${GIT_REPO}"
+	git config branch.master.remote origin
+	git config branch.master.merge refs/heads/master
+	git push --tags origin master
+	git push --all
+
+	rm -rf "${GIT_BARE}"
+fi