Add checkout module

1 files changed, 61 insertions, 0 deletions

diff --git a/checkout.sh b/checkout.sh
new file mode 100644
index 0000000..5ea4b70
--- /dev/null
+++ b/checkout.sh
@@ -0,0 +1,61 @@
+##
+# systrunk checkout [[<remote>] <path>] <version>
+#
+# Reset a worktree to the state at <version>.  If <path> is given,
+# checkout also initializes a new worktree at the CWD.  If <remote>
+# is given, the path is assumed to be located on a remote machine
+# and is contacted over SSH.  While resetting to the state at
+# <version>, all local uncommitted changes are lost.
+#
+# After checkout, BASE and TRAC will be set to <version>.
+##
+function systr_checkout
+{
+    # check arguments #
+    if [ $# -lt 2 ]; then
+        echo "Missing required parameters"
+        exit
+    fi
+
+    # init worktree #
+    if [ $# -gt 2 ]; then
+        init_wktree $@
+    fi
+
+    # perform checkout #
+    read remote <.systr/remote
+    read path   <.systr/path
+    version=$2
+
+    if [[ "$version" == "NULL" ]]; then
+        echo "Checking out NULL :: Checkout not performed"
+        exit
+    fi
+
+    commit=$(get_commit "$version")
+    symref=$(get_symref "$version")
+
+    echo "$commit" >.systr/BASE
+    echo "$symref" >.systr/TRAC
+
+    if [[ "$commit" == "NULL" ]]; then
+        echo "Nothing to checkout"
+        exit
+    fi
+
+    echo "Checking out files..."
+
+    # local repository #
+    if [[ "$remote" == "" ]]; then
+        rsync -az --info=progress2 --info=stats2 \
+            --delete --exclude='*.systr' \
+            "$path/$commit/" .
+
+    # remote repository #
+    else
+        rsync -az -e ssh --info=progress2 --info=stats2 \
+            --delete --exclude='*.systr' \
+            "$remote:$path/$commit/" .
+
+    fi
+}