Method writeTreeRecursive

src/main/java/club/qqtim/command/WriteTree.java:83–103

this is an easy dfs for writing objects and trees

(Map<String, Object> treeDict)

     * this is an easy dfs for writing objects and trees
     */
    private String writeTreeRecursive(Map<String, Object> treeDict) {
        List<ZitObject> zitObjects = new ArrayList<>();
        for (Map.Entry<String, Object> keyVal : treeDict.entrySet()) {
            String type, objectId;
            String name = keyVal.getKey();
            Object value = keyVal.getValue();
            if (value instanceof Map) {
                type = ConstantVal.TREE;
                // get tree id
                objectId = writeTreeRecursive((Map<String, Object>) value);
            } else {
                type = ConstantVal.BLOB;
                objectId = (String) value;
            }
            zitObjects.add(new ZitObject(type, objectId, name));
        }
        String fileContent = zitObjects.stream().sorted()
                .map(e -> String.format("%s %s %s\n", e.getType(), e.getObjectId(), e.getName()))
                .collect(Collectors.joining());
        return HashObject.hashObject(fileContent.getBytes(Charsets.UTF_8), ConstantVal.TREE);
    }


}