Cocos2d-x CCLOG封装

在cocos2d-x-3.16版本中使用console.log打印时，有时可能因为字符串太长打印不了，封装一个接口用于打印多种情况

HelpTool.log = function() {
    var objToString = function(obj, str) {
        str = str || "";
        if(typeof obj === "string" || typeof obj === "number" || typeof obj === "boolean") {
            str += "\n" + obj;
        } else if(typeof  obj === "object") {
            try {
                str += "\n" + JSON.stringify(obj, null, 4);
            } catch(e) {
                HelpTool.printError(e);
            }
        }

        return str;
    };

    var str = ">>>>";
    for(var key in arguments) {
        var arg = arguments[key];
        str += objToString(arg);
    }

    var max_line = 1400;

    var pos = str.indexOf("\n");
    for(var i = 0; i < max_line; i++) {
        pos = str.indexOf("\n", pos + 1);
        if(pos < 0) {
            break;
        }
    }

    if(pos > 0) {
        str = str.slice(0, pos);
    }

    str += "\n";
    console.log(str);
};