code: public static Tmpl parse(String tmpl,
                               final String startChar,
                               String leftBrace,
                               String rightBrace) {
          if (null == tmpl)
              return null;
          String regex = "((?<!["
                         + startChar
                         + "])["
                         + startChar
                         + "]["
                         + ("[".equals(leftBrace) ? "\\[" : leftBrace)
                         + "]([^"
                         + ("]".equals(rightBrace) ? "\\]" : rightBrace)
                         + "]+)["
                         + rightBrace
                         + "])|(["
                         + startChar
                         + "]["
                         + startChar
                         + "])";
          Pattern ptn = Pattern.compile(regex);
          return new Tmpl(tmpl, ptn, 2, 3, new TmplEscapeStr() {
              public String get(Matcher m) {
                  return startChar;
              }
          });
      }
docs: 解析模板对象, 并用上下文进行渲染。
  
  @param tmpl
  模板字符串
  @param startChar
  占位符起始标示符
  @param leftBrace
  左侧括号
  @param rightBrace
  右侧括号
  @return 模板对象