java - Java/clojure：多字符分隔符，并保留分隔符

Question

我正在开发一个 clojure 项目，它可以与任何 java 类互操作，所以我的问题的答案可能是 java 或 clojure。

基本上我需要能够根据给定的分隔符（将超过一个字符）将字符串拆分为组件，但同时保留分隔符。

例如：

splitting "test:test:test" on ":"  => [ "test" ":" "test" ":" "test" ]
splitting "::test::test::" on "::" => [ "::" "test" "::" "test" "::" ]

我来的壁橱使用 clojure's clojure.string/split，但它实际上并没有返回分隔符。第二个最接近的是使用 StringTokenizer，它确实返回分隔符但不接受多字符分隔符。

除了将字符串分解成一系列字符并对其进行奇怪的减少之外，有谁知道任何解决方案？

Answer 1

这是一个版本，它构建了一个正则表达式来匹配分隔符前后的间隙，而不是分隔符字符串本身（假设 regex 中没有特殊字符d）：

=> (defn split-with-delim [s d]
     (clojure.string/split s (re-pattern (str "(?=" d ")|(?<=" d ")"))))
#'user/split-with-delim
=> (split-with-delim "test:test:test" ":")
["test" ":" "test" ":" "test"]
=> (split-with-delim "::test::test::" "::")
["" "::" "test" "::" "test" "::"]

Answer 2

(defn split-it [s d]
  (interpose d (str/split s (re-pattern d))))

(split-it "test:test:test" ":")
=> ("test" ":" "test" ":" "test")

(split-it "::test::test::" "::")
=> ("" "::" "test" "::" "test")