Take all the names and URLs from HTML

TakeLinks.md

How to Run

$ scala TakeLinks.scala 

Result

old version
======================
Test URL1
https://some.url.com?blah=MORE-BLAH
                 
Test URL2
https://another.url.com?dr=who
                 
Test URL3
https://third.url.com?name=dontknow
                 
new version
======================
Test URL1
https://some.url.com?blah=MORE-BLAH

Test URL2
https://another.url.com?dr=who

Test URL3
https://third.url.com?name=dontknow

TakeLinks.scala

val text = """
<div class="content">
                  <h4>Some Header</h4>

<p><a href="https://some.url.com?blah=MORE-BLAH" class="inline">Test URL1</a><span class="highlighted">(something.else)</span><br>
<a href="https://another.url.com?dr=who" class="inline">Test URL2</a><span class="highlighted">(something.else)</span><br>
<a href="https://third.url.com?name=dontknow" class="inline">Test URL3</a><span class="highlighted">(something.else)</span></p>

          </div>
""".stripMargin

val aTagPattern = """<a\s+(?:[^>]*?\s+)?href="([^"]*)"\s*(?:[^>]*?\s*)?>([^"]*)<\/a>""".r.unanchored

println("old version\n======================")
// Old version
text.split("[\\n]+")
    .toStream
    .map(_.trim)
    .map { line =>
      line match {
        case aTagPattern(url, name) => Option((url, name))
        case any => None
      }
    }
    .foreach {
      case Some((url, name)) =>
        println(s"""$name
                   |$url
                 """.stripMargin)
      case _ =>
    }

println("new version\n======================")
// New version
(for {
  line <- text.split("[\\n]+")
  aTagPattern(url, name) <- aTagPattern findAllMatchIn line
} yield s"$name\n$url\n") foreach println

루비는 JSON을 어떻게 다루나요? 혹시 루비 자체 데이터 타입으로 제공한다거나? 😲?

@kevin-lee 이제야 확인을 했습니다. 보니까 저는 for comprehension이 훨씬 가독성이 좋네요 👍
루비에서 json은 그냥 hash로 1:1로 양방향 변환이 되니까(다이나믹 타입) 아주아주 편리합니다.
루비에서 hash의 위상이 엄청나게 높다보니 ㅎㅎ