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PythonのようなスッキリしたSwift正規表現ライブラリー

Posted at

PySwiftyRegex

私が前に作った正規表現のライブラリは今週のSwiftSandbox Issueに当選しましたw

Pythonのreのようなスッキリした正規表現ライブラリーです。よろしければ、どうぞお使いくださ(CocoaPods, Carthage対応あり)

日本語のREADMEもあります https://github.com/cezheng/PySwiftyRegex/blob/master/README-ja.md

よく使われるメッソドの用例

RegexObjectをコンパイルする

let regex = re.compile("this(.+)that")

文字列の始めからマッチングする

if let m = regex.match("this one is different from that") {
	m.group()  //"this one is different from that"
	m.group(1) //" one is different from "
}

文字列の中にパターンを探す (first match)

if let m = regex.search("I want this one, not that one") {
	m.group()  //"this one, not that one"
	m.group(1) //" one, not "
}

マッチングできた全ての文字列を取得する

regex.findall("this or that, this and that") // ["this or that", "this and that"]

マッチングできた全てのMatchObjectを取得する

for m in regex.finditer("this or that, this and that") {
	m.group()  // 1st time: "this or that", second time: "this and that"
	m.group(1) // 1st time: " or ", second time: " and "
}

パターンで文字列を分割する

let regex = re.compile("[\\+\\-\\*/]")

// デフォルト、全て分割する
regex.split("1+2-3*4/5")    // ["1", "2", "3", "4", "5"]

// 最大分割回数 = 2
regex.split("1+2-3*4/5", 2) // ["1", "2", "3*4/5"]

パターンで文字列を置換する

let regex = re.compile("[Yy]ou")

// 全て置換する (この例は2回)
regex.sub("u", "You guys go grap your food")     // "u guys go grap ur food"
regex.subn("u", "You guys go grap your food")    // ("u guys go grap ur food", 2)

// 最大置換回数を1回にする (この例は1回)
regex.sub("u", "You guys go grap your food", 1)  // "u guys go grap your food"
regex.subn("u", "You guys go grap your food", 1) // ("u guys go grap your food", 1)

もっと詳しい情報はgithubのREADMEをご覧ください。

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