Swift在字符串中的2个字符串之间获取字符串 [英] Swift Get string between 2 strings in a string

问题描述

我从html解析中得到一个字符串;

I am getting a string from html parse that is;

string = "javascript:getInfo(1,'Info/99/something', 'City Hall',1, 99);"

我的代码类似于

var startIndex = text.rangeOfString("'")
var endIndex = text.rangeOfString("',")
var range2 = startIndex2...endIndex
substr= string.substringWithRange(range)

我不确定我的第二个分裂字符串是否应该是 '或'，

i am not sure if my second splitting string should be "'" or "',"

我希望我的结果为

substr = "Info/99/something"

推荐答案

我'使用正则表达式从这样的复杂输入中提取子串。

I'd use a regular expression to extract substrings from complex input like this.

Swift 3.1：

Swift 3.1:

let test = "javascript:getInfo(1,'Info/99/something', 'City Hall',1, 99);"

if let match = test.range(of: "(?<=')[^']+", options: .regularExpression) {
    print(test.substring(with: match))
}

// Prints: Info/99/something

Swift 2.0：

Swift 2.0:

let test = "javascript:getInfo(1,'Info/99/something', 'City Hall',1, 99);"

if let match = test.rangeOfString("(?<=')[^']+", options: .RegularExpressionSearch) {
    print(test.substringWithRange(match))
}

// Prints: Info/99/something

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