Created
June 19, 2018 18:31
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Swift IP string to UInt32 and backward
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| func stringIpToInt(_ input: String) -> UInt32 { | |
| var result: UInt32 = 0 | |
| var i = 0 | |
| for part in input.split(separator: ".") { | |
| result |= UInt32(part)! << ((3 - i) * 8) | |
| i += 1 | |
| } | |
| return result | |
| } | |
| func intToIpString(_ input: UInt32) -> String { | |
| let byte1 = UInt8(input & 0xff) | |
| let byte2 = UInt8((input >> 8) & 0xff) | |
| let byte3 = UInt8((input >> 16) & 0xff) | |
| let byte4 = UInt8((input >> 24) & 0xff) | |
| return "\(byte4).\(byte3).\(byte2).\(byte1)" | |
| } | |
| dump(stringIpToInt("127.0.0.1")) | |
| dump(intToIpString(2130706433)) | |
| // - 2130706433 | |
| // - "127.0.0.1" |
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