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March 29, 2023 13:53
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A simple Semantic Version struct for Swift. Can be used to parse short app version and compare them easily.
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struct Version { | |
let major: UInt | |
let minor: UInt | |
let patch: UInt? | |
init(major: UInt, minor: UInt = 0, patch: UInt? = nil) { | |
self.major = major | |
self.minor = minor | |
self.patch = patch | |
} | |
init?(versionString: String) { | |
let splitVersion = versionString.split(separator: ".") | |
switch splitVersion.count { | |
case 0: | |
return nil | |
case 1: | |
guard let major = UInt(splitVersion[0]) else { | |
return nil | |
} | |
self.init(major: major) | |
case 2: | |
guard | |
let major = UInt(splitVersion[0]), | |
let minor = UInt(splitVersion[1]) | |
else { | |
return nil | |
} | |
self.init(major: major, minor: minor) | |
default: | |
guard | |
let major = UInt(splitVersion[0]), | |
let minor = UInt(splitVersion[1]), | |
let patch = UInt(splitVersion[2]) | |
else { | |
return nil | |
} | |
self.init(major: major, minor: minor, patch: patch) | |
} | |
} | |
} | |
extension Version: CustomStringConvertible { | |
var description: String { | |
var description = "\(self.major).\(self.minor)" | |
if let patch { | |
description += ".\(patch)" | |
} | |
return description | |
} | |
} | |
extension Version: Equatable { | |
static func ==(lhs: Version, rhs: Version) -> Bool { | |
lhs.major == rhs.major && lhs.minor == rhs.minor && lhs.patch == rhs.patch | |
} | |
} | |
extension Version: Hashable { | |
func hash(into hasher: inout Hasher) { | |
major.hash(into: &hasher) | |
minor.hash(into: &hasher) | |
patch.hash(into: &hasher) | |
} | |
} | |
extension Version: Comparable { | |
static func <(lhs: Version, rhs: Version) -> Bool { | |
( | |
lhs.major, | |
lhs.minor, | |
lhs.patch ?? 0 | |
) < ( | |
rhs.major, | |
rhs.minor, | |
rhs.patch ?? 0 | |
) | |
} | |
} |
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