Introduction

MurmurHash framework in Swift.
A framework includes MurmurHash3's x86_32/x86_128/x64_128 functions.

Requirements

• Platforms
  • iOS 10.0+
  • macOS 10.12+
  • tvOS 12.0+
  • Linux
• Swift 4.2, 5.0

Installation

CocoaPods

use_frameworks!

target 'target' do
pod 'MurmurHash-Swift'
end

Carthage

github "daisuke-t-jp/MurmurHash-Swift"

Usage

Import framework

import MurmurHash_Swift

Generate digest(One-shot)

x86_32

let digest = MurmurHash3.x86_32.digest("Hello World! Hello World!")
// digest -> 0x0be480fc

// Using seed.
let digest = MurmurHash3.x86_32.digest("Hello World! Hello World!", seed: 0x7fffffff)
// digest -> 0x47fcc800

x86_128

let digest = MurmurHash3.x86_128.digestHex("Hello World! Hello World!")
// digest -> "86163d2b245b8ee23c4d056024166d77"

// Using seed.
let digest = MurmurHash3.x86_128.digestHex("Hello World! Hello World!", seed: 0x7fffffff)
// digest -> "d1ab28e6f4fc514c5e0df753b015261f"

x64_128

let digest = MurmurHash3.x64_128.digestHex("Hello World! Hello World!")
// digest -> "e881a28e49269b1e8d0d724eecb72e66"

// Using seed.
let digest = MurmurHash3.x64_128.digestHex("Hello World! Hello World!", seed: 0x7fffffff)
// digest -> "6028586a8c3df476fbd535aec6551aab"

Generate digest(Streaming)

x86_32

let mmh = MurmurHash3.x86_32() // if using seed, e.g. "MurmurHash3.x86_32(0x7fffffff)"

let bundle = Bundle(for: type(of: self))
let path = bundle.path(forResource: "alice29", ofType: "txt")!
let data = NSData(contentsOfFile: path)! as Data

let bufSize = 1024
var index = 0

repeat {
    var lastIndex = index + bufSize
    if lastIndex > data.count {
        lastIndex = index + data.count - index
    }

    let data2 = data[index..<lastIndex]
    mmh.update(data2)

    index += data2.count
    if index >= data.count {
        break
    }
} while(true)

let digest = mmh.digest()
// digest -> 0xcae14481

x86_128

let mmh = MurmurHash3.x86_128() // if using seed, e.g. "MurmurHash3.x86_128(0x7fffffff)"

let bundle = Bundle(for: type(of: self))
let path = bundle.path(forResource: "alice29", ofType: "txt")!
let data = NSData(contentsOfFile: path)! as Data

let bufSize = 1024
var index = 0

repeat {
    var lastIndex = index + bufSize
    if lastIndex > data.count {
        lastIndex = index + data.count - index
    }

    let data2 = data[index..<lastIndex]
    mmh.update(data2)

    index += data2.count
    if index >= data.count {
        break
    }
} while(true)

let digest = mmh.digestHex()
// digest -> "f3d9739244076beaaaa983c7cc4c7251"

x64_128

let mmh = MurmurHash3.x64_128() // if using seed, e.g. "MurmurHash3.x64_128(0x7fffffff)"

let bundle = Bundle(for: type(of: self))
let path = bundle.path(forResource: "alice29", ofType: "txt")!
let data = NSData(contentsOfFile: path)! as Data

let bufSize = 1024
var index = 0

repeat {
    var lastIndex = index + bufSize
    if lastIndex > data.count {
        lastIndex = index + data.count - index
    }

    let data2 = data[index..<lastIndex]
    mmh.update(data2)

    index += data2.count
    if index >= data.count {
        break
    }
} while(true)

let digest = mmh.digestHex()
// digest -> "ef12617f3e2a5f9a44b3598f2e09cd50"

Demo

There are demos.

• iOS
• macOS
• tvOS