(Swift 2) Compress and Decompress a String

Demonstrates how to compress and decompress a string.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var success: Bool
    let sb = CkoStringBuilder()

    var i: Int
    for i = 1; i <= 20; i++ {
        sb.Append("This is the original uncompressed string.\r\n")
    }

    let compress = CkoCompression()
    compress.Algorithm = "deflate"
    // Indicate that the utf-8 byte representation of the string should be compressed.
    compress.Charset = "utf-8"

    var compressedBytes: NSData
    compressedBytes = compress.CompressString(sb.GetAsString())

    // If the compressed data is desired in string format, then get the base64 representation of the bytes.
    compress.EncodingMode = "base64"
    var compressedBase64: String? = compress.CompressStringENC(sb.GetAsString())
    print("Compressed Bytes as Base64: \(compressedBase64!)")

    // Now decompress...
    var decompressedString: String? = compress.DecompressString(compressedBytes)
    print("The original string after decompressing from binary compressed data:")
    print("\(decompressedString!)")

    // To decompress from Base64...
    compress.EncodingMode = "base64"
    decompressedString = compress.DecompressStringENC(compressedBase64)
    print("The original string after decompressing from Base64:")
    print("\(decompressedString!)")

}