Swift

Compress Bytes to Base64 (or any other encoding)

See more Compression Examples

Compresses bytes to base64 or any other encoding. Also decompress to return the original. Swift

func chilkatTest() {
    var success: Bool = false

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

    // First create some binary data to compress.
    let binData = CkoBinData()!

    var i: Int
    for i = 1; i <= 16; i++ {
        binData.appendEncoded(encData: "000102030405060708090A0B0C0D0E0F", encoding: "hex")
    }

    let compress = CkoCompression()!
    compress.algorithm = "deflate"
    compress.encodingMode = "base64"

    var uncompressedBytes: NSData
    uncompressedBytes = binData.getBinary()

    // Compress and return the compressed bytes in base64 format.
    var compressedBase64: String? = compress.compressBytesENC(bData: uncompressedBytes)
    print("compressed and base64 encoded: \(compressedBase64!)")

    // Compress and return in hex format:
    compress.encodingMode = "hex"
    var compressedHex: String? = compress.compressBytesENC(bData: uncompressedBytes)
    print("compressed and hex encoded: \(compressedHex!)")

    // Now decompress..
    let binData2 = CkoBinData()!

    // Decompress the base64..
    compress.encodingMode = "base64"
    uncompressedBytes = compress.decompressBytesENC(str: compressedBase64)
    binData2.appendBinary(data: uncompressedBytes)
    // Show the uncompressed bytes in hex format:
    print("\(binData2.getEncoded(encoding: "hex")!)")
    print("--")

    // Decompress the hex..
    compress.encodingMode = "hex"
    uncompressedBytes = compress.decompressBytesENC(str: compressedHex)
    binData2.clear()
    binData2.appendBinary(data: uncompressedBytes)
    // Show the uncompressed bytes in hex format:
    print("\(binData2.getEncoded(encoding: "hex")!)")
    print("--")

}