(Swift) Compress String Feed to Base64

This example receives incoming text data in chunks, compresses as a stream, and accumulates the compressed data in base64.

Note: This example requires Chilkat v11.0.0 or greater.

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

func chilkatTest() {
    var success: Bool = false

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

    let sbCompressedBase64 = CkoStringBuilder()!

    let compress = CkoCompression()!
    compress.algorithm = "deflate"
    compress.charset = "utf-8"
    compress.encodingMode = "base64"

    compress.firstChunk = true
    compress.lastChunk = false

    let bdCompressed = CkoBinData()!
    let sbUncompressedChunk = CkoStringBuilder()!

    var i: Int
    for i = 0; i <= 24; i++ {
        if i == 24 {
            compress.lastChunk = true
        }

        sbUncompressedChunk.clear()
        sbUncompressedChunk.appendInt(i)
        sbUncompressedChunk.append(": This is a line of data to be compressed...\r\n")

        compress.compressSb(sbUncompressedChunk, binData: bdCompressed)

        compress.firstChunk = false
    }

    print("The base64 encoded compressed text:")
    print("\(bdCompressed.getEncoded("base64")!)")

    // Decompress in one call:
    var originalText: String? = compress.decompressStringENC(bdCompressed.getEncoded("base64"))
    print("\(originalText!)")

}