Swift

Extract PDF from JSON

See more JSON Examples

Demonstrates how to extract a PDF file contained within JSON. The file is represented as a base64 string within the JSON. Note: This example can extract any type of file, not just a PDF file. Swift

func chilkatTest() {
    var success: Bool = false

    let json = CkoJsonObject()!

    // Load the JSON.
    success = json.loadFile(path: "qa_data/json/JSR5U.json")
    if success != true {
        print("\(json.lastErrorText!)")
        return
    }

    // The JSON we loaded contains this:

    // 	{
    // 	...
    // 	...
    // 	  "data": {
    // 	    "content": "JVBERi0xLjQ..."
    // 	  }
    // 	...
    // 	...
    // 	}

    let sb = CkoStringBuilder()!
    json.string(ofSb: "data.content", sb: sb)

    let bd = CkoBinData()!
    bd.appendEncodedSb(sb: sb, encoding: "base64")

    success = bd.writeFile(path: "qa_output/a0015.pdf")

}