Go Requires Chilkat v11.7.0+

Validate a QR Code Request

See more QR Code Examples

Demonstrates the validate operation, which examines a request without producing anything. The scope says how far to look: definition checks the options, capacity also checks that the data fits a QR symbol, and layout also checks the rendered size against the limits. The response has a validationStatus of valid or invalid, a list of checks, and findings[] describing what is wrong. A request that cannot be understood at all, such as one with a misspelled option, still makes the call fail in the usual way. Go

    success := false

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

    fmt := chilkat.NewFormats()
    jsonOut := chilkat.NewJsonObject()
    var i int
    var n int

    json := chilkat.NewJsonObject()
    json.UpdateString("target","symbol")
    json.UpdateString("validation.scope","capacity")
    json.UpdateString("payload.text","https://www.chilkatsoft.com/barcode_overview.asp")

    success = fmt.QrCode("validate",json,jsonOut)
    if success == false {
        fmt.Println(fmt.LastErrorText())
        fmt.DisposeFormats()
        jsonOut.DisposeJsonObject()
        json.DisposeJsonObject()
        return
    }

    fmt.Println("status: ", *jsonOut.StringOf("validationStatus"))
    n = jsonOut.SizeOfArray("checks")
    for i = 0; i <= n - 1; i++ {
        jsonOut.SetI(i)
        fmt.Println("  ", *jsonOut.StringOf("checks[i].name"), ": ", *jsonOut.StringOf("checks[i].status"))
    }

    //  The same text does not fit version 2 at error-correction level H.
    json.UpdateInt("encoding.qr.maxVersion",2)
    json.UpdateString("encoding.qr.errorCorrection","H")

    success = fmt.QrCode("validate",json,jsonOut)
    if success == false {
        fmt.Println(fmt.LastErrorText())
        fmt.DisposeFormats()
        jsonOut.DisposeJsonObject()
        json.DisposeJsonObject()
        return
    }

    fmt.Println("status: ", *jsonOut.StringOf("validationStatus"))
    n = jsonOut.SizeOfArray("checks")
    for i = 0; i <= n - 1; i++ {
        jsonOut.SetI(i)
        fmt.Println("  ", *jsonOut.StringOf("checks[i].name"), ": ", *jsonOut.StringOf("checks[i].status"))
    }

    n = jsonOut.SizeOfArray("findings")
    for i = 0; i <= n - 1; i++ {
        jsonOut.SetI(i)
        fmt.Println("finding: ", *jsonOut.StringOf("findings[i].code"), " at ", *jsonOut.StringOf("findings[i].path"))
        fmt.Println("  ", *jsonOut.StringOf("findings[i].message"))
    }

    //  Sample output:

    //  status: valid
    //    definition: passed
    //    capacity: passed
    //    layout: notApplicable
    //  status: invalid
    //    definition: passed
    //    capacity: failed
    //    layout: notApplicable
    //  finding: capacityExceeded at /payload
    //    the payload does not fit any admitted QR version at the selected error-correction level

    fmt.DisposeFormats()
    jsonOut.DisposeJsonObject()
    json.DisposeJsonObject()