(Go) Download a Zip from a URL and OpenBd. (No .zip file is created)

Demonstrates how to download a .zip from a URL, opens the Zip, and gets the contents of a file. No file is ever written.

Chilkat Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    http := chilkat.NewHttp()

    bd := chilkat.NewBinData()

    // This URL is valid and can be tested...
    success := http.QuickGetBd("http://chilkatdownload.com/example_data/hamlet.zip",bd)
    if http.LastMethodSuccess() != true {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        bd.DisposeBinData()
        return
    }

    zip := chilkat.NewZip()

    // Open the zip from the bytes contained in bd.
    success = zip.OpenBd(bd)
    if success == false {
        fmt.Println(zip.LastErrorText())
        http.DisposeHttp()
        bd.DisposeBinData()
        zip.DisposeZip()
        return
    }

    // Get the entry for the file we want..
    entry := zip.GetEntryByName("hamlet.xml")
    if zip.LastMethodSuccess() != true {
        fmt.Println(zip.LastErrorText())
        http.DisposeHttp()
        bd.DisposeBinData()
        zip.DisposeZip()
        return
    }

    // Convert all line endings to CRLF (if needed)
    lineEndingBehavior := 2
    xmlStr := entry.UnzipToString(lineEndingBehavior,"utf-8")
    if entry.LastMethodSuccess() != true {
        fmt.Println(entry.LastErrorText())
        entry.DisposeZipEntry()
        http.DisposeHttp()
        bd.DisposeBinData()
        zip.DisposeZip()
        return
    }

    // The XML in this case is about 274K, so let's just examine the last 20 lines...
    sb := chilkat.NewStringBuilder()
    sb.Append(*xmlStr)

    fmt.Println(*sb.LastNLines(20,true))

    entry.DisposeZipEntry()

    http.DisposeHttp()
    bd.DisposeBinData()
    zip.DisposeZip()
    sb.DisposeStringBuilder()