(Go) S3 Get Bucket Objects with CommonPrefixes

Demonstrates how to get a list of bucket objects using the prefix and delimiter query params to get an XML result with CommonPrefixes.

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

    http := chilkat.NewHttp()

    // Insert your access key here:
    http.SetAwsAccessKey("AWS_ACCESS_KEY")

    // Insert your secret key here:
    http.SetAwsSecretKey("AWS_SECRET_KEY")

    // In this example, my bucket is "chilkat100".
    // It contains a number of folders, one of which is named "images".
    // I want to get a list of all sub-folders under the "images" folder
    strXml := http.S3_ListBucketObjects("chilkat100?prefix=images/&delimiter=/")
    if http.LastMethodSuccess() != true {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        return
    }

    fmt.Println("Response status code = ", http.LastStatus())

    xml := chilkat.NewXml()
    success := xml.LoadXml(*strXml)
    if success != true {
        fmt.Println(xml.LastErrorText())
        http.DisposeHttp()
        xml.DisposeXml()
        return
    }

    // If the response status code was not 200, then the XML response is not a 
    // listing of objects, but instead contains error information.
    if http.LastStatus() != 200 {
        fmt.Println(*xml.GetXml())
        fmt.Println("Failed.")
        http.DisposeHttp()
        xml.DisposeXml()
        return
    }

    // A sample response is shown below.
    fmt.Println(*xml.GetXml())
    fmt.Println("----")

    // Here is the list of sub-folders (i.e. CommonPrefixes)

    // <?xml version="1.0" encoding="UTF-8"?>
    // <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    //     <Name>chilkat100</Name>
    //     <Prefix>images/</Prefix>
    //     <Marker/>
    //     <MaxKeys>1000</MaxKeys>
    //     <Delimiter>/</Delimiter>
    //     <IsTruncated>false</IsTruncated>
    //     <CommonPrefixes>
    //         <Prefix>images/africa/</Prefix>
    //     </CommonPrefixes>
    //     <CommonPrefixes>
    //         <Prefix>images/sea_creatures/</Prefix>
    //     </CommonPrefixes>
    // </ListBucketResult>

    var Prefix *string = new(string)

    // The XML can be parsed like this:
    i := 0
    count_i := xml.NumChildrenHavingTag("CommonPrefixes")
    for i < count_i {
        xml.SetI(i)
        Prefix = *xml.GetChildContent("CommonPrefixes[i]|Prefix")
        fmt.Println("Prefix = ", *Prefix)
        i = i + 1
    }


    http.DisposeHttp()
    xml.DisposeXml()