Visual FoxPro
OSS List Bucket Objects (Alibaba Cloud)

Demonstrates how to list the objects in a bucket.
The Chilkat S3 functions in the HTTP class are compatible with Alibaba Cloud's OSS service.
Chilkat Visual FoxPro Downloads

Visual FoxPro
LOCAL lnSuccess
LOCAL loHttp
LOCAL lcBucketName
LOCAL lcStrXml
LOCAL loXml
LOCAL lcKey
LOCAL lcLastModified
LOCAL lcETag
LOCAL lcSizeDecimalStr
LOCAL lcStorageClass
LOCAL lcID
LOCAL lcDisplayName
LOCAL lcListBucketResult_xmlns
LOCAL lcName
LOCAL lnMaxKeys
LOCAL lcIsTruncated
LOCAL i
LOCAL lnCount_i

lnSuccess = 0

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

loHttp = CreateObject('Chilkat.Http')

* Insert your AccessKey ID here:
loHttp.AwsAccessKey = "access-key"

* Insert your AccessKey Secret here:
loHttp.AwsSecretKey = "secret-key"

* To list objects in a bucket located in a different region, use the endpoint for that region, such as "oss-cn-hangzhou.aliyuncs.com 	"
* See Alibaba Object Storage Service Regions and Endpoints
loHttp.AwsEndpoint = "oss-us-east-1.aliyuncs.com"

lcBucketName = "chilkat"

lcStrXml = loHttp.S3_ListBucketObjects(lcBucketName)
IF (loHttp.LastMethodSuccess <> 1) THEN
    ? loHttp.LastErrorText
    RELEASE loHttp
    CANCEL
ENDIF

? "Response status code = " + STR(loHttp.LastStatus)

loXml = CreateObject('Chilkat.Xml')
lnSuccess = loXml.LoadXml(lcStrXml)
IF (lnSuccess <> 1) THEN
    ? loXml.LastErrorText
    RELEASE loHttp
    RELEASE loXml
    CANCEL
ENDIF

* If the response status code was not 200, then the XML response is not a 
* listing of objects, but instead contains error information.
IF (loHttp.LastStatus <> 200) THEN
    ? loXml.GetXml()
    ? "Failed."
    RELEASE loHttp
    RELEASE loXml
    CANCEL
ENDIF

* A sample response is shown below.
? loXml.GetXml()
? "----"

* Use this online tool to generate parsing code from sample XML: 
* Generate Parsing Code from XML

* <?xml version="1.0" encoding="UTF-8"?>
* <ListBucketResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
*     <Name>chilkat</Name>
*     <Prefix/>
*     <Marker/>
*     <MaxKeys>1000</MaxKeys>
*     <IsTruncated>false</IsTruncated>
*     <Contents>
*         <Key>orchard.json</Key>
*         <LastModified>2021-10-29T16:58:12.000Z</LastModified>
*         <ETag>"303FB46CF341094FEF6274B7789CD6AA"</ETag>
*         <Size>22</Size>
*         <StorageClass>STANDARD</StorageClass>
*         <Owner>
*             <ID>5035535379748121</ID>
*             <DisplayName>5035535379748121</DisplayName>
*         </Owner>
*     </Contents>
*     <Contents>
*         <Key>seahorse.jpg</Key>
*         <LastModified>2021-10-29T16:52:01.000Z</LastModified>
*         <ETag>"A8551F0A5437F43A796FCA7623EE9232"</ETag>
*         <Size>24388</Size>
*         <StorageClass>STANDARD</StorageClass>
*         <Owner>
*             <ID>5035535379748121</ID>
*             <DisplayName>5035535379748121</DisplayName>
*         </Owner>
* 
*     </Contents>
* </ListBucketResult>

lcListBucketResult_xmlns = loXml.GetAttrValue("xmlns")
lcName = loXml.GetChildContent("Name")
lnMaxKeys = loXml.GetChildIntValue("MaxKeys")
lcIsTruncated = loXml.GetChildContent("IsTruncated")
i = 0
lnCount_i = loXml.NumChildrenHavingTag("Contents")
DO WHILE i < lnCount_i
    loXml.I = i
    lcKey = loXml.GetChildContent("Contents[i]|Key")
    lcLastModified = loXml.GetChildContent("Contents[i]|LastModified")
    lcETag = loXml.GetChildContent("Contents[i]|ETag")
    lcSizeDecimalStr = loXml.GetChildContent("Contents[i]|Size")
    lcStorageClass = loXml.GetChildContent("Contents[i]|StorageClass")
    lcID = loXml.GetChildContent("Contents[i]|Owner|ID")
    lcDisplayName = loXml.GetChildContent("Contents[i]|Owner|DisplayName")
    i = i + 1
ENDDO

RELEASE loHttp
RELEASE loXml