AutoIt

S3 Get Bucket Objects with CommonPrefixes

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

Local $bSuccess = False

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

$oHttp = ObjCreate("Chilkat.Http")

; Insert your access key here:
$oHttp.AwsAccessKey = "AWS_ACCESS_KEY"

; Insert your secret key here:
$oHttp.AwsSecretKey = "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
Local $strXml = $oHttp.S3_ListBucketObjects("chilkat100?prefix=images/&delimiter=/")
If ($oHttp.LastMethodSuccess <> True) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("Response status code = " & $oHttp.LastStatus & @CRLF)

$oXml = ObjCreate("Chilkat.Xml")
$bSuccess = $oXml.LoadXml($strXml)
If ($bSuccess <> True) Then
    ConsoleWrite($oXml.LastErrorText & @CRLF)
    Exit
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 ($oHttp.LastStatus <> 200) Then
    ConsoleWrite($oXml.GetXml() & @CRLF)
    ConsoleWrite("Failed." & @CRLF)
    Exit
EndIf

; A sample response is shown below.
ConsoleWrite($oXml.GetXml() & @CRLF)
ConsoleWrite("----" & @CRLF)

; 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>

Local $sPrefix

; The XML can be parsed like this:
Local $i = 0
Local $iCount_i = $oXml.NumChildrenHavingTag("CommonPrefixes")
While $i < $iCount_i
    $oXml.I = $i
    $sPrefix = $oXml.GetChildContent("CommonPrefixes[i]|Prefix")
    ConsoleWrite("Prefix = " & $sPrefix & @CRLF)
    $i = $i + 1
Wend