Base64DecodeFromVariantStr - cCharTranslate

Decodes a base 64 encoded Variant String and places it in a newly created memory buffer

Type: Function
Return Data Type: Pointer

Parameters

Parameter	Type	Description
vBase64Str	Variant	Variant String as Base64
ByRef iBinaryLen	Integer	Returns the length of the binary buffer

Syntax

Function Base64DecodeFromVariantStr Variant vBase64Str ByRef Integer iBinaryLen Returns Pointer

Call Example

Get Base64DecodeFromVariantStr vBase64Str iBinaryLen to PointerVariable

Description

Base64DecodeFromVariantStr decodes a base 64 encoded Variant String and places it in a newly created memory buffer.

You are responsible for eventually disposing of the newly created memory buffer.

This is often paired with Base64EncodeToVariantStr.

See discussion in the cCharTranslate class overview about the advantages and disadvantage of using the Variant String type.

Use Windows.pkg
Use cCharTranslate.pkg

Object oCharTranslate is a cCharTranslate
End_Object

Procedure TestBase64EncodeVariantStr
    Pointer aBinary aBinary2
    Integer iVoid iLen iLen2
    Variant vVar
    String sData sData2

    // aBinary could be any binary data of length iLen. 
    Move "Pretend this is actually binary data" to sData
    Move (AddressOf(sData)) to aBinary
    Move (SizeOfString(sData)) to iLen

    // base64Encode to variant
    Get Base64EncodeToVariantStr of oCharTranslate aBinary iLen to vVar

    // Base64 decode from variant
    Get Base64DecodeFromVariantStr of oCharTranslate vVar (&iLen2) to aBinary2
    If (iLen<>iLen2 or MemCompare(aBinary,aBinary2,iLen2)) Begin
        Send Info_Box "Test Failed"
    End

    Move (Free(aBinary2)) to iVoid
End_Procedure

Send TestBase64EncodeVariantStr

Return Value

The buffer address of the decoded string