‘ This script …

' This script reads jpg picture named SuperPicture.jpg, converts it to base64
' code using encoding abilities of MSXml2.DOMDocument object and saves
' the resulting data to encoded.txt file

Option Explicit

Const fsDoOverwrite     = true  ' Overwrite file with base64 code
Const fsAsASCII         = false ' Create base64 code file as ASCII file
Const adTypeBinary      = 1     ' Binary file is encoded

' Variables for writing base64 code to file
Dim objFSO
Dim objFileOut

' Variables for encoding
Dim objXML
Dim objDocElem

' Variable for reading binary picture
Dim objStream

' Open data stream from picture
Set objStream = CreateObject("ADODB.Stream")
objStream.Type = adTypeBinary
objStream.Open()
objStream.LoadFromFile("SuperPicture.jpg")

' Create XML Document object and root node
' that will contain the data
Set objXML = CreateObject("MSXml2.DOMDocument")
Set objDocElem = objXML.createElement("Base64Data")
objDocElem.dataType = "bin.base64"

' Set binary value
objDocElem.nodeTypedValue = objStream.Read()

' Open data stream to base64 code file
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFileOut = objFSO.CreateTextFile("encoded.txt", fsDoOverwrite, fsAsASCII)

' Get base64 value and write to file
objFileOut.Write objDocElem.text
objFileOut.Close()

' Clean all
Set objFSO = Nothing
Set objFileOut = Nothing
Set objXML = Nothing
Set objDocElem = Nothing
Set objStream = Nothing
' This script reads base64 encoded picture from file named encoded.txt,
' converts it in to back to binary reprisentation using encoding abilities
' of MSXml2.DOMDocument object and saves data to SuperPicture.jpg file

Option Explicit

Const foForReading          = 1 ' Open base 64 code file for reading
Const foAsASCII             = 0 ' Open base 64 code file as ASCII file
Const adSaveCreateOverWrite = 2 ' Mode for ADODB.Stream
Const adTypeBinary          = 1 ' Binary file is encoded

' Variables for reading base64 code from file
Dim objFSO
Dim objFileIn
Dim objStreamIn

' Variables for decoding
Dim objXML
Dim objDocElem

' Variable for write binary picture
Dim objStream

' Open data stream from base64 code filr
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFileIn   = objFSO.GetFile("encoded.txt")
Set objStreamIn = objFileIn.OpenAsTextStream(foForReading, foAsASCII)

' Create XML Document object and root node
' that will contain the data
Set objXML = CreateObject("MSXml2.DOMDocument")
Set objDocElem = objXML.createElement("Base64Data")
objDocElem.DataType = "bin.base64"

' Set text value
objDocElem.text = objStreamIn.ReadAll()

' Open data stream to picture file
Set objStream = CreateObject("ADODB.Stream")
objStream.Type = adTypeBinary
objStream.Open()

' Get binary value and write to file
objStream.Write objDocElem.NodeTypedValue
objStream.SaveToFile "SuperPicture.jpg", adSaveCreateOverWrite

' Clean all
Set objFSO = Nothing
Set objFileIn = Nothing
Set objStreamIn = Nothing
Set objXML = Nothing
Set objDocElem = Nothing
Set objStream = Nothing

 

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