(JavaScript) Extract Files from Binary SOAP MTOM MIME

This example demonstrates how to extract files from a binary SOAP MTOM MIME document.

Note: This example requires Chilkat v11.0.0 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

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

var mime = new CkMime();

// In this example, we have a MIME file containing 8bit (non-encoded) binary data,
// and it is what I call "headless".  MIME is headless when it omits
// the top-level header.  The file we have here begins with the first
// boundary string.

// The structure the MIME to be loaded is:

// multipart/mixed (inferred because it is headless)
//     application/xop+xml
//     image/jpeg
//     image/gif
//     image/gif
// 

success = mime.LoadMimeFile("qa_data/mime/headless_binary_soap_mtom_mime.mim");
if (success == false) {
    console.log(mime.LastErrorText);
    return;
}

// The MIME file loaded in this example contains this:

// --uuid:e74486f4-52b0-44b6-b829-156810fae20d
// Content-Type: application/xop+xml; charset=UTF-8; type="application/soap+xml"
// Content-Transfer-Encoding: binary
// Content-ID: <root.message@cxf.apache.org>
// 
// <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope"><soap:Body> ... </soap:Body></soap:Envelope>
// --uuid:e74486f4-52b0-44b6-b829-156810fae20d
// Content-Type: image/jpeg
// Content-Transfer-Encoding: binary
// Content-ID: <beee83b7-166c-494c-890a-def990e9887b-1496@cxf.apache.org>
// Content-Disposition: attachment;name="-2049913191"
// 
// BINARY DATA HERE...
// 
// --uuid:e74486f4-52b0-44b6-b829-156810fae20d
// Content-Type: image/gif
// Content-Transfer-Encoding: binary
// Content-ID: <beee83b7-166c-494c-890a-def990e9887b-1497@cxf.apache.org>
// Content-Disposition: attachment;name="-2049913188"
// 
// BINARY DATA HERE...
// 
// --uuid:e74486f4-52b0-44b6-b829-156810fae20d
// Content-Type: image/gif
// Content-Transfer-Encoding: binary
// Content-ID: <beee83b7-166c-494c-890a-def990e9887b-1498@cxf.apache.org>
// Content-Disposition: attachment;name="-2049913185"
// 
// BINARY DATA HERE...
// 
// --uuid:e74486f4-52b0-44b6-b829-156810fae20d--

// Get the number of MIME sub-parts.
var numParts = mime.NumParts;

// The 1st part at index 0 is the application/xop+xml.  We're just going to extract the JPG and GIF image files..
var sbFilename = new CkStringBuilder();
var name;
var i = 1;
var mp = new CkMime();
while (i < numParts) {

    mime.PartAt(i,mp);

    // By looking at the MIME above, the "name" attribute of the Content-Disposition header field seems
    // to be the only possible name we can use for each image..
    sbFilename.Append("qa_output/");
    name = mp.GetHeaderFieldAttribute("Content-Disposition","name");
    sbFilename.Append(name);
    sbFilename.Append(".");
    sbFilename.Append(mp.ContentType);
    var numReplaced = sbFilename.Replace("image/","");
    mp.SaveBody(sbFilename.GetAsString());
    console.log("output file: " + sbFilename.GetAsString());
    sbFilename.Clear();
    i = i+1;
}

console.log("Success.");