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if(!dojo._hasResource["dojox.io.xhrMultiPart"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
dojo._hasResource["dojox.io.xhrMultiPart"] = true;
dojo.provide("dojox.io.xhrMultiPart");

dojo.require("dojo._base.xhr");
dojo.require("dojox.uuid.generateRandomUuid");

(function(){
        function _createPart(args, boundary){
                if(!args["name"] && !args["content"]){
                        throw new Error("Each part of a multi-part request requires 'name' and 'content'.");
                }

                var tmp = [];
                tmp.push("--" + boundary,
                                 "Content-Disposition: form-data; name=\"" + args.name + "\"" +
                                 (args["filename"] ? "; filename=\"" + args.filename + "\"" : ""));

                if(args["contentType"]){
                        var ct = "Content-Type: " + args.contentType;
                        if(args["charset"]){
                                ct += "; Charset=" + args.charset;
                        }
                        tmp.push(ct);
                }

                if(args["contentTransferEncoding"]){
                        tmp.push("Content-Transfer-Encoding: " + args.contentTransferEncoding);
                }

                tmp.push("", args.content);

                return tmp;
        }

        function _needIframe(node){
                return (!!(dojo.query("input[type=file]", node).length));
        }

        function _partsFromNode(node, boundary){
                // TODO: write this function!
                var tmp = [];
                return tmp;
        }

        dojox.io.xhrMultiPart = function(args){
                if(!args["file"] && !args["formNode"]){
                        throw new Error("file or formNode must be provided to dojox.io.xhrMultiPart's arguments");
                }

                // unique guid as a boundary value for multipart posts
                var boundary = dojox.uuid.generateRandomUuid();

                var tmp = [];
                var out = "";

                if(args["file"]){
                        var d = (dojo.isArray(args.file) ? args.file : [args.file]);

                        for(var i=0; i < d.length; i++){
                                tmp = tmp.concat(_createPart(d[i], boundary));
                        }
                }

                if(args["formNode"]){
                        tmp = tmp.concat(_partsFromNode(args["formNode"], boundary));
                }

                if(tmp.length){
                        tmp.push("--"+boundary+"--", "");
                        out = tmp.join("\r\n");
                }

                return dojo.rawXhrPost(dojo.mixin(args, {
                        contentType: "multipart/form-data; boundary=" + boundary,
                        postData: out
                }));
        }
})();

}