parsing a formdata object with javascript

Question

My company uses a propitiatory application server in which the server side programs are written in javascript (not node.js) . This is a very initial thing and support isn't that good

Now here is my problem :

I am having to process an uploaded csv on the server side .. I am using the super answer at How can I upload files asynchronously? (passing the formdata object with jquery) and i am able to access the sent file on the server side . But how do i parse it out ?

It looks like this

------WebKitFormBoundaryU5rJUDxGnj15hIGW
Content-Disposition: form-data; name="fileToUpload"; filename="test.csv"
Content-Type: application/vnd.ms-excel

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------WebKitFormBoundaryU5rJUDxGnj15hIGW--

I'm really confused how to handle this file with plain javascript on the server side.

Please help.

Answer 1

Ok so , i managed to do this myself. I tested it out of a couple of browsers and noticed that the header was 3 lines and the footer was 1 line.

I just wrote one simple parser that splits the file by the newline character and put its into an array line by line.

This helps me in processing till now .

function doProcess()
{

var i=0;
var str = '';
var arrayList = [];

for (i=0;i<fileContent.length;i++)
{
    if (fileContent[i] !== '\n')
    {
        str += fileContent[i];
    }
    else
    {
        str = str.replace("\r","");
        if (trim(str) !== "")
        {
            arrayList.push(str);
        }
        str = '';
    }
}

    // Remove header
    arrayList.splice(0,3);

    // Remove footer
    arrayList.splice(arrayList.length-1,1);

    // arrayList is an array of all the lines in the file
    console.log(arrayList); 
}