node.js/requestHandlers.js at master · mark1979smith/node.js · GitHub

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var querystring = require("querystring"),
	fs = require("fs"),
	formidable = require("formidable")
	exec = require("child_process").exec;

function start(response, postData) {
    console.log("Request handler 'start' was called.");
    var body = '<html>'+
        '<head>'+
        '<meta http-equiv="Content-Type" content="text/html; '+
        'charset=UTF-8" />'+
        '</head>'+
        '<body>'+
        '<form action="/upload" enctype="multipart/form-data" method="post">'+
        '<input type="file" name="upload">'+
        '<input type="submit" value="Submit text" />'+
        '</form>'+
        '</body>'+
        '</html>';
    response.writeHead(200, {"Content-Type": "text/html"});
    response.write(body);
    response.end();
}

function upload(response, request) {
    console.log("Request handler 'upload' was called.");
    var form = new formidable.IncomingForm();
    console.log("about to parse");
    form.parse(request, function(error, fields, files) {
	    console.log("parsing done");

	     /* Possible error on Windows systems:
	     tried to rename to an already existing file */
	    fs.rename(files.upload.path, "test.png", function(error) {
		    if (error) {
		        fs.unlink("test.png");
		        fs.rename(files.upload.path, "test.png");
		    }
	    });
	    response.writeHead(200, {"Content-Type": "text/html"});
	    response.write("received image:<br/>");
	    response.write("<img src='/show' />");
	    response.end();
    });
}

function show(response) {
    console.log("Request handler 'show' was called.");
    response.writeHead(200, {"Content-Type": "image/png"});
    fs.createReadStream("test.png").pipe(response);
}

exports.start = start;
exports.upload = upload;
exports.show = show;