done purchases remove, ocr scan, read image

express-server/node_modules/dicer/bench/multiparty-bench-multipart-parser.js

@@ -0,0 +1,76 @@
+var assert = require('assert'),
+    Form = require('multiparty').Form,
+    boundary = '-----------------------------168072824752491622650073',
+    mb = 100,
+    buffer = createMultipartBuffer(boundary, mb * 1024 * 1024),
+    callbacks =
+      { partBegin: -1,
+        partEnd: -1,
+        headerField: -1,
+        headerValue: -1,
+        partData: -1,
+        end: -1,
+      };
+
+var form = new Form({ boundary: boundary });
+
+hijack('onParseHeaderField', function() {
+  callbacks.headerField++;
+});
+
+hijack('onParseHeaderValue', function() {
+  callbacks.headerValue++;
+});
+
+hijack('onParsePartBegin', function() {
+  callbacks.partBegin++;
+});
+
+hijack('onParsePartData', function() {
+  callbacks.partData++;
+});
+
+hijack('onParsePartEnd', function() {
+  callbacks.partEnd++;
+});
+
+form.on('finish', function() {
+  callbacks.end++;
+});
+
+var start = new Date();
+form.write(buffer, function(err) {
+  var duration = new Date() - start;
+  assert.ifError(err);
+  var mbPerSec = (mb / (duration / 1000)).toFixed(2);
+  console.log(mbPerSec+' mb/sec');
+});
+
+//assert.equal(nparsed, buffer.length);
+
+function createMultipartBuffer(boundary, size) {
+  var head =
+        '--'+boundary+'\r\n'
+      + 'content-disposition: form-data; name="field1"\r\n'
+      + '\r\n'
+    , tail = '\r\n--'+boundary+'--\r\n'
+    , buffer = new Buffer(size);
+
+  buffer.write(head, 'ascii', 0);
+  buffer.write(tail, 'ascii', buffer.length - tail.length);
+  return buffer;
+}
+
+process.on('exit', function() {
+  /*for (var k in callbacks) {
+    assert.equal(0, callbacks[k], k+' count off by '+callbacks[k]);
+  }*/
+});
+
+function hijack(name, fn) {
+  var oldFn = form[name];
+  form[name] = function() {
+    fn();
+    return oldFn.apply(this, arguments);
+  };
+}