File support is nearly there.

lib/body_parser.dart

@@ -12,6 +12,9 @@ class BodyParseResult {
 
   /// The parsed query string.
   Map query = {};
+
+  /// All files uploaded within this request.
+  List<Map> files = [];
 }
 
 /// Grabs data from an incoming request.
@@ -39,14 +42,48 @@ Future<BodyParseResult> parseBody(HttpRequest request) async {
     buildMapFromUri(result.query, queryMatch.group(1));
   }
 
+  // Accept file
+  if (contentType != null && request.method == 'POST') {
+    RegExp parseBoundaryRgx = new RegExp(
+        r'^multipart\/form-data;\s*boundary=(.+)$');
+    if (parseBoundaryRgx.hasMatch(contentType.toString())) {
+      Match boundaryMatch = parseBoundaryRgx.firstMatch(contentType.toString());
+      String body = await request.transform(UTF8.decoder).join();
+      for (String chunk in body.split(boundaryMatch.group(1))) {
+        var fileData = getFileDataFromChunk(chunk);
+        if (fileData != null)
+          result.files.add(fileData);
+      }
+    }
+  }
+
   return result;
 }
 
+/// Parses file data from a multipart/form-data chunk.
+Map getFileDataFromChunk(String chunk) {
+  Map result = {};
+  RegExp isFormDataRgx = new RegExp(
+      r'Content-Dispositition:\s*form-data;\s*name="([^"]+)"');
+
+  if (isFormDataRgx.hasMatch(chunk)) {
+    result['name'] = isFormDataRgx.firstMatch(chunk).group(1);
+
+    RegExp contentTypeRgx = new RegExp(r'Content-Type:\s*([^\n]+)');
+    if (contentTypeRgx.hasMatch(chunk)) {
+      result['type'] = contentTypeRgx.firstMatch(chunk).group(1);
+      return result;
+    }
+  }
+
+  return null;
+}
+
 /// Parses a URI-encoded string into real data! **Wow!**
 ///
 /// Whichever map you provide will be automatically populated from the urlencoded body string you provide.
 buildMapFromUri(Map map, String body) {
-  RegExp parseArray = new RegExp(r'^(.+)\[\]$');
+  RegExp parseArrayRgx = new RegExp(r'^(.+)\[\]$');
 
   for (String keyValuePair in body.split('&')) {
     if (keyValuePair.contains('=')) {
@@ -54,15 +91,15 @@ buildMapFromUri(Map map, String body) {
       String key = Uri.decodeQueryComponent(split[0]);
       String value = Uri.decodeQueryComponent(split[1]);
 
-      if (parseArray.hasMatch(key)) {
-        Match queryMatch = parseArray.firstMatch(key);
+      if (parseArrayRgx.hasMatch(key)) {
+        Match queryMatch = parseArrayRgx.firstMatch(key);
         key = queryMatch.group(1);
         if (!(map[key] is List)) {
           map[key] = [];
         }
 
         map[key].add(getValue(value));
-      } else if(key.contains('.')) {
+      } else if (key.contains('.')) {
         // i.e. map.foo.bar => [map, foo, bar]
         List<String> keys = key.split('.');
 

test/all_tests.dart

@@ -38,7 +38,7 @@ main() {
         print('GET $url/?hello=world');
         var response = await client.get('$url/?hello=world');
         print('Response: ${response.body}');
-        expect(response.body, equals('{"body":{},"query":{"hello":"world"}}'));
+        expect(response.body, equals('{"body":{},"query":{"hello":"world"},"files":[]}'));
       });
 
       test('GET Complex', () async {
@@ -64,7 +64,7 @@ main() {
         var response = await client.post(
             url, headers: headers, body: 'hello=world');
         print('Response: ${response.body}');
-        expect(response.body, equals('{"body":{"hello":"world"},"query":{}}'));
+        expect(response.body, equals('{"body":{"hello":"world"},"query":{},"files":[]}'));
       });
 
       test('Post Complex', () async {
@@ -91,7 +91,7 @@ main() {
         var response = await client.post(
             url, headers: headers, body: postData);
         print('Response: ${response.body}');
-        expect(response.body, equals('{"body":{"hello":"world"},"query":{}}'));
+        expect(response.body, equals('{"body":{"hello":"world"},"query":{},"files":[]}'));
       });
 
       test('Post Complex', () async {
@@ -114,5 +114,28 @@ main() {
         expect(body['map']['foo'], equals({'bar': 'baz'}));
       });
     });
+
+    group('File', () {
+      test('Single upload', () async {
+        String boundary = '----myBoundary';
+        Map headers = {
+          HttpHeaders.CONTENT_TYPE: 'multipart/form-data; boundary=$boundary'
+        };
+        String postData = '''
+
+      $boundary
+      Content-Dispositition: form-data; name="file"
+      Content-Type: text/plain
+
+      Hello world
+      $boundary--
+      ''';
+
+        print('Form Data: \n$postData');
+        var response = await client.post(url, headers: headers, body: postData);
+        print('Response: ${response.body}');
+        var body = god.deserialize(response.body)['body'];
+      });
+    });
   });
 }