New OutputStream interface

tests/standalone/src/FileTest.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
 // Dart test program for testing file I/O.
 
 
 class FileTest {
   // Test for file read functionality.
   static int testReadStream() {
@@ skipping 29 matching lines @@
     File file = new File(inFilename);
     FileInputStream input = file.openInputStream();
     List<int> buffer1 = new List<int>(42);
     int bytesRead = input.readInto(buffer1, 0, 42);
     Expect.equals(42, bytesRead);
     input.close();
     // Write the contents of the file just read into another file.
     String outFilename = getFilename("tests/vm/data/fixed_length_file_out");
     file = new File(outFilename);
     OutputStream output = file.openOutputStream();
-    bool writeDone = output.write(buffer1, 0, 42, null);
+    bool writeDone = output.writeFrom(buffer1, 0, 42);
     Expect.equals(true, writeDone);
     output.close();
     // Now read the contents of the file just written.
     List<int> buffer2 = new List<int>(42);
     file = new File(outFilename);
     input = file.openInputStream();
     bytesRead = input.readInto(buffer2, 0, 42);
     input.close();
     Expect.equals(42, bytesRead);
     // Now compare the two buffers to check if they are identical.
@@ skipping 191 matching lines @@
       List<int> buffer = new List<int>(42);
       input.readInto(buffer, 0, 12);
     } catch (FileIOException ex) {
       exceptionCaught = true;
     } catch (Exception ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     exceptionCaught = false;
-    FileOutputStream output = file.openOutputStream();
+    OutputStream output = file.openOutputStream();
     output.close();
     try {
       List<int> buffer = new List<int>(42);
-      bool readDone = output.write(buffer, 0, 12, null);
+      bool readDone = output.writeFrom(buffer, 0, 12);
     } catch (FileIOException ex) {
       exceptionCaught = true;
     } catch (Exception ex) {
       wrongExceptionCaught = true;
     }
     Expect.equals(true, exceptionCaught);
     Expect.equals(true, !wrongExceptionCaught);
     return 1;
   }
 
@@ skipping 110 matching lines @@
     Expect.equals(1, testPosition());
     Expect.equals(1, testCloseException());
     Expect.equals(1, testCloseExceptionStream());
     Expect.equals(1, testBufferOutOfBoundsException());
   }
 }
 
 main() {
   FileTest.testMain();
 }