Use patching for dart:io.

runtime/bin/common.dart

-// Copyright (c) 2012, 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.
-
-// Constants used when working with native ports.
-const int _SUCCESS_RESPONSE = 0;
-const int _ILLEGAL_ARGUMENT_RESPONSE = 1;
-const int _OSERROR_RESPONSE = 2;
-const int _FILE_CLOSED_RESPONSE = 3;
-
-const int _ERROR_RESPONSE_ERROR_TYPE = 0;
-const int _OSERROR_RESPONSE_ERROR_CODE = 1;
-const int _OSERROR_RESPONSE_MESSAGE = 2;
-
-/**
-  * An [OSError] object holds information about an error from the
-  * operating system.
-  */
-class OSError {
-  /** Constant used to indicate that no OS error code is available. */
-  static const int noErrorCode = -1;
-
-  /** Creates an OSError object from a message and an errorCode. */
-  const OSError([String this.message = "", int this.errorCode = noErrorCode]);
-
-  /** Converts an OSError object to a string representation. */
-  String toString() {
-    StringBuffer sb = new StringBuffer();
-    sb.add("OS Error");
-    if (!message.isEmpty) {
-      sb.add(": ");
-      sb.add(message);
-      if (errorCode != noErrorCode) {
-        sb.add(", errno = ");
-        sb.add(errorCode.toString());
-      }
-    } else if (errorCode != noErrorCode) {
-      sb.add(": errno = ");
-      sb.add(errorCode.toString());
-    }
-    return sb.toString();
-  }
-
-  /**
-    * Error message supplied by the operating system. null if no message is
-    * associated with the error.
-    */
-  final String message;
-
-  /**
-    * Error code supplied by the operating system. Will have the value
-    * [noErrorCode] if there is no error code associated with the error.
-    */
-  final int errorCode;
-}
-
-
-// Check if a List is a builtin VM List type. Returns true
-// if the List is a builtin VM List type and false if it is
-// a user defined List type.
-bool _isBuiltinList(List buffer) native "Common_IsBuiltinList";
-
-
-// Object for holding a buffer and an offset.
-class _BufferAndOffset {
-  _BufferAndOffset(List this.buffer, int this.offset);
-  List buffer;
-  int offset;
-}
-
-
-// Ensure that the input List can be serialized through a native port.
-// Only builtin Lists can be serialized through. If user-defined Lists
-// get here, the contents is copied to a Uint8List. This has the added
-// benefit that it is faster to access from the C code as well.
-_BufferAndOffset _ensureFastAndSerializableBuffer(
-    List buffer, int offset, int bytes) {
-  if (buffer is Uint8List || _isBuiltinList(buffer)) {
-    return new _BufferAndOffset(buffer, offset);
-  }
-  var newBuffer = new Uint8List(bytes);
-  int j = offset;
-  for (int i = 0; i < bytes; i++) {
-    int value = buffer[j];
-    if (value is! int) {
-      throw new FileIOException("List element is not an integer at index $j");
-    }
-    newBuffer[i] = value;
-    j++;
-  }
-  return new _BufferAndOffset(newBuffer, 0);
-}