Issue #1258 - Part 1: Import mailnews, ldap, and mork from comm-esr52.9.1

mailnews/mime/public/MimeEncoder.h

@@ -0,0 +1,44 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef MimeEncoder_h__
+#define MimeEncoder_h__
+
+#include "nscore.h"
+
+namespace mozilla {
+namespace mailnews {
+
+/// A class for encoding the bodies of MIME parts.
+class MimeEncoder {
+public:
+  virtual ~MimeEncoder() {}
+
+  /// A callback for writing the encoded output
+  typedef nsresult (*OutputCallback)
+    (const char *buf, int32_t size, void *closure);
+
+  /// Encodes the string in the buffer and sends it to the callback
+  virtual nsresult Write(const char *buffer, int32_t size) = 0;
+  /// Flush all pending data when no more data exists
+  virtual nsresult Flush() { return NS_OK; }
+
+  /// Get an encoder that outputs Base64-encoded data
+  static MimeEncoder *GetBase64Encoder(OutputCallback callback, void *closure);
+  /// Get an encoder that outputs quoted-printable data
+  static MimeEncoder *GetQPEncoder(OutputCallback callback, void *closure);
+
+protected:
+  MimeEncoder(OutputCallback callback, void *closure);
+  OutputCallback mCallback;
+  void *mClosure;
+  uint32_t mCurrentColumn;
+};
+
+} // namespace mailnews
+} // namespace mozilla
+
+#endif