1 files changed, 66 insertions, 0 deletions
diff --git a/mailnews/import/src/nsImportTranslator.h b/mailnews/import/src/nsImportTranslator.h
new file mode 100644
index 000000000..998616063
--- /dev/null
+++ b/mailnews/import/src/nsImportTranslator.h
@@ -0,0 +1,66 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* 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 nsImportTranslator_h___
+#define nsImportTranslator_h___
+
+#include "mozilla/Attributes.h"
+#include "nscore.h"
+#include "nsStringGlue.h"
+#include "nsCOMPtr.h"
+
+class ImportOutFile;
+
+class UMimeEncode {
+public:
+  static uint32_t  GetBufferSize(uint32_t inByes);
+  static uint32_t  ConvertBuffer(const uint8_t * pIn, uint32_t inLen, uint8_t *pOut, uint32_t maxLen = 72, uint32_t firstLineLen = 72, const char * pEolStr = nullptr);
+};
+
+
+class nsImportTranslator {
+public:
+  virtual ~nsImportTranslator() {}
+  virtual bool      Supports8bitEncoding(void) { return false;}
+  virtual uint32_t  GetMaxBufferSize(uint32_t inLen) { return inLen + 1;}
+  virtual void    ConvertBuffer(const uint8_t * pIn, uint32_t inLen, uint8_t * pOut) { memcpy(pOut, pIn, inLen); pOut[inLen] = 0;}
+  virtual bool      ConvertToFile(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed = nullptr);
+  virtual bool      FinishConvertToFile(ImportOutFile * /* pOutFile */) { return true;}
+
+  virtual void  GetCharset(nsCString& charSet) { charSet = "us-ascii";}
+  virtual void  GetLanguage(nsCString& lang) { lang = "en";}
+  virtual void  GetEncoding(nsCString& encoding) { encoding.Truncate();}
+};
+
+// Specialized encoder, not a vaild language translator, used for Mime headers.
+// rfc2231
+class CMHTranslator : public nsImportTranslator {
+public:
+  virtual uint32_t  GetMaxBufferSize(uint32_t inLen) override { return (inLen * 3) + 1;}
+  virtual void    ConvertBuffer(const uint8_t * pIn, uint32_t inLen, uint8_t * pOut) override;
+  virtual bool      ConvertToFile(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed = nullptr) override;
+};
+
+// Specialized encoder, not a vaild language translator, used for mail headers
+// rfc2047
+class C2047Translator : public nsImportTranslator {
+public:
+  virtual ~C2047Translator() {}
+
+  C2047Translator(const char *pCharset, uint32_t headerLen) { m_charset = pCharset; m_startLen = headerLen; m_useQuotedPrintable = false;}
+
+  void  SetUseQuotedPrintable(void) { m_useQuotedPrintable = true;}
+
+  virtual bool    ConvertToFile(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed = nullptr) override;
+  bool    ConvertToFileQ(const uint8_t * pIn, uint32_t inLen, ImportOutFile *pOutFile, uint32_t *pProcessed);
+
+protected:
+  bool        m_useQuotedPrintable;
+  nsCString    m_charset;
+  uint32_t    m_startLen;
+};
+
+#endif /* nsImportTranslator_h__ */
+