michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  *
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsPrimitiveHelpers_h___
michael@0: #define nsPrimitiveHelpers_h___
michael@0: 
michael@0: #include "nsError.h"
michael@0: #include "nscore.h"
michael@0: 
michael@0: class nsISupports;
michael@0: 
michael@0: 
michael@0: class nsPrimitiveHelpers
michael@0: {
michael@0: public:
michael@0: 
michael@0:     // Given some data and the flavor it corresponds to, creates the appropriate
michael@0:     // nsISupports* wrapper for passing across IDL boundaries. The length parameter
michael@0:     // should not include the null if the data is null terminated.
michael@0:   static void CreatePrimitiveForData ( const char* aFlavor, const void* aDataBuff,
michael@0:                                          uint32_t aDataLen, nsISupports** aPrimitive ) ;
michael@0: 
michael@0:     // Given a nsISupports* primitive and the flavor it represents, creates a new data
michael@0:     // buffer with the data in it. This data will be null terminated, but the length
michael@0:     // parameter does not reflect that.
michael@0:   static void CreateDataFromPrimitive ( const char* aFlavor, nsISupports* aPrimitive, 
michael@0:                                          void** aDataBuff, uint32_t aDataLen ) ;
michael@0: 
michael@0:     // Given a unicode buffer (flavor text/unicode), this converts it to plain text using
michael@0:     // the appropriate platform charset encoding. |inUnicodeLen| is the length of the input
michael@0:     // string, not the # of bytes in the buffer. |outPlainTextData| is null terminated, 
michael@0:     // but its length parameter, |outPlainTextLen|, does not reflect that.
michael@0:   static nsresult ConvertUnicodeToPlatformPlainText ( char16_t* inUnicode, int32_t inUnicodeLen, 
michael@0:                                                     char** outPlainTextData, int32_t* outPlainTextLen ) ;
michael@0: 
michael@0:     // Given a char buffer (flavor text/plaikn), this converts it to unicode using
michael@0:     // the appropriate platform charset encoding. |outUnicode| is null terminated, 
michael@0:     // but its length parameter, |outUnicodeLen|, does not reflect that. |outUnicodeLen| is
michael@0:     // the length of the string in characters, not bytes.
michael@0:   static nsresult ConvertPlatformPlainTextToUnicode ( const char* inText, int32_t inTextLen, 
michael@0:                                                     char16_t** outUnicode, int32_t* outUnicodeLen ) ;
michael@0: 
michael@0: }; // class nsPrimitiveHelpers
michael@0: 
michael@0: 
michael@0: 
michael@0: class nsLinebreakHelpers
michael@0: {
michael@0: public:
michael@0: 
michael@0:     // Given some data, convert from the platform linebreaks into the LF expected by the
michael@0:     // DOM. This will attempt to convert the data in place, but the buffer may still need to
michael@0:     // be reallocated regardless (disposing the old buffer is taken care of internally, see
michael@0:     // the note below).
michael@0:     //
michael@0:     // NOTE: this assumes that it can use nsMemory to dispose of the old buffer.
michael@0:   static nsresult ConvertPlatformToDOMLinebreaks ( const char* inFlavor, void** ioData, int32_t* ioLengthInBytes ) ;
michael@0: 
michael@0: }; // class nsLinebreakHelpers
michael@0: 
michael@0: 
michael@0: #endif // nsPrimitiveHelpers_h___