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// -*- C++ -*-
//=========================================================================
/**
* @file UTF16_Encoding_Converter.h
*
* $Id$
*
* This class contains declarations for methods that convert between
* UTF-16 (both BE and LE) and UTF-8
*
* @author Chad Elliott <elliott_c@ociweb.com>
*/
//=========================================================================
#ifndef ACE_UTF16_ENCODING_CONVERTER_H
#define ACE_UTF16_ENCODING_CONVERTER_H
#include /**/ "ace/pre.h"
#include "ace/Encoding_Converter.h"
#if defined (ACE_USES_WCHAR)
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
/** Convert from UTF-16 to UTF-8 and from UTF-8 to UTF-16.
* This class implements the ACE_Encoding_Converter interface.
*/
class ACE_UTF16_Encoding_Converter: public ACE_Encoding_Converter
{
public:
/// The swap parameter determines whether we need to swap byte order on
/// the stream as each word is pulled off when converting to UTF-8.
ACE_UTF16_Encoding_Converter (bool swap = false);
/// This is a do nothing destructor.
virtual ~ACE_UTF16_Encoding_Converter (void);
/// Convert the source from UTF-16 to UTF-8 and store it in the
/// provided target buffer.
virtual Result to_utf8 (const void* source,
size_t source_size,
ACE_Byte* target,
size_t target_size,
bool strict = true);
/// Convert the UTF-8 source into a UTF-16 encoding and store it
/// in the provided target buffer.
virtual Result from_utf8 (const ACE_Byte* source,
size_t source_size,
void* target,
size_t target_size,
bool strict = true);
/// This factory helper method determines if the source stream is UTF-16
/// encoded. If it is, allocate an ACE_UTF16_Encoding_Converter and
/// return it. The caller then owns the allocated object.
static ACE_UTF16_Encoding_Converter* encoded (const ACE_Byte* source,
size_t source_size);
protected:
/// Determines if the source buffer is legal UTF-8
bool is_legal_utf8 (const ACE_Byte* source,
size_t length) const;
static ACE_UINT32 get_UNI_SUR_HIGH_START (void);
static ACE_UINT32 get_UNI_SUR_LOW_END (void);
static ACE_UINT32 get_UNI_REPLACEMENT_CHAR (void);
static const ACE_Byte* get_first_byte_mark (void);
static const ACE_Byte* get_trailing_bytes_for_utf8 (void);
static const ACE_UINT32* get_offsets_from_utf8 (void);
bool swap_;
};
ACE_END_VERSIONED_NAMESPACE_DECL
#if defined (__ACE_INLINE__)
#include "ace/UTF16_Encoding_Converter.inl"
#endif /* __ACE_INLINE__ */
#endif /* ACE_USES_WCHAR */
#include /**/ "ace/post.h"
#endif /* ACE_UTF16_ENCODING_CONVERTER_H */
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