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86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
// -*- C++ -*-
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//=========================================================================
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/**
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* @file UTF16_Encoding_Converter.h
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*
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* $Id: UTF16_Encoding_Converter.h 80826 2008-03-04 14:51:23Z wotte $
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*
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* This class contains declarations for methods that convert between
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* UTF-16 (both BE and LE) and UTF-8
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*
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* @author Chad Elliott <elliott_c@ociweb.com>
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*/
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//=========================================================================
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#ifndef ACE_UTF16_ENCODING_CONVERTER_H
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#define ACE_UTF16_ENCODING_CONVERTER_H
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#include /**/ "ace/pre.h"
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#include "ace/Encoding_Converter.h"
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#if defined (ACE_USES_WCHAR)
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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/** Convert from UTF-16 to UTF-8 and from UTF-8 to UTF-16.
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* This class implements the ACE_Encoding_Converter interface.
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*/
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class ACE_UTF16_Encoding_Converter: public ACE_Encoding_Converter
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{
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public:
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/// The swap parameter determines whether we need to swap byte order on
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/// the stream as each word is pulled off when converting to UTF-8.
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ACE_UTF16_Encoding_Converter (bool swap = false);
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/// This is a do nothing destructor.
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virtual ~ACE_UTF16_Encoding_Converter (void);
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/// Convert the source from UTF-16 to UTF-8 and store it in the
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/// provided target buffer.
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virtual Result to_utf8 (const void* source,
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size_t source_size,
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ACE_Byte* target,
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size_t target_size,
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bool strict = true);
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/// Convert the UTF-8 source into a UTF-16 encoding and store it
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/// in the provided target buffer.
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virtual Result from_utf8 (const ACE_Byte* source,
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size_t source_size,
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void* target,
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size_t target_size,
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bool strict = true);
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/// This factory helper method determines if the source stream is UTF-16
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/// encoded. If it is, allocate an ACE_UTF16_Encoding_Converter and
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/// return it. The caller then owns the allocated object.
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static ACE_UTF16_Encoding_Converter* encoded (const ACE_Byte* source,
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size_t source_size);
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protected:
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/// Determines if the source buffer is legal UTF-8
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bool is_legal_utf8 (const ACE_Byte* source,
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size_t length) const;
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static ACE_UINT32 get_UNI_SUR_HIGH_START (void);
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static ACE_UINT32 get_UNI_SUR_LOW_END (void);
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static ACE_UINT32 get_UNI_REPLACEMENT_CHAR (void);
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static const ACE_Byte* get_first_byte_mark (void);
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static const ACE_Byte* get_trailing_bytes_for_utf8 (void);
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static const ACE_UINT32* get_offsets_from_utf8 (void);
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bool swap_;
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};
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ACE_END_VERSIONED_NAMESPACE_DECL
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#if defined (__ACE_INLINE__)
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#include "ace/UTF16_Encoding_Converter.inl"
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#endif /* __ACE_INLINE__ */
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#endif /* ACE_USES_WCHAR */
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#include /**/ "ace/post.h"
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#endif /* ACE_UTF16_ENCODING_CONVERTER_H */
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