/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 * 

 *      http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

/*

 * $Id: IconvFBSDTransService.hpp 568078 2007-08-21 11:43:25Z amassari $

 */

#ifndef ICONVFBSDTRANSSERVICE_HPP

#define ICONVFBSDTRANSSERVICE_HPP

#include <xercesc/util/TransService.hpp>

#ifdef XML_USE_LIBICONV

#  include <iconv.h>

#endif

XERCES_CPP_NAMESPACE_BEGIN

#ifdef XML_USE_LIBICONV

// ---------------------------------------------------------------------------

//  Libiconv wrapper (low-level conversion utilities collection)

// ---------------------------------------------------------------------------

class XMLUTIL_EXPORT IconvFBSDCD

{

public:

    // -----------------------------------------------------------------------

    //  Constructors and Destructor

    // -----------------------------------------------------------------------

    IconvFBSDCD

    (

	iconv_t		cd_from,

	iconv_t		cd_to,

	size_t		uchsize,

	unsigned int	ubo

    );

    virtual ~IconvFBSDCD();

    // Convert "native unicode" character into XMLCh

    void	mbcToXMLCh (const char *mbc, XMLCh *toRet) const;

    // Convert XMLCh into "native unicode" character

    void	xmlChToMbc (XMLCh xch, char *mbc) const;

    // Return uppercase equivalent for XMLCh

    XMLCh 	toUpper (const XMLCh ch) const;

    // Return uppercase equivalent for XMLCh

    XMLCh 	toLower (const XMLCh ch) const;

    // Check if passed characters belongs to the :space: class

    virtual bool isSpace(const XMLCh toCheck) const;

    // Fill array of XMLCh characters with data, supplyed in the array

    // of "native unicode" characters.

    XMLCh*	mbsToXML (

	const char*	mbs_str,

	size_t		mbs_cnt,

	XMLCh*		xml_str,

	size_t		xml_cnt

    ) const;

    // Fill array of "native unicode" characters with data, supplyed

    // in the array of XMLCh characters.

    char*	xmlToMbs

    (

	const XMLCh*	xml_str,

	size_t		xml_cnt,

	char*		mbs_str,

	size_t		mbs_cnt

    ) const;

    // Wrapper aroung the iconv() for transcoding from the local charset

    size_t	iconvFrom

    (

	const char	*fromPtr,

	size_t		*fromLen,

	char		**toPtr,

	size_t		toLen

    ) const;

    // Wrapper aroung the iconv() for transcoding to the local charset

    size_t	iconvTo

    (

	const char	*fromPtr,

	size_t		*fromLen,

	char		**toPtr,

	size_t		toLen

    ) const;

    // Private data accessors

    inline iconv_t	cdTo () const { return fCDTo; }

    inline iconv_t	cdFrom () const { return fCDFrom; }

    inline size_t	uChSize () const { return fUChSize; }

    inline unsigned int	UBO () const { return fUBO; }

protected:

    // Hiden defaull constructor

    IconvFBSDCD();

    // Private data accessors

    inline void	setCDTo (iconv_t cd) { fCDTo = cd; }

    inline void	setCDFrom (iconv_t cd) { fCDFrom = cd; }

    inline void	setUChSize (size_t sz) { fUChSize = sz; }

    inline void	setUBO (unsigned int u) { fUBO = u; }

private:

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    IconvFBSDCD(const IconvFBSDCD&);

    IconvFBSDCD& operator=(const IconvFBSDCD&);

    // -----------------------------------------------------------------------

    //  Private data members

    //

    //  fCDTo

    //	    Characterset conversion descriptor TO the local-host encoding

    //  fCDFrom

    //	    Characterset conversion descriptor FROM the local-host encoding

    //  fUChSize

    //      Sizeof the "native unicode" character in bytes

    //  fUBO

    //      "Native unicode" characters byte order

    // -----------------------------------------------------------------------

    size_t	fUChSize;

    unsigned int fUBO;

    iconv_t	fCDTo;

    iconv_t	fCDFrom;

};

#endif /* XML_USE_LIBICONV */

// ---------------------------------------------------------------------------

//  FreeBSD-specific Transcoding Service implementation

// ---------------------------------------------------------------------------

class XMLUTIL_EXPORT IconvFBSDTransService : public XMLTransService

#ifdef XML_USE_LIBICONV

, IconvFBSDCD

#endif

{

public :

    // -----------------------------------------------------------------------

    //  Constructors and Destructor

    // -----------------------------------------------------------------------

    IconvFBSDTransService();

    ~IconvFBSDTransService();

    // -----------------------------------------------------------------------

    //  Implementation of the virtual transcoding service API

    // -----------------------------------------------------------------------

    virtual int compareIString

    (

        const   XMLCh* const    comp1

        , const XMLCh* const    comp2

    );

    virtual int compareNIString

    (

        const   XMLCh* const    comp1

        , const XMLCh* const    comp2

        , const unsigned int    maxChars

    );

    virtual const XMLCh* getId() const;

    virtual bool isSpace(const XMLCh toCheck) const;

    virtual XMLLCPTranscoder* makeNewLCPTranscoder();

    virtual bool supportsSrcOfs() const;

    virtual void upperCase(XMLCh* const toUpperCase) const;

    virtual void lowerCase(XMLCh* const toUpperCase) const;

protected :

    // -----------------------------------------------------------------------

    //  Protected virtual methods

    // -----------------------------------------------------------------------

    virtual XMLTranscoder* makeNewXMLTranscoder

    (

        const   XMLCh* const            encodingName

        ,       XMLTransService::Codes& resValue

        , const unsigned int            blockSize

        ,       MemoryManager* const    manager

    );

private :

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    IconvFBSDTransService(const IconvFBSDTransService&);

    IconvFBSDTransService& operator=(const IconvFBSDTransService&);

#ifdef XML_USE_LIBICONV

    // -----------------------------------------------------------------------

    //  Private data members

    //

    //  fUnicodeCP

    //      Unicode encoding schema name

    // -----------------------------------------------------------------------

    const char*	fUnicodeCP;

#endif /* XML_USE_LIBICONV */

};

#ifdef XML_USE_LIBICONV

//----------------------------------------------------------------------------

// Implementation of the transcoders for arbitrary input characterset is

// supported ONLY through libiconv interface

//----------------------------------------------------------------------------

class XMLUTIL_EXPORT IconvFBSDTranscoder : public XMLTranscoder, IconvFBSDCD

{

public :

    // -----------------------------------------------------------------------

    //  Constructors and Destructor

    // -----------------------------------------------------------------------

    IconvFBSDTranscoder(const	XMLCh* const	encodingName

			, const unsigned int	blockSize

			,	iconv_t		cd_from

			,	iconv_t		cd_to

			,	size_t		uchsize

			,	unsigned int	ubo

			, MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager

    );

    ~IconvFBSDTranscoder();

    // -----------------------------------------------------------------------

    //  Implementation of the virtual transcoder interface

    // -----------------------------------------------------------------------

    virtual unsigned int transcodeFrom

    (

        const   XMLByte* const          srcData

        , const unsigned int            srcCount

        ,       XMLCh* const            toFill

        , const unsigned int            maxChars

        ,       unsigned int&           bytesEaten

        ,       unsigned char* const    charSizes

    );

    virtual unsigned int transcodeTo

    (

        const   XMLCh* const	srcData

        , const unsigned int	srcCount

        ,       XMLByte* const	toFill

        , const unsigned int	maxBytes

        ,       unsigned int&	charsEaten

        , const UnRepOpts	options

    );

    virtual bool canTranscodeTo

    (

        const   unsigned int	toCheck

    )   const;

private :

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    IconvFBSDTranscoder();

    IconvFBSDTranscoder(const IconvFBSDTranscoder&);

    IconvFBSDTranscoder& operator=(const IconvFBSDTranscoder&);

};

#endif /* XML_USE_LIBICONV */

// ---------------------------------------------------------------------------

//  FreeBSD-specific XMLCh <-> local (host) characterset transcoder

// ---------------------------------------------------------------------------

class XMLUTIL_EXPORT IconvFBSDLCPTranscoder : public XMLLCPTranscoder

#ifdef XML_USE_LIBICONV

, IconvFBSDCD

#endif

{

public :

    // -----------------------------------------------------------------------

    //  Constructors and Destructor

    // -----------------------------------------------------------------------

#ifdef XML_USE_LIBICONV

    IconvFBSDLCPTranscoder

    (

	iconv_t		from,

	iconv_t		to,

	size_t		uchsize,

	unsigned int	ubo

    );

protected:

    IconvFBSDLCPTranscoder();	// Unimplemented

public:

#else /* !XML_USE_LIBICONV */

    IconvFBSDLCPTranscoder();

#endif /* XML_USE_LIBICONV */

    ~IconvFBSDLCPTranscoder();

    // -----------------------------------------------------------------------

    //  Implementation of the virtual transcoder interface

    // -----------------------------------------------------------------------

    virtual unsigned int calcRequiredSize(const char* const srcText

        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);

    virtual unsigned int calcRequiredSize(const XMLCh* const srcText

        , MemoryManager* const manager = XMLPlatformUtils::fgMemoryManager);

    virtual char* transcode(const XMLCh* const toTranscode);

    virtual char* transcode(const XMLCh* const toTranscode,

                            MemoryManager* const manager);

    virtual bool transcode

    (

        const   XMLCh* const    toTranscode

        ,       char* const     toFill

        , const unsigned int    maxBytes

        , MemoryManager* const  manager = XMLPlatformUtils::fgMemoryManager

    );

    virtual XMLCh* transcode(const char* const toTranscode);

    virtual XMLCh* transcode(const char* const toTranscode,

                             MemoryManager* const manager);

    virtual bool transcode

    (

        const   char* const     toTranscode

        ,       XMLCh* const    toFill

        , const unsigned int    maxChars

        , MemoryManager* const  manager = XMLPlatformUtils::fgMemoryManager

    );

private :

    // -----------------------------------------------------------------------

    //  Unimplemented constructors and operators

    // -----------------------------------------------------------------------

    IconvFBSDLCPTranscoder(const IconvFBSDLCPTranscoder&);

    IconvFBSDLCPTranscoder& operator=(const IconvFBSDLCPTranscoder&);

};

XERCES_CPP_NAMESPACE_END

#endif /* ICONVFBSDTRANSSERVICE */