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//===========================================================================

//

//      wctomb_jp.cxx

//

//      Internal __wctombc_jp() routine 

//

//===========================================================================

//####ECOSGPLCOPYRIGHTBEGIN####

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

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// or inline functions from this file, or you compile this file and link it

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//===========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):     jjohnstn

// Contributors:  jjohnstn

// Date:          2000-11-16

// Purpose:       Provide internal use __wctomb_jp() routine

// Description:   Japanese locale version of wctomb()

// Usage:       

//

//####DESCRIPTIONEND####

//

//===========================================================================

//

// This code was taken from newlib/libc/stdlib/wctomb_r.c

//

// CONFIGURATION

#include <pkgconf/libc_i18n.h>     // Configuration header

// INCLUDES

#include <cyg/infra/cyg_type.h>    // Common type definitions

#include <cyg/infra/cyg_trac.h>    // Tracing support

#include <cyg/infra/cyg_ass.h>     // Assertion support

#include <locale.h>

#include <stdlib.h>                // Header for this file

#include <string.h>                // strcmp definition

#include <stddef.h>                // size_t definition

#include "internal.h"              // internal _isxxxx macros

#ifdef CYGSEM_LIBC_STDLIB_PER_THREAD_WCTOMB

# include <pkgconf/kernel.h>       // kernel configuration

# include <cyg/kernel/thread.hxx>  // per-thread data

# include <cyg/kernel/thread.inl>  // per-thread data

# include <cyg/kernel/mutex.hxx>   // mutexes

#endif

// TRACE

#if defined(CYGDBG_USE_TRACING) && defined(CYGNUM_LIBC_STDLIB_WCTOMB_TRACE_LEVEL)

static int wctomb_trace = CYGNUM_LIBC_STDLIB_WCTOMB_TRACE_LEVEL;

# define TL1 (0 < wctomb_trace)

#else

# define TL1 (0)

#endif

// FUNCTIONS

int

__wctomb_jp ( char *s, wchar_t wchar, int *state )

{

  const char *cur_locale = __current_ctype_locale->name;

  int         retval;

  CYG_REPORT_FUNCNAMETYPE( "__wctomb_jp", "returning %d" );

  CYG_REPORT_FUNCARG3( "s=%08x, wchar=%08x, state=%08x", s, wchar, state );

  if (s != NULL)

    CYG_CHECK_DATA_PTR( s, "s is not a valid pointer!" );

  CYG_CHECK_DATA_PTR( state, "state is not a valid pointer!" );

  if (strlen (cur_locale) <= 1)

    { /* fall-through */ }

#ifdef CYGFUN_LIBC_I18N_LOCALE_C_SJIS

  else if (!strcmp (cur_locale, "C-SJIS"))

    {

      unsigned char char2 = (unsigned char)wchar;

      unsigned char char1 = (unsigned char)(wchar >> 8);

      if (s == NULL)

        {

          retval =  0;  /* not state-dependent */

          CYG_REPORT_RETVAL( retval );

          return retval;

        }

      if (char1 != 0x00)

        {

        /* first byte is non-zero..validate multi-byte char */

          if (_issjis1(char1) && _issjis2(char2))

            {

              *s++ = (char)char1;

              *s = (char)char2;

              retval = 2;

            }

          else

            retval = -1;

          CYG_REPORT_RETVAL( retval );

          return retval;

        }

    }

#endif /* CYGFUN_LIBC_I18N_LOCALE_C_SJIS */

#ifdef CYGFUN_LIBC_I18N_LOCALE_C_EUCJP

  else if (!strcmp (cur_locale, "C-EUCJP"))

    {

      unsigned char char2 = (unsigned char)wchar;

      unsigned char char1 = (unsigned char)(wchar >> 8);

      if (s == NULL)

        {

          retval =  0;  /* not state-dependent */

          CYG_REPORT_RETVAL( retval );

          return retval;

        }

      if (char1 != 0x00)

        {

        /* first byte is non-zero..validate multi-byte char */

          if (_iseucjp (char1) && _iseucjp (char2))

            {

              *s++ = (char)char1;

              *s = (char)char2;

              retval = 2;

            }

          else

            retval = -1;

          CYG_REPORT_RETVAL( retval );

          return retval;

        }

    }

#endif /* CYGFUN_LIBC_I18N_LOCALE_C_EUCJP */

#ifdef CYGFUN_LIBC_I18N_LOCALE_C_JIS

  else if (!strcmp (cur_locale, "C-JIS"))

    {

      int cnt = 0;

      unsigned char char2 = (unsigned char)wchar;

      unsigned char char1 = (unsigned char)(wchar >> 8);

      if (s == NULL)

        {

          retval = 1;  /* state-dependent */

          CYG_REPORT_RETVAL( retval );

          return retval;

        }

      if (char1 != 0x00)

        {

        /* first byte is non-zero..validate multi-byte char */

          if (_isjis (char1) && _isjis (char2))

            {

              if (*state == 0)

                {

                  /* must switch from ASCII to JIS state */

                  *state = 1;

                  *s++ = ESC_CHAR;

                  *s++ = '$';

                  *s++ = 'B';

                  cnt = 3;

                }

              *s++ = (char)char1;

              *s = (char)char2;

              retval = cnt + 2;

            }

          else

            retval = -1;

        }

      else

        {

          if (*state != 0)

            {

              /* must switch from JIS to ASCII state */

              *state = 0;

              *s++ = ESC_CHAR;

              *s++ = '(';

              *s++ = 'B';

              cnt = 3;

            }

          *s = (char)char2;

          retval = cnt + 1;

        }

      CYG_REPORT_RETVAL( retval );

      return retval;

    }

#endif /* CYGFUN_LIBC_I18N_LOCALE_C_JIS */

  if (s == NULL)

    retval = 0;

  else

    {

      *s = (char) wchar;

      retval = 1;

    }

  CYG_REPORT_RETVAL( retval );

  return retval;

} // __wctomb_jp()

// EOF wctomb_jp.cxx