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#include <stdlib.h>
#include <string.h>
#include <locale.h>
#include "mbctype.h"
int
_DEFUN (_wctomb_r, (r, s, wchar, state),
struct _reent *r _AND
char *s _AND
wchar_t wchar _AND
int *state)
{
if (strlen (r->_current_locale) <= 1)
{ /* fall-through */ }
else if (!strcmp (r->_current_locale, "UTF-8"))
{
if (s == NULL)
return 0; /* UTF-8 encoding is not state-dependent */
if (wchar <= 0x7f)
{
*s = wchar;
return 1;
}
else if (wchar >= 0x80 && wchar <= 0x7ff)
{
*s++ = 0xc0 | ((wchar & 0x7c0) >> 6);
*s = 0x80 | (wchar & 0x3f);
return 2;
}
else if (wchar >= 0x800 && wchar <= 0xffff)
{
/* UTF-16 surrogates -- must not occur in normal UCS-4 data */
if (wchar >= 0xd800 && wchar <= 0xdfff)
return -1;
*s++ = 0xe0 | ((wchar & 0xf000) >> 12);
*s++ = 0x80 | ((wchar & 0xfc0) >> 6);
*s = 0x80 | (wchar & 0x3f);
return 3;
}
else if (wchar >= 0x10000 && wchar <= 0x1fffff)
{
*s++ = 0xf0 | ((wchar & 0x1c0000) >> 18);
*s++ = 0x80 | ((wchar & 0x3f000) >> 12);
*s++ = 0x80 | ((wchar & 0xfc0) >> 6);
*s = 0x80 | (wchar & 0x3f);
return 4;
}
else if (wchar >= 0x200000 && wchar <= 0x3ffffff)
{
*s++ = 0xf8 | ((wchar & 0x3000000) >> 24);
*s++ = 0x80 | ((wchar & 0xfc0000) >> 18);
*s++ = 0x80 | ((wchar & 0x3f000) >> 12);
*s++ = 0x80 | ((wchar & 0xfc0) >> 6);
*s = 0x80 | (wchar & 0x3f);
return 5;
}
else if (wchar >= 0x4000000 && wchar <= 0x7fffffff)
{
*s++ = 0xfc | ((wchar & 0x40000000) >> 30);
*s++ = 0x80 | ((wchar & 0x3f000000) >> 24);
*s++ = 0x80 | ((wchar & 0xfc0000) >> 18);
*s++ = 0x80 | ((wchar & 0x3f000) >> 12);
*s++ = 0x80 | ((wchar & 0xfc0) >> 6);
*s = 0x80 | (wchar & 0x3f);
return 6;
}
else
return -1;
}
else if (!strcmp (r->_current_locale, "C-SJIS"))
{
unsigned char char2 = (unsigned char)wchar;
unsigned char char1 = (unsigned char)(wchar >> 8);
if (s == NULL)
return 0; /* not state-dependent */
if (char1 != 0x00)
{
/* first byte is non-zero..validate multi-byte char */
if (_issjis1(char1) && _issjis2(char2))
{
*s++ = (char)char1;
*s = (char)char2;
return 2;
}
else
return -1;
}
}
else if (!strcmp (r->_current_locale, "C-EUCJP"))
{
unsigned char char2 = (unsigned char)wchar;
unsigned char char1 = (unsigned char)(wchar >> 8);
if (s == NULL)
return 0; /* not state-dependent */
if (char1 != 0x00)
{
/* first byte is non-zero..validate multi-byte char */
if (_iseucjp (char1) && _iseucjp (char2))
{
*s++ = (char)char1;
*s = (char)char2;
return 2;
}
else
return -1;
}
}
else if (!strcmp (r->_current_locale, "C-JIS"))
{
int cnt = 0;
unsigned char char2 = (unsigned char)wchar;
unsigned char char1 = (unsigned char)(wchar >> 8);
if (s == NULL)
return 1; /* state-dependent */
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;
return cnt + 2;
}
else
return -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;
return cnt + 1;
}
}
if (s == NULL)
return 0;
/* otherwise we are dealing with a single byte character */
*s = (char) wchar;
return 1;
}
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