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/*--------
* Module : multibyte.c
*
* Description: Mlutibyte related additional function.
*
* Create 2001-03-03 Eiji Tokuya
*--------
*/
#include "multibyte.h"
#include <string.h>
int multibyte_client_encoding; /* Multibyte Client Encoding. */
int multibyte_status; /* Multibyte Odds and ends character. */
unsigned char *
multibyte_strchr(unsigned char *s, unsigned char c)
{
int mb_st = 0,
i = 0;
while (!(mb_st == 0 && (s[i] == c || s[i] == 0)))
{
if (s[i] == 0)
return (0);
switch (multibyte_client_encoding)
{
case SJIS:
{
if (mb_st < 2 && s[i] > 0x80 && !(s[i] > 0x9f && s[i] < 0xe0))
mb_st = 2;
else if (mb_st == 2)
mb_st = 1;
else
mb_st = 0;
}
break;
/* Chinese Big5 Support. */
case BIG5:
{
if (mb_st < 2 && s[i] > 0xA0)
mb_st = 2;
else if (mb_st == 2)
mb_st = 1;
else
mb_st = 0;
}
break;
default:
mb_st = 0;
}
i++;
}
#ifdef _DEBUG
qlog("i = %d\n", i);
#endif
return (s + i);
}
void
multibyte_init(void)
{
multibyte_status = 0;
}
unsigned char *
check_client_encoding(unsigned char *str)
{
if (strstr(str, "%27SJIS%27") ||
strstr(str, "%27Shift_JIS%27") ||
strstr(str, "'SJIS'") ||
strstr(str, "'sjis'") ||
strstr(str, "'Shift_JIS'"))
{
multibyte_client_encoding = SJIS;
return ("SJIS");
}
if (strstr(str, "%27BIG5%27") ||
strstr(str, "%27Big5%27") ||
strstr(str, "'BIG5'") ||
strstr(str, "'big5'") ||
strstr(str, "'Big5'"))
{
multibyte_client_encoding = BIG5;
return ("BIG5");
}
return ("OTHER");
}
/*--------
* Multibyte Status Function.
* Input char
* Output 0 : 1 Byte Character.
* 1 : MultibyteCharacter Last Byte.
* N : MultibyteCharacter Fast or Middle Byte.
*--------
*/
int
multibyte_char_check(unsigned char s)
{
switch (multibyte_client_encoding)
{
/* Japanese Shift-JIS(CP932) Support. */
case SJIS:
{
if (multibyte_status < 2 && s > 0x80 && !(s > 0x9f && s < 0xE0))
multibyte_status = 2;
else if (multibyte_status == 2)
multibyte_status = 1;
else
multibyte_status = 0;
}
break;
/* Chinese Big5(CP950) Support. */
case BIG5:
{
if (multibyte_status < 2 && s > 0xA0)
multibyte_status = 2;
else if (multibyte_status == 2)
multibyte_status = 1;
else
multibyte_status = 0;
}
break;
default:
multibyte_status = 0;
}
#ifdef _DEBUG
qlog("multibyte_client_encoding = %d s = 0x%02X multibyte_stat = %d\n", multibyte_client_encoding, s, multibyte_status);
#endif
return (multibyte_status);
}
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