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