mirror of https://github.com/postgres/postgres
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/*
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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 *multibyte_strchr(unsigned char *s,unsigned char c) |
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{ |
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int mb_st = 0 ,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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{ |
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mb_st = 0; |
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} |
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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 multibyte_init(void) |
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{ |
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multibyte_status = 0; |
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} |
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unsigned char *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 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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{ |
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multibyte_status = 0; |
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} |
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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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} |
@ -0,0 +1,39 @@ |
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/*
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* |
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* Multibyte library header ( psqlODBC Only ) |
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* |
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* |
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*/ |
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/* PostgreSQL client encoding */ |
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#define SQL_ASCII 0 /* SQL/ASCII */ |
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#define EUC_JP 1 /* EUC for Japanese */ |
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#define EUC_CN 2 /* EUC for Chinese */ |
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#define EUC_KR 3 /* EUC for Korean */ |
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#define EUC_TW 4 /* EUC for Taiwan */ |
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#define UNICODE 5 /* Unicode UTF-8 */ |
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#define MULE_INTERNAL 6 /* Mule internal code */ |
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#define LATIN1 7 /* ISO-8859 Latin 1 */ |
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#define LATIN2 8 /* ISO-8859 Latin 2 */ |
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#define LATIN3 9 /* ISO-8859 Latin 3 */ |
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#define LATIN4 10 /* ISO-8859 Latin 4 */ |
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#define LATIN5 11 /* ISO-8859 Latin 5 */ |
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#define LATIN6 12 /* ISO-8859 Latin 6 */ |
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#define LATIN7 13 /* ISO-8859 Latin 7 */ |
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#define LATIN8 14 /* ISO-8859 Latin 8 */ |
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#define LATIN9 15 /* ISO-8859 Latin 9 */ |
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#define KOI8 16 /* KOI8-R */ |
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#define WIN 17 /* windows-1251 */ |
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#define ALT 18 /* Alternativny Variant (MS-DOS CP866) */ |
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#define SJIS 32 /* Shift JIS */ |
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#define BIG5 33 /* Big5 */ |
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#define WIN1250 34 /* windows-1250 */ |
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extern int multibyte_client_encoding ; /* Multibyte client encoding. */ |
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extern int multibyte_status ; /* Multibyte charcter status. */ |
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void multibyte_init(void); |
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unsigned char *check_client_encoding(unsigned char *str); |
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int multibyte_char_check(unsigned char s); |
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unsigned char *multibyte_strchr(unsigned char *s, unsigned char c); |
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