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357 lines (338 loc) · 9.88 KB
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#include "multibyte.h"
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "misc.h"
#include "opensearch_apifunc.h"
#include "opensearch_connection.h"
#ifndef WIN32
#include <locale.h>
#endif
#ifndef TRUE
#define TRUE 1
#endif
typedef struct OPENSEARCH_CS {
char *name;
int code;
} OPENSEARCH_CS;
static OPENSEARCH_CS CS_Table[] = {
{"SQL_ASCII", SQL_ASCII},
{"EUC_JP", EUC_JP},
{"EUC_CN", EUC_CN},
{"EUC_KR", EUC_KR},
{"EUC_TW", EUC_TW},
{"JOHAB", JOHAB}, /* since 7.3 */
{"UTF8", UTF8}, /* since 7.2 */
{"MULE_INTERNAL", MULE_INTERNAL},
{"LATIN1", LATIN1},
{"LATIN2", LATIN2},
{"LATIN3", LATIN3},
{"LATIN4", LATIN4},
{"LATIN5", LATIN5},
{"LATIN6", LATIN6},
{"LATIN7", LATIN7},
{"LATIN8", LATIN8},
{"LATIN9", LATIN9},
{"LATIN10", LATIN10},
{"WIN1256", WIN1256}, /* Arabic since 7.3 */
{"WIN1258", WIN1258}, /* Vietnamese since 8.1 */
{"WIN866", WIN866}, /* since 8.1 */
{"WIN874", WIN874}, /* Thai since 7.3 */
{"KOI8", KOI8R},
{"WIN1251", WIN1251}, /* Cyrillic */
{"WIN1252", WIN1252}, /* Western Europe since 8.1 */
{"ISO_8859_5", ISO_8859_5},
{"ISO_8859_6", ISO_8859_6},
{"ISO_8859_7", ISO_8859_7},
{"ISO_8859_8", ISO_8859_8},
{"WIN1250", WIN1250}, /* Central Europe */
{"WIN1253", WIN1253}, /* Greek since 8.2 */
{"WIN1254", WIN1254}, /* Turkish since 8.2 */
{"WIN1255", WIN1255}, /* Hebrew since 8.2 */
{"WIN1257", WIN1257}, /* Baltic(North Europe) since 8.2 */
{"EUC_JIS_2004",
EUC_JIS_2004}, /* EUC for SHIFT-JIS-2004 Japanese, since 8.3 */
{"SJIS", SJIS},
{"BIG5", BIG5},
{"GBK", GBK}, /* since 7.3 */
{"UHC", UHC}, /* since 7.3 */
{"GB18030", GB18030}, /* since 7.3 */
{"SHIFT_JIS_2004", SHIFT_JIS_2004}, /* SHIFT-JIS-2004 Japanese, standard JIS
X 0213, since 8.3 */
{"OTHER", OTHER}};
static OPENSEARCH_CS CS_Alias[] = {{"UNICODE", UTF8}, {"TCVN", WIN1258},
{"ALT", WIN866}, {"WIN", WIN1251},
{"KOI8R", KOI8R}, {"OTHER", OTHER}};
int opensearch_CS_code(const char *characterset_string) {
int i, c = -1;
for (i = 0; CS_Table[i].code != OTHER; i++) {
if (0 == stricmp(characterset_string, CS_Table[i].name)) {
c = CS_Table[i].code;
break;
}
}
if (c < 0) {
for (i = 0; CS_Alias[i].code != OTHER; i++) {
if (0 == stricmp(characterset_string, CS_Alias[i].name)) {
c = CS_Alias[i].code;
break;
}
}
}
if (c < 0)
c = OTHER;
return (c);
}
int opensearch_mb_maxlen(int characterset_code) {
switch (characterset_code) {
case UTF8:
return 4;
case EUC_TW:
return 4;
case EUC_JIS_2004:
case EUC_JP:
case GB18030:
return 3;
case SHIFT_JIS_2004:
case SJIS:
case BIG5:
case GBK:
case UHC:
case EUC_CN:
case EUC_KR:
case JOHAB:
return 2;
default:
return 1;
}
}
static int opensearch_CS_stat(int stat, unsigned int character, int characterset_code) {
if (character == 0)
stat = 0;
switch (characterset_code) {
case UTF8: {
if (stat < 2 && character >= 0x80) {
if (character >= 0xfc)
stat = 6;
else if (character >= 0xf8)
stat = 5;
else if (character >= 0xf0)
stat = 4;
else if (character >= 0xe0)
stat = 3;
else if (character >= 0xc0)
stat = 2;
} else if (stat >= 2 && character > 0x7f)
stat--;
else
stat = 0;
} break;
/* SHIFT_JIS_2004 Support. */
case SHIFT_JIS_2004: {
if (stat < 2 && character >= 0x81 && character <= 0x9f)
stat = 2;
else if (stat < 2 && character >= 0xe0 && character <= 0xef)
stat = 2;
else if (stat < 2 && character >= 0xf0 && character <= 0xfc)
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
/* Shift-JIS Support. */
case SJIS: {
if (stat < 2 && character > 0x80
&& !(character > 0x9f && character < 0xe0))
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
/* Chinese Big5 Support. */
case BIG5: {
if (stat < 2 && character > 0xA0)
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
/* Chinese GBK Support. */
case GBK: {
if (stat < 2 && character > 0x7F)
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
/* Korian UHC Support. */
case UHC: {
if (stat < 2 && character > 0x7F)
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
case EUC_JIS_2004:
/* 0x8f is JIS X 0212 + JIS X 0213(2) 3 byte */
/* 0x8e is JIS X 0201 2 byte */
/* 0xa0-0xff is JIS X 0213(1) 2 byte */
case EUC_JP:
/* 0x8f is JIS X 0212 3 byte */
/* 0x8e is JIS X 0201 2 byte */
/* 0xa0-0xff is JIS X 0208 2 byte */
{
if (stat < 3 && character == 0x8f) /* JIS X 0212 */
stat = 3;
else if (stat != 2
&& (character == 0x8e
|| character > 0xa0)) /* Half Katakana HighByte &
Kanji HighByte */
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
}
break;
/* EUC_CN, EUC_KR, JOHAB Support */
case EUC_CN:
case EUC_KR:
case JOHAB: {
if (stat < 2 && character > 0xa0)
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
case EUC_TW: {
if (stat < 4 && character == 0x8e)
stat = 4;
else if (stat == 4 && character > 0xa0)
stat = 3;
else if ((stat == 3 || stat < 2) && character > 0xa0)
stat = 2;
else if (stat == 2)
stat = 1;
else
stat = 0;
} break;
/*Chinese GB18030 support.Added by Bill Huang <bhuang@redhat.com>
* <bill_huanghb@ybb.ne.jp>*/
case GB18030: {
if (stat < 2 && character > 0x80)
stat = 2;
else if (stat == 2) {
if (character >= 0x30 && character <= 0x39)
stat = 3;
else
stat = 1;
} else if (stat == 3) {
if (character >= 0x30 && character <= 0x39)
stat = 1;
else
stat = 3;
} else
stat = 0;
} break;
default: {
stat = 0;
} break;
}
return stat;
}
/*
* This function is used to know the encoding corresponding to
* the current locale.
*/
const char *derive_locale_encoding(const char *dbencoding) {
UNUSED(dbencoding);
const char *wenc = NULL;
#ifdef WIN32
int acp;
#endif /* WIN32 */
if (wenc = getenv("ESCLIENTENCODING"),
NULL != wenc) /* environmnt variable */
return wenc;
#ifdef WIN32
acp = GetACP();
if (acp >= 1251 && acp <= 1258) {
if (stricmp(dbencoding, "SQL_ASCII") == 0)
return wenc;
}
switch (acp) {
case 932:
wenc = "SJIS";
break;
case 936:
wenc = "GBK";
break;
case 949:
wenc = "UHC";
break;
case 950:
wenc = "BIG5";
break;
case 1250:
wenc = "WIN1250";
break;
case 1251:
wenc = "WIN1251";
break;
case 1256:
wenc = "WIN1256";
break;
case 1252:
if (strnicmp(dbencoding, "LATIN", 5) == 0)
break;
wenc = "WIN1252";
break;
case 1258:
wenc = "WIN1258";
break;
case 1253:
wenc = "WIN1253";
break;
case 1254:
wenc = "WIN1254";
break;
case 1255:
wenc = "WIN1255";
break;
case 1257:
wenc = "WIN1257";
break;
}
#else
// TODO #34 - Investigate locale handling on Mac
#endif /* WIN32 */
return wenc;
}
void encoded_str_constr(encoded_str *encstr, int ccsc, const char *str) {
encstr->ccsc = ccsc;
encstr->encstr = (const UCHAR *)str;
encstr->pos = -1;
encstr->ccst = 0;
}
int encoded_nextchar(encoded_str *encstr) {
int chr;
if (encstr->pos >= 0 && !encstr->encstr[encstr->pos])
return 0;
chr = encstr->encstr[++encstr->pos];
encstr->ccst =
opensearch_CS_stat(encstr->ccst, (unsigned int)chr, encstr->ccsc);
return chr;
}
int encoded_byte_check(encoded_str *encstr, size_t abspos) {
int chr;
chr = encstr->encstr[encstr->pos = abspos];
encstr->ccst =
opensearch_CS_stat(encstr->ccst, (unsigned int)chr, encstr->ccsc);
return chr;
}
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