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227767112c
postgresql/src/include/mb/pg_wchar.h
Tatsuo Ishii 227767112c Commit Karel's patch. 
-------------------------------------------------------------------
Subject: Re: [PATCHES] encoding names
From: Karel Zak <zakkr@zf.jcu.cz>
To: Peter Eisentraut <peter_e@gmx.net>
Cc: pgsql-patches <pgsql-patches@postgresql.org>
Date: Fri, 31 Aug 2001 17:24:38 +0200

On Thu, Aug 30, 2001 at 01:30:40AM +0200, Peter Eisentraut wrote:
> > 		- convert encoding 'name' to 'id'
>
> I thought we decided not to add functions returning "new" names until we
> know exactly what the new names should be, and pending schema

 Ok, the patch not to add functions.

> better
>
>     ...(): encoding name too long

 Fixed.

 I found new bug in command/variable.c in parse_client_encoding(), nobody
probably never see this error:

if (pg_set_client_encoding(encoding))
{
	elog(ERROR, "Conversion between %s and %s is not supported",
                     value, GetDatabaseEncodingName());
}

because pg_set_client_encoding() returns -1 for error and 0 as true.
It's fixed too.

 IMHO it can be apply.

		Karel
PS:

    * following files are renamed:

src/utils/mb/Unicode/KOI8_to_utf8.map  -->
        src/utils/mb/Unicode/koi8r_to_utf8.map

src/utils/mb/Unicode/WIN_to_utf8.map  -->
        src/utils/mb/Unicode/win1251_to_utf8.map

src/utils/mb/Unicode/utf8_to_KOI8.map -->
        src/utils/mb/Unicode/utf8_to_koi8r.map

src/utils/mb/Unicode/utf8_to_WIN.map -->
        src/utils/mb/Unicode/utf8_to_win1251.map

   * new file:

src/utils/mb/encname.c

   * removed file:

src/utils/mb/common.c

--
 Karel Zak  <zakkr@zf.jcu.cz>
 http://home.zf.jcu.cz/~zakkr/

 C, PostgreSQL, PHP, WWW, http://docs.linux.cz, http://mape.jcu.cz
2001-09-06 04:57:30 +00:00

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/* $Id: pg_wchar.h,v 1.29 2001/09/06 04:57:29 ishii Exp $ */
#ifndef PG_WCHAR_H
#define PG_WCHAR_H
#include <sys/types.h>
#ifdef FRONTEND
#undef palloc
#define palloc malloc
#undef pfree
#define pfree free
#endif
/*
* The pg_wchar
*/
#ifdef MULTIBYTE
typedef unsigned int pg_wchar;
#else
#define pg_wchar char
#endif
/*
* various definitions for EUC
*/
#define SS2 0x8e /* single shift 2 (JIS0201) */
#define SS3 0x8f /* single shift 3 (JIS0212) */
/*
* various definitions for mule internal code
*/
#define IS_LC1(c) ((unsigned char)(c) >= 0x81 && (unsigned char)(c) <= 0x8f)
#define IS_LCPRV1(c) ((unsigned char)(c) == 0x9a || (unsigned char)(c) == 0x9b)
#define IS_LC2(c) ((unsigned char)(c) >= 0x90 && (unsigned char)(c) <= 0x99)
#define IS_LCPRV2(c) ((unsigned char)(c) == 0x9c || (unsigned char)(c) == 0x9d)
/*
* leading characters
*/
#define LC_ISO8859_1 0x81 /* ISO8859 Latin 1 */
#define LC_ISO8859_2 0x82 /* ISO8859 Latin 2 */
#define LC_ISO8859_3 0x83 /* ISO8859 Latin 3 */
#define LC_ISO8859_4 0x84 /* ISO8859 Latin 4 */
#define LC_ISO8859_5 0x8d /* ISO8859 Latin 5 */
#define LC_JISX0201K 0x89 /* Japanese 1 byte kana */
#define LC_JISX0201R 0x8a /* Japanese 1 byte Roman */
#define LC_KOI8_R 0x8c /* Cyrillic KOI8-R */
#define LC_KOI8_U 0x8c /* Cyrillic KOI8-U */
#define LC_GB2312_80 0x91 /* Chinese */
#define LC_JISX0208 0x92 /* Japanese Kanji */
#define LC_KS5601 0x93 /* Korean */
#define LC_JISX0212 0x94 /* Japanese Kanji (JISX0212) */
#define LC_CNS11643_1 0x95 /* CNS 11643-1992 Plane 1 */
#define LC_CNS11643_2 0x96 /* CNS 11643-1992 Plane 2 */
#define LC_CNS11643_3 0xf6 /* CNS 11643-1992 Plane 3 */
#define LC_CNS11643_4 0xf7 /* CNS 11643-1992 Plane 4 */
#define LC_CNS11643_5 0xf8 /* CNS 11643-1992 Plane 5 */
#define LC_CNS11643_6 0xf9 /* CNS 11643-1992 Plane 6 */
#define LC_CNS11643_7 0xfa /* CNS 11643-1992 Plane 7 */
/*
* Encoding numeral identificators
*
* WARNING: the order of this table must be same as order
* in the pg_enconv[] (mb/conv.c) and pg_enc2name[] (mb/names.c) array!
*
* If you add some encoding don'y forget check
* PG_ENCODING_[BE|FE]_LAST macros.
*
* The PG_SQL_ASCII is default encoding and must be = 0.
*/
typedef enum pg_enc
{
PG_SQL_ASCII = 0, /* SQL/ASCII */
PG_EUC_JP, /* EUC for Japanese */
PG_EUC_CN, /* EUC for Chinese */
PG_EUC_KR, /* EUC for Korean */
PG_EUC_TW, /* EUC for Taiwan */
PG_UTF8, /* Unicode UTF-8 */
PG_MULE_INTERNAL, /* Mule internal code */
PG_LATIN1, /* ISO-8859 Latin 1 */
PG_LATIN2, /* ISO-8859 Latin 2 */
PG_LATIN3, /* ISO-8859 Latin 3 */
PG_LATIN4, /* ISO-8859 Latin 4 */
PG_LATIN5, /* ISO-8859 Latin 5 */
PG_KOI8R, /* KOI8-R */
PG_WIN1251, /* windows-1251 (was: WIN) */
PG_ALT, /* (MS-DOS CP866) */
/* followings are for client encoding only */
PG_SJIS, /* Shift JIS */
PG_BIG5, /* Big5 */
PG_WIN1250, /* windows-1250 */
_PG_LAST_ENCODING_ /* mark only */
} pg_enc;
#define PG_ENCODING_BE_LAST PG_ALT
#define PG_ENCODING_FE_LAST PG_WIN1250
#ifdef MULTIBYTE
/*
* Please use these tests before access to pg_encconv_tbl[]
* or to other places...
*/
#define PG_VALID_BE_ENCODING(_enc) \
((_enc) >= 0 && (_enc) <= PG_ENCODING_BE_LAST)
#define PG_ENCODING_IS_CLIEN_ONLY(_enc) \
(((_enc) > PG_ENCODING_BE_LAST && (_enc) <= PG_ENCODING_FE_LAST)
#define PG_VALID_ENCODING(_enc) \
((_enc) >= 0 && (_enc) < _PG_LAST_ENCODING_)
/* On FE are possible all encodings
*/
#define PG_VALID_FE_ENCODING(_enc) PG_VALID_ENCODING(_enc)
/*
* Encoding names with all aliases
*/
typedef struct pg_encname
{
char *name;
pg_enc encoding;
} pg_encname;
extern pg_encname pg_encname_tbl[];
extern unsigned int pg_encname_tbl_sz;
/*
* Careful:
*
* if (PG_VALID_ENCODING(encoding))
* pg_enc2name_tbl[ encoding ];
*/
typedef struct pg_enc2name
{
char *name;
pg_enc encoding;
} pg_enc2name;
extern pg_enc2name pg_enc2name_tbl[];
extern pg_encname *pg_char_to_encname_struct(const char *name);
extern int pg_char_to_encoding(const char *s);
extern const char *pg_encoding_to_char(int encoding);
/*
* The backend encoding conversion routines
* Careful:
*
* if (PG_VALID_ENCODING(enc))
* pg_encconv_tbl[ enc ]->foo
*/
#ifndef FRONTEND
typedef struct pg_enconv
{
pg_enc encoding; /* encoding identificator */
void (*to_mic) (); /* client encoding to MIC */
void (*from_mic) (); /* MIC to client encoding */
void (*to_unicode) (); /* client encoding to UTF-8 */
void (*from_unicode) (); /* UTF-8 to client encoding */
} pg_enconv;
extern pg_enconv pg_enconv_tbl[];
extern pg_enconv *pg_get_enconv_by_encoding(int encoding);
#endif /* FRONTEND */
/*
* pg_wchar stuff
*/
typedef struct
{
int (*mb2wchar_with_len) (); /* convert a multi-byte
* string to a wchar */
int (*mblen) (); /* returns the length of a multi-byte word */
} pg_wchar_tbl;
extern pg_wchar_tbl pg_wchar_table[];
/*
* UTF-8 to local code conversion map
*/
typedef struct
{
unsigned int utf; /* UTF-8 */
unsigned int code; /* local code */
} pg_utf_to_local;
/*
* local code to UTF-8 conversion map
*/
typedef struct
{
unsigned int code; /* local code */
unsigned int utf; /* UTF-8 */
} pg_local_to_utf;
extern int pg_mb2wchar(const unsigned char *, pg_wchar *);
extern int pg_mb2wchar_with_len(const unsigned char *, pg_wchar *, int);
extern int pg_char_and_wchar_strcmp(const char *, const pg_wchar *);
extern int pg_wchar_strncmp(const pg_wchar *, const pg_wchar *, size_t);
extern int pg_char_and_wchar_strncmp(const char *, const pg_wchar *, size_t);
extern size_t pg_wchar_strlen(const pg_wchar *);
extern int pg_mblen(const unsigned char *);
extern int pg_encoding_mblen(int, const unsigned char *);
extern int pg_mule_mblen(const unsigned char *);
extern int pg_mic_mblen(const unsigned char *);
extern int pg_mbstrlen(const unsigned char *);
extern int pg_mbstrlen_with_len(const unsigned char *, int);
extern int pg_mbcliplen(const unsigned char *, int, int);
extern int pg_mbcharcliplen(const unsigned char *, int, int);
extern int pg_set_client_encoding(int);
extern int pg_get_client_encoding(void);
extern const char *pg_get_client_encoding_name(void);
extern void SetDatabaseEncoding(int);
extern int GetDatabaseEncoding(void);
extern const char *GetDatabaseEncodingName(void);
extern int pg_valid_client_encoding(const char *name);
extern int pg_valid_server_encoding(const char *name);
extern int pg_utf_mblen(const unsigned char *);
extern int pg_find_encoding_converters(int, int, void (**)(), void (**)());
extern unsigned char *pg_do_encoding_conversion(unsigned char *, int, void (*)(), void (*)());
extern unsigned char *pg_client_to_server(unsigned char *, int);
extern unsigned char *pg_server_to_client(unsigned char *, int);
extern unsigned short BIG5toCNS(unsigned short, unsigned char *);
extern unsigned short CNStoBIG5(unsigned short, unsigned char);
#endif /* MULTIBYTE */
#endif /* PG_WCHAR_H */
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