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/*-------------------------------------------------------------------------
*
* pg_wchar.h
* multibyte-character support
*
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/mb/pg_wchar.h,v 1.78.2.1 2009/01/29 19:23:58 tgl Exp $
*
* NOTES
* This is used both by the backend and by libpq, but should not be
* included by libpq client programs. In particular, a libpq client
* should not assume that the encoding IDs used by the version of libpq
* it's linked to match up with the IDs declared here.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_WCHAR_H
#define PG_WCHAR_H
#include <sys/types.h>
/*
* The pg_wchar type
*/
typedef unsigned int pg_wchar;
/*
* various definitions for EUC
*/
#define SS2 0x8e /* single shift 2 (JIS0201) */
#define SS3 0x8f /* single shift 3 (JIS0212) */
/*
* SJIS validation macros
*/
#define ISSJISHEAD(c) (((c) >= 0x81 && (c) <= 0x9f) || ((c) >= 0xe0 && (c) <= 0xfc))
#define ISSJISTAIL(c) (((c) >= 0x40 && (c) <= 0x7e) || ((c) >= 0x80 && (c) <= 0xfc))
/*
* Leading byte types or leading prefix byte for MULE internal code.
* See http://www.xemacs.org for more details. (there is a doc titled
* "XEmacs Internals Manual", "MULE Character Sets and Encodings"
* section.)
*/
/*
* Is a leading byte for "official" single byte encodings?
*/
#define IS_LC1(c) ((unsigned char)(c) >= 0x81 && (unsigned char)(c) <= 0x8d)
/*
* Is a prefix byte for "private" single byte encodings?
*/
#define IS_LCPRV1(c) ((unsigned char)(c) == 0x9a || (unsigned char)(c) == 0x9b)
/*
* Is a leading byte for "official" multibyte encodings?
*/
#define IS_LC2(c) ((unsigned char)(c) >= 0x90 && (unsigned char)(c) <= 0x99)
/*
* Is a prefix byte for "private" multibyte encodings?
*/
#define IS_LCPRV2(c) ((unsigned char)(c) == 0x9c || (unsigned char)(c) == 0x9d)
/*----------------------------------------------------
* leading characters
*----------------------------------------------------
*/
/*
* Official single byte encodings (0x81-0x8e)
*/
#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_TIS620 0x85 /* Thai (not supported yet) */
#define LC_ISO8859_7 0x86 /* Greek (not supported yet) */
#define LC_ISO8859_6 0x87 /* Arabic (not supported yet) */
#define LC_ISO8859_8 0x88 /* Hebrew (not supported yet) */
#define LC_JISX0201K 0x89 /* Japanese 1 byte kana */
#define LC_JISX0201R 0x8a /* Japanese 1 byte Roman */
/* Note that 0x8b seems to be unused as of Emacs 20.7.
* However, there might be a chance that 0x8b could be used
* in later version of Emacs.
*/
#define LC_KOI8_R 0x8b /* Cyrillic KOI8-R */
#define LC_KOI8_U 0x8b /* Cyrillic KOI8-U */
#define LC_ISO8859_5 0x8c /* ISO8859 Cyrillic */
#define LC_ISO8859_9 0x8d /* ISO8859 Latin 5 (not supported yet) */
/* #define FREE 0x8e free (unused) */
/*
* Unused
*/
#define CONTROL_1 0x8f /* control characters (unused) */
/*
* Official multibyte byte encodings (0x90-0x99)
* 0x9a-0x9d are free. 0x9e and 0x9f are reserved.
*/
#define LC_JISX0208_1978 0x90 /* Japanese Kanji, old JIS (not supported) */
/* #define FREE 0x90 free (unused) */
#define LC_GB2312_80 0x91 /* Chinese */
#define LC_JISX0208 0x92 /* Japanese Kanji (JIS X 0208) */
#define LC_KS5601 0x93 /* Korean */
#define LC_JISX0212 0x94 /* Japanese Kanji (JIS X 0212) */
#define LC_CNS11643_1 0x95 /* CNS 11643-1992 Plane 1 */
#define LC_CNS11643_2 0x96 /* CNS 11643-1992 Plane 2 */
/* #define FREE 0x97 free (unused) */
#define LC_BIG5_1 0x98 /* Plane 1 Chinese traditional (not supported) */
#define LC_BIG5_2 0x99 /* Plane 1 Chinese traditional (not supported) */
/*
* Private single byte encodings (0xa0-0xef)
*/
#define LC_SISHENG 0xa0/* Chinese SiSheng characters for
* PinYin/ZhuYin (not supported) */
#define LC_IPA 0xa1/* IPA (International Phonetic Association)
* (not supported) */
#define LC_VISCII_LOWER 0xa2/* Vietnamese VISCII1.1 lower-case (not
* supported) */
#define LC_VISCII_UPPER 0xa3/* Vietnamese VISCII1.1 upper-case (not
* supported) */
#define LC_ARABIC_DIGIT 0xa4 /* Arabic digit (not supported) */
#define LC_ARABIC_1_COLUMN 0xa5 /* Arabic 1-column (not supported) */
#define LC_ASCII_RIGHT_TO_LEFT 0xa6 /* ASCII (left half of ISO8859-1) with
* right-to-left direction (not
* supported) */
#define LC_LAO 0xa7/* Lao characters (ISO10646 0E80..0EDF) (not
* supported) */
#define LC_ARABIC_2_COLUMN 0xa8 /* Arabic 1-column (not supported) */
/*
* Private multibyte encodings (0xf0-0xff)
*/
#define LC_INDIAN_1_COLUMN 0xf0/* Indian charset for 1-column width glypps
* (not supported) */
#define LC_TIBETAN_1_COLUMN 0xf1 /* Tibetan 1 column glyph (not supported) */
#define LC_ETHIOPIC 0xf5 /* Ethiopic characters (not supported) */
#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 */
#define LC_INDIAN_2_COLUMN 0xfb/* Indian charset for 2-column width glypps
* (not supported) */
#define LC_TIBETAN 0xfc /* Tibetan (not supported) */
/* #define FREE 0xfd free (unused) */
/* #define FREE 0xfe free (unused) */
/* #define FREE 0xff free (unused) */
/*
* PostgreSQL encoding identifiers
*
* WARNING: the order of this enum must be same as order of entries
* in the pg_enc2name_tbl[] array (in mb/encnames.c), and
* in the pg_wchar_table[] array (in mb/wchar.c)!
*
* If you add some encoding don't forget to check
* PG_ENCODING_BE_LAST macro.
*
* PG_SQL_ASCII is default encoding and must be = 0.
*
* XXX We must avoid renumbering any backend encoding until libpq's major
* version number is increased beyond 5; it turns out that the backend
* encoding IDs are effectively part of libpq's ABI as far as 8.2 initdb and
* psql are concerned.
*/
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_EUC_JIS_2004, /* EUC-JIS-2004 */
PG_UTF8, /* Unicode UTF8 */
PG_MULE_INTERNAL, /* Mule internal code */
PG_LATIN1, /* ISO-8859-1 Latin 1 */
PG_LATIN2, /* ISO-8859-2 Latin 2 */
PG_LATIN3, /* ISO-8859-3 Latin 3 */
PG_LATIN4, /* ISO-8859-4 Latin 4 */
PG_LATIN5, /* ISO-8859-9 Latin 5 */
PG_LATIN6, /* ISO-8859-10 Latin6 */
PG_LATIN7, /* ISO-8859-13 Latin7 */
PG_LATIN8, /* ISO-8859-14 Latin8 */
PG_LATIN9, /* ISO-8859-15 Latin9 */
PG_LATIN10, /* ISO-8859-16 Latin10 */
PG_WIN1256, /* windows-1256 */
PG_WIN1258, /* Windows-1258 */
PG_WIN866, /* (MS-DOS CP866) */
PG_WIN874, /* windows-874 */
PG_KOI8R, /* KOI8-R */
PG_WIN1251, /* windows-1251 */
PG_WIN1252, /* windows-1252 */
PG_ISO_8859_5, /* ISO-8859-5 */
PG_ISO_8859_6, /* ISO-8859-6 */
PG_ISO_8859_7, /* ISO-8859-7 */
PG_ISO_8859_8, /* ISO-8859-8 */
PG_WIN1250, /* windows-1250 */
PG_WIN1253, /* windows-1253 */
PG_WIN1254, /* windows-1254 */
PG_WIN1255, /* windows-1255 */
PG_WIN1257, /* windows-1257 */
/* PG_ENCODING_BE_LAST points to the above entry */
/* followings are for client encoding only */
PG_SJIS, /* Shift JIS (Winindows-932) */
PG_BIG5, /* Big5 (Windows-950) */
PG_GBK, /* GBK (Windows-936) */
PG_UHC, /* UHC (Windows-949) */
PG_GB18030, /* GB18030 */
PG_JOHAB, /* EUC for Korean JOHAB */
PG_SHIFT_JIS_2004, /* Shift-JIS-2004 */
_PG_LAST_ENCODING_ /* mark only */
} pg_enc;
#define PG_ENCODING_BE_LAST PG_WIN1257
/*
* 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_CLIENT_ONLY(_enc) \
((_enc) > PG_ENCODING_BE_LAST && (_enc) < _PG_LAST_ENCODING_)
#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[];
/*
* pg_wchar stuff
*/
typedef int (*mb2wchar_with_len_converter) (const unsigned char *from,
pg_wchar *to,
int len);
typedef int (*mblen_converter) (const unsigned char *mbstr);
typedef int (*mbdisplaylen_converter) (const unsigned char *mbstr);
typedef int (*mbverifier) (const unsigned char *mbstr, int len);
typedef struct
{
mb2wchar_with_len_converter mb2wchar_with_len; /* convert a multibyte
* string to a wchar */
mblen_converter mblen; /* get byte length of a char */
mbdisplaylen_converter dsplen; /* get display width of a char */
mbverifier mbverify; /* verify multibyte sequence */
int maxmblen; /* max bytes for a char in this encoding */
} pg_wchar_tbl;
extern pg_wchar_tbl pg_wchar_table[];
/*
* UTF-8 to local code conversion map
* Note that we limit the max length of UTF-8 to 4 bytes,
* which is UCS-4 00010000-001FFFFF range.
*/
typedef struct
{
uint32 utf; /* UTF-8 */
uint32 code; /* local code */
} pg_utf_to_local;
/*
* local code to UTF-8 conversion map
*/
typedef struct
{
uint32 code; /* local code */
uint32 utf; /* UTF-8 */
} pg_local_to_utf;
/*
* UTF-8 to local code conversion map(combined characters)
*/
typedef struct
{
uint32 utf1; /* UTF-8 code 1 */
uint32 utf2; /* UTF-8 code 2 */
uint32 code; /* local code */
} pg_utf_to_local_combined;
/*
* local code to UTF-8 conversion map(combined characters)
*/
typedef struct
{
uint32 code; /* local code */
uint32 utf1; /* UTF-8 code 1 */
uint32 utf2; /* UTF-8 code 2 */
} pg_local_to_utf_combined;
/*
* Support macro for encoding conversion functions to validate their
* arguments. (This could be made more compact if we included fmgr.h
* here, but we don't want to do that because this header file is also
* used by frontends.)
*/
#define CHECK_ENCODING_CONVERSION_ARGS(srcencoding,destencoding) \
check_encoding_conversion_args(PG_GETARG_INT32(0), \
PG_GETARG_INT32(1), \
PG_GETARG_INT32(4), \
(srcencoding), \
(destencoding))
/*
* These functions are considered part of libpq's exported API and
* are also declared in libpq-fe.h.
*/
extern int pg_char_to_encoding(const char *name);
extern const char *pg_encoding_to_char(int encoding);
extern int pg_valid_server_encoding_id(int encoding);
/*
* Remaining functions are not considered part of libpq's API, though many
* of them do exist inside libpq.
*/
extern pg_encname *pg_char_to_encname_struct(const char *name);
extern int pg_mb2wchar(const char *from, pg_wchar *to);
extern int pg_mb2wchar_with_len(const char *from, pg_wchar *to, int len);
extern int pg_encoding_mb2wchar_with_len(int encoding,
const char *from, pg_wchar *to, int len);
extern int pg_char_and_wchar_strcmp(const char *s1, const pg_wchar *s2);
extern int pg_wchar_strncmp(const pg_wchar *s1, const pg_wchar *s2, size_t n);
extern int pg_char_and_wchar_strncmp(const char *s1, const pg_wchar *s2, size_t n);
extern size_t pg_wchar_strlen(const pg_wchar *wstr);
extern int pg_mblen(const char *mbstr);
extern int pg_dsplen(const char *mbstr);
extern int pg_encoding_mblen(int encoding, const char *mbstr);
extern int pg_encoding_dsplen(int encoding, const char *mbstr);
extern int pg_encoding_verifymb(int encoding, const char *mbstr, int len);
extern int pg_mule_mblen(const unsigned char *mbstr);
extern int pg_mic_mblen(const unsigned char *mbstr);
extern int pg_mbstrlen(const char *mbstr);
extern int pg_mbstrlen_with_len(const char *mbstr, int len);
extern int pg_mbcliplen(const char *mbstr, int len, int limit);
extern int pg_mbcharcliplen(const char *mbstr, int len, int imit);
extern int pg_encoding_max_length(int encoding);
extern int pg_database_encoding_max_length(void);
extern void SetDefaultClientEncoding(void);
extern int SetClientEncoding(int encoding, bool doit);
extern void InitializeClientEncoding(void);
extern int pg_get_client_encoding(void);
extern const char *pg_get_client_encoding_name(void);
extern void SetDatabaseEncoding(int encoding);
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 unsigned char *pg_do_encoding_conversion(unsigned char *src, int len,
int src_encoding,
int dest_encoding);
extern char *pg_client_to_server(const char *s, int len);
extern char *pg_server_to_client(const char *s, int len);
extern unsigned short BIG5toCNS(unsigned short big5, unsigned char *lc);
extern unsigned short CNStoBIG5(unsigned short cns, unsigned char lc);
extern void LocalToUtf(const unsigned char *iso, unsigned char *utf,
const pg_local_to_utf *map, const pg_local_to_utf_combined *cmap,
int size1, int size2, int encoding, int len);
extern void UtfToLocal(const unsigned char *utf, unsigned char *iso,
const pg_utf_to_local *map, const pg_utf_to_local_combined *cmap,
int size1, int size2, int encoding, int len);
extern bool pg_verifymbstr(const char *mbstr, int len, bool noError);
extern bool pg_verify_mbstr(int encoding, const char *mbstr, int len,
bool noError);
extern int pg_verify_mbstr_len(int encoding, const char *mbstr, int len,
bool noError);
extern void check_encoding_conversion_args(int src_encoding,
int dest_encoding,
int len,
int expected_src_encoding,
int expected_dest_encoding);
extern void report_invalid_encoding(int encoding, const char *mbstr, int len);
extern void report_untranslatable_char(int src_encoding, int dest_encoding,
const char *mbstr, int len);
extern void pg_ascii2mic(const unsigned char *l, unsigned char *p, int len);
extern void pg_mic2ascii(const unsigned char *mic, unsigned char *p, int len);
extern void latin2mic(const unsigned char *l, unsigned char *p, int len,
int lc, int encoding);
extern void mic2latin(const unsigned char *mic, unsigned char *p, int len,
int lc, int encoding);
extern void latin2mic_with_table(const unsigned char *l, unsigned char *p,
int len, int lc, int encoding,
const unsigned char *tab);
extern void mic2latin_with_table(const unsigned char *mic, unsigned char *p,
int len, int lc, int encoding,
const unsigned char *tab);
extern bool pg_utf8_islegal(const unsigned char *source, int length);
#endif /* PG_WCHAR_H */