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pg_wchar.h
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/*------------------------------------------------------------------------- * * pg_wchar.h * multibyte-character support * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/mb/pg_wchar.h * * 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 /* * 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 LCPRV1_A 0x9a #define LCPRV1_B 0x9b #define IS_LCPRV1(c) ((unsigned char)(c) == LCPRV1_A || (unsigned char)(c) == LCPRV1_B) #define IS_LCPRV1_A_RANGE(c) \ ((unsigned char)(c) >= 0xa0 && (unsigned char)(c) <= 0xdf) #define IS_LCPRV1_B_RANGE(c) \ ((unsigned char)(c) >= 0xe0 && (unsigned char)(c) <= 0xef) /* * 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 LCPRV2_A 0x9c #define LCPRV2_B 0x9d #define IS_LCPRV2(c) ((unsigned char)(c) == LCPRV2_A || (unsigned char)(c) == LCPRV2_B) #define IS_LCPRV2_A_RANGE(c) \ ((unsigned char)(c) >= 0xf0 && (unsigned char)(c) <= 0xf4) #define IS_LCPRV2_B_RANGE(c) \ ((unsigned char)(c) >= 0xf5 && (unsigned char)(c) <= 0xfe) /*---------------------------------------------------- * 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_KOI8U, /* KOI8-U */ /* 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_KOI8U /* * 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; #ifdef WIN32 unsigned codepage; /* codepage for WIN32 */ #endif } pg_enc2name; extern pg_enc2name pg_enc2name_tbl[]; /* * Encoding names for gettext */ typedef struct pg_enc2gettext { pg_enc encoding; const char *name; } pg_enc2gettext; extern pg_enc2gettext pg_enc2gettext_tbl[]; /* * pg_wchar stuff */ typedef int (*mb2wchar_with_len_converter) (const unsigned char *from, pg_wchar *to, int len); typedef int (*wchar2mb_with_len_converter) (const pg_wchar *from, unsigned char *to, int len); typedef int (*mblen_converter) (const unsigned char *mbstr); typedef int (*mbdisplaylen_converter) (const unsigned char *mbstr); typedef bool (*mbcharacter_incrementer) (unsigned char *mbstr, int len); 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 */ wchar2mb_with_len_converter wchar2mb_with_len; /* convert a wchar * string to a multibyte */ 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_wchar2mb(const pg_wchar *from, char *to); extern int pg_wchar2mb_with_len(const pg_wchar *from, char *to, int len); extern int pg_encoding_wchar2mb_with_len(int encoding, const pg_wchar *from, char *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_encoding_mbcliplen(int encoding, 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 mbcharacter_incrementer pg_database_encoding_character_incrementer(void); extern int PrepareClientEncoding(int encoding); extern int SetClientEncoding(int encoding); 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 GetPlatformEncoding(void); extern void pg_bind_textdomain_codeset(const char *domainname); extern int pg_valid_client_encoding(const char *name); extern int pg_valid_server_encoding(const char *name); extern unsigned char *unicode_to_utf8(pg_wchar c, unsigned char *utf8string); extern pg_wchar utf8_to_unicode(const unsigned char *c); 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 char *pg_any_to_server(const char *s, int len, int encoding); extern char *pg_server_to_any(const char *s, int len, int encoding); 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); #ifdef WIN32 extern WCHAR *pgwin32_toUTF16(const char *str, int len, int *utf16len); #endif #endif /* PG_WCHAR_H */