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pg_wchar.h File Reference
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Data Structures

struct  pg_enc2name
 
struct  pg_wchar_tbl
 
struct  pg_mb_radix_tree
 
struct  pg_utf_to_local_combined
 
struct  pg_local_to_utf_combined
 

Macros

#define MAX_MULTIBYTE_CHAR_LEN   4
 
#define SS2   0x8e /* single shift 2 (JIS0201) */
 
#define SS3   0x8f /* single shift 3 (JIS0212) */
 
#define ISSJISHEAD(c)   (((c) >= 0x81 && (c) <= 0x9f) || ((c) >= 0xe0 && (c) <= 0xfc))
 
#define ISSJISTAIL(c)   (((c) >= 0x40 && (c) <= 0x7e) || ((c) >= 0x80 && (c) <= 0xfc))
 
#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 */
 
#define LC_KOI8_R   0x8b /* Cyrillic KOI8-R */
 
#define LC_ISO8859_5   0x8c /* ISO8859 Cyrillic */
 
#define LC_ISO8859_9   0x8d /* ISO8859 Latin 5 (not supported yet) */
 
#define LC_ISO8859_15   0x8e /* ISO8859 Latin 15 (not supported yet) */
 
#define IS_LC1(c)   ((unsigned char)(c) >= 0x81 && (unsigned char)(c) <= 0x8d)
 
#define LC_JISX0208_1978   0x90 /* Japanese Kanji, old JIS (not supported) */
 
#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 LC_JISX0213_1
 
#define LC_BIG5_1
 
#define LC_BIG5_2
 
#define IS_LC2(c)   ((unsigned char)(c) >= 0x90 && (unsigned char)(c) <= 0x99)
 
#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)
 
#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)
 
#define LC_SISHENG
 
#define LC_IPA
 
#define LC_VISCII_LOWER
 
#define LC_VISCII_UPPER
 
#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
 
#define LC_LAO
 
#define LC_ARABIC_2_COLUMN   0xa8 /* Arabic 1-column (not supported) */
 
#define LC_INDIAN_1_COLUMN
 
#define LC_TIBETAN_1_COLUMN
 
#define LC_UNICODE_SUBSET_2
 
#define LC_UNICODE_SUBSET_3
 
#define LC_UNICODE_SUBSET
 
#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
 
#define LC_TIBETAN   0xfc /* Tibetan (not supported) */
 
#define PG_ENCODING_BE_LAST   PG_KOI8U
 
#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_)
 
#define PG_VALID_FE_ENCODING(_enc)   PG_VALID_ENCODING(_enc)
 
#define MAX_CONVERSION_GROWTH   4
 
#define MAX_CONVERSION_INPUT_LENGTH   16
 
#define MAX_UNICODE_EQUIVALENT_STRING   16
 
#define CHECK_ENCODING_CONVERSION_ARGS(srcencoding, destencoding)
 
#define pg_char_to_encoding   pg_char_to_encoding_private
 
#define pg_encoding_to_char   pg_encoding_to_char_private
 
#define pg_valid_server_encoding   pg_valid_server_encoding_private
 
#define pg_valid_server_encoding_id   pg_valid_server_encoding_id_private
 
#define pg_utf_mblen   pg_utf_mblen_private
 

Typedefs

typedef unsigned int pg_wchar
 
typedef enum pg_enc pg_enc
 
typedef struct pg_enc2name pg_enc2name
 
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(* mbchar_verifier) (const unsigned char *mbstr, int len)
 
typedef int(* mbstr_verifier) (const unsigned char *mbstr, int len)
 
typedef uint32(* utf_local_conversion_func) (uint32 code)
 

Enumerations

enum  pg_enc {
  PG_SQL_ASCII = 0 , PG_EUC_JP , PG_EUC_CN , PG_EUC_KR ,
  PG_EUC_TW , PG_EUC_JIS_2004 , PG_UTF8 , PG_MULE_INTERNAL ,
  PG_LATIN1 , PG_LATIN2 , PG_LATIN3 , PG_LATIN4 ,
  PG_LATIN5 , PG_LATIN6 , PG_LATIN7 , PG_LATIN8 ,
  PG_LATIN9 , PG_LATIN10 , PG_WIN1256 , PG_WIN1258 ,
  PG_WIN866 , PG_WIN874 , PG_KOI8R , PG_WIN1251 ,
  PG_WIN1252 , PG_ISO_8859_5 , PG_ISO_8859_6 , PG_ISO_8859_7 ,
  PG_ISO_8859_8 , PG_WIN1250 , PG_WIN1253 , PG_WIN1254 ,
  PG_WIN1255 , PG_WIN1257 , PG_KOI8U , PG_SJIS ,
  PG_BIG5 , PG_GBK , PG_UHC , PG_GB18030 ,
  PG_JOHAB , PG_SHIFT_JIS_2004 , _PG_LAST_ENCODING_
}
 

Functions

static bool is_valid_unicode_codepoint (pg_wchar c)
 
static bool is_utf16_surrogate_first (pg_wchar c)
 
static bool is_utf16_surrogate_second (pg_wchar c)
 
static pg_wchar surrogate_pair_to_codepoint (pg_wchar first, pg_wchar second)
 
static pg_wchar utf8_to_unicode (const unsigned char *c)
 
static unsigned char * unicode_to_utf8 (pg_wchar c, unsigned char *utf8string)
 
static int unicode_utf8len (pg_wchar c)
 
int pg_char_to_encoding (const char *name)
 
const char * pg_encoding_to_char (int encoding)
 
int pg_valid_server_encoding_id (int encoding)
 
int pg_encoding_mblen (int encoding, const char *mbstr)
 
int pg_encoding_mblen_bounded (int encoding, const char *mbstr)
 
int pg_encoding_dsplen (int encoding, const char *mbstr)
 
int pg_encoding_verifymbchar (int encoding, const char *mbstr, int len)
 
int pg_encoding_verifymbstr (int encoding, const char *mbstr, int len)
 
int pg_encoding_max_length (int encoding)
 
int pg_valid_client_encoding (const char *name)
 
int pg_valid_server_encoding (const char *name)
 
bool is_encoding_supported_by_icu (int encoding)
 
const char * get_encoding_name_for_icu (int encoding)
 
bool pg_utf8_islegal (const unsigned char *source, int length)
 
int pg_utf_mblen (const unsigned char *s)
 
int pg_mule_mblen (const unsigned char *s)
 
int pg_mb2wchar (const char *from, pg_wchar *to)
 
int pg_mb2wchar_with_len (const char *from, pg_wchar *to, int len)
 
int pg_encoding_mb2wchar_with_len (int encoding, const char *from, pg_wchar *to, int len)
 
int pg_wchar2mb (const pg_wchar *from, char *to)
 
int pg_wchar2mb_with_len (const pg_wchar *from, char *to, int len)
 
int pg_encoding_wchar2mb_with_len (int encoding, const pg_wchar *from, char *to, int len)
 
int pg_char_and_wchar_strcmp (const char *s1, const pg_wchar *s2)
 
int pg_wchar_strncmp (const pg_wchar *s1, const pg_wchar *s2, size_t n)
 
int pg_char_and_wchar_strncmp (const char *s1, const pg_wchar *s2, size_t n)
 
size_t pg_wchar_strlen (const pg_wchar *str)
 
int pg_mblen (const char *mbstr)
 
int pg_dsplen (const char *mbstr)
 
int pg_mbstrlen (const char *mbstr)
 
int pg_mbstrlen_with_len (const char *mbstr, int limit)
 
int pg_mbcliplen (const char *mbstr, int len, int limit)
 
int pg_encoding_mbcliplen (int encoding, const char *mbstr, int len, int limit)
 
int pg_mbcharcliplen (const char *mbstr, int len, int limit)
 
int pg_database_encoding_max_length (void)
 
mbcharacter_incrementer pg_database_encoding_character_incrementer (void)
 
int PrepareClientEncoding (int encoding)
 
int SetClientEncoding (int encoding)
 
void InitializeClientEncoding (void)
 
int pg_get_client_encoding (void)
 
const char * pg_get_client_encoding_name (void)
 
void SetDatabaseEncoding (int encoding)
 
int GetDatabaseEncoding (void)
 
const char * GetDatabaseEncodingName (void)
 
void SetMessageEncoding (int encoding)
 
int GetMessageEncoding (void)
 
unsigned char * pg_do_encoding_conversion (unsigned char *src, int len, int src_encoding, int dest_encoding)
 
int pg_do_encoding_conversion_buf (Oid proc, int src_encoding, int dest_encoding, unsigned char *src, int srclen, unsigned char *dest, int destlen, bool noError)
 
char * pg_client_to_server (const char *s, int len)
 
char * pg_server_to_client (const char *s, int len)
 
char * pg_any_to_server (const char *s, int len, int encoding)
 
char * pg_server_to_any (const char *s, int len, int encoding)
 
void pg_unicode_to_server (pg_wchar c, unsigned char *s)
 
bool pg_unicode_to_server_noerror (pg_wchar c, unsigned char *s)
 
unsigned short BIG5toCNS (unsigned short big5, unsigned char *lc)
 
unsigned short CNStoBIG5 (unsigned short cns, unsigned char lc)
 
int UtfToLocal (const unsigned char *utf, int len, unsigned char *iso, const pg_mb_radix_tree *map, const pg_utf_to_local_combined *cmap, int cmapsize, utf_local_conversion_func conv_func, int encoding, bool noError)
 
int LocalToUtf (const unsigned char *iso, int len, unsigned char *utf, const pg_mb_radix_tree *map, const pg_local_to_utf_combined *cmap, int cmapsize, utf_local_conversion_func conv_func, int encoding, bool noError)
 
bool pg_verifymbstr (const char *mbstr, int len, bool noError)
 
bool pg_verify_mbstr (int encoding, const char *mbstr, int len, bool noError)
 
int pg_verify_mbstr_len (int encoding, const char *mbstr, int len, bool noError)
 
void check_encoding_conversion_args (int src_encoding, int dest_encoding, int len, int expected_src_encoding, int expected_dest_encoding)
 
void report_invalid_encoding (int encoding, const char *mbstr, int len) pg_attribute_noreturn()
 
void report_untranslatable_char (int src_encoding, int dest_encoding, const char *mbstr, int len) pg_attribute_noreturn()
 
int local2local (const unsigned char *l, unsigned char *p, int len, int src_encoding, int dest_encoding, const unsigned char *tab, bool noError)
 
int latin2mic (const unsigned char *l, unsigned char *p, int len, int lc, int encoding, bool noError)
 
int mic2latin (const unsigned char *mic, unsigned char *p, int len, int lc, int encoding, bool noError)
 
int latin2mic_with_table (const unsigned char *l, unsigned char *p, int len, int lc, int encoding, const unsigned char *tab, bool noError)
 
int mic2latin_with_table (const unsigned char *mic, unsigned char *p, int len, int lc, int encoding, const unsigned char *tab, bool noError)
 

Variables

PGDLLIMPORT const pg_enc2name pg_enc2name_tbl []
 
PGDLLIMPORT const char * pg_enc2gettext_tbl []
 
PGDLLIMPORT const pg_wchar_tbl pg_wchar_table []
 

Macro Definition Documentation

◆ CHECK_ENCODING_CONVERSION_ARGS

#define CHECK_ENCODING_CONVERSION_ARGS (   srcencoding,
  destencoding 
)
Value:
(srcencoding), \
(destencoding))
#define PG_GETARG_INT32(n)
Definition: fmgr.h:269
void check_encoding_conversion_args(int src_encoding, int dest_encoding, int len, int expected_src_encoding, int expected_dest_encoding)
Definition: mbutils.c:1669

Definition at line 507 of file pg_wchar.h.

◆ IS_LC1

#define IS_LC1 (   c)    ((unsigned char)(c) >= 0x81 && (unsigned char)(c) <= 0x8d)

Definition at line 126 of file pg_wchar.h.

◆ IS_LC2

#define IS_LC2 (   c)    ((unsigned char)(c) >= 0x90 && (unsigned char)(c) <= 0x99)

Definition at line 144 of file pg_wchar.h.

◆ IS_LCPRV1

#define IS_LCPRV1 (   c)    ((unsigned char)(c) == LCPRV1_A || (unsigned char)(c) == LCPRV1_B)

Definition at line 152 of file pg_wchar.h.

◆ IS_LCPRV1_A_RANGE

#define IS_LCPRV1_A_RANGE (   c)     ((unsigned char)(c) >= 0xa0 && (unsigned char)(c) <= 0xdf)

Definition at line 153 of file pg_wchar.h.

◆ IS_LCPRV1_B_RANGE

#define IS_LCPRV1_B_RANGE (   c)     ((unsigned char)(c) >= 0xe0 && (unsigned char)(c) <= 0xef)

Definition at line 155 of file pg_wchar.h.

◆ IS_LCPRV2

#define IS_LCPRV2 (   c)    ((unsigned char)(c) == LCPRV2_A || (unsigned char)(c) == LCPRV2_B)

Definition at line 164 of file pg_wchar.h.

◆ IS_LCPRV2_A_RANGE

#define IS_LCPRV2_A_RANGE (   c)     ((unsigned char)(c) >= 0xf0 && (unsigned char)(c) <= 0xf4)

Definition at line 165 of file pg_wchar.h.

◆ IS_LCPRV2_B_RANGE

#define IS_LCPRV2_B_RANGE (   c)     ((unsigned char)(c) >= 0xf5 && (unsigned char)(c) <= 0xfe)

Definition at line 167 of file pg_wchar.h.

◆ ISSJISHEAD

#define ISSJISHEAD (   c)    (((c) >= 0x81 && (c) <= 0x9f) || ((c) >= 0xe0 && (c) <= 0xfc))

Definition at line 44 of file pg_wchar.h.

◆ ISSJISTAIL

#define ISSJISTAIL (   c)    (((c) >= 0x40 && (c) <= 0x7e) || ((c) >= 0x80 && (c) <= 0xfc))

Definition at line 45 of file pg_wchar.h.

◆ LC_ARABIC_1_COLUMN

#define LC_ARABIC_1_COLUMN   0xa5 /* Arabic 1-column (not supported) */

Definition at line 178 of file pg_wchar.h.

◆ LC_ARABIC_2_COLUMN

#define LC_ARABIC_2_COLUMN   0xa8 /* Arabic 1-column (not supported) */

Definition at line 181 of file pg_wchar.h.

◆ LC_ARABIC_DIGIT

#define LC_ARABIC_DIGIT   0xa4 /* Arabic digit (not supported) */

Definition at line 177 of file pg_wchar.h.

◆ LC_ASCII_RIGHT_TO_LEFT

#define LC_ASCII_RIGHT_TO_LEFT
Value:
0xa6 /* ASCII (left half of ISO8859-1) with
* right-to-left direction (not
* supported) */

Definition at line 179 of file pg_wchar.h.

◆ LC_BIG5_1

#define LC_BIG5_1
Value:
0x98 /* Plane 1 Chinese traditional (not
* supported) */

Definition at line 140 of file pg_wchar.h.

◆ LC_BIG5_2

#define LC_BIG5_2
Value:
0x99 /* Plane 1 Chinese traditional (not
* supported) */

Definition at line 141 of file pg_wchar.h.

◆ LC_CNS11643_1

#define LC_CNS11643_1   0x95 /* CNS 11643-1992 Plane 1 */

Definition at line 137 of file pg_wchar.h.

◆ LC_CNS11643_2

#define LC_CNS11643_2   0x96 /* CNS 11643-1992 Plane 2 */

Definition at line 138 of file pg_wchar.h.

◆ LC_CNS11643_3

#define LC_CNS11643_3   0xf6 /* CNS 11643-1992 Plane 3 */

Definition at line 192 of file pg_wchar.h.

◆ LC_CNS11643_4

#define LC_CNS11643_4   0xf7 /* CNS 11643-1992 Plane 4 */

Definition at line 193 of file pg_wchar.h.

◆ LC_CNS11643_5

#define LC_CNS11643_5   0xf8 /* CNS 11643-1992 Plane 5 */

Definition at line 194 of file pg_wchar.h.

◆ LC_CNS11643_6

#define LC_CNS11643_6   0xf9 /* CNS 11643-1992 Plane 6 */

Definition at line 195 of file pg_wchar.h.

◆ LC_CNS11643_7

#define LC_CNS11643_7   0xfa /* CNS 11643-1992 Plane 7 */

Definition at line 196 of file pg_wchar.h.

◆ LC_ETHIOPIC

#define LC_ETHIOPIC   0xf5 /* Ethiopic characters (not supported) */

Definition at line 191 of file pg_wchar.h.

◆ LC_GB2312_80

#define LC_GB2312_80   0x91 /* Chinese */

Definition at line 133 of file pg_wchar.h.

◆ LC_INDIAN_1_COLUMN

#define LC_INDIAN_1_COLUMN
Value:
0xf0 /* Indian charset for 1-column width
* glyphs (not supported) */

Definition at line 186 of file pg_wchar.h.

◆ LC_INDIAN_2_COLUMN

#define LC_INDIAN_2_COLUMN
Value:
0xfb /* Indian charset for 2-column width
* glyphs (not supported) */

Definition at line 197 of file pg_wchar.h.

◆ LC_IPA

#define LC_IPA
Value:
0xa1 /* IPA (International Phonetic
* Association) (not supported) */

Definition at line 174 of file pg_wchar.h.

◆ LC_ISO8859_1

#define LC_ISO8859_1   0x81 /* ISO8859 Latin 1 */

Definition at line 105 of file pg_wchar.h.

◆ LC_ISO8859_15

#define LC_ISO8859_15   0x8e /* ISO8859 Latin 15 (not supported yet) */

Definition at line 122 of file pg_wchar.h.

◆ LC_ISO8859_2

#define LC_ISO8859_2   0x82 /* ISO8859 Latin 2 */

Definition at line 106 of file pg_wchar.h.

◆ LC_ISO8859_3

#define LC_ISO8859_3   0x83 /* ISO8859 Latin 3 */

Definition at line 107 of file pg_wchar.h.

◆ LC_ISO8859_4

#define LC_ISO8859_4   0x84 /* ISO8859 Latin 4 */

Definition at line 108 of file pg_wchar.h.

◆ LC_ISO8859_5

#define LC_ISO8859_5   0x8c /* ISO8859 Cyrillic */

Definition at line 120 of file pg_wchar.h.

◆ LC_ISO8859_6

#define LC_ISO8859_6   0x87 /* Arabic (not supported yet) */

Definition at line 111 of file pg_wchar.h.

◆ LC_ISO8859_7

#define LC_ISO8859_7   0x86 /* Greek (not supported yet) */

Definition at line 110 of file pg_wchar.h.

◆ LC_ISO8859_8

#define LC_ISO8859_8   0x88 /* Hebrew (not supported yet) */

Definition at line 112 of file pg_wchar.h.

◆ LC_ISO8859_9

#define LC_ISO8859_9   0x8d /* ISO8859 Latin 5 (not supported yet) */

Definition at line 121 of file pg_wchar.h.

◆ LC_JISX0201K

#define LC_JISX0201K   0x89 /* Japanese 1 byte kana */

Definition at line 113 of file pg_wchar.h.

◆ LC_JISX0201R

#define LC_JISX0201R   0x8a /* Japanese 1 byte Roman */

Definition at line 114 of file pg_wchar.h.

◆ LC_JISX0208

#define LC_JISX0208   0x92 /* Japanese Kanji (JIS X 0208) */

Definition at line 134 of file pg_wchar.h.

◆ LC_JISX0208_1978

#define LC_JISX0208_1978   0x90 /* Japanese Kanji, old JIS (not supported) */

Definition at line 132 of file pg_wchar.h.

◆ LC_JISX0212

#define LC_JISX0212   0x94 /* Japanese Kanji (JIS X 0212) */

Definition at line 136 of file pg_wchar.h.

◆ LC_JISX0213_1

#define LC_JISX0213_1
Value:
0x97 /* Japanese Kanji (JIS X 0213 Plane 1)
* (not supported) */

Definition at line 139 of file pg_wchar.h.

◆ LC_KOI8_R

#define LC_KOI8_R   0x8b /* Cyrillic KOI8-R */

Definition at line 119 of file pg_wchar.h.

◆ LC_KS5601

#define LC_KS5601   0x93 /* Korean */

Definition at line 135 of file pg_wchar.h.

◆ LC_LAO

#define LC_LAO
Value:
0xa7 /* Lao characters (ISO10646 0E80..0EDF)
* (not supported) */

Definition at line 180 of file pg_wchar.h.

◆ LC_SISHENG

#define LC_SISHENG
Value:
0xa0 /* Chinese SiSheng characters for
* PinYin/ZhuYin (not supported) */

Definition at line 173 of file pg_wchar.h.

◆ LC_TIBETAN

#define LC_TIBETAN   0xfc /* Tibetan (not supported) */

Definition at line 198 of file pg_wchar.h.

◆ LC_TIBETAN_1_COLUMN

#define LC_TIBETAN_1_COLUMN
Value:
0xf1 /* Tibetan 1-column width glyphs (not
* supported) */

Definition at line 187 of file pg_wchar.h.

◆ LC_TIS620

#define LC_TIS620   0x85 /* Thai (not supported yet) */

Definition at line 109 of file pg_wchar.h.

◆ LC_UNICODE_SUBSET

#define LC_UNICODE_SUBSET
Value:
0xf4 /* Unicode characters of the range
* U+0100..U+24FF. (not supported) */

Definition at line 190 of file pg_wchar.h.

◆ LC_UNICODE_SUBSET_2

#define LC_UNICODE_SUBSET_2
Value:
0xf2 /* Unicode characters of the range
* U+2500..U+33FF. (not supported) */

Definition at line 188 of file pg_wchar.h.

◆ LC_UNICODE_SUBSET_3

#define LC_UNICODE_SUBSET_3
Value:
0xf3 /* Unicode characters of the range
* U+E000..U+FFFF. (not supported) */

Definition at line 189 of file pg_wchar.h.

◆ LC_VISCII_LOWER

#define LC_VISCII_LOWER
Value:
0xa2 /* Vietnamese VISCII1.1 lower-case (not
* supported) */

Definition at line 175 of file pg_wchar.h.

◆ LC_VISCII_UPPER

#define LC_VISCII_UPPER
Value:
0xa3 /* Vietnamese VISCII1.1 upper-case (not
* supported) */

Definition at line 176 of file pg_wchar.h.

◆ LCPRV1_A

#define LCPRV1_A   0x9a

Definition at line 150 of file pg_wchar.h.

◆ LCPRV1_B

#define LCPRV1_B   0x9b

Definition at line 151 of file pg_wchar.h.

◆ LCPRV2_A

#define LCPRV2_A   0x9c

Definition at line 162 of file pg_wchar.h.

◆ LCPRV2_B

#define LCPRV2_B   0x9d

Definition at line 163 of file pg_wchar.h.

◆ MAX_CONVERSION_GROWTH

#define MAX_CONVERSION_GROWTH   4

Definition at line 302 of file pg_wchar.h.

◆ MAX_CONVERSION_INPUT_LENGTH

#define MAX_CONVERSION_INPUT_LENGTH   16

Definition at line 320 of file pg_wchar.h.

◆ MAX_MULTIBYTE_CHAR_LEN

#define MAX_MULTIBYTE_CHAR_LEN   4

Definition at line 33 of file pg_wchar.h.

◆ MAX_UNICODE_EQUIVALENT_STRING

#define MAX_UNICODE_EQUIVALENT_STRING   16

Definition at line 329 of file pg_wchar.h.

◆ pg_char_to_encoding

#define pg_char_to_encoding   pg_char_to_encoding_private

Definition at line 629 of file pg_wchar.h.

◆ PG_ENCODING_BE_LAST

#define PG_ENCODING_BE_LAST   PG_KOI8U

Definition at line 275 of file pg_wchar.h.

◆ PG_ENCODING_IS_CLIENT_ONLY

#define PG_ENCODING_IS_CLIENT_ONLY (   _enc)     ((_enc) > PG_ENCODING_BE_LAST && (_enc) < _PG_LAST_ENCODING_)

Definition at line 284 of file pg_wchar.h.

◆ pg_encoding_to_char

#define pg_encoding_to_char   pg_encoding_to_char_private

Definition at line 630 of file pg_wchar.h.

◆ pg_utf_mblen

#define pg_utf_mblen   pg_utf_mblen_private

Definition at line 633 of file pg_wchar.h.

◆ PG_VALID_BE_ENCODING

#define PG_VALID_BE_ENCODING (   _enc)     ((_enc) >= 0 && (_enc) <= PG_ENCODING_BE_LAST)

Definition at line 281 of file pg_wchar.h.

◆ PG_VALID_ENCODING

#define PG_VALID_ENCODING (   _enc)     ((_enc) >= 0 && (_enc) < _PG_LAST_ENCODING_)

Definition at line 287 of file pg_wchar.h.

◆ PG_VALID_FE_ENCODING

#define PG_VALID_FE_ENCODING (   _enc)    PG_VALID_ENCODING(_enc)

Definition at line 291 of file pg_wchar.h.

◆ pg_valid_server_encoding

#define pg_valid_server_encoding   pg_valid_server_encoding_private

Definition at line 631 of file pg_wchar.h.

◆ pg_valid_server_encoding_id

#define pg_valid_server_encoding_id   pg_valid_server_encoding_id_private

Definition at line 632 of file pg_wchar.h.

◆ SS2

#define SS2   0x8e /* single shift 2 (JIS0201) */

Definition at line 38 of file pg_wchar.h.

◆ SS3

#define SS3   0x8f /* single shift 3 (JIS0212) */

Definition at line 39 of file pg_wchar.h.

Typedef Documentation

◆ mb2wchar_with_len_converter

typedef int(* mb2wchar_with_len_converter) (const unsigned char *from, pg_wchar *to, int len)

Definition at line 358 of file pg_wchar.h.

◆ mbchar_verifier

typedef int(* mbchar_verifier) (const unsigned char *mbstr, int len)

Definition at line 372 of file pg_wchar.h.

◆ mbcharacter_incrementer

typedef bool(* mbcharacter_incrementer) (unsigned char *mbstr, int len)

Definition at line 370 of file pg_wchar.h.

◆ mbdisplaylen_converter

typedef int(* mbdisplaylen_converter) (const unsigned char *mbstr)

Definition at line 368 of file pg_wchar.h.

◆ mblen_converter

typedef int(* mblen_converter) (const unsigned char *mbstr)

Definition at line 366 of file pg_wchar.h.

◆ mbstr_verifier

typedef int(* mbstr_verifier) (const unsigned char *mbstr, int len)

Definition at line 374 of file pg_wchar.h.

◆ pg_enc

typedef enum pg_enc pg_enc

◆ pg_enc2name

typedef struct pg_enc2name pg_enc2name

◆ pg_wchar

typedef unsigned int pg_wchar

Definition at line 28 of file pg_wchar.h.

◆ utf_local_conversion_func

typedef uint32(* utf_local_conversion_func) (uint32 code)

Definition at line 499 of file pg_wchar.h.

◆ wchar2mb_with_len_converter

typedef int(* wchar2mb_with_len_converter) (const pg_wchar *from, unsigned char *to, int len)

Definition at line 362 of file pg_wchar.h.

Enumeration Type Documentation

◆ pg_enc

enum pg_enc
Enumerator
PG_SQL_ASCII 
PG_EUC_JP 
PG_EUC_CN 
PG_EUC_KR 
PG_EUC_TW 
PG_EUC_JIS_2004 
PG_UTF8 
PG_MULE_INTERNAL 
PG_LATIN1 
PG_LATIN2 
PG_LATIN3 
PG_LATIN4 
PG_LATIN5 
PG_LATIN6 
PG_LATIN7 
PG_LATIN8 
PG_LATIN9 
PG_LATIN10 
PG_WIN1256 
PG_WIN1258 
PG_WIN866 
PG_WIN874 
PG_KOI8R 
PG_WIN1251 
PG_WIN1252 
PG_ISO_8859_5 
PG_ISO_8859_6 
PG_ISO_8859_7 
PG_ISO_8859_8 
PG_WIN1250 
PG_WIN1253 
PG_WIN1254 
PG_WIN1255 
PG_WIN1257 
PG_KOI8U 
PG_SJIS 
PG_BIG5 
PG_GBK 
PG_UHC 
PG_GB18030 
PG_JOHAB 
PG_SHIFT_JIS_2004 
_PG_LAST_ENCODING_ 

Definition at line 224 of file pg_wchar.h.

227  : If you add some encoding don't forget to update
228  * the pg_enc2name_tbl[] array (in src/common/encnames.c),
229  * the pg_enc2gettext_tbl[] array (in src/common/encnames.c) and
230  * the pg_wchar_table[] array (in src/common/wchar.c) and to check
231  * PG_ENCODING_BE_LAST macro.
232  *
233  * PG_SQL_ASCII is default encoding and must be = 0.
234  *
235  * XXX We must avoid renumbering any backend encoding until libpq's major
236  * version number is increased beyond 5; it turns out that the backend
237  * encoding IDs are effectively part of libpq's ABI as far as 8.2 initdb and
238  * psql are concerned.
239  */
240 typedef enum pg_enc
241 {
242  PG_SQL_ASCII = 0, /* SQL/ASCII */
243  PG_EUC_JP, /* EUC for Japanese */
244  PG_EUC_CN, /* EUC for Chinese */
245  PG_EUC_KR, /* EUC for Korean */
246  PG_EUC_TW, /* EUC for Taiwan */
247  PG_EUC_JIS_2004, /* EUC-JIS-2004 */
248  PG_UTF8, /* Unicode UTF8 */
249  PG_MULE_INTERNAL, /* Mule internal code */
250  PG_LATIN1, /* ISO-8859-1 Latin 1 */
251  PG_LATIN2, /* ISO-8859-2 Latin 2 */
252  PG_LATIN3, /* ISO-8859-3 Latin 3 */
253  PG_LATIN4, /* ISO-8859-4 Latin 4 */
254  PG_LATIN5, /* ISO-8859-9 Latin 5 */
255  PG_LATIN6, /* ISO-8859-10 Latin6 */
256  PG_LATIN7, /* ISO-8859-13 Latin7 */
257  PG_LATIN8, /* ISO-8859-14 Latin8 */
258  PG_LATIN9, /* ISO-8859-15 Latin9 */
259  PG_LATIN10, /* ISO-8859-16 Latin10 */
260  PG_WIN1256, /* windows-1256 */
261  PG_WIN1258, /* Windows-1258 */
262  PG_WIN866, /* (MS-DOS CP866) */
263  PG_WIN874, /* windows-874 */
264  PG_KOI8R, /* KOI8-R */
265  PG_WIN1251, /* windows-1251 */
266  PG_WIN1252, /* windows-1252 */
267  PG_ISO_8859_5, /* ISO-8859-5 */
268  PG_ISO_8859_6, /* ISO-8859-6 */
269  PG_ISO_8859_7, /* ISO-8859-7 */
270  PG_ISO_8859_8, /* ISO-8859-8 */
271  PG_WIN1250, /* windows-1250 */
272  PG_WIN1253, /* windows-1253 */
273  PG_WIN1254, /* windows-1254 */
int32 encoding
Definition: pg_database.h:41

Function Documentation

◆ BIG5toCNS()

unsigned short BIG5toCNS ( unsigned short  big5,
unsigned char *  lc 
)

Definition at line 292 of file big5.c.

293 {
294  unsigned short cns = 0;
295  int i;
296 
297  if (big5 < 0xc940U)
298  {
299  /* level 1 */
300 
301  for (i = 0; i < sizeof(b1c4) / (sizeof(unsigned short) * 2); i++)
302  {
303  if (b1c4[i][0] == big5)
304  {
305  *lc = LC_CNS11643_4;
306  return (b1c4[i][1] | 0x8080U);
307  }
308  }
309 
310  if (0 < (cns = BinarySearchRange(big5Level1ToCnsPlane1, 23, big5)))
311  *lc = LC_CNS11643_1;
312  }
313  else if (big5 == 0xc94aU)
314  {
315  /* level 2 */
316  *lc = LC_CNS11643_1;
317  cns = 0x4442;
318  }
319  else
320  {
321  /* level 2 */
322  for (i = 0; i < sizeof(b2c3) / (sizeof(unsigned short) * 2); i++)
323  {
324  if (b2c3[i][0] == big5)
325  {
326  *lc = LC_CNS11643_3;
327  return (b2c3[i][1] | 0x8080U);
328  }
329  }
330 
331  if (0 < (cns = BinarySearchRange(big5Level2ToCnsPlane2, 46, big5)))
332  *lc = LC_CNS11643_2;
333  }
334 
335  if (0 == cns)
336  { /* no mapping Big5 to CNS 11643-1992 */
337  *lc = 0;
338  return (unsigned short) '?';
339  }
340 
341  return cns | 0x8080;
342 }
static const codes_t big5Level1ToCnsPlane1[25]
Definition: big5.c:25
static const codes_t big5Level2ToCnsPlane2[48]
Definition: big5.c:84
static unsigned short BinarySearchRange(const codes_t *array, int high, unsigned short code)
Definition: big5.c:208
static const unsigned short b2c3[][2]
Definition: big5.c:197
static const unsigned short b1c4[][2]
Definition: big5.c:189
int i
Definition: isn.c:73
#define LC_CNS11643_3
Definition: pg_wchar.h:192
#define LC_CNS11643_1
Definition: pg_wchar.h:137
#define LC_CNS11643_4
Definition: pg_wchar.h:193
#define LC_CNS11643_2
Definition: pg_wchar.h:138

References b1c4, b2c3, big5Level1ToCnsPlane1, big5Level2ToCnsPlane2, BinarySearchRange(), i, LC_CNS11643_1, LC_CNS11643_2, LC_CNS11643_3, and LC_CNS11643_4.

Referenced by big52euc_tw(), and big52mic().

◆ check_encoding_conversion_args()

void check_encoding_conversion_args ( int  src_encoding,
int  dest_encoding,
int  len,
int  expected_src_encoding,
int  expected_dest_encoding 
)

Definition at line 1669 of file mbutils.c.

1674 {
1675  if (!PG_VALID_ENCODING(src_encoding))
1676  elog(ERROR, "invalid source encoding ID: %d", src_encoding);
1677  if (src_encoding != expected_src_encoding && expected_src_encoding >= 0)
1678  elog(ERROR, "expected source encoding \"%s\", but got \"%s\"",
1679  pg_enc2name_tbl[expected_src_encoding].name,
1680  pg_enc2name_tbl[src_encoding].name);
1681  if (!PG_VALID_ENCODING(dest_encoding))
1682  elog(ERROR, "invalid destination encoding ID: %d", dest_encoding);
1683  if (dest_encoding != expected_dest_encoding && expected_dest_encoding >= 0)
1684  elog(ERROR, "expected destination encoding \"%s\", but got \"%s\"",
1685  pg_enc2name_tbl[expected_dest_encoding].name,
1686  pg_enc2name_tbl[dest_encoding].name);
1687  if (len < 0)
1688  elog(ERROR, "encoding conversion length must not be negative");
1689 }
#define ERROR
Definition: elog.h:39
#define elog(elevel,...)
Definition: elog.h:224
const pg_enc2name pg_enc2name_tbl[]
Definition: encnames.c:308
const void size_t len
#define PG_VALID_ENCODING(_enc)
Definition: pg_wchar.h:287
const char * name

References elog, ERROR, len, name, pg_enc2name_tbl, and PG_VALID_ENCODING.

◆ CNStoBIG5()

unsigned short CNStoBIG5 ( unsigned short  cns,
unsigned char  lc 
)

Definition at line 345 of file big5.c.

346 {
347  int i;
348  unsigned int big5 = 0;
349 
350  cns &= 0x7f7f;
351 
352  switch (lc)
353  {
354  case LC_CNS11643_1:
355  big5 = BinarySearchRange(cnsPlane1ToBig5Level1, 24, cns);
356  break;
357  case LC_CNS11643_2:
358  big5 = BinarySearchRange(cnsPlane2ToBig5Level2, 47, cns);
359  break;
360  case LC_CNS11643_3:
361  for (i = 0; i < sizeof(b2c3) / (sizeof(unsigned short) * 2); i++)
362  {
363  if (b2c3[i][1] == cns)
364  return b2c3[i][0];
365  }
366  break;
367  case LC_CNS11643_4:
368  for (i = 0; i < sizeof(b1c4) / (sizeof(unsigned short) * 2); i++)
369  {
370  if (b1c4[i][1] == cns)
371  return b1c4[i][0];
372  }
373  default:
374  break;
375  }
376  return big5;
377 }
static const codes_t cnsPlane2ToBig5Level2[49]
Definition: big5.c:136
static const codes_t cnsPlane1ToBig5Level1[26]
Definition: big5.c:54

References b1c4, b2c3, BinarySearchRange(), cnsPlane1ToBig5Level1, cnsPlane2ToBig5Level2, i, LC_CNS11643_1, LC_CNS11643_2, LC_CNS11643_3, and LC_CNS11643_4.

Referenced by euc_tw2big5(), and mic2big5().

◆ get_encoding_name_for_icu()

const char* get_encoding_name_for_icu ( int  encoding)

Definition at line 472 of file encnames.c.

473 {
475  return NULL;
476  return pg_enc2icu_tbl[encoding];
477 }
static const char *const pg_enc2icu_tbl[]
Definition: encnames.c:414
#define PG_VALID_BE_ENCODING(_enc)
Definition: pg_wchar.h:281

References encoding, pg_enc2icu_tbl, and PG_VALID_BE_ENCODING.

◆ GetDatabaseEncoding()

int GetDatabaseEncoding ( void  )

Definition at line 1261 of file mbutils.c.

1262 {
1263  return DatabaseEncoding->encoding;
1264 }
static const pg_enc2name * DatabaseEncoding
Definition: mbutils.c:81
pg_enc encoding
Definition: pg_wchar.h:342

References DatabaseEncoding, and pg_enc2name::encoding.

Referenced by ascii(), BeginCopyFrom(), BeginCopyTo(), char2wchar(), chr(), CollationCreate(), CollationGetCollid(), compareStrings(), convert_from_utf8(), convert_to_utf8(), CopyConversionError(), CopyConvertBuf(), cstr2sv(), dblink_connect(), dblink_get_conn(), DefineCollation(), Generic_Text_IC_like(), GenericMatchText(), get_collation_oid(), get_json_object_as_hash(), InitializeClientEncoding(), IsThereCollationInNamespace(), json_recv(), jsonb_from_cstring(), locate_stem_module(), LogicalOutputWrite(), makeJsonLexContext(), p_isspecial(), ParallelWorkerMain(), pg_database_encoding_character_incrementer(), pg_database_encoding_max_length(), pg_generic_charinc(), pg_newlocale_from_collation(), pg_perm_setlocale(), pg_set_regex_collation(), pg_strcoll_libc(), pg_strncoll_libc(), pg_unicode_to_server(), pg_unicode_to_server_noerror(), pg_verifymbstr(), pgss_store(), PLyUnicode_Bytes(), populate_array_json(), PrepareClientEncoding(), read_extension_script_file(), SetClientEncoding(), str_initcap(), str_tolower(), str_toupper(), sv2cstr(), text_position_setup(), to_ascii_default(), type_maximum_size(), unicode_assigned(), unicode_norm_form_from_string(), wchar2char(), xml_in(), xml_is_document(), xmlparse(), and xmltotext_with_options().

◆ GetDatabaseEncodingName()

◆ GetMessageEncoding()

int GetMessageEncoding ( void  )

Definition at line 1308 of file mbutils.c.

1309 {
1310  return MessageEncoding->encoding;
1311 }
static const pg_enc2name * MessageEncoding
Definition: mbutils.c:82

References pg_enc2name::encoding, and MessageEncoding.

◆ InitializeClientEncoding()

void InitializeClientEncoding ( void  )

Definition at line 281 of file mbutils.c.

282 {
283  int current_server_encoding;
284 
287 
290  {
291  /*
292  * Oops, the requested conversion is not available. We couldn't fail
293  * before, but we can now.
294  */
295  ereport(FATAL,
296  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
297  errmsg("conversion between %s and %s is not supported",
300  }
301 
302  /*
303  * Also look up the UTF8-to-server conversion function if needed. Since
304  * the server encoding is fixed within any one backend process, we don't
305  * have to do this more than once.
306  */
307  current_server_encoding = GetDatabaseEncoding();
308  if (current_server_encoding != PG_UTF8 &&
309  current_server_encoding != PG_SQL_ASCII)
310  {
311  Oid utf8_to_server_proc;
312 
314  utf8_to_server_proc =
316  current_server_encoding);
317  /* If there's no such conversion, just leave the pointer as NULL */
318  if (OidIsValid(utf8_to_server_proc))
319  {
320  FmgrInfo *finfo;
321 
323  sizeof(FmgrInfo));
324  fmgr_info_cxt(utf8_to_server_proc, finfo,
326  /* Set Utf8ToServerConvProc only after data is fully valid */
327  Utf8ToServerConvProc = finfo;
328  }
329  }
330 }
#define Assert(condition)
Definition: c.h:858
#define OidIsValid(objectId)
Definition: c.h:775
int errcode(int sqlerrcode)
Definition: elog.c:855
int errmsg(const char *fmt,...)
Definition: elog.c:1068
#define FATAL
Definition: elog.h:41
#define ereport(elevel,...)
Definition: elog.h:149
void fmgr_info_cxt(Oid functionId, FmgrInfo *finfo, MemoryContext mcxt)
Definition: fmgr.c:137
int GetDatabaseEncoding(void)
Definition: mbutils.c:1261
static FmgrInfo * Utf8ToServerConvProc
Definition: mbutils.c:75
int SetClientEncoding(int encoding)
Definition: mbutils.c:208
int PrepareClientEncoding(int encoding)
Definition: mbutils.c:110
const char * GetDatabaseEncodingName(void)
Definition: mbutils.c:1267
static bool backend_startup_complete
Definition: mbutils.c:90
static int pending_client_encoding
Definition: mbutils.c:91
MemoryContext TopMemoryContext
Definition: mcxt.c:149
void * MemoryContextAlloc(MemoryContext context, Size size)
Definition: mcxt.c:1181
Oid FindDefaultConversionProc(int32 for_encoding, int32 to_encoding)
Definition: namespace.c:4065
@ PG_SQL_ASCII
Definition: pg_wchar.h:226
@ PG_UTF8
Definition: pg_wchar.h:232
unsigned int Oid
Definition: postgres_ext.h:31
Definition: fmgr.h:57
bool IsTransactionState(void)
Definition: xact.c:385

References Assert, backend_startup_complete, ereport, errcode(), errmsg(), FATAL, FindDefaultConversionProc(), fmgr_info_cxt(), GetDatabaseEncoding(), GetDatabaseEncodingName(), IsTransactionState(), MemoryContextAlloc(), name, OidIsValid, pending_client_encoding, pg_enc2name_tbl, PG_SQL_ASCII, PG_UTF8, PrepareClientEncoding(), SetClientEncoding(), TopMemoryContext, and Utf8ToServerConvProc.

Referenced by InitPostgres().

◆ is_encoding_supported_by_icu()

bool is_encoding_supported_by_icu ( int  encoding)

Definition at line 461 of file encnames.c.

462 {
464  return false;
465  return (pg_enc2icu_tbl[encoding] != NULL);
466 }

References encoding, pg_enc2icu_tbl, and PG_VALID_BE_ENCODING.

Referenced by check_icu_locale_encoding(), createdb(), DefineCollation(), and lookup_collation().

◆ is_utf16_surrogate_first()

static bool is_utf16_surrogate_first ( pg_wchar  c)
inlinestatic

Definition at line 525 of file pg_wchar.h.

536 {

Referenced by json_lex_string(), str_udeescape(), and unistr().

◆ is_utf16_surrogate_second()

static bool is_utf16_surrogate_second ( pg_wchar  c)
inlinestatic

Definition at line 531 of file pg_wchar.h.

536 {

Referenced by json_lex_string(), str_udeescape(), and unistr().

◆ is_valid_unicode_codepoint()

static bool is_valid_unicode_codepoint ( pg_wchar  c)
inlinestatic

Definition at line 519 of file pg_wchar.h.

536 {

Referenced by check_unicode_value(), pg_unicode_to_server(), pg_unicode_to_server_noerror(), and unistr().

◆ latin2mic()

int latin2mic ( const unsigned char *  l,
unsigned char *  p,
int  len,
int  lc,
int  encoding,
bool  noError 
)

Definition at line 89 of file conv.c.

91 {
92  const unsigned char *start = l;
93  int c1;
94 
95  while (len > 0)
96  {
97  c1 = *l;
98  if (c1 == 0)
99  {
100  if (noError)
101  break;
102  report_invalid_encoding(encoding, (const char *) l, len);
103  }
104  if (IS_HIGHBIT_SET(c1))
105  *p++ = lc;
106  *p++ = c1;
107  l++;
108  len--;
109  }
110  *p = '\0';
111 
112  return l - start;
113 }
#define IS_HIGHBIT_SET(ch)
Definition: c.h:1155
return str start
void report_invalid_encoding(int encoding, const char *mbstr, int len)
Definition: mbutils.c:1698

References encoding, IS_HIGHBIT_SET, len, report_invalid_encoding(), and start.

Referenced by koi8r_to_mic(), latin1_to_mic(), latin2_to_mic(), latin3_to_mic(), and latin4_to_mic().

◆ latin2mic_with_table()

int latin2mic_with_table ( const unsigned char *  l,
unsigned char *  p,
int  len,
int  lc,
int  encoding,
const unsigned char *  tab,
bool  noError 
)

Definition at line 194 of file conv.c.

201 {
202  const unsigned char *start = l;
203  unsigned char c1,
204  c2;
205 
206  while (len > 0)
207  {
208  c1 = *l;
209  if (c1 == 0)
210  {
211  if (noError)
212  break;
213  report_invalid_encoding(encoding, (const char *) l, len);
214  }
215  if (!IS_HIGHBIT_SET(c1))
216  *p++ = c1;
217  else
218  {
219  c2 = tab[c1 - HIGHBIT];
220  if (c2)
221  {
222  *p++ = lc;
223  *p++ = c2;
224  }
225  else
226  {
227  if (noError)
228  break;
230  (const char *) l, len);
231  }
232  }
233  l++;
234  len--;
235  }
236  *p = '\0';
237 
238  return l - start;
239 }
#define HIGHBIT
Definition: c.h:1154
void report_untranslatable_char(int src_encoding, int dest_encoding, const char *mbstr, int len)
Definition: mbutils.c:1730
@ PG_MULE_INTERNAL
Definition: pg_wchar.h:233

References encoding, HIGHBIT, IS_HIGHBIT_SET, len, PG_MULE_INTERNAL, report_invalid_encoding(), report_untranslatable_char(), and start.

Referenced by iso_to_mic(), win1250_to_mic(), win1251_to_mic(), and win866_to_mic().

◆ local2local()

int local2local ( const unsigned char *  l,
unsigned char *  p,
int  len,
int  src_encoding,
int  dest_encoding,
const unsigned char *  tab,
bool  noError 
)

Definition at line 33 of file conv.c.

40 {
41  const unsigned char *start = l;
42  unsigned char c1,
43  c2;
44 
45  while (len > 0)
46  {
47  c1 = *l;
48  if (c1 == 0)
49  {
50  if (noError)
51  break;
52  report_invalid_encoding(src_encoding, (const char *) l, len);
53  }
54  if (!IS_HIGHBIT_SET(c1))
55  *p++ = c1;
56  else
57  {
58  c2 = tab[c1 - HIGHBIT];
59  if (c2)
60  *p++ = c2;
61  else
62  {
63  if (noError)
64  break;
65  report_untranslatable_char(src_encoding, dest_encoding,
66  (const char *) l, len);
67  }
68  }
69  l++;
70  len--;
71  }
72  *p = '\0';
73 
74  return l - start;
75 }

References HIGHBIT, IS_HIGHBIT_SET, len, report_invalid_encoding(), report_untranslatable_char(), and start.

Referenced by iso_to_koi8r(), iso_to_win1251(), iso_to_win866(), koi8r_to_iso(), koi8r_to_win1251(), koi8r_to_win866(), latin2_to_win1250(), win1250_to_latin2(), win1251_to_iso(), win1251_to_koi8r(), win1251_to_win866(), win866_to_iso(), win866_to_koi8r(), and win866_to_win1251().

◆ LocalToUtf()

int LocalToUtf ( const unsigned char *  iso,
int  len,
unsigned char *  utf,
const pg_mb_radix_tree map,
const pg_local_to_utf_combined cmap,
int  cmapsize,
utf_local_conversion_func  conv_func,
int  encoding,
bool  noError 
)

Definition at line 717 of file conv.c.

724 {
725  uint32 iiso;
726  int l;
727  const pg_local_to_utf_combined *cp;
728  const unsigned char *start = iso;
729 
731  ereport(ERROR,
732  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
733  errmsg("invalid encoding number: %d", encoding)));
734 
735  for (; len > 0; len -= l)
736  {
737  unsigned char b1 = 0;
738  unsigned char b2 = 0;
739  unsigned char b3 = 0;
740  unsigned char b4 = 0;
741 
742  /* "break" cases all represent errors */
743  if (*iso == '\0')
744  break;
745 
746  if (!IS_HIGHBIT_SET(*iso))
747  {
748  /* ASCII case is easy, assume it's one-to-one conversion */
749  *utf++ = *iso++;
750  l = 1;
751  continue;
752  }
753 
754  l = pg_encoding_verifymbchar(encoding, (const char *) iso, len);
755  if (l < 0)
756  break;
757 
758  /* collect coded char of length l */
759  if (l == 1)
760  b4 = *iso++;
761  else if (l == 2)
762  {
763  b3 = *iso++;
764  b4 = *iso++;
765  }
766  else if (l == 3)
767  {
768  b2 = *iso++;
769  b3 = *iso++;
770  b4 = *iso++;
771  }
772  else if (l == 4)
773  {
774  b1 = *iso++;
775  b2 = *iso++;
776  b3 = *iso++;
777  b4 = *iso++;
778  }
779  else
780  {
781  elog(ERROR, "unsupported character length %d", l);
782  iiso = 0; /* keep compiler quiet */
783  }
784  iiso = (b1 << 24 | b2 << 16 | b3 << 8 | b4);
785 
786  if (map)
787  {
788  uint32 converted = pg_mb_radix_conv(map, l, b1, b2, b3, b4);
789 
790  if (converted)
791  {
792  utf = store_coded_char(utf, converted);
793  continue;
794  }
795 
796  /* If there's a combined character map, try that */
797  if (cmap)
798  {
799  cp = bsearch(&iiso, cmap, cmapsize,
801 
802  if (cp)
803  {
804  utf = store_coded_char(utf, cp->utf1);
805  utf = store_coded_char(utf, cp->utf2);
806  continue;
807  }
808  }
809  }
810 
811  /* if there's a conversion function, try that */
812  if (conv_func)
813  {
814  uint32 converted = (*conv_func) (iiso);
815 
816  if (converted)
817  {
818  utf = store_coded_char(utf, converted);
819  continue;
820  }
821  }
822 
823  /* failed to translate this character */
824  iso -= l;
825  if (noError)
826  break;
828  (const char *) iso, len);
829  }
830 
831  /* if we broke out of loop early, must be invalid input */
832  if (len > 0 && !noError)
833  report_invalid_encoding(encoding, (const char *) iso, len);
834 
835  *utf = '\0';
836 
837  return iso - start;
838 }
unsigned int uint32
Definition: c.h:506
static uint32 pg_mb_radix_conv(const pg_mb_radix_tree *rt, int l, unsigned char b1, unsigned char b2, unsigned char b3, unsigned char b4)
Definition: conv.c:373
static int compare4(const void *p1, const void *p2)
Definition: conv.c:339
static unsigned char * store_coded_char(unsigned char *dest, uint32 code)
Definition: conv.c:353
int pg_encoding_verifymbchar(int encoding, const char *mbstr, int len)
Definition: wchar.c:2103

References compare4(), elog, encoding, ereport, errcode(), errmsg(), ERROR, IS_HIGHBIT_SET, len, pg_encoding_verifymbchar(), pg_mb_radix_conv(), PG_UTF8, PG_VALID_ENCODING, report_invalid_encoding(), report_untranslatable_char(), start, store_coded_char(), pg_local_to_utf_combined::utf1, and pg_local_to_utf_combined::utf2.

Referenced by big5_to_utf8(), euc_cn_to_utf8(), euc_jis_2004_to_utf8(), euc_jp_to_utf8(), euc_kr_to_utf8(), euc_tw_to_utf8(), gb18030_to_utf8(), gbk_to_utf8(), iso8859_to_utf8(), johab_to_utf8(), koi8r_to_utf8(), koi8u_to_utf8(), shift_jis_2004_to_utf8(), sjis_to_utf8(), uhc_to_utf8(), and win_to_utf8().

◆ mic2latin()

int mic2latin ( const unsigned char *  mic,
unsigned char *  p,
int  len,
int  lc,
int  encoding,
bool  noError 
)

Definition at line 127 of file conv.c.

129 {
130  const unsigned char *start = mic;
131  int c1;
132 
133  while (len > 0)
134  {
135  c1 = *mic;
136  if (c1 == 0)
137  {
138  if (noError)
139  break;
140  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic, len);
141  }
142  if (!IS_HIGHBIT_SET(c1))
143  {
144  /* easy for ASCII */
145  *p++ = c1;
146  mic++;
147  len--;
148  }
149  else
150  {
151  int l = pg_mule_mblen(mic);
152 
153  if (len < l)
154  {
155  if (noError)
156  break;
157  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic,
158  len);
159  }
160  if (l != 2 || c1 != lc || !IS_HIGHBIT_SET(mic[1]))
161  {
162  if (noError)
163  break;
165  (const char *) mic, len);
166  }
167  *p++ = mic[1];
168  mic += 2;
169  len -= 2;
170  }
171  }
172  *p = '\0';
173 
174  return mic - start;
175 }
int pg_mule_mblen(const unsigned char *s)
Definition: wchar.c:772

References encoding, IS_HIGHBIT_SET, len, PG_MULE_INTERNAL, pg_mule_mblen(), report_invalid_encoding(), report_untranslatable_char(), and start.

Referenced by mic_to_koi8r(), mic_to_latin1(), mic_to_latin2(), mic_to_latin3(), and mic_to_latin4().

◆ mic2latin_with_table()

int mic2latin_with_table ( const unsigned char *  mic,
unsigned char *  p,
int  len,
int  lc,
int  encoding,
const unsigned char *  tab,
bool  noError 
)

Definition at line 257 of file conv.c.

264 {
265  const unsigned char *start = mic;
266  unsigned char c1,
267  c2;
268 
269  while (len > 0)
270  {
271  c1 = *mic;
272  if (c1 == 0)
273  {
274  if (noError)
275  break;
276  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic, len);
277  }
278  if (!IS_HIGHBIT_SET(c1))
279  {
280  /* easy for ASCII */
281  *p++ = c1;
282  mic++;
283  len--;
284  }
285  else
286  {
287  int l = pg_mule_mblen(mic);
288 
289  if (len < l)
290  {
291  if (noError)
292  break;
293  report_invalid_encoding(PG_MULE_INTERNAL, (const char *) mic,
294  len);
295  }
296  if (l != 2 || c1 != lc || !IS_HIGHBIT_SET(mic[1]) ||
297  (c2 = tab[mic[1] - HIGHBIT]) == 0)
298  {
299  if (noError)
300  break;
302  (const char *) mic, len);
303  break; /* keep compiler quiet */
304  }
305  *p++ = c2;
306  mic += 2;
307  len -= 2;
308  }
309  }
310  *p = '\0';
311 
312  return mic - start;
313 }

References encoding, HIGHBIT, IS_HIGHBIT_SET, len, PG_MULE_INTERNAL, pg_mule_mblen(), report_invalid_encoding(), report_untranslatable_char(), and start.

Referenced by mic_to_iso(), mic_to_win1250(), mic_to_win1251(), and mic_to_win866().

◆ pg_any_to_server()

char* pg_any_to_server ( const char *  s,
int  len,
int  encoding 
)

Definition at line 676 of file mbutils.c.

677 {
678  if (len <= 0)
679  return unconstify(char *, s); /* empty string is always valid */
680 
683  {
684  /*
685  * No conversion is needed, but we must still validate the data.
686  */
687  (void) pg_verify_mbstr(DatabaseEncoding->encoding, s, len, false);
688  return unconstify(char *, s);
689  }
690 
692  {
693  /*
694  * No conversion is possible, but we must still validate the data,
695  * because the client-side code might have done string escaping using
696  * the selected client_encoding. If the client encoding is ASCII-safe
697  * then we just do a straight validation under that encoding. For an
698  * ASCII-unsafe encoding we have a problem: we dare not pass such data
699  * to the parser but we have no way to convert it. We compromise by
700  * rejecting the data if it contains any non-ASCII characters.
701  */
703  (void) pg_verify_mbstr(encoding, s, len, false);
704  else
705  {
706  int i;
707 
708  for (i = 0; i < len; i++)
709  {
710  if (s[i] == '\0' || IS_HIGHBIT_SET(s[i]))
711  ereport(ERROR,
712  (errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
713  errmsg("invalid byte value for encoding \"%s\": 0x%02x",
715  (unsigned char) s[i])));
716  }
717  }
718  return unconstify(char *, s);
719  }
720 
721  /* Fast path if we can use cached conversion function */
723  return perform_default_encoding_conversion(s, len, true);
724 
725  /* General case ... will not work outside transactions */
726  return (char *) pg_do_encoding_conversion((unsigned char *) unconstify(char *, s),
727  len,
728  encoding,
730 }
#define unconstify(underlying_type, expr)
Definition: c.h:1245
unsigned char * pg_do_encoding_conversion(unsigned char *src, int len, int src_encoding, int dest_encoding)
Definition: mbutils.c:356
static const pg_enc2name * ClientEncoding
Definition: mbutils.c:80
bool pg_verify_mbstr(int encoding, const char *mbstr, int len, bool noError)
Definition: mbutils.c:1566
static char * perform_default_encoding_conversion(const char *src, int len, bool is_client_to_server)
Definition: mbutils.c:783

References ClientEncoding, DatabaseEncoding, encoding, pg_enc2name::encoding, ereport, errcode(), errmsg(), ERROR, i, IS_HIGHBIT_SET, len, name, perform_default_encoding_conversion(), pg_do_encoding_conversion(), pg_enc2name_tbl, PG_SQL_ASCII, PG_VALID_BE_ENCODING, pg_verify_mbstr(), and unconstify.

Referenced by ASN1_STRING_to_text(), cache_single_string(), db_encoding_convert(), dsnowball_lexize(), pg_client_to_server(), pg_stat_statements_internal(), pgp_armor_headers(), PLyUnicode_Bytes(), read_extension_script_file(), tsearch_readline(), utf_u2e(), X509_NAME_to_cstring(), and xml_recv().

◆ pg_char_and_wchar_strcmp()

int pg_char_and_wchar_strcmp ( const char *  s1,
const pg_wchar s2 
)

Definition at line 41 of file wstrcmp.c.

42 {
43  while ((pg_wchar) *s1 == *s2++)
44  if (*s1++ == 0)
45  return 0;
46  return *(const unsigned char *) s1 - *(const pg_wchar *) (s2 - 1);
47 }
unsigned int pg_wchar
Definition: mbprint.c:31
char * s1
char * s2

References s1, and s2.

◆ pg_char_and_wchar_strncmp()

int pg_char_and_wchar_strncmp ( const char *  s1,
const pg_wchar s2,
size_t  n 
)

Definition at line 55 of file wstrncmp.c.

56 {
57  if (n == 0)
58  return 0;
59  do
60  {
61  if ((pg_wchar) ((unsigned char) *s1) != *s2++)
62  return ((pg_wchar) ((unsigned char) *s1) - *(s2 - 1));
63  if (*s1++ == 0)
64  break;
65  } while (--n != 0);
66  return 0;
67 }

References s1, and s2.

Referenced by element().

◆ pg_char_to_encoding()

int pg_char_to_encoding ( const char *  name)

Definition at line 549 of file encnames.c.

550 {
551  unsigned int nel = lengthof(pg_encname_tbl);
552  const pg_encname *base = pg_encname_tbl,
553  *last = base + nel - 1,
554  *position;
555  int result;
556  char buff[NAMEDATALEN],
557  *key;
558 
559  if (name == NULL || *name == '\0')
560  return -1;
561 
562  if (strlen(name) >= NAMEDATALEN)
563  return -1; /* it's certainly not in the table */
564 
565  key = clean_encoding_name(name, buff);
566 
567  while (last >= base)
568  {
569  position = base + ((last - base) >> 1);
570  result = key[0] - position->name[0];
571 
572  if (result == 0)
573  {
574  result = strcmp(key, position->name);
575  if (result == 0)
576  return position->encoding;
577  }
578  if (result < 0)
579  last = position - 1;
580  else
581  base = position + 1;
582  }
583  return -1;
584 }
#define lengthof(array)
Definition: c.h:788
static const pg_encname pg_encname_tbl[]
Definition: encnames.c:39
static char * clean_encoding_name(const char *key, char *newkey)
Definition: encnames.c:524
#define NAMEDATALEN

◆ pg_client_to_server()

char* pg_client_to_server ( const char *  s,
int  len 
)

Definition at line 660 of file mbutils.c.

661 {
663 }
char * pg_any_to_server(const char *s, int len, int encoding)
Definition: mbutils.c:676

References ClientEncoding, pg_enc2name::encoding, len, and pg_any_to_server().

Referenced by exec_bind_message(), parse_fcall_arguments(), pq_getmsgstring(), and pq_getmsgtext().

◆ pg_database_encoding_character_incrementer()

mbcharacter_incrementer pg_database_encoding_character_incrementer ( void  )

Definition at line 1523 of file mbutils.c.

1524 {
1525  /*
1526  * Eventually it might be best to add a field to pg_wchar_table[], but for
1527  * now we just use a switch.
1528  */
1529  switch (GetDatabaseEncoding())
1530  {
1531  case PG_UTF8:
1532  return pg_utf8_increment;
1533 
1534  case PG_EUC_JP:
1535  return pg_eucjp_increment;
1536 
1537  default:
1538  return pg_generic_charinc;
1539  }
1540 }
static bool pg_generic_charinc(unsigned char *charptr, int len)
Definition: mbutils.c:1325
static bool pg_utf8_increment(unsigned char *charptr, int length)
Definition: mbutils.c:1359
static bool pg_eucjp_increment(unsigned char *charptr, int length)
Definition: mbutils.c:1437
@ PG_EUC_JP
Definition: pg_wchar.h:227

References GetDatabaseEncoding(), PG_EUC_JP, pg_eucjp_increment(), pg_generic_charinc(), PG_UTF8, and pg_utf8_increment().

Referenced by make_greater_string().

◆ pg_database_encoding_max_length()

◆ pg_do_encoding_conversion()

unsigned char* pg_do_encoding_conversion ( unsigned char *  src,
int  len,
int  src_encoding,
int  dest_encoding 
)

Definition at line 356 of file mbutils.c.

358 {
359  unsigned char *result;
360  Oid proc;
361 
362  if (len <= 0)
363  return src; /* empty string is always valid */
364 
365  if (src_encoding == dest_encoding)
366  return src; /* no conversion required, assume valid */
367 
368  if (dest_encoding == PG_SQL_ASCII)
369  return src; /* any string is valid in SQL_ASCII */
370 
371  if (src_encoding == PG_SQL_ASCII)
372  {
373  /* No conversion is possible, but we must validate the result */
374  (void) pg_verify_mbstr(dest_encoding, (const char *) src, len, false);
375  return src;
376  }
377 
378  if (!IsTransactionState()) /* shouldn't happen */
379  elog(ERROR, "cannot perform encoding conversion outside a transaction");
380 
381  proc = FindDefaultConversionProc(src_encoding, dest_encoding);
382  if (!OidIsValid(proc))
383  ereport(ERROR,
384  (errcode(ERRCODE_UNDEFINED_FUNCTION),
385  errmsg("default conversion function for encoding \"%s\" to \"%s\" does not exist",
386  pg_encoding_to_char(src_encoding),
387  pg_encoding_to_char(dest_encoding))));
388 
389  /*
390  * Allocate space for conversion result, being wary of integer overflow.
391  *
392  * len * MAX_CONVERSION_GROWTH is typically a vast overestimate of the
393  * required space, so it might exceed MaxAllocSize even though the result
394  * would actually fit. We do not want to hand back a result string that
395  * exceeds MaxAllocSize, because callers might not cope gracefully --- but
396  * if we just allocate more than that, and don't use it, that's fine.
397  */
399  ereport(ERROR,
400  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
401  errmsg("out of memory"),
402  errdetail("String of %d bytes is too long for encoding conversion.",
403  len)));
404 
405  result = (unsigned char *)
407  (Size) len * MAX_CONVERSION_GROWTH + 1);
408 
409  (void) OidFunctionCall6(proc,
410  Int32GetDatum(src_encoding),
411  Int32GetDatum(dest_encoding),
412  CStringGetDatum((char *) src),
413  CStringGetDatum((char *) result),
415  BoolGetDatum(false));
416 
417  /*
418  * If the result is large, it's worth repalloc'ing to release any extra
419  * space we asked for. The cutoff here is somewhat arbitrary, but we
420  * *must* check when len * MAX_CONVERSION_GROWTH exceeds MaxAllocSize.
421  */
422  if (len > 1000000)
423  {
424  Size resultlen = strlen((char *) result);
425 
426  if (resultlen >= MaxAllocSize)
427  ereport(ERROR,
428  (errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
429  errmsg("out of memory"),
430  errdetail("String of %d bytes is too long for encoding conversion.",
431  len)));
432 
433  result = (unsigned char *) repalloc(result, resultlen + 1);
434  }
435 
436  return result;
437 }
size_t Size
Definition: c.h:605
int errdetail(const char *fmt,...)
Definition: elog.c:1201
#define OidFunctionCall6(functionId, arg1, arg2, arg3, arg4, arg5, arg6)
Definition: fmgr.h:690
MemoryContext CurrentMemoryContext
Definition: mcxt.c:143
void * repalloc(void *pointer, Size size)
Definition: mcxt.c:1541
void * MemoryContextAllocHuge(MemoryContext context, Size size)
Definition: mcxt.c:1640
#define MaxAllocHugeSize
Definition: memutils.h:45
#define MaxAllocSize
Definition: memutils.h:40
#define MAX_CONVERSION_GROWTH
Definition: pg_wchar.h:302
#define pg_encoding_to_char
Definition: pg_wchar.h:630
static Datum BoolGetDatum(bool X)
Definition: postgres.h:102
static Datum CStringGetDatum(const char *X)
Definition: postgres.h:350
static Datum Int32GetDatum(int32 X)
Definition: postgres.h:212

References BoolGetDatum(), CStringGetDatum(), CurrentMemoryContext, elog, ereport, errcode(), errdetail(), errmsg(), ERROR, FindDefaultConversionProc(), Int32GetDatum(), IsTransactionState(), len, MAX_CONVERSION_GROWTH, MaxAllocHugeSize, MaxAllocSize, MemoryContextAllocHuge(), OidFunctionCall6, OidIsValid, pg_encoding_to_char, PG_SQL_ASCII, pg_verify_mbstr(), and repalloc().

Referenced by convert_charset(), pg_any_to_server(), pg_convert(), and pg_server_to_any().

◆ pg_do_encoding_conversion_buf()

int pg_do_encoding_conversion_buf ( Oid  proc,
int  src_encoding,
int  dest_encoding,
unsigned char *  src,
int  srclen,
unsigned char *  dest,
int  destlen,
bool  noError 
)

Definition at line 469 of file mbutils.c.

475 {
476  Datum result;
477 
478  /*
479  * If the destination buffer is not large enough to hold the result in the
480  * worst case, limit the input size passed to the conversion function.
481  */
482  if ((Size) srclen >= ((destlen - 1) / (Size) MAX_CONVERSION_GROWTH))
483  srclen = ((destlen - 1) / (Size) MAX_CONVERSION_GROWTH);
484 
485  result = OidFunctionCall6(proc,
486  Int32GetDatum(src_encoding),
487  Int32GetDatum(dest_encoding),
488  CStringGetDatum((char *) src),
489  CStringGetDatum((char *) dest),
490  Int32GetDatum(srclen),
491  BoolGetDatum(noError));
492  return DatumGetInt32(result);
493 }
uintptr_t Datum
Definition: postgres.h:64
static int32 DatumGetInt32(Datum X)
Definition: postgres.h:202

References BoolGetDatum(), CStringGetDatum(), DatumGetInt32(), generate_unaccent_rules::dest, Int32GetDatum(), MAX_CONVERSION_GROWTH, and OidFunctionCall6.

Referenced by CopyConversionError(), CopyConvertBuf(), and test_enc_conversion().

◆ pg_dsplen()

int pg_dsplen ( const char *  mbstr)

Definition at line 1030 of file mbutils.c.

1031 {
1032  return pg_wchar_table[DatabaseEncoding->encoding].dsplen((const unsigned char *) mbstr);
1033 }
mbdisplaylen_converter dsplen
Definition: pg_wchar.h:383

References DatabaseEncoding, pg_wchar_tbl::dsplen, pg_enc2name::encoding, and pg_wchar_table.

Referenced by p_isspecial().

◆ pg_encoding_dsplen()

int pg_encoding_dsplen ( int  encoding,
const char *  mbstr 
)

Definition at line 2090 of file wchar.c.

2091 {
2092  return (PG_VALID_ENCODING(encoding) ?
2093  pg_wchar_table[encoding].dsplen((const unsigned char *) mbstr) :
2094  pg_wchar_table[PG_SQL_ASCII].dsplen((const unsigned char *) mbstr));
2095 }

References encoding, PG_SQL_ASCII, PG_VALID_ENCODING, and pg_wchar_table.

Referenced by PQdsplen(), and reportErrorPosition().

◆ pg_encoding_max_length()

int pg_encoding_max_length ( int  encoding)

◆ pg_encoding_mb2wchar_with_len()

int pg_encoding_mb2wchar_with_len ( int  encoding,
const char *  from,
pg_wchar to,
int  len 
)

Definition at line 993 of file mbutils.c.

995 {
996  return pg_wchar_table[encoding].mb2wchar_with_len((const unsigned char *) from, to, len);
997 }
mb2wchar_with_len_converter mb2wchar_with_len
Definition: pg_wchar.h:378

References encoding, len, pg_wchar_tbl::mb2wchar_with_len, and pg_wchar_table.

◆ pg_encoding_mbcliplen()

int pg_encoding_mbcliplen ( int  encoding,
const char *  mbstr,
int  len,
int  limit 
)

Definition at line 1093 of file mbutils.c.

1095 {
1096  mblen_converter mblen_fn;
1097  int clen = 0;
1098  int l;
1099 
1100  /* optimization for single byte encoding */
1101  if (pg_encoding_max_length(encoding) == 1)
1102  return cliplen(mbstr, len, limit);
1103 
1104  mblen_fn = pg_wchar_table[encoding].mblen;
1105 
1106  while (len > 0 && *mbstr)
1107  {
1108  l = (*mblen_fn) ((const unsigned char *) mbstr);
1109  if ((clen + l) > limit)
1110  break;
1111  clen += l;
1112  if (clen == limit)
1113  break;
1114  len -= l;
1115  mbstr += l;
1116  }
1117  return clen;
1118 }
static int cliplen(const char *str, int len, int limit)
Definition: mbutils.c:1150
int(* mblen_converter)(const unsigned char *mbstr)
Definition: pg_wchar.h:366
mblen_converter mblen
Definition: pg_wchar.h:382
int pg_encoding_max_length(int encoding)
Definition: wchar.c:2127

References cliplen(), encoding, len, pg_wchar_tbl::mblen, pg_encoding_max_length(), and pg_wchar_table.

Referenced by pg_mbcliplen().

◆ pg_encoding_mblen()

int pg_encoding_mblen ( int  encoding,
const char *  mbstr 
)

Definition at line 2069 of file wchar.c.

2070 {
2071  return (PG_VALID_ENCODING(encoding) ?
2072  pg_wchar_table[encoding].mblen((const unsigned char *) mbstr) :
2073  pg_wchar_table[PG_SQL_ASCII].mblen((const unsigned char *) mbstr));
2074 }

References encoding, PG_SQL_ASCII, PG_VALID_ENCODING, and pg_wchar_table.

Referenced by CopyAttributeOutCSV(), CopyAttributeOutText(), pg_encoding_mblen_bounded(), PQescapeInternal(), PQescapeStringInternal(), PQmblen(), PQmblenBounded(), report_invalid_encoding(), and report_untranslatable_char().

◆ pg_encoding_mblen_bounded()

int pg_encoding_mblen_bounded ( int  encoding,
const char *  mbstr 
)

Definition at line 2081 of file wchar.c.

2082 {
2083  return strnlen(mbstr, pg_encoding_mblen(encoding, mbstr));
2084 }
size_t strnlen(const char *str, size_t maxlen)
Definition: strnlen.c:26
int pg_encoding_mblen(int encoding, const char *mbstr)
Definition: wchar.c:2069

References encoding, pg_encoding_mblen(), and strnlen().

◆ pg_encoding_to_char()

const char* pg_encoding_to_char ( int  encoding)

Definition at line 587 of file encnames.c.

588 {
590  {
591  const pg_enc2name *p = &pg_enc2name_tbl[encoding];
592 
593  Assert(encoding == p->encoding);
594  return p->name;
595  }
596  return "";
597 }

◆ pg_encoding_verifymbchar()

int pg_encoding_verifymbchar ( int  encoding,
const char *  mbstr,
int  len 
)

Definition at line 2103 of file wchar.c.

2104 {
2105  return (PG_VALID_ENCODING(encoding) ?
2106  pg_wchar_table[encoding].mbverifychar((const unsigned char *) mbstr, len) :
2107  pg_wchar_table[PG_SQL_ASCII].mbverifychar((const unsigned char *) mbstr, len));
2108 }

References encoding, len, PG_SQL_ASCII, PG_VALID_ENCODING, and pg_wchar_table.

Referenced by big52euc_tw(), big52mic(), euc_jis_20042shift_jis_2004(), euc_jp2mic(), euc_jp2sjis(), euc_kr2mic(), euc_tw2big5(), euc_tw2mic(), LocalToUtf(), mic2big5(), mic2euc_jp(), mic2euc_kr(), mic2euc_tw(), mic2sjis(), shift_jis_20042euc_jis_2004(), and sjis2euc_jp().

◆ pg_encoding_verifymbstr()

int pg_encoding_verifymbstr ( int  encoding,
const char *  mbstr,
int  len 
)

Definition at line 2116 of file wchar.c.

2117 {
2118  return (PG_VALID_ENCODING(encoding) ?
2119  pg_wchar_table[encoding].mbverifystr((const unsigned char *) mbstr, len) :
2120  pg_wchar_table[PG_SQL_ASCII].mbverifystr((const unsigned char *) mbstr, len));
2121 }

References encoding, len, PG_SQL_ASCII, PG_VALID_ENCODING, and pg_wchar_table.

Referenced by add_file_to_manifest(), CopyConvertBuf(), and test_enc_conversion().

◆ pg_encoding_wchar2mb_with_len()

int pg_encoding_wchar2mb_with_len ( int  encoding,
const pg_wchar from,
char *  to,
int  len 
)

Definition at line 1015 of file mbutils.c.

1017 {
1018  return pg_wchar_table[encoding].wchar2mb_with_len(from, (unsigned char *) to, len);
1019 }
wchar2mb_with_len_converter wchar2mb_with_len
Definition: pg_wchar.h:380

References encoding, len, pg_wchar_table, and pg_wchar_tbl::wchar2mb_with_len.

◆ pg_get_client_encoding()

int pg_get_client_encoding ( void  )

Definition at line 336 of file mbutils.c.

337 {
338  return ClientEncoding->encoding;
339 }

References ClientEncoding, and pg_enc2name::encoding.

Referenced by BeginCopyFrom(), BeginCopyTo(), and xml_send().

◆ pg_get_client_encoding_name()

const char* pg_get_client_encoding_name ( void  )

Definition at line 345 of file mbutils.c.

346 {
347  return ClientEncoding->name;
348 }

References ClientEncoding, and pg_enc2name::name.

◆ pg_mb2wchar()

int pg_mb2wchar ( const char *  from,
pg_wchar to 
)

Definition at line 979 of file mbutils.c.

980 {
981  return pg_wchar_table[DatabaseEncoding->encoding].mb2wchar_with_len((const unsigned char *) from, to, strlen(from));
982 }

References DatabaseEncoding, pg_enc2name::encoding, pg_wchar_tbl::mb2wchar_with_len, and pg_wchar_table.

◆ pg_mb2wchar_with_len()

◆ pg_mbcharcliplen()

int pg_mbcharcliplen ( const char *  mbstr,
int  len,
int  limit 
)

Definition at line 1125 of file mbutils.c.

1126 {
1127  int clen = 0;
1128  int nch = 0;
1129  int l;
1130 
1131  /* optimization for single byte encoding */
1133  return cliplen(mbstr, len, limit);
1134 
1135  while (len > 0 && *mbstr)
1136  {
1137  l = pg_mblen(mbstr);
1138  nch++;
1139  if (nch > limit)
1140  break;
1141  clen += l;
1142  len -= l;
1143  mbstr += l;
1144  }
1145  return clen;
1146 }
int pg_database_encoding_max_length(void)
Definition: mbutils.c:1546
int pg_mblen(const char *mbstr)
Definition: mbutils.c:1023

References cliplen(), len, pg_database_encoding_max_length(), and pg_mblen().

Referenced by bpchar(), bpchar_input(), text_left(), text_right(), varchar(), and varchar_input().

◆ pg_mbcliplen()

◆ pg_mblen()

int pg_mblen ( const char *  mbstr)

Definition at line 1023 of file mbutils.c.

1024 {
1025  return pg_wchar_table[DatabaseEncoding->encoding].mblen((const unsigned char *) mbstr);
1026 }

References DatabaseEncoding, pg_enc2name::encoding, pg_wchar_tbl::mblen, and pg_wchar_table.

Referenced by addCompoundAffixFlagValue(), bit_in(), charlen_to_bytelen(), DCH_from_char(), dotrim(), find_word(), findchar(), findchar2(), findwrd(), gbt_var_node_cp_len(), get_modifiers(), get_nextfield(), get_wildcard_part(), getlexeme(), getNextFlagFromString(), gettoken_query(), gettoken_query_standard(), gettoken_query_websearch(), gettoken_tsvector(), hex_decode_safe(), infix(), initTrie(), lpad(), make_trigrams(), map_sql_identifier_to_xml_name(), map_xml_name_to_sql_identifier(), match_prosrc_to_literal(), mb_strchr(), NIImportAffixes(), NIImportDictionary(), NIImportOOAffixes(), NUM_eat_non_data_chars(), NUM_processor(), parse_affentry(), parse_format(), parse_lquery(), parse_ltree(), parse_or_operator(), parse_re_flags(), parse_test_flags(), pg_base64_decode(), pg_mbcharcliplen(), pg_mbstrlen(), pg_mbstrlen_with_len(), prssyntaxerror(), readstoplist(), report_json_context(), rpad(), RS_compile(), RS_execute(), RS_isRegis(), similar_escape_internal(), split_text(), t_isalnum(), t_isalpha(), t_isdigit(), t_isprint(), t_isspace(), text_format(), text_position_next(), text_reverse(), text_substring(), text_to_bits(), textregexreplace(), thesaurusRead(), TParserGet(), translate(), ts_stat_sql(), tsvectorout(), unaccent_lexize(), varbit_in(), varstr_levenshtein(), and wchareq().

◆ pg_mbstrlen()

int pg_mbstrlen ( const char *  mbstr)

Definition at line 1037 of file mbutils.c.

1038 {
1039  int len = 0;
1040 
1041  /* optimization for single byte encoding */
1043  return strlen(mbstr);
1044 
1045  while (*mbstr)
1046  {
1047  mbstr += pg_mblen(mbstr);
1048  len++;
1049  }
1050  return len;
1051 }

References len, pg_database_encoding_max_length(), and pg_mblen().

Referenced by NUM_processor(), and text_format_append_string().

◆ pg_mbstrlen_with_len()

int pg_mbstrlen_with_len ( const char *  mbstr,
int  limit 
)

Definition at line 1057 of file mbutils.c.

1058 {
1059  int len = 0;
1060 
1061  /* optimization for single byte encoding */
1063  return limit;
1064 
1065  while (limit > 0 && *mbstr)
1066  {
1067  int l = pg_mblen(mbstr);
1068 
1069  limit -= l;
1070  mbstr += l;
1071  len++;
1072  }
1073  return len;
1074 }

References len, pg_database_encoding_max_length(), and pg_mblen().

Referenced by bpchar(), bpchar_input(), bpcharlen(), executor_errposition(), lpad(), match_prosrc_to_query(), parser_errposition(), plpgsql_scanner_errposition(), rpad(), similar_escape_internal(), text_left(), text_length(), text_position_get_match_pos(), text_right(), text_substring(), unicode_assigned(), unicode_is_normalized(), unicode_normalize_func(), and varstr_levenshtein().

◆ pg_mule_mblen()

int pg_mule_mblen ( const unsigned char *  s)

Definition at line 772 of file wchar.c.

773 {
774  int len;
775 
776  if (IS_LC1(*s))
777  len = 2;
778  else if (IS_LCPRV1(*s))
779  len = 3;
780  else if (IS_LC2(*s))
781  len = 3;
782  else if (IS_LCPRV2(*s))
783  len = 4;
784  else
785  len = 1; /* assume ASCII */
786  return len;
787 }
#define IS_LCPRV2(c)
Definition: pg_wchar.h:164
#define IS_LC2(c)
Definition: pg_wchar.h:144
#define IS_LCPRV1(c)
Definition: pg_wchar.h:152
#define IS_LC1(c)
Definition: pg_wchar.h:126

References IS_LC1, IS_LC2, IS_LCPRV1, IS_LCPRV2, and len.

Referenced by mic2latin(), mic2latin_with_table(), and pg_mule_verifychar().

◆ pg_server_to_any()

char* pg_server_to_any ( const char *  s,
int  len,
int  encoding 
)

Definition at line 749 of file mbutils.c.

750 {
751  if (len <= 0)
752  return unconstify(char *, s); /* empty string is always valid */
753 
756  return unconstify(char *, s); /* assume data is valid */
757 
759  {
760  /* No conversion is possible, but we must validate the result */
761  (void) pg_verify_mbstr(encoding, s, len, false);
762  return unconstify(char *, s);
763  }
764 
765  /* Fast path if we can use cached conversion function */
767  return perform_default_encoding_conversion(s, len, false);
768 
769  /* General case ... will not work outside transactions */
770  return (char *) pg_do_encoding_conversion((unsigned char *) unconstify(char *, s),
771  len,
773  encoding);
774 }

References ClientEncoding, DatabaseEncoding, encoding, pg_enc2name::encoding, len, perform_default_encoding_conversion(), pg_do_encoding_conversion(), PG_SQL_ASCII, pg_verify_mbstr(), and unconstify.

Referenced by compareStrings(), CopyAttributeOutCSV(), CopyAttributeOutText(), daitch_mokotoff(), DoCopyTo(), dsnowball_lexize(), hv_fetch_string(), hv_store_string(), pg_server_to_client(), PLyUnicode_FromStringAndSize(), and utf_e2u().

◆ pg_server_to_client()

char* pg_server_to_client ( const char *  s,
int  len 
)

Definition at line 738 of file mbutils.c.

739 {
741 }
char * pg_server_to_any(const char *s, int len, int encoding)
Definition: mbutils.c:749

References ClientEncoding, pg_enc2name::encoding, len, and pg_server_to_any().

Referenced by pq_puttextmessage(), pq_sendcountedtext(), pq_sendstring(), pq_sendtext(), and pq_writestring().

◆ pg_unicode_to_server()

void pg_unicode_to_server ( pg_wchar  c,
unsigned char *  s 
)

Definition at line 864 of file mbutils.c.

865 {
866  unsigned char c_as_utf8[MAX_MULTIBYTE_CHAR_LEN + 1];
867  int c_as_utf8_len;
868  int server_encoding;
869 
870  /*
871  * Complain if invalid Unicode code point. The choice of errcode here is
872  * debatable, but really our caller should have checked this anyway.
873  */
875  ereport(ERROR,
876  (errcode(ERRCODE_SYNTAX_ERROR),
877  errmsg("invalid Unicode code point")));
878 
879  /* Otherwise, if it's in ASCII range, conversion is trivial */
880  if (c <= 0x7F)
881  {
882  s[0] = (unsigned char) c;
883  s[1] = '\0';
884  return;
885  }
886 
887  /* If the server encoding is UTF-8, we just need to reformat the code */
888  server_encoding = GetDatabaseEncoding();
889  if (server_encoding == PG_UTF8)
890  {
891  unicode_to_utf8(c, s);
892  s[pg_utf_mblen(s)] = '\0';
893  return;
894  }
895 
896  /* For all other cases, we must have a conversion function available */
897  if (Utf8ToServerConvProc == NULL)
898  ereport(ERROR,
899  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
900  errmsg("conversion between %s and %s is not supported",
903 
904  /* Construct UTF-8 source string */
905  unicode_to_utf8(c, c_as_utf8);
906  c_as_utf8_len = pg_utf_mblen(c_as_utf8);
907  c_as_utf8[c_as_utf8_len] = '\0';
908 
909  /* Convert, or throw error if we can't */
912  Int32GetDatum(server_encoding),
913  CStringGetDatum((char *) c_as_utf8),
914  CStringGetDatum((char *) s),
915  Int32GetDatum(c_as_utf8_len),
916  BoolGetDatum(false));
917 }
#define FunctionCall6(flinfo, arg1, arg2, arg3, arg4, arg5, arg6)
Definition: fmgr.h:670
#define MAX_MULTIBYTE_CHAR_LEN
Definition: pg_wchar.h:33
#define pg_utf_mblen
Definition: pg_wchar.h:633
static unsigned char * unicode_to_utf8(pg_wchar c, unsigned char *utf8string)
Definition: pg_wchar.h:575
static bool is_valid_unicode_codepoint(pg_wchar c)
Definition: pg_wchar.h:519
char * c

References BoolGetDatum(), CStringGetDatum(), ereport, errcode(), errmsg(), ERROR, FunctionCall6, GetDatabaseEncoding(), GetDatabaseEncodingName(), Int32GetDatum(), is_valid_unicode_codepoint(), MAX_MULTIBYTE_CHAR_LEN, name, pg_enc2name_tbl, PG_UTF8, pg_utf_mblen, unicode_to_utf8(), and Utf8ToServerConvProc.

Referenced by map_xml_name_to_sql_identifier(), str_udeescape(), and unistr().

◆ pg_unicode_to_server_noerror()

bool pg_unicode_to_server_noerror ( pg_wchar  c,
unsigned char *  s 
)

Definition at line 926 of file mbutils.c.

927 {
928  unsigned char c_as_utf8[MAX_MULTIBYTE_CHAR_LEN + 1];
929  int c_as_utf8_len;
930  int converted_len;
931  int server_encoding;
932 
933  /* Fail if invalid Unicode code point */
935  return false;
936 
937  /* Otherwise, if it's in ASCII range, conversion is trivial */
938  if (c <= 0x7F)
939  {
940  s[0] = (unsigned char) c;
941  s[1] = '\0';
942  return true;
943  }
944 
945  /* If the server encoding is UTF-8, we just need to reformat the code */
946  server_encoding = GetDatabaseEncoding();
947  if (server_encoding == PG_UTF8)
948  {
949  unicode_to_utf8(c, s);
950  s[pg_utf_mblen(s)] = '\0';
951  return true;
952  }
953 
954  /* For all other cases, we must have a conversion function available */
955  if (Utf8ToServerConvProc == NULL)
956  return false;
957 
958  /* Construct UTF-8 source string */
959  unicode_to_utf8(c, c_as_utf8);
960  c_as_utf8_len = pg_utf_mblen(c_as_utf8);
961  c_as_utf8[c_as_utf8_len] = '\0';
962 
963  /* Convert, but without throwing error if we can't */
966  Int32GetDatum(server_encoding),
967  CStringGetDatum((char *) c_as_utf8),
968  CStringGetDatum((char *) s),
969  Int32GetDatum(c_as_utf8_len),
970  BoolGetDatum(true)));
971 
972  /* Conversion was successful iff it consumed the whole input */
973  return (converted_len == c_as_utf8_len);
974 }

References BoolGetDatum(), CStringGetDatum(), DatumGetInt32(), FunctionCall6, GetDatabaseEncoding(), Int32GetDatum(), is_valid_unicode_codepoint(), MAX_MULTIBYTE_CHAR_LEN, PG_UTF8, pg_utf_mblen, unicode_to_utf8(), and Utf8ToServerConvProc.

Referenced by json_lex_string().

◆ pg_utf8_islegal()

bool pg_utf8_islegal ( const unsigned char *  source,
int  length 
)

Definition at line 1953 of file wchar.c.

1954 {
1955  unsigned char a;
1956 
1957  switch (length)
1958  {
1959  default:
1960  /* reject lengths 5 and 6 for now */
1961  return false;
1962  case 4:
1963  a = source[3];
1964  if (a < 0x80 || a > 0xBF)
1965  return false;
1966  /* FALL THRU */
1967  case 3:
1968  a = source[2];
1969  if (a < 0x80 || a > 0xBF)
1970  return false;
1971  /* FALL THRU */
1972  case 2:
1973  a = source[1];
1974  switch (*source)
1975  {
1976  case 0xE0:
1977  if (a < 0xA0 || a > 0xBF)
1978  return false;
1979  break;
1980  case 0xED:
1981  if (a < 0x80 || a > 0x9F)
1982  return false;
1983  break;
1984  case 0xF0:
1985  if (a < 0x90 || a > 0xBF)
1986  return false;
1987  break;
1988  case 0xF4:
1989  if (a < 0x80 || a > 0x8F)
1990  return false;
1991  break;
1992  default:
1993  if (a < 0x80 || a > 0xBF)
1994  return false;
1995  break;
1996  }
1997  /* FALL THRU */
1998  case 1:
1999  a = *source;
2000  if (a >= 0x80 && a < 0xC2)
2001  return false;
2002  if (a > 0xF4)
2003  return false;
2004  break;
2005  }
2006  return true;
2007 }
int a
Definition: isn.c:69
static rewind_source * source
Definition: pg_rewind.c:89

References a, and source.

Referenced by chr(), pg_utf8_string_len(), pg_utf8_verifychar(), utf8_to_iso8859_1(), and UtfToLocal().

◆ pg_utf_mblen()

int pg_utf_mblen ( const unsigned char *  s)

Definition at line 517 of file wchar.c.

518 {
519  int len;
520 
521  if ((*s & 0x80) == 0)
522  len = 1;
523  else if ((*s & 0xe0) == 0xc0)
524  len = 2;
525  else if ((*s & 0xf0) == 0xe0)
526  len = 3;
527  else if ((*s & 0xf8) == 0xf0)
528  len = 4;
529 #ifdef NOT_USED
530  else if ((*s & 0xfc) == 0xf8)
531  len = 5;
532  else if ((*s & 0xfe) == 0xfc)
533  len = 6;
534 #endif
535  else
536  len = 1;
537  return len;
538 }

References len.

Referenced by pg_utf8_verifystr(), and pg_wchar2utf_with_len().

◆ pg_valid_client_encoding()

int pg_valid_client_encoding ( const char *  name)

Definition at line 485 of file encnames.c.

486 {
487  int enc;
488 
489  if ((enc = pg_char_to_encoding(name)) < 0)
490  return -1;
491 
493  return -1;
494 
495  return enc;
496 }
enc
int pg_char_to_encoding(const char *name)
Definition: encnames.c:549
#define PG_VALID_FE_ENCODING(_enc)
Definition: pg_wchar.h:291

References enc, name, pg_char_to_encoding(), and PG_VALID_FE_ENCODING.

Referenced by check_client_encoding().

◆ pg_valid_server_encoding()

int pg_valid_server_encoding ( const char *  name)

Definition at line 499 of file encnames.c.

500 {
501  int enc;
502 
503  if ((enc = pg_char_to_encoding(name)) < 0)
504  return -1;
505 
507  return -1;
508 
509  return enc;
510 }

References enc, name, pg_char_to_encoding(), and PG_VALID_BE_ENCODING.

◆ pg_valid_server_encoding_id()

int pg_valid_server_encoding_id ( int  encoding)

Definition at line 513 of file encnames.c.

514 {
516 }

◆ pg_verify_mbstr()

bool pg_verify_mbstr ( int  encoding,
const char *  mbstr,
int  len,
bool  noError 
)

Definition at line 1566 of file mbutils.c.

1567 {
1568  int oklen;
1569 
1571 
1572  oklen = pg_wchar_table[encoding].mbverifystr((const unsigned char *) mbstr, len);
1573  if (oklen != len)
1574  {
1575  if (noError)
1576  return false;
1577  report_invalid_encoding(encoding, mbstr + oklen, len - oklen);
1578  }
1579  return true;
1580 }
mbstr_verifier mbverifystr
Definition: pg_wchar.h:385

References Assert, encoding, len, pg_wchar_tbl::mbverifystr, PG_VALID_ENCODING, pg_wchar_table, and report_invalid_encoding().

Referenced by AddFileToBackupManifest(), LogicalOutputWrite(), pg_any_to_server(), pg_convert(), pg_do_encoding_conversion(), pg_server_to_any(), pg_verifymbstr(), and read_extension_script_file().

◆ pg_verify_mbstr_len()

int pg_verify_mbstr_len ( int  encoding,
const char *  mbstr,
int  len,
bool  noError 
)

Definition at line 1597 of file mbutils.c.

1598 {
1599  mbchar_verifier mbverifychar;
1600  int mb_len;
1601 
1603 
1604  /*
1605  * In single-byte encodings, we need only reject nulls (\0).
1606  */
1607  if (pg_encoding_max_length(encoding) <= 1)
1608  {
1609  const char *nullpos = memchr(mbstr, 0, len);
1610 
1611  if (nullpos == NULL)
1612  return len;
1613  if (noError)
1614  return -1;
1615  report_invalid_encoding(encoding, nullpos, 1);
1616  }
1617 
1618  /* fetch function pointer just once */
1619  mbverifychar = pg_wchar_table[encoding].mbverifychar;
1620 
1621  mb_len = 0;
1622 
1623  while (len > 0)
1624  {
1625  int l;
1626 
1627  /* fast path for ASCII-subset characters */
1628  if (!IS_HIGHBIT_SET(*mbstr))
1629  {
1630  if (*mbstr != '\0')
1631  {
1632  mb_len++;
1633  mbstr++;
1634  len--;
1635  continue;
1636  }
1637  if (noError)
1638  return -1;
1640  }
1641 
1642  l = (*mbverifychar) ((const unsigned char *) mbstr, len);
1643 
1644  if (l < 0)
1645  {
1646  if (noError)
1647  return -1;
1649  }
1650 
1651  mbstr += l;
1652  len -= l;
1653  mb_len++;
1654  }
1655  return mb_len;
1656 }
int(* mbchar_verifier)(const unsigned char *mbstr, int len)
Definition: pg_wchar.h:372
mbchar_verifier mbverifychar
Definition: pg_wchar.h:384

References Assert, encoding, IS_HIGHBIT_SET, len, pg_wchar_tbl::mbverifychar, pg_encoding_max_length(), PG_VALID_ENCODING, pg_wchar_table, and report_invalid_encoding().

Referenced by length_in_encoding().

◆ pg_verifymbstr()

◆ pg_wchar2mb()

int pg_wchar2mb ( const pg_wchar from,
char *  to 
)

Definition at line 1001 of file mbutils.c.

1002 {
1003  return pg_wchar_table[DatabaseEncoding->encoding].wchar2mb_with_len(from, (unsigned char *) to, pg_wchar_strlen(from));
1004 }
size_t pg_wchar_strlen(const pg_wchar *str)
Definition: wstrncmp.c:70

References DatabaseEncoding, pg_enc2name::encoding, pg_wchar_strlen(), pg_wchar_table, and pg_wchar_tbl::wchar2mb_with_len.

◆ pg_wchar2mb_with_len()

int pg_wchar2mb_with_len ( const pg_wchar from,
char *  to,
int  len 
)

◆ pg_wchar_strlen()

size_t pg_wchar_strlen ( const pg_wchar str)

Definition at line 70 of file wstrncmp.c.

71 {
72  const pg_wchar *s;
73 
74  for (s = str; *s; ++s)
75  ;
76  return (s - str);
77 }
const char * str

References str.

Referenced by pg_wchar2mb().

◆ pg_wchar_strncmp()

int pg_wchar_strncmp ( const pg_wchar s1,
const pg_wchar s2,
size_t  n 
)

Definition at line 40 of file wstrncmp.c.

41 {
42  if (n == 0)
43  return 0;
44  do
45  {
46  if (*s1 != *s2++)
47  return (*s1 - *(s2 - 1));
48  if (*s1++ == 0)
49  break;
50  } while (--n != 0);
51  return 0;
52 }

References s1, and s2.

◆ PrepareClientEncoding()

int PrepareClientEncoding ( int  encoding)

Definition at line 110 of file mbutils.c.

111 {
112  int current_server_encoding;
113  ListCell *lc;
114 
116  return -1;
117 
118  /* Can't do anything during startup, per notes above */
120  return 0;
121 
122  current_server_encoding = GetDatabaseEncoding();
123 
124  /*
125  * Check for cases that require no conversion function.
126  */
127  if (current_server_encoding == encoding ||
128  current_server_encoding == PG_SQL_ASCII ||
130  return 0;
131 
132  if (IsTransactionState())
133  {
134  /*
135  * If we're in a live transaction, it's safe to access the catalogs,
136  * so look up the functions. We repeat the lookup even if the info is
137  * already cached, so that we can react to changes in the contents of
138  * pg_conversion.
139  */
140  Oid to_server_proc,
141  to_client_proc;
142  ConvProcInfo *convinfo;
143  MemoryContext oldcontext;
144 
145  to_server_proc = FindDefaultConversionProc(encoding,
146  current_server_encoding);
147  if (!OidIsValid(to_server_proc))
148  return -1;
149  to_client_proc = FindDefaultConversionProc(current_server_encoding,
150  encoding);
151  if (!OidIsValid(to_client_proc))
152  return -1;
153 
154  /*
155  * Load the fmgr info into TopMemoryContext (could still fail here)
156  */
158  sizeof(ConvProcInfo));
159  convinfo->s_encoding = current_server_encoding;
160  convinfo->c_encoding = encoding;
161  fmgr_info_cxt(to_server_proc, &convinfo->to_server_info,
163  fmgr_info_cxt(to_client_proc, &convinfo->to_client_info,
165 
166  /* Attach new info to head of list */
168  ConvProcList = lcons(convinfo, ConvProcList);
169  MemoryContextSwitchTo(oldcontext);
170 
171  /*
172  * We cannot yet remove any older entry for the same encoding pair,
173  * since it could still be in use. SetClientEncoding will clean up.
174  */
175 
176  return 0; /* success */
177  }
178  else
179  {
180  /*
181  * If we're not in a live transaction, the only thing we can do is
182  * restore a previous setting using the cache. This covers all
183  * transaction-rollback cases. The only case it might not work for is
184  * trying to change client_encoding on the fly by editing
185  * postgresql.conf and SIGHUP'ing. Which would probably be a stupid
186  * thing to do anyway.
187  */
188  foreach(lc, ConvProcList)
189  {
190  ConvProcInfo *oldinfo = (ConvProcInfo *) lfirst(lc);
191 
192  if (oldinfo->s_encoding == current_server_encoding &&
193  oldinfo->c_encoding == encoding)
194  return 0;
195  }
196 
197  return -1; /* it's not cached, so fail */
198  }
199 }
List * lcons(void *datum, List *list)
Definition: list.c:495
static List * ConvProcList
Definition: mbutils.c:61
#define lfirst(lc)
Definition: pg_list.h:172
MemoryContextSwitchTo(old_ctx)
int s_encoding
Definition: mbutils.c:55
FmgrInfo to_client_info
Definition: mbutils.c:58
int c_encoding
Definition: mbutils.c:56
FmgrInfo to_server_info
Definition: mbutils.c:57

References backend_startup_complete, ConvProcInfo::c_encoding, ConvProcList, encoding, FindDefaultConversionProc(), fmgr_info_cxt(), GetDatabaseEncoding(), IsTransactionState(), lcons(), lfirst, MemoryContextAlloc(), MemoryContextSwitchTo(), OidIsValid, PG_SQL_ASCII, PG_VALID_FE_ENCODING, ConvProcInfo::s_encoding, ConvProcInfo::to_client_info, ConvProcInfo::to_server_info, and TopMemoryContext.

Referenced by check_client_encoding(), and InitializeClientEncoding().

◆ report_invalid_encoding()

void report_invalid_encoding ( int  encoding,
const char *  mbstr,
int  len 
)

Definition at line 1698 of file mbutils.c.

1699 {
1700  int l = pg_encoding_mblen(encoding, mbstr);
1701  char buf[8 * 5 + 1];
1702  char *p = buf;
1703  int j,
1704  jlimit;
1705 
1706  jlimit = Min(l, len);
1707  jlimit = Min(jlimit, 8); /* prevent buffer overrun */
1708 
1709  for (j = 0; j < jlimit; j++)
1710  {
1711  p += sprintf(p, "0x%02x", (unsigned char) mbstr[j]);
1712  if (j < jlimit - 1)
1713  p += sprintf(p, " ");
1714  }
1715 
1716  ereport(ERROR,
1717  (errcode(ERRCODE_CHARACTER_NOT_IN_REPERTOIRE),
1718  errmsg("invalid byte sequence for encoding \"%s\": %s",
1720  buf)));
1721 }
#define Min(x, y)
Definition: c.h:1004
int j
Definition: isn.c:74
static char * buf
Definition: pg_test_fsync.c:73
#define sprintf
Definition: port.h:240

References buf, encoding, ereport, errcode(), errmsg(), ERROR, j, len, Min, name, pg_enc2name_tbl, pg_encoding_mblen(), and sprintf.

Referenced by big52euc_tw(), big52mic(), CopyConversionError(), euc_cn2mic(), euc_jis_20042shift_jis_2004(), euc_jp2mic(), euc_jp2sjis(), euc_kr2mic(), euc_tw2big5(), euc_tw2mic(), iso8859_1_to_utf8(), latin2mic(), latin2mic_with_table(), local2local(), LocalToUtf(), mic2big5(), mic2euc_cn(), mic2euc_jp(), mic2euc_kr(), mic2euc_tw(), mic2latin(), mic2latin_with_table(), mic2sjis(), pg_verify_mbstr(), pg_verify_mbstr_len(), shift_jis_20042euc_jis_2004(), sjis2euc_jp(), sjis2mic(), test_enc_conversion(), utf8_to_iso8859_1(), and UtfToLocal().

◆ report_untranslatable_char()

void report_untranslatable_char ( int  src_encoding,
int  dest_encoding,
const char *  mbstr,
int  len 
)

Definition at line 1730 of file mbutils.c.

1732 {
1733  int l = pg_encoding_mblen(src_encoding, mbstr);
1734  char buf[8 * 5 + 1];
1735  char *p = buf;
1736  int j,
1737  jlimit;
1738 
1739  jlimit = Min(l, len);
1740  jlimit = Min(jlimit, 8); /* prevent buffer overrun */
1741 
1742  for (j = 0; j < jlimit; j++)
1743  {
1744  p += sprintf(p, "0x%02x", (unsigned char) mbstr[j]);
1745  if (j < jlimit - 1)
1746  p += sprintf(p, " ");
1747  }
1748 
1749  ereport(ERROR,
1750  (errcode(ERRCODE_UNTRANSLATABLE_CHARACTER),
1751  errmsg("character with byte sequence %s in encoding \"%s\" has no equivalent in encoding \"%s\"",
1752  buf,
1753  pg_enc2name_tbl[src_encoding].name,
1754  pg_enc2name_tbl[dest_encoding].name)));
1755 }

References buf, ereport, errcode(), errmsg(), ERROR, j, len, Min, name, pg_enc2name_tbl, pg_encoding_mblen(), and sprintf.

Referenced by big52euc_tw(), big52mic(), euc_tw2big5(), latin2mic_with_table(), local2local(), LocalToUtf(), mic2big5(), mic2euc_cn(), mic2euc_jp(), mic2euc_kr(), mic2euc_tw(), mic2latin(), mic2latin_with_table(), mic2sjis(), utf8_to_iso8859_1(), and UtfToLocal().

◆ SetClientEncoding()

int SetClientEncoding ( int  encoding)

Definition at line 208 of file mbutils.c.

209 {
210  int current_server_encoding;
211  bool found;
212  ListCell *lc;
213 
215  return -1;
216 
217  /* Can't do anything during startup, per notes above */
219  {
221  return 0;
222  }
223 
224  current_server_encoding = GetDatabaseEncoding();
225 
226  /*
227  * Check for cases that require no conversion function.
228  */
229  if (current_server_encoding == encoding ||
230  current_server_encoding == PG_SQL_ASCII ||
232  {
234  ToServerConvProc = NULL;
235  ToClientConvProc = NULL;
236  return 0;
237  }
238 
239  /*
240  * Search the cache for the entry previously prepared by
241  * PrepareClientEncoding; if there isn't one, we lose. While at it,
242  * release any duplicate entries so that repeated Prepare/Set cycles don't
243  * leak memory.
244  */
245  found = false;
246  foreach(lc, ConvProcList)
247  {
248  ConvProcInfo *convinfo = (ConvProcInfo *) lfirst(lc);
249 
250  if (convinfo->s_encoding == current_server_encoding &&
251  convinfo->c_encoding == encoding)
252  {
253  if (!found)
254  {
255  /* Found newest entry, so set up */
257  ToServerConvProc = &convinfo->to_server_info;
258  ToClientConvProc = &convinfo->to_client_info;
259  found = true;
260  }
261  else
262  {
263  /* Duplicate entry, release it */
265  pfree(convinfo);
266  }
267  }
268  }
269 
270  if (found)
271  return 0; /* success */
272  else
273  return -1; /* it's not cached, so fail */
274 }
static FmgrInfo * ToServerConvProc
Definition: mbutils.c:67
static FmgrInfo * ToClientConvProc
Definition: mbutils.c:68
void pfree(void *pointer)
Definition: mcxt.c:1521
#define foreach_delete_current(lst, var_or_cell)
Definition: pg_list.h:391

References backend_startup_complete, ConvProcInfo::c_encoding, ClientEncoding, ConvProcList, encoding, foreach_delete_current, GetDatabaseEncoding(), lfirst, pending_client_encoding, pfree(), pg_enc2name_tbl, PG_SQL_ASCII, PG_VALID_FE_ENCODING, ConvProcInfo::s_encoding, ConvProcInfo::to_client_info, ConvProcInfo::to_server_info, ToClientConvProc, and ToServerConvProc.

Referenced by assign_client_encoding(), InitializeClientEncoding(), and ParallelWorkerMain().

◆ SetDatabaseEncoding()

void SetDatabaseEncoding ( int  encoding)

Definition at line 1161 of file mbutils.c.

1162 {
1164  elog(ERROR, "invalid database encoding: %d", encoding);
1165 
1168 }

References Assert, DatabaseEncoding, elog, encoding, pg_enc2name::encoding, ERROR, pg_enc2name_tbl, and PG_VALID_BE_ENCODING.

Referenced by CheckMyDatabase().

◆ SetMessageEncoding()

void SetMessageEncoding ( int  encoding)

Definition at line 1171 of file mbutils.c.

1172 {
1173  /* Some calls happen before we can elog()! */
1175 
1178 }

References Assert, encoding, pg_enc2name::encoding, MessageEncoding, pg_enc2name_tbl, and PG_VALID_ENCODING.

Referenced by pg_perm_setlocale().

◆ surrogate_pair_to_codepoint()

static pg_wchar surrogate_pair_to_codepoint ( pg_wchar  first,
pg_wchar  second 
)
inlinestatic

Definition at line 537 of file pg_wchar.h.

542 {

Referenced by json_lex_string(), str_udeescape(), and unistr().

◆ unicode_to_utf8()

unsigned char * unicode_to_utf8 ( pg_wchar  c,
unsigned char *  utf8string 
)
inlinestatic

Definition at line 575 of file pg_wchar.h.

592 {
593  if (c <= 0x7F)
594  {
595  utf8string[0] = c;
596  }
597  else if (c <= 0x7FF)
598  {
599  utf8string[0] = 0xC0 | ((c >> 6) & 0x1F);
600  utf8string[1] = 0x80 | (c & 0x3F);
601  }

Referenced by convert_case(), json_lex_string(), pg_saslprep(), pg_unicode_to_server(), pg_unicode_to_server_noerror(), pg_wchar2utf_with_len(), and unicode_normalize_func().

◆ unicode_utf8len()

static int unicode_utf8len ( pg_wchar  c)
inlinestatic

Definition at line 607 of file pg_wchar.h.

609  {
610  utf8string[0] = 0xF0 | ((c >> 18) & 0x07);
611  utf8string[1] = 0x80 | ((c >> 12) & 0x3F);
612  utf8string[2] = 0x80 | ((c >> 6) & 0x3F);
613  utf8string[3] = 0x80 | (c & 0x3F);
614  }
615 
616  return utf8string;
617 }

Referenced by convert_case(), and initcap_wbnext().

◆ utf8_to_unicode()

pg_wchar utf8_to_unicode ( const unsigned char *  c)
inlinestatic

Definition at line 549 of file pg_wchar.h.

554 {
555  return ((first & 0x3FF) << 10) + 0x10000 + (second & 0x3FF);
556 }
557 
558 /*
559  * Convert a UTF-8 character to a Unicode code point.
560  * This is a one-character version of pg_utf2wchar_with_len.
561  *
562  * No error checks here, c must point to a long-enough string.
563  */
564 static inline pg_wchar
565 utf8_to_unicode(const unsigned char *c)
566 {
567  if ((*c & 0x80) == 0)
568  return (pg_wchar) c[0];
static pg_wchar utf8_to_unicode(const unsigned char *c)
Definition: pg_wchar.h:549

◆ UtfToLocal()

int UtfToLocal ( const unsigned char *  utf,
int  len,
unsigned char *  iso,
const pg_mb_radix_tree map,
const pg_utf_to_local_combined cmap,
int  cmapsize,
utf_local_conversion_func  conv_func,
int  encoding,
bool  noError 
)

Definition at line 507 of file conv.c.

513 {
514  uint32 iutf;
515  int l;
516  const pg_utf_to_local_combined *cp;
517  const unsigned char *start = utf;
518 
520  ereport(ERROR,
521  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
522  errmsg("invalid encoding number: %d", encoding)));
523 
524  for (; len > 0; len -= l)
525  {
526  unsigned char b1 = 0;
527  unsigned char b2 = 0;
528  unsigned char b3 = 0;
529  unsigned char b4 = 0;
530 
531  /* "break" cases all represent errors */
532  if (*utf == '\0')
533  break;
534 
535  l = pg_utf_mblen(utf);
536  if (len < l)
537  break;
538 
539  if (!pg_utf8_islegal(utf, l))
540  break;
541 
542  if (l == 1)
543  {
544  /* ASCII case is easy, assume it's one-to-one conversion */
545  *iso++ = *utf++;
546  continue;
547  }
548 
549  /* collect coded char of length l */
550  if (l == 2)
551  {
552  b3 = *utf++;
553  b4 = *utf++;
554  }
555  else if (l == 3)
556  {
557  b2 = *utf++;
558  b3 = *utf++;
559  b4 = *utf++;
560  }
561  else if (l == 4)
562  {
563  b1 = *utf++;
564  b2 = *utf++;
565  b3 = *utf++;
566  b4 = *utf++;
567  }
568  else
569  {
570  elog(ERROR, "unsupported character length %d", l);
571  iutf = 0; /* keep compiler quiet */
572  }
573  iutf = (b1 << 24 | b2 << 16 | b3 << 8 | b4);
574 
575  /* First, try with combined map if possible */
576  if (cmap && len > l)
577  {
578  const unsigned char *utf_save = utf;
579  int len_save = len;
580  int l_save = l;
581 
582  /* collect next character, same as above */
583  len -= l;
584 
585  l = pg_utf_mblen(utf);
586  if (len < l)
587  {
588  /* need more data to decide if this is a combined char */
589  utf -= l_save;
590  break;
591  }
592 
593  if (!pg_utf8_islegal(utf, l))
594  {
595  if (!noError)
596  report_invalid_encoding(PG_UTF8, (const char *) utf, len);
597  utf -= l_save;
598  break;
599  }
600 
601  /* We assume ASCII character cannot be in combined map */
602  if (l > 1)
603  {
604  uint32 iutf2;
605  uint32 cutf[2];
606 
607  if (l == 2)
608  {
609  iutf2 = *utf++ << 8;
610  iutf2 |= *utf++;
611  }
612  else if (l == 3)
613  {
614  iutf2 = *utf++ << 16;
615  iutf2 |= *utf++ << 8;
616  iutf2 |= *utf++;
617  }
618  else if (l == 4)
619  {
620  iutf2 = *utf++ << 24;
621  iutf2 |= *utf++ << 16;
622  iutf2 |= *utf++ << 8;
623  iutf2 |= *utf++;
624  }
625  else
626  {
627  elog(ERROR, "unsupported character length %d", l);
628  iutf2 = 0; /* keep compiler quiet */
629  }
630 
631  cutf[0] = iutf;
632  cutf[1] = iutf2;
633 
634  cp = bsearch(cutf, cmap, cmapsize,
636 
637  if (cp)
638  {
639  iso = store_coded_char(iso, cp->code);
640  continue;
641  }
642  }
643 
644  /* fail, so back up to reprocess second character next time */
645  utf = utf_save;
646  len = len_save;
647  l = l_save;
648  }
649 
650  /* Now check ordinary map */
651  if (map)
652  {
653  uint32 converted = pg_mb_radix_conv(map, l, b1, b2, b3, b4);
654 
655  if (converted)
656  {
657  iso = store_coded_char(iso, converted);
658  continue;
659  }
660  }
661 
662  /* if there's a conversion function, try that */
663  if (conv_func)
664  {
665  uint32 converted = (*conv_func) (iutf);
666 
667  if (converted)
668  {
669  iso = store_coded_char(iso, converted);
670  continue;
671  }
672  }
673 
674  /* failed to translate this character */
675  utf -= l;
676  if (noError)
677  break;
679  (const char *) utf, len);
680  }
681 
682  /* if we broke out of loop early, must be invalid input */
683  if (len > 0 && !noError)
684  report_invalid_encoding(PG_UTF8, (const char *) utf, len);
685 
686  *iso = '\0';
687 
688  return utf - start;
689 }
static int compare3(const void *p1, const void *p2)
Definition: conv.c:320
bool pg_utf8_islegal(const unsigned char *source, int length)
Definition: wchar.c:1953

References pg_utf_to_local_combined::code, compare3(), elog, encoding, ereport, errcode(), errmsg(), ERROR, len, pg_mb_radix_conv(), PG_UTF8, pg_utf8_islegal(), pg_utf_mblen, PG_VALID_ENCODING, report_invalid_encoding(), report_untranslatable_char(), start, and store_coded_char().

Referenced by utf8_to_big5(), utf8_to_euc_cn(), utf8_to_euc_jis_2004(), utf8_to_euc_jp(), utf8_to_euc_kr(), utf8_to_euc_tw(), utf8_to_gb18030(), utf8_to_gbk(), utf8_to_iso8859(), utf8_to_johab(), utf8_to_koi8r(), utf8_to_koi8u(), utf8_to_shift_jis_2004(), utf8_to_sjis(), utf8_to_uhc(), and utf8_to_win().

Variable Documentation

◆ pg_enc2gettext_tbl

PGDLLIMPORT const char* pg_enc2gettext_tbl[]
extern

Definition at line 360 of file encnames.c.

◆ pg_enc2name_tbl

◆ pg_wchar_table