/*-------------------------------------------------------------------------
*
* unicode_category . h
* Routines for determining the category of Unicode characters .
*
* These definitions can be used by both frontend and backend code .
*
* Copyright ( c ) 2017 - 2025 , PostgreSQL Global Development Group
*
* src / include / common / unicode_category . h
*
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*/
#ifndef UNICODE_CATEGORY_H
#define UNICODE_CATEGORY_H
#include "mb/pg_wchar.h"
/*
* Unicode General Category Values
*
* See : https : //www.unicode.org/reports/tr44/#General_Category_Values
*
* The Unicode stability policy guarantees : " The enumeration of
* General_Category property values is fixed . No new values will be
* added " . See : https : //www.unicode.org/policies/stability_policy.html
*
* Numeric values chosen to match corresponding ICU UCharCategory .
*/
typedef enum pg_unicode_category
{
PG_U_UNASSIGNED = 0 , /* Cn */
PG_U_UPPERCASE_LETTER = 1 , /* Lu */
PG_U_LOWERCASE_LETTER = 2 , /* Ll */
PG_U_TITLECASE_LETTER = 3 , /* Lt */
PG_U_MODIFIER_LETTER = 4 , /* Lm */
PG_U_OTHER_LETTER = 5 , /* Lo */
PG_U_NONSPACING_MARK = 6 , /* Mn */
PG_U_ENCLOSING_MARK = 7 , /* Me */
PG_U_SPACING_MARK = 8 , /* Mc */
PG_U_DECIMAL_NUMBER = 9 , /* Nd */
PG_U_LETTER_NUMBER = 10 , /* Nl */
PG_U_OTHER_NUMBER = 11 , /* No */
PG_U_SPACE_SEPARATOR = 12 , /* Zs */
PG_U_LINE_SEPARATOR = 13 , /* Zl */
PG_U_PARAGRAPH_SEPARATOR = 14 , /* Zp */
PG_U_CONTROL = 15 , /* Cc */
PG_U_FORMAT = 16 , /* Cf */
PG_U_PRIVATE_USE = 17 , /* Co */
PG_U_SURROGATE = 18 , /* Cs */
PG_U_DASH_PUNCTUATION = 19 , /* Pd */
PG_U_OPEN_PUNCTUATION = 20 , /* Ps */
PG_U_CLOSE_PUNCTUATION = 21 , /* Pe */
PG_U_CONNECTOR_PUNCTUATION = 22 , /* Pc */
PG_U_OTHER_PUNCTUATION = 23 , /* Po */
PG_U_MATH_SYMBOL = 24 , /* Sm */
PG_U_CURRENCY_SYMBOL = 25 , /* Sc */
PG_U_MODIFIER_SYMBOL = 26 , /* Sk */
PG_U_OTHER_SYMBOL = 27 , /* So */
PG_U_INITIAL_PUNCTUATION = 28 , /* Pi */
PG_U_FINAL_PUNCTUATION = 29 /* Pf */
} pg_unicode_category;
extern pg_unicode_category unicode_category(pg_wchar code);
extern const char *unicode_category_string(pg_unicode_category category);
extern const char *unicode_category_abbrev(pg_unicode_category category);
extern bool pg_u_prop_alphabetic(pg_wchar code);
extern bool pg_u_prop_lowercase(pg_wchar code);
extern bool pg_u_prop_uppercase(pg_wchar code);
extern bool pg_u_prop_cased(pg_wchar code);
extern bool pg_u_prop_case_ignorable(pg_wchar code);
extern bool pg_u_prop_white_space(pg_wchar code);
extern bool pg_u_prop_hex_digit(pg_wchar code);
extern bool pg_u_prop_join_control(pg_wchar code);
extern bool pg_u_isdigit(pg_wchar code, bool posix);
extern bool pg_u_isalpha(pg_wchar code);
extern bool pg_u_isalnum(pg_wchar code, bool posix);
extern bool pg_u_isword(pg_wchar code);
extern bool pg_u_isupper(pg_wchar code);
extern bool pg_u_islower(pg_wchar code);
extern bool pg_u_isblank(pg_wchar code);
extern bool pg_u_iscntrl(pg_wchar code);
extern bool pg_u_isgraph(pg_wchar code);
extern bool pg_u_isprint(pg_wchar code);
extern bool pg_u_ispunct(pg_wchar code, bool posix);
extern bool pg_u_isspace(pg_wchar code);
extern bool pg_u_isxdigit(pg_wchar code, bool posix);
#endif /* UNICODE_CATEGORY_H */
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