unicode_case.h

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/*-------------------------------------------------------------------------
 *
 * unicode_case.h
 *    Routines for converting character case.
 *
 * These definitions can be used by both frontend and backend code.
 *
 * Copyright (c) 2017-2025, PostgreSQL Global Development Group
 *
 * src/include/common/unicode_case.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef UNICODE_CASE_H
#define UNICODE_CASE_H
 
#include "mb/pg_wchar.h"
 
typedef size_t (*WordBoundaryNext) (void *wbstate);
 
pg_wchar    unicode_lowercase_simple(pg_wchar code);
pg_wchar    unicode_titlecase_simple(pg_wchar code);
pg_wchar    unicode_uppercase_simple(pg_wchar code);
pg_wchar    unicode_casefold_simple(pg_wchar code);
size_t      unicode_strlower(char *dst, size_t dstsize, const char *src,
                             ssize_t srclen, bool full);
size_t      unicode_strtitle(char *dst, size_t dstsize, const char *src,
                             ssize_t srclen, bool full,
                             WordBoundaryNext wbnext, void *wbstate);
size_t      unicode_strupper(char *dst, size_t dstsize, const char *src,
                             ssize_t srclen, bool full);
size_t      unicode_strfold(char *dst, size_t dstsize, const char *src,
                            ssize_t srclen, bool full);
 
#endif                          /* UNICODE_CASE_H */