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161 lines
4.9 KiB
C
161 lines
4.9 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1998-2022 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/*
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* ldap_pvt_uc.h - Header for Unicode functions.
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* These are meant to be used by the OpenLDAP distribution only.
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* These should be named ldap_pvt_....()
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*/
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#ifndef _LDAP_PVT_UC_H
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#define _LDAP_PVT_UC_H 1
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#include <lber.h> /* get ber_slen_t */
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#include <ac/bytes.h>
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LDAP_BEGIN_DECL
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/*
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* UTF-8 (in utf-8.c)
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*/
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/* UCDATA uses UCS-2 passed in a 4 byte unsigned int */
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typedef ac_uint4 ldap_unicode_t;
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/* Convert a string with csize octets per character to UTF-8 */
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LDAP_F( int ) ldap_ucs_to_utf8s LDAP_P((
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struct berval *ucs, int csize, struct berval *utf8s ));
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/* returns the number of bytes in the UTF-8 string */
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LDAP_F (ber_len_t) ldap_utf8_bytes( const char * );
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/* returns the number of UTF-8 characters in the string */
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LDAP_F (ber_len_t) ldap_utf8_chars( const char * );
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/* returns the length (in bytes) of the UTF-8 character */
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LDAP_F (int) ldap_utf8_offset( const char * );
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/* returns the length (in bytes) indicated by the UTF-8 character */
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LDAP_F (int) ldap_utf8_charlen( const char * );
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/* returns the length (in bytes) indicated by the UTF-8 character
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* also checks that shortest possible encoding was used
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*/
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LDAP_F (int) ldap_utf8_charlen2( const char * );
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/* copies a UTF-8 character and returning number of bytes copied */
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LDAP_F (int) ldap_utf8_copy( char *, const char *);
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/* returns pointer of next UTF-8 character in string */
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LDAP_F (char*) ldap_utf8_next( const char * );
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/* returns pointer of previous UTF-8 character in string */
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LDAP_F (char*) ldap_utf8_prev( const char * );
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/* primitive ctype routines -- not aware of non-ascii characters */
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LDAP_F (int) ldap_utf8_isascii( const char * );
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LDAP_F (int) ldap_utf8_isalpha( const char * );
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LDAP_F (int) ldap_utf8_isalnum( const char * );
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LDAP_F (int) ldap_utf8_isdigit( const char * );
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LDAP_F (int) ldap_utf8_isxdigit( const char * );
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LDAP_F (int) ldap_utf8_isspace( const char * );
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/* span characters not in set, return bytes spanned */
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LDAP_F (ber_len_t) ldap_utf8_strcspn( const char* str, const char *set);
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/* span characters in set, return bytes spanned */
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LDAP_F (ber_len_t) ldap_utf8_strspn( const char* str, const char *set);
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/* return first occurrence of character in string */
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LDAP_F (char *) ldap_utf8_strchr( const char* str, const char *chr);
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/* return first character of set in string */
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LDAP_F (char *) ldap_utf8_strpbrk( const char* str, const char *set);
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/* reentrant tokenizer */
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LDAP_F (char*) ldap_utf8_strtok( char* sp, const char* sep, char **last);
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/* Optimizations */
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LDAP_V (const char) ldap_utf8_lentab[128];
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LDAP_V (const char) ldap_utf8_mintab[32];
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#define LDAP_UTF8_ISASCII(p) ( !(*(const unsigned char *)(p) & 0x80 ) )
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#define LDAP_UTF8_CHARLEN(p) ( LDAP_UTF8_ISASCII(p) \
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? 1 : ldap_utf8_lentab[*(const unsigned char *)(p) ^ 0x80] )
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/* This is like CHARLEN but additionally validates to make sure
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* the char used the shortest possible encoding.
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* 'l' is used to temporarily hold the result of CHARLEN.
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*/
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#define LDAP_UTF8_CHARLEN2(p, l) ( ( ( l = LDAP_UTF8_CHARLEN( p )) < 3 || \
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( ldap_utf8_mintab[*(const unsigned char *)(p) & 0x1f] & (p)[1] ) ) ? \
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l : 0 )
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#define LDAP_UTF8_OFFSET(p) ( LDAP_UTF8_ISASCII(p) \
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? 1 : ldap_utf8_offset((p)) )
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#define LDAP_UTF8_COPY(d,s) ( LDAP_UTF8_ISASCII(s) \
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? (*(d) = *(s), 1) : ldap_utf8_copy((d),(s)) )
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#define LDAP_UTF8_NEXT(p) ( LDAP_UTF8_ISASCII(p) \
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? (char *)(p)+1 : ldap_utf8_next((p)) )
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#define LDAP_UTF8_INCR(p) ((p) = LDAP_UTF8_NEXT(p))
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/* For symmetry */
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#define LDAP_UTF8_PREV(p) (ldap_utf8_prev((p)))
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#define LDAP_UTF8_DECR(p) ((p)=LDAP_UTF8_PREV((p)))
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/* these probably should be renamed */
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LDAP_LUNICODE_F(int) ucstrncmp(
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const ldap_unicode_t *,
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const ldap_unicode_t *,
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ber_len_t );
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LDAP_LUNICODE_F(int) ucstrncasecmp(
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const ldap_unicode_t *,
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const ldap_unicode_t *,
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ber_len_t );
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LDAP_LUNICODE_F(ldap_unicode_t *) ucstrnchr(
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const ldap_unicode_t *,
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ber_len_t,
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ldap_unicode_t );
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LDAP_LUNICODE_F(ldap_unicode_t *) ucstrncasechr(
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const ldap_unicode_t *,
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ber_len_t,
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ldap_unicode_t );
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LDAP_LUNICODE_F(void) ucstr2upper(
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ldap_unicode_t *,
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ber_len_t );
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#define LDAP_UTF8_NOCASEFOLD 0x0U
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#define LDAP_UTF8_CASEFOLD 0x1U
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#define LDAP_UTF8_ARG1NFC 0x2U
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#define LDAP_UTF8_ARG2NFC 0x4U
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#define LDAP_UTF8_APPROX 0x8U
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LDAP_LUNICODE_F(struct berval *) UTF8bvnormalize(
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struct berval *,
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struct berval *,
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unsigned,
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void *memctx );
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LDAP_LUNICODE_F(int) UTF8bvnormcmp(
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struct berval *,
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struct berval *,
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unsigned,
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void *memctx );
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LDAP_END_DECL
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#endif
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