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/**
* @copyright
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
* @endcopyright
*
* @file svn_ctype.h
* @brief Character classification routines
* @since New in 1.2.
*/
#ifndef SVN_CTYPE_H
#define SVN_CTYPE_H
#include <apr.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/** Table of flags for character classification. */
extern const apr_uint32_t *const svn_ctype_table;
/** Check if @a c is in the character class described by @a flags.
* The @a flags is a bitwise-or combination of @c SVN_CTYPE_*
* constants. Uses #svn_ctype_table.
*/
#define svn_ctype_test(c, flags) \
(0 != (svn_ctype_table[(unsigned char)(c)] & (flags)))
/**
* @defgroup ctype_basic Basic character classification - 7-bit ASCII only
* @{
*/
/* Basic character classes */
#define SVN_CTYPE_CNTRL 0x0001 /**< Control character */
#define SVN_CTYPE_SPACE 0x0002 /**< Whitespace */
#define SVN_CTYPE_DIGIT 0x0004 /**< Decimal digit */
#define SVN_CTYPE_UPPER 0x0008 /**< Uppercase letter */
#define SVN_CTYPE_LOWER 0x0010 /**< Lowercase letter */
#define SVN_CTYPE_PUNCT 0x0020 /**< Punctuation mark */
#define SVN_CTYPE_XALPHA 0x0040 /**< Hexadecimal digits A to F */
#define SVN_CTYPE_ASCII 0x0080 /**< ASCII subset*/
/* Derived character classes */
/** ASCII letter */
#define SVN_CTYPE_ALPHA (SVN_CTYPE_LOWER | SVN_CTYPE_UPPER)
/** ASCII letter or decimal digit */
#define SVN_CTYPE_ALNUM (SVN_CTYPE_ALPHA | SVN_CTYPE_DIGIT)
/** ASCII hexadecimal digit */
#define SVN_CTYPE_XDIGIT (SVN_CTYPE_DIGIT | SVN_CTYPE_XALPHA)
/** Printable ASCII except space */
#define SVN_CTYPE_GRAPH (SVN_CTYPE_PUNCT | SVN_CTYPE_ALNUM)
/** All printable ASCII */
#define SVN_CTYPE_PRINT (SVN_CTYPE_GRAPH | SVN_CTYPE_SPACE)
/** Check if @a c is an ASCII control character. */
#define svn_ctype_iscntrl(c) svn_ctype_test((c), SVN_CTYPE_CNTRL)
/** Check if @a c is an ASCII whitespace character. */
#define svn_ctype_isspace(c) svn_ctype_test((c), SVN_CTYPE_SPACE)
/** Check if @a c is an ASCII digit. */
#define svn_ctype_isdigit(c) svn_ctype_test((c), SVN_CTYPE_DIGIT)
/** Check if @a c is an ASCII uppercase letter. */
#define svn_ctype_isupper(c) svn_ctype_test((c), SVN_CTYPE_UPPER)
/** Check if @a c is an ASCII lowercase letter. */
#define svn_ctype_islower(c) svn_ctype_test((c), SVN_CTYPE_LOWER)
/** Check if @a c is an ASCII punctuation mark. */
#define svn_ctype_ispunct(c) svn_ctype_test((c), SVN_CTYPE_PUNCT)
/** Check if @a c is an ASCII character. */
#define svn_ctype_isascii(c) svn_ctype_test((c), SVN_CTYPE_ASCII)
/** Check if @a c is an ASCII letter. */
#define svn_ctype_isalpha(c) svn_ctype_test((c), SVN_CTYPE_ALPHA)
/** Check if @a c is an ASCII letter or decimal digit. */
#define svn_ctype_isalnum(c) svn_ctype_test((c), SVN_CTYPE_ALNUM)
/** Check if @a c is an ASCII hexadecimal digit. */
#define svn_ctype_isxdigit(c) svn_ctype_test((c), SVN_CTYPE_XDIGIT)
/** Check if @a c is an ASCII graphical (visible printable) character. */
#define svn_ctype_isgraph(c) svn_ctype_test((c), SVN_CTYPE_GRAPH)
/** Check if @a c is an ASCII printable character. */
#define svn_ctype_isprint(c) svn_ctype_test((c), SVN_CTYPE_PRINT)
/** @} */
/**
* @defgroup ctype_extra Extended character classification
* @{
*/
/* Basic extended character classes */
#define SVN_CTYPE_UTF8LEAD 0x0100 /**< UTF-8 multibyte lead byte */
#define SVN_CTYPE_UTF8CONT 0x0200 /**< UTF-8 multibyte non-lead byte */
/* ### TBD
#define SVN_CTYPE_XMLNAME 0x0400
#define SVN_CTYPE_URISAFE 0x0800
*/
/* Derived extended character classes */
/** Part of a UTF-8 multibyte character. */
#define SVN_CTYPE_UTF8MBC (SVN_CTYPE_UTF8LEAD | SVN_CTYPE_UTF8CONT)
/** All valid UTF-8 bytes. */
#define SVN_CTYPE_UTF8 (SVN_CTYPE_ASCII | SVN_CTYPE_UTF8MBC)
/** Check if @a c is a UTF-8 multibyte lead byte. */
#define svn_ctype_isutf8lead(c) svn_ctype_test((c), SVN_CTYPE_UTF8LEAD)
/** Check if @a c is a UTF-8 multibyte continuation (non-lead) byte. */
#define svn_ctype_isutf8cont(c) svn_ctype_test((c), SVN_CTYLE_UTF8CONT)
/** Check if @a c is part of a UTF-8 multibyte character. */
#define svn_ctype_isutf8mbc(c) svn_ctype_test((c), SVN_CTYPE_UTF8MBC)
/** Check if @a c is valid in UTF-8. */
#define svn_ctype_isutf8(c) svn_ctype_test((c), SVN_CTYPE_UTF8)
/** @} */
/**
* @defgroup ctype_ascii ASCII character value constants
* @{
*/
#define SVN_CTYPE_ASCII_MINUS 45 /**< ASCII value of '-' */
#define SVN_CTYPE_ASCII_DOT 46 /**< ASCII value of '.' */
#define SVN_CTYPE_ASCII_COLON 58 /**< ASCII value of ':' */
#define SVN_CTYPE_ASCII_UNDERSCORE 95 /**< ASCII value of '_' */
#define SVN_CTYPE_ASCII_TAB 9 /**< ASCII value of a tab */
#define SVN_CTYPE_ASCII_LINEFEED 10 /**< ASCII value of a line feed */
#define SVN_CTYPE_ASCII_CARRIAGERETURN 13
/**< ASCII value of a carriage return */
#define SVN_CTYPE_ASCII_DELETE 127
/**< ASCII value of a delete character */
/** @} */
/**
* @defgroup ctype_case ASCII-subset case folding
* @{
*/
/**
* Compare two characters @a a and @a b, treating case-equivalent
* unaccented Latin (ASCII subset) letters as equal.
*
* Returns in integer greater than, equal to, or less than 0,
* according to whether @a a is considered greater than, equal to,
* or less than @a b.
*
* @since New in 1.5.
*/
int
svn_ctype_casecmp(int a,
int b);
/** @} */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* SVN_CTYPE_H */
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