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/*
* rtchar.h
*
* Copyright (c) 2000-2004 by Florian Fischer (florianfischer@gmx.de)
* and Martin Trautmann (martintrautmann@gmx.de)
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/
/** \file
* Contains the class Char, which defines static helper functions to determine
* and convert the type of a character.
*/
#ifndef __LRT_CHAR__
#define __LRT_CHAR__
namespace lrt {
/** Defines static helper functions to determine and convert the type of a character.
* Note that in libRT, every character is supposed to have the Latin-1 charset.
*/
class Char
{
public:
/** The maximum radix supported for integer <-> String conversions. (36) */
static const int MAX_RADIX;
/** Detects if a character is whitespace.
* Every spacing and control character is defined as whitespace.
*/
static inline bool isSpace(char ch);
/** Detects if a character is an upper-case letter. */
static inline bool isUpperCase(char ch);
/** Detects if a character is a lower-case letter. */
static inline bool isLowerCase(char ch);
/** Detects if a character is a digit for decimal numbers. */
static inline bool isDigit(char ch);
/** Detects if a character is a digit for numbers represented with radix <tt>radix</tt>. */
static bool isDigit(char ch, int radix);
/** Detects if a character is a letter.
* This function is equivalent to <tt>isLowerCase || isUpperCase</tt>.
*/
static inline bool isLetter(char ch);
/** Returns the lower-case equivalent of a character, if it is an upper-case letter.
* If the given character is not uppercase, it is left unchanged.
*/
static inline char lowerCase(char ch);
/** Returns the upper-case equivalent of a character, if it is a lower-case letter.
* If the given character is not lowercase, it is left unchanged.
*/
static inline char upperCase(char ch);
/** Returns the numeric value of a character.
* The returned value is in range 0..MAX_RADIX, if the character is an English letter or digit.
* If the character is not numerically representable, results are undefined.
*/
static inline int numericValue(char ch);
/** Returns the character representing the given number.
* Note that the given number is not positive and smaller than MAX_RADIX, results are undefined.
*/
static inline char charValue(int num);
private:
Char();
~Char();
};
} // namespace
#include "rtchar.inline.cpp"
#endif
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