WCharacter.h

/*
 WCharacter.h - Character utility functions for Wiring & Arduino
 Copyright (c) 2010 Hernando Barragan.  All right reserved.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef Character_h
#define Character_h

#include <ctype.h>

#ifdef __cplusplus
extern "C"
{
#endif

// WCharacter.h prototypes
#if defined(__GNUC__)
  inline boolean isAlphaNumeric(int c) __attribute__((always_inline));
  inline boolean isAlpha(int c) __attribute__((always_inline));
  inline boolean isAscii(int c) __attribute__((always_inline));
  inline boolean isWhitespace(int c) __attribute__((always_inline));
  inline boolean isControl(int c) __attribute__((always_inline));
  inline boolean isDigit(int c) __attribute__((always_inline));
  inline boolean isGraph(int c) __attribute__((always_inline));
  inline boolean isLowerCase(int c) __attribute__((always_inline));
  inline boolean isPrintable(int c) __attribute__((always_inline));
  inline boolean isPunct(int c) __attribute__((always_inline));
  inline boolean isSpace(int c) __attribute__((always_inline));
  inline boolean isUpperCase(int c) __attribute__((always_inline));
  inline boolean isHexadecimalDigit(int c) __attribute__((always_inline));
  inline int toAscii(int c) __attribute__((always_inline));
  inline int toLowerCase(int c) __attribute__((always_inline));
  inline int toUpperCase(int c) __attribute__((always_inline));
#elif defined(__ICCARM__)
#endif

  // Checks for an alphanumeric character.
  // It is equivalent to (isalpha(c) || isdigit(c)).
  inline boolean isAlphaNumeric(int c)
  {
    return (isalnum(c) == 0 ? false : true);
  }

  // Checks for an alphabetic character.
  // It is equivalent to (isupper(c) || islower(c)).
  inline boolean isAlpha(int c)
  {
    return (isalpha(c) == 0 ? false : true);
  }

  // Checks whether c is a 7-bit unsigned char value
  // that fits into the ASCII character set.
  inline boolean isAscii(int c)
  {
    /*  return ( isascii(c) == 0 ? false : true); */
    return ((c & ~0x7f) != 0 ? false : true);
  }

  // Checks for a blank character, that is, a space or a tab.
  inline boolean isWhitespace(int c)
  {
    return (isblank(c) == 0 ? false : true);
  }

  // Checks for a control character.
  inline boolean isControl(int c)
  {
    return (iscntrl(c) == 0 ? false : true);
  }

  // Checks for a digit (0 through 9).
  inline boolean isDigit(int c)
  {
    return (isdigit(c) == 0 ? false : true);
  }

  // Checks for any printable character except space.
  inline boolean isGraph(int c)
  {
    return (isgraph(c) == 0 ? false : true);
  }

  // Checks for a lower-case character.
  inline boolean isLowerCase(int c)
  {
    return (islower(c) == 0 ? false : true);
  }

  // Checks for any printable character including space.
  inline boolean isPrintable(int c)
  {
    return (isprint(c) == 0 ? false : true);
  }

  // Checks for any printable character which is not a space
  // or an alphanumeric character.
  inline boolean isPunct(int c)
  {
    return (ispunct(c) == 0 ? false : true);
  }

  // Checks for white-space characters. For the avr-libc library,
  // these are: space, formfeed ('\f'), newline ('\n'), carriage
  // return ('\r'), horizontal tab ('\t'), and vertical tab ('\v').
  inline boolean isSpace(int c)
  {
    return (isspace(c) == 0 ? false : true);
  }

  // Checks for an uppercase letter.
  inline boolean isUpperCase(int c)
  {
    return (isupper(c) == 0 ? false : true);
  }

  // Checks for a hexadecimal digits, i.e. one of 0 1 2 3 4 5 6 7
  // 8 9 a b c d e f A B C D E F.
  inline boolean isHexadecimalDigit(int c)
  {
    return (isxdigit(c) == 0 ? false : true);
  }

  // Converts c to a 7-bit unsigned char value that fits into the
  // ASCII character set, by clearing the high-order bits.
  inline int toAscii(int c)
  {
    /*  return toascii (c); */
    return (c & 0x7f);
  }

  // Warning:
  // Many people will be unhappy if you use this function.
  // This function will convert accented letters into random
  // characters.

  // Converts the letter c to lower case, if possible.
  inline int toLowerCase(int c)
  {
    return tolower(c);
  }

  // Converts the letter c to upper case, if possible.
  inline int toUpperCase(int c)
  {
    return toupper(c);
  }

#ifdef __cplusplus
}
#endif

#endif