scirfmmon/source/charfunc.h

// $Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/winprojs/scirfmmon/source/charfunc.h,v 1.3 2008/12/15 21:10:08 dashley Exp $
//--------------------------------------------------------------------------------
//Copyright 2008 David T. Ashley
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//PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
//IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
//ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
//
//  16. Limitation of Liability.
//
//  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
//WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
//THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
//GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
//USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
//DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
//PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
//EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
//SUCH DAMAGES.
//
//  17. Interpretation of Sections 15 and 16.
//
//  If the disclaimer of warranty and limitation of liability provided
//above cannot be given local legal effect according to their terms,
//reviewing courts shall apply local law that most closely approximates
//an absolute waiver of all civil liability in connection with the
//Program, unless a warranty or assumption of liability accompanies a
//copy of the Program in return for a fee.
//
//                     END OF TERMS AND CONDITIONS
//
//            How to Apply These Terms to Your New Programs
//
//  If you develop a new program, and you want it to be of the greatest
//possible use to the public, the best way to achieve this is to make it
//free software which everyone can redistribute and change under these terms.
//
//  To do so, attach the following notices to the program.  It is safest
//to attach them to the start of each source file to most effectively
//state the exclusion of warranty; and each file should have at least
//the "copyright" line and a pointer to where the full notice is found.
//
//    <one line to give the program's name and a brief idea of what it does.>
//    Copyright (C) <year>  <name of author>
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    This program 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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
//Also add information on how to contact you by electronic and paper mail.
//
//  If the program does terminal interaction, make it output a short
//notice like this when it starts in an interactive mode:
//
//    <program>  Copyright (C) <year>  <name of author>
//    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
//    This is free software, and you are welcome to redistribute it
//    under certain conditions; type `show c' for details.
//
//The hypothetical commands `show w' and `show c' should show the appropriate
//parts of the General Public License.  Of course, your program's commands
//might be different; for a GUI interface, you would use an "about box".
//
//  You should also get your employer (if you work as a programmer) or school,
//if any, to sign a "copyright disclaimer" for the program, if necessary.
//For more information on this, and how to apply and follow the GNU GPL, see
//<http://www.gnu.org/licenses/>.
//
//  The GNU General Public License does not permit incorporating your program
//into proprietary programs.  If your program is a subroutine library, you
//may consider it more useful to permit linking proprietary applications with
//the library.  If this is what you want to do, use the GNU Lesser General
//Public License instead of this License.  But first, please read
//<http://www.gnu.org/philosophy/why-not-lgpl.html>.
//-------------------------------------------------------------------------------------------------
//--------------------------------------------------------------------------------
//This file is part of scirfmmon.
//
//scirfmmon is free software: you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//(at your option) any later version.
//
//scirfmmon 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 General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with scirfmmon (see the file copying.txt).  If not, 
//see <http://www.gnu.org/licenses/>.
//--------------------------------------------------------------------------------
//This module defines functions which operate on characters as a data type.  Most of
//these operations are very primitive.
//
#ifndef CHARFUNC_H_INCLUDED
   #define CHARFUNC_H_INCLUDED

   #ifdef MODULE_CHARFUNC
      #define DECMOD_CHARFUNC
   #else
      #define DECMOD_CHARFUNC extern
   #endif

   //Character classification functions --------------------------
   //
   //!=0 if digit, 0 otherwise.
   DECMOD_CHARFUNC int CHARFUNC_is_digit(char c);
   //
   //!=0 if lower-case letter, 0 otherwise.
   DECMOD_CHARFUNC int CHARFUNC_is_letter_lc(char c);
   //
   //!=0 if upper-case letter, 0 otherwise.
   DECMOD_CHARFUNC int CHARFUNC_is_letter_uc(char c);
   //
   //!=0 if whitespace, 0 otherwise.  Whitespace is defined as space,
   //tab, or newline.
   DECMOD_CHARFUNC int CHARFUNC_is_whitespace(char c);

   //Hexadecimal arithmetic/presentation functions --------------------------
   //
   //Returns the value of a digit (0-9), or -1 if the
   //passed character is not a digit.
   DECMOD_CHARFUNC int CHARFUNC_digit_to_val(char digit);

   //Returns a lower-case character corresponding to the 
   //lowest nibble of the argument.
   DECMOD_CHARFUNC char CHARFUNC_nibble_to_lc_hex_digit(int nibble);

   //Converts a passed integer to 8 hex digits, lower case letters,
   //in reverse order (LSB first), with no terminator.  s may not
   //be null, and caller must provide space for s[0] through s[7].
   //s[8] is not necessary (no terminator is appended.
   DECMOD_CHARFUNC void CHARFUNC_int_to_lc_hex_rev(int arg, char *s);

   //Character case conversion functions --------------------------
   //
   //If the character is a lower-case letter, converts it to an upper-case
   //letter.  All other characters are passed through unchanged.
   DECMOD_CHARFUNC char CHARFUNC_to_upper(char c);

   //If the character is an upper-case letter, converts it to a lower-case
   //letter.  All other characters are passed through unchanged.
   DECMOD_CHARFUNC char CHARFUNC_to_lower(char c);

   //Returns lower-case letter corresponding to integer [0..25].  If out of 
   //range returns '?'.
   DECMOD_CHARFUNC char CHARFUNC_int_to_lower(int arg);

   //Version control functions --------------------------
   DECMOD_CHARFUNC const char *CHARFUNC_cvcinfo(void);
   DECMOD_CHARFUNC const char *CHARFUNC_hvcinfo(void);
   #define CHARFUNC_H_VERSION ("$Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/winprojs/scirfmmon/source/charfunc.h,v 1.3 2008/12/15 21:10:08 dashley Exp $")
#endif


//**************************************************************************
// $Log: charfunc.h,v $
// Revision 1.3  2008/12/15 21:10:08  dashley
// GPL license text added to source code and also to program output.
//
// Revision 1.2  2008/12/13 21:33:43  dashley
// Edits.
//
// Revision 1.1  2008/12/13 19:08:45  dashley
// Initial checkin.
//
//**************************************************************************
// End of $RCSfile: charfunc.h,v $.