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1 dashley 22 // $Header: /home/dashley/cvsrep/e3ft_gpl01/e3ft_gpl01/winprojs/scirfmmon/source/charfunc.h,v 1.3 2008/12/15 21:10:08 dashley Exp $
2     //--------------------------------------------------------------------------------
3     //Copyright 2008 David T. Ashley
4     //-------------------------------------------------------------------------------------------------
5     //This source code and any program in which it is compiled/used is provided under the GNU GENERAL
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674     //<http://www.gnu.org/licenses/>.
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680     //Public License instead of this License. But first, please read
681     //<http://www.gnu.org/philosophy/why-not-lgpl.html>.
682     //-------------------------------------------------------------------------------------------------
683     //--------------------------------------------------------------------------------
684     //This file is part of scirfmmon.
685     //
686     //scirfmmon is free software: you can redistribute it and/or modify
687     //it under the terms of the GNU General Public License as published by
688     //the Free Software Foundation, either version 3 of the License, or
689     //(at your option) any later version.
690     //
691     //scirfmmon is distributed in the hope that it will be useful,
692     //but WITHOUT ANY WARRANTY; without even the implied warranty of
693     //MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
694     //GNU General Public License for more details.
695     //
696     //You should have received a copy of the GNU General Public License
697     //along with scirfmmon (see the file copying.txt). If not,
698     //see <http://www.gnu.org/licenses/>.
699     //--------------------------------------------------------------------------------
700     //This module defines functions which operate on characters as a data type. Most of
701     //these operations are very primitive.
702     //
703     #ifndef CHARFUNC_H_INCLUDED
704     #define CHARFUNC_H_INCLUDED
705    
706     #ifdef MODULE_CHARFUNC
707     #define DECMOD_CHARFUNC
708     #else
709     #define DECMOD_CHARFUNC extern
710     #endif
711    
712     //Character classification functions --------------------------
713     //
714     //!=0 if digit, 0 otherwise.
715     DECMOD_CHARFUNC int CHARFUNC_is_digit(char c);
716     //
717     //!=0 if lower-case letter, 0 otherwise.
718     DECMOD_CHARFUNC int CHARFUNC_is_letter_lc(char c);
719     //
720     //!=0 if upper-case letter, 0 otherwise.
721     DECMOD_CHARFUNC int CHARFUNC_is_letter_uc(char c);
722     //
723     //!=0 if whitespace, 0 otherwise. Whitespace is defined as space,
724     //tab, or newline.
725     DECMOD_CHARFUNC int CHARFUNC_is_whitespace(char c);
726    
727     //Hexadecimal arithmetic/presentation functions --------------------------
728     //
729     //Returns the value of a digit (0-9), or -1 if the
730     //passed character is not a digit.
731     DECMOD_CHARFUNC int CHARFUNC_digit_to_val(char digit);
732    
733     //Returns a lower-case character corresponding to the
734     //lowest nibble of the argument.
735     DECMOD_CHARFUNC char CHARFUNC_nibble_to_lc_hex_digit(int nibble);
736    
737     //Converts a passed integer to 8 hex digits, lower case letters,
738     //in reverse order (LSB first), with no terminator. s may not
739     //be null, and caller must provide space for s[0] through s[7].
740     //s[8] is not necessary (no terminator is appended.
741     DECMOD_CHARFUNC void CHARFUNC_int_to_lc_hex_rev(int arg, char *s);
742    
743     //Character case conversion functions --------------------------
744     //
745     //If the character is a lower-case letter, converts it to an upper-case
746     //letter. All other characters are passed through unchanged.
747     DECMOD_CHARFUNC char CHARFUNC_to_upper(char c);
748    
749     //If the character is an upper-case letter, converts it to a lower-case
750     //letter. All other characters are passed through unchanged.
751     DECMOD_CHARFUNC char CHARFUNC_to_lower(char c);
752    
753     //Returns lower-case letter corresponding to integer [0..25]. If out of
754     //range returns '?'.
755     DECMOD_CHARFUNC char CHARFUNC_int_to_lower(int arg);
756    
757     //Version control functions --------------------------
758     DECMOD_CHARFUNC const char *CHARFUNC_cvcinfo(void);
759     DECMOD_CHARFUNC const char *CHARFUNC_hvcinfo(void);
760     #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 $")
761     #endif
762    
763    
764     //**************************************************************************
765     // $Log: charfunc.h,v $
766     // Revision 1.3 2008/12/15 21:10:08 dashley
767     // GPL license text added to source code and also to program output.
768     //
769     // Revision 1.2 2008/12/13 21:33:43 dashley
770     // Edits.
771     //
772     // Revision 1.1 2008/12/13 19:08:45 dashley
773     // Initial checkin.
774     //
775     //**************************************************************************
776     // End of $RCSfile: charfunc.h,v $.

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