mirror of
https://github.com/cc65/cc65.git
synced 2024-06-26 20:29:34 +00:00
153 lines
4.5 KiB
C
153 lines
4.5 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* chartype.c */
|
|
/* */
|
|
/* Character classification functions */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 2000-2004 Ullrich von Bassewitz */
|
|
/* Römerstrasse 52 */
|
|
/* D-70794 Filderstadt */
|
|
/* EMail: uz@cc65.org */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed or implied */
|
|
/* warranty. In no event will the authors be held liable for any damages */
|
|
/* arising from the use of this software. */
|
|
/* */
|
|
/* Permission is granted to anyone to use this software for any purpose, */
|
|
/* including commercial applications, and to alter it and redistribute it */
|
|
/* freely, subject to the following restrictions: */
|
|
/* */
|
|
/* 1. The origin of this software must not be misrepresented; you must not */
|
|
/* claim that you wrote the original software. If you use this software */
|
|
/* in a product, an acknowledgment in the product documentation would be */
|
|
/* appreciated but is not required. */
|
|
/* 2. Altered source versions must be plainly marked as such, and must not */
|
|
/* be misrepresented as being the original software. */
|
|
/* 3. This notice may not be removed or altered from any source */
|
|
/* distribution. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
#include "chartype.h"
|
|
|
|
|
|
|
|
/* This module contains replacements for functions in ctype.h besides other
|
|
* functions. There is a problem with using ctype.h directly:
|
|
* The parameter must have a value of "unsigned char" or EOF.
|
|
* So on platforms where a char is signed, this may give problems or at
|
|
* least warnings. The wrapper functions below will have an "char" parameter
|
|
* but handle it correctly. They will NOT work for EOF, but this is not a
|
|
* problem, since EOF is always handled separately.
|
|
*/
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* Code */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
int IsAlpha (char C)
|
|
/* Check for a letter */
|
|
{
|
|
return (C >= 'a' && C <= 'z') || (C >= 'A' && C <= 'Z');
|
|
}
|
|
|
|
|
|
|
|
int IsAlNum (char C)
|
|
/* Check for letter or digit */
|
|
{
|
|
return (C >= 'a' && C <= 'z') || (C >= 'A' && C <= 'Z') || (C >= '0' && C <= '9');
|
|
}
|
|
|
|
|
|
|
|
int IsAscii (char C)
|
|
/* Check for an ASCII character */
|
|
{
|
|
return (C & ~0x7F) == 0;
|
|
}
|
|
|
|
|
|
|
|
int IsBlank (char C)
|
|
/* Check for a space or tab */
|
|
{
|
|
return (C == ' ' || C == '\t');
|
|
}
|
|
|
|
|
|
|
|
int IsSpace (char C)
|
|
/* Check for any white space characters */
|
|
{
|
|
return (C == ' ' || C == '\n' || C == '\r' || C == '\t' || C == '\v' || C == '\f');
|
|
}
|
|
|
|
|
|
|
|
int IsDigit (char C)
|
|
/* Check for a digit */
|
|
{
|
|
return (C >= '0' && C <= '9');
|
|
}
|
|
|
|
|
|
|
|
int IsLower (char C)
|
|
/* Check for a lower case char */
|
|
{
|
|
return (C >= 'a' && C <= 'z');
|
|
}
|
|
|
|
|
|
|
|
int IsUpper (char C)
|
|
/* Check for upper case characters */
|
|
{
|
|
return (C >= 'A' && C <= 'Z');
|
|
}
|
|
|
|
|
|
|
|
int IsBDigit (char C)
|
|
/* Check for binary digits (0/1) */
|
|
{
|
|
return (C == '0' || C == '1');
|
|
}
|
|
|
|
|
|
|
|
int IsODigit (char C)
|
|
/* Check for octal digits (0..7) */
|
|
{
|
|
return (C >= '0' && C <= '7');
|
|
}
|
|
|
|
|
|
|
|
int IsXDigit (char C)
|
|
/* Check for hexadecimal digits */
|
|
{
|
|
return (C >= 'a' && C <= 'f') || (C >= 'A' && C <= 'F') || (C >= '0' && C <= '9');
|
|
}
|
|
|
|
|
|
|
|
int IsQuote (char C)
|
|
/* Check for a single or double quote */
|
|
{
|
|
return (C == '"' || C == '\'');
|
|
}
|
|
|
|
|
|
|