d092a92533
* safe-ctype.h: Make code work on all targets and not just on
targets where a char is 8 bits.
From-SVN: r38312
101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
/* <ctype.h> replacement macros.
|
|
|
|
Copyright (C) 2000 Free Software Foundation, Inc.
|
|
Contributed by Zack Weinberg <zackw@stanford.edu>.
|
|
|
|
This file is part of the libiberty library.
|
|
Libiberty is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
Libiberty 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with libiberty; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* This is a compatible replacement of the standard C library's <ctype.h>
|
|
with the following properties:
|
|
|
|
- Implements all isxxx() macros required by C99.
|
|
- Also implements some character classes useful when
|
|
parsing C-like languages.
|
|
- Does not change behavior depending on the current locale.
|
|
- Behaves properly for all values in the range of a signed or
|
|
unsigned char.
|
|
|
|
To avoid conflicts, this header defines the isxxx functions in upper
|
|
case, e.g. ISALPHA not isalpha. */
|
|
|
|
#ifndef SAFE_CTYPE_H
|
|
#define SAFE_CTYPE_H
|
|
|
|
#ifdef isalpha
|
|
#error "safe-ctype.h and ctype.h may not be used simultaneously"
|
|
#else
|
|
|
|
/* Categories. */
|
|
|
|
enum {
|
|
/* In C99 */
|
|
_sch_isblank = 0x0001, /* space \t */
|
|
_sch_iscntrl = 0x0002, /* nonprinting characters */
|
|
_sch_isdigit = 0x0004, /* 0-9 */
|
|
_sch_islower = 0x0008, /* a-z */
|
|
_sch_isprint = 0x0010, /* any printing character including ' ' */
|
|
_sch_ispunct = 0x0020, /* all punctuation */
|
|
_sch_isspace = 0x0040, /* space \t \n \r \f \v */
|
|
_sch_isupper = 0x0080, /* A-Z */
|
|
_sch_isxdigit = 0x0100, /* 0-9A-Fa-f */
|
|
|
|
/* Extra categories useful to cpplib. */
|
|
_sch_isidst = 0x0200, /* A-Za-z_ */
|
|
_sch_isvsp = 0x0400, /* \n \r */
|
|
_sch_isnvsp = 0x0800, /* space \t \f \v \0 */
|
|
|
|
/* Combinations of the above. */
|
|
_sch_isalpha = _sch_isupper|_sch_islower, /* A-Za-z */
|
|
_sch_isalnum = _sch_isalpha|_sch_isdigit, /* A-Za-z0-9 */
|
|
_sch_isidnum = _sch_isidst|_sch_isdigit, /* A-Za-z0-9_ */
|
|
_sch_isgraph = _sch_isalnum|_sch_ispunct, /* isprint and not space */
|
|
_sch_iscppsp = _sch_isvsp|_sch_isnvsp /* isspace + \0 */
|
|
};
|
|
|
|
/* Character classification. */
|
|
extern const unsigned short _sch_istable[256];
|
|
|
|
#define _sch_test(c, bit) (_sch_istable[(c) & 0xff] & (bit))
|
|
|
|
#define ISALPHA(c) _sch_test(c, _sch_isalpha)
|
|
#define ISALNUM(c) _sch_test(c, _sch_isalnum)
|
|
#define ISBLANK(c) _sch_test(c, _sch_isblank)
|
|
#define ISCNTRL(c) _sch_test(c, _sch_iscntrl)
|
|
#define ISDIGIT(c) _sch_test(c, _sch_isdigit)
|
|
#define ISGRAPH(c) _sch_test(c, _sch_isgraph)
|
|
#define ISLOWER(c) _sch_test(c, _sch_islower)
|
|
#define ISPRINT(c) _sch_test(c, _sch_isprint)
|
|
#define ISPUNCT(c) _sch_test(c, _sch_ispunct)
|
|
#define ISSPACE(c) _sch_test(c, _sch_isspace)
|
|
#define ISUPPER(c) _sch_test(c, _sch_isupper)
|
|
#define ISXDIGIT(c) _sch_test(c, _sch_isxdigit)
|
|
|
|
#define ISIDNUM(c) _sch_test(c, _sch_isidnum)
|
|
#define ISIDST(c) _sch_test(c, _sch_isidst)
|
|
#define IS_VSPACE(c) _sch_test(c, _sch_isvsp)
|
|
#define IS_NVSPACE(c) _sch_test(c, _sch_isnvsp)
|
|
#define IS_SPACE_OR_NUL(c) _sch_test(c, _sch_iscppsp)
|
|
|
|
/* Character transformation. */
|
|
extern const unsigned char _sch_toupper[256];
|
|
extern const unsigned char _sch_tolower[256];
|
|
#define TOUPPER(c) _sch_toupper[(c) & 0xff]
|
|
#define TOLOWER(c) _sch_tolower[(c) & 0xff]
|
|
|
|
#endif /* no ctype.h */
|
|
#endif /* SAFE_CTYPE_H */
|