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/* <ctype.h> replacement macros.

   Copyright (C) 2000, 2001 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] & (unsigned short)(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 */