282 lines
9.4 KiB
C
282 lines
9.4 KiB
C
/* Copyright (C) 1991,92,93,95,96,97,98,99 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library 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.
|
|
|
|
The GNU C Library 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 the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/*
|
|
* ISO C Standard 4.3: CHARACTER HANDLING <ctype.h>
|
|
*/
|
|
|
|
#ifndef _CTYPE_H
|
|
#define _CTYPE_H 1
|
|
|
|
#include <features.h>
|
|
#include <bits/types.h>
|
|
|
|
__BEGIN_DECLS
|
|
|
|
#ifndef _ISbit
|
|
/* These are all the characteristics of characters.
|
|
If there get to be more than 16 distinct characteristics,
|
|
many things must be changed that use `unsigned short int's.
|
|
|
|
The characteristics are stored always in network byte order (big
|
|
endian). We define the bit value interpretations here dependent on the
|
|
machine's byte order. */
|
|
|
|
# include <endian.h>
|
|
# if __BYTE_ORDER == __BIG_ENDIAN
|
|
# define _ISbit(bit) (1 << (bit))
|
|
# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
|
|
# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
|
|
# endif
|
|
|
|
enum
|
|
{
|
|
_ISupper = _ISbit (0), /* UPPERCASE. */
|
|
_ISlower = _ISbit (1), /* lowercase. */
|
|
_ISalpha = _ISbit (2), /* Alphabetic. */
|
|
_ISdigit = _ISbit (3), /* Numeric. */
|
|
_ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
|
|
_ISspace = _ISbit (5), /* Whitespace. */
|
|
_ISprint = _ISbit (6), /* Printing. */
|
|
_ISgraph = _ISbit (7), /* Graphical. */
|
|
_ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
|
|
_IScntrl = _ISbit (9), /* Control character. */
|
|
_ISpunct = _ISbit (10), /* Punctuation. */
|
|
_ISalnum = _ISbit (11) /* Alphanumeric. */
|
|
};
|
|
#endif /* ! _ISbit */
|
|
|
|
/* These are defined in ctype-info.c.
|
|
The declarations here must match those in localeinfo.h.
|
|
|
|
These point into arrays of 384, so they can be indexed by any `unsigned
|
|
char' value [0,255]; by EOF (-1); or by any `signed char' value
|
|
[-128,-1). ISO C requires that the ctype functions work for `unsigned
|
|
char' values and for EOF; we also support negative `signed char' values
|
|
for broken old programs. The case conversion arrays are of `int's
|
|
rather than `unsigned char's because tolower (EOF) must be EOF, which
|
|
doesn't fit into an `unsigned char'. But today more important is that
|
|
the arrays are also used for multi-byte character sets. */
|
|
extern __const unsigned short int *__ctype_b; /* Characteristics. */
|
|
extern __const __int32_t *__ctype_tolower; /* Case conversions. */
|
|
extern __const __int32_t *__ctype_toupper; /* Case conversions. */
|
|
|
|
#define __isctype(c, type) \
|
|
(__ctype_b[(int) (c)] & (unsigned short int) type)
|
|
|
|
#define __isascii(c) (((c) & ~0x7f) == 0) /* If C is a 7 bit value. */
|
|
#define __toascii(c) ((c) & 0x7f) /* Mask off high bits. */
|
|
|
|
#define __exctype(name) extern int name (int) __THROW
|
|
|
|
/* The following names are all functions:
|
|
int isCHARACTERISTIC(int c);
|
|
which return nonzero iff C has CHARACTERISTIC.
|
|
For the meaning of the characteristic names, see the `enum' above. */
|
|
__exctype (isalnum);
|
|
__exctype (isalpha);
|
|
__exctype (iscntrl);
|
|
__exctype (isdigit);
|
|
__exctype (islower);
|
|
__exctype (isgraph);
|
|
__exctype (isprint);
|
|
__exctype (ispunct);
|
|
__exctype (isspace);
|
|
__exctype (isupper);
|
|
__exctype (isxdigit);
|
|
|
|
#ifdef __USE_GNU
|
|
__exctype (isblank);
|
|
#endif
|
|
|
|
|
|
/* Return the lowercase version of C. */
|
|
extern int tolower (int __c) __THROW;
|
|
|
|
/* Return the uppercase version of C. */
|
|
extern int toupper (int __c) __THROW;
|
|
|
|
|
|
#if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
|
|
|
|
/* Return nonzero iff C is in the ASCII set
|
|
(i.e., is no more than 7 bits wide). */
|
|
extern int isascii (int __c) __THROW;
|
|
|
|
/* Return the part of C that is in the ASCII set
|
|
(i.e., the low-order 7 bits of C). */
|
|
extern int toascii (int __c) __THROW;
|
|
|
|
/* These are the same as `toupper' and `tolower' except that they do not
|
|
check the argument for being in the range of a `char'. */
|
|
__exctype (_toupper);
|
|
__exctype (_tolower);
|
|
#endif /* Use SVID or use misc. */
|
|
|
|
/* This code is needed for the optimized mapping functions. */
|
|
#define __tobody(c, f, a, args) \
|
|
(__extension__ \
|
|
({ int __res; \
|
|
if (sizeof (c) > 1) \
|
|
{ \
|
|
if (__builtin_constant_p (c)) \
|
|
{ \
|
|
int __c = (c); \
|
|
__res = __c < -128 || __c > 255 ? __c : a[__c]; \
|
|
} \
|
|
else \
|
|
__res = f args; \
|
|
} \
|
|
else \
|
|
__res = a[(int) (c)]; \
|
|
__res; }))
|
|
|
|
#ifndef __NO_CTYPE
|
|
# define isalnum(c) __isctype((c), _ISalnum)
|
|
# define isalpha(c) __isctype((c), _ISalpha)
|
|
# define iscntrl(c) __isctype((c), _IScntrl)
|
|
# define isdigit(c) __isctype((c), _ISdigit)
|
|
# define islower(c) __isctype((c), _ISlower)
|
|
# define isgraph(c) __isctype((c), _ISgraph)
|
|
# define isprint(c) __isctype((c), _ISprint)
|
|
# define ispunct(c) __isctype((c), _ISpunct)
|
|
# define isspace(c) __isctype((c), _ISspace)
|
|
# define isupper(c) __isctype((c), _ISupper)
|
|
# define isxdigit(c) __isctype((c), _ISxdigit)
|
|
|
|
# ifdef __USE_GNU
|
|
# define isblank(c) __isctype((c), _ISblank)
|
|
# endif
|
|
|
|
# if defined __OPTIMIZE__ && !defined __OPTIMIZE_SIZE__ \
|
|
&& defined __USE_EXTERN_INLINES
|
|
extern __inline int
|
|
tolower (int __c) __THROW
|
|
{
|
|
return __c >= -128 && __c < 256 ? __ctype_tolower[__c] : __c;
|
|
}
|
|
|
|
extern __inline int
|
|
toupper (int __c) __THROW
|
|
{
|
|
return __c >= -128 && __c < 256 ? __ctype_toupper[__c] : __c;
|
|
}
|
|
# endif
|
|
|
|
# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
|
|
# define tolower(c) __tobody (c, tolower, __ctype_tolower, (c))
|
|
# define toupper(c) __tobody (c, toupper, __ctype_toupper, (c))
|
|
# endif /* Optimizing gcc */
|
|
|
|
# if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
|
|
# define isascii(c) __isascii (c)
|
|
# define toascii(c) __toascii (c)
|
|
|
|
# define _tolower(c) ((int) __ctype_tolower[(int) (c)])
|
|
# define _toupper(c) ((int) __ctype_toupper[(int) (c)])
|
|
# endif
|
|
|
|
#endif /* Not __NO_CTYPE. */
|
|
|
|
|
|
#ifdef __USE_GNU
|
|
/* The concept of one static locale per category is not very well
|
|
thought out. Many applications will need to process its data using
|
|
information from several different locales. Another application is
|
|
the implementation of the internationalization handling in the
|
|
upcoming ISO C++ standard library. To support this another set of
|
|
the functions using locale data exist which have an additional
|
|
argument.
|
|
|
|
Attention: all these functions are *not* standardized in any form.
|
|
This is a proof-of-concept implementation. */
|
|
|
|
/* Structure for reentrant locale using functions. This is an
|
|
(almost) opaque type for the user level programs. */
|
|
# include <xlocale.h>
|
|
|
|
/* These definitions are similar to the ones above but all functions
|
|
take as an argument a handle for the locale which shall be used. */
|
|
# ifdef __OPTIMIZE__
|
|
# define __isctype_l(c, type, locale) \
|
|
((locale)->__ctype_b[(int) (c)] & (unsigned short int) type)
|
|
# endif
|
|
|
|
# define __exctype_l(name) extern int name (int, __locale_t) __THROW
|
|
|
|
/* The following names are all functions:
|
|
int isCHARACTERISTIC(int c, locale_t *locale);
|
|
which return nonzero iff C has CHARACTERISTIC.
|
|
For the meaning of the characteristic names, see the `enum' above. */
|
|
__exctype_l (__isalnum_l);
|
|
__exctype_l (__isalpha_l);
|
|
__exctype_l (__iscntrl_l);
|
|
__exctype_l (__isdigit_l);
|
|
__exctype_l (__islower_l);
|
|
__exctype_l (__isgraph_l);
|
|
__exctype_l (__isprint_l);
|
|
__exctype_l (__ispunct_l);
|
|
__exctype_l (__isspace_l);
|
|
__exctype_l (__isupper_l);
|
|
__exctype_l (__isxdigit_l);
|
|
|
|
__exctype_l (__isblank_l);
|
|
|
|
|
|
/* Return the lowercase version of C in locale L. */
|
|
extern int __tolower_l (int __c, __locale_t __l) __THROW;
|
|
|
|
/* Return the uppercase version of C. */
|
|
extern int __toupper_l (int __c, __locale_t __l) __THROW;
|
|
|
|
# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
|
|
# define __tolower_l(c, locale) \
|
|
__tobody (c, __tolower_l, (locale)->__ctype_tolower, (c, locale))
|
|
# define __toupper_l(c, locale) \
|
|
__tobody (c, __toupper_l, (locale)->__ctype_toupper, (c, locale))
|
|
# endif /* Optimizing gcc */
|
|
|
|
|
|
# ifndef __NO_CTYPE
|
|
# define __isalnum_l(c,l) __isctype_l((c), _ISalnum, (l))
|
|
# define __isalpha_l(c,l) __isctype_l((c), _ISalpha, (l))
|
|
# define __iscntrl_l(c,l) __isctype_l((c), _IScntrl, (l))
|
|
# define __isdigit_l(c,l) __isctype_l((c), _ISdigit, (l))
|
|
# define __islower_l(c,l) __isctype_l((c), _ISlower, (l))
|
|
# define __isgraph_l(c,l) __isctype_l((c), _ISgraph, (l))
|
|
# define __isprint_l(c,l) __isctype_l((c), _ISprint, (l))
|
|
# define __ispunct_l(c,l) __isctype_l((c), _ISpunct, (l))
|
|
# define __isspace_l(c,l) __isctype_l((c), _ISspace, (l))
|
|
# define __isupper_l(c,l) __isctype_l((c), _ISupper, (l))
|
|
# define __isxdigit_l(c,l) __isctype_l((c), _ISxdigit, (l))
|
|
|
|
# define __isblank_l(c,l) __isctype_l((c), _ISblank, (l))
|
|
|
|
# if defined __USE_SVID || defined __USE_MISC || defined __USE_XOPEN
|
|
# define __isascii_l(c,l) __isascii(c)
|
|
# define __toascii_l(c,l) __toascii(c)
|
|
# endif
|
|
|
|
# endif /* Not __NO_CTYPE. */
|
|
|
|
#endif /* Use GNU. */
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* ctype.h */
|