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