File: ctype.h

package info (click to toggle)
glibc 2.19-18+deb8u7
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports
  • size: 204,748 kB
  • sloc: ansic: 970,427; asm: 241,207; sh: 10,069; makefile: 8,476; cpp: 3,595; perl: 2,077; pascal: 1,839; awk: 1,704; yacc: 317; sed: 73
file content (349 lines) | stat: -rw-r--r-- 11,748 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
/* Copyright (C) 1991-2014 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

/*
 *	ISO C99 Standard 7.4: 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.

   In the thread-specific locale model (see `uselocale' in <locale.h>)
   we cannot use global variables for these as was done in the past.
   Instead, the following accessor functions return the address of
   each variable, which is local to the current thread if multithreaded.

   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_loc (void)
     __THROW __attribute__ ((__const__));
extern const __int32_t **__ctype_tolower_loc (void)
     __THROW __attribute__ ((__const__));
extern const __int32_t **__ctype_toupper_loc (void)
     __THROW __attribute__ ((__const__));


#ifndef __cplusplus
# define __isctype(c, type) \
  ((*__ctype_b_loc ())[(int) (c)] & (unsigned short int) type)
#elif defined __USE_EXTERN_INLINES
# define __isctype_f(type) \
  __extern_inline int							      \
  is##type (int __c) __THROW						      \
  {									      \
    return (*__ctype_b_loc ())[(int) (__c)] & (unsigned short int) _IS##type; \
  }
#endif

#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

__BEGIN_NAMESPACE_STD

/* 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);


/* Return the lowercase version of C.  */
extern int tolower (int __c) __THROW;

/* Return the uppercase version of C.  */
extern int toupper (int __c) __THROW;

__END_NAMESPACE_STD


/* ISO C99 introduced one new function.  */
#ifdef	__USE_ISOC99
__BEGIN_NAMESPACE_C99

__exctype (isblank);

__END_NAMESPACE_C99
#endif

#ifdef __USE_GNU
/* Test C for a set of character classes according to MASK.  */
extern int isctype (int __c, int __mask) __THROW;
#endif

#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; }))

#if !defined __NO_CTYPE
# ifdef __isctype_f
__isctype_f (alnum)
__isctype_f (alpha)
__isctype_f (cntrl)
__isctype_f (digit)
__isctype_f (lower)
__isctype_f (graph)
__isctype_f (print)
__isctype_f (punct)
__isctype_f (space)
__isctype_f (upper)
__isctype_f (xdigit)
#  ifdef __USE_ISOC99
__isctype_f (blank)
#  endif
# elif defined __isctype
# 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_ISOC99
#   define isblank(c)	__isctype((c), _ISblank)
#  endif
# endif

# ifdef __USE_EXTERN_INLINES
__extern_inline int
__NTH (tolower (int __c))
{
  return __c >= -128 && __c < 256 ? (*__ctype_tolower_loc ())[__c] : __c;
}

__extern_inline int
__NTH (toupper (int __c))
{
  return __c >= -128 && __c < 256 ? (*__ctype_toupper_loc ())[__c] : __c;
}
# endif

# if __GNUC__ >= 2 && defined __OPTIMIZE__ && !defined __cplusplus
#  define tolower(c)	__tobody (c, tolower, *__ctype_tolower_loc (), (c))
#  define toupper(c)	__tobody (c, toupper, *__ctype_toupper_loc (), (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_loc ())[(int) (c)])
#  define _toupper(c)	((int) (*__ctype_toupper_loc ())[(int) (c)])
# endif

#endif /* Not __NO_CTYPE.  */


#ifdef __USE_XOPEN2K8
/* 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.  */
#  define __isctype_l(c, type, locale) \
  ((locale)->__ctype_b[(int) (c)] & (unsigned short int) type)

# 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;
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;
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))
#  define tolower_l(c, locale)	__tolower_l ((c), (locale))
#  define toupper_l(c, locale)	__toupper_l ((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
#   define __isascii_l(c,l)	((l), __isascii (c))
#   define __toascii_l(c,l)	((l), __toascii (c))
#  endif

#  define isalnum_l(c,l)	__isalnum_l ((c), (l))
#  define isalpha_l(c,l)	__isalpha_l ((c), (l))
#  define iscntrl_l(c,l)	__iscntrl_l ((c), (l))
#  define isdigit_l(c,l)	__isdigit_l ((c), (l))
#  define islower_l(c,l)	__islower_l ((c), (l))
#  define isgraph_l(c,l)	__isgraph_l ((c), (l))
#  define isprint_l(c,l)	__isprint_l ((c), (l))
#  define ispunct_l(c,l)	__ispunct_l ((c), (l))
#  define isspace_l(c,l)	__isspace_l ((c), (l))
#  define isupper_l(c,l)	__isupper_l ((c), (l))
#  define isxdigit_l(c,l)	__isxdigit_l ((c), (l))

#  define isblank_l(c,l)	__isblank_l ((c), (l))

#  if defined __USE_SVID || defined __USE_MISC
#   define isascii_l(c,l)	__isascii_l ((c), (l))
#   define toascii_l(c,l)	__toascii_l ((c), (l))
#  endif

# endif /* Not __NO_CTYPE.  */

#endif /* Use POSIX 2008.  */

__END_DECLS

#endif /* ctype.h  */