xref: /illumos-gate/usr/src/common/util/strtolctype.h (revision bcf23f43)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2016 Gary Mills
24  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
25  * Use is subject to license terms.
26  */
27 
28 /*	Copyright (c) 1988 AT&T	*/
29 /*	  All Rights Reserved  	*/
30 
31 #ifndef	_COMMON_UTIL_STRTOLCTYPE_H
32 #define	_COMMON_UTIL_STRTOLCTYPE_H
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 /*
39  * This is a private header file containing a collection of macros that
40  * the strtou?ll? functions in common/util use to test characters.  Which
41  * macros are defined depends on which of _KERNEL or _BOOT are defined.
42  * New code should use the kernel version of ctype.h: <sys/ctype.h>.
43  *
44  * NOTE: These macros are used within several DTrace probe context functions.
45  * They must not be altered to make function calls or perform actions not
46  * safe in probe context.
47  */
48 
49 /*
50  * Cases that define these macros:
51  *   _KERNEL && !_BOOT: Used by kernel functions
52  *   !_KERNEL && _BOOT: Used by dboot_startkern.c for x86 boot
53  * Cases that omit these macros:
54  *   _KERNEL && _BOOT: Used by common/util/strtol.c for SPARC boot library
55  *   !_KERNEL && !_BOOT: Used by strtou?ll? functions in libc
56  */
57 #if	defined(_KERNEL) ^ defined(_BOOT)
58 
59 #define	isalnum(ch)	(isalpha(ch) || isdigit(ch))
60 #define	isalpha(ch)	(isupper(ch) || islower(ch))
61 #define	isdigit(ch)	((ch) >= '0' && (ch) <= '9')
62 #define	islower(ch)	((ch) >= 'a' && (ch) <= 'z')
63 #define	isspace(ch)	(((ch) == ' ') || ((ch) == '\r') || ((ch) == '\n') || \
64 			((ch) == '\t') || ((ch) == '\f'))
65 #define	isupper(ch)	((ch) >= 'A' && (ch) <= 'Z')
66 #define	isxdigit(ch)	(isdigit(ch) || ((ch) >= 'a' && (ch) <= 'f') || \
67 			((ch) >= 'A' && (ch) <= 'F'))
68 
69 #endif	/* _KERNEL ^ _BOOT */
70 
71 /*
72  * The following macros are defined unconditionally.
73  */
74 
75 #define	DIGIT(x)	\
76 	(isdigit(x) ? (x) - '0' : islower(x) ? (x) + 10 - 'a' : (x) + 10 - 'A')
77 
78 #define	MBASE	('z' - 'a' + 1 + 10)
79 
80 /*
81  * The following macro is a version of isalnum() that limits alphabetic
82  * characters to the ranges a-z and A-Z; locale dependent characters will not
83  * return 1.  The members of a-z and A-Z are assumed to be in ascending order
84  * and contiguous.
85  */
86 #define	lisalnum(x)	\
87 	(isdigit(x) || ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z'))
88 
89 #ifdef	__cplusplus
90 }
91 #endif
92 
93 #endif	/* _COMMON_UTIL_STRTOLCTYPE_H */
94