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 2009 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 
  27 /*      Copyright (c) 1988 AT&T     */
  28 /*        All Rights Reserved   */
  29 
  30 #ifndef _COMMON_UTIL_CTYPE_H
  31 #define _COMMON_UTIL_CTYPE_H
  32 
  33 #ifdef  __cplusplus
  34 extern "C" {
  35 #endif
  36 
  37 /*
  38  * This header file contains a collection of macros that the strtou?ll?
  39  * functions in common/util use to test characters.  What we need is a kernel
  40  * version of ctype.h.
  41  *
  42  * NOTE: These macros are used within several DTrace probe context functions.
  43  * They must not be altered to make function calls or perform actions not
  44  * safe in probe context.
  45  */
  46 
  47 #if     defined(_KERNEL) || defined(_BOOT)
  48 
  49 #define isalnum(ch)     (isalpha(ch) || isdigit(ch))
  50 #define isalpha(ch)     (isupper(ch) || islower(ch))
  51 #define isdigit(ch)     ((ch) >= '0' && (ch) <= '9')
  52 #define islower(ch)     ((ch) >= 'a' && (ch) <= 'z')
  53 #define isspace(ch)     (((ch) == ' ') || ((ch) == '\r') || ((ch) == '\n') || \
  54                         ((ch) == '\t') || ((ch) == '\f'))
  55 #define isupper(ch)     ((ch) >= 'A' && (ch) <= 'Z')
  56 #define isxdigit(ch)    (isdigit(ch) || ((ch) >= 'a' && (ch) <= 'f') || \
  57                         ((ch) >= 'A' && (ch) <= 'F'))
  58 
  59 #endif  /* _KERNEL || _BOOT */
  60 
  61 #define DIGIT(x)        \
  62         (isdigit(x) ? (x) - '0' : islower(x) ? (x) + 10 - 'a' : (x) + 10 - 'A')
  63 
  64 #define MBASE   ('z' - 'a' + 1 + 10)
  65 
  66 /*
  67  * The following macro is a version of isalnum() that limits alphabetic
  68  * characters to the ranges a-z and A-Z; locale dependent characters will not
  69  * return 1.  The members of a-z and A-Z are assumed to be in ascending order
  70  * and contiguous.
  71  */
  72 #define lisalnum(x)     \
  73         (isdigit(x) || ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z'))
  74 
  75 #ifdef  __cplusplus
  76 }
  77 #endif
  78 
  79 #endif  /* _COMMON_UTIL_CTYPE_H */