opensolaris_string.c

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    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  * $FreeBSD$
   22  */
   23 /*
   24  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   25  * Use is subject to license terms.
   26  */
   27 
   28 #include <sys/param.h>
   29 #include <sys/string.h>
   30 #include <sys/kmem.h>
   31 #include <machine/stdarg.h>
   32 
   33 #define IS_DIGIT(c)     ((c) >= '' && (c) <= '9')
   34 
   35 #define IS_ALPHA(c)     \
   36         (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
   37 
   38 char *
   39 strpbrk(const char *s, const char *b)
   40 {
   41         const char *p;
   42 
   43         do {
   44                 for (p = b; *p != '\0' && *p != *s; ++p)
   45                         ;
   46                 if (*p != '\0')
   47                         return ((char *)s);
   48         } while (*s++);
   49 
   50         return (NULL);
   51 }
   52 
   53 /*
   54  * Convert a string into a valid C identifier by replacing invalid
   55  * characters with '_'.  Also makes sure the string is nul-terminated
   56  * and takes up at most n bytes.
   57  */
   58 void
   59 strident_canon(char *s, size_t n)
   60 {
   61         char c;
   62         char *end = s + n - 1;
   63 
   64         if ((c = *s) == 0)
   65                 return;
   66 
   67         if (!IS_ALPHA(c) && c != '_')
   68                 *s = '_';
   69 
   70         while (s < end && ((c = *(++s)) != 0)) {
   71                 if (!IS_ALPHA(c) && !IS_DIGIT(c) && c != '_')
   72                         *s = '_';
   73         }
   74         *s = 0;
   75 }
   76 
   77 /*
   78  * Do not change the length of the returned string; it must be freed
   79  * with strfree().
   80  */
   81 char *
   82 kmem_asprintf(const char *fmt, ...)
   83 {
   84         int size;
   85         va_list adx;
   86         char *buf;
   87 
   88         va_start(adx, fmt);
   89         size = vsnprintf(NULL, 0, fmt, adx) + 1;
   90         va_end(adx);
   91 
   92         buf = kmem_alloc(size, KM_SLEEP);
   93 
   94         va_start(adx, fmt);
   95         (void) vsnprintf(buf, size, fmt, adx);
   96         va_end(adx);
   97 
   98         return (buf);
   99 }
  100 
  101 void
  102 strfree(char *str)
  103 {
  104         ASSERT(str != NULL);
  105         kmem_free(str, strlen(str) + 1);
  106 }

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FreeBSD/Linux Kernel Cross Reference sys/cddl/compat/opensolaris/kern/opensolaris_string.c

FreeBSD/Linux Kernel Cross Reference
sys/cddl/compat/opensolaris/kern/opensolaris_string.c