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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 /*
     22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 /*
     27  * Implementation of some of the string functions.
     28  */
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #ifdef _KERNEL
     33 #include <sys/types.h>
     34 #include <sys/sunddi.h>
     35 #else
     36 #include <stdlib.h>
     37 #include <string.h>
     38 #include <strings.h>
     39 #endif
     40 #include <smbsrv/string.h>
     41 #include <smbsrv/ctype.h>
     42 
     43 
     44 /*
     45  * strsubst
     46  *
     47  * Scan a string replacing all occurrences of orgchar with newchar.
     48  * Returns a pointer to s, or null of s is null.
     49  */
     50 char *
     51 strsubst(char *s, char orgchar, char newchar)
     52 {
     53 	char *p = s;
     54 
     55 	if (p == 0)
     56 		return (0);
     57 
     58 	while (*p) {
     59 		if (*p == orgchar)
     60 			*p = newchar;
     61 		++p;
     62 	}
     63 
     64 	return (s);
     65 }
     66 
     67 /*
     68  * strcanon
     69  *
     70  * Normalize a string by reducing all the repeated characters in
     71  * buf as defined by class. For example;
     72  *
     73  *		char *buf = strdup("/d1//d2//d3\\\\d4\\\\f1.txt");
     74  *		strcanon(buf, "/\\");
     75  *
     76  * Would result in buf containing the following string:
     77  *
     78  *		/d1/d2/d3\d4\f1.txt
     79  *
     80  * This function modifies the contents of buf in place and returns
     81  * a pointer to buf.
     82  */
     83 char *
     84 strcanon(char *buf, const char *class)
     85 {
     86 	char *p = buf;
     87 	char *q = buf;
     88 	char *r;
     89 
     90 	while (*p) {
     91 		*q++ = *p;
     92 
     93 		if ((r = strchr(class, *p)) != 0) {
     94 			while (*p == *r)
     95 				++p;
     96 		} else
     97 			++p;
     98 	}
     99 
    100 	*q = '\0';
    101 	return (buf);
    102 }
    103