1*5331Samw /*
2*5331Samw  * CDDL HEADER START
3*5331Samw  *
4*5331Samw  * The contents of this file are subject to the terms of the
5*5331Samw  * Common Development and Distribution License (the "License").
6*5331Samw  * You may not use this file except in compliance with the License.
7*5331Samw  *
8*5331Samw  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*5331Samw  * or http://www.opensolaris.org/os/licensing.
10*5331Samw  * See the License for the specific language governing permissions
11*5331Samw  * and limitations under the License.
12*5331Samw  *
13*5331Samw  * When distributing Covered Code, include this CDDL HEADER in each
14*5331Samw  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*5331Samw  * If applicable, add the following below this CDDL HEADER, with the
16*5331Samw  * fields enclosed by brackets "[]" replaced with your own identifying
17*5331Samw  * information: Portions Copyright [yyyy] [name of copyright owner]
18*5331Samw  *
19*5331Samw  * CDDL HEADER END
20*5331Samw  */
21*5331Samw /*
22*5331Samw  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23*5331Samw  * Use is subject to license terms.
24*5331Samw  */
25*5331Samw 
26*5331Samw /*
27*5331Samw  * Implementation of some of the string functions.
28*5331Samw  */
29*5331Samw 
30*5331Samw #pragma ident	"%Z%%M%	%I%	%E% SMI"
31*5331Samw 
32*5331Samw #ifdef _KERNEL
33*5331Samw #include <sys/types.h>
34*5331Samw #include <sys/sunddi.h>
35*5331Samw #else
36*5331Samw #include <stdlib.h>
37*5331Samw #include <string.h>
38*5331Samw #include <strings.h>
39*5331Samw #endif
40*5331Samw #include <smbsrv/alloc.h>
41*5331Samw #include <smbsrv/string.h>
42*5331Samw #include <smbsrv/ctype.h>
43*5331Samw 
44*5331Samw 
45*5331Samw /*
46*5331Samw  * strsubst
47*5331Samw  *
48*5331Samw  * Scan a string replacing all occurrences of orgchar with newchar.
49*5331Samw  * Returns a pointer to s, or null of s is null.
50*5331Samw  */
51*5331Samw char *
52*5331Samw strsubst(char *s, char orgchar, char newchar)
53*5331Samw {
54*5331Samw 	char *p = s;
55*5331Samw 
56*5331Samw 	if (p == 0)
57*5331Samw 		return (0);
58*5331Samw 
59*5331Samw 	while (*p) {
60*5331Samw 		if (*p == orgchar)
61*5331Samw 			*p = newchar;
62*5331Samw 		++p;
63*5331Samw 	}
64*5331Samw 
65*5331Samw 	return (s);
66*5331Samw }
67*5331Samw 
68*5331Samw /*
69*5331Samw  * strcanon
70*5331Samw  *
71*5331Samw  * Normalize a string by reducing all the repeated characters in
72*5331Samw  * buf as defined by class. For example;
73*5331Samw  *
74*5331Samw  *		char *buf = strdup("/d1//d2//d3\\\\d4\\\\f1.txt");
75*5331Samw  *		strcanon(buf, "/\\");
76*5331Samw  *
77*5331Samw  * Would result in buf containing the following string:
78*5331Samw  *
79*5331Samw  *		/d1/d2/d3\d4\f1.txt
80*5331Samw  *
81*5331Samw  * This function modifies the contents of buf in place and returns
82*5331Samw  * a pointer to buf.
83*5331Samw  */
84*5331Samw char *
85*5331Samw strcanon(char *buf, const char *class)
86*5331Samw {
87*5331Samw 	char *p = buf;
88*5331Samw 	char *q = buf;
89*5331Samw 	char *r;
90*5331Samw 
91*5331Samw 	while (*p) {
92*5331Samw 		*q++ = *p;
93*5331Samw 
94*5331Samw 		if ((r = strchr(class, *p)) != 0) {
95*5331Samw 			while (*p == *r)
96*5331Samw 				++p;
97*5331Samw 		} else
98*5331Samw 			++p;
99*5331Samw 	}
100*5331Samw 
101*5331Samw 	*q = '\0';
102*5331Samw 	return (buf);
103*5331Samw }
104