xref: /illumos-gate/usr/src/lib/libnsl/dial/strecpy.c (revision 08855964b9970604433f7b19dcd71cf5af5e5f14)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 
23 /*
24  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
25  * Use is subject to license terms.
26  */
27 
28 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
29 /*	  All Rights Reserved	*/
30 
31 #include "mt.h"
32 #include "uucp.h"
33 
34 #ifndef SMALL
35 /*
36  *	strecpy(output, input, except)
37  *	strccpy copys the input string to the output string expanding
38  *	any non-graphic character with the C escape sequence.
39  *	Escape sequences produced are those defined in "The C Programming
40  *	Language" pages 180-181.
41  *	Characters in the except string will not be expanded.
42  */
43 
44 static char *
45 strecpy(char *pout, char *pin, char *except)
46 {
47 	unsigned	c;
48 	char		*output;
49 
50 	output = pout;
51 	while ((c = *pin++) != 0) {
52 		if (!isprint(c) && (!except || !strchr(except, c))) {
53 			*pout++ = '\\';
54 			switch (c) {
55 			case '\n':
56 				*pout++ = 'n';
57 				continue;
58 			case '\t':
59 				*pout++ = 't';
60 				continue;
61 			case '\b':
62 				*pout++ = 'b';
63 				continue;
64 			case '\r':
65 				*pout++ = 'r';
66 				continue;
67 			case '\f':
68 				*pout++ = 'f';
69 				continue;
70 			case '\v':
71 				*pout++ = 'v';
72 				continue;
73 			case '\\':
74 				continue;
75 			default:
76 				sprintf(pout, "%.3o", c);
77 				pout += 3;
78 				continue;
79 			}
80 		}
81 		if (c == '\\' && (!except || !strchr(except, c)))
82 			*pout++ = '\\';
83 		*pout++ = (char)c;
84 	}
85 	*pout = '\0';
86 	return (output);
87 }
88 #endif
89