strecpy.c revision 1219:f89f56c2d9ac 
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#pragma ident	"%Z%%M%	%I%	%E% SMI"
32
33#include "mt.h"
34#include "uucp.h"
35
36#ifndef SMALL
37/*
38 *	strecpy(output, input, except)
39 *	strccpy copys the input string to the output string expanding
40 *	any non-graphic character with the C escape sequence.
41 *	Escape sequences produced are those defined in "The C Programming
42 *	Language" pages 180-181.
43 *	Characters in the except string will not be expanded.
44 */
45
46static char *
47strecpy(char *pout, char *pin, char *except)
48{
49	unsigned	c;
50	char		*output;
51
52	output = pout;
53	while ((c = *pin++) != 0) {
54		if (!isprint(c) && (!except || !strchr(except, c))) {
55			*pout++ = '\\';
56			switch (c) {
57			case '\n':
58				*pout++ = 'n';
59				continue;
60			case '\t':
61				*pout++ = 't';
62				continue;
63			case '\b':
64				*pout++ = 'b';
65				continue;
66			case '\r':
67				*pout++ = 'r';
68				continue;
69			case '\f':
70				*pout++ = 'f';
71				continue;
72			case '\v':
73				*pout++ = 'v';
74				continue;
75			case '\\':
76				continue;
77			default:
78				sprintf(pout, "%.3o", c);
79				pout += 3;
80				continue;
81			}
82		}
83		if (c == '\\' && (!except || !strchr(except, c)))
84			*pout++ = '\\';
85		*pout++ = (char)c;
86	}
87	*pout = '\0';
88	return (output);
89}
90#endif
91