getargs.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/*
37 * generate a vector of pointers (arps) to the
38 * substrings in string "s".
39 * Each substring is separated by blanks and/or tabs.
40 *	s	-> string to analyze -- s GETS MODIFIED
41 *	arps	-> array of pointers -- count + 1 pointers
42 *	count	-> max number of fields
43 * returns:
44 *	i	-> # of subfields
45 *	arps[i] = NULL
46 */
47
48static int
49getargs(char *s, char *arps[], int count)
50{
51	int i;
52
53	for (i = 0; i < count; i++) {
54		while (*s == ' ' || *s == '\t')
55			*s++ = '\0';
56		if (*s == '\n')
57			*s = '\0';
58		if (*s == '\0')
59			break;
60		arps[i] = s++;
61		while (*s != '\0' && *s != ' ' && *s != '\t' && *s != '\n')
62			s++;
63	}
64	arps[i] = NULL;
65	return (i);
66}
67
68/*
69 *      bsfix(args) - remove backslashes from args
70 *
71 *      \123 style strings are collapsed into a single character
72 *	\000 gets mapped into \N for further processing downline.
73 *      \ at end of string is removed
74 *	\t gets replaced by a tab
75 *	\n gets replaced by a newline
76 *	\r gets replaced by a carriage return
77 *	\b gets replaced by a backspace
78 *	\s gets replaced by a blank
79 *	any other unknown \ sequence is left intact for further processing
80 *	downline.
81 */
82
83static void
84bsfix(char **args)
85{
86	char *str, *to, *cp;
87	int num;
88
89	for (; *args; args++) {
90		str = *args;
91		for (to = str; *str; str++) {
92			if (*str == '\\') {
93				if (str[1] == '\0')
94					break;
95				switch (*++str) {
96				case '0':
97				case '1':
98				case '2':
99				case '3':
100				case '4':
101				case '5':
102				case '6':
103				case '7':
104					for (num = 0, cp = str;
105							cp - str < 3; cp++) {
106						if ('0' <= *cp && *cp <= '7') {
107							num <<= 3;
108							num += *cp - '0';
109						} else
110						    break;
111					}
112					if (num == 0) {
113						*to++ = '\\';
114						*to++ = 'N';
115					} else
116						*to++ = (char)num;
117					str = cp-1;
118					break;
119
120				case 't':
121					*to++ = '\t';
122					break;
123
124				case 's':
125					*to++ = ' ';
126					break;
127
128				case 'n':
129					*to++ = '\n';
130					break;
131
132				case 'r':
133					*to++ = '\r';
134					break;
135
136				case 'b':
137					*to++ = '\b';
138					break;
139
140				default:
141					*to++ = '\\';
142					*to++ = *str;
143					break;
144				}
145			}
146			else
147				*to++ = *str;
148		}
149		*to = '\0';
150	}
151}
152