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/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23/*	  All Rights Reserved  	*/
24
25
26#ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.1	*/
27
28#include        <stdio.h>
29#include	<ctype.h>
30
31/*
32 *	getword	- extract one token from the string
33 *		- token delimiter is white space if getall is FALSE
34 *		- token delimiter is ':' or '\0' if getall is TRUE
35 */
36char *
37getword(ptr, size, getall)
38register char *ptr;	/* pointer to the string to be scanned     */
39int 	 *size;		/* *size = number of characters scanned	   */
40int 	 getall;	/* if TRUE, get all char until ':' or '\0' */
41{
42	register char *optr,c;
43	char quoted();
44	static char word[BUFSIZ];
45	int qsize;
46
47	*size = 0;
48	if (!getall) {
49		/* Skip all white spaces */
50		while (isspace(*ptr)) {
51			(*size)++;
52			ptr++;
53		}
54	}
55
56	/* Put all characters from here to next white space or ':' or '\0' */
57	/* into the word, up to the size of the word. */
58	for (optr= word,*optr='\0';
59		*ptr != '\0' && *ptr != ':'; ptr++,(*size)++) {
60		if (!getall) {
61			if (isspace(*ptr))
62				break;
63		}
64
65		/* If the character is quoted, analyze it. */
66		if (*ptr == '\\') {
67			c = quoted(ptr,&qsize);
68			(*size) += qsize;
69			ptr += qsize;
70		} else c = *ptr;
71
72		/* If there is room, add this character to the word. */
73		if (optr < &word[BUFSIZ] ) *optr++ = c;
74	}
75
76	/* skip trailing blanks if any*/
77	while (isspace(*ptr)) {
78		(*size)++;
79		ptr++;
80	}
81
82	/* Make sure the line is null terminated. */
83	*optr++ = '\0';
84	return(word);
85}
86
87/*	"quoted" takes a quoted character, starting at the quote	*/
88/*	character, and returns a single character plus the size of	*/
89/*	the quote string.  "quoted" recognizes the following as		*/
90/*	special, \n,\r,\v,\t,\b,\f as well as the \nnn notation.	*/
91char
92quoted(ptr,qsize)
93char *ptr;
94int *qsize;
95{
96	register char c,*rptr;
97	register int i;
98
99	rptr = ptr;
100	switch(*++rptr) {
101	case 'n':
102		c = '\n';
103		break;
104	case 'r':
105		c = '\r';
106		break;
107	case 'v':
108		c = '\013';
109		break;
110	case 'b':
111		c = '\b';
112		break;
113	case 't':
114		c = '\t';
115		break;
116	case 'f':
117		c = '\f';
118		break;
119	case ':':
120		c = ':';
121		break;
122	default:
123
124/* If this is a numeric string, take up to three characters of */
125/* it as the value of the quoted character. */
126		if (*rptr >= '0' && *rptr <= '7') {
127			for (i=0,c=0; i < 3;i++) {
128				c = c*8 + (*rptr - '0');
129				if (*++rptr < '0' || *rptr > '7') break;
130			}
131			rptr--;
132
133/* If the character following the '\\' is a NULL, back up the */
134/* ptr so that the NULL won't be missed.  The sequence */
135/* backslash null is essentually illegal. */
136		} else if (*rptr == '\0') {
137			c = '\0';
138			rptr--;
139
140		/* In all other cases the quoting does nothing. */
141		} else c = *rptr;
142		break;
143	}
144
145	/* Compute the size of the quoted character. */
146	(*qsize) = rptr - ptr;
147	return(c);
148}
149
150