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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
#ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.1 */
#include <stdio.h>
#include <ctype.h>
/*
* getword - extract one token from the string
* - token delimiter is white space if getall is FALSE
* - token delimiter is ':' or '\0' if getall is TRUE
*/
char *
getword(ptr, size, getall)
register char *ptr; /* pointer to the string to be scanned */
int *size; /* *size = number of characters scanned */
int getall; /* if TRUE, get all char until ':' or '\0' */
{
register char *optr,c;
char quoted();
static char word[BUFSIZ];
int qsize;
*size = 0;
if (!getall) {
/* Skip all white spaces */
while (isspace(*ptr)) {
(*size)++;
ptr++;
}
}
/* Put all characters from here to next white space or ':' or '\0' */
/* into the word, up to the size of the word. */
for (optr= word,*optr='\0';
*ptr != '\0' && *ptr != ':'; ptr++,(*size)++) {
if (!getall) {
if (isspace(*ptr))
break;
}
/* If the character is quoted, analyze it. */
if (*ptr == '\\') {
c = quoted(ptr,&qsize);
(*size) += qsize;
ptr += qsize;
} else c = *ptr;
/* If there is room, add this character to the word. */
if (optr < &word[BUFSIZ] ) *optr++ = c;
}
/* skip trailing blanks if any*/
while (isspace(*ptr)) {
(*size)++;
ptr++;
}
/* Make sure the line is null terminated. */
*optr++ = '\0';
return(word);
}
/* "quoted" takes a quoted character, starting at the quote */
/* character, and returns a single character plus the size of */
/* the quote string. "quoted" recognizes the following as */
/* special, \n,\r,\v,\t,\b,\f as well as the \nnn notation. */
char
quoted(ptr,qsize)
char *ptr;
int *qsize;
{
register char c,*rptr;
register int i;
rptr = ptr;
switch(*++rptr) {
case 'n':
c = '\n';
break;
case 'r':
c = '\r';
break;
case 'v':
c = '\013';
break;
case 'b':
c = '\b';
break;
case 't':
c = '\t';
break;
case 'f':
c = '\f';
break;
case ':':
c = ':';
break;
default:
/* If this is a numeric string, take up to three characters of */
/* it as the value of the quoted character. */
if (*rptr >= '0' && *rptr <= '7') {
for (i=0,c=0; i < 3;i++) {
c = c*8 + (*rptr - '0');
if (*++rptr < '0' || *rptr > '7') break;
}
rptr--;
/* If the character following the '\\' is a NULL, back up the */
/* ptr so that the NULL won't be missed. The sequence */
/* backslash null is essentually illegal. */
} else if (*rptr == '\0') {
c = '\0';
rptr--;
/* In all other cases the quoting does nothing. */
} else c = *rptr;
break;
}
/* Compute the size of the quoted character. */
(*qsize) = rptr - ptr;
return(c);
}
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