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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2012 Milan Jurik. All rights reserved.
*/
#include <stdio.h>
#include <ctype.h>
#define TK_INIT 0
#define TK_TOKEN 1
#define TK_SKIPWHITE 2
#define TK_QUOTED 3
/*
* assumes quoted strings are delimited by white space (i.e sp
* "string" sp). Backslash can be used to quote a quote mark.
* quoted strings will have the quotes stripped.
*/
char *
_sa_get_token(char *string)
{
static char *orig = NULL;
static char *curp;
char *ret;
int state = TK_INIT;
int c;
int quotechar;
if (string != orig || string == NULL) {
orig = string;
curp = string;
if (string == NULL) {
return (NULL);
}
}
ret = curp;
while ((c = *curp) != '\0') {
switch (state) {
case TK_SKIPWHITE:
case TK_INIT:
if (isspace(c)) {
while (*curp && isspace(*curp))
curp++;
ret = curp;
}
if (c == '"' || c == '\'') {
state = TK_QUOTED;
curp++;
ret = curp;
quotechar = c; /* want to match for close */
} else {
state = TK_TOKEN;
}
break;
case TK_TOKEN:
switch (c) {
case '\\':
curp++;
if (*curp) {
curp++;
break;
}
return (ret);
default:
if (*curp == '\0' || isspace(c)) {
*curp++ = '\0';
return (ret);
}
curp++;
break;
}
break;
case TK_QUOTED:
switch (c) {
case '\\':
curp++;
if (*curp) {
curp++;
break;
}
curp++;
break;
default:
if (c == '\0' || c == quotechar) {
*curp++ = '\0';
return (ret);
}
curp++;
break;
}
break;
}
}
return (NULL);
}
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