blob: 9ceac6aba2df1a6aee9334253265680e0364ec2a [file] [log] [blame]
/* Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
* Portions Copyright © 1997-1999 Vita Nuova Limited
* Portions Copyright © 2000-2007 Vita Nuova Holdings Limited
* (www.vitanuova.com)
* Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
*
* Modified for the Akaros operating system:
* Copyright (c) 2013-2014 The Regents of the University of California
* Copyright (c) 2013-2015 Google Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE. */
#include <slab.h>
#include <kmalloc.h>
#include <kref.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <error.h>
#include <cpio.h>
#include <pmap.h>
#include <smp.h>
#include <net/ip.h>
static char qsep[] = " \t\r\n";
static char *qtoken(char *s)
{
int quoting;
char *t;
quoting = 0;
t = s; /* s is output string, t is input string */
while (*t != '\0' && (quoting || /*utfrune */ strchr(qsep, *t) == NULL))
{
if (*t != '\'') {
*s++ = *t++;
continue;
}
/* *t is a quote */
if (!quoting) {
quoting = 1;
t++;
continue;
}
/* quoting and we're on a quote */
if (t[1] != '\'') {
/* end of quoted section; absorb closing quote */
t++;
quoting = 0;
continue;
}
/* doubled quote; fold one quote into two */
t++;
*s++ = *t++;
}
if (*s != '\0') {
*s = '\0';
if (t == s)
t++;
}
return t;
}
int tokenize(char *s, char **args, int maxargs)
{
int nargs;
for (nargs = 0; nargs < maxargs; nargs++) {
while (*s != '\0' && /*utfrune */ strchr(qsep, *s) != NULL)
s++;
if (*s == '\0')
break;
args[nargs] = s;
s = qtoken(s);
}
return nargs;
}