153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
/* $NetBSD: srt1.c,v 1.2 2003/09/21 06:28:40 matt Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2001 Ben Harris.
|
|
* Copyright (c) 1996
|
|
* Matthias Drochner. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed for the NetBSD Project
|
|
* by Matthias Drochner.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/* Command-line parsing from i386 doscommain.c */
|
|
|
|
#include <lib/libsa/stand.h>
|
|
#include <lib/libkern/libkern.h>
|
|
#include <riscoscalls.h>
|
|
|
|
static int whitespace __P((char));
|
|
|
|
static int
|
|
whitespace(char c)
|
|
{
|
|
if ((c == '\0') || (c == ' ') || (c == '\t')
|
|
|| (c == '\r') || (c == '\n'))
|
|
return (1);
|
|
return (0);
|
|
}
|
|
|
|
enum state {skipping, doing_arg, doing_long_arg};
|
|
|
|
/* build argv/argc, start real main() */
|
|
void __start(void);
|
|
int splitargs(char *, int, char**);
|
|
extern int main(int, char**);
|
|
|
|
extern char edata[], end[];
|
|
|
|
void
|
|
__start(void)
|
|
{
|
|
int argc;
|
|
char *args, **argv;
|
|
|
|
/* Clear BSS */
|
|
memset(edata, 0, end - edata);
|
|
|
|
/* Define heap. */
|
|
setheap(end, (void *)(HIMEM - 0x1000));
|
|
|
|
args = os_get_env(NULL, NULL);
|
|
|
|
argc = splitargs(args, 0, NULL);
|
|
argv = alloc(argc * sizeof(*argv));
|
|
if (argv == NULL)
|
|
panic("alloc of argv failed");
|
|
argc = splitargs(args, 1, argv);
|
|
|
|
/* start real main() */
|
|
os_exit(NULL, main(argc, argv));
|
|
}
|
|
|
|
int
|
|
splitargs(char *args, int really, char **argv)
|
|
{
|
|
int argc, i;
|
|
enum state s;
|
|
|
|
argc = 0;
|
|
s = skipping;
|
|
|
|
for (i = 0; args[i]; i++){
|
|
|
|
if (whitespace(args[i])) {
|
|
if (s == doing_arg) {
|
|
/* end of argument word */
|
|
if (really)
|
|
args[i] = '\0';
|
|
s = skipping;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (args[i] == '"') {
|
|
/* start or end long arg
|
|
* (end only if next char is whitespace)
|
|
* XXX but '" ' cannot be in argument
|
|
*/
|
|
switch (s) {
|
|
case skipping:
|
|
/* next char begins new argument word */
|
|
if (really)
|
|
argv[argc] = &args[i + 1];
|
|
argc++;
|
|
s = doing_long_arg;
|
|
break;
|
|
case doing_long_arg:
|
|
if (whitespace(args[i + 1])) {
|
|
if (really)
|
|
args[i] = '\0';
|
|
s = skipping;
|
|
}
|
|
break;
|
|
case doing_arg:
|
|
/* ignore in the middle of arguments */
|
|
default:
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
/* all other characters */
|
|
if (s == skipping) {
|
|
/* begin new argument word */
|
|
if (really)
|
|
argv[argc] = &args[i];
|
|
argc++;
|
|
s = doing_arg;
|
|
}
|
|
}
|
|
if (s != skipping && really)
|
|
args[i] = '\0'; /* to be sure */
|
|
return argc;
|
|
}
|
|
|
|
void _rtt(void)
|
|
{
|
|
|
|
os_exit(NULL, 0);
|
|
}
|