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#include "lib.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "sys9.h"
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#include "dir.h"
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static char qsep[] = " \t\r\n";
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static char*
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qtoken(char *s)
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{
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	int quoting;
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	char *t;
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	quoting = 0;
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	t = s;	/* s is output string, t is input string */
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	while(*t!='\0' && (quoting || strchr(qsep, *t)==nil)){
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		if(*t != '\''){
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			*s++ = *t++;
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			continue;
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		}
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		/* *t is a quote */
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		if(!quoting){
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			quoting = 1;
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			t++;
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			continue;
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		}
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		/* quoting and we're on a quote */
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		if(t[1] != '\''){
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			/* end of quoted section; absorb closing quote */
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			t++;
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			quoting = 0;
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			continue;
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		}
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		/* doubled quote; fold one quote into two */
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		t++;
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		*s++ = *t++;
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	}
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	if(*s != '\0'){
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		*s = '\0';
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		if(t == s)
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			t++;
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	}
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	return t;
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}
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static int
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tokenize(char *s, char **args, int maxargs)
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{
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	int nargs;
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	for(nargs=0; nargs<maxargs; nargs++){
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		while(*s!='\0' && strchr(qsep, *s)!=nil)
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			s++;
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		if(*s == '\0')
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			break;
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		args[nargs] = s;
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		s = qtoken(s);
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	}
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	return nargs;
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}
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Waitmsg*
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_WAIT(void)
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{
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	int n, l;
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	char buf[512], *fld[5];
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	Waitmsg *w;
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	n = _AWAIT(buf, sizeof buf-1);
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	if(n < 0)
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		return nil;
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	buf[n] = '\0';
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	if(tokenize(buf, fld, 5) != 5){
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		strcpy(buf, "couldn't parse wait message");
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		_ERRSTR(buf, sizeof buf);
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		return nil;
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	}
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	l = strlen(fld[4])+1;
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	w = malloc(sizeof(Waitmsg)+l);
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	if(w == nil)
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		return nil;
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	w->pid = atoi(fld[0]);
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	w->time[0] = atoi(fld[1]);
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	w->time[1] = atoi(fld[2]);
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	w->time[2] = atoi(fld[3]);
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	w->msg = (char*)&w[1];
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	memmove(w->msg, fld[4], l);
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	return w;
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}
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