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- #include "lib.h"
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include "sys9.h"
- #include "dir.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 || strchr(qsep, *t)==nil)){
- 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;
- }
- static int
- tokenize(char *s, char **args, int maxargs)
- {
- int nargs;
- for(nargs=0; nargs<maxargs; nargs++){
- while(*s!='\0' && strchr(qsep, *s)!=nil)
- s++;
- if(*s == '\0')
- break;
- args[nargs] = s;
- s = qtoken(s);
- }
- return nargs;
- }
- Waitmsg*
- _WAIT(void)
- {
- int n, l;
- char buf[512], *fld[5];
- Waitmsg *w;
- n = _AWAIT(buf, sizeof buf-1);
- if(n < 0)
- return nil;
- buf[n] = '\0';
- if(tokenize(buf, fld, 5) != 5){
- strcpy(buf, "couldn't parse wait message");
- _ERRSTR(buf, sizeof buf);
- return nil;
- }
- l = strlen(fld[4])+1;
- w = malloc(sizeof(Waitmsg)+l);
- if(w == nil)
- return nil;
- w->pid = atoi(fld[0]);
- w->time[0] = atoi(fld[1]);
- w->time[1] = atoi(fld[2]);
- w->time[2] = atoi(fld[3]);
- w->msg = (char*)&w[1];
- memmove(w->msg, fld[4], l);
- return w;
- }
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