ref: 5e010fd8a82ec3b6552b4002bcd4be0586081e9a
dir: /sys/src/ape/lib/ap/plan9/9wait.c/
#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; }