ref: a033ac892e17f6c70d6c2e17efbb0ece5384ceb5
dir: /libc/getfields.c/
#include <u.h> #include <libc.h> int getfields(char *str, char **args, int max, int mflag, char *set) { Rune r; int nr, intok, narg; if(max <= 0) return 0; narg = 0; args[narg] = str; if(!mflag) narg++; intok = 0; for(;; str += nr) { nr = chartorune(&r, str); if(r == 0) break; if(utfrune(set, r)) { if(narg >= max) break; *str = 0; intok = 0; args[narg] = str + nr; if(!mflag) narg++; } else { if(!intok && mflag) narg++; intok = 1; } } return narg; }