jehanne/sys/src/lib/jehanne/port/getfields.c

47 lines
958 B
C

/*
* This file is part of the UCB release of Plan 9. It is subject to the license
* terms in the LICENSE file found in the top-level directory of this
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
* part of the UCB release of Plan 9, including this file, may be copied,
* modified, propagated, or distributed except according to the terms contained
* in the LICENSE file.
*/
#include <u.h>
#include <libc.h>
int
jehanne_getfields(char *str, char **args, int max, int mflag, const 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 = jehanne_chartorune(&r, str);
if(r == 0)
break;
if(jehanne_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;
}