| /* |
| Inferno libkern/getfields.c |
| http://code.google.com/p/inferno-os/source/browse/libkern/getfields.c |
| |
| Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. |
| Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved. |
| |
| Permission is hereby granted, free of charge, to any person obtaining a copy |
| of this software and associated documentation files (the "Software"), to deal |
| in the Software without restriction, including without limitation the rights |
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| copies of the Software, and to permit persons to whom the Software is |
| furnished to do so, subject to the following conditions: |
| |
| The above copyright notice and this permission notice shall be included in |
| all copies or substantial portions of the Software. |
| |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| THE SOFTWARE. |
| */ |
| |
| #include <lib9.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; |
| } |