| /* |
| * The authors of this software are Rob Pike and Ken Thompson, |
| * with contributions from Mike Burrows and Sean Dorward. |
| * |
| * Copyright (c) 2002-2006 by Lucent Technologies. |
| * Portions Copyright (c) 2004 Google Inc. |
| * |
| * Permission to use, copy, modify, and distribute this software for any |
| * purpose without fee is hereby granted, provided that this entire notice |
| * is included in all copies of any software which is or includes a copy |
| * or modification of this software and in all copies of the supporting |
| * documentation for such software. |
| * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED |
| * WARRANTY. IN PARTICULAR, NEITHER THE AUTHORS NOR LUCENT TECHNOLOGIES |
| * NOR GOOGLE INC MAKE ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING |
| * THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE. |
| */ |
| |
| #include <u.h> |
| #include <libc.h> |
| #include "fmtdef.h" |
| |
| int |
| vsnprint(char *buf, int len, char *fmt, va_list args) |
| { |
| Fmt f; |
| |
| if(len <= 0) |
| return -1; |
| f.runes = 0; |
| f.start = buf; |
| f.to = buf; |
| f.stop = buf + len - 1; |
| f.flush = 0; |
| f.farg = nil; |
| f.nfmt = 0; |
| VA_COPY(f.args,args); |
| fmtlocaleinit(&f, nil, nil, nil); |
| dofmt(&f, fmt); |
| VA_END(f.args); |
| *(char*)f.to = '\0'; |
| return (int)((char*)f.to - buf); |
| } |