| /* |
| http://code.google.com/p/inferno-os/source/browse/libbio/bprint.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 <u.h> |
| #include <libc.h> |
| #include <bio.h> |
| |
| int |
| Bprint(Biobuf *bp, char *fmt, ...) |
| { |
| va_list ap; |
| char *ip, *ep, *out; |
| int n; |
| |
| ep = (char*)bp->ebuf; |
| ip = ep + bp->ocount; |
| va_start(ap, fmt); |
| out = vseprint(ip, ep, fmt, ap); |
| va_end(ap); |
| if(out == nil || out >= ep-5) { |
| Bflush(bp); |
| ip = ep + bp->ocount; |
| va_start(ap, fmt); |
| out = vseprint(ip, ep, fmt, ap); |
| va_end(ap); |
| if(out >= ep-5) |
| return Beof; |
| } |
| n = out-ip; |
| bp->ocount += n; |
| return n; |
| } |