projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 586c39b1 DF |
1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. | |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | */ | |
| 6 | ||
| 2ce81398 DS |
7 | #if defined(LIBC_SCCS) && !defined(lint) |
| 8 | static char sccsid[] = "@(#)fwrite.c 5.2 (Berkeley) %G%"; | |
| 9 | #endif LIBC_SCCS and not lint | |
| 586c39b1 | 10 | |
| 29468241 MK |
11 | #include <stdio.h> |
| 12 | ||
| 13 | fwrite(ptr, size, count, iop) | |
| 14 | register char *ptr; | |
| 15 | unsigned size, count; | |
| 16 | register FILE *iop; | |
| 17 | { | |
| 18 | register int s; | |
| 19 | ||
| 20 | s = size * count; | |
| 6104f3ac | 21 | if (iop->_flag & _IOLBF) |
| 0ece7e53 | 22 | while (s > 0) { |
| 6104f3ac RC |
23 | if (--iop->_cnt > -iop->_bufsiz && *ptr != '\n') |
| 24 | *iop->_ptr++ = *ptr++; | |
| 25 | else if (_flsbuf(*(unsigned char *)ptr++, iop) == EOF) | |
| 26 | break; | |
| 0ece7e53 | 27 | s--; |
| 6104f3ac RC |
28 | } |
| 29 | else while (s > 0) { | |
| 29468241 MK |
30 | if (iop->_cnt < s) { |
| 31 | if (iop->_cnt > 0) { | |
| 32 | bcopy(ptr, iop->_ptr, iop->_cnt); | |
| 33 | ptr += iop->_cnt; | |
| 34 | iop->_ptr += iop->_cnt; | |
| 35 | s -= iop->_cnt; | |
| 36 | } | |
| 6104f3ac | 37 | if (_flsbuf(*(unsigned char *)ptr++, iop) == EOF) |
| 29468241 MK |
38 | break; |
| 39 | s--; | |
| 40 | } | |
| 41 | if (iop->_cnt >= s) { | |
| 42 | bcopy(ptr, iop->_ptr, s); | |
| 43 | iop->_ptr += s; | |
| 44 | iop->_cnt -= s; | |
| 45 | return (count); | |
| 46 | } | |
| 47 | } | |
| a2dc047f | 48 | return (size != 0 ? count - ((s + size - 1) / size) : 0); |
| 29468241 | 49 | } |