diff options
Diffstat (limited to 'newlib/libc/stdio/refill.c')
-rw-r--r-- | newlib/libc/stdio/refill.c | 113 |
1 files changed, 0 insertions, 113 deletions
diff --git a/newlib/libc/stdio/refill.c b/newlib/libc/stdio/refill.c deleted file mode 100644 index ca48a45..0000000 --- a/newlib/libc/stdio/refill.c +++ /dev/null @@ -1,113 +0,0 @@ -/* No user fns here. Pesch 15apr92. */ - -/* - * Copyright (c) 1990 The Regents of the University of California. - * All rights reserved. - * - * Redistribution and use in source and binary forms are permitted - * provided that the above copyright notice and this paragraph are - * duplicated in all such forms and that any documentation, - * advertising materials, and other materials related to such - * distribution and use acknowledge that the software was developed - * by the University of California, Berkeley. The name of the - * University may not be used to endorse or promote products derived - * from this software without specific prior written permission. - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. - */ - -#include <stdio.h> -#include "local.h" -#include <stdlib.h> - -static int -lflush (fp) - FILE *fp; -{ - if ((fp->_flags & (__SLBF | __SWR)) == (__SLBF | __SWR)) - return fflush (fp); - return 0; -} - -/* - * Refill a stdio buffer. - * Return EOF on eof or error, 0 otherwise. - */ - -int -_DEFUN (__srefill, (fp), - register FILE * fp) -{ - /* make sure stdio is set up */ - - CHECK_INIT (fp); - - fp->_r = 0; /* largely a convenience for callers */ - - /* SysV does not make this test; take it out for compatibility */ - if (fp->_flags & __SEOF) - return EOF; - - /* if not already reading, have to be reading and writing */ - if ((fp->_flags & __SRD) == 0) - { - if ((fp->_flags & __SRW) == 0) - return EOF; - /* switch to reading */ - if (fp->_flags & __SWR) - { - if (fflush (fp)) - return EOF; - fp->_flags &= ~__SWR; - fp->_w = 0; - fp->_lbfsize = 0; - } - fp->_flags |= __SRD; - } - else - { - /* - * We were reading. If there is an ungetc buffer, - * we must have been reading from that. Drop it, - * restoring the previous buffer (if any). If there - * is anything in that buffer, return. - */ - if (HASUB (fp)) - { - FREEUB (fp); - if ((fp->_r = fp->_ur) != 0) - { - fp->_p = fp->_up; - return 0; - } - } - } - - if (fp->_bf._base == NULL) - __smakebuf (fp); - - /* - * Before reading from a line buffered or unbuffered file, - * flush all line buffered output files, per the ANSI C - * standard. - */ - - if (fp->_flags & (__SLBF | __SNBF)) - (void) _fwalk (fp->_data, lflush); - fp->_p = fp->_bf._base; - fp->_r = (*fp->_read) (fp->_cookie, (char *) fp->_p, fp->_bf._size); - fp->_flags &= ~__SMOD; /* buffer contents are again pristine */ - if (fp->_r <= 0) - { - if (fp->_r == 0) - fp->_flags |= __SEOF; - else - { - fp->_r = 0; - fp->_flags |= __SERR; - } - return EOF; - } - return 0; -} |