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/*
* 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,
* and/or 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.
*/
/* No user fns here. Pesch 15apr92. */
#define _DEFAULT_SOURCE
#include <_ansi.h>
#include <stdio.h>
#include <sys/types.h>
#include <fcntl.h>
#include <sys/unistd.h>
#include "local.h"
/*
* Small standard I/O/seek/close functions.
* These maintain the `known seek offset' for seek optimisation.
*/
ssize_t
__sread (
void *cookie,
char *buf,
size_t n)
{
register FILE *fp = (FILE *) cookie;
register ssize_t ret;
#ifdef __SCLE
int oldmode = 0;
if (fp->_flags & __SCLE)
oldmode = setmode (fp->_file, O_BINARY);
#endif
ret = read (fp->_file, buf, n);
#ifdef __SCLE
if (oldmode)
setmode (fp->_file, oldmode);
#endif
/* If the read succeeded, update the current offset. */
if (ret >= 0)
fp->_offset += ret;
else
fp->_flags &= ~__SOFF; /* paranoia */
return ret;
}
/* Dummy function used in sscanf/swscanf. */
ssize_t
__seofread (
void *cookie,
char *buf,
size_t len)
{
(void) cookie;
(void) buf;
(void) len;
return 0;
}
ssize_t
__swrite (
void *cookie,
char const *buf,
size_t n)
{
register FILE *fp = (FILE *) cookie;
ssize_t w;
#ifdef __SCLE
int oldmode=0;
#endif
if (fp->_flags & __SAPP)
lseek (fp->_file, (_off_t) 0, SEEK_END);
fp->_flags &= ~__SOFF; /* in case O_APPEND mode is set */
#ifdef __SCLE
if (fp->_flags & __SCLE)
oldmode = setmode (fp->_file, O_BINARY);
#endif
w = write (fp->_file, buf, n);
#ifdef __SCLE
if (oldmode)
setmode (fp->_file, oldmode);
#endif
return w;
}
_fpos_t
__sseek (
void *cookie,
_fpos_t offset,
int whence)
{
register FILE *fp = (FILE *) cookie;
register _off_t ret;
ret = lseek (fp->_file, (_off_t) offset, whence);
if (ret == -1L)
fp->_flags &= ~__SOFF;
else
{
fp->_flags |= __SOFF;
fp->_offset = ret;
}
return ret;
}
int
__sclose (
void *cookie)
{
FILE *fp = (FILE *) cookie;
return close (fp->_file);
}
#ifdef __SCLE
int
__stextmode (int fd)
{
#ifdef __CYGWIN__
extern int _cygwin_istext_for_stdio (int);
return _cygwin_istext_for_stdio (fd);
#else
return 0;
#endif
}
#endif
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