1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/LINCSYS/STDIO_T.H	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,114 @@
     1.4 +/*
     1.5 +* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description:
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +
    1.23 +#ifndef _SYS_STDIO_T_H_
    1.24 +#define _SYS_STDIO_T_H_
    1.25 +#ifdef __cplusplus
    1.26 +extern "C" {
    1.27 +#endif
    1.28 +
    1.29 +#include <_ansi.h>
    1.30 +
    1.31 +/**
    1.32 +Stdio buffers.
    1.33 +@publishedAll
    1.34 +@released
    1.35 +*/
    1.36 +struct __sbuf {
    1.37 +	unsigned char *	_base;
    1.38 +	int				_size;
    1.39 +};
    1.40 +
    1.41 +/**
    1.42 +We need fpos_t for the following, but it doesn't have a leading "_",
    1.43 +so we use _fpos_t instead.
    1.44 +@publishedAll
    1.45 +@released
    1.46 +*/
    1.47 +
    1.48 +typedef long _fpos_t;		/* XXX must match off_t in <sys/types.h> */
    1.49 +							/* (and must be `long' for now) */
    1.50 +
    1.51 +/**
    1.52 +Stdio state variables.
    1.53 +
    1.54 +The following always hold:
    1.55 +
    1.56 +if (_flags&(__SLBF|__SWR)) == (__SLBF|__SWR),
    1.57 +	_lbfsize is -_bf._size, else _lbfsize is 0
    1.58 +if _flags&__SRD, _w is 0
    1.59 +	if _flags&__SWR, _r is 0
    1.60 +
    1.61 +This ensures that the getc and putc macros (or inline functions) never
    1.62 +try to write or read from a file that is in `read' or `write' mode.
    1.63 +(Moreover, they can, and do, automatically switch from read mode to
    1.64 +write mode, and back, on "r+" and "w+" files.)
    1.65 +
    1.66 +_lbfsize is used only to make the inline line-buffered output stream
    1.67 +code as compact as possible.
    1.68 +
    1.69 +_ub, _up, and _ur are used when ungetc() pushes back more characters
    1.70 +than fit in the current _bf, or when ungetc() pushes back a character
    1.71 +that does not match the previous one in _bf.  When this happens,
    1.72 +_ub._base becomes non-nil (i.e., a stream has ungetc() data iff
    1.73 +_ub._base!=NULL) and _up and _ur save the current values of _p and _r.
    1.74 +@publishedAll
    1.75 +@released
    1.76 +*/
    1.77 +struct __sFILE {
    1.78 +  unsigned char *_p;			/* current position in (some) buffer */
    1.79 +  int			 _r;			/* read space left for getc() */
    1.80 +  int			 _w;			/* write space left for putc() */
    1.81 +  short			 _flags;		/* flags, below; this FILE is free if 0 */
    1.82 +  short			 _file;			/* fileno, if Unix descriptor, else -1 */
    1.83 +  struct __sbuf	 _bf;			/* the buffer (at least 1 byte, if !NULL) */
    1.84 +  int			 _lbfsize;		/* 0 or -_bf._size, for inline putc */
    1.85 +
    1.86 +  /* operations */
    1.87 +  void *		 _cookie;		/* cookie passed to io functions */
    1.88 +
    1.89 +  int		(*_read) (void * _cookie, char *_buf, int _n);
    1.90 +  int		(*_write)(void * _cookie, const char *_buf, int _n);
    1.91 +  _fpos_t	(*_seek) (void * _cookie, _fpos_t _offset, int _whence);
    1.92 +  int		(*_close)(void * _cookie);
    1.93 +
    1.94 +  /* separate buffer for long sequences of ungetc() */
    1.95 +  struct __sbuf		_ub;		/* ungetc buffer */
    1.96 +  unsigned char *	_up;		/* saved _p when _p is doing ungetc data */
    1.97 +  int				_ur;		/* saved _r when _r is counting ungetc data */
    1.98 +
    1.99 +  /* tricks to meet minimum requirements even when malloc() fails */
   1.100 +  unsigned char		_ubuf[3];	/* guarantee an ungetc() buffer */
   1.101 +  unsigned char		_nbuf[1];	/* guarantee a getc() buffer */
   1.102 +
   1.103 +  /* separate buffer for fgetline() when line crosses buffer boundary */
   1.104 +  struct __sbuf		_lb;		/* buffer for fgetline() */
   1.105 +
   1.106 +  /* Unix stdio files get aligned to block boundaries on fseek() */
   1.107 +  int				_blksize;	/* stat.st_blksize (may be != _bf._size) */
   1.108 +  int				_offset;	/* current lseek offset */
   1.109 +
   1.110 +  struct _reent *	_data;		/* pointer back to re-entrancy context block */
   1.111 +};
   1.112 +
   1.113 +
   1.114 +#ifdef __cplusplus
   1.115 +}
   1.116 +#endif
   1.117 +#endif /* _SYS_STDIO_T_H_ */