sl@0: /* LOCAL.H
sl@0:  * 
sl@0:  * Portions Copyright (c) 1990-1999 Nokia Corporation and/or its subsidiary(-ies).
sl@0:  * All rights reserved.
sl@0:  */
sl@0: 
sl@0: /*
sl@0:  * Copyright (c) 1990 The Regents of the University of California.
sl@0:  * All rights reserved.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms are permitted
sl@0:  * provided that the above copyright notice and this paragraph are
sl@0:  * duplicated in all such forms and that any documentation,
sl@0:  * advertising materials, and other materials related to such
sl@0:  * distribution and use acknowledge that the software was developed
sl@0:  * by the University of California, Berkeley.  The name of the
sl@0:  * University may not be used to endorse or promote products derived
sl@0:  * from this software without specific prior written permission.
sl@0:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
sl@0:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
sl@0:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
sl@0:  *
sl@0:  *	%W% (UofMD/Berkeley) %G%
sl@0:  */
sl@0: 
sl@0: /*
sl@0:  * Information local to this implementation of stdio,
sl@0:  * in particular, macros and private variables.
sl@0:  */
sl@0: 
sl@0: #include <_ansi.h>
sl@0: #include <stdarg.h>
sl@0: #include <reent.h>
sl@0: #include <unistd.h>
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: extern int    __svfscanf	(FILE *, const char *,va_list);
sl@0: extern FILE*  __sfp		(struct _reent *);
sl@0: extern int    __sflags		(struct _reent *,const wchar_t*, int*);
sl@0: extern int    __srefill		(FILE *);
sl@0: extern int    __sread		(void *, char *, int);
sl@0: extern int    __swrite		(void *, char const *, int);
sl@0: extern fpos_t __sseek		(void *, fpos_t, int);
sl@0: extern int    __sclose		(void *);
sl@0: extern void   __sinit		(struct _reent *);
sl@0: extern void   __smakebuf	(FILE *);
sl@0: extern int    _fwalk		(struct _reent *, int (*)(FILE *));
sl@0: struct _glue* __sfmoreglue	(struct _reent *,int n);
sl@0: extern int    __srefill		(FILE *fp);
sl@0: extern int    __srget		(FILE *fp);
sl@0: extern int    __swbuf		(int c, FILE *fp);
sl@0: 
sl@0: /**
sl@0: Macros used inside the implementation of STDIO. These used to be in
sl@0: the <stdio.h> include file, but we want to hide them as much as
sl@0: possible to give us a change to change the implementation if 
sl@0: necessary.
sl@0: @internalComponent
sl@0: */
sl@0: #define	__sfeof(p)	(((p)->_flags & __SEOF) != 0)
sl@0: #define	__sferror(p)	(((p)->_flags & __SERR) != 0)
sl@0: #define	__sclearerr(p)	((void)((p)->_flags &= ~(__SERR|__SEOF)))
sl@0: #define	__sfileno(p)	((p)->_file)
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: #define	feof(p)		__sfeof(p)
sl@0: #define	ferror(p)	__sferror(p)
sl@0: #define	clearerr(p)	__sclearerr(p)
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: #define	__sgetc(p) (--(p)->_r < 0 ? __srget(p) : (int)(*(p)->_p++))
sl@0: #define	__sputc(c, p) \
sl@0: 	(--(p)->_w < 0 ? \
sl@0: 		(p)->_w >= (p)->_lbfsize ? \
sl@0: 			(*(p)->_p = (unsigned char)(c)), *(p)->_p != '\n' ? \
sl@0: 				(int)*(p)->_p++ : \
sl@0: 				__swbuf('\n', p) : \
sl@0: 			__swbuf((int)(c), p) : \
sl@0: 		(*(p)->_p = (unsigned char)(c), (int)*(p)->_p++))
sl@0: 
sl@0: /** 
sl@0: Called by the main entry point fns to ensure stdio has been initialized.  
sl@0: @internalComponent
sl@0: */
sl@0: #define CHECK_INIT(fp)	/* done in the construction of the struct _reent */
sl@0: /*
sl@0: #define CHECK_INIT(fp) \
sl@0:     {					\
sl@0:       if ((fp)->_data == 0)			\
sl@0: 		(fp)->_data = _REENT;		\
sl@0:       if (!(fp)->_data->__sdidinit)	\
sl@0: 		__sinit ((fp)->_data);		\
sl@0:     }
sl@0: */
sl@0: 
sl@0: /**
sl@0: Return true iff the given FILE cannot be written now.  
sl@0: @internalComponent
sl@0: */
sl@0: #define	cantwrite(fp) \
sl@0:   ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
sl@0:    __swsetup(fp))
sl@0: 
sl@0: /**
sl@0: Test whether the given stdio file has an active ungetc buffer;
sl@0: release such a buffer, without restoring ordinary unread data.  
sl@0: @internalComponent
sl@0: */
sl@0: #define	HASUB(fp) ((fp)->_ub._base != NULL)
sl@0: #define	FREEUB(fp) { \
sl@0: 	if ((fp)->_ub._base != (fp)->_ubuf) \
sl@0: 		_free_r(fp->_data, (char *)(fp)->_ub._base); \
sl@0: 	(fp)->_ub._base = NULL; \
sl@0: }
sl@0: 
sl@0: /**
sl@0: Test for an fgetline() buffer.  
sl@0: @internalComponent
sl@0: */
sl@0: #define	HASLB(fp) ((fp)->_lb._base != NULL)
sl@0: #define	FREELB(fp) { _free_r(fp->_data,(char *)(fp)->_lb._base); (fp)->_lb._base = NULL; }
sl@0: 
sl@0: /* 
sl@0: WARNING: _dcvt is defined in the stdlib directory, not here!  
sl@0: @internalComponent
sl@0: */
sl@0: char *_dcvt		(struct _reent *, char *, double, int, int, char, int);
sl@0: char *_sicvt	(char *, short, char);
sl@0: char *_icvt		(char *, int, char);
sl@0: char *_licvt	(char *, long, char);
sl@0: #ifdef __GNUC__
sl@0: char *_llicvt	(char *, long long, char);
sl@0: #endif
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: #define CVT_BUF_SIZE 128
sl@0: /**
sl@0: @internalComponent
sl@0: */
sl@0: #define	NDYNAMIC 4	/* add four more whenever necessary */