92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that the above copyright notice and this paragraph are
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* duplicated in all such forms and that any documentation,
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* advertising materials, and other materials related to such
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* distribution and use acknowledge that the software was developed
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* by the University of California, Berkeley. The name of the
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* University may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* %W% (UofMD/Berkeley) %G%
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*/
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/*
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* Information local to this implementation of stdio,
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* in particular, macros and private variables.
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*/
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#include <_ansi.h>
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#include <stdarg.h>
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#include <reent.h>
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#include <unistd.h>
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extern int _EXFUN(__svfscanf_r,(struct _reent *,FILE *, _CONST char *,va_list));
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extern FILE *_EXFUN(__sfp,(struct _reent *));
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extern int _EXFUN(__sflags,(struct _reent *,_CONST char*, int*));
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extern int _EXFUN(__srefill,(FILE *));
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extern _READ_WRITE_RETURN_TYPE _EXFUN(__sread,(void *, char *, int));
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extern _READ_WRITE_RETURN_TYPE _EXFUN(__swrite,(void *, char const *, int));
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extern fpos_t _EXFUN(__sseek,(void *, fpos_t, int));
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extern int _EXFUN(__sclose,(void *));
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extern int _EXFUN(__stextmode,(int));
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extern void _EXFUN(__sinit,(struct _reent *));
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extern void _EXFUN(_cleanup_r,(struct _reent *));
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extern void _EXFUN(__smakebuf,(FILE *));
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extern int _EXFUN(_fwalk,(struct _reent *, int (*)(FILE *)));
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struct _glue * _EXFUN(__sfmoreglue,(struct _reent *,int n));
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extern int _EXFUN(__srefill,(FILE *fp));
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/* Called by the main entry point fns to ensure stdio has been initialized. */
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#define CHECK_INIT(fp) \
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do \
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{ \
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if ((fp)->_data == 0) \
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(fp)->_data = _REENT; \
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if (!(fp)->_data->__sdidinit) \
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__sinit ((fp)->_data); \
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} \
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while (0)
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/* Return true iff the given FILE cannot be written now. */
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#define cantwrite(fp) \
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((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
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__swsetup(fp))
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/* Test whether the given stdio file has an active ungetc buffer;
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release such a buffer, without restoring ordinary unread data. */
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#define HASUB(fp) ((fp)->_ub._base != NULL)
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#define FREEUB(fp) { \
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if ((fp)->_ub._base != (fp)->_ubuf) \
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_free_r(fp->_data, (char *)(fp)->_ub._base); \
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(fp)->_ub._base = NULL; \
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}
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/* Test for an fgetline() buffer. */
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#define HASLB(fp) ((fp)->_lb._base != NULL)
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#define FREELB(fp) { _free_r(fp->_data,(char *)(fp)->_lb._base); (fp)->_lb._base = NULL; }
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/* WARNING: _dcvt is defined in the stdlib directory, not here! */
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char *_EXFUN(_dcvt,(struct _reent *, char *, double, int, int, char, int));
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char *_EXFUN(_sicvt,(char *, short, char));
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char *_EXFUN(_icvt,(char *, int, char));
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char *_EXFUN(_licvt,(char *, long, char));
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#ifdef __GNUC__
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char *_EXFUN(_llicvt,(char *, long long, char));
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#endif
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#define CVT_BUF_SIZE 128
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#define NDYNAMIC 4 /* add four more whenever necessary */
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