local.h

/*
 * Copyright (c) 1990, 2007 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.
 *
 *  %W% (UofMD/Berkeley) %G%
 */

/*
 * Information local to this implementation of stdio,
 * in particular, macros and private variables.
 */

#include <_ansi.h>
#include <reent.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef __SCLE
#include <io.h>
#endif

extern u_char *_EXFUN(__sccl, (char *, u_char *fmt));
extern int
    _EXFUN(__svfscanf_r, (struct _reent *, FILE *, _CONST char *, va_list));
extern int
    _EXFUN(__ssvfscanf_r, (struct _reent *, FILE *, _CONST char *, va_list));
extern int
    _EXFUN(__svfiscanf_r, (struct _reent *, FILE *, _CONST char *, va_list));
extern int
    _EXFUN(__ssvfiscanf_r, (struct _reent *, FILE *, _CONST char *, va_list));
int _EXFUN(
    _svfprintf_r, (struct _reent *, FILE *, const char *,
                   va_list) _ATTRIBUTE((__format__(__printf__, 3, 0))));
int _EXFUN(
    _svfiprintf_r, (struct _reent *, FILE *, const char *,
                    va_list) _ATTRIBUTE((__format__(__printf__, 3, 0))));
extern FILE *_EXFUN(__sfp, (struct _reent *) );
extern int _EXFUN(__sflags, (struct _reent *, _CONST char *, int *) );
extern int _EXFUN(__srefill_r, (struct _reent *, FILE *) );
extern _READ_WRITE_RETURN_TYPE
    _EXFUN(__sread, (struct _reent *, void *, char *, int) );
extern _READ_WRITE_RETURN_TYPE
    _EXFUN(__swrite, (struct _reent *, void *, const char *, int) );
extern _fpos_t _EXFUN(__sseek, (struct _reent *, void *, _fpos_t, int) );
extern int _EXFUN(__sclose, (struct _reent *, void *) );
extern int _EXFUN(__stextmode, (int) );
extern _VOID _EXFUN(__sinit, (struct _reent *) );
extern _VOID _EXFUN(_cleanup_r, (struct _reent *) );
extern _VOID _EXFUN(__smakebuf_r, (struct _reent *, FILE *) );
extern int _EXFUN(_fwalk, (struct _reent *, int (*)(FILE *)));
extern int
    _EXFUN(_fwalk_reent, (struct _reent *, int (*)(struct _reent *, FILE *)));
struct _glue *_EXFUN(__sfmoreglue, (struct _reent *, int n));
extern int _EXFUN(__submore, (struct _reent *, FILE *) );

#ifdef __LARGE64_FILES
extern _fpos64_t _EXFUN(__sseek64, (struct _reent *, void *, _fpos64_t, int) );
extern _READ_WRITE_RETURN_TYPE
    _EXFUN(__swrite64, (struct _reent *, void *, const char *, int) );
#endif

/* Called by the main entry point fns to ensure stdio has been initialized.  */

#ifdef _REENT_SMALL
#define CHECK_INIT(ptr, fp)                          \
    do                                               \
    {                                                \
        if ((ptr) && !(ptr)->__sdidinit)             \
            __sinit(ptr);                            \
        if ((fp) == (FILE *) &__sf_fake_stdin)       \
            (fp) = _stdin_r(ptr);                    \
        else if ((fp) == (FILE *) &__sf_fake_stdout) \
            (fp) = _stdout_r(ptr);                   \
        else if ((fp) == (FILE *) &__sf_fake_stderr) \
            (fp) = _stderr_r(ptr);                   \
    } while (0)
#else /* !_REENT_SMALL   */
#define CHECK_INIT(ptr, fp)              \
    do                                   \
    {                                    \
        if ((ptr) && !(ptr)->__sdidinit) \
            __sinit(ptr);                \
    } while (0)
#endif /* !_REENT_SMALL  */

#define CHECK_STD_INIT(ptr)              \
    do                                   \
    {                                    \
        if ((ptr) && !(ptr)->__sdidinit) \
            __sinit(ptr);                \
    } while (0)

/* Return true iff the given FILE cannot be written now.  */

#define cantwrite(ptr, fp)                                       \
    ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
     __swsetup_r(ptr, fp))

/* Test whether the given stdio file has an active ungetc buffer;
   release such a buffer, without restoring ordinary unread data.  */

#define HASUB(fp) ((fp)->_ub._base != NULL)
#define FREEUB(ptr, fp)                             \
    {                                               \
        if ((fp)->_ub._base != (fp)->_ubuf)         \
            _free_r(ptr, (char *) (fp)->_ub._base); \
        (fp)->_ub._base = NULL;                     \
    }

/* Test for an fgetline() buffer.  */

#define HASLB(fp) ((fp)->_lb._base != NULL)
#define FREELB(ptr, fp)                         \
    {                                           \
        _free_r(ptr, (char *) (fp)->_lb._base); \
        (fp)->_lb._base = NULL;                 \
    }

/*
 * Set the orientation for a stream. If o > 0, the stream has wide-
 * orientation. If o < 0, the stream has byte-orientation.
 */
#define ORIENT(fp, ori)                   \
    do                                    \
    {                                     \
        if (!((fp)->_flags & __SORD))     \
        {                                 \
            (fp)->_flags |= __SORD;       \
            if (ori > 0)                  \
                (fp)->_flags2 |= __SWID;  \
            else                          \
                (fp)->_flags2 &= ~__SWID; \
        }                                 \
    } while (0)

/* WARNING: _dcvt is defined in the stdlib directory, not here!  */

char *_EXFUN(_dcvt, (struct _reent *, char *, double, int, int, char, int) );
char *_EXFUN(_sicvt, (char *, short, char) );
char *_EXFUN(_icvt, (char *, int, char) );
char *_EXFUN(_licvt, (char *, long, char) );
#ifdef __GNUC__
char *_EXFUN(_llicvt, (char *, long long, char) );
#endif

#define CVT_BUF_SIZE 128

#define NDYNAMIC 4 /* add four more whenever necessary */

#ifdef __SINGLE_THREAD__
#define __sfp_lock_acquire()
#define __sfp_lock_release()
#define __sinit_lock_acquire()
#define __sinit_lock_release()
#else
_VOID _EXFUN(__sfp_lock_acquire, (_VOID));
_VOID _EXFUN(__sfp_lock_release, (_VOID));
_VOID _EXFUN(__sinit_lock_acquire, (_VOID));
_VOID _EXFUN(__sinit_lock_release, (_VOID));
#endif