toolchain/gcc/newlib/libc/stdio/local.h

   1 /*
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms are permitted
   6  * provided that the above copyright notice and this paragraph are
   7  * duplicated in all such forms and that any documentation,
   8  * advertising materials, and other materials related to such
   9  * distribution and use acknowledge that the software was developed
  10  * by the University of California, Berkeley.  The name of the
  11  * University may not be used to endorse or promote products derived
  12  * from this software without specific prior written permission.
  13  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  14  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  16  *
  17  *      %W% (UofMD/Berkeley) %G%
  18  */
  19
  20 /*
  21  * Information local to this implementation of stdio,
  22  * in particular, macros and private variables.
  23  */
  24
  25 #include <_ansi.h>
  26 #include <stdarg.h>
  27 #include <reent.h>
  28 #include <unistd.h>
  29
  30 extern int    _EXFUN(__svfscanf_r,(struct _reent *,FILE *, _CONST char *,va_list));
  31 extern FILE  *_EXFUN(__sfp,(struct _reent *));
  32 extern int    _EXFUN(__sflags,(struct _reent *,_CONST char*, int*));
  33 extern int    _EXFUN(__srefill,(FILE *));
  34 extern _READ_WRITE_RETURN_TYPE _EXFUN(__sread,(void *, char *, int));
  35 extern _READ_WRITE_RETURN_TYPE _EXFUN(__swrite,(void *, char const *, int));
  36 extern _fpos_t _EXFUN(__sseek,(void *, _fpos_t, int));
  37 extern int    _EXFUN(__sclose,(void *));
  38 extern int    _EXFUN(__stextmode,(int));
  39 extern void   _EXFUN(__sinit,(struct _reent *));
  40 extern void   _EXFUN(_cleanup_r,(struct _reent *));
  41 extern void   _EXFUN(__smakebuf,(FILE *));
  42 extern int    _EXFUN(_fwalk,(struct _reent *, int (*)(FILE *)));
  43 struct _glue * _EXFUN(__sfmoreglue,(struct _reent *,int n));
  44 extern int   _EXFUN(__srefill,(FILE *fp));
  45
  46 /* Called by the main entry point fns to ensure stdio has been initialized.  */
  47
  48 #define CHECK_INIT(fp) \
  49   do                                    \
  50     {                                   \
  51       if (!_REENT->__sdidinit)          \
  52         __sinit (_REENT);               \
  53     }                                   \
  54   while (0)
  55
  56 /* Return true iff the given FILE cannot be written now.  */
  57
  58 #define cantwrite(fp) \
  59   ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
  60    __swsetup(fp))
  61
  62 /* Test whether the given stdio file has an active ungetc buffer;
  63    release such a buffer, without restoring ordinary unread data.  */
  64
  65 #define HASUB(fp) ((fp)->_ub._base != NULL)
  66 #define FREEUB(fp) { \
  67         if ((fp)->_ub._base != (fp)->_ubuf) \
  68                 _free_r(_REENT, (char *)(fp)->_ub._base); \
  69         (fp)->_ub._base = NULL; \
  70 }
  71
  72 /* Test for an fgetline() buffer.  */
  73
  74 #define HASLB(fp) ((fp)->_lb._base != NULL)
  75 #define FREELB(fp) { _free_r(_REENT,(char *)(fp)->_lb._base); (fp)->_lb._base = NULL; }
  76
  77 /* WARNING: _dcvt is defined in the stdlib directory, not here!  */
  78
  79 char *_EXFUN(_dcvt,(struct _reent *, char *, double, int, int, char, int));
  80 char *_EXFUN(_sicvt,(char *, short, char));
  81 char *_EXFUN(_icvt,(char *, int, char));
  82 char *_EXFUN(_licvt,(char *, long, char));
  83 #ifdef __GNUC__
  84 char *_EXFUN(_llicvt,(char *, long long, char));
  85 #endif
  86
  87 #define CVT_BUF_SIZE 128
  88
  89 #define NDYNAMIC 4      /* add four more whenever necessary */