Standard Input Output for C (Header)

stdio.h

/*  stdio.h

    Definitions for stream input/output.

        Copyright (c) Borland International 1987,1988,1990,1991
    All Rights Reserved.
*/

#ifndef __STDIO_H
#define __STDIO_H

#ifdef __DLL__
#define _FAR far
#else
#define _FAR
#endif

#if __STDC__
#define _Cdecl
#else
#define _Cdecl  cdecl
#endif

#ifndef __PAS__
#define _CType _Cdecl
#else
#define _CType pascal
#endif

#ifndef _SIZE_T
#define _SIZE_T
typedef unsigned size_t;
#endif

#ifndef NULL
#if defined(__TINY__) || defined(__SMALL__) || defined(__MEDIUM__)
#define NULL    0
#else
#define NULL    0L
#endif
#endif

/* Definition of the file position type
*/
typedef long    fpos_t;

/* Definition of the control structure for streams
*/
typedef struct  {
        short           level;          /* fill/empty level of buffer */
        unsigned        flags;          /* File status flags          */
        char            fd;             /* File descriptor            */
        unsigned char   hold;           /* Ungetc char if no buffer   */
        short           bsize;          /* Buffer size                */
        unsigned char   _FAR *buffer;   /* Data transfer buffer       */
        unsigned char   _FAR *curp;     /* Current active pointer     */
        unsigned        istemp;         /* Temporary file indicator   */
        short           token;          /* Used for validity checking */
}       FILE;                           /* This is the FILE object    */

/* Bufferisation type to be used as 3rd argument for "setvbuf" function
*/
#define _IOFBF  0
#define _IOLBF  1
#define _IONBF  2

/*  "flags" bits definitions
*/
#define _F_RDWR 0x0003                  /* Read/write flag       */
#define _F_READ 0x0001                  /* Read only file        */
#define _F_WRIT 0x0002                  /* Write only file       */
#define _F_BUF  0x0004                  /* Malloc'ed Buffer data */
#define _F_LBUF 0x0008                  /* line-buffered file    */
#define _F_ERR  0x0010                  /* Error indicator       */
#define _F_EOF  0x0020                  /* EOF indicator         */
#define _F_BIN  0x0040                  /* Binary file indicator */
#define _F_IN   0x0080                  /* Data is incoming      */
#define _F_OUT  0x0100                  /* Data is outgoing      */
#define _F_TERM 0x0200                  /* File is a terminal    */

/* End-of-file constant definition
*/
#define EOF (-1)            /* End of file indicator */

/* Number of files that can be open simultaneously
*/
#if __STDC__
#define FOPEN_MAX 18        /* Able to have 18 files (20 - stdaux & stdprn) */
#else
#define FOPEN_MAX 20        /* Able to have 20 files */
#define SYS_OPEN  20
#endif

#define FILENAME_MAX 80

/* Default buffer size use by "setbuf" function
*/
#define BUFSIZ  512         /* Buffer size for stdio */

/* Size of an arry large enough to hold a temporary file name string
*/
#define L_ctermid   5       /* CON: plus null byte */
#define L_tmpnam    13      /* tmpnam buffer size */

/* Constants to be used as 3rd argument for "fseek" function
*/
#define SEEK_CUR    1
#define SEEK_END    2
#define SEEK_SET    0

/* Number of unique file names that shall be generated by "tmpnam" function
*/
#define TMP_MAX     0xFFFF

/* Standard I/O predefined streams
*/
extern  FILE    _Cdecl _streams[];

#define stdin   (&_streams[0])
#define stdout  (&_streams[1])
#define stderr  (&_streams[2])

#if !__STDC__
#define stdaux  (&_streams[3])
#define stdprn  (&_streams[4])
#endif

#ifdef __cplusplus
extern "C" {
#endif
void    _Cdecl clearerr(FILE _FAR *__stream);
int     _Cdecl fclose(FILE _FAR *__stream);
int     _Cdecl fflush(FILE _FAR *__stream);
int     _Cdecl fgetc(FILE _FAR *__stream);
int     _Cdecl fgetpos(FILE _FAR *__stream, fpos_t _FAR *__pos);
char   _FAR *_Cdecl fgets(char _FAR *__s, int __n, FILE _FAR *__stream);
FILE   _FAR *_Cdecl fopen(const char _FAR *__path, const char _FAR *__mode);
int     _Cdecl fprintf(FILE _FAR *__stream, const char _FAR *__format, ...);
int     _Cdecl fputc(int __c, FILE _FAR *__stream);
int     _Cdecl fputs(const char _FAR *__s, FILE _FAR *__stream);
size_t  _Cdecl fread(void _FAR *__ptr, size_t __size, size_t __n,
                     FILE _FAR *__stream);
FILE   _FAR *_Cdecl freopen(const char _FAR *__path, const char _FAR *__mode,
                            FILE _FAR *__stream);
int     _Cdecl fscanf(FILE _FAR *__stream, const char _FAR *__format, ...);
int     _Cdecl fseek(FILE _FAR *__stream, long __offset, int __whence);
int     _Cdecl fsetpos(FILE _FAR *__stream, const fpos_t _FAR *__pos);
long    _Cdecl ftell(FILE _FAR *__stream);
size_t  _Cdecl fwrite(const void _FAR *__ptr, size_t __size, size_t __n,
                      FILE _FAR *__stream);

#if !defined( _Windows )
char   _FAR *_Cdecl gets(char _FAR *__s);
#endif

void    _Cdecl perror(const char _FAR *__s);

#if !defined( _Windows )
int     _Cdecl printf(const char _FAR *__format, ...);
int     _Cdecl puts(const char _FAR *__s);
#endif

int     _CType remove(const char _FAR *__path);
int     _Cdecl rename(const char _FAR *__oldname,const char _FAR *__newname);
void    _Cdecl rewind(FILE _FAR *__stream);

#if !defined( _Windows )
int     _Cdecl scanf(const char _FAR *__format, ...);
#endif

void    _Cdecl setbuf(FILE _FAR *__stream, char _FAR *__buf);
int     _Cdecl setvbuf(FILE _FAR *__stream, char _FAR *__buf,
                       int __type, size_t __size);
int     _Cdecl sprintf(char _FAR *__buffer, const char _FAR *__format, ...);
int     _Cdecl sscanf(const char _FAR *__buffer,
                      const char _FAR *__format, ...);
char   _FAR *_Cdecl strerror(int __errnum);
FILE   _FAR *_Cdecl tmpfile(void);
char   _FAR *_Cdecl tmpnam(char _FAR *__s);
int     _Cdecl ungetc(int __c, FILE _FAR *__stream);
int     _Cdecl vfprintf(FILE _FAR *__stream, const char _FAR *__format,
                        void _FAR *__arglist);
int     _Cdecl vfscanf(FILE _FAR *__stream, const char _FAR *__format,
                       void _FAR *__arglist);

#if !defined( _Windows )
int     _CType vprintf(const char _FAR *__format, void _FAR *__arglist);
int     _Cdecl vscanf(const char _FAR *__format, void _FAR *__arglist);
#endif

int     _Cdecl vsprintf(char _FAR *__buffer, const char _FAR *__format,
                        void _FAR *__arglist);
int     _Cdecl vsscanf(const char _FAR *__buffer, const char _FAR *__format,
                        void _FAR *__arglist);
int     _CType unlink(const char _FAR *__path);
int     _Cdecl getc(FILE _FAR *__fp);

#if !defined( _Windows )
int     _Cdecl getchar(void);
int     _Cdecl putchar(const int __c);
#endif

int     _Cdecl putc(const int __c, FILE _FAR *__fp);
int     _Cdecl feof(FILE _FAR *__fp);
int     _Cdecl ferror(FILE _FAR *__fp);


#if !__STDC__
int     _Cdecl fcloseall(void);
FILE   _FAR *_Cdecl fdopen(int __handle, char _FAR *__type);
int     _Cdecl fgetchar(void);
int     _Cdecl flushall(void);
int     _Cdecl fputchar(int __c);
int     _Cdecl getw(FILE _FAR *__stream);
int     _Cdecl putw(int __w, FILE _FAR *__stream);
char   _FAR *_Cdecl _strerror(const char _FAR *__s);
#define fileno(f)       ((f)->fd)
#endif

int      _Cdecl _fgetc(FILE _FAR *__stream);           /* used by getc() macro */
int      _Cdecl _fputc(char __c, FILE _FAR *__stream); /* used by putc() macro */
#ifdef  __cplusplus
}
#endif

/*  The following macros provide for common functions */

#define ferror(f)   ((f)->flags & _F_ERR)
#define feof(f)     ((f)->flags & _F_EOF)

#define getc(f) \
  ((--((f)->level) >= 0) ? (unsigned char)(*(f)->curp++) : \
    _fgetc (f))

#define putc(c,f) \
  ((++((f)->level) < 0) ? (unsigned char)(*(f)->curp++=(c)) : \
    _fputc ((c),f))

#define getchar()  getc(stdin)
#define putchar(c) putc((c), stdout)

#define ungetc(c,f) ungetc((c),f)   /* traditionally a macro */

#endif