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#ifndef ___STDIO_H__
#define ___STDIO_H__
#include <stddef.h>
#include <stdarg.h>
#include <stdio.h>
#include "_safety.h"
#ifdef _POSIX_C_SOURCE
#include <sys/types.h>
#endif
#if !defined _POSIX_C_SOURCE || _POSIX_C_SOURCE < 199506L
#define flockfile(_file) (void)(_file)
#define funlockfile(_file) (void)(_file)
#define putc_unlocked(_c, _stream) fputc(_c, _stream)
#define getc_unlocked(_stream) fgetc(_stream)
#endif
#define f_is_open(s) (s && (s->bmode != 0))
#define ORIENT_WIDE (1)
#define ORIENT_BYTE (-1)
#define OP_NONE (0)
#define OP_INPUT (1)
#define OP_OUTPUT (2)
#ifdef NDEBUG
#define ASSERT_STREAM(__stream, __orientation, __operation)
#else
#define ASSERT_STREAM(__stream, __orientation, __operation) do { \
ASSERT_NONNULL(__stream); \
if ((__stream)->fd == -1) { \
UNDEFINED("In call to %s: Stream is not open (use after close?)", __func__); \
} \
if (((__operation) == OP_INPUT) && !(__stream)->read) { \
UNDEFINED("In call to %s: Attempted input operation on output stream", __func__); \
} \
if (((__operation) == OP_OUTPUT) && !(__stream)->write) { \
UNDEFINED("In call to %s: Attempted output operation on input stream", __func__); \
} \
if ((__orientation) && (__stream)->orientation && ((__orientation) != (__stream)->orientation)) { \
UNDEFINED("In call to %s(): Requested %s operation on %s oriented stream", __func__, (__orientation) > 0 ? "wide" : "byte", ((__stream)->orientation) > 0 ? "wide" : "byte"); \
} \
} while (0)
#endif
struct __FILE {
fpos_t pos;
char *buf; /* pointer to in-use buffer */
char ibuf[BUFSIZ]; /* statically allocated buffer */
size_t bsize; /* how big is the buffer */
size_t bpos; /* current position of next character */
enum {
UNUSED = 0,
FULL = _IOFBF,
LINE = _IOLBF,
NONE = _IONBF,
} bmode; /* buffer mode or stream available */
int fd; /* the backing file descriptor */
int nlocks; /* in multithreaded, used by flockfile() */
int thread; /* the owning thread if locked */
int orientation:2; /* 0 = undetermind, < 0 = byte, > 0 = wide */
unsigned int operation:2; /* TODO: previous operation, NONE, INPUT, OUTPUT (are there others?) */
unsigned int eof:1; /* eof indicator */
unsigned int err:1; /* error indicator */
unsigned int text:1; /* is this a text file? */
unsigned int read:1; /* open for reading? */
unsigned int write:1; /* open for writing? */
#ifdef _POSIX_C_SOURCE
pid_t pipe_pid; /* if stream is a pipe, the child pid */
#endif
fpos_t *valid_fpos;
size_t nvalid_fpos;
long int *valid_ftell;
size_t nvalid_ftell;
};
struct io_options {
const char *fnname; /* the calling function */
char *string; /* NULL or the output string */
wchar_t *wstring; /* NULL or the output wide string */
FILE *stream; /* NULL or the output stream */
int fd; /* -1 or the output file descriptor */
size_t maxlen; /* max number of bytes to write to string */
int ret; /* return value */
};
int __printf(struct io_options * restrict, const char * restrict, va_list);
int __scanf(struct io_options * restrict, const char * restrict, va_list);
struct __stdio {
struct __FILE FILES[FOPEN_MAX];
};
extern struct __stdio __stdio;
/*
STDC(-1)
*/
#endif
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