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#pragma once
#include <stdarg.h>
///@defgroup libk libk
///@{
///@defgroup stdio stdio
///@{
#ifdef __cplusplus
/**
* An object type used for streams
*/
struct kIoDevice {
/** Function that prints a character to the stream */
virtual void putc(char) = 0;
/** Function that prints a string to the stream */
virtual int puts(const char *, int) = 0;
/** Flush write buffers */
virtual void flush() = 0;
};
typedef kIoDevice FILE;
#else
typedef void FILE;
#endif
/** A FILE value corresponding to stdin, the keyboard buffer */
extern FILE *stdin;
/** A FILE value corresponding to stdout, the display */
extern FILE *stdout;
/** A FILE value corresponding to stderr, the uart */
extern FILE *stderr;
#ifdef __cplusplus
extern "C" {
#endif
/**
* Write the formatted string to stdout
* Supports ``%s`` (string), ``%d`` (decimal), ``%u`` (unsigned), ``%x`` (hexadecimal)
* @return number of bytes written
*/
int printf(const char *restrict format, ...);
/**
* Write the formatted string to stream; see printf
*/
int fprintf(FILE *restrict stream, const char *restrict format, ...);
/**
* Write the formatted string to stream; see printf
*/
int vfprintf(FILE *restrict stream, const char *restrict format, va_list ap);
#ifdef __cplusplus
}
#endif
///@}
///@}
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