stream.h

#ifndef LIBCLOD_IO_H
#define LIBCLOD_IO_H
 
#include <clod/lib.h>
#include <clod/string.h>

#define CLOD_STREAM_OK 0
#define CLOD_STREAM_EOF (-1)
#define CLOD_STREAM_INVALID (-2)
#define CLOD_STREAM_INTERRUPTED (-3)
 
typedef struct clod_stream clod_stream;

CLOD_API
extern clod_stream *clod_stdin;

CLOD_API
extern clod_stream *clod_stdout;

CLOD_API
extern clod_stream *clod_stderr;

struct clod_stream {
    uintptr_t impl;

    int (*read)(clod_stream *self, struct clod_string *dst);

    int (*write)(clod_stream *self, struct clod_string *src);

    int (*close)(clod_stream *self);
};

CLOD_API CLOD_NONNULL(1, 2, 3)
int clod_stream_copy(clod_stream *dst, clod_stream *src, void *buffer, size_t buffer_size, size_t *total_transferred);

CLOD_API CLOD_NONNULL(1, 2)
void clod_pipe(clod_stream *pipe1_out, clod_stream *pipe2_out);

CLOD_API CLOD_NONNULL(1)
int clod_stream_format(clod_stream *dst, struct clod_string fmt, ...);

CLOD_API CLOD_NONNULL(1)
int clod_stream_vformat(clod_stream *dst, struct clod_string fmt, va_list args);
 
#endif