include/cbuf.h

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#ifndef __CBUF_H__
#define __CBUF_H__

#include <ctype.h>
#include <string.h>
#include <sys/types.h>

#include "class.h"
#include "stream.h"

#include "commons.h"

#define ECBUFOVFL               100


CLASS(Cbuf) {
        char * shm_name;  // shared memory identifier

        char * data;
        Bool   lock;

        size_t bsize;
        size_t bused;

        size_t write;
        size_t read;
};

ssize_t cbufRead(Cbuf,  Stream);
ssize_t cbufWrite(Cbuf, Stream);

char *  cbufGetLine(Cbuf, char **);
char *  cbufGetData(Cbuf, size_t);
char *  cbufSetData(Cbuf, const void *, size_t);
void    cbufEmpty(Cbuf);

char *  cbufGetRead(Cbuf this);
char *  cbufGetWrite(Cbuf this);
char *  cbufMemchr(Cbuf this, int c);
size_t  cbufAddrIndex(Cbuf this, const void * c);
void    cbufIncRead(Cbuf this, size_t n);
void    cbufIncWrite(Cbuf this, size_t n);
size_t  cbufGetFree(Cbuf this);
char    cbufIsEmpty(Cbuf this);
void    cbufSkipNonAlpha(Cbuf this);
Bool    cbufIsLocked(Cbuf this);
void    cbufLock(Cbuf this);
void    cbufRelease(Cbuf this);

#endif // __CBUF_H__

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