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#ifndef mio_h
#define mio_h
#include "config.h"
#include <sys/types.h>
#include <string.h>
// Fault-tolerant wrappers around I/O functions - they automatically retry
// when they get an EINTR (for kernels that do not restart the calls themselves)
int mopen(const char *fname, int flags, mode_t mode);
int mread(int fd, void *buf, size_t count);
int mwrite(int fd, const void *buf, size_t count);
int mclose(int fd);
off_t mseek(int, off_t, int);
/////////////////////////////////////////////////////////////////////////////
//
// Class Mio - reinventing the stdio wheel.
//
/////////////////////////////////////////////////////////////////////////////
class Mio {
int fd_;
unsigned char *readptr;
unsigned char *writeptr;
off_t readstartpos;
int readsize;
int readcnt;
int writecnt;
int err;
unsigned char buf[8192];
public:
struct rfc2045 *rfc2045p;
Mio();
virtual ~Mio();
int Open(const char *, int, mode_t=0666);
void Close();
int peek() { return (readcnt ? *readptr:
fill() < 0 ? -1:(++readcnt,*--readptr)); }
int get() { return (readcnt ? (--readcnt,*readptr++):fill()); }
int put(int c) { return (writecnt ?
(--writecnt,*writeptr++=c):flush(c)); }
int seek(off_t, int);
int Rewind();
off_t tell();
virtual int write(const void *, int);
int fd() { return (fd_); }
void fd(int f) { Close();
err=0;
readcnt=0;
writecnt=0;
readptr=buf;
writeptr=buf;
fd_=f; }
int errflag() { return (err); }
void my_clearerr() { err=0; }
int flush() { return (flush(-1)); }
void write(const char *p) { write(p, strlen(p)); }
Mio &operator<<(const char *p) { write(p); return (*this); }
Mio &operator<<(const class Buffer &);
private:
int fill();
int flush(int);
} ;
class MioStdio : public Mio {
public:
MioStdio(int);
~MioStdio();
int write(const void *, int);
void write(const char *p) { write(p, strlen(p)); }
} ;
extern MioStdio mout, merr;
#endif
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