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#include <u.h>
#include <base.h>
// -----------------------------------------------------------------------
// interface implementations
/* casting functions */
static
int
·read(void *rdr, int size, int n, void *buf)
{
return io·read((io·Stream *)rdr, size, n, buf);
}
static
byte
·get(void *rdr)
{
return io·getbyte((io·Stream *)rdr);
}
static
error
·unget(void *rdr, byte c)
{
return io·ungetbyte((io·Stream *)rdr, c);
}
static
int
·write(void *wtr, int sz, int n, void *buf)
{
return io·write((io·Stream *)wtr, sz, n, buf);
}
static
error
·put(void *wtr, byte c)
{
return io·putbyte((io·Stream *)wtr, c);
}
static
int
·puts(void *wtr, string s)
{
return io·putstring((io·Stream *)wtr, s);
}
static
int
·seek(void *skr, long off, enum SeekPos whence)
{
return io·seek((io·Stream *)skr, off, whence);
}
static
long
·tell(void *skr)
{
return io·tell((io·Stream *)skr);
}
/* actual interfaces */
io·Reader sys·Reader = (io·Reader){ ·read };
io·Seeker sys·Seeker = (io·Seeker){ ·seek, ·tell };
io·Peeker sys·Peeker = (io·Peeker){ ·get, ·unget };
io·SeekReader sys·SeekReader = (io·SeekReader){ ·seek, ·tell, ·read };
io·PeekReader sys·PeekReader = (io·PeekReader){ ·read, ·get, ·unget };
io·Writer sys·Writer = (io·Writer){ ·write };
io·Putter sys·Putter = (io·Putter){ ·put, ·puts };
io·PutWriter sys·PutWriter = (io·PutWriter){ ·write, ·put, ·puts };
io·ReadWriter sys·ReadWriter = (io·ReadWriter){ ·read, ·write };
// -----------------------------------------------------------------------
// open/close
io·Stream*
io·open(byte *name, byte *mode)
{
return fopen(name, mode);
}
int
io·fd(io·Stream *s)
{
return fileno(s);
}
error
io·stat(io·Stream *s, io·Stat *buf)
{
return fstat(fileno(s), buf);
}
error
io·close(io·Stream *s)
{
return fclose(s);
}
// -----------------------------------------------------------------------
// reading
byte
io·getbyte(io·Stream *s)
{
return fgetc(s);
}
error
io·ungetbyte(io·Stream *s, byte c)
{
return ungetc(c, s);
}
int
io·read(io·Stream *s, int sz, int n, void *buf)
{
return fread(buf, sz, n, s);
}
int
io·readln(io·Stream *s, int n, byte* buf)
{
byte* b;
b = fgets(buf, n+1, s);
if(b == nil)
return -1;
return strlen(buf);
}
// -----------------------------------------------------------------------
// writing
error
io·putbyte(io·Stream *s, byte c)
{
return fputc(c, s);
}
int
io·putstring(io·Stream *s, string str)
{
return fputs(str, s);
}
int
io·write(io·Stream *s, int sz, int n, void *buf)
{
return fwrite(buf, sz, n, s);
}
int
io·flush(io·Stream *s)
{
return fflush(s);
}
// -----------------------------------------------------------------------
// seek
int
io·seek(io·Stream *s, long off, enum SeekPos origin)
{
return fseek(s, off, origin);
}
long
io·tell(io·Stream *s)
{
return ftell(s);
}
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