src/common/streams.h

   1 #ifndef COMMON_STREAMS_H_INCLUDED
   2 #define COMMON_STREAMS_H_INCLUDED
   3
   4 #include <stddef.h>
   5 #include <stdint.h>
   6
   7 typedef struct Reader Reader;
   8 typedef struct Writer Writer;
   9 typedef struct Handle Handle;
  10
  11 struct Reader {
  12   long (*getpos)(Reader *r);
  13   void (*setpos)(Reader *r, long pos);
  14   void (*read)(Reader *r, void *data, size_t size, size_t n);
  15 };
  16
  17 struct Writer {
  18   long (*getpos)(Writer *w);
  19   void (*setpos)(Writer *w, long pos);
  20   void (*write)(Writer *w, const void *data, size_t size, size_t n);
  21 };
  22
  23 void stream_read (void *data, size_t size, size_t n, Reader *f);
  24 int8_t stream_read8 (Reader *f);
  25 int16_t stream_read16 (Reader *f);
  26 int32_t stream_read32 (Reader *f);
  27
  28 void stream_write (const void *data, size_t size, size_t n, Writer *w);
  29 void stream_write8 (int8_t x, Writer *w);
  30 void stream_write16 (int16_t x, Writer *w);
  31 void stream_write32 (int32_t x, Writer *w);
  32
  33 #endif /* COMMON_STREAMS_H_INCLUDED */