# 1 "./lua/lzio.h"







#ifndef lzio_h
#define lzio_h 

#include "lua.h"

#include "lmem.h"


#define EOZ (-1)

typedef struct Zio ZIO;

#define zgetc(z) (((z)->n--)>0 ? cast_uchar(*(z)->p++) : luaZ_fill(z))


typedef struct Mbuffer {
  char *buffer;
  size_t n;
  size_t buffsize;
} Mbuffer;

#define luaZ_initbuffer(L,buff) ((buff)->buffer = NULL, (buff)->buffsize = 0)

#define luaZ_buffer(buff) ((buff)->buffer)
#define luaZ_sizebuffer(buff) ((buff)->buffsize)
#define luaZ_bufflen(buff) ((buff)->n)

#define luaZ_buffremove(buff,i) ((buff)->n -= (i))
#define luaZ_resetbuffer(buff) ((buff)->n = 0)


#define luaZ_resizebuffer(L,buff,size) \
 ((buff)->buffer = luaM_reallocvchar(L, (buff)->buffer, \
    (buff)->buffsize, size), \
 (buff)->buffsize = size)

#define luaZ_freebuffer(L,buff) luaZ_resizebuffer(L, buff, 0)


LUAI_FUNC void luaZ_init (lua_State *L, ZIO *z, lua_Reader reader,
                                        void *data);
LUAI_FUNC size_t luaZ_read (ZIO* z, void *b, size_t n);





struct Zio {
  size_t n;
  const char *p;
  lua_Reader reader;
  void *data;
  lua_State *L;
};


LUAI_FUNC int luaZ_fill (ZIO *z);

#endif