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/*
** $Id: lzio.h,v 1.5 2004/06/04 13:42:10 neil Exp $
** Buffered streams
** See Copyright Notice in lua.h
*/
#ifndef lzio_h
#define lzio_h
#include <stdio.h>
/* For Lua only */
#define zFopen luaZ_Fopen
#define zsopen luaZ_sopen
#define zmopen luaZ_mopen
#define zread luaZ_read
#define EOZ (-1) /* end of stream */
typedef struct zio ZIO;
ZIO* zFopen (ZIO* z, FILE* f, const char *name); /* open FILEs */
ZIO* zsopen (ZIO* z, const char* s, const char *name); /* string */
ZIO* zmopen (ZIO* z, const char* b, size_t size, const char *name); /* memory */
size_t zread (ZIO* z, void* b, size_t n); /* read next n bytes */
#define zgetc(z) (((z)->n--)>0 ? ((int)*(z)->p++): (z)->filbuf(z))
#define zungetc(z) (++(z)->n,--(z)->p)
#define zname(z) ((z)->name)
/* --------- Private Part ------------------ */
#ifndef ZBSIZE
#define ZBSIZE 256 /* buffer size */
#endif
struct zio {
size_t n; /* bytes still unread */
const unsigned char* p; /* current position in buffer */
int (*filbuf)(ZIO* z);
void* u; /* additional data */
const char *name;
unsigned char buffer[ZBSIZE]; /* buffer */
};
#endif
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