lzio.h
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上传日期:2019-04-29
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文件大小:1k
- /*
- ** $Id: lzio.h,v 1.7 2000/10/20 16:36:32 roberto 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