| /* |
| ** $Id: lzio.h,v 1.5 1999/08/16 20:52:00 roberto Exp roberto $ |
| ** 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 ------------------ */ |
| |
| #define ZBSIZE 256 /* buffer size */ |
| |
| 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 |
