| 0,0 → 1,70 |
|---|
| /* |
| ** $Id: lzio.h,v 1.22 2009/05/18 17:26:25 roberto Exp $ |
| ** Buffered streams |
| ** See Copyright Notice in lua.h |
| */ |
| |
| |
| #ifndef lzio_h |
| #define lzio_h |
| |
| #include "lua.h" |
| |
| #include "lmem.h" |
| |
| |
| #define EOZ (-1) /* end of stream */ |
| |
| typedef struct Zio ZIO; |
| |
| #define char2int(c) cast(int, cast(unsigned char, (c))) |
| |
| #define zgetc(z) (((z)->n--)>0 ? char2int(*(z)->p++) : luaZ_fill(z)) |
| |
| #define zungetc(z) ((z)->n++, (z)->p--) |
| |
| |
| 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_resetbuffer(buff) ((buff)->n = 0) |
| |
| |
| #define luaZ_resizebuffer(L, buff, size) \ |
| (luaM_reallocvector(L, (buff)->buffer, (buff)->buffsize, size, char), \ |
| (buff)->buffsize = size) |
| |
| #define luaZ_freebuffer(L, buff) luaZ_resizebuffer(L, buff, 0) |
| |
| |
| LUAI_FUNC char *luaZ_openspace (lua_State *L, Mbuffer *buff, size_t n); |
| 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); /* read next n bytes */ |
| LUAI_FUNC int luaZ_lookahead (ZIO *z); |
| |
| |
| |
| /* --------- Private Part ------------------ */ |
| |
| struct Zio { |
| size_t n; /* bytes still unread */ |
| const char *p; /* current position in buffer */ |
| lua_Reader reader; |
| void* data; /* additional data */ |
| lua_State *L; /* Lua state (for reader) */ |
| }; |
| |
| |
| LUAI_FUNC int luaZ_fill (ZIO *z); |
| |
| #endif |