diff options
author | chai <chaifix@163.com> | 2018-08-11 12:06:55 +0800 |
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committer | chai <chaifix@163.com> | 2018-08-11 12:06:55 +0800 |
commit | 2877e6b939b64b33c119997288bba42f86a06776 (patch) | |
tree | 6b044ec7a131787e391ba624e47709950a009c4b /Source/lua51/lzio.h | |
parent | 74f0f02a7de9cea83928a15e34d3cc80ee55efea (diff) |
Diffstat (limited to 'Source/lua51/lzio.h')
-rw-r--r-- | Source/lua51/lzio.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/Source/lua51/lzio.h b/Source/lua51/lzio.h new file mode 100644 index 0000000..38c60b1 --- /dev/null +++ b/Source/lua51/lzio.h @@ -0,0 +1,67 @@ +/* +** $Id: lzio.h,v 1.21.1.1 2007/12/27 13:02:25 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)) + +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 |