diff options
Diffstat (limited to 'lua/src/lzio.h')
-rw-r--r-- | lua/src/lzio.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/lua/src/lzio.h b/lua/src/lzio.h new file mode 100644 index 0000000..b695305 --- /dev/null +++ b/lua/src/lzio.h @@ -0,0 +1,53 @@ +/* +** $Id: lzio.h,v 1.1 2002/02/14 10:46:59 jcatki 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 |