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Fix memory bounds error
[proxmark3-svn] / liblua / lauxlib.h
1 /*
2 ** $Id: lauxlib.h,v 1.120 2011/11/29 15:55:08 roberto Exp $
3 ** Auxiliary functions for building Lua libraries
4 ** See Copyright Notice in lua.h
5 */
6
7
8 #ifndef lauxlib_h
9 #define lauxlib_h
10
11
12 #include <stddef.h>
13 #include <stdio.h>
14
15 #include "lua.h"
16
17
18
19 /* extra error code for `luaL_load' */
20 #define LUA_ERRFILE (LUA_ERRERR+1)
21
22
23 typedef struct luaL_Reg {
24 const char *name;
25 lua_CFunction func;
26 } luaL_Reg;
27
28
29 LUALIB_API void (luaL_checkversion_) (lua_State *L, lua_Number ver);
30 #define luaL_checkversion(L) luaL_checkversion_(L, LUA_VERSION_NUM)
31
32 LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
33 LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
34 LUALIB_API const char *(luaL_tolstring) (lua_State *L, int idx, size_t *len);
35 LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
36 LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
37 size_t *l);
38 LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
39 const char *def, size_t *l);
40 LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
41 LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
42
43 LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
44 LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
45 lua_Integer def);
46 LUALIB_API lua_Unsigned (luaL_checkunsigned) (lua_State *L, int numArg);
47 LUALIB_API lua_Unsigned (luaL_optunsigned) (lua_State *L, int numArg,
48 lua_Unsigned def);
49
50 LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
51 LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
52 LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
53
54 LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname);
55 LUALIB_API void (luaL_setmetatable) (lua_State *L, const char *tname);
56 LUALIB_API void *(luaL_testudata) (lua_State *L, int ud, const char *tname);
57 LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
58
59 LUALIB_API void (luaL_where) (lua_State *L, int lvl);
60 LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
61
62 LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
63 const char *const lst[]);
64
65 LUALIB_API int (luaL_fileresult) (lua_State *L, int stat, const char *fname);
66 LUALIB_API int (luaL_execresult) (lua_State *L, int stat);
67
68 /* pre-defined references */
69 #define LUA_NOREF (-2)
70 #define LUA_REFNIL (-1)
71
72 LUALIB_API int (luaL_ref) (lua_State *L, int t);
73 LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
74
75 LUALIB_API int (luaL_loadfilex) (lua_State *L, const char *filename,
76 const char *mode);
77
78 #define luaL_loadfile(L,f) luaL_loadfilex(L,f,NULL)
79
80 LUALIB_API int (luaL_loadbufferx) (lua_State *L, const char *buff, size_t sz,
81 const char *name, const char *mode);
82 LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
83
84 LUALIB_API lua_State *(luaL_newstate) (void);
85
86 LUALIB_API int (luaL_len) (lua_State *L, int idx);
87
88 LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
89 const char *r);
90
91 LUALIB_API void (luaL_setfuncs) (lua_State *L, const luaL_Reg *l, int nup);
92
93 LUALIB_API int (luaL_getsubtable) (lua_State *L, int idx, const char *fname);
94
95 LUALIB_API void (luaL_traceback) (lua_State *L, lua_State *L1,
96 const char *msg, int level);
97
98 LUALIB_API void (luaL_requiref) (lua_State *L, const char *modname,
99 lua_CFunction openf, int glb);
100
101 /*
102 ** ===============================================================
103 ** some useful macros
104 ** ===============================================================
105 */
106
107
108 #define luaL_newlibtable(L,l) \
109 lua_createtable(L, 0, sizeof(l)/sizeof((l)[0]) - 1)
110
111 #define luaL_newlib(L,l) (luaL_newlibtable(L,l), luaL_setfuncs(L,l,0))
112
113 #define luaL_argcheck(L, cond,numarg,extramsg) \
114 ((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
115 #define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
116 #define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
117 #define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n)))
118 #define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d)))
119 #define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n)))
120 #define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d)))
121
122 #define luaL_typename(L,i) lua_typename(L, lua_type(L,(i)))
123
124 #define luaL_dofile(L, fn) \
125 (luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
126
127 #define luaL_dostring(L, s) \
128 (luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
129
130 #define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n)))
131
132 #define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
133
134 #define luaL_loadbuffer(L,s,sz,n) luaL_loadbufferx(L,s,sz,n,NULL)
135
136
137 /*
138 ** {======================================================
139 ** Generic Buffer manipulation
140 ** =======================================================
141 */
142
143 typedef struct luaL_Buffer {
144 char *b; /* buffer address */
145 size_t size; /* buffer size */
146 size_t n; /* number of characters in buffer */
147 lua_State *L;
148 char initb[LUAL_BUFFERSIZE]; /* initial buffer */
149 } luaL_Buffer;
150
151
152 #define luaL_addchar(B,c) \
153 ((void)((B)->n < (B)->size || luaL_prepbuffsize((B), 1)), \
154 ((B)->b[(B)->n++] = (c)))
155
156 #define luaL_addsize(B,s) ((B)->n += (s))
157
158 LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
159 LUALIB_API char *(luaL_prepbuffsize) (luaL_Buffer *B, size_t sz);
160 LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
161 LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
162 LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
163 LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
164 LUALIB_API void (luaL_pushresultsize) (luaL_Buffer *B, size_t sz);
165 LUALIB_API char *(luaL_buffinitsize) (lua_State *L, luaL_Buffer *B, size_t sz);
166
167 #define luaL_prepbuffer(B) luaL_prepbuffsize(B, LUAL_BUFFERSIZE)
168
169 /* }====================================================== */
170
171
172
173 /*
174 ** {======================================================
175 ** File handles for IO library
176 ** =======================================================
177 */
178
179 /*
180 ** A file handle is a userdata with metatable 'LUA_FILEHANDLE' and
181 ** initial structure 'luaL_Stream' (it may contain other fields
182 ** after that initial structure).
183 */
184
185 #define LUA_FILEHANDLE "FILE*"
186
187
188 typedef struct luaL_Stream {
189 FILE *f; /* stream (NULL for incompletely created streams) */
190 lua_CFunction closef; /* to close stream (NULL for closed streams) */
191 } luaL_Stream;
192
193 /* }====================================================== */
194
195
196
197 /* compatibility with old module system */
198 #if defined(LUA_COMPAT_MODULE)
199
200 LUALIB_API void (luaL_pushmodule) (lua_State *L, const char *modname,
201 int sizehint);
202 LUALIB_API void (luaL_openlib) (lua_State *L, const char *libname,
203 const luaL_Reg *l, int nup);
204
205 #define luaL_register(L,n,l) (luaL_openlib(L,(n),(l),0))
206
207 #endif
208
209
210 #endif
211
212
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