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/* Copyright Natanael Copa 2011
LGPL
*/
#include <lua.h>
#include <lualib.h>
#include <lauxlib.h>
#include <magic.h>
#define MODULE_NAME "magic"
#define MODULE_VERSION "0.1"
#define LUA_MAGIC_META "magic"
struct magic_constmap {
const char *name;
int value;
} constmap[] = {
{ "NONE", MAGIC_NONE },
{ "DEBUG", MAGIC_DEBUG },
{ "SYMLINK", MAGIC_SYMLINK },
{ "COMPRESS", MAGIC_COMPRESS },
{ "DEVICES", MAGIC_DEVICES },
{ "MIME_TYPE", MAGIC_MIME_TYPE },
{ "CONTINUE", MAGIC_CONTINUE },
{ "CHECK", MAGIC_CHECK },
{ "PRESERVE_ATIME", MAGIC_PRESERVE_ATIME },
{ "RAW", MAGIC_RAW },
{ "ERROR", MAGIC_ERROR },
{ "MIME_ENCODING", MAGIC_MIME_ENCODING },
{ "APPLE", MAGIC_APPLE },
{ "NO_CHECK_COMPRESS", MAGIC_NO_CHECK_COMPRESS },
{ "NO_CHECK_TAR", MAGIC_NO_CHECK_TAR },
{ "NO_CHECK_SOFT", MAGIC_NO_CHECK_SOFT },
{ "NO_CHECK_APPTYPE", MAGIC_NO_CHECK_APPTYPE },
{ "NO_CHECK_ELF", MAGIC_NO_CHECK_ELF },
{ "NO_CHECK_TEXT", MAGIC_NO_CHECK_TEXT },
{ "NO_CHECK_CDF", MAGIC_NO_CHECK_CDF },
{ "NO_CHECK_TOKENS", MAGIC_NO_CHECK_TOKENS },
{ "NO_CHECK_ENCODING", MAGIC_NO_CHECK_ENCODING },
{ "NO_CHECK_BUILTIN", MAGIC_NO_CHECK_BUILTIN },
{ "NO_CHECK_TEXT", MAGIC_NO_CHECK_TEXT },
{ "NO_CHECK_FORTRAN", MAGIC_NO_CHECK_FORTRAN },
{ "NO_CHECK_TROFF", MAGIC_NO_CHECK_TROFF },
{ NULL, 0},
};
static void init_consts(lua_State *L)
{
int i;
for (i = 0; constmap[i].name != NULL; i++) {
lua_pushstring(L, constmap[i].name);
lua_pushnumber(L, constmap[i].value);
lua_settable(L, -3);
}
}
static int Ptodo(lua_State *L)
{
printf("todo\n");
return 0;
}
static int Popen(lua_State *L)
{
magic_t *h;
int flags = luaL_optinteger(L, 1, MAGIC_NONE);
h = lua_newuserdata(L, sizeof(magic_t));
luaL_getmetatable(L, LUA_MAGIC_META);
lua_setmetatable(L, -2);
*h = magic_open(flags);
if (*h == NULL)
luaL_error(L, "magic_open failed");
return 1;
}
static magic_t Pmagic_checkarg(lua_State *L, int index)
{
magic_t *m;
luaL_checktype(L, index, LUA_TUSERDATA);
m = (magic_t *) luaL_checkudata(L, index, LUA_MAGIC_META);
if (m == NULL)
luaL_typerror(L, index, LUA_MAGIC_META);
return *m;
}
static int Pclose(lua_State *L)
{
magic_t m = Pmagic_checkarg(L, 1);
if (m)
magic_close(m);
m = NULL;
return 0;
}
static int Pfile(lua_State *L)
{
magic_t m = Pmagic_checkarg(L, 1);
const char *filename = luaL_checkstring(L, 2);
lua_pushstring(L, magic_file(m, filename));
return 1;
}
static int Perror(lua_State *L)
{
magic_t m = Pmagic_checkarg(L, 1);
lua_pushstring(L, magic_error(m));
return 1;
}
static int Pload(lua_State *L)
{
magic_t m = Pmagic_checkarg(L, 1);
char *filename = luaL_optstring(L, 2, NULL);
lua_pushstring(L, magic_load(m, filename));
return 1;
}
static const luaL_reg Pmagic_methods[] = {
{"open", Popen},
{"close", Pclose},
{"getpath", Ptodo},
{"file", Pfile},
{"descriptor", Ptodo},
{"buffer", Ptodo},
{"error", Perror},
{"setflags", Ptodo},
{"load", Pload},
{"compile", Ptodo},
{"check", Ptodo},
{"list", Ptodo},
{"errno", Ptodo},
{NULL, NULL}
};
static const luaL_reg Pmeta_methods[] = {
{"__gc", Pclose},
{NULL, NULL},
};
LUALIB_API int luaopen_magic(lua_State *L)
{
luaL_openlib(L, MODULE_NAME, Pmagic_methods, 0);
lua_pushliteral(L, "version");
lua_pushliteral(L, MODULE_VERSION);
lua_settable(L, -3);
init_consts(L);
luaL_newmetatable(L, LUA_MAGIC_META);
luaL_register(L, NULL, Pmeta_methods);
lua_pushliteral(L, "__index");
lua_pushvalue(L, -3);
lua_rawset(L, -3);
lua_pushliteral(L, "__metatable");
lua_pushvalue(L, -3);
lua_rawset(L, -3);
lua_pop(L, 1);
return 1;
}
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