从C++/C设置全局LuaYApple变量?

在C++中:

int setLuaPath( lua_State* L, const char* path )
{
    lua_getglobal( L, "package" );
    lua_getfield( L, -1, "path" ); // get field "path" from table at top of stack (-1)
    std::string cur_path = lua_tostring( L, -1 ); // grab path string from top of stack
    cur_path.append( ";" ); // do your path magic here
    cur_path.append( path );
    lua_pop( L, 1 ); // get rid of the string on the stack we just pushed on line 5
    lua_pushstring( L, cur_path.c_str() ); // push the new one
    lua_setfield( L, -2, "path" ); // set the field "path" in table at -2 with value at top of stack
    lua_pop( L, 1 ); // get rid of package table from top of stack
    return 0; // all done!
}

我还没有测试或编译它。我用过: http://lua.org/pil http://lua.org/manual/5.1

ObjC:从另一个答案来看,这是对我有效的。加上“/?.lua“是必需的。

int setLuaPath( NSString* path )  
{
    lua_getglobal( L, "package" );
    lua_getfield( L, -1, "path" ); // get field "path" from table at top of stack (-1)
    NSString * cur_path = [NSString stringWithUTF8String:lua_tostring( L, -1 )]; // grab path string from top of stack
    cur_path = [cur_path stringByAppendingString:@";"]; // do your path magic here
    cur_path = [cur_path stringByAppendingString:path];
    cur_path = [cur_path stringByAppendingString:@"/?.lua"];
    lua_pop( L, 1 ); // get rid of the string on the stack we just pushed on line 5
    lua_pushstring( L, [cur_path UTF8String]); // push the new one
    lua_setfield( L, -2, "path" ); // set the field "path" in table at -2 with value at top of stack
    lua_pop( L, 1 ); // get rid of package table from top of stack
    return 0; // all done!
}

   ... add this code somewhere, near where you lua_open() for example

   // Set Lua's Package.path to where our Lua files can be found
   NSString *luaPath = [[NSBundle mainBundle] pathForResource:@"name of any one of my lua files" ofType:@"lua"];
   setLuaPath([luaPath stringByDeletingLastPathComponent]);
   ...

package.path 打电话之前在卢阿 require .

通过执行两个lual_dostring函数,可以很容易地在c++中设置LUA_PATH和LUA_CPATH。

luaL_dostring(L, "package.path = package.path .. ';?.lua'");
luaL_dostring(L, "package.cpath = package.cpath .. ';?.dll'");

我花了几个小时才找到这个解决办法。。我希望有帮助。

#include <stdlib.h>

...

setenv ( "LUA_PATH", (char *)my_path, 1 );

我想这是不可能的,因为,正如你所见,出于安全原因,每个iPhone应用程序都生活在自己的沙盒中。

我想用 setenv 将只为当前进程及其子进程设置环境变量。

顺便说一句:如果计划将你的应用程序提交给AppStore,(据我所知),脚本语言/解释器将根据你签署的合同进行修改。

我不太熟悉iPhone的开发,但是在执行应用程序之前可以设置LUA_PATH env变量吗?

export LUA_PATH="foo"
/path/to/executable

Windows具有与批处理文件类似的功能。