【发布时间】:2016-10-16 06:32:03
【问题描述】:
我有一个 const char **,它的长度会有所不同,但我想从 const char ** 创建一个 Lua 数组。
Myconst char ** 是这样的
arg[0]="Red"
arg[1]="Purple"
arg[2]="Yellow"
我需要将此数组转换为 Lua 中的全局表,但由于我不太擅长操作 Lua,因此我不确定如何处理。
【问题讨论】:
我有一个 const char **,它的长度会有所不同,但我想从 const char ** 创建一个 Lua 数组。
Myconst char ** 是这样的
arg[0]="Red"
arg[1]="Purple"
arg[2]="Yellow"
我需要将此数组转换为 Lua 中的全局表,但由于我不太擅长操作 Lua,因此我不确定如何处理。
【问题讨论】:
int main()
{
char* arg[3] = {
"Red",
"Purple",
"Yellow" };
//create lua state
Lua_state* L = luaL_newstate();
// create the table for arg
lua_createtable(L,3,0);
int table_index = lua_gettop(L);
for(int i =0; i<3; ++i )
{
// get the string on Lua's stack so it can be used
lua_pushstring(L,arg[i]);
// this could be done with lua_settable, but that would require pushing the integer as well
// the string we just push is removed from the stack
// notice the index is i+1 as lua is ones based
lua_rawseti(L,table_index,i+1);
}
//now put that table we've been messing with into the globals
//lua will remove the table from the stack leaving it empty once again
lua_setglobal(L,"arg");
}
【讨论】: