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Make minetest.debug accept multiple parameters; convert them to string

This commit is contained in:
Kahrl 2013-06-21 00:04:18 +02:00
parent 469d0b120e
commit c2cdaceed0
1 changed files with 21 additions and 3 deletions
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24
src/script/lua_api/luaapi.cpp
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@ -105,13 +105,31 @@ bool ModApiBasic::Initialize(lua_State* L,int top) {
return retval;
}
// debug(text)
// debug(...)
// Writes a line to dstream
int ModApiBasic::l_debug(lua_State *L)
{
NO_MAP_LOCK_REQUIRED;
std::string text = lua_tostring(L, 1);
dstream << text << std::endl;
// Handle multiple parameters to behave like standard lua print()
int n = lua_gettop(L);
lua_getglobal(L, "tostring");
for(int i = 1; i <= n; i++){
/*
Call tostring(i-th argument).
This is what print() does, and it behaves a bit
differently from directly calling lua_tostring.
*/
lua_pushvalue(L, -1); /* function to be called */
lua_pushvalue(L, i); /* value to print */
lua_call(L, 1, 1);
const char *s = lua_tostring(L, -1);
if(i>1)
dstream << "\t";
if(s)
dstream << s;
lua_pop(L, 1);
}
dstream << std::endl;
return 0;
}