C++ LuaToString函数代码示例

/* virtual */ void CContentTypeFormattedText::Parse(lua_State *l)
{
	Assert(lua_istable(l, -1));

	for (lua_pushnil(l); lua_next(l, -2); lua_pop(l, 1)) {
		const char *key = LuaToString(l, -2);
		if (!strcmp(key, "Format")) {
			this->Format = LuaToString(l, -1);
		} else if (!strcmp(key, "Font")) {
			this->Font = CFont::Get(LuaToString(l, -1));
		} else if (!strcmp(key, "Variable")) {
			const char *const name = LuaToString(l, -1);
			this->Index = UnitTypeVar.VariableNameLookup[name];
			if (this->Index == -1) {
				LuaError(l, "unknown variable '%s'" _C_ name);
			}
		} else if (!strcmp(key, "Component")) {
			this->Component = Str2EnumVariable(l, LuaToString(l, -1));
		} else if (!strcmp(key, "Centered")) {
			this->Centered = LuaToBoolean(l, -1);
		} else {
			LuaError(l, "'%s' invalid for method 'FormattedText' in DefinePanelContents" _C_ key);
		}
	}
}

/**
**  Parse the Condition for spell.
**
**  @param l         Lua state.
**  @param autocast  pointer to autocast to fill with data.
**
**  @note: autocast must be allocated. All data already in is LOST.
*/
static void CclSpellAutocast(lua_State *l, AutoCastInfo *autocast)
{
	if (!lua_istable(l, -1)) {
		LuaError(l, "incorrect argument");
	}
	const int args = lua_rawlen(l, -1);
	for (int j = 0; j < args; ++j) {
		lua_rawgeti(l, -1, j + 1);
		const char *value = LuaToString(l, -1);
		lua_pop(l, 1);
		++j;
		if (!strcmp(value, "range")) {
			lua_rawgeti(l, -1, j + 1);
			autocast->Range = LuaToNumber(l, -1);
			lua_pop(l, 1);
		} else if (!strcmp(value, "combat")) {
			lua_rawgeti(l, -1, j + 1);
			autocast->Combat = Ccl2Condition(l, LuaToString(l, -1));
			lua_pop(l, 1);
		} else if (!strcmp(value, "condition")) {
			if (!autocast->Condition) {
				autocast->Condition = new ConditionInfo;
			}
			lua_rawgeti(l, -1, j + 1);
			CclSpellCondition(l, autocast->Condition);
			lua_pop(l, 1);
		} else {
			LuaError(l, "Unsupported autocast tag: %s" _C_ value);
		}
	}
}

/**
**  Create a sound.
**
**  Glue between c and scheme. This function asks the sound system to
**  register a sound under a given name, wiht an associated list of files
**  (the list can be replaced by only one file).
**
**  @param l  Lua state.
**
**  @return   the sound id of the created sound
*/
static int CclMakeSound(lua_State *l)
{
	LuaCheckArgs(l, 2);

	std::string c_name = LuaToString(l, 1);
	std::vector<std::string> files;
	CSound *id;
	if (lua_isstring(l, 2)) {
		// only one file
		files.push_back(LuaToString(l, 2));
		id = MakeSound(c_name, files);
	} else if (lua_istable(l, 2)) {
		// several files
		const int args = lua_rawlen(l, 2);
		files.reserve(args);
		for (int j = 0; j < args; ++j) {
			lua_rawgeti(l, 2, j + 1);
			files.push_back(LuaToString(l, -1));
			lua_pop(l, 1);
		}
		id = MakeSound(c_name, files);
	} else {
		LuaError(l, "string or table expected");
		return 0;
	}
	LuaUserData *data = (LuaUserData *)lua_newuserdata(l, sizeof(LuaUserData));
	data->Type = LuaSoundType;
	data->Data = id;
	return 1;
}

/* virtual */ void Spell_Summon::Parse(lua_State *l, int startIndex, int endIndex)
{
	for (int j = startIndex; j < endIndex; ++j) {
		const char *value = LuaToString(l, -1, j + 1);
		++j;
		if (!strcmp(value, "unit-type")) {
			value = LuaToString(l, -1, j + 1);
			this->UnitType = UnitTypeByIdent(value);
			if (!this->UnitType) {
				this->UnitType = 0;
				DebugPrint("unit type \"%s\" not found for summon spell.\n" _C_ value);
			}
		} else if (!strcmp(value, "time-to-live")) {
			this->TTL = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "require-corpse")) {
			this->RequireCorpse = true;
			--j;
		} else if (!strcmp(value, "join-to-ai-force")) {
			this->JoinToAiForce = true;
			--j;
		} else {
			LuaError(l, "Unsupported summon tag: %s" _C_ value);
		}
	}
	// Now, checking value.
	if (this->UnitType == NULL) {
		LuaError(l, "Use a unittype for summon (with unit-type)");
	}
}

void CTileset::parse(lua_State *l)
{
	clear();

	this->pixelTileSize.x = 32;
	this->pixelTileSize.y = 32;

	const int args = lua_gettop(l);
	for (int j = 1; j < args; ++j) {
		const char *value = LuaToString(l, j);
		++j;

		if (!strcmp(value, "name")) {
			this->Name = LuaToString(l, j);
		} else if (!strcmp(value, "image")) {
			this->ImageFile = LuaToString(l, j);
		} else if (!strcmp(value, "size")) {
			CclGetPos(l, &this->pixelTileSize.x, &this->pixelTileSize.y, j);
		} else if (!strcmp(value, "slots")) {
			if (!lua_istable(l, j)) {
				LuaError(l, "incorrect argument");
			}
			parseSlots(l, j);
		} else {
			LuaError(l, "Unsupported tag: %s" _C_ value);
		}
	}
}

/**
**  Define race names
**
**  @param l  Lua state.
*/
static int CclDefineRaceNames(lua_State *l)
{
	PlayerRaces.Clean();
	int args = lua_gettop(l);
	for (int j = 0; j < args; ++j) {
		const char *value = LuaToString(l, j + 1);
		if (!strcmp(value, "race")) {
			++j;
			if (!lua_istable(l, j + 1)) {
				LuaError(l, "incorrect argument");
			}
			int subargs = lua_rawlen(l, j + 1);
			int i = PlayerRaces.Count++;
			for (int k = 0; k < subargs; ++k) {
				value = LuaToString(l, j + 1, k + 1);
				if (!strcmp(value, "name")) {
					++k;
					PlayerRaces.Name[i] = LuaToString(l, j + 1, k + 1);
				} else if (!strcmp(value, "display")) {
					++k;
					PlayerRaces.Display[i] = LuaToString(l, j + 1, k + 1);
				} else if (!strcmp(value, "visible")) {
					PlayerRaces.Visible[i] = 1;
				} else {
					LuaError(l, "Unsupported tag: %s" _C_ value);
				}
			}
		} else {
			LuaError(l, "Unsupported tag: %s" _C_ value);
		}
	}

	return 0;
}

/* virtual */ void Spell_Polymorph::Parse(lua_State *l, int startIndex, int endIndex)
{
	for (int j = startIndex; j < endIndex; ++j) {
		lua_rawgeti(l, -1, j + 1);
		const char *value = LuaToString(l, -1);
		lua_pop(l, 1);
		++j;
		if (!strcmp(value, "new-form")) {
			lua_rawgeti(l, -1, j + 1);
			value = LuaToString(l, -1);
			lua_pop(l, 1);
			this->NewForm = UnitTypeByIdent(value);
			if (!this->NewForm) {
				this->NewForm = 0;
				DebugPrint("unit type \"%s\" not found for polymorph spell.\n" _C_ value);
			}
			// FIXME: temp polymorphs? hard to do.
		} else if (!strcmp(value, "player-neutral")) {
			this->PlayerNeutral = 1;
			--j;
		} else if (!strcmp(value, "player-caster")) {
			this->PlayerNeutral = 2;
			--j;
		} else {
			LuaError(l, "Unsupported polymorph tag: %s" _C_ value);
		}
	}
	// Now, checking value.
	if (this->NewForm == NULL) {
		LuaError(l, "Use a unittype for polymorph (with new-form)");
	}
}

/* virtual */ void Spell_SpawnPortal::Parse(lua_State *l, int startIndex, int endIndex)
{
	for (int j = startIndex; j < endIndex; ++j) {
		lua_rawgeti(l, -1, j + 1);
		const char *value = LuaToString(l, -1);
		lua_pop(l, 1);
		++j;
		if (!strcmp(value, "portal-type")) {
			lua_rawgeti(l, -1, j + 1);
			value = LuaToString(l, -1);
			lua_pop(l, 1);
			this->PortalType = UnitTypeByIdent(value);
			if (!this->PortalType) {
				this->PortalType = 0;
				DebugPrint("unit type \"%s\" not found for spawn-portal.\n" _C_ value);
			}
		} else {
			LuaError(l, "Unsupported spawn-portal tag: %s" _C_ value);
		}
	}
	// Now, checking value.
	if (this->PortalType == NULL) {
		LuaError(l, "Use a unittype for spawn-portal (with portal-type)");
	}
}

/* virtual */ void Spell_AreaBombardment::Parse(lua_State *l, int startIndex, int endIndex)
{
	for (int j = startIndex; j < endIndex; ++j) {
		const char *value = LuaToString(l, -1, j + 1);
		++j;
		if (!strcmp(value, "fields")) {
			this->Fields = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "shards")) {
			this->Shards = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "damage")) {
			this->Damage = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "start-offset-x")) {
			this->StartOffsetX = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "start-offset-y")) {
			this->StartOffsetY = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "missile")) {
			value = LuaToString(l, -1, j + 1);
			this->Missile = MissileTypeByIdent(value);
			if (this->Missile == NULL) {
				DebugPrint("in area-bombardement : missile %s does not exist\n" _C_ value);
			}
		} else {
			LuaError(l, "Unsupported area-bombardment tag: %s" _C_ value);
		}
	}
	// Now, checking value.
	if (this->Missile == NULL) {
		LuaError(l, "Use a missile for area-bombardment (with missile)");
	}
}

/**
**  Define burning building missiles.
**
**  @param l  Lua state.
*/
static int CclDefineBurningBuilding(lua_State *l)
{
	for (std::vector<BurningBuildingFrame *>::iterator i = BurningBuildingFrames.begin();
		 i != BurningBuildingFrames.end(); ++i) {
		delete *i;
	}
	BurningBuildingFrames.clear();

	const int args = lua_gettop(l);
	for (int j = 0; j < args; ++j) {
		if (!lua_istable(l, j + 1)) {
			LuaError(l, "incorrect argument");
		}
		BurningBuildingFrame *ptr = new BurningBuildingFrame;
		const int subargs = lua_rawlen(l, j + 1);

		for (int k = 0; k < subargs; ++k) {
			const char *value = LuaToString(l, j + 1, k + 1);
			++k;

			if (!strcmp(value, "percent")) {
				ptr->Percent = LuaToNumber(l, j + 1, k + 1);
			} else if (!strcmp(value, "missile")) {
				ptr->Missile = MissileTypeByIdent(LuaToString(l, j + 1, k + 1));
			}
		}
		BurningBuildingFrames.insert(BurningBuildingFrames.begin(), ptr);
	}
	return 0;
}

/**
**  Load the SavedGameInfo Header
**
**  @param l  Lua state.
*/
static int CclSavedGameInfo(lua_State *l)
{
	const char *value;

	LuaCheckArgs(l, 1);
	LuaCheckTable(l, 1);

	lua_pushnil(l);
	while (lua_next(l, 1)) {
		value = LuaToString(l, -2);

		if (!strcmp(value, "SaveFile")) {
			if (strcpy_s(CurrentMapPath, sizeof(CurrentMapPath), LuaToString(l, -1)) != 0) {
				LuaError(l, "SaveFile too long");
			}
			std::string buf = StratagusLibPath;
			buf += "/";
			buf += LuaToString(l, -1);
			if (LuaLoadFile(buf) == -1) {
				DebugPrint("Load failed: %s\n" _C_ value);
			}
		} else if (!strcmp(value, "SyncHash")) {
			SyncHash = LuaToNumber(l, -1);
		} else if (!strcmp(value, "SyncRandSeed")) {
			SyncRandSeed = LuaToNumber(l, -1);
		} else {
			LuaError(l, "Unsupported tag: %s" _C_ value);
		}
		lua_pop(l, 1);
	}

	return 0;
}

/* virtual */ void CContentTypeLifeBar::Parse(lua_State *l)
{
	for (lua_pushnil(l); lua_next(l, -2); lua_pop(l, 1)) {
		const char *key = LuaToString(l, -2);
		if (!strcmp(key, "Variable")) {
			const char *const name = LuaToString(l, -1);
			this->Index = UnitTypeVar.VariableNameLookup[name];
			if (this->Index == -1) {
				LuaError(l, "unknown variable '%s'" _C_ name);
			}
		} else if (!strcmp(key, "Height")) {
			this->Height = LuaToNumber(l, -1);
		} else if (!strcmp(key, "Width")) {
			this->Width = LuaToNumber(l, -1);
		} else {
			LuaError(l, "'%s' invalid for method 'LifeBar' in DefinePanelContents" _C_ key);
		}
	}
	// Default value and checking errors.
	if (this->Height <= 0) {
		this->Height = 5; // Default value.
	}
	if (this->Width <= 0) {
		this->Width = 50; // Default value.
	}
	if (this->Index == -1) {
		LuaError(l, "variable undefined for LifeBar");
	}
}

/**
**  Get province data.
**
**  @param l  Lua state.
*/
static int CclGetProvinceData(lua_State *l)
{
	if (lua_gettop(l) < 2) {
		LuaError(l, "incorrect argument");
	}
	std::string province_name = LuaToString(l, 1);
	CProvince *province = GetProvince(province_name);
	if (!province) {
		LuaError(l, "Province \"%s\" doesn't exist." _C_ province_name.c_str());
	}
	const char *data = LuaToString(l, 2);

	if (!strcmp(data, "Name")) {
		lua_pushstring(l, province->Name.c_str());
		return 1;
	} else if (!strcmp(data, "World")) {
		if (province->World != nullptr) {
			lua_pushstring(l, province->World->Ident.c_str());
		} else {
			lua_pushstring(l, "");
		}
		return 1;
	} else if (!strcmp(data, "Water")) {
		lua_pushboolean(l, province->Water);
		return 1;
	} else if (!strcmp(data, "Coastal")) {
		lua_pushboolean(l, province->Coastal);
		return 1;
	} else {
		LuaError(l, "Invalid field: %s" _C_ data);
	}

	return 0;
}

/**
**  Parse an animation
*/
static CAnimation *ParseAnimation(lua_State *l, int idx)
{
	if (!lua_istable(l, idx)) {
		LuaError(l, "incorrect argument");
	}
	const int args = lua_rawlen(l, idx);

	if (args == 0) {
		return NULL;
	}
	Labels.clear();
	LabelsLater.clear();

	const char *str = LuaToString(l, idx, 1);

	CAnimation *firstAnim = ParseAnimationFrame(l, str);
	CAnimation *prev = firstAnim;
	for (int j = 1; j < args; ++j) {
		const char *str = LuaToString(l, idx, j + 1);
		CAnimation *anim = ParseAnimationFrame(l, str);
		prev->Next = anim;
		prev = anim;
	}
	prev->Next = firstAnim;
	FixLabels(l);
	return firstAnim;
}

/**
**  Parse the Condition for spell.
**
**  @param l         Lua state.
**  @param autocast  pointer to autocast to fill with data.
**
**  @note: autocast must be allocated. All data already in is LOST.
*/
static void CclSpellAutocast(lua_State *l, AutoCastInfo *autocast)
{
	if (!lua_istable(l, -1)) {
		LuaError(l, "incorrect argument");
	}
	const int args = lua_rawlen(l, -1);
	for (int j = 0; j < args; ++j) {
		const char *value = LuaToString(l, -1, j + 1);
		++j;
		if (!strcmp(value, "range")) {
			autocast->Range = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "min-range")) {
			autocast->MinRange = LuaToNumber(l, -1, j + 1);
		} else if (!strcmp(value, "position-autocast")) {
			lua_rawgeti(l, -1, j + 1);
			autocast->PositionAutoCast = new LuaCallback(l, -1);
			lua_pop(l, 1);
		} else if (!strcmp(value, "combat")) {
			autocast->Combat = Ccl2Condition(l, LuaToString(l, -1, j + 1));
		} else if (!strcmp(value, "attacker")) {
			autocast->Attacker = Ccl2Condition(l, LuaToString(l, -1, j + 1));
		} else if (!strcmp(value, "corpse")) {
			autocast->Corpse = Ccl2Condition(l, LuaToString(l, -1, j + 1));
		} else if (!strcmp(value, "priority")) {
			lua_rawgeti(l, -1, j + 1);
			if (!lua_istable(l, -1) || lua_rawlen(l, -1) != 2) {
				LuaError(l, "incorrect argument");
			}
			lua_rawgeti(l, -1, 1);
			std::string var = LuaToString(l, -1);
			int index = UnitTypeVar.VariableNameLookup[var.c_str()];// User variables
			if (index == -1) {
				if (!strcmp(var.c_str(), "Distance")) {
					index = ACP_DISTANCE;
				} else {
					fprintf(stderr, "Bad variable name '%s'\n", var.c_str());
					Exit(1);
				}
			}
			autocast->PriorytyVar = index;
			lua_pop(l, 1);
			autocast->ReverseSort = LuaToBoolean(l, -1, 2);

			lua_pop(l, 1);
		} else if (!strcmp(value, "condition")) {
			if (!autocast->Condition) {
				autocast->Condition = new ConditionInfo;
			}
			lua_rawgeti(l, -1, j + 1);
			CclSpellCondition(l, autocast->Condition);
			lua_pop(l, 1);
		} else {
			LuaError(l, "Unsupported autocast tag: %s" _C_ value);
		}
	}
}