C++ AStringVector::empty方法代码示例

bool cPluginManager::ExecuteConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output, const AString & a_Command)
{
	if (a_Split.empty())
	{
		return false;
	}

	CommandMap::iterator cmd = m_ConsoleCommands.find(a_Split[0]);
	if (cmd == m_ConsoleCommands.end())
	{
		// Command not found
		// Still notify the plugins (so that plugins such as Aliases can intercept unknown commands).
		CommandResult res = crBlocked;
		CallHookExecuteCommand(nullptr, a_Split, a_Command, res);
		return (res == crExecuted);
	}

	if (cmd->second.m_Plugin == nullptr)
	{
		// This is a built-in command
		return false;
	}

	// Ask plugins first if a command is okay to execute the console command:
	CommandResult res = crBlocked;
	if (CallHookExecuteCommand(nullptr, a_Split, a_Command, res))
	{
		return (res == crExecuted);
	}

	return cmd->second.m_Handler->ExecuteCommand(a_Split, nullptr, a_Command, &a_Output);
}

std::pair<AString, AString> cWebPlugin::GetTabNameForRequest(const HTTPRequest & a_Request)
{
	AStringVector Split = StringSplit(a_Request.Path, "/");
	if (Split.empty())
	{
		return std::make_pair(AString(), AString());
	}

	cCSLock Lock(m_CSTabs);
	cTabPtr Tab;
	if (Split.size() > 2)  // If we got the tab name, show that page
	{
		for (auto itr = m_Tabs.cbegin(), end = m_Tabs.cend(); itr != end; ++itr)
		{
			if ((*itr)->m_SafeTitle.compare(Split[2]) == 0)  // This is the one!
			{
				return std::make_pair((*itr)->m_Title, (*itr)->m_SafeTitle);
			}
		}
		// Tab name not found, display an "empty" page:
		return std::make_pair(AString(), AString());
	}

	// Show the first tab:
	if (!m_Tabs.empty())
	{
		return std::make_pair(m_Tabs.front()->m_SafeTitle, m_Tabs.front()->m_SafeTitle);
	}

	// No tabs at all:
	return std::make_pair(AString(), AString());
}

bool cCraftingRecipes::ParseItem(const AString & a_String, cItem & a_Item)
{
	// The caller provides error logging
	
	AStringVector Split = StringSplit(a_String, "^");
	if (Split.empty())
	{
		return false;
	}
	
	if (!StringToItem(Split[0], a_Item))
	{
		return false;
	}
	
	if (Split.size() > 1)
	{
		AString Damage = TrimString(Split[1]);
		if (!StringToInteger<short>(Damage.c_str(), a_Item.m_ItemDamage))
		{
			// Parsing the number failed
			return false;
		}
	}
	
	// Success
	return true;
}

bool cProbabDistrib::SetDefString(const AString & a_DefString)
{
	AStringVector Points = StringSplitAndTrim(a_DefString, ";");
	if (Points.empty())
	{
		return false;
	}
	cPoints Pts;
	for (AStringVector::const_iterator itr = Points.begin(), end = Points.end(); itr != end; ++itr)
	{
		AStringVector Split = StringSplitAndTrim(*itr, ",");
		if (Split.size() != 2)
		{
			// Bad format
			return false;
		}
		int Value = atoi(Split[0].c_str());
		int Prob  = atoi(Split[1].c_str());
		if (
			((Value == 0) && (Split[0] != "0")) ||
			((Prob  == 0) && (Split[1] != "0"))
		)
		{
			// Number parse error
			return false;
		}
		Pts.push_back(cPoint(Value, Prob));
	}  // for itr - Points[]
	
	SetPoints(Pts);
	return true;
}

bool cPluginManager::ExecuteConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output)
{
	if (a_Split.empty())
	{
		return false;
	}
	
	CommandMap::iterator cmd = m_ConsoleCommands.find(a_Split[0]);
	if (cmd == m_ConsoleCommands.end())
	{
		// Command not found
		return false;
	}
	
	if (cmd->second.m_Plugin == NULL)
	{
		// This is a built-in command
		return false;
	}
	
	// Ask plugins first if a command is okay to execute the console command:
	if (CallHookExecuteCommand(NULL, a_Split))
	{
		a_Output.Out("Command \"%s\" was stopped by the HOOK_EXECUTE_COMMAND hook", a_Split[0].c_str());
		return false;
	}

	return cmd->second.m_Plugin->HandleConsoleCommand(a_Split, a_Output);	
}

void cServer::ExecuteConsoleCommand(const AString & a_Cmd, cCommandOutputCallback & a_Output)
{
	AStringVector split = StringSplit(a_Cmd, " ");
	if (split.empty())
	{
		return;
	}
	
	// Special handling: "stop" and "restart" are built in
	if ((split[0].compare("stop") == 0) || (split[0].compare("restart") == 0))
	{
		return;
	}
	
	// "help" and "reload" are to be handled by MCS, so that they work no matter what
	if (split[0] == "help")
	{
		PrintHelp(split, a_Output);
		return;
	}
	if (split[0] == "reload")
	{
		cPluginManager::Get()->ReloadPlugins();
		return;
	}
	
	// There is currently no way a plugin can do these (and probably won't ever be):
	if (split[0].compare("chunkstats") == 0)
	{
		cRoot::Get()->LogChunkStats(a_Output);
		a_Output.Finished();
		return;
	}
	#if defined(_MSC_VER) && defined(_DEBUG) && defined(ENABLE_LEAK_FINDER)
	if (split[0].compare("dumpmem") == 0)
	{
		LeakFinderXmlOutput Output("memdump.xml");
		DumpUsedMemory(&Output);
		return;
	}
	
	if (split[0].compare("killmem") == 0)
	{
		while (true)
		{
			new char[100 * 1024 * 1024];  // Allocate and leak 100 MiB in a loop -> fill memory and kill MCS
		}
	}
	#endif
	
	if (cPluginManager::Get()->ExecuteConsoleCommand(split, a_Output))
	{
		a_Output.Finished();
		return;
	}
	
	a_Output.Out("Unknown command, type 'help' for all commands.");
	a_Output.Finished();
}

AStringVector ReadUpgradeIniPorts(
	cSettingsRepositoryInterface & a_Settings,
	const AString & a_KeyName,
	const AString & a_PortsValueName,
	const AString & a_OldIPv4ValueName,
	const AString & a_OldIPv6ValueName,
	const AString & a_DefaultValue
)
{
	// Read the regular value, but don't use the default (in order to detect missing value for upgrade):

	AStringVector Ports;

	for (auto pair : a_Settings.GetValues(a_KeyName))
	{
		if (pair.first != a_PortsValueName)
		{
			continue;
		}
		AStringVector temp = StringSplitAndTrim(pair.second, ";,");
		Ports.insert(Ports.end(), temp.begin(), temp.end());
	}

	if (Ports.empty())
	{
		// Historically there were two separate entries for IPv4 and IPv6, merge them and migrate:
		AString Ports4 = a_Settings.GetValue(a_KeyName, a_OldIPv4ValueName, a_DefaultValue);
		AString Ports6 = a_Settings.GetValue(a_KeyName, a_OldIPv6ValueName);
		Ports = MergeStringVectors(StringSplitAndTrim(Ports4, ";,"), StringSplitAndTrim(Ports6, ";,"));
		a_Settings.DeleteValue(a_KeyName, a_OldIPv4ValueName);
		a_Settings.DeleteValue(a_KeyName, a_OldIPv6ValueName);

		// If those weren't present or were empty, use the default:"
		if (Ports.empty())
		{
			Ports = StringSplitAndTrim(a_DefaultValue, ";,");
		}
		a_Settings.SetValue(a_KeyName, a_PortsValueName, StringsConcat(Ports, ','));
	}

	return Ports;
}

bool cPlugin_NewLua::HandleConsoleCommand(const AStringVector & a_Split, cCommandOutputCallback & a_Output)
{
	ASSERT(!a_Split.empty());
	CommandMap::iterator cmd = m_ConsoleCommands.find(a_Split[0]);
	if (cmd == m_ConsoleCommands.end())
	{
		LOGWARNING("Console command handler is registered in cPluginManager but not in cPlugin, wtf? Console command \"%s\", plugin \"%s\".",
			a_Split[0].c_str(), GetName().c_str()
		);
		return false;
	}
	
	cCSLock Lock(m_CriticalSection);
	
	// Push the function to be called:
	lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, cmd->second);  // same as lua_getref()
	
	// Push the split:
	lua_createtable(m_LuaState, a_Split.size(), 0);
	int newTable = lua_gettop(m_LuaState);
	int index = 1;
	std::vector<std::string>::const_iterator iter = a_Split.begin(), end = a_Split.end();
	while(iter != end)
	{
		tolua_pushstring(m_LuaState, (*iter).c_str());
		lua_rawseti(m_LuaState, newTable, index);
		++iter;
		++index;
	}
	
	// Call function:
	int s = lua_pcall(m_LuaState, 1, 2, 0);
	if (report_errors(m_LuaState, s))
	{
		LOGERROR("Lua error. Stack size: %i", lua_gettop(m_LuaState));
		return false;
	}
	
	// Handle return values:
	if (lua_isstring(m_LuaState, -1))
	{
		AString str = tolua_tocppstring(m_LuaState, -1, "");
		a_Output.Out(str);
	}
	bool RetVal = (tolua_toboolean(m_LuaState, -2, 0) > 0);
	lua_pop(m_LuaState, 2);  // Pop return values
	
	return RetVal;
}

bool cPluginLua::HandleCommand(const AStringVector & a_Split, cPlayer & a_Player, const AString & a_FullCommand)
{
	ASSERT(!a_Split.empty());
	CommandMap::iterator cmd = m_Commands.find(a_Split[0]);
	if (cmd == m_Commands.end())
	{
		LOGWARNING("Command handler is registered in cPluginManager but not in cPlugin, wtf? Command \"%s\".", a_Split[0].c_str());
		return false;
	}

	cCSLock Lock(m_CriticalSection);
	bool res = false;
	m_LuaState.Call(cmd->second, a_Split, &a_Player, a_FullCommand, cLuaState::Return, res);
	return res;
}

	void AddToMap(const AString & a_Name, const AString & a_Value)
	{
		AStringVector Split = StringSplit(a_Value, ":");
		if (Split.size() == 1)
		{
			Split = StringSplit(a_Value, "^");
		}
		if (Split.empty())
		{
			return;
		}
		short ItemType = (short)atoi(Split[0].c_str());
		short ItemDamage = (Split.size() > 1) ? (short)atoi(Split[1].c_str()) : -1;
		m_Map[a_Name] = std::make_pair(ItemType, ItemDamage);
	}

	bool ResolveItem(const AString & a_ItemName, cItem & a_Item)
	{
		// Split into parts divided by either ':' or '^'
		AStringVector Split = StringSplitAndTrim(a_ItemName, ":^");
		if (Split.empty())
		{
			return false;
		}

		ItemMap::iterator itr = m_Map.find(Split[0]);
		if (itr != m_Map.end())
		{
			// Resolved as a string, assign the type and the default damage / count
			a_Item.m_ItemType = itr->second.first;
			a_Item.m_ItemDamage = itr->second.second;
			if (a_Item.m_ItemDamage == -1)
			{
				a_Item.m_ItemDamage = 0;
			}
		}
		else
		{
			// Not a resolvable string, try pure numbers: "45:6", "45^6" etc.
			a_Item.m_ItemType = (short)atoi(Split[0].c_str());
			if ((a_Item.m_ItemType == 0) && (Split[0] != "0"))
			{
				// Parsing the number failed
				return false;
			}
		}
		
		// Parse the damage, if present:
		if (Split.size() < 2)
		{
			// Not present, set the item as valid and return success:
			a_Item.m_ItemCount = 1;
			return true;
		}
		
		a_Item.m_ItemDamage = (short)atoi(Split[1].c_str());
		if ((a_Item.m_ItemDamage == 0) && (Split[1] != "0"))
		{
			// Parsing the number failed
			return false;
		}
		a_Item.m_ItemCount = 1;
		return true;
	}

bool cPlugin_NewLua::HandleCommand(const AStringVector & a_Split, cPlayer * a_Player)
{
	ASSERT(!a_Split.empty());
	CommandMap::iterator cmd = m_Commands.find(a_Split[0]);
	if (cmd == m_Commands.end())
	{
		LOGWARNING("Command handler is registered in cPluginManager but not in cPlugin, wtf? Command \"%s\".", a_Split[0].c_str());
		return false;
	}
	
	cCSLock Lock(m_CriticalSection);
	
	// Push the function to be called:
	lua_rawgeti(m_LuaState, LUA_REGISTRYINDEX, cmd->second);  // same as lua_getref()
	
	// Push the split:
	lua_createtable(m_LuaState, a_Split.size(), 0);
	int newTable = lua_gettop(m_LuaState);
	int index = 1;
	std::vector<std::string>::const_iterator iter = a_Split.begin(), end = a_Split.end();
	while(iter != end)
	{
		tolua_pushstring(m_LuaState, (*iter).c_str());
		lua_rawseti(m_LuaState, newTable, index);
		++iter;
		++index;
	}
	
	// Push player:
	tolua_pushusertype(m_LuaState, a_Player, "cPlayer");
	
	// Call function:
	int s = lua_pcall(m_LuaState, 2, 1, 0);
	if (report_errors(m_LuaState, s))
	{
		LOGERROR("LUA error in %s. Stack size: %i", __FUNCTION__, lua_gettop(m_LuaState));
		return false;
	}
	
	// Handle return value:
	bool RetVal = (tolua_toboolean(m_LuaState, -1, 0) > 0);
	lua_pop(m_LuaState, 1);  // Pop return value
	
	return RetVal;
}

	bool ResolveItem(const AString & a_ItemName, cItem & a_Item)
	{
		ItemMap::iterator itr = m_Map.find(a_ItemName);
		if (itr != m_Map.end())
		{
			a_Item.m_ItemType = itr->second.first;
			a_Item.m_ItemDamage = itr->second.second;
			if (a_Item.m_ItemDamage == -1)
			{
				a_Item.m_ItemDamage = 0;
			}
			a_Item.m_ItemCount = 1;
			return true;
		}

		// Not a resolvable string, try pure numbers: "45:6", "45^6" etc.
		AStringVector Split = StringSplit(a_ItemName, ":");
		if (Split.size() == 1)
		{
			Split = StringSplit(a_ItemName, "^");
		}
		if (Split.empty())
		{
			return false;
		}
		a_Item.m_ItemType = (short)atoi(Split[0].c_str());
		if ((a_Item.m_ItemType == 0) && (Split[0] != "0"))
		{
			// Parsing the number failed
			return false;
		}
		if (Split.size() < 2)
		{
			a_Item.m_ItemCount = 1;
			return true;
		}
		a_Item.m_ItemDamage = atoi(Split[1].c_str());
		if ((a_Item.m_ItemDamage == 0) && (Split[1] != "0"))
		{
			// Parsing the number failed
			return false;
		}
		a_Item.m_ItemCount = 1;
		return true;
	}

void cMojangAPI::Update(void)
{
	Int64 LimitDateTime = time(nullptr) - MAX_AGE;

	// Re-query all playernames that are stale:
	AStringVector PlayerNames;
	{
		cCSLock Lock(m_CSNameToUUID);
		for (const auto & NameToUUID : m_NameToUUID)
		{
			if (NameToUUID.second.m_DateTime < LimitDateTime)
			{
				PlayerNames.push_back(NameToUUID.first);
			}
		}  // for itr - m_NameToUUID[]
	}
	if (!PlayerNames.empty())
	{
		LOG("cMojangAPI: Updating name-to-uuid cache for %u names", static_cast<unsigned>(PlayerNames.size()));
		QueryNamesToUUIDs(PlayerNames);
	}

	// Re-query all profiles that are stale:
	std::vector<cUUID> ProfileUUIDs;
	{
		cCSLock Lock(m_CSUUIDToProfile);
		for (auto & UUIDToProfile : m_UUIDToProfile)
		{
			if (UUIDToProfile.second.m_DateTime < LimitDateTime)
			{
				ProfileUUIDs.push_back(UUIDToProfile.first);
			}
		}  // for itr - m_UUIDToProfile[]
	}
	if (!ProfileUUIDs.empty())
	{
		LOG("cMojangAPI: Updating uuid-to-profile cache for %u uuids", static_cast<unsigned>(ProfileUUIDs.size()));
		for (const auto & UUID : ProfileUUIDs)
		{
			QueryUUIDToProfile(UUID);
		}
	}
}

void cProtocol132::SendTabCompletionResults(const AStringVector & a_Results)
{
	if (a_Results.empty())
	{
		// No results to send
		return;
	}
	
	AString Serialized(a_Results[0]);
	for (AStringVector::const_iterator itr = a_Results.begin() + 1, end = a_Results.end(); itr != end; ++itr)
	{
		Serialized.push_back(0);
		Serialized.append(*itr);
	}  // for itr - a_Results[]
	
	cCSLock Lock(m_CSPacket);
	WriteByte(PACKET_TAB_COMPLETION);
	WriteString(Serialized);
	Flush();
}