C++ AString::length方法代码示例

AString cWebAdmin::GetHTMLEscapedString(const AString & a_Input)
{
	AString dst;
	dst.reserve(a_Input.length());

	// Loop over input and substitute HTML characters for their alternatives:
	size_t len = a_Input.length();
	for (size_t i = 0; i < len; i++)
	{
		switch (a_Input[i])
		{
			case '&':  dst.append("&amp;");  break;
			case '\'': dst.append("&apos;"); break;
			case '"':  dst.append("&quot;"); break;
			case '<':  dst.append("&lt;");   break;
			case '>':  dst.append("&gt;");   break;
			default:
			{
				dst.push_back(a_Input[i]);
				break;
			}
		}  // switch (a_Input[i])
	}  // for i - a_Input[]

	return dst;
}

		virtual bool Command(const AString & a_Command, const cPlugin * a_Plugin, const AString & a_Permission, const AString & a_HelpString) override
		{
			if (!a_HelpString.empty())
			{
				m_Commands.push_back(AStringPair(a_Command, a_HelpString));
				if (m_MaxLen < a_Command.length())
				{
					m_MaxLen = a_Command.length();
				}
			}
			return false;
		}

int cParsedNBT::FindTagByPath(int a_Tag, const AString & a_Path) const
{
	if (a_Tag < 0)
	{
		return -1;
	}
	size_t Begin = 0;
	size_t Length = a_Path.length();
	int Tag = a_Tag;
	for (size_t i = 0; i < Length; i++)
	{
		if (a_Path[i] != '\\')
		{
			continue;
		}
		Tag = FindChildByName(Tag, a_Path.c_str() + Begin, i - Begin - 1);
		if (Tag < 0)
		{
			return -1;
		}
		Begin = i + 1;
	}  // for i - a_Path[]
	
	if (Begin < Length)
	{
		Tag = FindChildByName(Tag, a_Path.c_str() + Begin, Length - Begin);
	}
	return Tag;
}

		cCallback (const AString & a_PlayerName) :
			m_BestRating(0),
			m_NameLength(a_PlayerName.length()),
			m_PlayerName(a_PlayerName),
			m_BestMatch(),
			m_NumMatches(0)
		{}

void cSHA1Checksum::DigestToJava(const Checksum & a_Digest, AString & a_Out)
{
	Checksum Digest;
	memcpy(Digest, a_Digest, sizeof(Digest));
	
	bool IsNegative = (Digest[0] >= 0x80);
	if (IsNegative)
	{
		// Two's complement:
		bool carry = true;  // Add one to the whole number
		for (int i = 19; i >= 0; i--)
		{
			Digest[i] = ~Digest[i];
			if (carry)
			{
				carry = (Digest[i] == 0xff);
				Digest[i]++;
			}
		}
	}
	a_Out.clear();
	a_Out.reserve(40);
	for (int i = 0; i < 20; i++)
	{
		AppendPrintf(a_Out, "%02x", Digest[i]);
	}
	while ((a_Out.length() > 0) && (a_Out[0] == '0'))
	{
		a_Out.erase(0, 1);
	}
	if (IsNegative)
	{
		a_Out.insert(0, "-");
	}
}

void cSocketInputStream::Error(const AString & a_ErrorMsg)
{
	send(m_Socket, a_ErrorMsg.c_str(), static_cast<int>(a_ErrorMsg.length()), 0);
	static const char EndLine[] = "\n";
	send(m_Socket, EndLine, sizeof(EndLine) - 1, 0);

}

// Converts a raw 160-bit SHA1 digest into a Java Hex representation
// According to http://wiki.vg/wiki/index.php?title=Protocol_Encryption&oldid=2802
static void DigestToJava(byte a_Digest[20], AString & a_Out)
{
	bool IsNegative = (a_Digest[0] >= 0x80);
	if (IsNegative)
	{
		// Two's complement:
		bool carry = true;  // Add one to the whole number
		for (int i = 19; i >= 0; i--)
		{
			a_Digest[i] = ~a_Digest[i];
			if (carry)
			{
				carry = (a_Digest[i] == 0xff);
				a_Digest[i]++;
			}
		}
	}
	a_Out.clear();
	a_Out.reserve(40);
	for (int i = 0; i < 20; i++)
	{
		AppendPrintf(a_Out, "%02x", a_Digest[i]);
	}
	while ((a_Out.length() > 0) && (a_Out[0] == '0'))
	{
		a_Out.erase(0, 1);
	}
	if (IsNegative)
	{
		a_Out.insert(0, "-");
	}
}

AString GetOSErrorString( int a_ErrNo)
{
	char buffer[ 1024 ];
	AString Out;

	#ifdef _WIN32

	FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, a_ErrNo, 0, buffer, ARRAYCOUNT(buffer), NULL);
	Printf(Out, "%d: %s", a_ErrNo, buffer);
	if (!Out.empty() && (Out[Out.length() - 1] == '\n'))
	{
		Out.erase(Out.length() - 2);
	}
	return Out;
	
	#else  // _WIN32
	
	// According to http://linux.die.net/man/3/strerror_r there are two versions of strerror_r():
	
	#if !defined(__APPLE__) && ( _GNU_SOURCE) && !defined(ANDROID_NDK)  // GNU version of strerror_r()
	
	char * res = strerror_r( errno, buffer, ARRAYCOUNT(buffer));
	if (res != NULL)
	{
		Printf(Out, "%d: %s", a_ErrNo, res);
		return Out;
	}
	
	#else  // XSI version of strerror_r():
	
	int res = strerror_r( errno, buffer, ARRAYCOUNT(buffer));
	if (res == 0)
	{
		Printf(Out, "%d: %s", a_ErrNo, buffer);
		return Out;
	}
	
	#endif  // strerror_r() version
	
	else
	{
		Printf(Out, "Error %d while getting error string for error #%d!", errno, a_ErrNo);
		return Out;
	}
	
	#endif  // else _WIN32
}

		cCallback (const AString & a_PlayerName, cPlayerListCallback & a_Callback) 
			: m_Callback( a_Callback )
			, BestMatch( NULL )
			, BestRating( 0 )
			, NumMatches( 0 )
			, NameLength( a_PlayerName.length() )
			, PlayerName( a_PlayerName )
		{}

cPiece::cVerticalStrategyPtr CreateVerticalStrategyFromString(const AString & a_StrategyDesc, bool a_LogWarnings)
{
	// Break apart the strategy class, the first parameter before the first pipe char:
	auto idxPipe = a_StrategyDesc.find('|');
	if (idxPipe == AString::npos)
	{
		idxPipe = a_StrategyDesc.length();
	}
	AString StrategyClass = a_StrategyDesc.substr(0, idxPipe);

	// Create a strategy class based on the class string:
	cPiece::cVerticalStrategyPtr Strategy;
	if (NoCaseCompare(StrategyClass, "Fixed") == 0)
	{
		Strategy = std::make_shared<cVerticalStrategyFixed>();
	}
	else if (NoCaseCompare(StrategyClass, "Range") == 0)
	{
		Strategy = std::make_shared<cVerticalStrategyRange>();
	}
	else if (NoCaseCompare(StrategyClass, "TerrainTop") == 0)
	{
		Strategy = std::make_shared<cVerticalStrategyTerrainTop>();
	}
	else if (NoCaseCompare(StrategyClass, "TerrainOrOceanTop") == 0)
	{
		Strategy = std::make_shared<cVerticalStrategyTerrainOrOceanTop>();
	}
	else
	{
		return nullptr;
	}

	// Initialize the strategy's parameters:
	AString Params;
	if (idxPipe < a_StrategyDesc.length())
	{
		Params = a_StrategyDesc.substr(idxPipe + 1);
	}
	if (!Strategy->InitializeFromString(Params, a_LogWarnings))
	{
		return nullptr;
	}

	return Strategy;
}

void cMobHeadEntity::SetOwner(const AString & a_Owner)
{
	if ((a_Owner.length() > 16) || (m_Type != SKULL_TYPE_PLAYER))
	{
		return;
	}
	m_Owner = a_Owner;
}

int cFile::Printf(const char * a_Fmt, ...)
{
	AString buf;
	va_list args;
	va_start(args, a_Fmt);
	AppendVPrintf(buf, a_Fmt, args);
	va_end(args);
	return Write(buf.c_str(), buf.length());
}

AStringVector cFile::GetFolderContents(const AString & a_Folder)
{
	AStringVector AllFiles;

	#ifdef _WIN32

		// If the folder name doesn't contain the terminating slash / backslash, add it:
		AString FileFilter = a_Folder;
		if (
			!FileFilter.empty() &&
			(FileFilter[FileFilter.length() - 1] != '\\') &&
			(FileFilter[FileFilter.length() - 1] != '/')
		)
		{
			FileFilter.push_back('\\');
		}

		// Find all files / folders:
		FileFilter.append("*.*");
		HANDLE hFind;
		WIN32_FIND_DATAA FindFileData;
		if ((hFind = FindFirstFileA(FileFilter.c_str(), &FindFileData)) != INVALID_HANDLE_VALUE)
		{
			do
			{
				AllFiles.push_back(FindFileData.cFileName);
			} while (FindNextFileA(hFind, &FindFileData));
			FindClose(hFind);
		}

	#else  // _WIN32

		DIR * dp;
		AString Folder = a_Folder;
		if (Folder.empty())
		{
			Folder = ".";
		}
		if ((dp = opendir(Folder.c_str())) == nullptr)
		{
			LOGERROR("Error (%i) opening directory \"%s\"\n", errno, Folder.c_str());
		}
		else
		{
			struct dirent *dirp;
			while ((dirp = readdir(dp)) != nullptr)
			{
				AllFiles.push_back(dirp->d_name);
			}
			closedir(dp);
		}

	#endif  // else _WIN32

	return AllFiles;
}

AString cPlayer::GetUUIDFileName(const AString & a_UUID)
{
	AString UUID = cMojangAPI::MakeUUIDDashed(a_UUID);
	ASSERT(UUID.length() == 36);
	
	AString res("players/");
	res.append(UUID, 0, 2);
	res.push_back('/');
	res.append(UUID, 2, AString::npos);
	res.append(".json");
	return res;
}

void cMonster::SetCustomName(const AString & a_CustomName)
{
	m_CustomName = a_CustomName;

	// The maximal length is 64
	if (a_CustomName.length() > 64)
	{
		m_CustomName = a_CustomName.substr(0, 64);
	}

	if (m_World != nullptr)
	{
		m_World->BroadcastEntityMetadata(*this);
	}
}