StringUtils主要提供编码类型转换，字符串转整型，浮点型等接口
class LPPAPI StringUtils { public: /// Maximum length of UTF encoding. static const int32_t MAX_ENCODING_UTF8_SIZE; /// Default character radix. static const int32_t CHARACTER_MAX_RADIX; public: /// Convert uft8 buffer into unicode. static int32_t toUnicode(const uint8_t* utf8, int32_t length, CharArray unicode); /// Convert uft8 buffer into unicode. static int32_t toUnicode(const uint8_t* utf8, int32_t length, const UnicodeResultPtr& unicodeResult); /// Convert uft8 buffer into unicode. static String toUnicode(const uint8_t* utf8, int32_t length); /// Convert uft8 string into unicode. static String toUnicode(const SingleString& s); /// Convert unicode buffer into uft8. static int32_t toUTF8(const wchar_t* unicode, int32_t length, ByteArray utf8); /// Convert unicode buffer into uft8. static int32_t toUTF8(const wchar_t* unicode, int32_t length, const UTF8ResultPtr& utf8Result); /// Convert unicode buffer into uft8. static SingleString toUTF8(const wchar_t* unicode, int32_t length); /// Convert unicode string into uft8. static SingleString toUTF8(const String& s); /// Convert given string to lower case using current locale static void toLower(String& str); /// Convert given string to lower case using current locale static String toLower(const String& str); /// Convert given string to upper case using current locale static void toUpper(String& str); /// Convert given string to upper case using current locale static String toUpper(const String& str); /// Compare two strings ignoring case differences static int32_t compareCase(const String& first, const String& second); /// Splits string using given delimiters static Collection<String> split(const String& str, const String& delim); /// Convert the given string to int32_t. static int32_t toInt(const String& value); /// Convert the given string to int64_t. static int64_t toLong(const String& value); /// Return given value as a long integer using base unit. static int64_t toLong(const String& value, int32_t base); /// Convert the given string to double. static double toDouble(const String& value); /// Compute the hash code from string. static int32_t hashCode(const String& value); /// Return given value as a string using base unit. static String toString(int64_t value, int32_t base); /// Convert any given type to a {@link String}. template <class TYPE> static String toString(const TYPE& value) { StringStream os; os << value; return os.str(); } };
