ocean.text.Unicode

Provides case mapping Functions for Unicode Strings. As of now it is only 99 % complete, because it does not take into account Conditional case mappings. This means the Greek Letter Sigma will not be correctly case mapped at the end of a Word, and the Locales Lithuanian, Turkish and Azeri are not taken into account during Case Mappings. This means all in all around 12 Characters will not be mapped correctly under some circumstances.

ICU4j also does not handle these cases at the moment.

Unittests are written against output from ICU4j

This Module tries to minimize Memory allocation and usage. You can always pass the output buffer that should be used to the case mapping function, which will be resized if necessary.

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isDigit bool isDigit(dchar ch): Determines if a character is a digit. It returns true for decimal digits only.
isLetter bool isLetter(int ch): Determines if a character is a letter.
isLetterOrDigit bool isLetterOrDigit(int ch): Determines if a character is a letter or a decimal digit.
isLower bool isLower(dchar ch): Determines if a character is a lower case letter.
isPrintable bool isPrintable(dchar ch): Detemines if a character is a printable character as specified in the Unicode Standard.
isSpace bool isSpace(dchar ch): Detemines if a character is a Space character as specified in the Unicode Standard.
isTitle bool isTitle(dchar ch): Determines if a character is a title case letter. In case of combined letters, only the first is upper and the second is lower. Some of these special characters can be found in the croatian and greek language.
isUpper bool isUpper(dchar ch): Determines if a character is a upper case letter.
isWhitespace bool isWhitespace(dchar ch): Determines if a character is a Whitespace character. Whitespace characters are characters in the General Catetories Zs, Zl, Zp without the No Break spaces plus the control characters out of the ASCII range, that are used as spaces: TAB VT LF FF CR FS GS RS US NL
toFold char[] toFold(const(char)[] input, char[] output): Converts an Utf8 String to Folding case Folding case is used for case insensitive comparsions.
toFold wchar[] toFold(const(wchar)[] input, wchar[] output): Converts an Utf16 String to Folding case Folding case is used for case insensitive comparsions.
toFold dchar[] toFold(const(dchar)[] input, dchar[] output): Converts an Utf32 String to Folding case Folding case is used for case insensitive comparsions.
toLower char[] toLower(const(char)[] input, char[] output): Converts an Utf8 String to Lower case
toLower wchar[] toLower(const(wchar)[] input, wchar[] output): Converts an Utf16 String to Lower case
toLower dchar[] toLower(const(dchar)[] input, dchar[] output): Converts an Utf32 String to Lower case
toUpper char[] toUpper(const(char)[] input, char[] output): Converts an Utf8 String to Upper case
toUpper wchar[] toUpper(const(wchar)[] input, wchar[] output): Converts an Utf16 String to Upper case
toUpper dchar[] toUpper(const(dchar)[] input, dchar[] output): Converts an Utf32 String to Upper case

ocean.text.Unicode

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