bidi library
Implementation of the Bidi algorithm, as described in http://www.unicode.org/reports/tr9/tr9-17.html.
Converts logical strings to their equivalent visual representation. Persian, Hebrew and Arabic languages (and any other RTL language) are supported.
Classes
- BidiString
- Bidi String.
- Normalization
- Contains a set of functions for bidi text normalization (decomposition and composition).
- Paragraph
- Represents a paragraph in text.
Enums
- CharacterCategory
- Unicode character categories.
- CharacterType
- Types of BiDi characters (Table 4 in the Unicode BiDi algorithm).
- DecompositionType
- The type of Unicode character decomposition.
- DirectionOverride
- Used to determine current letter direction (Table 2 in the Unicode BiDi algorithm).
- LetterForm
- The four different available letter presentation forms.
- ShapeJoiningType
- Letter joining types of Persian letters.
Constants
-
characterCategories
→ const Map<
int, CharacterCategory> - Character Categories.
-
characterTypes
→ const Map<
int, CharacterType> - Character types.
-
decompositionTypes
→ const Map<
int, DecompositionType> - Decomposition Types.
Functions
-
compose(
String sequence) → int - Composes a sequence.
-
getCharacterType(
int character) → CharacterType - Returns the BiDi type for a given character.
-
getDecompositionMapping(
int character) → List< int> ? - Gets the Unicode decomposition mapping.
-
getDecompositionType(
int character) → DecompositionType? - Gets the Unicode decomposition type.
-
getShapeJoiningType(
int character) → ShapeJoiningType - Get joining types of Persian letters.
-
logicalToVisual(
String logicalString) → List< int> -
Implementation of the BIDI algorithm, as described in http://www.unicode.org/reports/tr9/tr9-17.html
logicalStringis the original logical-ordered string. Returns the visual representation of the string. -
logicalToVisual2(
String logicalString, List< int> indexes, List<int> lengths) → String -
Implementation of the BIDI algorithm, as described in http://www.unicode.org/reports/tr9/tr9-17.html
logicalStringis the original logical-ordered string.indexesImplies where the original characters are.lengthsImplies how many characters each original character occupies. Returns the visual representation of the string. -
splitStringToParagraphs(
String logicalString) → List< Paragraph> - Split the text into separate paragraphs.