Added #

• Complete JIS X 4051:2004 compliance with all 16+ character classes
• Full-width bracket support (（）［］｛｝)
• Enhanced character class definitions for comprehensive Japanese typography

Fixed #

• ICU bindings memory management (proper calloc usage)
• Character class test coverage
• Missing full-width brackets in JIS X 4051 classes

Changed #

• Improved FFI memory handling to prevent leaks
• Updated documentation with complete character class tables

Added #

Core Features (Pure Dart)

• KinsokuProcessor: Japanese line breaking rules (kinsoku shori)
  • Line-start prohibition (行頭禁則, gyoto kinsoku)
  • Line-end prohibition (行末禁則, gyomatsu kinsoku)
  • Hanging characters (ぶら下げ, burasage) support
  • Pushing-in characters (追い込み, oikomi) support
  • Separation prohibition for paired characters (……, ‥‥, ――, etc.)
• CharacterClassifier: Character type identification
  • Support for kanji, hiragana, katakana, latin, numbers, punctuation, yakumono, space
  • Helper methods for small kana, long vowel marks, brackets
  • Iteration mark detection
• YakumonoAdjuster: Yakumono (約物) position and spacing adjustment
  • Half-width yakumono handling
  • Gyoto indent for opening brackets
  • Consecutive yakumono spacing adjustments
  • Vertical glyph support
• KerningProcessor: Kerning and spacing adjustments
  • Kerning pairs for Japanese punctuation
  • Oikomi adjustment calculations
• Position: Pure Dart 2D position class (alternative to Flutter's Offset)
• CharacterType: Enum for character classification

ICU-based Features (Optional)

• Complete JIS X 4051:2004 compliance ✨
  • ICUKinsokuProcessor: ICU break iterator-based line breaking
  • Full UAX #14 (Unicode Line Breaking Algorithm) support
  • Complete implementation of all 16+ JIS X 4051 character classes
  • JisX4051Classes: Comprehensive character class definitions
    • Class 1-2: Opening/Closing brackets (28+ characters)
    • Class 3-6: Delimiters and punctuation (15+ characters)
    • Class 7-9: Prolonged sound, small kana, iteration marks (32+ characters)
    • Class 10-12: Currency symbols and abbreviations (19+ characters)
    • Class 13-16: Dashes, ellipsis, combining marks, and special characters
  • Customizable break iterator rules
  • Configuration-based rule generation (KinsokuConfig)
  • Platform support: macOS, Linux, Windows (desktop/server)
• ICUBindings: FFI bindings for ICU library
  • Support for custom break iterator rules
  • UTF-16 text processing
  • Multi-platform library loading

Documentation #

• Comprehensive README with examples
• INTEGRATION_GUIDE.md: Integration guide for tategaki package
• Complete API documentation
• Example code for both Pure Dart and ICU-based usage
• JIS X 4051:2004 compliance test suite

Notes #

• This is a pure Dart package with no Flutter dependencies
• Core functionality works on all platforms (Flutter, Web, CLI, Server)
• ICU features require native ICU library installation (desktop/server only)
• Extracted and enhanced from the tategaki package for broader reusability