Class: Fontisan::Validation::Woff2TableValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/fontisan/validation/woff2_table_validator.rb

Overview

Woff2TableValidator validates WOFF2 table directory entries

This validator checks each table entry for:

  • Valid tag (known or custom)

  • Valid transformation version

  • Transform length consistency

  • Table size validity

  • Flags byte correctness

Single Responsibility: WOFF2 table directory validation

Examples:

Validating WOFF2 tables

validator = Woff2TableValidator.new(rules)
issues = validator.validate(woff2_font)

Instance Method Summary collapse

Constructor Details

#initialize(rules) ⇒ Woff2TableValidator

Initialize WOFF2 table validator

Parameters:

  • rules (Hash) —

    Validation rules configuration



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# File 'lib/fontisan/validation/woff2_table_validator.rb', line 25

def initialize(rules)
  @rules = rules
  @woff2_config = rules["woff2_validation"] || {}
end

Instance Method Details

#validate(woff2_font) ⇒ Array<Hash>

Validate WOFF2 table directory

Parameters:

  • woff2_font (Woff2Font) —

    The WOFF2 font to validate

Returns:

  • (Array<Hash>) —

    Array of validation issues



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# File 'lib/fontisan/validation/woff2_table_validator.rb', line 34

def validate(woff2_font)
  issues = []

  woff2_font.table_entries.each do |entry|
    # Check tag validity
    issues.concat(check_tag(entry))

    # Check flags byte
    issues.concat(check_flags(entry))

    # Check transformation version
    issues.concat(check_transformation(entry))

    # Check table sizes
    issues.concat(check_sizes(entry))
  end

  # Check for duplicate tables
  issues.concat(check_duplicates(woff2_font.table_entries))

  issues
end