Class: Ucode::Parsers::CaseFolding

Inherits:
Base
  • Object
show all
Defined in:
lib/ucode/parsers/case_folding.rb

Overview

Parses ‘CaseFolding.txt` — case folding mappings for comparison.

Format (UAX #44):

cp; status; mapping; # name

‘status` is one of: C (common), F (full), S (simple), T (turkic). `mapping` is one or more space-separated hex codepoints.

Class Method Summary collapse

Methods inherited from Base

each_line, parse_codepoint_or_range, parse_field, parse_hex_cp

Class Method Details

.each_record(path) ⇒ Object

Yields one CaseFoldingRule per non-comment line. Returns a lazy Enumerator when called without a block.



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
 
# File 'lib/ucode/parsers/case_folding.rb', line 19

def each_record(path)
  return enum_for(:each_record, path) unless block_given?

  each_line(path) do |line|
    fields = line.fields
    next if fields.length < 3

    cp = parse_hex_cp(fields[0])
    status = fields[1]
    next if status.nil? || status.empty?

    yield Models::CaseFoldingRule.new(
      codepoint: cp,
      status: status,
      mapping_ids: parse_mapping(fields[2]),
      comment: line.comment
    )
  end

  nil
end