Module: Ucode::Unicode::MetadataWriter

Defined in:
lib/ucode/unicode/metadata_writer.rb

Overview

Generates frozen Ruby metadata modules from UCD text files.

Pure logic: takes a UCD directory path and a version string, returns the Ruby source for a metadata module. The CLI command (EmitMetadataCommand) writes the output to disk.

This is the build-time tool that produces the frozen constants consumers query at runtime via Catalog. Run it when a new Unicode version is adopted:

bin/ucode fetch ucd 18.0.0
bin/ucode emit-metadata --version 18.0.0
# commit the generated file + add to SUPPORTED_VERSIONS

Class Method Summary collapse

Class Method Details

.generate(ucd_dir:, version:) ⇒ String

Returns Ruby source for the metadata module.

Parameters:

  • ucd_dir (String, Pathname) —

    path to the unpacked UCD

  • version (String) —

    e.g. "17.0.0"

Returns:

  • (String) —

    Ruby source for the metadata module



30
31
32
33
34
35
36
37
38
 
# File 'lib/ucode/unicode/metadata_writer.rb', line 30

def generate(ucd_dir:, version:)
  assigned_count, by_plane = compute_assigned(ucd_dir)
  blocks = parse_blocks(ucd_dir)
  mod_name = version_to_module(version)

  build_source(version: version, mod_name: mod_name,
               assigned_count: assigned_count,
               by_plane: by_plane, blocks: blocks)
end

.version_to_filename(version) ⇒ String

Returns e.g. "v17_0_0".

Parameters:

  • version (String) —

    e.g. "17.0.0"

Returns:

  • (String) —

    e.g. "v17_0_0"



42
43
44
 
# File 'lib/ucode/unicode/metadata_writer.rb', line 42

def version_to_filename(version)
  "v#{version.tr('.', '_').downcase}"
end

.version_to_module(version) ⇒ String

Returns e.g. "V17_0_0".

Parameters:

  • version (String) —

    e.g. "17.0.0"

Returns:

  • (String) —

    e.g. "V17_0_0"



48
49
50
 
# File 'lib/ucode/unicode/metadata_writer.rb', line 48

def version_to_module(version)
  "V#{version.tr('.', '_')}"
end