From 32e4032ee60cdd24bba3931e7f7969a6e2439ca5 Mon Sep 17 00:00:00 2001
From: Michael Overmeyer <movermeyer@stripe.com>
Date: Thu, 28 May 2026 14:56:39 -0400
Subject: [PATCH] Add `LanguageInfo` component

---
 CHANGELOG.md                          |  1 +
 lib/cldr/export.rb                    |  1 +
 lib/cldr/export/data.rb               |  1 +
 lib/cldr/export/data/language_info.rb | 55 +++++++++++++++++++++++++++
 lib/cldr/export/deep_validate_keys.rb |  4 ++
 5 files changed, 62 insertions(+)
 create mode 100644 lib/cldr/export/data/language_info.rb

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f372af8b..eb33cc31 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - Add `WeekData` component, [#229](https://github.com/ruby-i18n/ruby-cldr/pull/229)
 - Drop support for Ruby 2, [#265](https://github.com/ruby-i18n/ruby-cldr/pull/265)
 - Drop support for Ruby 3.0, [#268](https://github.com/ruby-i18n/ruby-cldr/pull/268)
+- Add `LanguageInfo` component
 
 ---
 
diff --git a/lib/cldr/export.rb b/lib/cldr/export.rb
index 3942c887..4ef19546 100644
--- a/lib/cldr/export.rb
+++ b/lib/cldr/export.rb
@@ -26,6 +26,7 @@ module Export
       :Aliases,
       :CountryCodes,
       :CurrencyDigitsAndRounding,
+      :LanguageInfo,
       :LikelySubtags,
       :Metazones,
       :NumberingSystems,
diff --git a/lib/cldr/export/data.rb b/lib/cldr/export/data.rb
index 4c0a632a..ed9aa784 100644
--- a/lib/cldr/export/data.rb
+++ b/lib/cldr/export/data.rb
@@ -16,6 +16,7 @@ module Data
       autoload :Delimiters,                "cldr/export/data/delimiters"
       autoload :Fields,                    "cldr/export/data/fields"
       autoload :Languages,                 "cldr/export/data/languages"
+      autoload :LanguageInfo,              "cldr/export/data/language_info"
       autoload :Layout,                    "cldr/export/data/layout"
       autoload :LikelySubtags,             "cldr/export/data/likely_subtags"
       autoload :Lists,                     "cldr/export/data/lists"
diff --git a/lib/cldr/export/data/language_info.rb b/lib/cldr/export/data/language_info.rb
new file mode 100644
index 00000000..6d9fc1aa
--- /dev/null
+++ b/lib/cldr/export/data/language_info.rb
@@ -0,0 +1,55 @@
+# frozen_string_literal: true
+
+module Cldr
+  module Export
+    module Data
+      class LanguageInfo < Base
+        def initialize
+          super(nil)
+          update(language_matching: language_matching)
+          deep_sort!
+        end
+
+        private
+
+        def language_matching
+          doc.xpath("//languageMatching/languageMatches").each_with_object({}) do |matches_node, ret|
+            matching_type = matches_node.attribute("type").to_s.underscore.to_sym
+            ret[matching_type] = {
+              paradigm_locales: paradigm_locales(matches_node),
+              match_variables: match_variables(matches_node),
+              language_matches: language_matches(matches_node),
+            }
+          end
+        end
+
+        def paradigm_locales(matches_node)
+          locales_node = matches_node.xpath("./paradigmLocales").first
+          return [] unless locales_node
+
+          locales_str = locales_node.attribute("locales").to_s
+          locales_str.split(" ").map { |locale| Cldr::Export.to_i18n(locale).to_s }
+        end
+
+        def match_variables(matches_node)
+          matches_node.xpath("./matchVariable").each_with_object({}) do |var_node, hash|
+            id = var_node.attribute("id").to_s
+            value = var_node.attribute("value").to_s
+            hash[id] = value
+          end
+        end
+
+        def language_matches(matches_node)
+          matches_node.xpath("./languageMatch").map do |match_node|
+            {
+              desired: Cldr::Export.to_i18n(match_node.attribute("desired")).to_s,
+              supported: Cldr::Export.to_i18n(match_node.attribute("supported")).to_s,
+              distance: match_node.attribute("distance").to_s.to_i,
+              oneway: match_node.attribute("oneway").to_s == "true",
+            }.reject { |_, v| v == false }
+          end
+        end
+      end
+    end
+  end
+end
diff --git a/lib/cldr/export/deep_validate_keys.rb b/lib/cldr/export/deep_validate_keys.rb
index e4a9a796..b3be6e08 100644
--- a/lib/cldr/export/deep_validate_keys.rb
+++ b/lib/cldr/export/deep_validate_keys.rb
@@ -25,6 +25,10 @@ def validate(hash, component, key_path = [])
       CountryCodes: [["country_codes", "."]],
       CurrencyDigitsAndRounding: [["."]],
       Fields: [["*", "relative", "."]],
+      LanguageInfo: [
+        ["language_matching", ".", "match_variables", "."],
+        ["language_matching", ".", "paradigm_locales", "."],
+      ],
       Languages: [["languages", "."]],
       LikelySubtags: [["subtags", "."]],
       Metazones: [