Add generate-{cask,formula}-api commands

These replace the similar scripts in formulae.brew.sh.

Part of #14730.

Library/Homebrew/brew.sh

@@ -802,6 +802,8 @@ then
       edit
       extract
       formula
+      generate-cask-api
+      generate-formula-api
       livecheck
       pr-pull
       pr-upload

Library/Homebrew/dev-cmd/generate-cask-api.rb

@@ -0,0 +1,62 @@
+# typed: true
+# frozen_string_literal: true
+
+require "cli/parser"
+require "cask/cask"
+
+module Homebrew
+  extend T::Sig
+
+  module_function
+
+  sig { returns(CLI::Parser) }
+  def generate_cask_api_args
+    Homebrew::CLI::Parser.new do
+      description <<~EOS
+        Generates Cask API data files for formulae.brew.sh.
+      EOS
+
+      named_args :none
+    end
+  end
+
+  JSON_TEMPLATE = <<~EOS
+    ---
+    layout: cask_json
+    ---
+    {{ content }}
+  EOS
+
+  def html_template(title)
+    <<~EOS
+      ---
+      title: #{title}
+      layout: cask
+      ---
+      {{ content }}
+    EOS
+  end
+
+  def generate_cask_api
+    generate_cask_api_args.parse
+
+    tap = Tap.fetch("homebrew/cask")
+
+    directories = ["_data/cask", "api/cask", "api/cask-source", "cask"].freeze
+    FileUtils.rm_rf directories
+    FileUtils.mkdir_p directories
+
+    Cask::Cask.generating_hash!
+
+    tap.cask_files.each do |path|
+      cask = Cask::CaskLoader.load(path)
+      name = cask.token
+      json = JSON.pretty_generate(cask.to_hash_with_variations)
+
+      File.write("_data/cask/#{name}.json", "#{json}\n")
+      File.write("api/cask/#{name}.json", JSON_TEMPLATE)
+      File.write("api/cask-source/#{name}.rb", path.read)
+      File.write("cask/#{name}.html", html_template(name))
+    end
+  end
+end

Library/Homebrew/dev-cmd/generate-formula-api.rb

@@ -0,0 +1,65 @@
+# typed: true
+# frozen_string_literal: true
+
+require "cli/parser"
+require "formula"
+
+module Homebrew
+  extend T::Sig
+
+  module_function
+
+  sig { returns(CLI::Parser) }
+  def generate_formula_api_args
+    Homebrew::CLI::Parser.new do
+      description <<~EOS
+        Generates Formula API data files for formulae.brew.sh.
+      EOS
+
+      named_args :none
+    end
+  end
+
+  JSON_TEMPLATE = <<~EOS
+    ---
+    layout: formula_json
+    ---
+    {{ content }}
+  EOS
+
+  def html_template(title)
+    <<~EOS
+      ---
+      title: #{title}
+      layout: formula
+      redirect_from: /formula-linux/$TITLE
+      ---
+      {{ content }}
+    EOS
+  end
+
+  def generate_formula_api
+    generate_formula_api_args.parse
+
+    tap = Tap.fetch("homebrew/core")
+
+    directories = ["_data/formula", "api/formula", "formula"]
+    FileUtils.rm_rf directories + ["_data/formula_canonical.json"]
+    FileUtils.mkdir_p directories
+
+    Formulary.enable_factory_cache!
+
+    tap.formula_names.each do |name|
+      formula = Formulary.factory(name)
+      name = formula.name
+      json = JSON.pretty_generate(formula.to_hash_with_variations)
+
+      File.write("_data/formula/#{name.tr("+", "_")}.json", "#{json}\n")
+      File.write("api/formula/#{name}.json", JSON_TEMPLATE)
+      File.write("formula/#{name}.html", html_template(name))
+    end
+
+    canonical_json = JSON.pretty_generate(tap.formula_renames.merge(tap.alias_table))
+    File.write("_data/formula_canonical.json", "#{canonical_json}\n")
+  end
+end

Library/Homebrew/test/dev-cmd/generate-cask-api_spec.rb

@@ -0,0 +1,8 @@
+# typed: false
+# frozen_string_literal: true
+
+require "cmd/shared_examples/args_parse"
+
+describe "brew generate-cask-api" do
+  it_behaves_like "parseable arguments"
+end

Library/Homebrew/test/dev-cmd/generate-formula-api_spec.rb

@@ -0,0 +1,8 @@
+# typed: false
+# frozen_string_literal: true
+
+require "cmd/shared_examples/args_parse"
+
+describe "brew generate-formula-api" do
+  it_behaves_like "parseable arguments"
+end