1 files changed, 135 insertions, 0 deletions
diff --git a/private/hhvm.rb b/private/hhvm.rb
new file mode 100644
index 0000000..85e78b7
--- /dev/null
+++ b/private/hhvm.rb
@@ -0,0 +1,135 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+# frozen_string_literal: true
+
+require 'pathname'
+require 'digest/md5'
+require 'net/http'
+require_relative 'config/config'
+require_relative 'lib/package'
+
+class Package
+  attr_reader :path, :version, :homepage, :requires
+
+  def initialize(path, version:, homepage:, requires: [])
+    @path = path
+    @version = version
+    @homepage = homepage
+    @requires = requires
+  end
+
+  def name
+    File.basename @path
+  end
+
+  def name_version
+    "#{name}-#{@version}"
+  end
+end
+
+module SlackBuilder
+  extend Rake::FileUtilsExt
+
+  def self.clone(repo, tarball, tag_prefix = 'v')
+    `./bin/slackbuilder clone #{repo} #{tarball} #{tag_prefix}`
+  end
+end
+
+namespace :hhvm do
+  def filter_set_hhvm_third_party_source_args(tokens)
+    args = tokens[0]
+    allowed_arguments = tokens[1..].each_slice(2)
+      .filter do |key, _value|
+        !key.end_with?('_URL') && !key.end_with?('_HASH')
+      end
+
+    allowed_arguments
+      .flatten
+      .prepend("  #{args}")
+      .join("\n  ")
+  end
+
+  def split_set_hhvm_third_party_source_args(section_content)
+    section_content
+      .split("\n")
+      .map do |line|
+        hash_index = line.index '#'
+        line = line[...hash_index] unless hash_index.nil?
+
+        line.strip
+      end
+  end
+
+  def rewrite_set_hhvm_third_party_source_args(contents)
+    set_hhvm_start = contents.index 'SET_HHVM_THIRD_PARTY_SOURCE_ARGS('
+    return nil if set_hhvm_start.nil?
+
+    section_contents = contents[set_hhvm_start + 'SET_HHVM_THIRD_PARTY_SOURCE_ARGS('.length..]
+    set_hhvm_end = section_contents.index ')'
+
+    lines = split_set_hhvm_third_party_source_args section_contents[...set_hhvm_end]
+    new_cmake_section = filter_set_hhvm_third_party_source_args lines.reject(&:blank?).join(' ').split
+
+    contents[...set_hhvm_start] +
+      "SET_HHVM_THIRD_PARTY_SOURCE_ARGS(\n#{new_cmake_section}\n)\n" +
+      section_contents[set_hhvm_end..]
+  end
+
+  desc 'Generates diffs with removed download URLs'
+  task :bundled_dependencies, [:version] do |_, arguments|
+    run_on_source arguments[:version] do |third_party|
+      c_make_lists = third_party + 'CMakeLists.txt'
+      next unless c_make_lists.exist?
+
+      contents = c_make_lists.read
+      rewritten_cmake = rewrite_set_hhvm_third_party_source_args contents
+      next if rewritten_cmake.nil?
+
+      puts Open3.capture2('diff', '-Nur', c_make_lists.to_path, '-', stdin_data: rewritten_cmake).first
+    end
+  end
+
+  desc 'Generated SlackBuild code to prepare bundled dependencies'
+  task :bundled_code, [:version] do |_, arguments|
+    run_on_source arguments[:version] do |third_party|
+      c_make_lists = third_party + 'CMakeLists.txt'
+      next unless c_make_lists.exist?
+
+      contents = c_make_lists.read
+      set_hhvm_start = contents.index 'SET_HHVM_THIRD_PARTY_SOURCE_ARGS('
+      next if set_hhvm_start.nil?
+
+      set_hhvm_end = contents.index ')', set_hhvm_start
+      set_hhvm_start += 'SET_HHVM_THIRD_PARTY_SOURCE_ARGS('.length
+      set_hhvm_end -= 1
+      contents = contents[set_hhvm_start..set_hhvm_end].split[1..].map(&:strip)
+
+      src = Pathname.new('third-party') +
+        third_party.basename +
+        "bundled_#{third_party.basename}-prefix" + 'src'
+      bundled = src + "bundled_#{third_party.basename}"
+      archive_name = contents[1][contents[1].rindex('/') + 1..-2]
+
+      puts "mkdir -p #{bundled}"
+      puts "install -m 0644 -D $CWD/#{archive_name} #{src + archive_name}"
+      puts "tar -zxvf $CWD/#{archive_name} -C #{bundled}"
+      puts
+    end
+  end
+end
+
+private
+
+def run_on_source(version, &block)
+  package = Package.new 'development/hhvm',
+    version: version,
+    homepage: 'https://hhvm.com/',
+    requires: %w[tbb glog libdwarf libmemcached dobule-conversion]
+  repository = SlackBuilder.clone 'https://github.com/facebook/hhvm.git', package, 'HHVM-'
+
+  (repository + 'third-party').each_child do |third_party|
+    block.call third_party
+  end
+end