From fcbf63e62c627deae76c1b8cb8c0876c536ed811 Mon Sep 17 00:00:00 2001
From: Jari Vetoniemi <jari.vetoniemi@indooratlas.com>
Date: Mon, 16 Mar 2020 18:49:26 +0900
Subject: Fresh start

---
 jni/ruby/tool/downloader.rb | 178 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 jni/ruby/tool/downloader.rb

(limited to 'jni/ruby/tool/downloader.rb')

diff --git a/jni/ruby/tool/downloader.rb b/jni/ruby/tool/downloader.rb
new file mode 100644
index 0000000..8f169d5
--- /dev/null
+++ b/jni/ruby/tool/downloader.rb
@@ -0,0 +1,178 @@
+require 'open-uri'
+begin
+  require 'net/https'
+  $rubygems_schema = 'https'
+
+  # open-uri of ruby 2.2.0 accept an array of PEMs as ssl_ca_cert, but old
+  # versions are not.  so, patching OpenSSL::X509::Store#add_file instead.
+  class OpenSSL::X509::Store
+    alias orig_add_file add_file
+    def add_file(pems)
+      Array(pems).each do |pem|
+        if File.directory?(pem)
+          add_path pem
+        else
+          orig_add_file pem
+        end
+      end
+    end
+  end
+  # since open-uri internally checks ssl_ca_cert by File.directory?, to allow
+  # accept an array.
+  class <<File
+    alias orig_directory? directory?
+    def File.directory? files
+      files.is_a?(Array) ? false : orig_directory?(files)
+    end
+  end
+rescue LoadError
+  $rubygems_schema = 'http'
+end
+
+class Downloader
+  class GNU < self
+    def self.download(name, *rest)
+      super("http://gcc.gnu.org/git/?p=gcc.git;a=blob_plain;f=#{name};hb=master", name, *rest)
+    end
+  end
+
+  class RubyGems < self
+    def self.download(name, dir = nil, ims = true, options = {})
+      options[:ssl_ca_cert] = Dir.glob(File.expand_path("../lib/rubygems/ssl_certs/*.pem", File.dirname(__FILE__)))
+      if $rubygems_schema != 'https'
+        warn "*** using http instead of https ***"
+      end
+      super("#{$rubygems_schema}://rubygems.org/downloads/#{name}", name, dir, ims, options)
+    end
+  end
+
+  Gems = RubyGems
+
+  class Unicode < self
+    def self.download(name, *rest)
+      super("http://www.unicode.org/Public/#{name}", name, *rest)
+    end
+  end
+
+  def self.mode_for(data)
+    /\A#!/ =~ data ? 0755 : 0644
+  end
+
+  def self.http_options(file, since)
+    options = {}
+    if since
+      case since
+      when true
+        since = (File.mtime(file).httpdate rescue nil)
+      when Time
+        since = since.httpdate
+      end
+      if since
+        options['If-Modified-Since'] = since
+      end
+    end
+    options
+  end
+
+  # Downloader.download(url, name, [dir, [ims]])
+  #
+  # Update a file from url if newer version is available.
+  # Creates the file if the file doesn't yet exist; however, the
+  # directory where the file is being created has to exist already.
+  # If +ims+ is false, always download url regardless of its last
+  # modified time.
+  #
+  # Example usage:
+  #   download 'http://www.unicode.org/Public/UCD/latest/ucd/UnicodeData.txt',
+  #            'UnicodeData.txt', 'enc/unicode/data'
+  def self.download(url, name, dir = nil, ims = true, options = {})
+    file = dir ? File.join(dir, File.basename(name)) : name
+    if ims.nil? and File.exist?(file)
+      if $VERBOSE
+        $stdout.puts "#{name} already exists"
+        $stdout.flush
+      end
+      return true
+    end
+    url = URI(url)
+    if $VERBOSE
+      $stdout.print "downloading #{name} ... "
+      $stdout.flush
+    end
+    begin
+      data = url.read(options.merge(http_options(file, ims.nil? ? true : ims)))
+    rescue OpenURI::HTTPError => http_error
+      if http_error.message =~ /^304 / # 304 Not Modified
+        if $VERBOSE
+          $stdout.puts "not modified"
+          $stdout.flush
+        end
+        return true
+      end
+      raise
+    rescue Timeout::Error
+      if ims.nil? and File.exist?(file)
+        puts "Request for #{url} timed out, using old version."
+        return true
+      end
+      raise
+    rescue SocketError
+      if ims.nil? and File.exist?(file)
+        puts "No network connection, unable to download #{url}, using old version."
+        return true
+      end
+      raise
+    end
+    mtime = nil
+    open(file, "wb", 0600) do |f|
+      f.write(data)
+      f.chmod(mode_for(data))
+      mtime = data.meta["last-modified"]
+    end
+    if mtime
+      mtime = Time.httpdate(mtime)
+      File.utime(mtime, mtime, file)
+    end
+    if $VERBOSE
+      $stdout.puts "done"
+      $stdout.flush
+    end
+    true
+  rescue => e
+    raise "failed to download #{name}\n#{e.message}: #{url}"
+  end
+end
+
+if $0 == __FILE__
+  ims = true
+  until ARGV.empty?
+    case ARGV[0]
+    when '-d'
+      destdir = ARGV[1]
+      ARGV.shift
+    when '-e'
+      ims = nil
+    when '-a'
+      ims = true
+    when /\A-/
+      abort "#{$0}: unknown option #{ARGV[0]}"
+    else
+      break
+    end
+    ARGV.shift
+  end
+  dl = Downloader.constants.find do |name|
+    ARGV[0].casecmp(name.to_s) == 0
+  end unless ARGV.empty?
+  $VERBOSE = true
+  if dl
+    dl = Downloader.const_get(dl)
+    ARGV.shift
+    ARGV.each do |name|
+      dl.download(name, destdir, ims)
+    end
+  else
+    abort "usage: #{$0} url name" unless ARGV.size == 2
+    Downloader.download(ARGV[0], ARGV[1], destdir, ims)
+  end
+end
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