Import sample code from ruby/ruby

sample/net-imap.rb

@@ -0,0 +1,167 @@
+require 'net/imap'
+require "getoptlong"
+
+$stdout.sync = true
+$port = nil
+$user = ENV["USER"] || ENV["LOGNAME"]
+$auth = "login"
+$ssl = false
+$starttls = false
+
+def usage
+  <<EOF
+usage: #{$0} [options] <host>
+
+  --help                        print this message
+  --port=PORT                   specifies port
+  --user=USER                   specifies user
+  --auth=AUTH                   specifies auth type
+  --starttls                    use starttls
+  --ssl                         use ssl
+EOF
+end
+
+begin
+  require 'io/console'
+rescue LoadError
+  def _noecho(&block)
+    system("stty", "-echo")
+    begin
+      yield STDIN
+    ensure
+      system("stty", "echo")
+    end
+  end
+else
+  def _noecho(&block)
+    STDIN.noecho(&block)
+  end
+end
+
+def get_password
+  print "password: "
+  begin
+    return _noecho(&:gets).chomp
+  ensure
+    puts
+  end
+end
+
+def get_command
+  printf("%s@%s> ", $user, $host)
+  if line = gets
+    return line.strip.split(/\s+/)
+  else
+    return nil
+  end
+end
+
+parser = GetoptLong.new
+parser.set_options(['--debug', GetoptLong::NO_ARGUMENT],
+  ['--help', GetoptLong::NO_ARGUMENT],
+  ['--port', GetoptLong::REQUIRED_ARGUMENT],
+  ['--user', GetoptLong::REQUIRED_ARGUMENT],
+  ['--auth', GetoptLong::REQUIRED_ARGUMENT],
+  ['--starttls', GetoptLong::NO_ARGUMENT],
+  ['--ssl', GetoptLong::NO_ARGUMENT])
+begin
+  parser.each_option do |name, arg|
+    case name
+    when "--port"
+      $port = arg
+    when "--user"
+      $user = arg
+    when "--auth"
+      $auth = arg
+    when "--ssl"
+      $ssl = true
+    when "--starttls"
+      $starttls = true
+    when "--debug"
+      Net::IMAP.debug = true
+    when "--help"
+      usage
+      exit
+    end
+  end
+rescue
+  abort usage
+end
+
+$host = ARGV.shift
+unless $host
+  abort usage
+end
+
+imap = Net::IMAP.new($host, :port => $port, :ssl => $ssl)
+begin
+  imap.starttls if $starttls
+  class << password = method(:get_password)
+    alias to_str call
+  end
+  imap.authenticate($auth, $user, password)
+  while true
+    cmd, *args = get_command
+    break unless cmd
+    begin
+      case cmd
+      when "list"
+        for mbox in imap.list("", args[0] || "*")
+          if mbox.attr.include?(Net::IMAP::NOSELECT)
+            prefix = "!"
+          elsif mbox.attr.include?(Net::IMAP::MARKED)
+            prefix = "*"
+          else
+            prefix = " "
+          end
+          print prefix, mbox.name, "\n"
+        end
+      when "select"
+        imap.select(args[0] || "inbox")
+        print "ok\n"
+      when "close"
+        imap.close
+        print "ok\n"
+      when "summary"
+        unless messages = imap.responses["EXISTS"][-1]
+          puts "not selected"
+          next
+        end
+        if messages > 0
+          for data in imap.fetch(1..-1, ["ENVELOPE"])
+            print data.seqno, ": ", data.attr["ENVELOPE"].subject, "\n"
+          end
+        else
+          puts "no message"
+        end
+      when "fetch"
+        if args[0]
+          data = imap.fetch(args[0].to_i, ["RFC822.HEADER", "RFC822.TEXT"])[0]
+          puts data.attr["RFC822.HEADER"]
+          puts data.attr["RFC822.TEXT"]
+        else
+          puts "missing argument"
+        end
+      when "logout", "exit", "quit"
+        break
+      when "help", "?"
+        print <<EOF
+list [pattern]                  list mailboxes
+select [mailbox]                select mailbox
+close                           close mailbox
+summary                         display summary
+fetch [msgno]                   display message
+logout                          logout
+help, ?                         display help message
+EOF
+      else
+        print "unknown command: ", cmd, "\n"
+      end
+    rescue Net::IMAP::Error
+      puts $!
+    end
+  end
+ensure
+  imap.logout
+  imap.disconnect
+end