Data commit

Task/Send-email/Ruby/send-email.rb

@@ -0,0 +1,77 @@
+require 'base64'
+require 'net/smtp'
+require 'tmail'
+require 'mime/types'
+
+class Email
+  def initialize(from, to, subject, body, options={})
+    @opts = {:attachments => [], :server => 'localhost'}.update(options)
+    @msg = TMail::Mail.new
+    @msg.from    = from
+    @msg.to      = to
+    @msg.subject = subject
+    @msg.cc      = @opts[:cc]  if @opts[:cc]
+    @msg.bcc     = @opts[:bcc] if @opts[:bcc]
+
+    if @opts[:attachments].empty?
+      # just specify the body
+      @msg.body = body
+    else
+      # attach attachments, including the body
+      @msg.body = "This is a multi-part message in MIME format.\n"
+
+      msg_body = TMail::Mail.new
+      msg_body.body = body
+      msg_body.set_content_type("text","plain", {:charset => "ISO-8859-1"})
+      @msg.parts << msg_body
+
+      octet_stream = MIME::Types['application/octet-stream'].first
+
+      @opts[:attachments].select {|file| File.readable?(file)}.each do |file|
+        mime_type = MIME::Types.type_for(file).first || octet_stream
+        @msg.parts << create_attachment(file, mime_type)
+      end
+    end
+  end
+  attr_reader :msg
+
+  def create_attachment(file, mime_type)
+    attach = TMail::Mail.new
+    if mime_type.binary?
+      attach.body = Base64.encode64(File.read(file))
+      attach.transfer_encoding = 'base64'
+    else
+      attach.body = File.read(file)
+    end
+    attach.set_disposition("attachment", {:filename => file})
+    attach.set_content_type(mime_type.media_type, mime_type.sub_type, {:name=>file})
+    attach
+  end
+
+  # instance method to send an Email object
+  def send
+    args = @opts.values_at(:server, :port, :helo, :username, :password, :authtype)
+    Net::SMTP.start(*args) do |smtp|
+      smtp.send_message(@msg.to_s, @msg.from[0], @msg.to)
+    end
+  end
+
+  # class method to construct an Email object and send it
+  def self.send(*args)
+    self.new(*args).send
+  end
+end
+
+Email.send(
+  'sender@sender.invalid',
+  %w{ recip1@recipient.invalid recip2@example.com },
+  'the subject',
+  "the body\nhas lines",
+  {
+    :attachments => %w{ file1 file2 file3 },
+    :server => 'mail.example.com',
+    :helo => 'sender.invalid',
+    :username => 'user',
+    :password => 'secret'
+  }
+)