Class: Sisimai::Mail::Maildir

Inherits:
Object
  • Object
show all
Defined in:
lib/sisimai/mail/maildir.rb

Overview

Sisimai::Mail::Maildir is a reader for getting contents of each email in the Maildir/ directory.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(argv1) ⇒ Sisimai::Mail::Maildir

Constructor of Sisimai::Mail::Maildir

Parameters:

  • argvs (String) —

    Path to Maildir/

Raises:

  • (Errno::ENOENT) 


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# File 'lib/sisimai/mail/maildir.rb', line 18

def initialize(argv1)
  raise Errno::ENOENT  if File.exist?(argv1) == false
  raise Errno::ENOTDIR if File.ftype(argv1)  != 'directory'

  @path   = nil
  @size   = Dir.entries(argv1).size
  @dir    = argv1
  @file   = nil
  @offset = 0
  @handle = Dir.open(argv1)
end

Instance Attribute Details

#dir ⇒ Object (readonly)

:dir [String] Path to Maildir/ :size [Integer] The number of files/directories in the Maildir/ :path [String] Path to each file :file, [String] Each file name of a mail in the Maildir/ :offset [Integer] The number of email files in the Maildir/ :handle [IO::Dir] Directory handle



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# File 'lib/sisimai/mail/maildir.rb', line 11

def dir
  @dir
end

#file ⇒ Object

Returns the value of attribute file.



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# File 'lib/sisimai/mail/maildir.rb', line 12

def file
  @file
end

#handle ⇒ Object

Returns the value of attribute handle.



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# File 'lib/sisimai/mail/maildir.rb', line 12

def handle
  @handle
end

#offset ⇒ Object

Returns the value of attribute offset.



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# File 'lib/sisimai/mail/maildir.rb', line 12

def offset
  @offset
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/sisimai/mail/maildir.rb', line 12

def path
  @path
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/sisimai/mail/maildir.rb', line 12

def size
  @size
end

Instance Method Details

#read ⇒ String

Maildir reader, works as an iterator.

Returns:

  • (String) —

    Contents of file in Maildir/



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# File 'lib/sisimai/mail/maildir.rb', line 32

def read
  return nil if self.offset >= self.size
  seekhandle = self.handle
  readbuffer = ''

  begin
    while r = seekhandle.read do
      # Read each file in the directory
      if r == '.' || r == '..'
        # Is a directory
        self.offset += 1
        next
      end

      emailindir = (self.dir + '/' + r).squeeze('/')
      if File.ftype(emailindir) != 'file' ||
         File.size(emailindir) == 0 ||
         File.readable?(emailindir) == false
        # The file is not a file, is empty, is not readable
        self.offset += 1
        next
      end

      File.open(emailindir, 'r:UTF-8') do |f|
        readbuffer = f.read
      end

      self.offset += 1
      self.path    = emailindir
      self.file    = r
      break
    end
    seekhandle.close if self.offset >= self.size
  end

  return readbuffer
end