Module: Maildir::Keywords

Defined in:
lib/maildir/keywords.rb

Defined Under Namespace

Modules: MessageExtension

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



6
7
8
 
# File 'lib/maildir/keywords.rb', line 6

def self.included(base)
  Maildir::Message.send(:include, MessageExtension)
end

Instance Method Details

#keyword_dir ⇒ Object 



10
11
12
13
14
 
# File 'lib/maildir/keywords.rb', line 10

def keyword_dir
  @keyword_dir ||= File.join(path, 'courierimapkeywords')
  Dir.mkdir(@keyword_dir) unless File.directory?(@keyword_dir)
  return @keyword_dir
end

#keywords(key) ⇒ Object 



85
86
87
88
 
# File 'lib/maildir/keywords.rb', line 85

def keywords(key)
  read_keywords unless @keywords
  @keywords[key] || []
end

#read_keywords ⇒ Object

process contents of courierimapkeywords/ directory as described in README.imapkeywords



17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
 
# File 'lib/maildir/keywords.rb', line 17

def read_keywords
  messages = (list(:cur) + list(:new)).inject({}) { |m, msg| m[msg.unique_name] = msg ; m }
  t = Time.now.to_i / 300
  keywords = []
  state = :head
  # process :list
  list_file = File.join(keyword_dir, ':list')
  File.open(list_file).each_line do |line|
    line.strip!
    if state == :head
      if line.empty?
        state = :messages
        next
      end
      keywords << line
    else
      key, ids = line.split(':')
      if msg = messages[key]
        msg.set_keywords(ids.split(/\s/).map {|id| keywords[id.to_i - 1] })
      end
    end
  end if File.exist?(list_file)
  # collect keyword files
  keyword_files = (Dir.entries(keyword_dir) - %w(. .. :list)).inject({}) do |keyword_files, file|
    if file =~ /^\.(\d+)\.(.*)$/
      n = $1
      key = $2
    else
      n = t + 1
      key = file
      FileUtils.mv(File.join(keyword_dir, file), File.join(keyword_dir, ".#{n}.#{key}"))
    end
    if msg = messages[key]
      (keyword_files[key] ||= []) << [n, key]
    else # message doesn't exist
      fname = File.join(keyword_dir, file)
      if File.stat(fname).ctime < (Time.now - (15 * 60))
        FileUtils.rm(fname)
      end
    end
    next(keyword_files)
  end
  # process keyword files
  keyword_files.each_pair do |key, files|
    files.sort! { |a, b| a[0] <=> b[0] }
    files[0..-2].each { |f| FileUtils.rm(File.join(keyword_dir, ".#{f.join('.')}")) } if files.last[0] < t
    msg = messages[key]
    file = (File.exist?(File.join(keyword_dir, files.last[1])) ? files.last[1] : ".#{files.last.join('.')}")
    current_keywords = File.read(File.join(keyword_dir, file)).split(/\s+/)
    msg.set_keywords(current_keywords)
    if (add = (current_keywords - keywords)).any?
      keywords += add
    end
  end
  # rebuild :list
  @keywords = {}
  tmp_file = File.join(path, 'tmp', ':list')
  File.open(tmp_file, 'w') { |f|
    f.write(keywords.join("\n")+"\n\n")
    messages.each_pair do |key, msg|
      next unless msg.keywords
      f.puts([key, msg.keywords.map{|kw| keywords.index(kw) + 1 }.sort.join(' ')].join(':'))
      @keywords[key] = msg.keywords
    end
  }
  FileUtils.mv(tmp_file, list_file)
end