Class: MOFile

Inherits:
Hash show all
Defined in:
lib/ramaze/contrib/gettext/mo.rb

Defined Under Namespace

Classes: Header, InvalidFormat

Constant Summary collapse

MAGIC_BIG_ENDIAN = 
"\x95\x04\x12\xde"
MAGIC_LITTLE_ENDIAN = 
"\xde\x12\x04\x95"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(output_charset = nil) ⇒ MOFile

Returns a new instance of MOFile.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 41

def initialize(output_charset = nil)
  @filename = nil
  @last_modified = nil
  @little_endian = true
  @output_charset = output_charset
  super
end

Instance Attribute Details

#charset ⇒ Object (readonly)

Returns the value of attribute charset.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 154

def charset
  @charset
end

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 23

def filename
  @filename
end

#last_modified ⇒ Object

Returns the value of attribute last_modified.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 153

def last_modified
  @last_modified
end

#little_endian ⇒ Object

Returns the value of attribute little_endian.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 153

def little_endian
  @little_endian
end

#nplurals ⇒ Object (readonly)

Returns the value of attribute nplurals.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 154

def nplurals
  @nplurals
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 153

def path
  @path
end

#plural ⇒ Object (readonly)

Returns the value of attribute plural.



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 154

def plural
  @plural
end

Class Method Details

.open(arg = nil, output_charset = nil) ⇒ Object 



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 36

def self.open(arg = nil, output_charset = nil)
  result = self.new(output_charset)
  result.load(arg)
end

Instance Method Details

#load(arg) ⇒ Object 



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 60

def load(arg)
  case arg
  when String
    begin
     st = File.stat(arg)
     @last_modified = [st.ctime, st.mtime]
    rescue Exception
    end
    load_from_file(arg)
  when IO
    load_from_stream(arg)
  end
  @filename = arg
  self
end

#load_from_file(filename) ⇒ Object 



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 143

def load_from_file(filename)
  @filename = filename
  File.open(filename, 'rb'){|f| load_from_stream(f)}
end

#load_from_stream(io) ⇒ Object

Raises:



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 76

def load_from_stream(io)
  magic = io.read(4)
  case magic
  when MAGIC_BIG_ENDIAN
    @little_endian = false
  when MAGIC_LITTLE_ENDIAN
    @little_endian = true
  else
    raise InvalidFormat.new("Unknown signature %s" % magic.dump)
  end

  header = Header.new(magic, *(io.read(4 * 6).unpack(@little_endian ? 'V6' : 'N6')))
  raise InvalidFormat.new(sprintf("file format revision %d isn't supported", header.revision)) if header.revision > 0

  io.pos = header.orig_table_offset
  orig_table_data = io.read((4 * 2) * header.nstrings).unpack(@little_endian ? 'V*' : 'N*')

  io.pos = header.translated_table_offset
  trans_table_data = io.read((4 * 2) * header.nstrings).unpack(@little_endian ? 'V*' : 'N*')

  original_strings = Array.new(header.nstrings)
  for i in 0...header.nstrings
    io.pos = orig_table_data[i * 2 + 1]
    original_strings[i] = io.read(orig_table_data[i * 2 + 0])
  end

  clear
  for i in 0...header.nstrings
    io.pos = trans_table_data[i * 2 + 1]
    str = io.read(trans_table_data[i * 2 + 0])

    if original_strings[i] == ""
      if str
        @charset = nil
        @nplurals = nil
        @plural = nil
        str.each_line{|line|
          if /^Content-Type:/i =~ line and /charset=((?:\w|-)+)/i =~ line
            @charset = $1
          elsif /^Plural-Forms:\s*nplurals\s*\=\s*(\d*);\s*plural\s*\=\s*([^;]*)\n?/ =~ line
            @nplurals = $1
            @plural = $2
          end
          break if @charset and @nplurals
        }
        @nplurals = "1" unless @nplurals
        @plural = "0" unless @plural
      end
    else
      if @output_charset
        begin
          str = Iconv.iconv(@output_charset, @charset, str).join if @charset
        rescue Iconv::Failure
          if $DEBUG
            $stderr.print "@charset = ", @charset, "\n"
            $stderr.print "@output_charset = ", @output_charset, "\n"
            $stderr.print "msgid = ", original_strings[i], "\n"
            $stderr.print "msgstr = ", str, "\n"
          end
        end
      end
    end
    self[original_strings[i]] = str
  end
  self
end

#set_comment(msgid_or_sym, comment) ⇒ Object 



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 148

def set_comment(msgid_or_sym, comment)
  #Do nothing
end

#update! ⇒ Object 



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# File 'lib/ramaze/contrib/gettext/mo.rb', line 49

def update!
  if FileTest.exist?(@filename)
    st = File.stat(@filename)
    load(@filename) unless (@last_modified == [st.ctime, st.mtime])
  else
    puts "#{@filename} was lost." if $DEBUG
    clear
  end
  self
end