Class: RipperTags::EmacsAppendFormatter

Inherits:
Object
  • Object
show all
Defined in:
lib/ripper-tags/emacs_append_formatter.rb

Instance Method Summary collapse

Constructor Details

#initialize(fmt) ⇒ EmacsAppendFormatter

Wraps an EmacsFormatter



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# File 'lib/ripper-tags/emacs_append_formatter.rb', line 6

def initialize(fmt)
  raise 'append is only possible to a file' if fmt.stdout?
  @formatter = fmt
end

Instance Method Details

#parse_tag_file ⇒ Object 



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# File 'lib/ripper-tags/emacs_append_formatter.rb', line 31

def parse_tag_file
  section_map = {}
  File.open(@formatter.options.tag_file_name) do |old_file|
    while line = old_file.read(2)
      raise 'expected "\f\n", got %p' % line unless "\x0C\n" == line
      filename, length = old_file.gets.chomp.split(',')
      section_map[filename] = old_file.read(length.to_i)
    end
  end
  section_map
rescue Errno::ENOENT
  {}
end

#with_output ⇒ Object 



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# File 'lib/ripper-tags/emacs_append_formatter.rb', line 11

def with_output
  old_sections = parse_tag_file
  @seen_filenames = Set.new

  @formatter.with_output do |out|
    yield out
    @formatter.flush_file_section(out)

    old_sections.each do |filename, data|
      next if @seen_filenames.include?(filename)
      @formatter.write_section(filename, data, out)
    end
  end
end

#write(tag, out) ⇒ Object 



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# File 'lib/ripper-tags/emacs_append_formatter.rb', line 26

def write(tag, out)
  @formatter.write(tag, out)
  @seen_filenames << @formatter.relative_path(tag)
end