Class: Glark::ArchiveFile

Inherits:
Object
  • Object
show all
Defined in:
lib/glark/io/file/archive_file.rb

Direct Known Subclasses

TarFile, ZipFile

Instance Method Summary collapse

Constructor Details

#initialize(fname, range) ⇒ ArchiveFile

Returns a new instance of ArchiveFile.



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# File 'lib/glark/io/file/archive_file.rb', line 8

def initialize fname, range
  @fname = fname
  @range = range
end

Instance Method Details

#each(&blk) ⇒ Object 



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# File 'lib/glark/io/file/archive_file.rb', line 30

def each &blk
  reader = get_reader
  reader.each do |entry|
    blk.call entry
  end
  reader.close
end

#list ⇒ Object 



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# File 'lib/glark/io/file/archive_file.rb', line 22

def list
  contents = Array.new
  each do |entry|
    contents << entry_name(entry)
  end
  contents
end

#read(entry) ⇒ Object 



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# File 'lib/glark/io/file/archive_file.rb', line 48

def read entry
  entry.read
end

#search(expr, output_type_cls, output_opts) ⇒ Object 



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# File 'lib/glark/io/file/archive_file.rb', line 52

def search expr, output_type_cls, output_opts
  matched = nil
  each do |entry|
    # a glitch with zlib doesn't seem to recognize some tarball entries
    # (with entry.header.typeflag == "") as being a file, so we test for
    # directory:
    next if entry.directory?
    matched = search_archive_file(expr, entry, output_type_cls, output_opts) || matched
  end
  matched
end

#search_archive_file(expr, entry, output_type_cls, output_opts) ⇒ Object 



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# File 'lib/glark/io/file/archive_file.rb', line 38

def search_archive_file expr, entry, output_type_cls, output_opts
  name = entry_name entry
  data = read entry
  contents = StringIO.new data
  
  file = Glark::File.new name + " (in #{@fname})", contents, @range
  output = output_type_cls.new file, output_opts
  file.search expr, output
end

#search_list(expr, output_cls, output_opts) ⇒ Object 



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# File 'lib/glark/io/file/archive_file.rb', line 13

def search_list expr, output_cls, output_opts
  contents = StringIO.new list.collect { |x| x + "\n" }.join('')
  contents.rewind

  file = Glark::File.new @fname, contents, @range
  output_type = output_cls.new file, output_opts
  file.search expr, output_type
end