Class: NBTUtils::File

Inherits:
Object
  • Object
show all
Defined in:
lib/nbt_utils/file.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path = nil) ⇒ File

Returns a new instance of File.



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# File 'lib/nbt_utils/file.rb', line 7

def initialize(path = nil)
  @path = path
end

Instance Attribute Details

#compressed ⇒ Object (readonly)

Returns the value of attribute compressed.



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# File 'lib/nbt_utils/file.rb', line 5

def compressed
  @compressed
end

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/nbt_utils/file.rb', line 5

def content
  @content
end

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/nbt_utils/file.rb', line 5

def path
  @path
end

#tag ⇒ Object (readonly)

Returns the value of attribute tag.



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# File 'lib/nbt_utils/file.rb', line 5

def tag
  @tag
end

Instance Method Details

#read(read_path = path) ⇒ Object 



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# File 'lib/nbt_utils/file.rb', line 11

def read(read_path = path)
  # Zlib does not provide a way to test a file for compressed, and I'm
  # not going to tool around with magic numbers, so I guess we use
  # exceptions for flow control.
  begin
    Zlib::GzipReader.open(read_path) do |f|
      @content = StringIO.new(f.read)
    end
    @compressed = true
  rescue Zlib::GzipFile::Error
    @content = StringIO.new(::File.read(read_path))
    @compressed = false
  end

  last_byte = content.read(1).bytes.first
  klass = NBTUtils::Tag.tag_type_to_class(last_byte)

  @tag = klass.new(content, named: true)
end

#write(write_path = path, write_tag = tag, write_compressed = compressed) ⇒ Object 



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# File 'lib/nbt_utils/file.rb', line 31

def write(write_path = path, write_tag = tag, write_compressed = compressed)
  if write_compressed
    Zlib::GzipWriter.open(write_path) do |gz|
      gz.write write_tag.to_nbt_string
    end
  else
    ::File.write(write_path, write_tag.to_nbt_string)
  end
end