Class: Propshaft::Compressor::Writer

Inherits:
Object
  • Object
show all
Defined in:
lib/propshaft/compressor/writer.rb

Direct Known Subclasses

BrotliWriter, GzipWriter, ZstdWriter

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(from:, to:, level: 8) ⇒ Writer

Returns a new instance of Writer.



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# File 'lib/propshaft/compressor/writer.rb', line 21

def initialize(from:, to:, level: 8)
  @from  = from
  @to    = to
  @level = level
end

Class Method Details

.compress ⇒ Object 



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# File 'lib/propshaft/compressor/writer.rb', line 17

def self.compress(...)
  new(...).compress
end

Instance Method Details

#build_writer(io) ⇒ Object 



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# File 'lib/propshaft/compressor/writer.rb', line 41

def build_writer(io)
  raise 'abstract'
end

#compress ⇒ Object 



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# File 'lib/propshaft/compressor/writer.rb', line 27

def compress
  File.open(@from, 'rb') do |from_io|
    File.open(@to, 'wb+') do |to_io|
      writer = build_writer to_io, from_io.mtime
      from_io.each do |blk|
        writer.write blk
      end
    ensure
      writer&.close
    end
    File.utime from_io.atime, from_io.mtime, @to
  end
end