WIP

lib/metacrunch/file.rb

@@ -2,6 +2,7 @@
 
 class Metacrunch::File
   require_relative "./file/reader"
+  require_relative "./file/writer"
 
   attr_accessor :content
   attr_accessor :entry_name # equals file_name for plain files

lib/metacrunch/file/writer.rb

@@ -0,0 +1,26 @@
+require_relative "../file"
+require_relative "../processor"
+
+class Metacrunch::File::Writer < Metacrunch::Processor
+  require_relative "./writer/plain_file_writer"
+  require_relative "./writer/tar_file_writer"
+  require_relative "./writer/zip_file_writer"
+
+  def initialize(filename)
+    @writer =
+    [TarFileWriter, ZipFileWriter, PlainFileWriter].find do |_writer|
+      _writer.supports?(filename)
+    end
+    .try do |_appropriate_writer_class|
+      _appropriate_writer_class.new(filename)
+    end
+  end
+
+  def close
+    @writer.close
+  end
+
+  def write(*args)
+    @writer.write(*args)
+  end
+end

lib/metacrunch/file/writer/plain_file_writer.rb

@@ -0,0 +1,19 @@
+require_relative "../writer"
+
+class Metacrunch::File::Writer::PlainFileWriter
+  def self.supports?(filename)
+    true
+  end
+
+  def initialize(filename)
+    @io = File.open(filename, "w")
+  end
+
+  def close
+    @io.close
+  end
+
+  def write(options = {})
+    @io.write(options[:content])
+  end
+end

lib/metacrunch/file/writer/tar_file_writer.rb

@@ -0,0 +1,26 @@
+require "rubygems/package"
+require "zlib"
+require_relative "../writer"
+
+class Metacrunch::File::Writer::TarFileWriter
+  def self.supports?(filename)
+    !!filename[/\.tar\Z|\.tar\.gz\Z|\.tgz\Z/]
+  end
+
+  def initialize(filename)
+    @io = File.open(filename, "w")
+    @io = Zlib::GzipWriter.new(@io) if filename.end_with?("gz")
+    @tar_writer = Gem::Package::TarWriter.new(@io)
+  end
+
+  def close
+    @tar_writer.close
+    @io.close
+  end
+
+  def write(options = {})
+    @tar_writer.add_file_simple(options[:entry_name], 0644, options[:content].bytesize) do |_tar_entry|
+      _tar_entry.write(options[:content])
+    end
+  end
+end

lib/metacrunch/file/writer/zip_file_writer.rb

@@ -0,0 +1,29 @@
+require "zip"
+require_relative "../writer"
+
+class Metacrunch::File::Writer::ZipFileWriter
+  def self.supports?(filename)
+    !!filename[/\.zip\Z/]
+  end
+
+  def self.write(*args)
+  end
+
+=begin
+  def each
+    return enum_for(__method__) unless block_given?
+
+    Zip::File.open(@filename) do |_zip_file|
+      _zip_file.each do |_zip_entry|
+        unless _zip_entry.directory?
+          yield Metacrunch::File.new({
+            content: _zip_entry.get_input_stream.read,
+            entry_name: _zip_entry.name,
+            file_name: @filename
+          })
+        end
+      end
+    end
+  end
+=end
+end