contentparser

#!/usr/bin/env ruby
# frozen_string_literal: true
#
# Copyright (C) 2018 Harald Sitter <sitter@kde.org>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 3 of
# the License or any later version accepted by the membership of 
# KDE e.V. (or its successor approved by the membership of KDE
# e.V.), which shall act as a proxy defined in Section 14 of
# version 3 of the license.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Parses output of 7z inspecting a squashfs and sorts by compressed size.

# bionic 7z needed.
# 7z l -slt kde-frameworks-5_19.squashfs &> content

class Entry
  attr_reader :path
  attr_reader :folder
  attr_reader :size
  attr_reader :packed_size
  attr_reader :modified
  attr_reader :mode

  def initialize(blob)
    hash = blob.split("\n")
    hash = hash.collect do |line|
      line.split(' = ', 2)
    end.to_h
    @path = hash.delete('Path')
    @folder = hash.delete('Folder')
    @size = hash.delete('Size').to_i
    @packed_size = hash.delete('Packed Size').to_i
    @modified = hash.delete('Modified')
    @mode = hash.delete('Mode')
    raise hash unless hash.empty?
  end
end

data = File.read('content')
data = data.split("----------\n", 2)[-1]
blobs = data.split("\n\n")
entries = blobs.collect { |x| Entry.new(x) }
entries = entries.sort_by!(&:packed_size)
require 'pp'
entries.each do |x|
  puts format("%-100s %s\n", x.path, x.packed_size)
  # puts "#{x.path}"
end