Split file command into separate file (#9601)

commands/files.rb

@@ -0,0 +1,42 @@
+require 'json'
+require_relative '../lib/const'
+require_relative '../lib/convert_size'
+
+class Command
+  def self.files(pkg)
+    # Check if the package is even installed first, as this is the most likely reason we cannot find a filelist.
+    device_json = JSON.load_file(File.join(CREW_CONFIG_PATH, 'device.json'))
+    if device_json['installed_packages'].none? { |entry| entry['name'] == pkg.name }
+      puts "Package #{pkg.name} is not installed.".lightred
+      return
+    end
+
+    # We can't do anything if we don't have the filelist.
+    unless File.file?(filelist_path = File.join(CREW_META_PATH, "#{pkg.name}.filelist"))
+      puts "Package #{pkg.name} does not have a filelist :(".lightred
+      return
+    end
+
+    # Print the name and description of the package.
+    puts pkg.name.lightgreen + ": #{pkg.description}".lightblue
+
+    # Read the file into memory as an array of lines.
+    filelist = File.readlines(filelist_path, chomp: true)
+    size = 0
+
+    filelist.each do |filename|
+      # Skip calculating the filesize if the file doesn't exist.
+      next unless File.file?(filename)
+      # Ignore symlinks to prevent duplicating calculation.
+      next if File.symlink?(filename)
+      # Add the size of the file to the total size.
+      size += File.size(filename)
+    end
+
+    # Print the filelist, the total number of files, and the total size of those files.
+    puts filelist
+    puts "\nTotal found: #{filelist.count}".lightgreen
+    puts "Disk usage: #{human_size(size)}".lightgreen
+  end
+end
+