lib/zold/commands/diff.rb
# frozen_string_literal: true
# Copyright (c) 2018-2023 Zerocracy
#
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# SOFTWARE.
require 'tempfile'
require 'slop'
require 'diffy'
require 'rainbow'
require_relative 'thread_badge'
require_relative 'args'
require_relative '../log'
require_relative '../patch'
require_relative '../wallet'
# DIFF command.
# Author:: Yegor Bugayenko (yegor256@gmail.com)
# Copyright:: Copyright (c) 2018 Yegor Bugayenko
# License:: MIT
module Zold
# DIFF pulling command
class Diff
prepend ThreadBadge
def initialize(wallets:, copies:, log: Log::NULL)
@wallets = wallets
@copies = copies
@log = log
end
def run(args = [])
opts = Slop.parse(args, help: true, suppress_errors: true) do |o|
o.banner = "Usage: zold diff [ID...] [options]
Available options:"
o.bool '--help', 'Print instructions'
end
mine = Args.new(opts, @log).take || return
raise 'At least one wallet ID is required' if mine.empty?
stdout = ''
mine.map { |i| Id.new(i) }.each do |id|
stdout += diff(id, Copies.new(File.join(@copies, id)), opts)
end
stdout
end
private
def diff(id, cps, _)
raise "There are no remote copies, try 'zold fetch' first" if cps.all.empty?
cps = cps.all.sort_by { |c| c[:score] }.reverse
patch = Patch.new(@wallets, log: @log)
cps.each do |c|
patch.join(Wallet.new(c[:path]))
end
before = @wallets.acq(id) do |wallet|
File.read(wallet.path)
end
after = ''
Tempfile.open(['', Wallet::EXT]) do |f|
patch.save(f.path, overwrite: true)
after = File.read(f)
end
diff = Diffy::Diff.new(before, after, context: 0).to_s(:color)
@log.info(diff)
diff
end
end
end