--- /dev/null
+#!/usr/bin/env ruby
+
+require 'rubygems'
+require 'uri'
+require 'tempfile'
+require 'trollop'
+require "sup"
+
+## save a message 'm' to an open file pointer 'fp'
+def save m, fp
+ m.source.each_raw_full_message_line(m.source_info) { |l| fp.print l }
+end
+
+opts = Trollop::options do
+ version "sup-sync-back (sup #{Redwood::VERSION})"
+ banner <<EOS
+Partially synchronizes a message source with the Sup index by deleting
+or moving any messages from the source that are marked as deleted or
+spam in the Sup index.
+
+Currently only works with mbox sources.
+
+Usage:
+ sup-sync-back [options] <source>*
+
+where <source>* is zero or more source URIs. If no sources are given,
+sync back all usual sources.
+
+You probably want to run sup-sync --changed after this command.
+
+Options include:
+EOS
+ opt :delete_deleted, "Delete deleted messages.", :default => false, :short => "d"
+ opt :move_deleted, "Move deleted messages to a local mbox file.", :type => String, :short => :none
+ opt :delete_spam, "Delete spam messages.", :default => false, :short => "s"
+ opt :move_spam, "Move spam messages to a local mbox file.", :type => String, :short => :none
+ opt :verbose, "Print message ids as they're processed."
+ opt :dry_run, "Don't actually modify the index. Probably only useful with --verbose.", :short => "-n"
+ opt :version, "Show version information", :short => :none
+
+ conflicts :delete_deleted, :move_deleted
+ conflicts :delete_spam, :move_spam
+end
+
+Redwood::start
+index = Redwood::Index.new
+index.load
+
+sources = ARGV.map do |uri|
+ s = index.source_for(uri) or Trollop::die "Unknown source: #{uri}. Did you add it with sup-add first?"
+ s.is_a?(Redwood::MBox::Loader) or Trollop::die "#{uri} is not an mbox source."
+ s
+end
+
+unless opts[:dry_run]
+ deleted_fp = File.open(opts[:move_deleted], "a") if opts[:move_deleted]
+ spam_fp = File.open(opts[:move_spam], "a") if opts[:move_spam]
+end
+
+begin
+ sources.each { |s| s.reset! }
+
+ sources.each do |source|
+ $stderr.puts "Scanning #{source}..."
+ num_deleted = num_moved = num_scanned = 0
+
+ out_fp = Tempfile.new "sup-sync-back-#{source.id}"
+ Redwood::PollManager.add_messages_from source do |m, offset, entry|
+ num_scanned += 1
+
+ if entry
+ labels = entry[:label].split.map { |x| x.intern }.to_boolean_h
+
+ if labels.member? :deleted
+ if opts[:delete_deleted]
+ puts "Dropping deleted message #{source}##{offset}" if opts[:verbose]
+ num_deleted += 1
+ elsif opts[:move_deleted] && labels.member?(:deleted)
+ puts "Moving deleted message #{source}##{offset}" if opts[:verbose]
+ save m, deleted_fp unless opts[:dry_run]
+ num_moved += 1
+ end
+
+ elsif labels.member? :spam
+ if opts[:delete_spam]
+ puts "Deleting spam message #{source}##{offset}" if opts[:verbose]
+ num_deleted += 1
+ elsif opts[:move_spam] && labels.member?(:spam)
+ puts "Moving spam message #{source}##{offset}" if opts[:verbose]
+ save m, spam_fp unless opts[:dry_run]
+ num_moved += 1
+ end
+ else
+ save m, out_fp unless opts[:dry_run]
+ end
+ else
+ save m, out_fp unless opts[:dry_run]
+ end
+
+ nil # don't actually add anything!
+ end
+ $stderr.puts "Scanned #{num_scanned}, deleted #{num_deleted}, moved #{num_moved} messages from #{source}."
+ out_fp.close unless opts[:dry_run]
+
+ unless opts[:dry_run]
+ deleted_fp.flush
+ spam_fp.flush
+ out_fp.close
+ FileUtils.mv out_fp.path, URI(source.uri).path
+ end
+ end
+
+ unless opts[:dry_run]
+ deleted_fp.close
+ spam_fp.close
+ end
+
+ $stderr.puts "Done. You should run sup-sync --changed #{sources.join(' ')}"
+rescue Exception => e
+ File.open("sup-exception-log.txt", "w") { |f| f.puts e.backtrace }
+ raise
+ensure
+ Redwood::finish
+end
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