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#!/usr/bin/ruby
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# vim: set nosta noet ts=4 sw=4:
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# A collection of messages authored from a unique user.
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#
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# Note that Ezmlm uses the "real name" part of an address
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# to identify an author.
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#
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# author = Ezmlm::List::Author.new( list, 'acgcbmbmeapgpfckcdol' )
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# author.name #=> "Help - navigate on interface?"
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# author.first.date.to_s #=> "2017-05-07T14:55:05-07:00"
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#
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#
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# == Version
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#
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# $Id$
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#
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#---
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require 'pathname'
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require 'ezmlm' unless defined?( Ezmlm )
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### A collection of messages for a specific author.
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###
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class Ezmlm::List::Author
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include Enumerable
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### Instantiate a new list of messages given
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### a +list+ and an +author_id+.
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###
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def initialize( list, author_id )
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raise ArgumentError, "Unknown list object." unless list.respond_to?( :listdir )
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raise ArgumentError, "Malformed Author ID." unless author_id =~ /^\w{20}$/
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raise "Archiving is not enabled." unless list.archived?
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@list = list
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@id = author_id
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@messages = nil
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self.load_index
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end
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# The list object this message is stored in.
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attr_reader :list
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# The author's identifier.
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attr_reader :id
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# The author's name.
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attr_reader :name
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# An array of messages this author has sent.
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attr_reader :messages
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# An array of threads this author has participated in.
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attr_reader :threads
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### Enumerable API: Lazy load each message ID as a
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### Ezmlm::List::Message, yielding it to the block.
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###
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def each
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self.load_index # refresh for any updates since object was created
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self.messages.each do |id|
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yield Ezmlm::List::Message.new( self.list, id )
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end
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end
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alias_method :each_message, :each
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### Lazy load each thread ID as a Ezmlm::List::Thread, yielding it to the block.
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###
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def each_thread
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self.load_index # refresh for any updates since object was created
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self.threads.each do |id|
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yield Ezmlm::List::Thread.new( self.list, id )
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end
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end
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#########
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protected
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#########
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### Parse the author index into an array of Messages.
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###
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def load_index
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@messages = []
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@threads = []
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path = self.author_path
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raise "Unknown author: %p" % [ self.id ] unless path.exist?
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path.open( 'r', encoding: Encoding::ISO8859_1 ) do |fh|
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fh.each_line.with_index do |line, i|
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if i.zero?
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@name = line.match( /^\w+ (.+)/ )[1]
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else
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match = line.match( /^(\d+):\d+:(\w+) / ) or next
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self.messages << match[1].to_i
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self.threads << match[2]
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end
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end
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end
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end
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### Return the path on disk for the author index.
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###
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def author_path
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prefix = self.id[ 0 .. 1 ]
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hash = self.id[ 2 .. -1 ]
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return self.list.listdir + 'archive' + 'authors' + prefix + hash
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end
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end # class Ezmlm::List::Author
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