224 lines
7.1 KiB
Ruby
224 lines
7.1 KiB
Ruby
require "mysql2"
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require File.expand_path(File.dirname(__FILE__) + "/base.rb")
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# Call it like this:
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# RAILS_ENV=production ruby script/import_scripts/mybb.rb
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class ImportScripts::MyBB < ImportScripts::Base
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MYBB_DB = "mybb_db"
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TABLE_PREFIX = "mybb_"
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BATCH_SIZE = 1000
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def initialize
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super
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@client = Mysql2::Client.new(
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host: "localhost",
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username: "root",
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#password: "",
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database: MYBB_DB
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)
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end
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def execute
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import_users
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import_categories
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import_posts
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import_private_messages
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suspend_users
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end
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def import_users
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puts '', "creating users"
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total_count = mysql_query("SELECT count(*) count
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FROM #{TABLE_PREFIX}users u
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JOIN #{TABLE_PREFIX}usergroups g ON g.gid = u.usergroup
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WHERE g.title != 'Banned';").first['count']
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batches(BATCH_SIZE) do |offset|
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results = mysql_query(
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"SELECT uid id, email email, username, regdate, g.title `group`
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FROM #{TABLE_PREFIX}users u
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JOIN #{TABLE_PREFIX}usergroups g ON g.gid = u.usergroup
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WHERE g.title != 'Banned'
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ORDER BY u.uid ASC
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LIMIT #{BATCH_SIZE}
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OFFSET #{offset};")
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break if results.size < 1
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next if all_records_exist? :users, results.map {|u| u["id"].to_i}
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create_users(results, total: total_count, offset: offset) do |user|
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{ id: user['id'],
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email: user['email'],
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username: user['username'],
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created_at: Time.zone.at(user['regdate']),
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moderator: user['group'] == 'Super Moderators',
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admin: user['group'] == 'Administrators' }
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end
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end
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end
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def import_categories
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results = mysql_query("
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SELECT fid id, pid parent_id, left(name, 50) name, description
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FROM #{TABLE_PREFIX}forums
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ORDER BY pid ASC, fid ASC
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")
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create_categories(results) do |row|
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h = {id: row['id'], name: CGI.unescapeHTML(row['name']), description: CGI.unescapeHTML(row['description'])}
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if row['parent_id'].to_i > 0
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h[:parent_category_id] = category_id_from_imported_category_id(row['parent_id'])
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end
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h
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end
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end
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def import_posts
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puts "", "creating topics and posts"
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total_count = mysql_query("SELECT count(*) count from #{TABLE_PREFIX}posts").first["count"]
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batches(BATCH_SIZE) do |offset|
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results = mysql_query("
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SELECT p.pid id,
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p.tid topic_id,
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t.fid category_id,
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t.subject title,
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t.firstpost first_post_id,
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p.uid user_id,
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p.message raw,
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p.dateline post_time
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FROM #{TABLE_PREFIX}posts p,
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#{TABLE_PREFIX}threads t
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WHERE p.tid = t.tid
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ORDER BY p.dateline
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LIMIT #{BATCH_SIZE}
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OFFSET #{offset};
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")
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break if results.size < 1
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next if all_records_exist? :posts, results.map {|m| m['id'].to_i}
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create_posts(results, total: total_count, offset: offset) do |m|
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skip = false
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mapped = {}
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# If you have imported a phpbb forum to mybb previously there might
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# be a problem with #{TABLE_PREFIX}threads.firstpost. If these ids are wrong
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# the thread cannot be imported to discourse as the topic post is
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# missing. This query retrieves the first_post_id manually. As it
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# will decrease the performance it is commented out by default.
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# m['first_post_id'] = mysql_query("
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# SELECT p.pid id,
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# FROM #{TABLE_PREFIX}posts p,
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# #{TABLE_PREFIX}threads t
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# WHERE p.tid = #{m['topic_id']} AND t.tid = #{m['topic_id']}
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# ORDER BY p.dateline
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# LIMIT 1
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# ").first['id']
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mapped[:id] = m['id']
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mapped[:user_id] = user_id_from_imported_user_id(m['user_id']) || -1
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mapped[:raw] = process_mybb_post(m['raw'], m['id'])
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mapped[:created_at] = Time.zone.at(m['post_time'])
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if m['id'] == m['first_post_id']
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mapped[:category] = category_id_from_imported_category_id(m['category_id'])
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mapped[:title] = CGI.unescapeHTML(m['title'])
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else
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parent = topic_lookup_from_imported_post_id(m['first_post_id'])
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if parent
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mapped[:topic_id] = parent[:topic_id]
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else
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puts "Parent post #{m['first_post_id']} doesn't exist. Skipping #{m["id"]}: #{m["title"][0..40]}"
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skip = true
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end
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end
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skip ? nil : mapped
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end
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end
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end
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def import_private_messages
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puts "", "private messages are not implemented"
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end
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def suspend_users
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puts '', "banned users are not implemented"
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end
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# Discourse usernames don't allow spaces
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def convert_username(username, post_id)
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count = 0
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username.gsub!(/\s+/) { |a| count += 1; '_' }
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# Warn on MyBB bug that places post text in the quote line - http://community.mybb.com/thread-180526.html
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if count > 5
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puts "Warning: probably incorrect quote in post #{post_id}"
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end
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return username
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end
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# Take an original post id and return the migrated topic id and post number for it
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def post_id_to_post_num_and_topic(quoted_post_id, post_id)
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quoted_post_id_from_imported = post_id_from_imported_post_id(quoted_post_id.to_i)
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if quoted_post_id_from_imported
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begin
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post = Post.find(quoted_post_id_from_imported)
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return "post:#{post.post_number}, topic:#{post.topic_id}"
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rescue
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puts "Could not find migrated post #{quoted_post_id_from_imported} quoted by original post #{post_id} as #{quoted_post_id}"
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return ""
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end
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else
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puts "Original post #{post_id} quotes nonexistent post #{quoted_post_id}"
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return ""
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end
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end
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def process_mybb_post(raw, import_id)
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s = raw.dup
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# convert the quote line
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s.gsub!(/\[quote='([^']+)'.*?pid='(\d+).*?\]/) {
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"[quote=\"#{convert_username($1, import_id)}, " + post_id_to_post_num_and_topic($2, import_id) + '"]'
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}
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# :) is encoded as <!-- s:) --><img src="{SMILIES_PATH}/icon_e_smile.gif" alt=":)" title="Smile" /><!-- s:) -->
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s.gsub!(/<!-- s(\S+) -->(?:.*)<!-- s(?:\S+) -->/, '\1')
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# Some links look like this: <!-- m --><a class="postlink" href="http://www.onegameamonth.com">http://www.onegameamonth.com</a><!-- m -->
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s.gsub!(/<!-- \w --><a(?:.+)href="(\S+)"(?:.*)>(.+)<\/a><!-- \w -->/, '[\2](\1)')
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# Many phpbb bbcode tags have a hash attached to them. Examples:
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# [url=https://google.com:1qh1i7ky]click here[/url:1qh1i7ky]
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# [quote="cybereality":b0wtlzex]Some text.[/quote:b0wtlzex]
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s.gsub!(/:(?:\w{8})\]/, ']')
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# Remove mybb video tags.
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s.gsub!(/(^\[video=.*?\])|(\[\/video\]$)/, '')
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s = CGI.unescapeHTML(s)
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# phpBB shortens link text like this, which breaks our markdown processing:
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# [http://answers.yahoo.com/question/index ... 223AAkkPli](http://answers.yahoo.com/question/index?qid=20070920134223AAkkPli)
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#
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# Work around it for now:
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s.gsub!(/\[http(s)?:\/\/(www\.)?/, '[')
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s
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end
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def mysql_query(sql)
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@client.query(sql, cache_rows: false)
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end
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end
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ImportScripts::MyBB.new.perform
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