Class: JekyllImport::Importers::S9YDatabase

Inherits:
JekyllImport::Importer show all
Defined in:
lib/jekyll-import/importers/s9y_database.rb

Class Method Summary collapse

Methods inherited from JekyllImport::Importer

inherited, run, stringify_keys, subclasses

Class Method Details

.clean_entities(text) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 340

def self.clean_entities(text)
  if text.respond_to?(:force_encoding)
    text.force_encoding("UTF-8")
  end
  text = HTMLEntities.new.encode(text, :named)
  # We don't want to convert these, it would break all
  # HTML tags in the post and comments.
  text.gsub!("&", "&")
  text.gsub!("&lt;", "<")
  text.gsub!("&gt;", ">")
  text.gsub!("&quot;", '"')
  text.gsub!("&apos;", "'")
  text.gsub!("/", "&#47;")
  text
end

.page_path(page_id, page_name_list) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 360

def self.page_path(page_id, page_name_list)
  if page_name_list.key?(page_id)
    [
      page_name_list[page_id][:slug],
      "/",
    ].join("")
  else
    ""
  end
end

.process(opts) ⇒ Object

Main migrator function. Call this to perform the migration.

dbname

The name of the database

user

The database user name

pass

The database user’s password

host

The address of the MySQL database host. Default: ‘localhost’

port

The port of the MySQL database server. Default: 3306

socket

The database socket’s path

options

A hash table of configuration options.

Supported options are:

:table_prefix

Prefix of database tables used by WordPress. Default: ‘serendipity_’

:clean_entities

If true, convert non-ASCII characters to HTML entities in the posts, comments, titles, and names. Requires the ‘htmlentities’ gem to work. Default: true.

:comments

If true, migrate post comments too. Comments are saved in the post’s YAML front matter. Default: true.

:categories

If true, save the post’s categories in its YAML front matter. Default: true.

:tags

If true, save the post’s tags in its YAML front matter. Default: true.

:extension

Set the post extension. Default: “html”

:drafts

If true, export drafts as well Default: true.

:markdown

If true, convert the content to markdown Default: false

:permalinks

If true, save the post’s original permalink in its YAML front matter. Default: false.



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 66

def self.process(opts)
  options = {
    :user           => opts.fetch("user", ""),
    :pass           => opts.fetch("password", ""),
    :host           => opts.fetch("host", "localhost"),
    :port						=> opts.fetch("port", 3306),
    :socket         => opts.fetch("socket", nil),
    :dbname         => opts.fetch("dbname", ""),
    :table_prefix   => opts.fetch("table_prefix", "serendipity_"),
    :clean_entities => opts.fetch("clean_entities", true),
    :comments       => opts.fetch("comments", true),
    :categories     => opts.fetch("categories", true),
    :tags           => opts.fetch("tags", true),
    :extension      => opts.fetch("extension", "html"),
    :drafts         => opts.fetch("drafts", true),
    :markdown       => opts.fetch("markdown", false),
    :permalinks     => opts.fetch("permalinks", false),
  }

  if options[:clean_entities]
    options[:clean_entities] = require_if_available("htmlentities", "clean_entities")
  end

  if options[:markdown]
    options[:markdown] = require_if_available("reverse_markdown", "markdown")
  end

  FileUtils.mkdir_p("_posts")
  FileUtils.mkdir_p("_drafts") if options[:drafts]

  db = Sequel.mysql2(options[:dbname], 
    :user     => options[:user], 
    :password => options[:pass],
    :socket   => options[:socket], 
    :host     => options[:host], 
    :port     => options[:port],
    :encoding => "utf8"
  )

  px = options[:table_prefix]

  page_name_list = {}

  page_name_query = %(
     SELECT
       entries.ID             AS `id`,
       entries.title          AS `title`
     FROM #{px}entries AS `entries`
  )

  db[page_name_query].each do |page|
    page[:slug] = sluggify(page[:title])

    page_name_list[ page[:id] ] = {
      :slug => page[:slug],
    }
  end

  posts_query = "
     SELECT
       entries.ID             AS `id`,
       entries.isdraft        AS `isdraft`,
       entries.title          AS `title`,
       entries.timestamp      AS `timestamp`,
       entries.body           AS `body`,
       entries.extended       AS `body_extended`,
       authors.realname     AS `author`,
       authors.username     AS `author_login`,
       authors.email        AS `author_email`
     FROM #{px}entries AS `entries`
       LEFT JOIN #{px}authors AS `authors`
         ON entries.authorid = authors.authorid"

  unless options[:drafts]
    posts_query << "WHERE posts.isdraft = 'false'"
  end

  db[posts_query].each do |post|
    process_post(post, db, options, page_name_list)
  end
end

.process_categories(db, options, post) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 229

def self.process_categories(db, options, post)
  return [] unless options[:categories]

  px = options[:table_prefix]

  cquery = %(
      SELECT
         categories.category_name AS `name`
       FROM
        #{px}entrycat AS `entrycat`,
        #{px}category AS `categories`
       WHERE
         entrycat.entryid = '#{post[:id]}' AND
         entrycat.categoryid = categories.categoryid
  )

  db[cquery].each_with_object([]) do |category, categories|
    categories << if options[:clean_entities]
                    clean_entities(category[:name])
                  else
                    category[:name]
                  end
  end
end

.process_comments(db, options, post) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 254

def self.process_comments(db, options, post)
  return [] unless options[:comments]

  px = options[:table_prefix]

  cquery = %(
      SELECT
         id           AS `id`,
         author       AS `author`,
         email        AS `author_email`,
         url          AS `author_url`,
         timestamp    AS `date`,
         body         AS `content`
       FROM #{px}comments
       WHERE
         entry_id = '#{post[:id]}' AND
         status = 'approved'
  )

  db[cquery].each_with_object([]) do |comment, comments|
    comcontent = comment[:content].to_s
    comauthor = comment[:author].to_s

    if comcontent.respond_to?(:force_encoding)
      comcontent.force_encoding("UTF-8")
    end

    if options[:clean_entities]
      comcontent = clean_entities(comcontent)
      comauthor = clean_entities(comauthor)
    end

    comments << {
      "id"           => comment[:id].to_i,
      "author"       => comauthor,
      "author_email" => comment[:author_email].to_s,
      "author_url"   => comment[:author_url].to_s,
      "date"         => comment[:date].to_s,
      "content"      => comcontent,
    }
  end.sort! { |a, b| a["id"] <=> b["id"] }
end

.process_permalink(db, options, post) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 320

def self.process_permalink(db, options, post)
  return unless options[:permalinks]

  px = options[:table_prefix]

  cquery = %(
      SELECT
         permalinks.permalink AS `permalink`
       FROM
  #{px}permalinks AS `permalinks`
       WHERE
         permalinks.entry_id = '#{post[:id]}' AND
         permalinks.type = 'entry'
  )

  db[cquery].each do |link|
    return "/#{link[:permalink]}"
  end
end

.process_post(post, db, options, page_name_list) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 148

def self.process_post(post, db, options, page_name_list)
  extension = options[:extension]

  title = post[:title]
  if options[:clean_entities]
    title = clean_entities(title)
  end

  slug = post[:slug]
  if !slug || slug.empty?
    slug = sluggify(title)
  end

  status = post[:isdraft] == "true" ? "draft" : "published"
  date = Time.at(post[:timestamp]).utc || Time.now.utc
  name = format("%02d-%02d-%02d-%s.%s", date.year, date.month, date.day, slug, extension)

  content = post[:body].to_s
  unless post[:body_extended].to_s.empty?
					content += "\n\n" + post[:body_extended].to_s
  end

  if options[:clean_entities]
    content = clean_entities(content)
  end

  if options[:markdown]
    content = ReverseMarkdown.convert(content)
  end

  categories = process_categories(db, options, post)
  comments = process_comments(db, options, post)
  tags = process_tags(db, options, post)
  permalink = process_permalink(db, options, post)

  # Get the relevant fields as a hash, delete empty fields and
  # convert to YAML for the header.
  data = {
    "layout"       => post[:type].to_s,
    "status"       => status.to_s,
    "published"    => status.to_s == "draft" ? nil : (status.to_s == "published"),
    "title"        => title.to_s,
    "author"       => {
      "display_name" => post[:author].to_s,
      "login"        => post[:author_login].to_s,
      "email"        => post[:author_email].to_s,
    },
    "author_login" => post[:author_login].to_s,
    "author_email" => post[:author_email].to_s,
    "date"         => date.to_s,
    "permalink"    => options[:permalinks] ? permalink : nil,
    "categories"   => options[:categories] ? categories : nil,
    "tags"         => options[:tags] ? tags : nil,
    "comments"     => options[:comments] ? comments : nil,
  }.delete_if { |_k, v| v.nil? || v == "" }.to_yaml

  if post[:type] == "page"
    filename = page_path(post[:id], page_name_list) + "index.#{extension}"
    FileUtils.mkdir_p(File.dirname(filename))
  elsif status == "draft"
    filename = "_drafts/#{slug}.#{extension}"
  else
    filename = "_posts/#{name}"
  end

  # Write out the data and content to file
  File.open(filename, "w") do |f|
    f.puts data
    f.puts "---"
    f.puts Util.wpautop(content)
  end
end

.process_tags(db, options, post) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 297

def self.process_tags(db, options, post)
  return [] unless options[:categories]

  px = options[:table_prefix]

  cquery = %(
      SELECT
         entrytags.tag AS `name`
       FROM
        #{px}entrytags AS `entrytags`
       WHERE
         entrytags.entryid = '#{post[:id]}'
  )

  db[cquery].each_with_object([]) do |tag, tags|
    tags << if options[:clean_entities]
              clean_entities(tag[:name])
            else
              tag[:name]
            end
  end
end

.require_deps ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 4

def self.require_deps
  JekyllImport.require_with_fallback(
    %w(
      rubygems
    sequel
    fileutils
    safe_yaml
    unidecode
    )
  )
end

.require_if_available(gem_name, option_name) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 221

def self.require_if_available(gem_name, option_name)
  require gem_name
  return true
rescue LoadError
  STDERR.puts "Could not require '#{gem_name}', so the :#{option_name} option is now disabled."
  return true
end

.sluggify(title) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 356

def self.sluggify(title)
  title.to_ascii.downcase.gsub(%r![^0-9A-Za-z]+!, " ").strip.tr(" ", "-")
end

.specify_options(c) ⇒ Object 



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# File 'lib/jekyll-import/importers/s9y_database.rb', line 16

def self.specify_options(c)
  c.option "dbname", "--dbname DB", "Database name (default: '')"
  c.option "socket", "--socket SOCKET", "Database socket (default: '')"
  c.option "user", "--user USER", "Database user name (default: '')"
  c.option "password", "--password PW", "Database user's password (default: '')"
  c.option "host", "--host HOST", "Database host name (default: 'localhost')"
  c.option "port", "--port PORT", "Custom database port connect to (default: 3306)"
  c.option "table_prefix", "--table_prefix PREFIX", "Table prefix name (default: 'serendipity_')"
  c.option "clean_entities", "--clean_entities", "Whether to clean entities (default: true)"
  c.option "comments", "--comments", "Whether to import comments (default: true)"
  c.option "categories", "--categories", "Whether to import categories (default: true)"
  c.option "tags", "--tags", "Whether to import tags (default: true)"
  c.option "drafts", "--drafts", "Whether to export drafts as well"
  c.option "markdown", "--markdown", "convert into markdown format (default: false)"
  c.option "permalinks", "--permalinks", "preserve S9Y permalinks (default: false)"
end