92 lines
2.5 KiB
Ruby
92 lines
2.5 KiB
Ruby
# Container for a set of pages with methods for manipulation.
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class PageSet < Array
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attr_reader :web
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def initialize(web, pages = nil, condition = nil)
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@web = web
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# if pages is not specified, make a list of all pages in the web
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if pages.nil?
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super(web.pages)
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# otherwise use specified pages and condition to produce a set of pages
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elsif condition.nil?
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super(pages)
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else
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super(pages.select { |page| condition[page] })
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end
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end
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def most_recent_revision
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self.map { |page| page.revised_at }.max || Time.at(0)
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end
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def by_name
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PageSet.new(@web, sort_by { |page| page.name })
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end
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alias :sort :by_name
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def by_revision
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PageSet.new(@web, sort_by { |page| page.revised_at }).reverse
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end
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def pages_that_reference(page_name)
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all_referring_pages = WikiReference.pages_that_reference(page_name)
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self.select { |page| all_referring_pages.include?(page.name) }
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end
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def pages_that_link_to(page_name)
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all_linking_pages = WikiReference.pages_that_link_to(page_name)
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self.select { |page| all_linking_pages.include?(page.name) }
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end
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def pages_that_include(page_name)
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all_including_pages = WikiReference.pages_that_include(page_name)
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self.select { |page| all_including_pages.include?(page.name) }
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end
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def pages_authored_by(author)
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all_pages_authored_by_the_author =
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Page.connection.select_all(sanitize_sql([
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"SELECT page_id FROM revision WHERE author = '?'", author]))
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self.select { |page| page.authors.include?(author) }
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end
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def characters
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self.inject(0) { |chars,page| chars += page.content.size }
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end
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# Returns all the orphaned pages in this page set. That is,
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# pages in this set for which there is no reference in the web.
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# The HomePage and author pages are always assumed to have
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# references and so cannot be orphans
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# Pages that refer to themselves and have no links from outside are oprphans.
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def orphaned_pages
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never_orphans = web.authors + ['HomePage']
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self.select { |page|
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if never_orphans.include? page.name
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false
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else
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references = pages_that_reference(page.name)
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references.empty? or references == [page]
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end
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}
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end
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# Returns all the wiki words in this page set for which
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# there are no pages in this page set's web
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def wanted_pages
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wiki_words - web.select.names
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end
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def names
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self.map { |page| page.name }
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end
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def wiki_words
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self.inject([]) { |wiki_words, page|
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wiki_words + page.wiki_words
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}.flatten.uniq.sort
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end
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end
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