72 lines
2.2 KiB
Ruby
72 lines
2.2 KiB
Ruby
class AliasAndImplicationImporter
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attr_accessor :text, :commands, :forum_id, :rename_aliased_pages
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def initialize(text, forum_id, rename_aliased_pages = "0")
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@forum_id = forum_id
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@text = text
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@rename_aliased_pages = rename_aliased_pages
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end
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def process!
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tokens = tokenize(text)
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parse(tokens)
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end
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def rename_aliased_pages?
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@rename_aliased_pages == "1"
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end
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private
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def tokenize(text)
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text.gsub!(/^\s+/, "")
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text.gsub!(/\s+$/, "")
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text.gsub!(/ {2,}/, " ")
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text.split(/\r\n|\r|\n/).map do |line|
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if line =~ /^create alias (\S+) -> (\S+)$/i
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[:create_alias, $1, $2]
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elsif line =~ /^create implication (\S+) -> (\S+)$/i
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[:create_implication, $1, $2]
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elsif line =~ /^remove alias (\S+) -> (\S+)$/i
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[:remove_alias, $1, $2]
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elsif line =~ /^remove implication (\S+) -> (\S+)$/i
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[:remove_implication, $1, $2]
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elsif line.empty?
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# do nothing
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else
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raise "Unparseable line: #{line}"
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end
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end
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end
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def parse(tokens)
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ActiveRecord::Base.transaction do
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tokens.map do |token|
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case token[0]
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when :create_alias
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tag_alias = TagAlias.create(:forum_topic_id => forum_id, :status => "pending", :antecedent_name => token[1], :consequent_name => token[2])
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tag_alias.rename_wiki_and_artist if rename_aliased_pages?
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tag_alias.delay(:queue => "default").process!
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when :create_implication
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tag_implication = TagImplication.create(:forum_topic_id => forum_id, :status => "pending", :antecedent_name => token[1], :consequent_name => token[2])
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tag_implication.delay(:queue => "default").process!
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when :remove_alias
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tag_alias = TagAlias.where("antecedent_name = ?", token[1]).first
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raise "Alias for #{token[1]} not found" if tag_alias.nil?
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tag_alias.destroy
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when :remove_implication
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tag_implication = TagImplication.where("antecedent_name = ? and consequent_name = ?", token[1], token[2]).first
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raise "Implication for #{token[1]} not found" if tag_implication.nil?
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tag_implication.destroy
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else
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raise "Unknown token: #{token[0]}"
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end
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end
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end
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end
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end
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