153 lines
4 KiB
Ruby
153 lines
4 KiB
Ruby
# encoding=utf-8
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# ^ to put the regex in utf-8 mode
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class Item
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module Search
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class Query
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def initialize(filters, user, text=nil)
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@filters = filters
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@user = user
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@text = text
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end
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def results
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@filters.map(&:to_query).inject(Item.all, &:merge).
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alphabetize_by_translations(Query.locale)
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end
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def to_s
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@text || @filters.map(&:to_s).join(' ')
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end
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def self.locale
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(I18n.fallbacks[I18n.locale] &
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I18n.locales_with_neopets_language_code).first
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end
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TEXT_FILTER_EXPR = /([+-]?)(?:(\p{Word}+):)?(?:"([^"]+)"|(\S+))/
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def self.from_text(text, user=nil)
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filters = []
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text.scan(TEXT_FILTER_EXPR) do |sign, key, quoted_value, unquoted_value|
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key = 'name' if key.blank?
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value = quoted_value || unquoted_value
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is_positive = (sign != '-')
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case key
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when 'name'
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filters << (is_positive ?
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Filter.name_includes(value, locale) :
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Filter.name_excludes(value, locale))
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when 'occupies'
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filters << (is_positive ?
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Filter.occupies(value, locale) :
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Filter.not_occupies(value, locale))
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when 'restricts'
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filters << (is_positive ?
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Filter.restricts(value, locale) :
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Filter.not_restricts(value, locale))
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when 'is'
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case value
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when 'nc'
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filters << (is_positive ? Filter.is_nc : Filter.is_not_nc)
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when 'np'
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filters << (is_positive ? Filter.is_np : Filter.is_not_np)
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when 'pb'
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filters << (is_positive ? Filter.is_pb : Filter.is_not_pb)
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else
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message = I18n.translate('items.search.errors.not_found.label',
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:label => "is:#{value}")
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raise Item::Search::Error, message
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end
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else
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message = I18n.translate('items.search.errors.not_found.label',
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:label => key)
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raise Item::Search::Error, message
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end
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end
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self.new(filters, user, text)
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end
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def self.from_params(params, user=nil)
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raise NotImplementedError, "TODO: Reimplemented Advanced Search"
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end
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end
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class Error < Exception
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end
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private
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# A Filter is basically a wrapper for an Item scope, with extra info about
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# how to convert it into a search query string.
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class Filter
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def initialize(query, text)
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@query = query
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@text = text
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end
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def to_query
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@query
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end
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def to_s
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@text
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end
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def inspect
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"#<#{self.class.name} #{@text.inspect}>"
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end
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def self.name_includes(value, locale)
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text = /\s/.match(value) ? '"' + value + '"' : value
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self.new Item.name_includes(value, locale), text
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end
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def self.name_excludes(value, locale)
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text = '-' + (/\s/.match(value) ? '"' + value + '"' : value)
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self.new Item.name_excludes(value, locale), text
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end
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def self.occupies(value, locale)
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self.new Item.occupies(value, locale), "occupies:#{value}"
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end
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def self.not_occupies(value, locale)
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self.new Item.not_occupies(value, locale), "-occupies:#{value}"
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end
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def self.restricts(value, locale)
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self.new Item.restricts(value, locale), "restricts:#{value}"
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end
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def self.not_restricts(value, locale)
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self.new Item.not_restricts(value, locale), "-restricts:#{value}"
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end
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def self.is_nc
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self.new Item.is_nc, 'is:nc'
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end
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def self.is_not_nc
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self.new Item.is_np, '-is:nc'
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end
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def self.is_np
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self.new Item.is_np, 'is:np'
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end
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def self.is_not_np
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self.new Item.is_nc, '-is:np'
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end
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def self.is_pb
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self.new Item.is_pb, 'is:pb'
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end
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def self.is_not_pb
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self.new Item.is_not_pb, '-is:pb'
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end
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end
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end
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end
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