67b96135dd
Monkey-patch Symbol#to_s to return a frozen (immutable) string instead of a mutable string. This should reduce string allocations, and thereby reduce memory usage and garbage collector pressure, but it may be incompatible with libraries that expect Symbol#to_s to return a mutable string. https://bugs.ruby-lang.org/issues/16150 https://github.com/Shopify/symbol-fstring
72 lines
1.9 KiB
Ruby
72 lines
1.9 KiB
Ruby
module Danbooru
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module Extensions
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module String
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def to_escaped_for_sql_like
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string = self.gsub(/%|_|\*|\\\*|\\\\|\\/) do |str|
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case str
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when '%' then '\%'
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when '_' then '\_'
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when '*' then '%'
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when '\*' then '*'
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when '\\\\' then '\\\\'
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when '\\' then '\\\\'
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end
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end
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string
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end
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# escape \ and * characters so that they're treated literally in LIKE searches.
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def escape_wildcards
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gsub(/\\/, '\\\\').gsub(/\*/, '\*')
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end
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def to_escaped_for_tsquery_split
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scan(/\S+/).map {|x| x.to_escaped_for_tsquery}.join(" & ")
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end
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def to_escaped_for_tsquery
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"'#{gsub(/\0/, '').gsub(/'/, '\0\0').gsub(/\\/, '\0\0\0\0')}'"
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end
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def truthy?
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self.match?(/\A(true|t|yes|y|on|1)\z/i)
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end
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def falsy?
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self.match?(/\A(false|f|no|n|off|0)\z/i)
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end
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def ilike?(pattern)
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pattern = Regexp.escape(pattern).gsub(/\\\*/, ".*")
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match?(/\A#{pattern}\z/i)
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end
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def normalize_whitespace
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# Normalize various horizontal space characters to ASCII space.
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text = gsub(/\p{Zs}|\t/, " ")
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# Strip various zero width space characters. Zero width joiner (200D)
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# is allowed because it's used in emoji.
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text = text.gsub(/[\u180E\u200B\u200C\u2060\uFEFF]/, "")
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# Normalize various line ending characters to CRLF.
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text = text.gsub(/\r?\n|\r|\v|\f|\u0085|\u2028|\u2029/, "\r\n")
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text
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end
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end
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end
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end
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class String
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include Danbooru::Extensions::String
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end
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# Make Symbol#to_s return a frozen string. This reduces allocations, but may be
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# incompatible with some libraries.
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#
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# https://bugs.ruby-lang.org/issues/16150
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# https://github.com/Shopify/symbol-fstring
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Symbol.alias_method(:to_s, :name)
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