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I18n: applied Luca Guidi's patch for better #interpolate performance
[#943 state:resolved] Signed-off-by: Jeremy Kemper <jeremy@bitsweat.net>
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1 changed files with 22 additions and 19 deletions
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@ -3,6 +3,9 @@ require 'strscan'
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module I18n
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module Backend
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class Simple
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INTERPOLATION_RESERVED_KEYS = %w(scope default)
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MATCH = /(\\\\)?\{\{([^\}]+)\}\}/
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# Accepts a list of paths to translation files. Loads translations from
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# plain Ruby (*.rb) or YAML files (*.yml). See #load_rb and #load_yml
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# for details.
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@ -114,29 +117,29 @@ module I18n
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# the <tt>{{...}}</tt> key in a string (once for the string and once for the
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# interpolation).
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def interpolate(locale, string, values = {})
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return string if !string.is_a?(String)
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return string unless string.is_a?(String)
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string = string.gsub(/%d/, '{{count}}').gsub(/%s/, '{{value}}')
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if string.respond_to?(:force_encoding)
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original_encoding = string.encoding
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string.force_encoding(Encoding::BINARY)
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end
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s = StringScanner.new(string)
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while s.skip_until(/\{\{/)
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s.string[s.pos - 3, 1] = '' and next if s.pre_match[-1, 1] == '\\'
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start_pos = s.pos - 2
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key = s.scan_until(/\}\}/)[0..-3]
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end_pos = s.pos - 1
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raise ReservedInterpolationKey.new(key, string) if %w(scope default).include?(key)
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raise MissingInterpolationArgument.new(key, string) unless values.has_key? key.to_sym
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s.string[start_pos..end_pos] = values[key.to_sym].to_s
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s.unscan
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original_encoding = string.encoding
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string.force_encoding(Encoding::BINARY)
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end
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result = string.gsub(MATCH) do
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escaped, pattern, key = $1, $2, $2.to_sym
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if escaped
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pattern
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elsif INTERPOLATION_RESERVED_KEYS.include?(pattern)
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raise ReservedInterpolationKey.new(pattern, string)
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elsif !values.include?(key)
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raise MissingInterpolationArgument.new(pattern, string)
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else
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values[key].to_s
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end
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end
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result = s.string
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result.force_encoding(original_encoding) if original_encoding
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result
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end
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