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30990006a9
This reduces chances of errors where consumers of strings mutate inputs and reduces memory usage of the app. Test suite passes now, but there may be some stuff left, so we will run a few sites on a branch prior to merging
36 lines
999 B
Ruby
36 lines
999 B
Ruby
# frozen_string_literal: true
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require 'rchardet'
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module Encodings
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def self.to_utf8(string)
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result = CharDet.detect(string)
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encoded_string = try_utf8(string, result['encoding']) if result && result['encoding']
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encoded_string = force_utf8(string) if encoded_string.nil?
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encoded_string
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end
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def self.try_utf8(string, source_encoding)
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encoded = string.encode(Encoding::UTF_8, source_encoding)
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encoded&.valid_encoding? ? delete_bom!(encoded) : nil
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rescue Encoding::InvalidByteSequenceError,
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Encoding::UndefinedConversionError,
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Encoding::ConverterNotFoundError
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nil
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end
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def self.force_utf8(string)
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encoded_string = string.encode(Encoding::UTF_8,
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undef: :replace,
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invalid: :replace,
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replace: '')
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delete_bom!(encoded_string)
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end
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def self.delete_bom!(string)
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string.sub!(/\A\xEF\xBB\xBF/, '') unless string.blank?
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string
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end
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end
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