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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