45 lines
1.1 KiB
Ruby
45 lines
1.1 KiB
Ruby
# encoding: utf-8
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# frozen_string_literal: true
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module Mail #:nodoc:
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module Multibyte #:nodoc:
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# Returns a regular expression that matches valid characters in the current encoding
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def self.valid_character
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VALID_CHARACTER[Encoding.default_external.to_s]
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end
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# Returns true if string has valid utf-8 encoding
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def self.is_utf8?(string)
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case string.encoding
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when Encoding::UTF_8
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verify(string)
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when Encoding::ASCII_8BIT, Encoding::US_ASCII
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verify(to_utf8(string))
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else
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false
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end
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end
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# Verifies the encoding of a string
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def self.verify(string)
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string.valid_encoding?
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end
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# Verifies the encoding of the string and raises an exception when it's not valid
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def self.verify!(string)
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raise EncodingError.new("Found characters with invalid encoding") unless verify(string)
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end
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# Removes all invalid characters from the string.
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#
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# Note: this method is a no-op in Ruby 1.9
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def self.clean(string)
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string
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end
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def self.to_utf8(string)
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string.dup.force_encoding(Encoding::UTF_8)
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end
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end
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end
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