method

is_utf8?

v5.1.7 - Show latest stable - Class: String

is_utf8?()

public

Returns true if string has utf_8 encoding.

utf_8_str = "some string".encode "UTF-8"
iso_str = "some string".encode "ISO-8859-1"

utf_8_str.is_utf8? # => true
iso_str.is_utf8?   # => false

# File activesupport/lib/active_support/core_ext/string/multibyte.rb, line 43
  def is_utf8?
    case encoding
    when Encoding::UTF_8
      valid_encoding?
    when Encoding::ASCII_8BIT, Encoding::US_ASCII
      dup.force_encoding(Encoding::UTF_8).valid_encoding?
    else
      false
    end
  end

is_utf8?

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