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# File 'lib/vcardio/validator/document_validator.rb', line 7
def self.call(document)
lines = document.reject(&:empty?)
begin_vcard = false
end_vcard = false
fn = false
version = false
lines.each_with_index do |line, i|
if i == 0 && /\ABEGIN:VCARD\z/.match(line)
begin_vcard = true
elsif (i == lines.size - 1) && /\AEND:VCARD\z/.match(line)
end_vcard = true
elsif /\AFN:/.match(line)
fn = true
elsif i == 1 && /\AVERSION:(3.0|4.0)\z/.match(line)
version = true
end
end
fail(VCardio::Error, 'Invalid vCard: First line must be BEGIN:VCARD') unless begin_vcard
fail(VCardio::Error, 'Invalid vCard: Last line must be END:VCARD') unless end_vcard
fail(VCardio::Error, 'Invalid vCard: Second line must be VERSION with value 3.0 or 4.0') unless version
fail(VCardio::Error, 'Invalid vCard: Must contain the FN property') unless fn
end
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