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# frozen_string_literal: true
module RQRCode
module Export
module HTML
TABLE_OPEN = "<table>"
TABLE_CLOSE = "</table>"
TR_OPEN = "<tr>"
TR_CLOSE = "</tr>"
TD_BLACK = '<td class="black"></td>'
TD_WHITE = '<td class="white"></td>'
def as_html
qr = @qrcode
module_count = qr.module_count
estimated_size = (module_count * module_count * 26) + (module_count * 9) + 15
result = String.new(capacity: estimated_size)
result << TABLE_OPEN
module_count.times do |row_index|
result << TR_OPEN
module_count.times do |col_index|
result << (qr.checked?(row_index, col_index) ? TD_BLACK : TD_WHITE)
end
result << TR_CLOSE
end
result << TABLE_CLOSE
result
end
end
end
end
RQRCode::QRCode.include RQRCode::Export::HTML
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