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Does not raise error when it has invalid thumbails data (#65) #66

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Does not raise error when it has invalid thumbails data (#65) #66

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7 changes: 6 additions & 1 deletion lib/exifr/tiff.rb
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Expand Up @@ -384,7 +384,12 @@ def initialize(file)
@jpeg_thumbnails = @ifds.map do |v|
if v.jpeg_interchange_format && v.jpeg_interchange_format_length
start, length = v.jpeg_interchange_format, v.jpeg_interchange_format_length
data[start..(start + length)]
if Integer === start && Integer === length
data[start..(start + length)]
else
EXIFR.logger.warn("Non numeric JpegInterchangeFormat data")
nil
end
end
end.compact
end
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