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adding validation.

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This commit is contained in:
Will Charczuk 2017-02-03 11:26:53 -08:00
parent 3ea3c9ac10
commit e735797037
20 changed files with 285 additions and 7 deletions
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2
image_writer.go
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@ -38,5 +38,5 @@ func (ir *ImageWriter) Image() (image.Image, error) {
if ir.contents != nil && ir.contents.Len() > 0 {
return png.Decode(ir.contents)
}
return nil, errors.New("No valid sources for image data, cannot continue.")
return nil, errors.New("no valid sources for image data, cannot continue")
}