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format.clj
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format.clj
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(ns image-resizer.format
(:require
[image-resizer.fs :as fs]
[image-resizer.core :refer :all])
(:import
[java.io File ByteArrayOutputStream ByteArrayInputStream]
[java.awt.image BufferedImage]
[javax.imageio ImageIO ImageWriter]))
(defn as-file [^BufferedImage buffered-file file-with-path & rest]
(let [flags (into #{} rest)
new-dimensions (dimensions buffered-file)
file-name (if (contains? flags :verbatim)
file-with-path
(fs/new-filename file-with-path new-dimensions))
file-ext (fs/extension file-name)
resized-file (File. file-name)]
(ImageIO/write buffered-file file-ext resized-file)
(.getAbsolutePath resized-file)))
(defn as-stream
"image-format something like jpg, png.."
[^BufferedImage buffered-image ^String image-format]
(let [baos (ByteArrayOutputStream.)]
(ImageIO/write buffered-image image-format baos)
(ByteArrayInputStream. (.toByteArray baos))))
(defn as-stream-by-mime-type
"mime-type something like image/jpeg, image/png.."
[^BufferedImage buffered-image ^String mime-type]
(let [baos (ByteArrayOutputStream.)]
(let [^ImageWriter writer (.next (ImageIO/getImageWritersByMIMEType mime-type))]
(.setOutput writer (ImageIO/createImageOutputStream baos))
(.write writer buffered-image)
(ByteArrayInputStream. (.toByteArray baos)))))