57 lines
834 B
Go
57 lines
834 B
Go
package main
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import (
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"image"
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"image/gif"
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"image/jpeg"
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"image/png"
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"log"
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"os"
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"path"
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"git.sapphic.engineer/noe/esi"
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)
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func main() {
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convPath := os.Args[1]
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outPath := os.Args[2]
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fin, err := os.Open(convPath)
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if err != nil {
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log.Fatalln(err)
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}
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fout, err := os.OpenFile(outPath, os.O_CREATE|os.O_TRUNC|os.O_WRONLY, 0666)
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if err != nil {
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log.Fatalln(err)
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}
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img, _, err := image.Decode(fin)
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if err != nil {
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log.Fatalln(err)
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}
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fin.Close()
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ext := path.Ext(outPath)
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switch ext[1:] {
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case "esi":
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err = esi.Encode(fout, img)
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case "png":
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err = png.Encode(fout, img)
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case "jpg":
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fallthrough
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case "jpeg":
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err = jpeg.Encode(fout, img, nil)
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case "gif":
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err = gif.Encode(fout, img, nil)
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default:
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log.Fatalf("extension %s unknown", ext)
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}
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if err != nil {
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log.Fatalln(err)
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}
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fout.Close()
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}
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