snapshot of https://github.com/cortezaproject/corteza.git (2024.9.x, 2026-09-18; blobs > 131072B omitted)

server/vendor/github.com/edwvee/exiffix/LICENSE

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+MIT License
+
+Copyright (c) 2021 edwvee
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

server/vendor/github.com/edwvee/exiffix/README.md

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+Exiffix
+======
+Exiffix is a one function golang library made to be a replacement for image.Decode to handle orientation stored in EXIF data.
+
+```exiffix.Decode``` has mostly the same signature as ```image.Decode```. The difference is that it requires ```io.ReadSeeker``` instead of ```io.Seeker```.
+
+Example
+======
+```go
+file, err := os.Open(path)
+if err != nil{
+  panic(err)
+}
+defer file.Close()
+img, fmt, err := exiffix.Decode(file)
+```
+
+Special thanks to Macilias: part of code is taken from his [repo](https://github.com/Macilias/go-images-orientation)

server/vendor/github.com/edwvee/exiffix/decode.go

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+package exiffix
+
+import (
+	"image"
+	"io"
+
+	"github.com/disintegration/imaging"
+	"github.com/rwcarlsen/goexif/exif"
+)
+
+//Decode is image.Decode handling orientation in EXIF tags if exists.
+//Requires io.ReadSeeker instead of io.Reader.
+func Decode(reader io.ReadSeeker) (image.Image, string, error) {
+	img, fmt, err := image.Decode(reader)
+	if err != nil {
+		return img, fmt, err
+	}
+	reader.Seek(0, io.SeekStart)
+	orientation := getOrientation(reader)
+	switch orientation {
+	case "1":
+	case "2":
+		img = imaging.FlipH(img)
+	case "3":
+		img = imaging.Rotate180(img)
+	case "4":
+		img = imaging.Rotate180(imaging.FlipH(img))
+	case "5":
+		img = imaging.Rotate270(imaging.FlipV(img))
+	case "6":
+		img = imaging.Rotate270(img)
+	case "7":
+		img = imaging.Rotate90(imaging.FlipV(img))
+	case "8":
+		img = imaging.Rotate90(img)
+	}
+
+	return img, fmt, err
+}
+
+func getOrientation(reader io.Reader) string {
+	x, err := exif.Decode(reader)
+	if err != nil {
+		return "1"
+	}
+	if x != nil {
+		orient, err := x.Get(exif.Orientation)
+		if err != nil {
+			return "1"
+		}
+		if orient != nil {
+			return orient.String()
+		}
+	}
+
+	return "1"
+}