1 files changed, 53 insertions, 0 deletions
diff --git a/vendor/codeberg.org/superseriousbusiness/exif-terminator/exif.go b/vendor/codeberg.org/superseriousbusiness/exif-terminator/exif.go
new file mode 100644
index 000000000..02dacc654
--- /dev/null
+++ b/vendor/codeberg.org/superseriousbusiness/exif-terminator/exif.go
@@ -0,0 +1,53 @@
+/*
+   exif-terminator
+   Copyright (C) 2022 SuperSeriousBusiness admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package terminator
+
+import (
+	"strings"
+
+	exif "github.com/dsoprea/go-exif/v3"
+	exifcommon "github.com/dsoprea/go-exif/v3/common"
+)
+
+type withEXIF interface {
+	Exif() (rootIfd *exif.Ifd, data []byte, err error)
+	SetExif(ib *exif.IfdBuilder) (err error)
+}
+
+func terminateEXIF(data withEXIF) error {
+	ifd, _, err := data.Exif()
+	if err != nil {
+		if strings.Contains(err.Error(), "no exif data") {
+			err = nil
+		}
+		return err
+	}
+
+	ifdb := exif.NewIfdBuilderFromExistingChain(ifd)
+	orientation, _ := ifdb.FindTagWithName("Orientation")
+
+	im, ti := exifcommon.NewIfdMapping(), exif.NewTagIndex()
+	ifdb = exif.NewIfdBuilder(im, ti, ifd.IfdIdentity(), ifd.ByteOrder())
+
+	if orientation != nil {
+		ifdb.Add(orientation)
+	}
+
+	return data.SetExif(ifdb)
+}