mirror of
https://github.com/superseriousbusiness/gotosocial
synced 2024-12-23 23:11:53 +01:00
54 lines
1.5 KiB
Go
54 lines
1.5 KiB
Go
|
/*
|
||
|
|
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)
|
||
|
|
}
|