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exif.go
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exif.go
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// Package filesystem - Content managed by Project Forge, see [projectforge.md] for details.
package filesystem
import (
"strings"
"github.com/dsoprea/go-exif/v3"
"github.com/pkg/errors"
"github.com/samber/lo"
"admini.dev/admini/app/util"
)
func ExifExtract(b []byte) (util.ValueMap, error) {
x, err := exif.SearchAndExtractExif(b)
if err != nil {
return nil, errors.Wrapf(err, "unable to extract exif data")
}
entries, _, err := exif.GetFlatExifDataUniversalSearch(x, nil, true)
if err != nil {
return nil, errors.Wrapf(err, "unable to extract exif data")
}
ret := lo.SliceToMap(entries, func(t exif.ExifTag) (string, any) {
return t.TagName, strings.TrimSuffix(strings.TrimPrefix(t.Formatted, "["), "]")
})
return ret, nil
}
func ImageType(path ...string) string {
if len(path) == 0 {
return ""
}
ext := path[len(path)-1]
if !strings.Contains(ext, ".") {
return ""
}
t := ext[strings.LastIndex(ext, ".")+1:]
switch t {
case "bmp", "gif", "jpg", "jpeg", "png":
return t
default:
return ""
}
}