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package main
import (
"flag"
"fmt"
"log"
"os"
"github.com/rwcarlsen/goexif/exif"
"github.com/rwcarlsen/goexif/mknote"
"github.com/rwcarlsen/goexif/tiff"
)
var mnote = flag.Bool("mknote", false, "try to parse makernote data")
var thumb = flag.Bool("thumb", false, "dump thumbail data to stdout (for first listed image file)")
func main() {
flag.Parse()
fnames := flag.Args()
if *mnote {
exif.RegisterParsers(mknote.All...)
}
for _, name := range fnames {
f, err := os.Open(name)
if err != nil {
log.Printf("err on %v: %v", name, err)
continue
}
x, err := exif.Decode(f)
if err != nil {
log.Printf("err on %v: %v", name, err)
continue
}
if *thumb {
data, err := x.JpegThumbnail()
if err != nil {
log.Fatal("no thumbnail present")
}
if _, err := os.Stdout.Write(data); err != nil {
log.Fatal(err)
}
return
}
fmt.Printf("\n---- Image '%v' ----\n", name)
x.Walk(Walker{})
}
}
type Walker struct{}
func (_ Walker) Walk(name exif.FieldName, tag *tiff.Tag) error {
data, _ := tag.MarshalJSON()
fmt.Printf(" %v: %v\n", name, string(data))
return nil
}
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