Initial commit

pkg/metadata/jpeg.go

@@ -0,0 +1,40 @@
+package metadata
+
+import (
+	"os"
+
+	"github.com/rwcarlsen/goexif/exif"
+)
+
+// JpegExtractor meta data extractor for the jpeg files
+type JpegExtractor struct {
+}
+
+// NewJpegExtractor returns new JpegExtractor
+func NewJpegExtractor() *JpegExtractor {
+	return &JpegExtractor{}
+}
+
+// Extract returns Metadata from specified jpeg file reading its exif data
+//
+// TODO: Fallback to default extractor on exif reading/parsing error
+func (j *JpegExtractor) Extract(fp string) (Metadata, error) {
+	f, err := os.Open(fp)
+	if err != nil {
+		return Metadata{}, err
+	}
+	x, err := exif.Decode(f)
+	if err != nil {
+		return Metadata{}, err
+	}
+
+	time, err := x.DateTime()
+	if err != nil {
+		return Metadata{}, err
+	}
+	meta := Metadata{
+		Time: time,
+	}
+
+	return meta, nil
+}