Initial QSfera import

Server/vendor/github.com/kovidgoyal/imaging/prism/meta/netpbmmeta/netpbmmeta.go

@@ -0,0 +1,28 @@
+package netpbmmeta
+
+import (
+	"fmt"
+	"io"
+	"strings"
+
+	"github.com/kovidgoyal/imaging/netpbm"
+	"github.com/kovidgoyal/imaging/prism/meta"
+	"github.com/kovidgoyal/imaging/prism/meta/tiffmeta"
+)
+
+var _ = fmt.Print
+
+func ExtractMetadata(r io.Reader) (md *meta.Data, err error) {
+	c, fmt, err := netpbm.DecodeConfigAndFormat(r)
+	if err != nil {
+		if strings.Contains(err.Error(), "unsupported netPBM format") {
+			err = nil
+		}
+		return nil, err
+	}
+	md = &meta.Data{
+		Format: fmt, PixelWidth: uint32(c.Width), PixelHeight: uint32(c.Height),
+		BitsPerComponent: tiffmeta.BitsPerComponent(c.ColorModel),
+	}
+	return md, nil
+}