1 files changed, 57 insertions, 0 deletions
diff --git a/demo/dem/parse.go b/demo/dem/parse.go
new file mode 100644
index 0000000..203a711
--- /dev/null
+++ b/demo/dem/parse.go
@@ -0,0 +1,57 @@
+package dem
+
+import (
+	"errors"
+
+	"github.com/osm/quake/common/buffer"
+	"github.com/osm/quake/common/context"
+)
+
+var ErrUnknownType = errors.New("unknown type")
+
+type Demo struct {
+	CDTrack []byte
+	Data    []*Data
+}
+
+func (dem *Demo) Bytes() []byte {
+	buf := buffer.New()
+
+	buf.PutBytes(dem.CDTrack)
+
+	for _, d := range dem.Data {
+		buf.PutBytes(d.Bytes())
+	}
+
+	return buf.Bytes()
+}
+
+func Parse(ctx *context.Context, data []byte) (*Demo, error) {
+	var demo Demo
+
+	buf := buffer.New(buffer.WithData(data))
+	ctx.SetIsDem(true)
+
+	for buf.Off() < buf.Len() {
+		b, err := buf.ReadByte()
+		if err != nil {
+			return nil, err
+		}
+
+		demo.CDTrack = append(demo.CDTrack, b)
+		if b == '\n' {
+			break
+		}
+	}
+
+	for buf.Off() < buf.Len() {
+		d, err := parseData(ctx, buf)
+		if err != nil {
+			return nil, err
+		}
+
+		demo.Data = append(demo.Data, d)
+	}
+
+	return &demo, nil
+}