From 00b13d2ac171d17f399788805830c27e964d0b8f Mon Sep 17 00:00:00 2001
From: David Schor <davidschor@zigwap.com>
Date: Mon, 10 Aug 2015 01:58:25 -0400
Subject: [PATCH] internal dump routine

---
 cmd/cayley/cayley.go |  6 +++++-
 internal/dump.go     | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 internal/dump.go

diff --git a/cmd/cayley/cayley.go b/cmd/cayley/cayley.go
index 6106de4..4411d53 100644
--- a/cmd/cayley/cayley.go
+++ b/cmd/cayley/cayley.go
@@ -219,7 +219,11 @@ func main() {
 			}
 		}
 
-		// internal.Dump()
+		err = internal.Dump(handle.QuadStore, *dumpFile, *dumpType)
+		if err != nil {
+			break
+		}
+
 		handle.Close()
 
 	case "repl":
diff --git a/internal/dump.go b/internal/dump.go
new file mode 100644
index 0000000..ae5f4ef
--- /dev/null
+++ b/internal/dump.go
@@ -0,0 +1,36 @@
+package internal
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/google/cayley/graph"
+	"github.com/google/cayley/exporter"
+)
+
+// Dump the content of the database into a file based
+// on a few different formats
+func Dump(qs graph.QuadStore, outFile, typ string) error {
+	var f *os.File
+	if outFile == "-" {
+		f = os.Stdout
+	} else {
+		var err error
+		f, err = os.Create(outFile)
+		if err != nil {
+			return fmt.Errorf("could not open file %q: %v", outFile, err)
+		}
+		defer f.Close()
+		fmt.Printf("dumping db to file %q\n", outFile)
+	}
+
+	export := exporter.NewExporter(f, qs)
+	if export.Err() != nil {
+		return export.Err()
+	}
+
+        if outFile != "-" {
+		fmt.Printf("%d entries were written\n", export.Count())
+	}
+	return nil
+}