1 files changed, 24 insertions, 1 deletions
diff --git a/fileutil.go b/fileutil.go
index 80ad02e..2224d7d 100644
--- a/fileutil.go
+++ b/fileutil.go
@@ -1,6 +1,9 @@
 package main
 
-import "os"
+import (
+	"fmt"
+	"os"
+)
 
 func exists(filename string) bool {
 	f, err := os.Open(filename)
@@ -10,3 +13,23 @@ func exists(filename string) bool {
 	f.Close()
 	return true
 }
+
+func readFile(filename string) ([]byte, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+	fi, err := f.Stat()
+	if err != nil {
+		return nil, err
+	}
+	buf := make([]byte, fi.Size())
+	n, err := f.Read(buf)
+	if err != nil {
+		return nil, err
+	}
+	if n != len(buf) {
+		return nil, fmt.Errorf("Unexpected file size: %d vs %d", n, len(buf))
+	}
+	return buf, nil
+}