format: idxfile, support for >2Gb packfiles

2 files changed, 17 insertions, 1 deletions

diff --git a/utils/binary/read.go b/utils/binary/read.go
index c256ffe..50da1ff 100644
--- a/utils/binary/read.go
+++ b/utils/binary/read.go
@@ -94,7 +94,17 @@ const (
 	lengthBits   = uint8(7)   // subsequent bytes has 7 bits to store the length
 )
 
-// ReadUint32 reads 4 bytes and returns them as a Big ndian uint32
+// ReadUint64 reads 8 bytes and returns them as a BigEndian uint32
+func ReadUint64(r io.Reader) (uint64, error) {
+	var v uint64
+	if err := binary.Read(r, binary.BigEndian, &v); err != nil {
+		return 0, err
+	}
+
+	return v, nil
+}
+
+// ReadUint32 reads 4 bytes and returns them as a BigEndian uint32
 func ReadUint32(r io.Reader) (uint32, error) {
 	var v uint32
 	if err := binary.Read(r, binary.BigEndian, &v); err != nil {
diff --git a/utils/binary/write.go b/utils/binary/write.go
index 2ec3581..c08c73a 100644
--- a/utils/binary/write.go
+++ b/utils/binary/write.go
@@ -31,6 +31,12 @@ func WriteVariableWidthInt(w io.Writer, n int64) error {
 	return err
 }
 
+// WriteUint64 writes the binary representation of a uint64 into w, in BigEndian
+// order
+func WriteUint64(w io.Writer, value uint64) error {
+	return binary.Write(w, binary.BigEndian, value)
+}
+
 // WriteUint32 writes the binary representation of a uint32 into w, in BigEndian
 // order
 func WriteUint32(w io.Writer, value uint32) error {