Restarted some stuff so I can do it better.

Made a reader that can reade across data blocks if necessary
Still can't get things to read right

old/bytereadwrite.go

@@ -0,0 +1,48 @@
+package squashfs
+
+import "io"
+
+type byteWriterReader struct {
+	byts   []byte
+	offset int
+}
+
+func newByteReadWrite(length int) *byteWriterReader {
+	return &byteWriterReader{
+		byts:   make([]byte, length),
+		offset: 0,
+	}
+}
+
+func newByteReadWriteFromBytes(byts []byte) *byteWriterReader {
+	return &byteWriterReader{
+		byts:   byts,
+		offset: 0,
+	}
+}
+
+func (bwr *byteWriterReader) getBytes() []byte {
+	return bwr.byts
+}
+
+//Read reads the bytes.
+func (bwr *byteWriterReader) Read(byt []byte) (int, error) {
+	if len(bwr.byts) < bwr.offset+len(byt) {
+		bytesWritten := len(bwr.byts) - bwr.offset
+		for i := 0; i < bytesWritten; i++ {
+			byt[i] = bwr.byts[i+bwr.offset]
+		}
+		return bytesWritten, io.EOF
+	}
+	for i := 0; i < len(byt); i++ {
+		byt[i] = bwr.byts[bwr.offset+i]
+	}
+	bwr.offset += len(byt)
+	return len(byt), nil
+}
+
+//Write writes to the bytes. WILL expand to accept the incoming bytes.
+func (bwr *byteWriterReader) Write(byts []byte) (int, error) {
+	bwr.byts = append(bwr.byts, byts...)
+	return len(byts), nil
+}