1 files changed, 28 insertions, 0 deletions
diff --git a/quazip/quaadler32.cpp b/quazip/quaadler32.cpp
new file mode 100644
index 00000000..097899f6
--- /dev/null
+++ b/quazip/quaadler32.cpp
@@ -0,0 +1,28 @@
+#include "quaadler32.h"
+
+#include "zlib.h"
+
+QuaAdler32::QuaAdler32()
+{
+	reset();
+}
+
+quint32 QuaAdler32::calculate(const QByteArray &data)
+{
+	return adler32( adler32(0L, Z_NULL, 0), (const Bytef*)data.data(), data.size() );
+}
+
+void QuaAdler32::reset()
+{
+	checksum = adler32(0L, Z_NULL, 0);
+}
+
+void QuaAdler32::update(const QByteArray &buf)
+{
+	checksum = adler32( checksum, (const Bytef*)buf.data(), buf.size() );
+}
+
+quint32 QuaAdler32::value()
+{
+	return checksum;
+}