diff --git a/src/zlib_file.cpp b/src/zlib_file.cpp
new file mode 100644
index 0000000..042dafb
--- /dev/null
+++ b/src/zlib_file.cpp
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (C) 2020 YADRO
+
+#include "zlib_file.hpp"
+
+#include "zlib_exception.hpp"
+
+ZlibFile::ZlibFile(const std::string& fileName)
+{
+    fd = gzopen(fileName.c_str(), "w");
+    if (fd == Z_NULL)
+    {
+        throw ZlibException(ZlibException::create, Z_ERRNO, fd, fileName);
+    }
+    this->fileName = fileName;
+}
+
+ZlibFile::~ZlibFile()
+{
+    if (fd != Z_NULL)
+    {
+        gzclose_w(fd);
+    }
+}
+
+void ZlibFile::close()
+{
+    if (fd != Z_NULL)
+    {
+        const int rc = gzclose_w(fd);
+        if (rc != Z_OK)
+        {
+            throw ZlibException(ZlibException::close, rc, fd, fileName);
+        }
+        fd = Z_NULL;
+        fileName.clear();
+    }
+}
+
+void ZlibFile::write(const tm& timeStamp, const std::string& message) const
+{
+    int rc;
+
+    // Write time stamp
+    rc = gzprintf(fd, "[ %02i:%02i:%02i ] ", timeStamp.tm_hour,
+                  timeStamp.tm_min, timeStamp.tm_sec);
+    if (rc <= 0)
+    {
+        throw ZlibException(ZlibException::write, rc, fd, fileName);
+    }
+
+    // Write message
+    const size_t len = message.length();
+    if (len)
+    {
+        rc = gzwrite(fd, message.data(), static_cast<unsigned int>(len));
+        if (rc <= 0)
+        {
+            throw ZlibException(ZlibException::write, rc, fd, fileName);
+        }
+    }
+
+    // Write EOL
+    rc = gzputc(fd, '\n');
+    if (rc <= 0)
+    {
+        throw ZlibException(ZlibException::write, rc, fd, fileName);
+    }
+}