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diff --git a/src/termios_guard.hh b/src/termios_guard.hh
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+/**
+ * Copyright (c) 2007-2012, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * @file termios_guard.hh
+ */
+
+#ifndef termios_guard_hh
+#define termios_guard_hh
+
+#include <stdio.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+/**
+ * RAII class that saves the current termios for a tty and then restores them
+ * during destruction.
+ */
+class guard_termios {
+public:
+    /**
+     * Store the TTY termios settings in this object.
+     *
+     * @param fd The tty file descriptor.
+     */
+    guard_termios(const int fd) : gt_fd(fd)
+    {
+        memset(&this->gt_termios, 0, sizeof(this->gt_termios));
+        if (isatty(this->gt_fd)
+            && tcgetattr(this->gt_fd, &this->gt_termios) == -1) {
+            perror("tcgetattr");
+        }
+    }
+
+    /**
+     * Restore the TTY termios settings that were captured when this object was
+     * instantiated.
+     */
+    ~guard_termios()
+    {
+        if (isatty(this->gt_fd)
+            && tcsetattr(this->gt_fd, TCSANOW, &this->gt_termios) == -1)
+        {
+            perror("tcsetattr");
+        }
+    }
+
+    const struct termios* get_termios() const { return &this->gt_termios; }
+
+private:
+    const int gt_fd;
+    struct termios gt_termios;
+};
+#endif