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diff --git a/string-utils.h b/string-utils.h
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+/*
+ * nvidia-installer: A tool for installing NVIDIA software packages on
+ * Unix and Linux systems.
+ *
+ * Copyright (C) 2003-2009 NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the:
+ *
+ *      Free Software Foundation, Inc.
+ *      59 Temple Place - Suite 330
+ *      Boston, MA 02111-1307, USA
+ *
+ *
+ * string-utils.h
+ */
+
+#ifndef __STRING_UTILS_H__
+#define __STRING_UTILS_H__
+
+/*
+ * NV_STRCAT() - takes a dynamically allocated string followed by a
+ * NULL-terminated list of arbitrary strings and concatenates the
+ * strings with nvstrcat(); the newly allocated string replaces the
+ * original one, which is freed.
+ */
+#define NV_STRCAT(str, args...)              \
+do {                                         \
+    char *__tmp_str = (str);                 \
+    (str) = nvstrcat(__tmp_str, ##args);     \
+    nvfree(__tmp_str);                       \
+} while (0)
+
+char *nvstrdup(const char *s);
+char *nvstrtolower(char *s);
+char *nvstrcat(const char *str, ...);
+
+#endif /* __STRING_UTILS_H__ */