--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/utilities/utf8.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,76 @@
+/*
+ * Copyright 1997-2003 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Low-level interface for UTF8 strings
+
+class UTF8 : AllStatic {
+ public:
+  // returns the unicode length of a 0-terminated uft8 string
+  static int unicode_length(const char* uft8_str);
+
+  // returns the unicode length of a non-0-terminated uft8 string
+  static int unicode_length(const char* uft8_str, int len);
+
+  // converts a uft8 string to a unicode string
+  static void convert_to_unicode(const char* utf8_str, jchar* unicode_buffer, int unicode_length);
+
+  // decodes the current utf8 character, stores the result in value,
+  // and returns the end of the current uft8 chararacter.
+  static char* next(const char* str, jchar* value);
+
+  // decodes the current utf8 character, gets the supplementary character instead of
+  // the surrogate pair when seeing a supplementary character in string,
+  // stores the result in value, and returns the end of the current uft8 chararacter.
+  static char* next_character(const char* str, jint* value);
+
+  // Utility methods
+  static jbyte* strrchr(jbyte* base, int length, jbyte c);
+  static bool   equal(jbyte* base1, int length1, jbyte* base2, int length2);
+  static bool   is_supplementary_character(const unsigned char* str);
+  static jint   get_supplementary_character(const unsigned char* str);
+};
+
+
+// Low-level interface for UNICODE strings
+
+// A unicode string represents a string in the UTF-16 format in which supplementary
+// characters are represented by surrogate pairs. Index values refer to char code
+// units, so a supplementary character uses two positions in a unicode string.
+
+class UNICODE : AllStatic {
+ public:
+  // returns the utf8 size of a unicode character
+  static int utf8_size(jchar c);
+
+  // returns the utf8 length of a unicode string
+  static int utf8_length(jchar* base, int length);
+
+  // converts a unicode string to utf8 string
+  static void convert_to_utf8(const jchar* base, int length, char* utf8_buffer);
+
+  // converts a unicode string to a utf8 string; result is allocated
+  // in resource area unless a buffer is provided.
+  static char* as_utf8(jchar* base, int length);
+  static char* as_utf8(jchar* base, int length, char* buf, int buflen);
+};