--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.desktop/share/classes/sun/font/CharToGlyphMapper.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2003, 2006, Oracle and/or its affiliates. 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.font;
+
+/*
+ * NB the versions that take a char as an int are used by the opentype
+ * layout engine. If that remains in native these methods may not be
+ * needed in the Java class.
+ */
+public abstract class CharToGlyphMapper {
+
+    public static final int HI_SURROGATE_START = 0xD800;
+    public static final int HI_SURROGATE_END = 0xDBFF;
+    public static final int LO_SURROGATE_START = 0xDC00;
+    public static final int LO_SURROGATE_END = 0xDFFF;
+
+    public static final int UNINITIALIZED_GLYPH = -1;
+    public static final int INVISIBLE_GLYPH_ID = 0xffff;
+    public static final int INVISIBLE_GLYPHS   = 0xfffe; // and above
+
+    protected int missingGlyph = CharToGlyphMapper.UNINITIALIZED_GLYPH;
+
+    public int getMissingGlyphCode() {
+        return missingGlyph;
+    }
+
+    /* Default implementations of these methods may be overridden by
+     * subclasses which have special requirements or optimisations
+     */
+
+    public boolean canDisplay(char ch) {
+        int glyph = charToGlyph(ch);
+        return glyph != missingGlyph;
+    }
+
+    public boolean canDisplay(int cp) {
+        int glyph = charToGlyph(cp);
+        return glyph != missingGlyph;
+    }
+
+    public int charToGlyph(char unicode) {
+        char[] chars = new char[1];
+        int[] glyphs = new int[1];
+        chars[0] = unicode;
+        charsToGlyphs(1, chars, glyphs);
+        return glyphs[0];
+    }
+
+    public int charToGlyph(int unicode) {
+        int[] chars = new int[1];
+        int [] glyphs = new int[1];
+        chars[0] = unicode;
+        charsToGlyphs(1, chars, glyphs);
+        return glyphs[0];
+    }
+
+    public abstract int getNumGlyphs();
+
+    public abstract void charsToGlyphs(int count,
+                                       char[] unicodes, int[] glyphs);
+
+    public abstract boolean charsToGlyphsNS(int count,
+                                            char[] unicodes, int[] glyphs);
+
+    public abstract void charsToGlyphs(int count,
+                                       int[] unicodes, int[] glyphs);
+
+}