1 /* 2 * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package sun.awt; 26 27 import java.io.ByteArrayOutputStream; 28 import java.io.OutputStreamWriter; 29 import java.io.IOException; 30 import java.nio.charset.Charset; 31 import java.nio.charset.CharsetEncoder; 32 import java.nio.charset.StandardCharsets; 33 34 public class FontDescriptor implements Cloneable { 35 36 static { 37 NativeLibLoader.loadLibraries(); 38 initIDs(); 39 } 40 41 String nativeName; 42 public CharsetEncoder encoder; 43 String charsetName; 44 private int[] exclusionRanges; 45 46 public FontDescriptor(String nativeName, CharsetEncoder encoder, 47 int[] exclusionRanges){ 48 49 this.nativeName = nativeName; 50 this.encoder = encoder; 51 this.exclusionRanges = exclusionRanges; 52 this.useUnicode = false; 53 Charset cs = encoder.charset(); 54 // The following looks odd but its the only public way to get the 55 // historical name if one exists and the canonical name otherwise. 56 try { 57 OutputStreamWriter osw = new OutputStreamWriter(new ByteArrayOutputStream(), cs); 58 this.charsetName = osw.getEncoding(); 59 osw.close(); 60 } catch (IOException ioe) { 61 } 62 } 63 64 public String getNativeName() { 65 return nativeName; 66 } 67 68 public CharsetEncoder getFontCharsetEncoder() { 69 return encoder; 70 } 71 72 public String getFontCharsetName() { 73 return charsetName; 74 } 75 76 public int[] getExclusionRanges() { 77 return exclusionRanges; 78 } 79 80 /** 81 * Return true if the character is exclusion character. 82 */ 83 public boolean isExcluded(char ch){ 84 for (int i = 0; i < exclusionRanges.length; ){ 85 86 int lo = (exclusionRanges[i++]); 87 int up = (exclusionRanges[i++]); 88 89 if (ch >= lo && ch <= up){ 90 return true; 91 } 92 } 93 return false; 94 } 95 96 public String toString() { 97 return super.toString() + " [" + nativeName + "|" + encoder + "]"; 98 } 99 100 /** 101 * Initialize JNI field and method IDs 102 */ 103 private static native void initIDs(); 104 105 106 public CharsetEncoder unicodeEncoder; 107 boolean useUnicode; // set to true from native code on Unicode-based systems 108 109 public boolean useUnicode() { 110 if (useUnicode && unicodeEncoder == null) { 111 try { 112 this.unicodeEncoder = isLE? 113 StandardCharsets.UTF_16LE.newEncoder(): 114 StandardCharsets.UTF_16BE.newEncoder(); 115 } catch (IllegalArgumentException x) {} 116 } 117 return useUnicode; 118 } 119 static boolean isLE; 120 static { 121 String enc = java.security.AccessController.doPrivileged( 122 new sun.security.action.GetPropertyAction("sun.io.unicode.encoding", 123 "UnicodeBig")); 124 isLE = !"UnicodeBig".equals(enc); 125 } 126 }