1 /*
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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
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8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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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
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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 {
NativeLibLoader.loadLibraries()37         NativeLibLoader.loadLibraries();
initIDs()38         initIDs();
39     }
40 
41     String nativeName;
42     public CharsetEncoder encoder;
43     String charsetName;
44     private int[] exclusionRanges;
45 
FontDescriptor(String nativeName, CharsetEncoder encoder, int[] exclusionRanges)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 
getNativeName()64     public String getNativeName() {
65         return nativeName;
66     }
67 
getFontCharsetEncoder()68     public CharsetEncoder getFontCharsetEncoder() {
69         return encoder;
70     }
71 
getFontCharsetName()72     public String getFontCharsetName() {
73         return charsetName;
74     }
75 
getExclusionRanges()76     public int[] getExclusionRanges() {
77         return exclusionRanges;
78     }
79 
80     /**
81      * Return true if the character is exclusion character.
82      */
isExcluded(char ch)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 
toString()96     public String toString() {
97         return super.toString() + " [" + nativeName + "|" + encoder + "]";
98     }
99 
100     /**
101      * Initialize JNI field and method IDs
102      */
initIDs()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 
useUnicode()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         @SuppressWarnings("removal")
122         String enc = java.security.AccessController.doPrivileged(
123            new sun.security.action.GetPropertyAction("sun.io.unicode.encoding",
124                                                           "UnicodeBig"));
125         isLE = !"UnicodeBig".equals(enc);
126     }
127 }
128