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16 package org.apache.cocoon.components.serializers.encoding;
17
18 import java.io.BufferedOutputStream  ;
19 import java.io.File ;
20 import java.io.FileOutputStream ;
21 import java.io.IOException ;
22 import java.io.OutputStream ;
23 import java.io.PrintStream ;
24 import java.nio.charset.Charset ;
25 import java.nio.charset.CharsetEncoder ;
26 import java.util.Iterator ;
27 import java.util.Collection ;
28
29
35 public class Compiler extends CompiledCharset {
36
37
38 private String clazz = null;
39
40
41 private CharsetEncoder encoder = null;
42
43
44 private Compiler(String name, String aliases[], CharsetEncoder encoder) {
45 super(name, aliases);
46 this.clazz = "cs_" + name.replace('-', '_').toUpperCase();
47 this.encoder = encoder;
48 this.compile();
49 }
50
51
59 protected boolean compile(char c) {
60 return(this.encoder.canEncode((char)c));
61 }
62
63
66 public void save()
67 throws IOException {
68 this.save(new File (System.getProperty("user.dir")));
69 }
70
73 public void save(File directory)
74 throws IOException {
75 File file = new File (directory, this.clazz + ".java");
76 OutputStream out = new FileOutputStream (file);
77 this.save(out);
78 out.flush();
79 out.close();
80 }
81
82
86 public void save(OutputStream stream)
87 throws IOException {
88 PrintStream out = new PrintStream (new BufferedOutputStream (stream));
89
90 out.println("/*");
91 out.println(" * Copyright 1999-2004 The Apache Software Foundation.");
92 out.println(" *");
93 out.println(" * Licensed under the Apache License, Version 2.0 (the \"License\");");
94 out.println(" * you may not use this file except in compliance with the License.");
95 out.println(" * You may obtain a copy of the License at");
96 out.println(" *");
97 out.println(" * http://www.apache.org/licenses/LICENSE-2.0");
98 out.println(" *");
99 out.println(" * Unless required by applicable law or agreed to in writing, software");
100 out.println(" * distributed under the License is distributed on an \"AS IS\" BASIS,");
101 out.println(" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.");
102 out.println(" * See the License for the specific language governing permissions and");
103 out.println(" * limitations under the License.");
104 out.println(" */");
105 out.println("/* Generated by " + this.getClass().getName() + " */");
106 out.println();
107 out.println("package org.apache.cocoon.components.serializers.encoding;");
108 out.println();
109 out.println("/**");
110 out.println(" * The <b>" + this.getName() + "</b> character set encoding representation.");
111 out.println(" *");
112 out.println(" * @author Generated by <code>" + this.getClass().getName() + "</code>");
113 out.println(" */");
114 out.println("class " + this.clazz + " extends CompiledCharset {");
115 out.println();
116 out.println(" /** The name of this charset (<b>" + this.getName() + "</b>). */");
117 out.println(" public static final String CS_NAME = \"" + this.getName() + "\";");
118 out.println();
119 out.println(" /** The array of alias names of this charset. */");
120 out.println(" public static final String CS_ALIASES[] = {");
121 String aliases[] = this.getAliases();
122 for (int x = 0; x < aliases.length; x++) out.println(" \"" + aliases[x] + "\",");
123 out.println(" };");
124 out.println();
125 out.println(" /** The array all characters encoded by this encoding. */");
126 out.print(" public static final byte CS_ENCODING[] = {");
127 for (int x = 0; x < this.encoding.length; x++) {
128 if ((x & 0x0F) == 0) {
129 out.println();
130 out.print(" ");
131 }
132 String value = Integer.toString(this.encoding[x]);
133 value = " ".substring(value.length()) + value;
134 out.print(value);
135 if ((x + 1) != this.encoding.length) out.print(",");
136 }
137 out.println();
138 out.println(" };");
139 out.println();
140 out.println(" /**");
141 out.println(" * Create a new instance of the <b>" + this.getName() + "</b> caracter");
142 out.println(" * encoding as a <code>Charset</code>.");
143 out.println(" */");
144 out.println(" public " + this.clazz + "() {");
145 out.println(" super(CS_NAME, CS_ALIASES, CS_ENCODING);");
146 out.println(" }");
147 out.println();
148 out.println(" /**");
149 out.println(" * Operation not supported.");
150 out.println(" */");
151 out.println(" public boolean compile(char c) {");
152 out.println(" throw new UnsupportedOperationException();");
153 out.println(" }");
154 out.println();
155 out.println("}");
156 out.flush();
157 }
158
159
162 public static Compiler process(Charset charset)
163 throws IOException {
164 CharsetEncoder encoder = charset.newEncoder();
165 String name = charset.displayName();
166
167 String aliases[] = new String [charset.aliases().size()];
168 Iterator iterator = charset.aliases().iterator();
169 for (int k = 0; k < aliases.length; k++) {
170 aliases[k] = iterator.next().toString();
171 }
172
173 return(new Compiler (name, aliases, encoder));
174 }
175
176
180 public static void main(String args[])
181 throws IOException {
182 File directory = new File (System.getProperty("user.dir"));
183 if (args.length > 0) directory=new File (args[0]);
184 if (!directory.isDirectory()) {
185 throw new IOException ("Invalid output directory \""
186 + directory.getName() + "\"");
187 }
188 Collection charsets = Charset.availableCharsets().values();
189 Iterator iterator = charsets.iterator();
190 int pos = 0;
191 int len = charsets.size();
192
193 while (iterator.hasNext()) {
194 Charset charset = (Charset)iterator.next();
195 Compiler compiler = process(charset);
196 compiler.save(directory);
197 System.out.println("Generating \"" + compiler.clazz + ".java\" "
198 + "for \"" + compiler.getName() + "\" charset ("
199 + (++pos) + " of " + len + ")");
200 }
201 }
202 }
203 |
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