399 lines
14 KiB
Java
399 lines
14 KiB
Java
/*
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* Copyright (c) 2002, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compileproperties;
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import java.io.BufferedReader;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import java.io.Writer;
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import java.nio.charset.StandardCharsets;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.text.MessageFormat;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Properties;
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/** Translates a .properties file into a .java file containing the
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* definition of a java.util.Properties subclass which can then be
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* compiled with javac. <P>
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*
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* Usage: java CompileProperties [path to .properties file] [path to .java file to be output] [super class]
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*
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* Infers the package by looking at the common suffix of the two
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* inputs, eliminating "classes" from it.
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*
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* @author Scott Violet
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* @author Kenneth Russell
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*/
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public class CompileProperties {
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public static void main(String[] args) {
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CompileProperties cp = new CompileProperties();
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boolean ok = cp.run(args);
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if ( !ok ) {
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System.exit(1);
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}
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}
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public static interface Log {
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void info(String msg);
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void verbose(String msg);
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void error(String msg, Exception e);
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}
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private String propfiles[];
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private String outfiles[] ;
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private String supers[] ;
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private int compileCount = 0;
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private boolean quiet = false;
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public Log log;
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public void setLog(Log log) {
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this.log = log;
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}
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public boolean run(String[] args) {
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if (log == null) {
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log = new Log() {
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public void error(String msg, Exception e) {
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System.err.println("ERROR: CompileProperties: " + msg);
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if ( e != null ) {
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System.err.println("EXCEPTION: " + e.toString());
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e.printStackTrace();
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}
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}
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public void info(String msg) {
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System.out.println(msg);
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}
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public void verbose(String msg) {
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if (!quiet)
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System.out.println(msg);
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}
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};
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}
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boolean ok = true;
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ok = parseOptions(args);
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if ( ok && compileCount == 0 ) {
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log.error("options parsed but no files to compile", null);
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ok = false;
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}
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/* Need at least one file. */
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if ( !ok ) {
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usage(log);
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} else {
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/* Process files */
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for ( int i = 0; i < compileCount && ok ; i++ ) {
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ok = createFile(propfiles[i], outfiles[i], supers[i]);
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}
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}
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return ok;
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}
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private boolean parseOptions(String args[]) {
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boolean ok = true;
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if ( compileCount > 0 ) {
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String new_propfiles[] = new String[compileCount + args.length];
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String new_outfiles[] = new String[compileCount + args.length];
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String new_supers[] = new String[compileCount + args.length];
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System.arraycopy(propfiles, 0, new_propfiles, 0, compileCount);
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System.arraycopy(outfiles, 0, new_outfiles, 0, compileCount);
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System.arraycopy(supers, 0, new_supers, 0, compileCount);
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propfiles = new_propfiles;
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outfiles = new_outfiles;
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supers = new_supers;
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} else {
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propfiles = new String[args.length];
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outfiles = new String[args.length];
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supers = new String[args.length];
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}
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for ( int i = 0; i < args.length ; i++ ) {
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if ( "-compile".equals(args[i]) && i+3 < args.length ) {
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propfiles[compileCount] = args[++i];
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outfiles[compileCount] = args[++i];
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supers[compileCount] = args[++i];
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compileCount++;
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} else if ( args[i].startsWith("@") && args[i].length() > 1 ) {
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String filename = args[i].substring(1);
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FileInputStream finput = null;
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byte contents[] = null;
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try {
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finput = new FileInputStream(filename);
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int byteCount = finput.available();
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if ( byteCount <= 0 ) {
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log.error("The @-file file is empty", null);
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ok = false;
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} else {
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contents = new byte[byteCount];
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int bytesRead = finput.read(contents);
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if ( byteCount != bytesRead ) {
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log.error("Cannot read all of @-file file", null);
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ok = false;
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}
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}
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} catch ( IOException e ) {
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log.error("cannot open " + filename, e);
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ok = false;
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}
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if ( finput != null ) {
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try {
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finput.close();
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} catch ( IOException e ) {
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ok = false;
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log.error("cannot close " + filename, e);
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}
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}
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ok = true;
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if ( contents != null ) {
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String tokens[] = (new String(contents)).split("\\s+");
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if ( tokens.length > 0 ) {
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ok = parseOptions(tokens);
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}
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}
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if ( !ok ) {
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break;
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}
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} else if ( "-quiet".equals(args[i]) ) {
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quiet = true;
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} else {
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log.error("argument error", null);
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ok = false;
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}
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}
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return ok;
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}
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private boolean createFile(String propertiesPath, String outputPath,
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String superClass) {
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boolean ok = true;
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log.verbose("parsing: " + propertiesPath);
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Properties p = new Properties();
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try (BufferedReader input = Files.newBufferedReader(Path.of(propertiesPath))) {
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p.load(input);
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} catch ( FileNotFoundException e ) {
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ok = false;
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log.error("Cannot find file " + propertiesPath, e);
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} catch ( IOException e ) {
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ok = false;
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log.error("IO error on file " + propertiesPath, e);
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}
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if ( ok ) {
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String packageName = inferPackageName(propertiesPath, outputPath);
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log.verbose("inferred package name: " + packageName);
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List<String> sortedKeys = new ArrayList<String>();
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for ( Object key : p.keySet() ) {
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sortedKeys.add((String)key);
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}
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Collections.sort(sortedKeys);
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Iterator<String> keys = sortedKeys.iterator();
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StringBuffer data = new StringBuffer();
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while (keys.hasNext()) {
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String key = keys.next();
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data.append(" { \"" + escape(key) + "\", \"" +
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escape((String)p.get(key)) + "\" },\n");
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}
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// Get class name from java filename, not the properties filename.
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// (zh_TW properties might be used to create zh_HK files)
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File file = new File(outputPath);
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String name = file.getName();
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int dotIndex = name.lastIndexOf('.');
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String className;
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if (dotIndex == -1) {
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className = name;
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} else {
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className = name.substring(0, dotIndex);
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}
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String packageString = "";
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if (packageName != null && !packageName.equals("")) {
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packageString = "package " + packageName + ";\n\n";
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}
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Writer writer = null;
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try {
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writer = new BufferedWriter(
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new OutputStreamWriter(new FileOutputStream(outputPath), StandardCharsets.US_ASCII));
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MessageFormat format = new MessageFormat(FORMAT);
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writer.write(format.format(new Object[] { packageString, className, superClass, data }));
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} catch ( IOException e ) {
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ok = false;
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log.error("IO error writing to file " + outputPath, e);
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}
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if ( writer != null ) {
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try {
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writer.flush();
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} catch ( IOException e ) {
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ok = false;
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log.error("IO error flush " + outputPath, e);
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}
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try {
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writer.close();
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} catch ( IOException e ) {
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ok = false;
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log.error("IO error close " + outputPath, e);
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}
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}
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log.verbose("wrote: " + outputPath);
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}
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return ok;
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}
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private static void usage(Log log) {
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log.info("usage:");
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log.info(" java CompileProperties {-compile path_to_properties_file path_to_java_output_file super_class} -or- @optionsfile");
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log.info("");
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log.info("Example:");
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log.info(" java CompileProperties -compile test.properties test.java java.util.ListResourceBundle");
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log.info(" java CompileProperties @optionsfile");
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log.info("optionsfile contains: -compile test.properties test.java java.util.ListResourceBundle");
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}
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private static String escape(String theString) {
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// This is taken from Properties.saveConvert with changes for Java strings
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int len = theString.length();
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StringBuffer outBuffer = new StringBuffer(len*2);
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for(int x=0; x<len; x++) {
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char aChar = theString.charAt(x);
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switch(aChar) {
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case '\\':outBuffer.append('\\'); outBuffer.append('\\');
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break;
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case '\t':outBuffer.append('\\'); outBuffer.append('t');
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break;
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case '\n':outBuffer.append('\\'); outBuffer.append('n');
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break;
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case '\r':outBuffer.append('\\'); outBuffer.append('r');
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break;
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case '\f':outBuffer.append('\\'); outBuffer.append('f');
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break;
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default:
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if ((aChar < 0x0020) || (aChar > 0x007e)) {
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outBuffer.append('\\');
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outBuffer.append('u');
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outBuffer.append(toHex((aChar >> 12) & 0xF));
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outBuffer.append(toHex((aChar >> 8) & 0xF));
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outBuffer.append(toHex((aChar >> 4) & 0xF));
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outBuffer.append(toHex( aChar & 0xF));
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} else {
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if (specialSaveChars.indexOf(aChar) != -1) {
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outBuffer.append('\\');
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}
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outBuffer.append(aChar);
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}
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}
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}
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return outBuffer.toString();
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}
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private static String inferPackageName(String inputPath, String outputPath) {
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// Normalize file names
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inputPath = new File(inputPath).getPath();
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outputPath = new File(outputPath).getPath();
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// Split into components
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String sep;
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if (File.separatorChar == '\\') {
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sep = "\\\\";
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} else {
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sep = File.separator;
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}
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String[] inputs = inputPath.split(sep);
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String[] outputs = outputPath.split(sep);
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// Match common names, eliminating first "classes" entry from
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// each if present
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int inStart = 0;
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int inEnd = inputs.length - 2;
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int outEnd = outputs.length - 2;
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int i = inEnd;
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int j = outEnd;
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while (i >= 0 && j >= 0) {
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// If a dir contains a dot, it's not a valid package and most likely
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// a module name.
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if (!inputs[i].equals(outputs[j]) ||
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(inputs[i].equals("gensrc") && outputs[j].equals("gensrc")) ||
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(inputs[i].contains("."))) {
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++i;
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++j;
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break;
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}
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--i;
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--j;
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}
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String result;
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if (i < 0 || j < 0 || i >= inEnd || j >= outEnd) {
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result = "";
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} else {
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inStart = i;
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StringBuffer buf = new StringBuffer();
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for (i = inStart; i <= inEnd; i++) {
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buf.append(inputs[i]);
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if (i < inEnd) {
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buf.append('.');
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}
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}
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result = buf.toString();
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}
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return result;
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}
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private static final String FORMAT =
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"{0}" +
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"public final class {1} extends {2} '{'\n" +
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" protected final Object[][] getContents() '{'\n" +
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" return new Object[][] '{'\n" +
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"{3}" +
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" };\n" +
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" }\n" +
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"}\n";
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// This comes from Properties
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private static char toHex(int nibble) {
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return hexDigit[(nibble & 0xF)];
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}
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// This comes from Properties
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private static final char[] hexDigit = {
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'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'
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};
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// Note: different from that in Properties
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private static final String specialSaveChars = "\"";
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}
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