jdk

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/*
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 * Copyright (c) 2014, 2018, 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 propertiesparser;
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import propertiesparser.parser.MessageFile;
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import propertiesparser.gen.ClassGenerator;
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import java.io.File;
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import java.io.PrintStream;
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import java.util.TreeMap;
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import java.util.Map;
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/** Translates a .properties file into a .java file containing an enum-like Java class
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 *  which defines static factory methods for all resource keys in a given resource file. <P>
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 *
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 *  Usage: java PropertiesParser -compile [path to .properties file] [output folder where .java file will be written]
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 *
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 * @author mcimadamore
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 */
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public class PropertiesParser {
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    public Logger logger;
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    public PropertiesParser(Logger logger) {
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        this.logger = logger;
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    }
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    public static void main(String[] args) {
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        boolean ok = run(args, System.out);
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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 boolean run(String[] args, PrintStream out) {
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        PropertiesParser pp = new PropertiesParser(out::println);
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        return pp.run(args);
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    }
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    public static interface Logger {
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        void info(String msg);
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    }
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    public void info(String msg) {
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        logger.info(msg);
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    }
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    public boolean run(String[] args) {
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        Map<String, String> optionsMap = parseOptions(args);
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        if (optionsMap.isEmpty()) {
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            usage();
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            return false;
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        }
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        try {
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            optionsMap.forEach(this::compilePropertyFile);
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            return true;
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        } catch (RuntimeException ex) {
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            ex.printStackTrace();
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            return false;
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        }
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    }
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    private void compilePropertyFile(String propertyPath, String outPath) {
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        try {
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            File propertyFile = new File(propertyPath);
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            String prefix = propertyFile.getName().split("\\.")[0];
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            MessageFile messageFile = new MessageFile(propertyFile, prefix);
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            new ClassGenerator().generateFactory(messageFile, new File(outPath));
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        } catch (Throwable ex) {
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            throw new RuntimeException(ex);
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        }
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    }
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    private Map<String, String> parseOptions(String args[]) {
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        /* Use TreeMap to guarantee stable forEach iteration */
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        Map<String, String> optionsMap = new TreeMap<>();
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        for ( int i = 0; i < args.length ; i++ ) {
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            if ( "-compile".equals(args[i]) && i+2 < args.length ) {
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                optionsMap.put(args[++i], args[++i]);
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            } else {
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                return new TreeMap<>();
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            }
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        }
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        return optionsMap;
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    }
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    private void usage() {
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        info("usage:");
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        info("    java PropertiesParser {-compile path_to_properties_file path_to_java_output_dir}");
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        info("");
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        info("Example:");
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        info("    java PropertiesParser -compile resources/test.properties resources");
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    }
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}
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