de.codesourcery.jasm16.ide.WorkspaceConfig.java Source code

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Here is the source code for de.codesourcery.jasm16.ide.WorkspaceConfig.java

Source

package de.codesourcery.jasm16.ide;

/**
 * Copyright 2012 Tobias Gierke <tobias.gierke@code-sourcery.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.log4j.Logger;

/**
 * Workspace configuration.
 * 
 * @author tobias.gierke@code-sourcery.de
 */
public class WorkspaceConfig {

    private static final Logger LOG = Logger.getLogger(WorkspaceConfig.class);

    public static final String FILE_NAME = ".workspace.properties";

    private static final String KEY_PROJECT = "project.";

    private static final String KEY_SUFFIX_PROJECT_STATE = ".state";
    private static final String KEY_SUFFIX_PROJECT_BASEDIR = ".basedir";

    private final File configFile;
    private final Map<String, String> configProperties = new HashMap<String, String>();

    public WorkspaceConfig(File configFile) throws IOException {
        if (configFile == null) {
            throw new IllegalArgumentException("configFile must not be NULL");
        }
        this.configFile = configFile;
        loadConfig();
    }

    public List<File> getProjectsBaseDirectories() {
        List<File> result = new ArrayList<File>();
        for (String key : configProperties.keySet()) {
            if (key.startsWith(KEY_PROJECT) && key.endsWith(KEY_SUFFIX_PROJECT_BASEDIR)) {
                result.add(new File(configProperties.get(key)));
            }
        }
        return result;
    }

    public void projectAdded(IAssemblyProject project) {
        final String key = KEY_PROJECT + project.getName() + KEY_SUFFIX_PROJECT_BASEDIR;
        configProperties.put(key, project.getConfiguration().getBaseDirectory().getAbsolutePath());
    }

    public void projectDeleted(IAssemblyProject project) {
        final String prefix = KEY_PROJECT + project.getName();
        for (String key : new ArrayList<String>(configProperties.keySet())) {
            if (key.startsWith(prefix)) {
                configProperties.remove(key);
            }
        }
    }

    public void projectOpened(IAssemblyProject project) {
        configProperties.put(createProjectStateKey(project), Boolean.toString(true));
    }

    public void projectClosed(IAssemblyProject project) {
        configProperties.put(createProjectStateKey(project), Boolean.toString(false));
    }

    private static String createProjectStateKey(IAssemblyProject project) {
        return createProjectStateKey(project.getName());
    }

    private static String createProjectStateKey(String projectName) {
        return KEY_PROJECT + projectName + KEY_SUFFIX_PROJECT_STATE;
    }

    public boolean isProjectOpen(String projectName) {
        final String key = createProjectStateKey(projectName);
        String value = configProperties.get(key);
        if (StringUtils.isBlank(value)) {
            value = Boolean.toString(true);
        }
        return Boolean.parseBoolean(value);
    }

    protected void loadConfig() throws IOException {
        boolean success = false;
        if (configFile.exists()) {
            try {
                final Properties props = loadPropertiesFile(configFile);
                for (String key : props.stringPropertyNames()) {
                    configProperties.put(key, props.getProperty(key));
                }
                success = true;
            } catch (IOException e) {
                LOG.error("loadConfiguration(): Failed to load workspace configuration");
            }
        }

        if (!success) {
            configProperties.clear();
            configProperties.putAll(createDefaultConfiguration());
            saveConfiguration();
        }
    }

    protected Properties loadPropertiesFile(File configFIle) throws IOException {
        final Properties props = new Properties();
        final InputStream in = new FileInputStream(configFile);
        try {
            props.load(in);
            return props;
        } finally {
            IOUtils.closeQuietly(in);
        }
    }

    protected Map<String, String> createDefaultConfiguration() throws IOException {

        final Map<String, String> result = new HashMap<String, String>();
        return result;
    }

    public void saveConfiguration() throws IOException {

        final Properties props = new Properties();
        for (Map.Entry<String, String> keyValue : configProperties.entrySet()) {
            props.put(keyValue.getKey(), keyValue.getValue());
        }

        final String comments = "jASM16 workspace configuration -- automatically generated, do NOT edit";
        try {
            final FileOutputStream out = new FileOutputStream(configFile);
            try {
                props.store(out, comments);
            } finally {
                IOUtils.closeQuietly(out);
            }
        } catch (IOException e) {
            LOG.fatal(
                    "createDefaultConfiguration(): Failed to save configuration to " + configFile.getAbsolutePath(),
                    e);
            throw e;
        }
    }

}