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- /*
- * Copyright (c) 2006-2017 DMDirc Developers
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
- * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
- * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
- * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
- package com.dmdirc.addons.scriptplugin;
-
- import com.dmdirc.commandline.CommandLineOptionsModule.Directory;
-
- import java.io.File;
- import java.util.Arrays;
- import java.util.HashMap;
- import java.util.LinkedList;
- import java.util.List;
- import java.util.Map;
-
- import javax.inject.Inject;
- import javax.script.ScriptEngineManager;
- import javax.script.ScriptException;
-
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
-
- import static com.dmdirc.util.LogUtils.USER_ERROR;
-
- public class ScriptManager {
-
- private static final Logger LOG = LoggerFactory.getLogger(ScriptManager.class);
- /** Script engine manager. */
- private final ScriptEngineManager scriptEngineManager;
- /** Script directory. */
- private final String scriptDirectory;
- /** Store Script State Name,Engine */
- private final Map<String, ScriptEngineWrapper> scripts = new HashMap<>();
-
- @Inject
- public ScriptManager(final ScriptEngineManager scriptEngineManager,
- @Directory(ScriptModule.SCRIPTS) final String scriptDirectory) {
- this.scriptEngineManager = scriptEngineManager;
- this.scriptDirectory = scriptDirectory;
- }
-
- /**
- * Get a clone of the scripts map.
- *
- * @return a clone of the scripts map
- */
- protected Map<String, ScriptEngineWrapper> getScripts() {
- return new HashMap<>(scripts);
- }
-
- /** Reload all scripts */
- public void rehash() {
- scripts.values().forEach(ScriptEngineWrapper::reload);
- // Advise the Garbage collector that now would be a good time to run
- System.gc();
- }
-
- /**
- * Call a function in all scripts.
- *
- * @param functionName Name of function
- * @param args Arguments for function
- */
- public void callFunctionAll(final String functionName, final Object... args) {
- for (final ScriptEngineWrapper engine : scripts.values()) {
- engine.callFunction(functionName, args);
- }
- }
-
- /**
- * Load a script file into a new jsEngine
- *
- * @param scriptFilename Path to script
- *
- * @return true for Success (or already loaded), false for fail. (Fail occurs if script already
- * exists, or if it has errors)
- */
- public boolean loadScript(final String scriptFilename) {
- if (!scripts.containsKey(scriptFilename)) {
- try {
- final ScriptEngineWrapper wrapper = new ScriptEngineWrapper(scriptEngineManager,
- scriptFilename);
- scripts.put(scriptFilename, wrapper);
- } catch (ScriptException e) {
- LOG.info(USER_ERROR, "Error loading '{}': {}", scriptFilename, e.getMessage(), e);
- return false;
- }
- }
- return true;
- }
-
- /**
- * Unload a script file.
- *
- * @param scriptFilename Path to script
- */
- public void unloadScript(final String scriptFilename) {
- if (scripts.containsKey(scriptFilename)) {
- // Tell it that its about to be unloaded.
- scripts.get(scriptFilename).callFunction("onUnload");
- // Remove the script
- scripts.remove(scriptFilename);
- // Advise the Garbage collector that now would be a good time to run
- System.gc();
- }
- }
-
- /**
- * Retrieves a list of all installed scripts. Any file under the main plugin directory
- * (~/.DMDirc/scripts or similar) that matches *.js is deemed to be a valid script.
- *
- * @return A list of all installed scripts
- */
- public List<String> getPossibleScripts() {
- final List<String> res = new LinkedList<>();
-
- final LinkedList<File> dirs = new LinkedList<>();
- dirs.add(new File(scriptDirectory));
-
- while (!dirs.isEmpty()) {
- final File dir = dirs.pop();
- if (dir.isDirectory()) {
- dirs.addAll(Arrays.asList(dir.listFiles()));
- } else if (dir.isFile() && dir.getName().endsWith(".js")) {
- final String target = dir.getPath();
- res.add(target.substring(scriptDirectory.length(), target.length()));
- }
- }
- return res;
- }
-
- }
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