gvsig-scripting / org.gvsig.scripting / trunk / org.gvsig.scripting / org.gvsig.scripting.lib / org.gvsig.scripting.lib.impl / src / main / java / org / gvsig / scripting / impl / DefaultScriptingScript.java @ 453
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package org.gvsig.scripting.impl; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.List; |
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import java.util.Map; |
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import javax.script.Compilable; |
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import javax.script.CompiledScript; |
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import javax.script.Invocable; |
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import javax.script.ScriptEngine; |
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import javax.script.ScriptException; |
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import org.apache.commons.io.FileUtils; |
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import org.apache.commons.io.FilenameUtils; |
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import org.gvsig.scripting.CompileErrorException; |
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import org.gvsig.scripting.ExecuteErrorException; |
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import org.gvsig.scripting.ScriptingBaseScript; |
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import org.gvsig.scripting.ScriptingFolder; |
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import org.gvsig.scripting.ScriptingManager; |
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import org.gvsig.scripting.ScriptingScript; |
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import org.gvsig.scripting.ScriptingUnit; |
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import org.gvsig.tools.dispose.Disposable; |
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import org.gvsig.tools.observer.Observer; |
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import org.gvsig.tools.observer.impl.DelegateWeakReferencingObservable; |
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import org.gvsig.tools.task.AbstractMonitorableTask; |
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import org.ini4j.Ini; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public class DefaultScriptingScript extends AbstractScript implements |
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ScriptingScript {
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private static final Logger logger = LoggerFactory.getLogger(DefaultScriptingScript.class); |
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protected String langName; |
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protected String extension = null; |
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protected ScriptEngine engine = null; |
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protected CompiledScript compiledCode;
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private String code = null; |
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private String mainName = "main"; |
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private boolean saved; |
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private final DelegateWeakReferencingObservable delegatedObservable; |
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protected DefaultScriptingScript(ScriptingFolder parent, String typename, ScriptingManager manager, String id) { |
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super(parent, typename, manager, id);
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this.setLangName("python"); |
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this.setSaved(true); |
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this.delegatedObservable = new DelegateWeakReferencingObservable(this); |
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} |
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public DefaultScriptingScript(ScriptingFolder parent, ScriptingManager manager, String id) { |
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this(parent, ScriptingManager.UNIT_SCRIPT, manager, id);
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} |
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public ScriptingUnit load(String name) { |
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ScriptingUnit script = null;
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File f = null; |
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String scname = name;
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if (!scname.endsWith(".inf")) { |
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scname = scname + ".inf";
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} |
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if (scname.startsWith("/")) { |
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f = new File(scname.substring(1)); |
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} else {
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f = new File(this.getParent().getFile(), scname); |
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if (!f.exists()) {
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return null; |
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} |
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} |
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try {
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script = this.getManager().getScript(f);
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} catch (ScriptNotFoundException ex) {
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return null; |
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} |
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if (script != null) { |
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this.getEngine().put(script.getId(), script);
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} |
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return script;
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} |
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public Object __getattr__(String name) { |
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ScriptEngine engine = this.getEngine();
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this.compile();
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return engine.get(name);
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} |
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public void __setattr__(String name, Object value) { |
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ScriptEngine engine = this.getEngine();
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this.compile();
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engine.put(name,value); |
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} |
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public Object __call__() { |
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return this.run(); |
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} |
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public Object __call__(Object[] args) { |
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return this.run(args); |
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} |
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protected void notifyErrors(Exception exception, String command) { |
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this.delegatedObservable.notifyObservers(new BaseScriptingNotifycation( |
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this, BaseScriptingNotifycation.RUNTIME_ERROR_NOTIFICATION,
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command, exception)); |
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} |
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public void setSaved(boolean saved) { |
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this.saved = saved;
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} |
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public String getCode() { |
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if (this.code == null) { |
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File f=null; |
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try {
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f = this.getFileResource(this.extension); |
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this.code = FileUtils.readFileToString(f);
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} catch (IOException e) { |
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String fname = (f==null)? "(null)":f.getAbsolutePath(); |
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logger.warn("Can't load code from file '"+fname+"'."); |
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} |
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} |
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return this.code; |
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} |
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public void setCode(String code) { |
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this.code = code;
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this.engine = null; |
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this.compiledCode = null; |
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this.setSaved(false); |
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} |
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private String getPreparedCode() { |
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return this.getCode(); |
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} |
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protected String getCodeToInitializeEngine() { |
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if( "python".equalsIgnoreCase(this.getLangName()) ) { |
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List<File> libFolders = this.manager.getLibFolders(); |
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if (libFolders == null || libFolders.size() < 1) { |
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return null; |
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} |
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StringBuffer buffer = new StringBuffer(); |
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buffer.append("import sys\n");
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for (File file : libFolders) { |
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buffer.append("sys.path.append(r'");
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buffer.append(file.getAbsolutePath()); |
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buffer.append("')\n");
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} |
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buffer.append("load = script.load\n");
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return buffer.toString();
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} |
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return null; |
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} |
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protected ScriptEngine getEngine() {
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if (this.engine == null) { |
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ScriptEngine scriptEngine = this.manager.getEngine(this |
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.getLangName()); |
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scriptEngine.put("script", this); |
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this.engine = scriptEngine;
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try {
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String code = this.getCodeToInitializeEngine(); |
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if( code != null ) { |
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this.engine.eval(code);
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} |
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} catch(Exception ex) { |
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logger.warn("Can't initialize engine with the code:\n"+code);
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} |
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} |
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return this.engine; |
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} |
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protected void loadInf(Ini prefs) { |
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super.loadInf(prefs);
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this.setMainName((String) getInfValue(prefs, "Script", "main", "main")); |
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this.setLangName((String) getInfValue(prefs, "Script", "Lang", |
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this.getLangName()));
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} |
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public void load(ScriptingFolder folder, String id) { |
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this.setId(id);
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this.setParent(folder);
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Map<String, String> languages = this.manager |
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.getSupportedLanguagesByExtension(); |
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String extension = FilenameUtils.getExtension(id);
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String langName = languages.get(extension);
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this.setLangName(langName);
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this.setExtension(extension);
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File f = getFileResource(".inf"); |
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if (f.isFile()) {
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Ini prefs = null;
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try {
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prefs = new Ini(f);
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} catch (Exception e) { |
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logger.warn("Can't load 'inf' file '"+f.getAbsolutePath()+"'.",e); |
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} |
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loadInf(prefs); |
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} |
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this.setSaved(true); |
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} |
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public void save() { |
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File f = getFileResource(".inf"); |
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if (!f.isFile()) {
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try {
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f.createNewFile(); |
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} catch (Exception e) { |
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logger.warn("Can't create 'inf' file '"+f.getAbsolutePath()+"'.",e); |
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} |
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} |
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Ini prefs = null;
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try {
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prefs = new Ini(f);
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} catch (Exception e) { |
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logger.warn("Can't load 'inf' file '"+f.getAbsolutePath()+"'.",e); |
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} |
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save(prefs); |
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// Guardo el codigo en el fichero
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File fcode = null; |
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try {
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fcode = this.getFileResource(this.getExtension()); |
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FileUtils.write(fcode, this.getCode());
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} catch (Exception e) { |
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logger.warn("Can't write code to file '"+fcode.getAbsolutePath()+"'.",e); |
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} |
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this.setSaved(true); |
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} |
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protected void save(Ini prefs) { |
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super.save(prefs);
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prefs.put("Script", "main", this.getMainName()); |
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prefs.put("Script", "Lang", this.getLangName()); |
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try {
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prefs.store(); |
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} catch (IOException e) { |
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String fname = (prefs.getFile()==null)? "(null)" : prefs.getFile().getAbsolutePath(); |
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logger.warn("Can't save inf file ("+fname+").",e); |
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} |
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} |
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public String getLangName() { |
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return this.langName; |
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} |
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protected void setLangName(final String langName) { |
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this.langName = langName;
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this.extension = this.manager.getExtensionByLanguage(this.langName); |
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} |
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public String[] getIconNames() { |
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return new String[] { |
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"scripting_" + this.getLangName().toLowerCase(), |
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"scripting_" + this.getLangName().toLowerCase() + "_open" |
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}; |
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} |
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public String getMainName() { |
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return this.mainName; |
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} |
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public void setMainName(final String mainName) { |
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this.mainName = mainName;
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} |
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public String getExtension() { |
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return this.extension; |
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} |
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public void setExtension(final String extension) { |
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if( !extension.startsWith(".") ) { |
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this.extension = "." + extension; |
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} else {
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this.extension = extension;
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} |
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} |
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public boolean isSaved() { |
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return this.saved; |
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} |
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public void addObserver(final Observer o) { |
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this.delegatedObservable.addObserver(o);
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} |
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public void deleteObserver(final Observer o) { |
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this.delegatedObservable.deleteObserver(o);
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} |
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public void deleteObservers() { |
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this.delegatedObservable.deleteObservers();
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} |
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public void put(final String name, final Object value) { |
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this.getEngine().put(name, value);
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} |
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public void compile() { |
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if (this.compiledCode == null) { |
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ScriptEngine engine = this.getEngine();
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if (engine instanceof Compilable) { |
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try {
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Compilable compilable = (Compilable) engine; |
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this.compiledCode = compilable.compile(this.getPreparedCode()); |
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this.compiledCode.eval();
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} catch (ScriptException e) {
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CompileErrorException ce = new CompileErrorException(e.getMessage(), this.getName(), e.getLineNumber(), e.getColumnNumber(), e); |
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notifyErrors(ce, "compile");
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throw ce;
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} catch (Throwable e) { |
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CompileErrorException ce = new CompileErrorException(e.getMessage(), this.getName(), e); |
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notifyErrors(new Exception(e), "compile"); |
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throw ce;
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} |
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} |
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} |
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} |
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public Object run() { |
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return this.run(null); |
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} |
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public void addDisposable(Disposable disposable){ |
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//pass
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} |
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public Object run(Object args[]) { |
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if (args == null) { |
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args = new Object[] {}; |
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} |
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this.compile();
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return this.invokeFunction(this.getMainName(), args); |
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} |
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public Object invokeFunction(final String name, Object args[]) { |
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if (this.getEngine() instanceof Invocable) { |
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Invocable invocable = (Invocable) this.getEngine();
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this.compile();
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if( args == null ) { |
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args = new Object[] {}; |
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} |
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try {
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return invocable.invokeFunction(name, args);
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} catch (ScriptException e) {
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ExecuteErrorException ee = new ExecuteErrorException(e.getMessage(), this.getName(), e.getLineNumber(), e.getColumnNumber(), e); |
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notifyErrors(ee, "invoke");
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throw ee;
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} catch (Throwable e) { |
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ExecuteErrorException ee = new ExecuteErrorException(e.getMessage(), this.getName(), e); |
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notifyErrors(ee, "invoke");
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throw ee;
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} |
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} else {
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return null; |
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} |
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} |
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public Object invokeMethod(final Object obj, final String name, Object[] args) |
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throws NoSuchMethodException { |
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if (this.getEngine() instanceof Invocable) { |
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Invocable invocable = (Invocable) this.getEngine();
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this.compile();
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if( args == null ) { |
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args = new Object[] {}; |
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} |
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try {
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return invocable.invokeMethod(obj, name, args);
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} catch (ScriptException e) {
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ExecuteErrorException ee = new ExecuteErrorException(e.getMessage(), this.getName(), e.getLineNumber(), e.getColumnNumber(), e); |
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notifyErrors(ee, "invoke");
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throw ee;
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} catch (Throwable e) { |
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ExecuteErrorException ee = new ExecuteErrorException(e.getMessage(), this.getName(), e); |
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notifyErrors(ee, "invoke");
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throw ee;
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} |
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} else {
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return null; |
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} |
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} |
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public File getResource(String filename) { |
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return new File( this.getParent().getFile(), filename); |
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} |
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class ScriptTask extends AbstractMonitorableTask { |
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ScriptingBaseScript script = null;
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Object[] args = null; |
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protected ScriptTask(ScriptingBaseScript script, Object[] args) { |
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super(script.getName(),false); |
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this.args = args;
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this.script = script;
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this.script.put("task",this); |
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this.script.put("taskStatus",this.getTaskStatus()); |
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} |
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public void run() { |
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try {
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console_println("Running script "+ this.script.getName()+"."); |
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script.run(this.args);
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console_println("Script "+ this.script.getName()+ " terminated."); |
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} catch(Throwable e) { |
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console_println("Stript "+ this.script.getName()+ " aborted."); |
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} finally {
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this.taskStatus.terminate();
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try {
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Thread.sleep(3000); |
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} catch (InterruptedException e) { |
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// Ignore
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} |
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this.taskStatus.remove();
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} |
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} |
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public void showTaskStatus() { |
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this.taskStatus.add();
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} |
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} |
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public void runAsTask(Object[] args) { |
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ScriptTask task = new ScriptTask(this, args); |
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task.start(); |
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} |
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public boolean remove() { |
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boolean r = true; |
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File folder = this.getParent().getFile(); |
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File f = null; |
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try {
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f = new File(folder,this.getId()+".inf"); |
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FileUtils.forceDelete(f); |
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} catch (IOException e) { |
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logger.warn("Can't remove inf file '"+f.getAbsolutePath()+"'.",e); |
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r = false;
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} |
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try {
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f = new File(folder,this.getId()+this.getExtension()); |
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FileUtils.forceDelete(f); |
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} catch (IOException e) { |
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logger.warn("Can't remove code file '"+f.getAbsolutePath()+"'.",e); |
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r = false;
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} |
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return r;
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} |
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public void create(ScriptingFolder folder, String id, String language) { |
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this.setParent(folder);
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this.setId(id);
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if( language==null ) { |
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this.setLangName("python"); |
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} else {
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this.setLangName(language);
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} |
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this.setExtension(this.manager.getExtensionByLanguage(getLangName())); |
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File file = new File(folder.getFile(),id +".inf"); |
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try {
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file.createNewFile(); |
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} catch (IOException e) { |
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logger.warn("Can't create file of the dialog in '"+file.getAbsolutePath()+"'.",e); |
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} |
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if( "python".equalsIgnoreCase(this.getLangName()) ) { |
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this.setCode("\nfrom gvsig import *\n\ndef main(*args):\n #Remove this lines and add here your code\n\n print \"hola mundo\"\n pass\n\n"); |
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} |
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this.save();
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} |
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public ScriptingUnit get(String name) { |
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return this.manager.getScript(name); |
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} |
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} |