* finish rewrite of ExpressionFormat customizations
This commit is contained in:
Reinhard Pointner
parent
3339dc36d1
commit
1a730c3ec6
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@ -1,13 +1,11 @@
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package net.sourceforge.filebot.format;
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import static net.sourceforge.filebot.util.ExceptionUtilities.*;
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import static net.sourceforge.filebot.util.FileUtilities.*;
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import groovy.lang.GroovyClassLoader;
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import groovy.lang.GroovyRuntimeException;
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import groovy.lang.MissingPropertyException;
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import java.io.InputStreamReader;
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import java.security.AccessController;
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import java.text.FieldPosition;
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import java.text.Format;
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@ -25,25 +23,35 @@ import javax.script.ScriptEngine;
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import javax.script.ScriptException;
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import javax.script.SimpleScriptContext;
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import org.codehaus.groovy.control.CompilerConfiguration;
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import org.codehaus.groovy.control.MultipleCompilationErrorsException;
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import org.codehaus.groovy.jsr223.GroovyScriptEngineFactory;
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import org.codehaus.groovy.control.customizers.ImportCustomizer;
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import org.codehaus.groovy.jsr223.GroovyScriptEngineImpl;
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public class ExpressionFormat extends Format {
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private static ScriptEngine engine;
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private static Map<String, CompiledScript> scriptletCache = new HashMap<String, CompiledScript>();
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protected static ScriptEngine createScriptEngine() {
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CompilerConfiguration config = new CompilerConfiguration();
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// include default functions
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ImportCustomizer imports = new ImportCustomizer();
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imports.addStaticStars(ExpressionFormatFunctions.class.getName());
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config.addCompilationCustomizers(imports);
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GroovyClassLoader classLoader = new GroovyClassLoader(Thread.currentThread().getContextClassLoader(), config);
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return new GroovyScriptEngineImpl(classLoader);
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}
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protected static synchronized ScriptEngine getGroovyScriptEngine() throws ScriptException {
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if (engine == null) {
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engine = new GroovyScriptEngineFactory().getScriptEngine();
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engine.eval(new InputStreamReader(ExpressionFormat.class.getResourceAsStream("ExpressionFormat.lib.groovy")));
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engine = createScriptEngine();
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}
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return engine;
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}
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protected static synchronized CompiledScript compileScriptlet(String expression) throws ScriptException {
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Compilable engine = (Compilable) getGroovyScriptEngine();
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CompiledScript scriptlet = scriptletCache.get(expression);
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@ -53,38 +61,35 @@ public class ExpressionFormat extends Format {
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}
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return scriptlet;
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}
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private final String expression;
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private final Object[] compilation;
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private ScriptException lastException;
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public ExpressionFormat(String expression) throws ScriptException {
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this.expression = expression;
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this.compilation = secure(compile(expression));
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}
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public String getExpression() {
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return expression;
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}
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protected Object[] compile(String expression) throws ScriptException {
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List<Object> compilation = new ArrayList<Object>();
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char open = '{';
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char close = '}';
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StringBuilder token = new StringBuilder();
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int level = 0;
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// parse expressions and literals
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for (int i = 0; i < expression.length(); i++) {
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char c = expression.charAt(i);
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if (c == open) {
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if (level == 0) {
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if (token.length() > 0) {
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@ -94,7 +99,7 @@ public class ExpressionFormat extends Format {
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} else {
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token.append(c);
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}
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level++;
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} else if (c == close) {
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if (level == 1) {
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@ -104,14 +109,14 @@ public class ExpressionFormat extends Format {
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} catch (ScriptException e) {
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// try to extract syntax exception
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ScriptException illegalSyntax = e;
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try {
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String message = findCause(e, MultipleCompilationErrorsException.class).getErrorCollector().getSyntaxError(0).getOriginalMessage();
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illegalSyntax = new ScriptException("SyntaxError: " + message);
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} catch (Exception ignore) {
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// ignore, just use original exception
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}
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throw illegalSyntax;
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} finally {
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token.setLength(0);
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@ -120,65 +125,62 @@ public class ExpressionFormat extends Format {
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} else {
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token.append(c);
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}
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level--;
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} else {
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token.append(c);
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}
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// sanity check
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if (level < 0) {
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throw new ScriptException("SyntaxError: unexpected token: " + close);
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}
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}
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// sanity check
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if (level != 0) {
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throw new ScriptException("SyntaxError: missing token: " + close);
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}
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// append tail
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if (token.length() > 0) {
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compilation.add(token.toString());
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}
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return compilation.toArray();
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}
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public Bindings getBindings(Object value) {
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return new ExpressionBindings(value) {
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@Override
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public Object get(Object key) {
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return normalizeBindingValue(super.get(key));
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}
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};
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}
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@Override
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public StringBuffer format(Object object, StringBuffer sb, FieldPosition pos) {
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return format(getBindings(object), sb);
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}
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public StringBuffer format(Bindings bindings, StringBuffer sb) {
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// use privileged bindings so we are not restricted by the script sandbox
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Bindings priviledgedBindings = PrivilegedInvocation.newProxy(Bindings.class, bindings, AccessController.getContext());
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// initialize script context with the privileged bindings
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ScriptContext context = new SimpleScriptContext();
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context.setBindings(priviledgedBindings, ScriptContext.GLOBAL_SCOPE);
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// reset exception state
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lastException = null;
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for (Object snipped : compilation) {
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if (snipped instanceof CompiledScript) {
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try {
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Object value = normalizeExpressionValue(((CompiledScript) snipped).eval(context));
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if (value != null) {
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sb.append(value);
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}
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@ -189,27 +191,24 @@ public class ExpressionFormat extends Format {
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sb.append(snipped);
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}
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}
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return sb;
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}
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protected Object normalizeBindingValue(Object value) {
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// if the binding value is a String, remove illegal characters
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if (value instanceof CharSequence) {
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return replacePathSeparators(value.toString()).trim();
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}
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// if the binding value is an Object, just leave it
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return value;
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}
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protected Object normalizeExpressionValue(Object value) {
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return value;
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}
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protected void handleException(ScriptException exception) {
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if (findCause(exception, MissingPropertyException.class) != null) {
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lastException = new ExpressionException(new BindingException(findCause(exception, MissingPropertyException.class).getProperty(), "undefined", exception));
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@ -219,29 +218,26 @@ public class ExpressionFormat extends Format {
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lastException = exception;
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}
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}
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public ScriptException caughtScriptException() {
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return lastException;
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}
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private Object[] secure(Object[] compilation) {
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for (int i = 0; i < compilation.length; i++) {
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Object snipped = compilation[i];
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if (snipped instanceof CompiledScript) {
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compilation[i] = new SecureCompiledScript((CompiledScript) snipped);
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}
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}
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return compilation;
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}
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@Override
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public Object parseObject(String source, ParsePosition pos) {
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throw new UnsupportedOperationException();
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}
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}
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@ -0,0 +1,55 @@
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package net.sourceforge.filebot.format;
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import groovy.lang.Closure;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Global functions available in the {@link ExpressionFormat}
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*/
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public class ExpressionFormatFunctions {
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/**
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* General helpers and utilities
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*/
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public static Object c(Closure<?> c) {
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try {
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return c.call();
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} catch (Exception e) {
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return null;
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}
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}
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public static Object any(Closure<?>... closures) {
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for (Closure<?> it : closures) {
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try {
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Object result = it.call();
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if (result != null) {
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return result;
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}
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} catch (Exception e) {
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// ignore
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}
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}
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return null;
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}
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public static List<Object> allOf(Closure<?>... closures) {
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List<Object> values = new ArrayList<Object>();
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for (Closure<?> it : closures) {
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try {
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Object result = it.call();
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if (result != null) {
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values.add(result);
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}
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} catch (Exception e) {
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// ignore
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}
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}
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return values;
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}
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}
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@ -1,7 +1,21 @@
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package net.sourceforge.filebot.format;
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import static java.util.regex.Pattern.*;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Matcher;
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import net.sourceforge.filebot.util.FileUtilities;
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import com.ibm.icu.text.Transliterator;
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public class ExpressionFormatMethods {
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/**
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* Convenience methods for String.toLowerCase() and String.toUpperCase()
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*/
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public static String lower(String self) {
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return self.toLowerCase();
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}
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@ -10,6 +24,11 @@ public class ExpressionFormatMethods {
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return self.toUpperCase();
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}
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/**
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* Pad strings or numbers with given characters ('0' by default).
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*
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* e.g. "1" -> "01"
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*/
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public static String pad(String self, int length, String padding) {
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while (self.length() < length) {
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self = padding + self;
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@ -22,6 +41,241 @@ public class ExpressionFormatMethods {
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}
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public static String pad(Number self, int length) {
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return pad(self.toString(), length);
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return pad(self.toString(), length, "0");
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}
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/**
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* Return a substring matching the given pattern or break.
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*/
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public static String match(String self, String pattern) {
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return match(self, pattern, -1);
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}
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public static String match(String self, String pattern, int matchGroup) {
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Matcher matcher = compile(pattern, CASE_INSENSITIVE | UNICODE_CASE | MULTILINE).matcher(self);
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if (matcher.find()) {
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return (matcher.groupCount() > 0 && matchGroup < 0 ? matcher.group(1) : matcher.group(matchGroup < 0 ? 0 : matchGroup)).trim();
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} else {
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throw new IllegalArgumentException("Pattern not found");
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}
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}
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/**
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* Return a list of all matching patterns or break.
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*/
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public static List<String> matchAll(String self, String pattern) {
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return matchAll(self, pattern, 0);
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}
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public static List<String> matchAll(String self, String pattern, int matchGroup) {
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List<String> matches = new ArrayList<String>();
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Matcher matcher = compile(pattern, CASE_INSENSITIVE | UNICODE_CASE | MULTILINE).matcher(self);
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while (matcher.find()) {
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matches.add(matcher.group(matchGroup).trim());
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}
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if (matches.size() > 0) {
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return matches;
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} else {
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throw new IllegalArgumentException("Pattern not found");
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}
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}
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public static String removeAll(String self, String pattern) {
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return compile(pattern, CASE_INSENSITIVE | UNICODE_CASE | MULTILINE).matcher(self).replaceAll("").trim();
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}
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/**
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* Replace space characters with a given characters.
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*
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* e.g. "Doctor Who" -> "Doctor_Who"
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*/
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public static String space(String self, String replacement) {
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return self.replaceAll("[:?._]", " ").trim().replaceAll("\\s+", replacement);
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}
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/**
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* Upper-case all initials.
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*
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* e.g. "The Day a new Demon was born" -> "The Day A New Demon Was Born"
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*/
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public static String upperInitial(String self) {
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Matcher matcher = compile("(?<=[&()+.,-;<=>?\\[\\]_{|}~ ]|^)[a-z]").matcher(self);
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StringBuffer buffer = new StringBuffer();
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while (matcher.find()) {
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matcher.appendReplacement(buffer, matcher.group().toUpperCase());
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}
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matcher.appendTail(buffer);
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return buffer.toString();
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}
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public static String sortName(String self) {
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return sortName(self, "$2, $1");
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}
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public static String sortName(String self, String replacement) {
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return compile("^(The|A|An)\\s(.+)", CASE_INSENSITIVE).matcher(self).replaceFirst(replacement).trim();
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}
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/**
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* Get acronym, i.e. first letter of each word.
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*
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* e.g. "Deep Space 9" -> "DS9"
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*/
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public static String acronym(String self) {
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String name = sortName(self, "$2");
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Matcher matcher = compile("(?<=[&()+.,-;<=>?\\[\\]_{|}~ ]|^)[\\p{Alnum}]").matcher(name);
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StringBuilder buffer = new StringBuilder();
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while (matcher.find()) {
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buffer.append(matcher.group().toUpperCase());
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}
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return buffer.toString();
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}
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/**
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* Lower-case all letters that are not initials.
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*
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* e.g. "Gundam SEED" -> "Gundam Seed"
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*/
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public static String lowerTrail(String self) {
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Matcher matcher = compile("\\b(\\p{Alpha})(\\p{Alpha}+)\\b").matcher(self);
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StringBuffer buffer = new StringBuffer();
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while (matcher.find()) {
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matcher.appendReplacement(buffer, matcher.group(1) + matcher.group(2).toLowerCase());
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}
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matcher.appendTail(buffer);
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return buffer.toString();
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}
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/**
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* Return substring before the given pattern.
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*/
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public static String before(String self, String pattern) {
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Matcher matcher = compile(pattern, CASE_INSENSITIVE | UNICODE_CASE).matcher(self);
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// pattern was found, return leading substring, else return original value
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return matcher.find() ? self.substring(0, matcher.start()).trim() : self;
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}
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/**
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* Return substring after the given pattern.
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*/
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public static String after(String self, String pattern) {
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Matcher matcher = compile(pattern, CASE_INSENSITIVE | UNICODE_CASE).matcher(self);
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// pattern was found, return trailing substring, else return original value
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return matcher.find() ? self.substring(matcher.end(), self.length()).trim() : self;
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}
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/**
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* Replace trailing parenthesis including any leading whitespace.
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*
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* e.g. "The IT Crowd (UK)" -> "The IT Crowd"
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*/
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public static String replaceTrailingBrackets(String self) {
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return replaceTrailingBrackets(self, "");
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}
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public static String replaceTrailingBrackets(String self, String replacement) {
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return self.replaceAll("\\s*[(]([^)]*)[)]$", replacement).trim();
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}
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/**
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* Replace 'part identifier'.
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*
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* e.g. "Today Is the Day: Part 1" -> "Today Is the Day, Part 1" or "Today Is the Day (1)" -> "Today Is the Day, Part 1"
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*/
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public static String replacePart(String self) {
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return replacePart(self, "");
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}
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public static String replacePart(String self, String replacement) {
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// handle '(n)', '(Part n)' and ': Part n' like syntax
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String[] patterns = new String[] { "\\s*[(](\\w+)[)]$", "\\W+Part (\\w+)\\W*$" };
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for (String pattern : patterns) {
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Matcher matcher = compile(pattern, CASE_INSENSITIVE).matcher(self);
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if (matcher.find()) {
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return matcher.replaceAll(replacement).trim();
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}
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}
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// no pattern matches, nothing to replace
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return self;
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}
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/**
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* Apply ICU transliteration
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*
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* @see http://userguide.icu-project.org/transforms/general
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*/
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public static String transliterate(String self, String transformIdentifier) {
|
||||
return Transliterator.getInstance(transformIdentifier).transform(self);
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert Unicode to ASCII as best as possible. Works with most alphabets/scripts used in the world.
|
||||
*
|
||||
* e.g. "Österreich" -> "Osterreich" "カタカナ" -> "katakana"
|
||||
*/
|
||||
public static String ascii(String self) {
|
||||
return ascii(self, " ");
|
||||
}
|
||||
|
||||
public static String ascii(String self, String fallback) {
|
||||
return Transliterator.getInstance("Any-Latin;Latin-ASCII;[:Diacritic:]remove").transform(self).replaceAll("[^\\p{ASCII}]+", fallback).trim();
|
||||
}
|
||||
|
||||
/**
|
||||
* Replace multiple replacement pairs
|
||||
*
|
||||
* e.g. replace('ä', 'ae', 'ö', 'oe', 'ü', 'ue')
|
||||
*/
|
||||
public static String replace(String self, String tr0, String tr1, String... tr) {
|
||||
// the first two parameters are required, the rest of the parameter sequence is optional
|
||||
self = self.replace(tr0, tr1);
|
||||
|
||||
for (int i = 0; i < tr.length - 1; i += 2) {
|
||||
String t = tr[i];
|
||||
String r = tr[i + 1];
|
||||
self = self.replace(t, r);
|
||||
}
|
||||
|
||||
return self;
|
||||
}
|
||||
|
||||
/**
|
||||
* File utilities
|
||||
*/
|
||||
public static File getRoot(File self) {
|
||||
return FileUtilities.listPath(self).get(0);
|
||||
}
|
||||
|
||||
public static List<File> getPathList(File self) {
|
||||
return FileUtilities.listPath(self);
|
||||
}
|
||||
|
||||
public static File getRelativePathTail(File self, int tailSize) {
|
||||
return FileUtilities.getRelativePathTail(self, tailSize);
|
||||
}
|
||||
|
||||
public static long getDiskSpace(File self) {
|
||||
List<File> list = FileUtilities.listPath(self);
|
||||
for (int i = list.size() - 1; i >= 0; i--) {
|
||||
if (list.get(i).exists()) {
|
||||
long usableSpace = list.get(i).getUsableSpace();
|
||||
if (usableSpace > 0) {
|
||||
return usableSpace;
|
||||
}
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue