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package com.sun.faces.scripting.groovy;
import com.sun.faces.RIConstants;
import com.sun.faces.scripting.ScriptManager;
import com.sun.faces.util.FacesLogger;
import javax.servlet.ServletContext;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.URL;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
public class GroovyScriptManager implements ScriptManager {
private static final Logger LOGGER = FacesLogger.APPLICATION.getLogger();
private static final String SCRIPT_PATH = "/WEB-INF/groovy/";
private static final String SUFFIX = ".groovy";
private ServletContext servletContext;
// Borrowed from AnnotationScanner. Perhaps this should be made public somewhere
public static final Set FACES_ANNOTATIONS;
static {
HashSet annotations = new HashSet(15, 1.0f);
Collections.addAll(annotations,
"javax.faces.component.FacesComponent",
"javax.faces.component.*",
"javax.faces.convert.FacesConverter",
"javax.faces.convert.*",
"javax.faces.validator.FacesValidator",
"javax.faces.validator.*",
"javax.faces.render.FacesRenderer",
"javax.faces.render.*",
"javax.faces.bean.ManagedBean",
"javax.faces.bean.*",
"javax.faces.event.NamedEvent",
"javax.faces.event.*",
"javax.faces.component.behavior.FacesBehavior",
"javax.faces.component.behavior.*",
"javax.faces.render.FacesBehaviorRenderer");
FACES_ANNOTATIONS = Collections.unmodifiableSet(annotations);
}
public GroovyScriptManager(ServletContext servletContext) {
this.servletContext = servletContext;
}
public Set getScripts() {
Set scripts = new HashSet();
processWebInfGroovy(servletContext, servletContext.getResourcePaths(SCRIPT_PATH), scripts);
return scripts;
}
private void processWebInfGroovy(ServletContext sc, Set paths, Set classList) {
if (paths != null && !paths.isEmpty()) {
for (String pathElement : paths) {
if (pathElement.endsWith("/")) {
processWebInfGroovy(sc, sc.getResourcePaths(pathElement), classList);
} else {
if (pathElement.endsWith(SUFFIX)) {
String cname = convertToClassName(SCRIPT_PATH, pathElement);
if (containsAnnotation(sc, pathElement)) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "[WEB-INF/groovy] Found annotated Class: {0}", cname);
}
classList.add(cname);
}
}
}
}
}
}
private boolean containsAnnotation(ServletContext sc, String pathElement) {
boolean containsAnnotation = false;
BufferedReader in = null;
try {
URL url = sc.getResource(pathElement);
in = new BufferedReader(new InputStreamReader(url.openStream(), RIConstants.CHAR_ENCODING));
String line = in.readLine();
while ((line != null) && (!containsAnnotation)) {
line = line.trim();
if (line.length() != 0) {
for (String pattern : FACES_ANNOTATIONS) {
if (line.indexOf(pattern) > -1) {
containsAnnotation = true;
break;
}
}
}
line = in.readLine();
}
} catch (Exception ioe) {
if (LOGGER.isLoggable(Level.SEVERE)) {
LOGGER.log(Level.SEVERE, null, ioe);
}
} finally {
if (in != null) {
try {
in.close();
} catch (Exception e) {
if (LOGGER.isLoggable(Level.FINEST)) {
LOGGER.log(Level.FINEST, "Closing stream", e);
}
}
}
}
return containsAnnotation;
}
/**
* Utility method for converting paths to fully qualified class names.
*
* @param prefix the prefix that should be stripped from the class name
* before converting it
* @param pathEntry a path to a class file
* @return a fully qualified class name using dot notation
*/
private String convertToClassName(String prefix, String pathEntry) {
String className = pathEntry;
if (prefix != null) {
// remove the prefix
className = className.substring(prefix.length());
}
// remove the .class suffix
className = className.substring(0, (className.length() - 7));
return className.replace('/', '.');
}
}