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package com.sun.faces.config.configprovider;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Collection;
import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Set;
import java.io.IOException;
import javax.servlet.ServletContext;
import javax.faces.FacesException;
import com.sun.faces.facelets.util.Classpath;
import com.sun.faces.util.Util;
import com.sun.faces.spi.ConfigurationResourceProvider;
import java.net.URI;
/**
*
*/
public class MetaInfFaceletTaglibraryConfigProvider implements
ConfigurationResourceProvider {
private static final String SUFFIX = ".taglib.xml";
private static final String WEB_INF_CLASSES =
"/WEB-INF/classes/META-INF";
/**
* Array of taglib.xml files included with Facelets 1.1.x. If they are
* on the classpath, we don't want to process them.
*/
private static final String[] FACELET_CONFIG_FILES = {
"META-INF/jsf-core.taglib.xml",
"META-INF/jsf-html.taglib.xml",
"META-INF/jsf-ui.taglib.xml",
"META-INF/jstl-core.taglib.xml",
"META-INF/jstl-fn.taglib.xml"
};
private static final String[] BUILT_IN_TAGLIB_XML_FILES = {
"META-INF/mojarra_ext.taglib.xml"
};
// -------------------------------------------- Methods from ConfigProcessor
public Collection getResources(ServletContext context) {
try {
URL[] externalTaglibUrls = Classpath.search(Util.getCurrentLoader(this),
"META-INF/",
SUFFIX);
URL[] builtInTaglibUrls = new URL[BUILT_IN_TAGLIB_XML_FILES.length];
ClassLoader runtimeClassLoader = this.getClass().getClassLoader();
for (int i = 0; i < BUILT_IN_TAGLIB_XML_FILES.length; i++) {
builtInTaglibUrls[i] = runtimeClassLoader.getResource(BUILT_IN_TAGLIB_XML_FILES[i]);
}
URL[] urls = new URL[externalTaglibUrls.length + builtInTaglibUrls.length];
System.arraycopy(externalTaglibUrls, 0, urls, 0, externalTaglibUrls.length);
System.arraycopy(builtInTaglibUrls, 0, urls, externalTaglibUrls.length, builtInTaglibUrls.length);
// perform some 'correctness' checking. If the user has
// removed the FaceletViewHandler from their configuration,
// but has left the jsf-facelets.jar in the classpath, we
// need to ignore the default configuration resouces from
// that JAR.
List urlsList = pruneURLs(urls);
// special case for finding taglib files in WEB-INF/classes/META-INF
Set paths = context.getResourcePaths(WEB_INF_CLASSES);
if (paths != null) {
for (Object path : paths) {
String p = path.toString();
if (p.endsWith(".taglib.xml")) {
String urlString = context.getResource(p).toExternalForm();
urlString = urlString.replaceAll(" ", "%20");
try {
urlsList.add(new URI(urlString));
} catch (URISyntaxException ex) {
throw new FacesException(ex);
}
}
}
}
return urlsList;
} catch (IOException ioe) {
throw new FacesException("Error searching classpath from facelet-taglib documents", ioe);
}
}
// --------------------------------------------------------- Private Methods
private List pruneURLs(URL[] urls) {
List ret = null;
if (urls != null && urls.length > 0) {
for (URL url : urls) {
String u = url.toString();
boolean found = false;
for (String excludeName : FACELET_CONFIG_FILES) {
if (u.contains(excludeName)) {
found = true;
break;
}
}
if (!found) {
if (ret == null) {
ret = new ArrayList();
}
try {
String urlString = url.toExternalForm();
urlString = urlString.replaceAll(" ", "%20");
ret.add(new URI(urlString));
} catch (URISyntaxException ex) {
throw new FacesException(ex);
}
}
}
}
if (ret == null) {
ret = Collections.emptyList();
}
return ret;
}
}