| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.sling.scripting.jsp; |
| |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| |
| import org.apache.sling.api.SlingException; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceMetadata; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.commons.classloader.ClassLoaderWriter; |
| import org.apache.sling.commons.compiler.JavaCompiler; |
| import org.apache.sling.scripting.jsp.jasper.IOProvider; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * The <code>SlingIOProvider</code> |
| */ |
| class SlingIOProvider implements IOProvider { |
| |
| private static final String WEB_INF_TAGS = "/WEB-INF/tags"; |
| |
| /** default log */ |
| private final Logger log = LoggerFactory.getLogger(SlingIOProvider.class); |
| |
| private final ThreadLocal<ResourceResolver> requestResourceResolver; |
| |
| private final ClassLoaderWriter classLoaderWriter; |
| |
| private final JavaCompiler javaCompiler; |
| |
| SlingIOProvider(final ClassLoaderWriter classLoaderWriter, final JavaCompiler compiler) { |
| this.requestResourceResolver = new ThreadLocal<ResourceResolver>(); |
| this.classLoaderWriter = classLoaderWriter; |
| this.javaCompiler = compiler; |
| } |
| |
| /** |
| * Set the thread context resource resolver. |
| */ |
| ResourceResolver setRequestResourceResolver(final ResourceResolver resolver) { |
| final ResourceResolver old = requestResourceResolver.get(); |
| requestResourceResolver.set(resolver); |
| return old; |
| } |
| |
| /** |
| * Reset the thread context resource resolver. |
| */ |
| void resetRequestResourceResolver(final ResourceResolver resolver) { |
| requestResourceResolver.set(resolver); |
| } |
| |
| // ---------- IOProvider interface ----------------------------------------- |
| |
| /** |
| * Returns an InputStream for the file name which is looked up with the |
| * ResourceProvider and retrieved from the Resource if the StreamProvider |
| * interface is implemented. |
| */ |
| public InputStream getInputStream(final String path) |
| throws FileNotFoundException, IOException { |
| if ( path.startsWith(":") ) { |
| return this.classLoaderWriter.getInputStream(path.substring(1)); |
| } |
| ResourceResolver resolver = requestResourceResolver.get(); |
| if (resolver != null) { |
| try { |
| final Resource resource = resolver.getResource(cleanPath(path, true)); |
| if (resource != null) { |
| final InputStream stream = resource.adaptTo(InputStream.class); |
| if (stream != null) { |
| return stream; |
| } |
| } |
| } catch (final SlingException se) { |
| throw (IOException) new IOException( |
| "Failed to get InputStream for " + path).initCause(se); |
| } |
| } |
| throw new FileNotFoundException("Cannot find " + path); |
| } |
| |
| /** |
| * Returns the value of the last modified meta data field of the resource |
| * found at file name or zero if the meta data field is not set. If the |
| * resource does not exist or an error occurrs finding the resource, -1 is |
| * returned. |
| */ |
| public long lastModified(final String path) { |
| if ( path.startsWith(":") ) { |
| return this.classLoaderWriter.getLastModified(path.substring(1)); |
| } |
| ResourceResolver resolver = requestResourceResolver.get(); |
| if (resolver != null) { |
| try { |
| final Resource resource = resolver.getResource(cleanPath(path, true)); |
| if (resource != null) { |
| ResourceMetadata meta = resource.getResourceMetadata(); |
| long modTime = meta.getModificationTime(); |
| return (modTime > 0) ? modTime : 0; |
| } |
| } catch (final SlingException se) { |
| log.error("Cannot get last modification time for " + path, se); |
| } |
| } |
| // fallback to "non-existant" in case of problems |
| return -1; |
| } |
| |
| /** |
| * Removes the named item from the repository. |
| */ |
| public boolean delete(final String path) { |
| return this.classLoaderWriter.delete(path.substring(1)); |
| } |
| |
| /** |
| * Returns an output stream to write to the repository. |
| */ |
| public OutputStream getOutputStream(final String path) { |
| return this.classLoaderWriter.getOutputStream(path.substring(1)); |
| } |
| |
| /** |
| * Renames a node in the repository. |
| */ |
| public boolean rename(final String oldFileName, final String newFileName) { |
| return this.classLoaderWriter.rename(oldFileName.substring(1), newFileName.substring(1)); |
| } |
| |
| /** |
| * Creates a folder hierarchy in the repository. |
| */ |
| public boolean mkdirs(final String path) { |
| // we just do nothing |
| return true; |
| } |
| |
| /** |
| * @see org.apache.sling.scripting.jsp.jasper.IOProvider#getClassLoader() |
| */ |
| public ClassLoader getClassLoader() { |
| return this.classLoaderWriter.getClassLoader(); |
| } |
| |
| // ---------- Helper Methods for JspServletContext ------------------------- |
| |
| |
| URL getURL(final String path) throws MalformedURLException { |
| ResourceResolver resolver = requestResourceResolver.get(); |
| if (resolver != null) { |
| try { |
| final Resource resource = resolver.getResource(cleanPath(path, true)); |
| return (resource != null) ? resource.adaptTo(URL.class) : null; |
| } catch (final SlingException se) { |
| throw (MalformedURLException) new MalformedURLException( |
| "Cannot get URL for " + path).initCause(se); |
| } |
| } |
| return null; |
| } |
| |
| Set<String> getResourcePaths(final String path) { |
| final Set<String> paths = new HashSet<String>(); |
| |
| ResourceResolver resolver = requestResourceResolver.get(); |
| if (resolver != null) { |
| try { |
| final String cleanedPath = cleanPath(path, false); |
| final boolean startsWithWebInfTags = cleanedPath.startsWith(WEB_INF_TAGS); |
| |
| Resource resource = resolver.getResource(startsWithWebInfTags ? cleanedPath.substring(WEB_INF_TAGS.length()) : cleanedPath); |
| if (resource != null) { |
| Iterator<Resource> entries = resolver.listChildren(resource); |
| while (entries.hasNext()) { |
| final String entryPath = entries.next().getPath(); |
| if (startsWithWebInfTags) { |
| paths.add(WEB_INF_TAGS + entryPath); |
| } else { |
| paths.add(entryPath); |
| } |
| } |
| } |
| } catch (final SlingException se) { |
| log.warn("getResourcePaths: Cannot list children of " + path, |
| se); |
| } |
| } |
| |
| return paths.isEmpty() ? null : paths; |
| } |
| |
| // ---------- internal ----------------------------------------------------- |
| |
| private String cleanPath(String path, final boolean removeWebInfTags) { |
| // replace backslash by slash |
| path = path.replace('\\', '/'); |
| |
| // cut off trailing slash |
| while (path.endsWith("/")) { |
| path = path.substring(0, path.length() - 1); |
| } |
| |
| if (removeWebInfTags && path.startsWith(WEB_INF_TAGS)) { |
| path = path.substring(WEB_INF_TAGS.length()); |
| } |
| |
| return path; |
| } |
| |
| /** |
| * @see org.apache.sling.scripting.jsp.jasper.IOProvider#getJavaCompiler() |
| */ |
| public JavaCompiler getJavaCompiler() { |
| return this.javaCompiler; |
| } |
| |
| /** |
| * @see org.apache.sling.scripting.jsp.jasper.IOProvider#getClassLoaderWriter() |
| */ |
| public ClassLoaderWriter getClassLoaderWriter() { |
| return this.classLoaderWriter; |
| } |
| } |