| /* |
| * 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.fsprovider.internal.mapper; |
| |
| import java.io.File; |
| import java.util.Iterator; |
| |
| import org.apache.commons.collections.IteratorUtils; |
| import org.apache.commons.collections.Predicate; |
| import org.apache.commons.collections.Transformer; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceResolver; |
| import org.apache.sling.fsprovider.internal.ContentFileExtensions; |
| import org.apache.sling.fsprovider.internal.FsMode; |
| import org.apache.sling.fsprovider.internal.FsResourceMapper; |
| import org.apache.sling.fsprovider.internal.parser.ContentFileCache; |
| |
| public final class FileResourceMapper implements FsResourceMapper { |
| |
| // The location in the resource tree where the resources are mapped |
| private final String providerRoot; |
| |
| // providerRoot + "/" to be used for prefix matching of paths |
| private final String providerRootPrefix; |
| |
| // The "root" file or folder in the file system |
| private final File providerFile; |
| |
| private final ContentFileExtensions contentFileExtensions; |
| private final ContentFileCache contentFileCache; |
| private final FsMode fsMode; |
| |
| public FileResourceMapper(String providerRoot, File providerFile, |
| ContentFileExtensions contentFileExtensions, ContentFileCache contentFileCache, FsMode fsMode) { |
| this.providerRoot = providerRoot; |
| this.providerRootPrefix = providerRoot.concat("/"); |
| this.providerFile = providerFile; |
| this.contentFileExtensions = contentFileExtensions; |
| this.contentFileCache = contentFileCache; |
| this.fsMode = fsMode; |
| } |
| |
| @Override |
| public Resource getResource(final ResourceResolver resolver, final String resourcePath) { |
| File file = getFile(resourcePath); |
| if (file != null) { |
| return new FileResource(resolver, resourcePath, file, contentFileExtensions, contentFileCache, fsMode); |
| } |
| else { |
| return null; |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public Iterator<Resource> getChildren(final ResourceResolver resolver, final Resource parent) { |
| final String parentPath = parent.getPath(); |
| File parentFile = parent.adaptTo(File.class); |
| |
| // not a FsResource, try to create one from the resource |
| if (parentFile == null) { |
| // if the parent path is at or below the provider root, get |
| // the respective file |
| parentFile = getFile(parentPath); |
| |
| // if the parent path is actually the parent of the provider |
| // root, return a single element iterator just containing the |
| // provider file, unless the provider file is a directory and |
| // a repository item with the same path actually exists |
| if (parentFile == null) { |
| |
| if (providerFile.exists() && !StringUtils.startsWith(parentPath, providerRoot)) { |
| String parentPathPrefix = parentPath.concat("/"); |
| if (providerRoot.startsWith(parentPathPrefix)) { |
| String relPath = providerRoot.substring(parentPathPrefix.length()); |
| if (relPath.indexOf('/') < 0) { |
| Resource res = new FileResource(resolver, providerRoot, providerFile, contentFileExtensions, contentFileCache, fsMode); |
| return IteratorUtils.singletonIterator(res); |
| } |
| } |
| } |
| |
| // no children here |
| return null; |
| } |
| } |
| |
| // ensure parent is a directory |
| if (!parentFile.isDirectory()) { |
| return null; |
| } |
| |
| Iterator<File> children = IteratorUtils.filteredIterator(IteratorUtils.arrayIterator(parentFile.listFiles()), new Predicate() { |
| @Override |
| public boolean evaluate(Object object) { |
| File file = (File)object; |
| return !contentFileExtensions.matchesSuffix(file); |
| } |
| }); |
| if (!children.hasNext()) { |
| return null; |
| } |
| return IteratorUtils.transformedIterator(children, new Transformer() { |
| @Override |
| public Object transform(Object input) { |
| File file = (File)input; |
| String path = parentPath + "/" + Escape.fileToResourceName(file.getName()); |
| return new FileResource(resolver, path, file, contentFileExtensions, contentFileCache, fsMode); |
| } |
| }); |
| } |
| |
| /** |
| * Returns a file corresponding to the given absolute resource tree path. If |
| * the path equals the configured provider root, the provider root file is |
| * returned. If the path starts with the configured provider root, a file is |
| * returned relative to the provider root file whose relative path is the |
| * remains of the resource tree path without the provider root path. |
| * Otherwise <code>null</code> is returned. |
| */ |
| private File getFile(String path) { |
| if (path.equals(providerRoot)) { |
| return providerFile; |
| } |
| if (path.startsWith(providerRootPrefix)) { |
| String relPath = Escape.resourceToFileName(path.substring(providerRootPrefix.length())); |
| File file = new File(providerFile, relPath); |
| if (file.exists() && !contentFileExtensions.matchesSuffix(file)) { |
| return file; |
| } |
| } |
| return null; |
| } |
| |
| } |