| /* |
| * 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.commons.vfs2.provider.url; |
| |
| import org.apache.commons.vfs2.FileName; |
| import org.apache.commons.vfs2.FileSystemException; |
| import org.apache.commons.vfs2.provider.AbstractFileNameParser; |
| import org.apache.commons.vfs2.provider.URLFileName; |
| import org.apache.commons.vfs2.provider.URLFileNameParser; |
| import org.apache.commons.vfs2.provider.VfsComponentContext; |
| import org.apache.commons.vfs2.provider.local.GenericFileNameParser; |
| |
| /** |
| * Implementation for any java.net.url based file system. |
| * <p> |
| * Composite of URLFilenameParser and GenericFilenameParser |
| */ |
| public class UrlFileNameParser extends AbstractFileNameParser { |
| |
| private final URLFileNameParser url = new URLFileNameParser(80); |
| private final GenericFileNameParser generic = new GenericFileNameParser(); |
| |
| public UrlFileNameParser() { |
| } |
| |
| @Override |
| public boolean encodeCharacter(final char ch) { |
| return super.encodeCharacter(ch) || ch == '?'; |
| } |
| |
| /** |
| * Parse a URI. |
| * |
| * @param context The component context. |
| * @param base The base FileName. |
| * @param uri The target file name. |
| * @return The FileName. |
| * @throws FileSystemException if an error occurs |
| */ |
| @Override |
| public FileName parseUri(final VfsComponentContext context, final FileName base, final String uri) |
| throws FileSystemException { |
| if (isUrlBased(base, uri)) { |
| return url.parseUri(context, base, uri); |
| } |
| |
| return generic.parseUri(context, base, uri); |
| } |
| |
| /** |
| * Guess if the given file name is a URL with host or not. |
| * <p> |
| * VFS treats such URLs differently. |
| * </p> |
| * <p> |
| * A file name is URL-based if the base is a {@code URLFileName} or there are only 2 slashes after the scheme. e.g: |
| * {@code http://host/path}, {@code file:/path/to/file}, {@code file:///path/to/file}. |
| * </p> |
| * |
| * @param base The file name is relative to this base. |
| * @param fileName The file name. |
| * @return true if file name contains two slashes or base was URLFileName. |
| */ |
| protected boolean isUrlBased(final FileName base, final String fileName) { |
| if (base instanceof URLFileName) { |
| return true; |
| } |
| |
| return countSlashes(fileName) == 2; |
| } |
| |
| /** |
| * This method counts the slashes after the scheme. |
| * |
| * @param fileName The file name. |
| * @return number of slashes |
| */ |
| protected int countSlashes(final String fileName) { |
| int state = 0; |
| int nuofSlash = 0; |
| for (int pos = 0; pos < fileName.length(); pos++) { |
| final char c = fileName.charAt(pos); |
| if (state == 0) { |
| if (c >= 'a' && c <= 'z') { |
| continue; |
| } |
| if (c == ':') { |
| state++; |
| continue; |
| } |
| } else if (state == 1) { |
| if (c != '/') { |
| return nuofSlash; |
| } |
| nuofSlash++; |
| } |
| } |
| return nuofSlash; |
| } |
| } |