--- /dev/null
+//
+// ========================================================================
+// Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// All rights reserved. This program and the accompanying materials
+// are made available under the terms of the Eclipse Public License v1.0
+// and Apache License v2.0 which accompanies this distribution.
+//
+// The Eclipse Public License is available at
+// http://www.eclipse.org/legal/epl-v10.html
+//
+// The Apache License v2.0 is available at
+// http://www.opensource.org/licenses/apache2.0.php
+//
+// You may elect to redistribute this code under either of these licenses.
+// ========================================================================
+//
+
+package org.eclipse.jetty.util.resource;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.channels.FileChannel;
+import java.nio.channels.ReadableByteChannel;
+import java.nio.file.StandardOpenOption;
+import java.security.Permission;
+
+import org.eclipse.jetty.util.IO;
+import org.eclipse.jetty.util.URIUtil;
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.Logger;
+
+
+/* ------------------------------------------------------------ */
+/** File Resource.
+ *
+ * Handle resources of implied or explicit file type.
+ * This class can check for aliasing in the filesystem (eg case
+ * insensitivity). By default this is turned on, or it can be controlled
+ * by calling the static method @see FileResource#setCheckAliases(boolean)
+ *
+ */
+public class FileResource extends Resource
+{
+ private static final Logger LOG = Log.getLogger(FileResource.class);
+
+ /* ------------------------------------------------------------ */
+ private final File _file;
+ private final String _uri;
+ private final URI _alias;
+
+ /* -------------------------------------------------------- */
+ public FileResource(URL url)
+ throws IOException, URISyntaxException
+ {
+ File file;
+ try
+ {
+ // Try standard API to convert URL to file.
+ file =new File(url.toURI());
+ }
+ catch (URISyntaxException e)
+ {
+ throw e;
+ }
+ catch (Exception e)
+ {
+ if (!url.toString().startsWith("file:"))
+ throw new IllegalArgumentException("!file:");
+
+ LOG.ignore(e);
+ try
+ {
+ // Assume that File.toURL produced unencoded chars. So try encoding them.
+ String file_url="file:"+URIUtil.encodePath(url.toString().substring(5));
+ URI uri = new URI(file_url);
+ if (uri.getAuthority()==null)
+ file = new File(uri);
+ else
+ file = new File("//"+uri.getAuthority()+URIUtil.decodePath(url.getFile()));
+ }
+ catch (Exception e2)
+ {
+ LOG.ignore(e2);
+ // Still can't get the file. Doh! try good old hack!
+ URLConnection connection=url.openConnection();
+ Permission perm = connection.getPermission();
+ file = new File(perm==null?url.getFile():perm.getName());
+ }
+ }
+
+ _file=file;
+ _uri=normalizeURI(_file,url.toURI());
+ _alias=checkAlias(_file);
+ }
+
+ /* -------------------------------------------------------- */
+ public FileResource(URI uri)
+ {
+ File file=new File(uri);
+ _file=file;
+ URI file_uri=_file.toURI();
+ _uri=normalizeURI(_file,uri);
+
+ if (!_uri.equals(file_uri.toString()))
+ {
+ // URI and File URI are different. Is it just an encoding difference?
+ if (!file_uri.toString().equals(URIUtil.decodePath(uri.toString())))
+ _alias=_file.toURI();
+ else
+ _alias=checkAlias(_file);
+ }
+ else
+ _alias=checkAlias(_file);
+ }
+
+ /* -------------------------------------------------------- */
+ FileResource(File file)
+ {
+ _file=file;
+ _uri=normalizeURI(_file,_file.toURI());
+ _alias=checkAlias(_file);
+ }
+
+ /* -------------------------------------------------------- */
+ private static String normalizeURI(File file, URI uri)
+ {
+ String u =uri.toASCIIString();
+ if (file.isDirectory())
+ {
+ if(!u.endsWith("/"))
+ u+="/";
+ }
+ else if (file.exists() && u.endsWith("/"))
+ u=u.substring(0,u.length()-1);
+ return u;
+ }
+
+ /* -------------------------------------------------------- */
+ private static URI checkAlias(File file)
+ {
+ try
+ {
+ String abs=file.getAbsolutePath();
+ String can=file.getCanonicalPath();
+
+ if (!abs.equals(can))
+ {
+ LOG.debug("ALIAS abs={} can={}",abs,can);
+
+ URI alias=new File(can).toURI();
+ // Have to encode the path as File.toURI does not!
+ return new URI("file://"+URIUtil.encodePath(alias.getPath()));
+ }
+ }
+ catch(Exception e)
+ {
+ LOG.warn("bad alias for {}: {}",file,e.toString());
+ LOG.debug(e);
+ try
+ {
+ return new URI("http://eclipse.org/bad/canonical/alias");
+ }
+ catch(Exception e2)
+ {
+ LOG.ignore(e2);
+ throw new RuntimeException(e);
+ }
+ }
+
+ return null;
+ }
+
+ /* -------------------------------------------------------- */
+ @Override
+ public Resource addPath(String path)
+ throws IOException,MalformedURLException
+ {
+ path = org.eclipse.jetty.util.URIUtil.canonicalPath(path);
+
+ if (path==null)
+ throw new MalformedURLException();
+
+ if ("/".equals(path))
+ return this;
+
+ path=URIUtil.encodePath(path);
+ // The encoded path should be a suffix of the resource (give or take a directory / )
+ URI uri;
+ try
+ {
+ if (_file.isDirectory())
+ {
+ // treat all paths being added as relative
+ uri=new URI(URIUtil.addPaths(_uri,path));
+ }
+ else
+ {
+ uri=new URI(_uri+path);
+ }
+ }
+ catch(final URISyntaxException e)
+ {
+ throw new MalformedURLException(){{initCause(e);}};
+ }
+
+ return new FileResource(uri);
+ }
+
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public URI getAlias()
+ {
+ return _alias;
+ }
+
+ /* -------------------------------------------------------- */
+ /**
+ * Returns true if the resource exists.
+ */
+ @Override
+ public boolean exists()
+ {
+ return _file.exists();
+ }
+
+ /* -------------------------------------------------------- */
+ /**
+ * Returns the last modified time
+ */
+ @Override
+ public long lastModified()
+ {
+ return _file.lastModified();
+ }
+
+ /* -------------------------------------------------------- */
+ /**
+ * Returns true if the resource is a container/directory.
+ */
+ @Override
+ public boolean isDirectory()
+ {
+ return _file.exists() && _file.isDirectory() || _uri.endsWith("/");
+ }
+
+ /* --------------------------------------------------------- */
+ /**
+ * Return the length of the resource
+ */
+ @Override
+ public long length()
+ {
+ return _file.length();
+ }
+
+
+ /* --------------------------------------------------------- */
+ /**
+ * Returns the name of the resource
+ */
+ @Override
+ public String getName()
+ {
+ return _file.getAbsolutePath();
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * Returns an File representing the given resource or NULL if this
+ * is not possible.
+ */
+ @Override
+ public File getFile()
+ {
+ return _file;
+ }
+
+ /* --------------------------------------------------------- */
+ /**
+ * Returns an input stream to the resource
+ */
+ @Override
+ public InputStream getInputStream() throws IOException
+ {
+ return new FileInputStream(_file);
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public ReadableByteChannel getReadableByteChannel() throws IOException
+ {
+ return FileChannel.open(_file.toPath(),StandardOpenOption.READ);
+ }
+
+ /* --------------------------------------------------------- */
+ /**
+ * Deletes the given resource
+ */
+ @Override
+ public boolean delete()
+ throws SecurityException
+ {
+ return _file.delete();
+ }
+
+ /* --------------------------------------------------------- */
+ /**
+ * Rename the given resource
+ */
+ @Override
+ public boolean renameTo( Resource dest)
+ throws SecurityException
+ {
+ if( dest instanceof FileResource)
+ return _file.renameTo( ((FileResource)dest)._file);
+ else
+ return false;
+ }
+
+ /* --------------------------------------------------------- */
+ /**
+ * Returns a list of resources contained in the given resource
+ */
+ @Override
+ public String[] list()
+ {
+ String[] list =_file.list();
+ if (list==null)
+ return null;
+ for (int i=list.length;i-->0;)
+ {
+ if (new File(_file,list[i]).isDirectory() &&
+ !list[i].endsWith("/"))
+ list[i]+="/";
+ }
+ return list;
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @param o
+ * @return <code>true</code> of the object <code>o</code> is a {@link FileResource} pointing to the same file as this resource.
+ */
+ @Override
+ public boolean equals( Object o)
+ {
+ if (this == o)
+ return true;
+
+ if (null == o || ! (o instanceof FileResource))
+ return false;
+
+ FileResource f=(FileResource)o;
+ return f._file == _file || (null != _file && _file.equals(f._file));
+ }
+
+ /* ------------------------------------------------------------ */
+ /**
+ * @return the hashcode.
+ */
+ @Override
+ public int hashCode()
+ {
+ return null == _file ? super.hashCode() : _file.hashCode();
+ }
+
+ /* ------------------------------------------------------------ */
+ @Override
+ public void copyTo(File destination)
+ throws IOException
+ {
+ if (isDirectory())
+ {
+ IO.copyDir(getFile(),destination);
+ }
+ else
+ {
+ if (destination.exists())
+ throw new IllegalArgumentException(destination+" exists");
+ IO.copy(getFile(),destination);
+ }
+ }
+
+ @Override
+ public boolean isContainedIn(Resource r) throws MalformedURLException
+ {
+ return false;
+ }
+
+ @Override
+ public void close()
+ {
+ }
+
+ @Override
+ public URL getURL()
+ {
+ try
+ {
+ return new URL(_uri);
+ }
+ catch (MalformedURLException e)
+ {
+ throw new IllegalStateException(e);
+ }
+ }
+
+ @Override
+ public URI getURI()
+ {
+ return _file.toURI();
+ }
+
+ @Override
+ public String toString()
+ {
+ return _uri;
+ }
+
+}
projects / gigi.git / blobdiff