| package org.eclipse.jdt.launching.sourcelookup; |
| |
| /* |
| * (c) Copyright IBM Corp. 2000, 2001. |
| * All Rights Reserved. |
| */ |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.StringReader; |
| import java.text.MessageFormat; |
| |
| import javax.xml.parsers.DocumentBuilder; |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.ParserConfigurationException; |
| import org.apache.xerces.dom.DocumentImpl; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.core.runtime.PlatformObject; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.jdt.core.IJavaModelStatusConstants; |
| import org.eclipse.jdt.core.JavaModelException; |
| import org.eclipse.jdt.internal.launching.JavaLaunchConfigurationUtils; |
| import org.eclipse.jdt.internal.launching.LaunchingMessages; |
| import org.eclipse.jdt.internal.launching.LaunchingPlugin; |
| import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| import org.xml.sax.InputSource; |
| import org.xml.sax.SAXException; |
| |
| /** |
| * Locates source elements in a directory in the local |
| * file system. Returns instances of <code>LocalFileStorage</code>. |
| * <p> |
| * This class may be instantiated; it is not intended to be subclassed. |
| * </p> |
| * @see IJavaSourceLocation |
| * @since 2.0 |
| */ |
| public class DirectorySourceLocation extends PlatformObject implements IJavaSourceLocation { |
| |
| /** |
| * The directory associated with this source location |
| */ |
| private File fDirectory; |
| |
| /** |
| * Constructs a new empty source location to be initialized from |
| * a memento. |
| */ |
| public DirectorySourceLocation() { |
| } |
| |
| /** |
| * Constructs a new source location that will retrieve source |
| * elements from the given directory. |
| * |
| * @param directory a directory |
| */ |
| public DirectorySourceLocation(File directory) { |
| setDirectory(directory); |
| } |
| |
| /** |
| * @see IJavaSourceLocation#findSourceElement(String) |
| */ |
| public Object findSourceElement(String name) throws CoreException { |
| if (getDirectory() == null) { |
| return null; |
| } |
| |
| // guess at source name if an inner type |
| String pathStr= name.replace('.', '/'); |
| int dotIndex= pathStr.lastIndexOf('/'); |
| int dollarIndex= pathStr.indexOf('$', dotIndex + 1); |
| if (dollarIndex >= 0) { |
| pathStr = pathStr.substring(0, dollarIndex); |
| } |
| pathStr += ".java"; //$NON-NLS-1$ |
| try { |
| IPath root = new Path(getDirectory().getCanonicalPath()); |
| root = root.append(new Path(pathStr)); |
| File file = root.toFile(); |
| if (file.exists()) { |
| return new LocalFileStorage(file); |
| } |
| } catch (IOException e) { |
| throw new JavaModelException(e, IJavaModelStatusConstants.IO_EXCEPTION); |
| } |
| return null; |
| } |
| |
| /** |
| * Sets the directory in which source elements will |
| * be searched for. |
| * |
| * @param directory a directory |
| */ |
| private void setDirectory(File directory) { |
| fDirectory = directory; |
| } |
| |
| /** |
| * Returns the directory associated with this source |
| * location. |
| * |
| * @return directory |
| */ |
| public File getDirectory() { |
| return fDirectory; |
| } |
| |
| /** |
| * @see java.lang.Object#equals(java.lang.Object) |
| */ |
| public boolean equals(Object object) { |
| return object instanceof DirectorySourceLocation && |
| getDirectory().equals(((DirectorySourceLocation)object).getDirectory()); |
| } |
| |
| /** |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| return getDirectory().hashCode(); |
| } |
| |
| /** |
| * @see IJavaSourceLocation#getMemento() |
| */ |
| public String getMemento() throws CoreException { |
| Document doc = new DocumentImpl(); |
| Element node = doc.createElement("directorySourceLocation"); //$NON-NLS-1$ |
| doc.appendChild(node); |
| node.setAttribute("path", getDirectory().getAbsolutePath()); //$NON-NLS-1$ |
| |
| try { |
| return JavaLaunchConfigurationUtils.serializeDocument(doc); |
| } catch (IOException e) { |
| abort(MessageFormat.format(LaunchingMessages.getString("DirectorySourceLocation.Unable_to_create_memento_for_directory_source_location_{0}_1"), new String[] {getDirectory().getAbsolutePath()}), e); //$NON-NLS-1$ |
| } |
| // execution will not reach here |
| return null; |
| } |
| |
| /** |
| * @see IJavaSourceLocation#initializeFrom(String) |
| */ |
| public void initializeFrom(String memento) throws CoreException { |
| Exception ex = null; |
| try { |
| Element root = null; |
| DocumentBuilder parser = |
| DocumentBuilderFactory.newInstance().newDocumentBuilder(); |
| StringReader reader = new StringReader(memento); |
| InputSource source = new InputSource(reader); |
| root = parser.parse(source).getDocumentElement(); |
| |
| String path = root.getAttribute("path"); //$NON-NLS-1$ |
| if (isEmpty(path)) { |
| abort(LaunchingMessages.getString("DirectorySourceLocation.Unable_to_initialize_source_location_-_missing_directory_path_3"), null); //$NON-NLS-1$ |
| } else { |
| File dir = new File(path); |
| if (dir.exists() && dir.isDirectory()) { |
| setDirectory(dir); |
| } else { |
| abort(MessageFormat.format(LaunchingMessages.getString("DirectorySourceLocation.Unable_to_initialize_source_location_-_directory_does_not_exist__{0}_4"), new String[] {path}), null); //$NON-NLS-1$ |
| } |
| } |
| return; |
| } catch (ParserConfigurationException e) { |
| ex = e; |
| } catch (SAXException e) { |
| ex = e; |
| } catch (IOException e) { |
| ex = e; |
| } |
| abort(LaunchingMessages.getString("DirectorySourceLocation.Exception_occurred_initializing_source_location._5"), ex); //$NON-NLS-1$ |
| } |
| |
| private boolean isEmpty(String string) { |
| return string == null || string.length() == 0; |
| } |
| |
| /** |
| * Throws an internal error exception |
| */ |
| private void abort(String message, Throwable e) throws CoreException { |
| IStatus s = new Status(IStatus.ERROR, LaunchingPlugin.getUniqueIdentifier(), IJavaLaunchConfigurationConstants.ERR_INTERNAL_ERROR, message, e); |
| throw new CoreException(s); |
| } |
| } |