diff options
Diffstat (limited to 'org.eclipse.core.filebuffers/src/org/eclipse/core/internal/filebuffers/ResourceTextFileBuffer.java')
| -rw-r--r-- | org.eclipse.core.filebuffers/src/org/eclipse/core/internal/filebuffers/ResourceTextFileBuffer.java | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/org.eclipse.core.filebuffers/src/org/eclipse/core/internal/filebuffers/ResourceTextFileBuffer.java b/org.eclipse.core.filebuffers/src/org/eclipse/core/internal/filebuffers/ResourceTextFileBuffer.java deleted file mode 100644 index 08a363c50fd..00000000000 --- a/org.eclipse.core.filebuffers/src/org/eclipse/core/internal/filebuffers/ResourceTextFileBuffer.java +++ /dev/null @@ -1,346 +0,0 @@ -/********************************************************************** -Copyright (c) 2000, 2003 IBM Corp. and others. -All rights reserved. This program and the accompanying materials -are made available under the terms of the Common Public License v1.0 -which accompanies this distribution, and is available at -http://www.eclipse.org/legal/cpl-v10.html - -Contributors: - IBM Corporation - Initial implementation -**********************************************************************/ -package org.eclipse.core.internal.filebuffers; - -import java.io.BufferedReader; -import java.io.ByteArrayInputStream; -import java.io.IOException; -import java.io.InputStream; -import java.io.InputStreamReader; -import java.io.Reader; - -import org.eclipse.core.filebuffers.ITextFileBuffer; -import org.eclipse.core.resources.IFile; -import org.eclipse.core.resources.IResourceStatus; -import org.eclipse.core.runtime.CoreException; -import org.eclipse.core.runtime.IProgressMonitor; -import org.eclipse.core.runtime.IStatus; -import org.eclipse.core.runtime.QualifiedName; -import org.eclipse.core.runtime.Status; -import org.eclipse.core.runtime.SubProgressMonitor; - -import org.eclipse.jface.text.DocumentEvent; -import org.eclipse.jface.text.IDocument; -import org.eclipse.jface.text.IDocumentListener; - -/** - * - */ -public class ResourceTextFileBuffer extends ResourceFileBuffer implements ITextFileBuffer { - - - private class DocumentListener implements IDocumentListener { - - /* - * @see org.eclipse.jface.text.IDocumentListener#documentAboutToBeChanged(org.eclipse.jface.text.DocumentEvent) - */ - public void documentAboutToBeChanged(DocumentEvent event) { - } - - /* - * @see org.eclipse.jface.text.IDocumentListener#documentChanged(org.eclipse.jface.text.DocumentEvent) - */ - public void documentChanged(DocumentEvent event) { - fCanBeSaved= true; - removeFileBufferContentListeners(); - fManager.fireDirtyStateChanged(ResourceTextFileBuffer.this, fCanBeSaved); - } - } - - /** - * Reader chunk size. - */ - static final private int READER_CHUNK_SIZE= 2048; - /** - * Buffer size. - */ - static final private int BUFFER_SIZE= 8 * READER_CHUNK_SIZE; - /** - * Qualified name for the encoding key. - */ - static final private QualifiedName ENCODING_KEY= new QualifiedName(FileBuffersPlugin.PLUGIN_ID, "encoding"); //$NON-NLS-1$ - /** - * Constant for representing the ok status. This is considered a value object. - */ - static final private IStatus STATUS_OK= new Status(IStatus.OK, FileBuffersPlugin.PLUGIN_ID, IStatus.OK, "OK", null); - /** - * Constant for representing the error status. This is considered a value object. - */ - static final private IStatus STATUS_ERROR= new Status(IStatus.ERROR, FileBuffersPlugin.PLUGIN_ID, IStatus.INFO, "Error", null); - - - - /** The element's document */ - protected IDocument fDocument; - /** The encoding used to create the document from the storage or <code>null</code> for workbench encoding. */ - protected String fEncoding; - /** Internal document listener */ - protected IDocumentListener fDocumentListener= new DocumentListener(); - - - - public ResourceTextFileBuffer(TextFileBufferManager manager) { - super(manager); - } - - /* - * @see org.eclipse.core.buffer.text.IBufferedTextFile#getDocument() - */ - public IDocument getDocument() { - return fDocument; - } - - /* - * @see org.eclipse.core.buffer.text.IBufferedTextFile#getEncoding() - */ - public String getEncoding() { - return fEncoding; - } - - /* - * @see org.eclipse.core.buffer.text.IBufferedTextFile#setEncoding(java.lang.String) - */ - public void setEncoding(String encoding) { - fEncoding= encoding; - try { - fFile.setPersistentProperty(ENCODING_KEY, encoding); - } catch (CoreException x) { - handleCoreException(x); - } - } - - /* - * @see org.eclipse.core.buffer.text.IBufferedFile#getStatus() - */ - public IStatus getStatus() { - if (!isDisposed()) { - if (fStatus != null) - return fStatus; - return (fDocument == null ? STATUS_ERROR : STATUS_OK); - } - return STATUS_ERROR; - } - - /* - * @see org.eclipse.core.filebuffers.IFileBuffer#revert(org.eclipse.core.runtime.IProgressMonitor) - */ - public void revert(IProgressMonitor monitor) throws CoreException { - if (isDisposed()) - return; - - refreshFile(monitor); - - IDocument original= null; - IStatus status= null; - - try { - original= fManager.createEmptyDocument(fFile.getLocation()); - setDocumentContent(original, fFile.getContents(), fEncoding); - } catch (CoreException x) { - status= x.getStatus(); - } - - fStatus= status; - - if (original != null) { - - String originalContents= original.get(); - boolean replaceContents= !originalContents.equals(fDocument.get()); - - if (replaceContents) { - fManager.fireBufferContentAboutToBeReplaced(this); - fDocument.set(original.get()); - } - - if (fCanBeSaved) { - fCanBeSaved= false; - addFileBufferContentListeners(); - } - - if (replaceContents) - fManager.fireBufferContentReplaced(this); - - fManager.fireDirtyStateChanged(this, fCanBeSaved); - } - } - - /* - * @see org.eclipse.core.internal.filebuffers.FileBuffer#addFileBufferContentListeners() - */ - protected void addFileBufferContentListeners() { - if (fDocument != null) - fDocument.addDocumentListener(fDocumentListener); - } - - /* - * @see org.eclipse.core.internal.filebuffers.FileBuffer#removeFileBufferContentListeners() - */ - protected void removeFileBufferContentListeners() { - if (fDocument != null) - fDocument.removeDocumentListener(fDocumentListener); - } - - /* - * @see org.eclipse.core.internal.filebuffers.FileBuffer#initializeFileBufferContent(org.eclipse.core.runtime.IProgressMonitor) - */ - protected void initializeFileBufferContent(IProgressMonitor monitor) throws CoreException { - try { - fEncoding= fFile.getPersistentProperty(ENCODING_KEY); - fDocument= fManager.createEmptyDocument(fFile.getLocation()); - setDocumentContent(fDocument, fFile.getContents(), fEncoding); - } catch (CoreException x) { - fDocument= fManager.createEmptyDocument(fFile.getLocation()); - fStatus= x.getStatus(); - } - } - - /* - * @see org.eclipse.core.internal.filebuffers.FileBuffer#commitFileBufferContent(org.eclipse.core.runtime.IProgressMonitor, boolean) - */ - protected void commitFileBufferContent(IProgressMonitor monitor, boolean overwrite) throws CoreException { - try { - - String encoding= getEncoding(); - if (encoding == null) - encoding= fManager.getDefaultEncoding(); - - InputStream stream= new ByteArrayInputStream(fDocument.get().getBytes(encoding)); - - if (fFile.exists()) { - - if (!overwrite) - checkSynchronizationState(); - - - // here the file synchronizer should actually be removed and afterwards added again. However, - // we are already inside an operation, so the delta is sent AFTER we have added the listener - fFile.setContents(stream, overwrite, true, monitor); - // set synchronization stamp to know whether the file synchronizer must become active - fSynchronizationStamp= fFile.getModificationStamp(); - - // TODO if there is an annotation model update it here - - } else { - - try { - monitor.beginTask("Saving", 2000); //$NON-NLS-1$ - ContainerGenerator generator = new ContainerGenerator(fFile.getWorkspace(), fFile.getParent().getFullPath()); - generator.generateContainer(new SubProgressMonitor(monitor, 1000)); - fFile.create(stream, false, new SubProgressMonitor(monitor, 1000)); - } - finally { - monitor.done(); - } - } - - } catch (IOException x) { - IStatus s= new Status(IStatus.ERROR, FileBuffersPlugin.PLUGIN_ID, IStatus.OK, x.getMessage(), x); - throw new CoreException(s); - } - } - - /** - * Updates the element info to a change of the file content and sends out appropriate notifications. - */ - protected void handleFileContentChanged() { - if (isDisposed()) - return; - - IDocument document= fManager.createEmptyDocument(fFile.getLocation()); - IStatus status= null; - - try { - setDocumentContent(document, fFile.getContents(false), fEncoding); - } catch (CoreException x) { - status= x.getStatus(); - } - - String newContent= document.get(); - - if ( !newContent.equals(fDocument.get())) { - - fManager.fireBufferContentAboutToBeReplaced(this); - - removeFileBufferContentListeners(); - fDocument.set(newContent); - fCanBeSaved= false; - fSynchronizationStamp= fFile.getModificationStamp(); - fStatus= status; - addFileBufferContentListeners(); - - fManager.fireBufferContentReplaced(this); - - } else { - - removeFileBufferContentListeners(); - fCanBeSaved= false; - fSynchronizationStamp= fFile.getModificationStamp(); - fStatus= status; - addFileBufferContentListeners(); - - fManager.fireDirtyStateChanged(this, fCanBeSaved); - } - } - - /** - * Intitializes the given document with the given stream using the given encoding. - * - * @param document the document to be initialized - * @param contentStream the stream which delivers the document content - * @param encoding the character encoding for reading the given stream - * @exception CoreException if the given stream can not be read - */ - private void setDocumentContent(IDocument document, InputStream contentStream, String encoding) throws CoreException { - Reader in= null; - try { - - if (encoding == null) - encoding= fManager.getDefaultEncoding(); - - in= new BufferedReader(new InputStreamReader(contentStream, encoding), BUFFER_SIZE); - StringBuffer buffer= new StringBuffer(BUFFER_SIZE); - char[] readBuffer= new char[READER_CHUNK_SIZE]; - int n= in.read(readBuffer); - while (n > 0) { - buffer.append(readBuffer, 0, n); - n= in.read(readBuffer); - } - - document.set(buffer.toString()); - - } catch (IOException x) { - String msg= x.getMessage() == null ? "" : x.getMessage(); //$NON-NLS-1$ - IStatus s= new Status(IStatus.ERROR, FileBuffersPlugin.PLUGIN_ID, IStatus.OK, msg, x); - throw new CoreException(s); - } finally { - if (in != null) { - try { - in.close(); - } catch (IOException x) { - } - } - } - } - - /** - * Checks whether the given file is synchronized with the the local file system. - * If the file has been changed, a <code>CoreException</code> is thrown. - * - * @param file the file to check - * @exception CoreException if file has been changed on the file system - */ - private void checkSynchronizationState() throws CoreException { - if (!fFile.isSynchronized(IFile.DEPTH_ZERO)) { - Status status= new Status(IStatus.ERROR, FileBuffersPlugin.PLUGIN_ID, IResourceStatus.OUT_OF_SYNC_LOCAL, "out of sync", null); - throw new CoreException(status); - } - } -} |