diff options
Diffstat (limited to 'bundles/org.eclipse.team.core/src/org/eclipse/team/core/subscribers/ContentComparisonCriteria.java')
-rw-r--r-- | bundles/org.eclipse.team.core/src/org/eclipse/team/core/subscribers/ContentComparisonCriteria.java | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/subscribers/ContentComparisonCriteria.java b/bundles/org.eclipse.team.core/src/org/eclipse/team/core/subscribers/ContentComparisonCriteria.java deleted file mode 100644 index f5b4ac8ec..000000000 --- a/bundles/org.eclipse.team.core/src/org/eclipse/team/core/subscribers/ContentComparisonCriteria.java +++ /dev/null @@ -1,173 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2003 IBM Corporation 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 API and implementation - *******************************************************************************/ -package org.eclipse.team.core.subscribers; - -import java.io.BufferedInputStream; -import java.io.IOException; -import java.io.InputStream; - -import org.eclipse.core.resources.IStorage; -import org.eclipse.core.runtime.CoreException; -import org.eclipse.core.runtime.IProgressMonitor; -import org.eclipse.team.core.TeamException; -import org.eclipse.team.core.sync.IRemoteResource; -import org.eclipse.team.internal.core.Policy; - -/** - * A content comparison criteria that knows how to compare the content of <code>IStorage</code> and - * <code>IRemoteResource</code> objects. The content comparison can be configured to ignore or - * consider whitespace. - * - * @see org.eclipse.team.core.subscribers.ComparisonCriteria - */ -public class ContentComparisonCriteria extends ComparisonCriteria { - - private boolean ignoreWhitespace = false; - - final public static String ID_IGNORE_WS = "org.eclipse.team.comparisoncriteria.content.ignore"; //$NON-NLS-1$ - final public static String ID_DONTIGNORE_WS = "org.eclipse.team.comparisoncriteria.content"; //$NON-NLS-1$ - - public String getName() { - return "Comparing content" + (ignoreWhitespace ? " ignore whitespace": ""); - } - - public String getId() { - if(ignoreWhitespace) { - return ID_IGNORE_WS; - } else { - return ID_DONTIGNORE_WS; - } - } - - public ContentComparisonCriteria(ComparisonCriteria[] preConditions, boolean ignoreWhitespace) { - super(preConditions); - this.ignoreWhitespace = ignoreWhitespace; - } - - /** - * Helper methods for comparisons that returns true if the resource contents are the same. - * - * If timestampDiff is true then the timestamps don't differ and there's no point checking the - * contents. - */ - public boolean compare(Object e1, Object e2, IProgressMonitor monitor) throws TeamException { - try { - monitor.beginTask(null, 100); - if(checkPreConditions(e1, e2, Policy.subMonitorFor(monitor, 10))) { - return true; - } - - InputStream is1 = null; - InputStream is2 = null; - try { - is1 = getContents(e1, Policy.subMonitorFor(monitor, 45)); - is2 = getContents(e2, Policy.subMonitorFor(monitor, 45)); - return contentsEqual(is1, is2, shouldIgnoreWhitespace()); - } finally { - try { - try { - if (is1 != null) { - is1.close(); - } - } finally { - if (is2 != null) { - is2.close(); - } - } - } catch (IOException e) { - // Ignore - } - } - } finally { - monitor.done(); - } - } - - protected boolean shouldIgnoreWhitespace() { - return ignoreWhitespace; - } - - /** - * Returns <code>true</code> if both input streams byte contents is identical. - * - * @param input1 first input to contents compare - * @param input2 second input to contents compare - * @return <code>true</code> if content is equal - */ - private boolean contentsEqual(InputStream is1, InputStream is2, boolean ignoreWhitespace) { - try { - if (is1 == is2) - return true; - - if (is1 == null && is2 == null) // no byte contents - return true; - - if (is1 == null || is2 == null) // only one has contents - return false; - - while (true) { - int c1 = is1.read(); - while (shouldIgnoreWhitespace() && isWhitespace(c1)) c1 = is1.read(); - int c2 = is2.read(); - while (shouldIgnoreWhitespace() && isWhitespace(c2)) c2 = is2.read(); - if (c1 == -1 && c2 == -1) - return true; - if (c1 != c2) - break; - - } - } catch (IOException ex) { - } finally { - try { - try { - if (is1 != null) { - is1.close(); - } - } finally { - if (is2 != null) { - is2.close(); - } - } - } catch (IOException e) { - // Ignore - } - } - return false; - } - - private boolean isWhitespace(int c) { - if (c == -1) return false; - return Character.isWhitespace((char)c); - } - - private InputStream getContents(Object resource, IProgressMonitor monitor) throws TeamException { - try { - if (resource instanceof IStorage) { - return new BufferedInputStream(((IStorage) resource).getContents()); - } else if(resource instanceof IRemoteResource) { - IRemoteResource remote = (IRemoteResource)resource; - if (!remote.isContainer()) { - return new BufferedInputStream(remote.getContents(monitor)); - } - } - return null; - } catch (CoreException e) { - throw TeamException.asTeamException(e); - } - } - - /* (non-Javadoc) - * @see org.eclipse.team.core.subscribers.ComparisonCriteria#usesFileContents() - */ - public boolean usesFileContents() { - return true; - } -} |