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/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
package org.eclipse.search.internal.core.text;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.search.internal.core.SearchScope;
import org.eclipse.search.internal.ui.SearchMessages;
import org.eclipse.search.internal.ui.util.StringMatcher;
/**
* A special text search scope that take file extensions into account.
*/
public class TextSearchScope extends SearchScope {
private static class WorkspaceScope extends TextSearchScope {
private WorkspaceScope() {
super(SearchMessages.getString("WorkspaceScope")); //$NON-NLS-1$
}
public void add(IResource element) {
// do nothing
}
/**
* @see ISearchScope#encloses(Object)
*/
public boolean encloses(IResource element) {
if (element instanceof IFile && skipFile((IFile)element))
return false;
return true;
}
}
private Set fExtensions= new HashSet(3);
/**
* Returns a new Workbench scope.
*/
public static TextSearchScope newWorkspaceScope() {
return new WorkspaceScope();
}
public TextSearchScope(String description) {
super(description);
}
public TextSearchScope(String description, IResource[] resources) {
super(description, resources);
}
/**
* Adds an extension to the scope.
*/
public void addExtension(String extension) {
fExtensions.add(new StringMatcher(extension, false, false));
}
/**
* Adds all string patterns contained in <code>extensions</code> to this
* scope. The allowed pattern characters are <code>*</code> for any character
* and <code>?</code> for one character.
*/
public void addExtensions(Set extensions) {
if (extensions == null)
return;
Iterator iter= extensions.iterator();
while (iter.hasNext()) {
Object obj= iter.next();
if (obj instanceof String)
addExtension((String)obj);
}
}
/*
* Implements method from ISearchScope
*/
public boolean encloses(IResource element) {
if (element instanceof IFile && skipFile((IFile)element))
return false;
return super.encloses(element);
}
boolean skipFile(IFile file) {
if (file != null) {
Iterator iter= fExtensions.iterator();
while (iter.hasNext()) {
if (((StringMatcher)iter.next()).match(file.getName()))
return false;
}
}
return true;
}
}
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