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/*
* (c) Copyright IBM Corp. 2000, 2002.
* All Rights Reserved.
*/
package org.eclipse.search.internal.core.text;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.core.runtime.OperationCanceledException;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.Status;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.search.ui.SearchUI;
import org.eclipse.search.internal.core.ISearchScope;
import org.eclipse.search.internal.ui.SearchMessages;
import org.eclipse.search.internal.ui.SearchPlugin;
import org.eclipse.search.internal.ui.util.StringMatcher;
/**
* The visitor that does the actual work.
*/
public class TextSearchVisitor extends TypedResourceVisitor {
protected static final int fgLF= '\n';
protected static final int fgCR= '\r';
private String fPattern;
private ISearchScope fScope;
private ITextSearchResultCollector fCollector;
private String fOptions;
private IEditorPart[] fDirtyEditors;
private IProgressMonitor fProgressMonitor;
private StringMatcher fMatcher;
private String fErrorMessage;
private Integer[] fMessageFormatArgs;
private int fNumberOfScannedFiles;
private int fNumberOfFilesToScan;
private long fLastUpdateTime;
protected int fPushbackChar;
protected boolean fPushback;
public TextSearchVisitor(String pattern, String options, ISearchScope scope, ITextSearchResultCollector collector, MultiStatus status, int fileCount) {
super(status);
fPattern= pattern;
fScope= scope;
fCollector= collector;
fPushback= false;
if (options != null)
fOptions= options;
else
fOptions= ""; //$NON-NLS-1$
fProgressMonitor= collector.getProgressMonitor();
fMatcher= new StringMatcher(pattern, options.indexOf('i') != -1, false);
fNumberOfScannedFiles= 0;
fNumberOfFilesToScan= fileCount;
fMessageFormatArgs= new Integer[] { new Integer(0), new Integer(fileCount) };
}
public void process(Collection projects) {
Iterator i= projects.iterator();
while(i.hasNext()) {
IProject project= (IProject)i.next();
try {
project.accept(this);
} catch (CoreException ex) {
addToStatus(ex);
}
}
}
/**
* Returns an array of all editors that have an unsaved content. If the identical content is
* presented in more than one editor, only one of those editor parts is part of the result.
*
* @return an array of all dirty editor parts.
*/
public static IEditorPart[] getDirtyEditors() {
Set inputs= new HashSet();
List result= new ArrayList(0);
IWorkbench workbench= SearchPlugin.getDefault().getWorkbench();
IWorkbenchWindow[] windows= workbench.getWorkbenchWindows();
for (int i= 0; i < windows.length; i++) {
IWorkbenchPage[] pages= windows[i].getPages();
for (int x= 0; x < pages.length; x++) {
IEditorPart[] editors= pages[x].getDirtyEditors();
for (int z= 0; z < editors.length; z++) {
IEditorPart ep= editors[z];
IEditorInput input= ep.getEditorInput();
if (!inputs.contains(input)) {
inputs.add(input);
result.add(ep);
}
}
}
}
return (IEditorPart[])result.toArray(new IEditorPart[result.size()]);
}
protected boolean visitFile(IFile file) throws CoreException {
if (! fScope.encloses(file))
return false;
// Exclude to derived resources
if (file.isDerived())
return false;
if (fPattern.length() == 0) {
fCollector.accept(file, "", -1, 0, -1); //$NON-NLS-1$
updateProgressMonitor();
return true;
}
try {
BufferedReader reader= null;
ITextEditor editor= findDirtyEditorFor(file);
if (editor != null) {
String s= editor.getDocumentProvider().getDocument(editor.getEditorInput()).get();
reader= new BufferedReader(new StringReader(s));
} else {
InputStream stream= file.getContents(false);
reader= new BufferedReader(new InputStreamReader(stream, ResourcesPlugin.getEncoding()));
}
int lineCounter= 1;
int charCounter=0;
boolean eof= false;
try {
while (!eof) {
StringBuffer sb= new StringBuffer(200);
int eolStrLength= readLine(reader, sb);
int lineLength= sb.length();
int start= 0;
eof= eolStrLength == -1;
String line= sb.toString();
StringMatcher.Position match;
while (start < lineLength) {
if ((match= fMatcher.find(line, start, lineLength)) != null) {
start= charCounter + match.getStart();
int length= match.getEnd() - match.getStart();
fCollector.accept(file, line.trim(), start, length, lineCounter);
start= match.getEnd();
}
else // no match in this line
start= lineLength;
}
charCounter+= lineLength + eolStrLength;
lineCounter++;
if (fProgressMonitor.isCanceled())
throw new OperationCanceledException(SearchMessages.getString("TextSearchVisitor.canceled")); //$NON-NLS-1$
}
} finally {
if (reader != null)
reader.close();
}
} catch (IOException e) {
String message= SearchMessages.getFormattedString("TextSearchVisitor.error", file.getFullPath()); //$NON-NLS-1$
throw new CoreException(new Status(IStatus.ERROR, SearchUI.PLUGIN_ID, Platform.PLUGIN_ERROR, message, e));
}
finally {
updateProgressMonitor();
}
return true;
}
private void updateProgressMonitor() {
fNumberOfScannedFiles++;
if (fNumberOfScannedFiles < fNumberOfFilesToScan) {
if (System.currentTimeMillis() - fLastUpdateTime > 1000) {
fMessageFormatArgs[0]= new Integer(fNumberOfScannedFiles+1);
fProgressMonitor.setTaskName(SearchMessages.getFormattedString("TextSearchVisitor.scanning", fMessageFormatArgs)); //$NON-NLS-1$
fLastUpdateTime= System.currentTimeMillis();
}
}
fProgressMonitor.worked(1);
if (fProgressMonitor.isCanceled())
throw new OperationCanceledException(SearchMessages.getString("TextSearchVisitor.canceled")); //$NON-NLS-1$
}
private ITextEditor findDirtyEditorFor(IFile file) {
int i= 0;
while (i < fDirtyEditors.length) {
IEditorPart dirtyEditor= fDirtyEditors[i];
IEditorInput input= dirtyEditor.getEditorInput();
if (input instanceof IFileEditorInput && dirtyEditor instanceof ITextEditor)
if (((IFileEditorInput)input).getFile().equals(file))
return (ITextEditor)dirtyEditor;
i++;
}
return null;
}
protected int readLine(BufferedReader reader, StringBuffer sb) throws IOException {
int ch= -1;
if (fPushback) {
ch= fPushbackChar;
fPushback= false;
}
else
ch= reader.read();
while (ch >= 0) {
if (ch == fgLF)
return 1;
if (ch == fgCR) {
ch= reader.read();
if (ch == fgLF)
return 2;
else {
fPushbackChar= ch;
fPushback= true;
return 1;
}
}
sb.append((char)ch);
ch= reader.read();
}
return -1;
}
/*
* @see IResourceVisitor#visit(IResource)
*/
public boolean visit(IResource resource) {
fDirtyEditors= getDirtyEditors();
return super.visit(resource);
}
}
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