/******************************************************************************
* Copyright (C) 2013 Fabio Zadrozny
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Fabio Zadrozny <fabiofz@gmail.com> - initial API and implementation
******************************************************************************/
package org.python.pydev.shared_core.actions;
import java.util.List;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.ITextSelection;
import org.python.pydev.shared_core.string.FastStringBuffer;
import org.python.pydev.shared_core.string.StringUtils;
import org.python.pydev.shared_core.string.TextSelectionUtils;
import org.python.pydev.shared_core.structure.Tuple;
public class LineUncommentAction {
private TextSelectionUtils ps;
private String commentPattern;
private int spacesInStart;
public LineUncommentAction(TextSelectionUtils ps, String commentPattern, int spacesInStart) {
this.ps = ps;
this.commentPattern = commentPattern;
this.spacesInStart = spacesInStart;
}
public FastStringBuffer uncommentLines(String selectedText) {
List<String> ret = StringUtils.splitInLines(selectedText);
FastStringBuffer strbuf = new FastStringBuffer(selectedText.length() + (ret.size() * 2));
String spacesInStartComment = "";
if (spacesInStart > 0) {
spacesInStartComment = StringUtils.createSpaceString(spacesInStart);
}
String expectedStart = this.commentPattern + spacesInStartComment;
boolean allStartWithSpaces = true;
for (String string : ret) {
if (!StringUtils.leftTrim(string).startsWith(expectedStart)) {
expectedStart = this.commentPattern;
allStartWithSpaces = false;
break;
}
}
int expectedStartLength = expectedStart.length();
if (allStartWithSpaces) {
for (String line : ret) {
int i = line.indexOf(expectedStart);
strbuf.append(line.substring(0, i));
strbuf.append(line.substring(i + expectedStartLength));
}
} else {
for (String line : ret) {
if (StringUtils.leftTrim(line).startsWith(expectedStart)) {
int i = line.indexOf(expectedStart);
strbuf.append(line.substring(0, i));
strbuf.append(line.substring(i + expectedStartLength));
} else {
strbuf.append(line);
}
}
}
return strbuf;
}
public Tuple<Integer, Integer> execute() throws BadLocationException {
// What we'll be replacing the selected text with
// If they selected a partial line, count it as a full one
ps.selectCompleteLine();
String selectedText = ps.getSelectedText();
FastStringBuffer strbuf = uncommentLines(selectedText);
ITextSelection txtSel = ps.getTextSelection();
int start = txtSel.getOffset();
int len = txtSel.getLength();
String replacement = strbuf.toString();
// Replace the text with the modified information
ps.getDoc().replace(start, len, replacement);
return new Tuple<Integer, Integer>(start, replacement.length());
}
}