/*******************************************************************************
* Copyright (c) 2012 VMware, Inc.
* 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:
* VMware, Inc. - initial API and implementation
*******************************************************************************/
package org.springframework.ide.eclipse.internal.bestpractices.springiderules;
import java.io.BufferedReader;
import java.io.FileReader;
/**
* Utility method(s) for use by Spring IDE rules.
* @author Wesley Coelho
* @author Leo Dos Santos
* @author Christian Dupuis
*/
public class RuleUtil {
/**
* Returns the specified lines of a given file.
* @param filePath the path to the file to be opened
* @param startLineNumber The starting line number of the content to be returned
* @param endLineNumber The ending line number of the content to be returned
* @return a string containing the specified lines in the given file
* @throws java.io.IOException on IO errors
*/
public static String getFileLines(String filePath, int startLineNumber, int endLineNumber) throws java.io.IOException {
BufferedReader reader = new BufferedReader(new FileReader(filePath));
StringBuffer requestedLines = new StringBuffer();
int currLineNum = 1;
while(reader.ready()) {
String currLineStr = reader.readLine();
if (currLineNum >= startLineNumber) {
requestedLines.append(currLineStr + "\n");
}
if (currLineNum > endLineNumber) {
break;
}
currLineNum++;
}
reader.close();
return requestedLines.toString();
}
}