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/*
* Copyright (C) 2001-2013 Michael Fuchs
*
* This file is part of herold.
*
* herold is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* herold is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with herold. If not, see <http://www.gnu.org/licenses/>.
*/
package org.dbdoclet.service;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.dbdoclet.ServiceException;
public class ReplaceServices {
public static String replaceAll(String buffer, String regexp, String subst) {
if (buffer == null) {
throw new IllegalArgumentException("The argument buffer must not be null!");
}
if (regexp == null) {
throw new IllegalArgumentException("The argument regexp must not be null!");
}
if (subst == null) {
throw new IllegalArgumentException("The argument subst must not be null!");
}
Pattern pattern = Pattern.compile(regexp);
Matcher matcher = pattern.matcher(buffer);
return matcher.replaceAll(subst);
}
public static String replaceLines(String buffer, String regexp, String subst)
throws IOException,
ServiceException {
if (buffer == null) {
throw new IllegalArgumentException("The argument buffer must not be null!");
}
if (regexp == null) {
throw new IllegalArgumentException("The argument regexp must not be null!");
}
if (subst == null) {
throw new IllegalArgumentException("The argument subst must not be null!");
}
BufferedReader reader = null;
PrintWriter writer = null;
StringWriter out = new StringWriter();
try {
Pattern pattern = Pattern.compile(regexp);
Matcher matcher;
reader = new BufferedReader(new StringReader(buffer));
writer = new PrintWriter(out);
String line;
while ((line = reader.readLine()) != null) {
matcher = pattern.matcher(line);
if (matcher.find()) {
writer.println(subst);
} else {
writer.println(line);
}
}
reader.close();
writer.close();
return out.toString();
} catch (Exception oops) {
throw new ServiceException(oops);
} finally {
try {
if (reader != null) {
reader.close();
}
if (writer != null) {
writer.close();
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
public static void replaceLines(File file, String regexp, String subst)
throws IOException,
ServiceException {
if (file == null) {
throw new IllegalArgumentException("The argument file must not be null!");
}
if (regexp == null) {
throw new IllegalArgumentException("The argument regexp must not be null!");
}
if (subst == null) {
throw new IllegalArgumentException("The argument subst must not be null!");
}
PrintWriter writer = null;
BufferedReader reader = null;
try {
Pattern pattern = Pattern.compile(regexp);
Matcher matcher;
File tmpFile = File.createTempFile("rsrl",".tmp");
writer = new PrintWriter(new FileWriter(tmpFile));
reader = new BufferedReader(new FileReader(file));
String line;
while ((line = reader.readLine()) != null) {
matcher = pattern.matcher(line);
if (matcher.find()) {
writer.println(subst);
} else {
writer.println(line);
}
}
reader.close();
writer.close();
if (file.exists()) {
file.delete();
}
FileServices.copyFileToFile(tmpFile, file);
} catch (Exception oops) {
throw new ServiceException(oops);
} finally {
try {
if (reader != null) {
reader.close();
}
if (writer != null) {
writer.close();
}
} catch (IOException ioe) {
ioe.printStackTrace();
}
}
}
}
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