org.dbmaintain.util.FileUtils Maven / Gradle / Ivy
/*
* Copyright DbMaintain.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.dbmaintain.util;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
/**
* @author Tim Ducheyne
* @author Filip Neven
*/
public class FileUtils {
/**
* Creates an URL that points to the given file.
*
* @param file The file, not null
* @return The URL to the file, not null
*/
public static URL getUrl(File file) {
try {
// The file is first converted to an URI and then to an URL, since this way characters
// that are illegal in an URL are automatically escaped.
return file.toURI().toURL();
} catch (MalformedURLException e) {
throw new DbMaintainException("Unable to create URL for file " + file.getName(), e);
}
}
/**
* Creates a file and write the given content to it.
* Note: the content reader is not closed.
*
* @param file The new file to create, not null
* @param contentReader The stream with the content for the file, not null
*/
public static void createFile(File file, Reader contentReader) throws IOException {
Writer writer = null;
try {
writer = new BufferedWriter(new FileWriter(file, false));
char[] buffer = new char[8192];
int nrOfChars;
while ((nrOfChars = contentReader.read(buffer)) != -1) {
writer.write(buffer, 0, nrOfChars);
}
} finally {
if (writer != null) {
writer.close();
}
}
}
/**
* Creates a file and write the given content to it.
*
* @param file The new file to create, not null
* @param content The content for the file, not null
*/
public static void createFile(File file, String content) throws IOException {
Writer writer = null;
try {
writer = new BufferedWriter(new FileWriter(file, false));
writer.write(content);
} finally {
if (writer != null) {
writer.close();
}
}
}
}