/***********************************************************************************************************************
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.testutils;
import java.io.BufferedOutputStream;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
public class TestFileUtils {
private static final String FILE_PREFIX = "stratosphere_test_";
private static final String FILE_SUFFIX = ".tmp";
public static String createTempFile(long bytes) throws IOException {
File f = File.createTempFile(FILE_PREFIX, FILE_SUFFIX);
f.deleteOnExit();
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(f));
try {
for (; bytes > 0; bytes--) {
out.write(0);
}
} finally {
out.close();
}
return f.toURI().toString();
}
public static String createTempFileInDirectory(String dir, String contents) throws IOException {
File f;
do {
f = new File(dir + "/" + randomFileName());
} while (f.exists());
f.getParentFile().mkdirs();
f.createNewFile();
f.deleteOnExit();
BufferedWriter out = new BufferedWriter(new FileWriter(f));
try {
out.write(contents);
} finally {
out.close();
}
return f.toURI().toString();
}
public static String createTempFile(String contents) throws IOException {
File f = File.createTempFile(FILE_PREFIX, FILE_SUFFIX);
f.deleteOnExit();
BufferedWriter out = new BufferedWriter(new FileWriter(f));
try {
out.write(contents);
} finally {
out.close();
}
return f.toURI().toString();
}
// ------------------------------------------------------------------------
public static String createTempFileDir(long ... bytes) throws IOException {
File tempDir = new File(System.getProperty("java.io.tmpdir"));
File f = null;
do {
f = new File(tempDir, randomFileName());
} while (f.exists());
f.mkdirs();
f.deleteOnExit();
for (long l : bytes) {
File child = new File(f, randomFileName());
child.deleteOnExit();
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(child));
try {
for (; l > 0; l--) {
out.write(0);
}
} finally {
out.close();
}
}
return f.toURI().toString();
}
public static String createTempFileDir(String ... contents) throws IOException {
return createTempFileDirExtension(FILE_SUFFIX, contents);
}
public static String createTempFileDirExtension(String fileExtension, String ... contents ) throws IOException {
File tempDir = new File(System.getProperty("java.io.tmpdir"));
File f = null;
do {
f = new File(tempDir, randomFileName(FILE_SUFFIX));
} while (f.exists());
f.mkdirs();
f.deleteOnExit();
for (String s : contents) {
File child = new File(f, randomFileName(fileExtension));
child.deleteOnExit();
BufferedWriter out = new BufferedWriter(new FileWriter(child));
try {
out.write(s);
} finally {
out.close();
}
}
return f.toURI().toString();
}
public static String randomFileName() {
return randomFileName(FILE_SUFFIX);
}
public static String randomFileName(String fileSuffix) {
return FILE_PREFIX + ((int) (Math.random() * Integer.MAX_VALUE)) + fileSuffix;
}
// ------------------------------------------------------------------------
private TestFileUtils() {}
}