org.nd4j.common.util.ND4JFileUtils Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015-2018 Skymind, Inc.
*
* This program and the accompanying materials are made available under the
* terms of the Apache License, Version 2.0 which is available at
* https://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.
*
* SPDX-License-Identifier: Apache-2.0
******************************************************************************/
package org.nd4j.common.util;
import org.nd4j.common.config.ND4JSystemProperties;
import java.io.File;
import java.io.IOException;
/**
* Utilities for working with temporary files
*
* @author Alex Black
*/
public class ND4JFileUtils {
private ND4JFileUtils(){ }
/**
* Create a temporary file in the location specified by {@link ND4JSystemProperties#ND4J_TEMP_DIR_PROPERTY} if set,
* or the default temporary directory (usually specified by java.io.tmpdir system property)
* @param prefix Prefix for generating file's name; must be at least 3 characeters
* @param suffix Suffix for generating file's name; may be null (".tmp" will be used if null)
* @return A temporary file
*/
public static File createTempFile(String prefix, String suffix) {
String p = System.getProperty(ND4JSystemProperties.ND4J_TEMP_DIR_PROPERTY);
try {
if (p == null || p.isEmpty()) {
return File.createTempFile(prefix, suffix);
} else {
return File.createTempFile(prefix, suffix, new File(p));
}
} catch (IOException e){
throw new RuntimeException("Error creating temporary file", e);
}
}
/**
* Get the temporary directory. This is the location specified by {@link ND4JSystemProperties#ND4J_TEMP_DIR_PROPERTY} if set,
* or the default temporary directory (usually specified by java.io.tmpdir system property)
* @return Temporary directory
*/
public static File getTempDir(){
String p = System.getProperty(ND4JSystemProperties.ND4J_TEMP_DIR_PROPERTY);
if(p == null || p.isEmpty()){
return new File(System.getProperty("java.io.tmpdir"));
} else {
return new File(p);
}
}
}