io.lenar.props.file.PropFile Maven / Gradle / Ivy
/**
* The MIT License (MIT)
*
* Copyright (c) 2019 Lenar Badretdinov
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package io.lenar.props.file;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URL;
import java.util.Properties;
public class PropFile {
private static final Logger log = LoggerFactory.getLogger(PropFile.class);
private static final String USER_HOME_DIR = System.getProperty("user.home");
private final File file;
private Properties properties;
public PropFile(String fileName) {
this.file = getFile(fileName);
load();
}
public Properties properties() {
Properties newProps = new Properties();
newProps.putAll(this.properties);
return newProps;
}
private void load() {
Properties newProps = new Properties();
if (this.file != null) {
try (FileInputStream inputUserFileStream = new FileInputStream(this.file)) {
newProps.load(inputUserFileStream);
} catch (IOException ex) {
log.warn("Failed to load property file: {}}", this.file.toURI());
}
}
this.properties = newProps;
}
private File getFile(String fileName) {
ClassLoader classLoader = getClass().getClassLoader();
URL url = classLoader.getResource(fileName);
if (url != null) {
return new File(url.getFile());
}
File file = new File(USER_HOME_DIR, fileName).getAbsoluteFile();
if (!file.exists()) {
log.warn("Couldn't find property file {}", fileName);
}
return file.exists() ? file : null;
}
}