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BaseDirectory.java
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BaseDirectory.java
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/*
* MIT License
*
* Copyright (c) 2020-present Cloudogu GmbH and Contributors
*
* 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 NONINFRINGEMENT. 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 sonia.scm;
import com.google.common.base.Strings;
import sonia.scm.util.SystemUtil;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Map;
import java.util.Properties;
/**
* Determines the base directory for SCM-Manager.
* This class should not be used directory, use {@link SCMContextProvider#getBaseDirectory()} instead.
*
* @since 2.0.0
*/
final class BaseDirectory {
/** Environment variable for the SCM-Manager base directory */
static final String ENVIRONMENT_VARIABLE = "SCM_HOME";
/** Java system property for the SCM-Manager base directory */
static final String SYSTEM_PROPERTY = "scm.home";
/** Classpath resource for the SCM-Manager base directory */
@SuppressWarnings("java:S1075") // it is already configurable
static final String CLASSPATH_RESOURCE = "/scm.properties";
/** Property name in resource file */
static final String RESOURCE_PROPERTY = "scm.home";
private final Platform platform;
private final String classPathResource;
private final Map<String,String> environment;
private final Properties systemProperties;
BaseDirectory(Platform platform, String classPathResource, Map<String, String> environment, Properties systemProperties) {
this.platform = platform;
this.classPathResource = classPathResource;
this.environment = environment;
this.systemProperties = systemProperties;
}
/**
* Returns the determined base directory.
*
* @return base directory
*/
@SuppressWarnings("java:S5304") // it is safe to use environment in this case
static Path get() {
return new BaseDirectory(
SystemUtil.getPlatform(),
CLASSPATH_RESOURCE,
System.getenv(),
System.getProperties()
).find();
}
Path find() {
String directory = getFromResource();
if (Strings.isNullOrEmpty(directory)) {
directory = getFromSystemProperty();
}
if (Strings.isNullOrEmpty(directory)) {
directory = getFromEnvironmentVariable();
}
if (Strings.isNullOrEmpty(directory)) {
directory = getOsSpecificDefault();
}
return Paths.get(directory);
}
private String getFromResource() {
try (InputStream input = BasicContextProvider.class.getResourceAsStream(classPathResource))
{
if (input != null)
{
Properties properties = new Properties();
properties.load(input);
return properties.getProperty(RESOURCE_PROPERTY);
}
}
catch (IOException ex)
{
throw new ConfigurationException("could not load properties form resource " + CLASSPATH_RESOURCE, ex);
}
return null;
}
private String getFromEnvironmentVariable() {
return environment.get(ENVIRONMENT_VARIABLE);
}
private String getFromSystemProperty() {
return systemProperties.getProperty(SYSTEM_PROPERTY);
}
private String getOsSpecificDefault() {
if (platform.isMac()) {
return getOsxDefault();
} else if (platform.isWindows()) {
return getWindowsDefault();
}
return systemProperties.getProperty("user.home") + "/.scm";
}
private String getOsxDefault() {
return systemProperties.getProperty("user.home") + "/Library/Application Support/SCM-Manager";
}
private String getWindowsDefault() {
return environment.get("APPDATA") + "\\SCM-Manager";
}
}