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Jodd Core tools and huge number of utilities.
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.util;
import java.io.File;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.ArrayList;
/**
* System utilities.
*/
public class SystemUtil {
// ---------------------------------------------------------------- properties
/**
* Get system property. If key is not available, returns the default value.
*/
public static String get(final String key, String def) {
if (key.isEmpty()) {
throw new IllegalArgumentException("key must not be empty.");
}
String value = null;
try {
if (System.getSecurityManager() == null) {
value = System.getProperty(key);
} else {
value = AccessController.doPrivileged(new PrivilegedAction() {
@Override
public String run() {
return System.getProperty(key);
}
});
}
} catch (Exception ignore) {
}
if (value == null) {
return def;
}
return value;
}
// ---------------------------------------------------------------- unsafe
// IMPORTANT - order of declaration here is important! we need to detect
// first the Android, and then to check for the unsafe field;
// because `hasUnsafe0` method relies on the `isHostAndroid` information.
private static final boolean IS_ANDROID = isAndroid0();
private static final boolean HAS_UNSAFE = hasUnsafe0();
/**
* Returns true if system has the Unsafe.
*/
public static boolean hasUnsafe() {
return HAS_UNSAFE;
}
private static boolean hasUnsafe0() {
if (isHostAndroid()) {
return false;
}
try {
return PlatformInternal.hasUnsafe();
}
catch (Throwable t) {
return false;
}
}
// ---------------------------------------------------------------- android
/**
* Returns true if system is android.
*/
public static boolean isHostAndroid() {
return IS_ANDROID;
}
private static boolean isAndroid0() {
try {
Class.forName("android.app.Application", false, ClassLoaderUtil.getSystemClassLoader());
return true;
}
catch (Exception e) {
return false;
}
}
// ---------------------------------------------------------------- properties
public static final String USER_DIR = "user.dir";
public static final String USER_NAME = "user.name";
public static final String USER_HOME = "user.home";
public static final String JAVA_HOME = "java.home";
public static final String TEMP_DIR = "java.io.tmpdir";
public static final String OS_NAME = "os.name";
public static final String OS_VERSION = "os.version";
public static final String JAVA_VERSION = "java.version";
public static final String JAVA_SPECIFICATION_VERSION = "java.specification.version";
public static final String JAVA_VENDOR = "java.vendor";
public static final String JAVA_CLASSPATH = "java.class.path";
public static final String PATH_SEPARATOR = "path.separator";
public static final String HTTP_PROXY_HOST = "http.proxyHost";
public static final String HTTP_PROXY_PORT = "http.proxyPort";
public static final String HTTP_PROXY_USER = "http.proxyUser";
public static final String HTTP_PROXY_PASSWORD = "http.proxyPassword";
public static final String FILE_ENCODING = "file.encoding";
public static final String SUN_BOOT_CLASS_PATH = "sun.boot.class.path";
private static int javaVersionNumber;
private static final String WORKING_FOLDER;
static {
// determine the Java version by looking at available classes.
try {
// 1.0
javaVersionNumber = 10;
Class.forName("java.lang.Void");
// 1.1
javaVersionNumber++;
Class.forName("java.lang.ThreadLocal");
// 1.2
javaVersionNumber++;
Class.forName("java.lang.StrictMath");
// 1.3
javaVersionNumber++;
Class.forName("java.lang.CharSequence");
//1.4
javaVersionNumber++;
Class.forName("java.net.Proxy");
// 1.5
javaVersionNumber++;
Class.forName("java.net.CookieStore");
// 1.6
javaVersionNumber++;
Class.forName("java.nio.file.FileSystem");
// 1.7
javaVersionNumber++;
Class.forName("java.lang.reflect.Executable");
// 1.8
javaVersionNumber++;
} catch (Throwable ignore) {
}
// working folder
File workingDir = new File(StringPool.EMPTY);
WORKING_FOLDER = workingDir.getAbsolutePath();
}
private static String[] jrePackages;
/**
* Returns list of packages, build into runtime jars.
*/
public static String[] jrePackages() {
if (jrePackages == null) {
buildJrePackages();
}
return jrePackages;
}
/**
* Builds a set of java core packages.
*/
private static void buildJrePackages() {
ArrayList packages = new ArrayList<>();
switch (javaVersionNumber) {
case 18:
case 17:
case 16:
case 15:
// in Java1.5, the apache stuff moved
packages.add("com.sun.org.apache");
// fall through...
case 14:
if (javaVersionNumber == 14) {
packages.add("org.apache.crimson");
packages.add("org.apache.xalan");
packages.add("org.apache.xml");
packages.add("org.apache.xpath");
}
packages.add("org.ietf.jgss");
packages.add("org.w3c.dom");
packages.add("org.xml.sax");
// fall through...
case 13:
packages.add("org.omg");
packages.add("com.sun.corba");
packages.add("com.sun.jndi");
packages.add("com.sun.media");
packages.add("com.sun.naming");
packages.add("com.sun.org.omg");
packages.add("com.sun.rmi");
packages.add("sunw.io");
packages.add("sunw.util");
// fall through...
case 12:
packages.add("com.sun.java");
packages.add("com.sun.image");
// fall through...
case 11:
default:
// core stuff
packages.add("sun");
packages.add("java");
packages.add("javax");
break;
}
jrePackages = packages.toArray(new String[packages.size()]);
}
/**
* Returns current working folder.
*/
public static String userDir() {
return System.getProperty(USER_DIR);
}
/**
* Returns current user.
*/
public static String userName() {
return System.getProperty(USER_NAME);
}
/**
* Returns user home folder.
*/
public static String userHome() {
return System.getProperty(USER_HOME);
}
/**
* Returns current working folder.
* This is NOT a user folder.
*/
public static String workingFolder() {
return WORKING_FOLDER;
}
/**
* Returns JRE home.
*/
public static String javaJreHome() {
return System.getProperty(JAVA_HOME);
}
/**
* Returns JAVA_HOME which is not equals to "java.home" property
* since it points to JAVA_HOME/jre folder.
*/
public static String javaHome() {
String home = System.getProperty(JAVA_HOME);
if (home == null) {
return null;
}
int i = home.lastIndexOf('\\');
int j = home.lastIndexOf('/');
if (j > i) {
i = j;
}
return home.substring(0, i);
}
/**
* Returns system temp dir.
*/
public static String tempDir() {
return System.getProperty(TEMP_DIR);
}
/**
* Returns OS name.
*/
public static String osName() {
return System.getProperty(OS_NAME);
}
/**
* Returns OS version.
*/
public static String osVersion() {
return System.getProperty(OS_VERSION);
}
/**
* Returns Java version string, as specified in system property.
* Returned string contain major version, minor version and revision.
* @see #javaSpecificationVersion()
*/
public static String javaVersion() {
return System.getProperty(JAVA_VERSION);
}
/**
* Retrieves the version of the currently running JVM.
*/
public static String javaSpecificationVersion() {
return System.getProperty(JAVA_SPECIFICATION_VERSION);
}
/**
* Returns detected java version. Returned number is
* a number 10x the major.minor, e.g.
* Java1.5 returns 15.
*/
public static int javaVersionNumber() {
return javaVersionNumber;
}
/**
* Returns Java vendor.
*/
public static String javaVendor() {
return System.getProperty(JAVA_VENDOR);
}
/**
* Checks if the currently running JVM is at least compliant
* with provided JDK version.
* @param version java version multiplied by 10, e.g. 1.5 is 15
*/
public static boolean isAtLeastJavaVersion(int version) {
return javaVersionNumber >= version;
}
/**
* Checks if the currently running JVM is equal to provided version.
* @param version java version, multiplied by 10, e.g. 1.5 is 15.
*/
public static boolean isJavaVersion(int version) {
return javaVersionNumber == version;
}
/**
* Returns system class path.
*/
public static String systemClassPath() {
return System.getProperty(JAVA_CLASSPATH);
}
/**
* Returns path separator.
*/
public static String pathSeparator() {
return System.getProperty(PATH_SEPARATOR);
}
/**
* Returns file encoding.
*/
public static String fileEncoding() {
return System.getProperty(FILE_ENCODING);
}
/**
* Returns true if host is Windows.
*/
public static boolean isHostWindows() {
return osName().toUpperCase().startsWith("WINDOWS");
}
/**
* Returns true if host is Linux.
*/
public static boolean isHostLinux() {
return osName().toUpperCase().startsWith("LINUX");
}
/**
* Returns true if host is a general unix.
*/
public static boolean isHostUnix() {
boolean unixVariant = isHostAix() | isHostLinux() | isHostMac() | isHostSolaris();
return (!unixVariant && File.pathSeparator.equals(StringPool.COLON));
}
/**
* Returns true if host is Mac.
*/
public static boolean isHostMac() {
return osName().toUpperCase().startsWith("MAC OS X");
}
/**
* Returns true if host is Solaris.
*/
public static boolean isHostSolaris() {
return osName().toUpperCase().startsWith("SUNOS");
}
/**
* Returns true if host is AIX.
*/
public static boolean isHostAix() {
return osName().equalsIgnoreCase("AIX");
}
/**
* Returns bootstrap class path.
*/
public static String getSunBoothClassPath() {
return System.getProperty(SUN_BOOT_CLASS_PATH);
}
// ---------------------------------------------------------------- http proxy
/**
* Sets HTTP proxy settings.
*/
public static void setHttpProxy(String host, String port, String username, String password) {
System.getProperties().put(HTTP_PROXY_HOST, host);
System.getProperties().put(HTTP_PROXY_PORT, port);
System.getProperties().put(HTTP_PROXY_USER, username);
System.getProperties().put(HTTP_PROXY_PASSWORD, password);
}
/**
* Sets HTTP proxy settings.
*/
public static void setHttpProxy(String host, String port) {
System.getProperties().put(HTTP_PROXY_HOST, host);
System.getProperties().put(HTTP_PROXY_PORT, port);
}
}