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Jodd Core tools and utilities, including type converters, JDateTime, cache etc.
// Copyright (c) 2003-2014, Jodd Team (jodd.org). All Rights Reserved.
package jodd.util;
import java.io.File;
import java.util.ArrayList;
/**
* Various system utilities.
*/
public class SystemUtil {
// ---------------------------------------------------------------- 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;
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) {
}
}
private static String[] jrePackages;
/**
* Returns list of packages, build into runtime jars.
*/
public static String[] getJrePackages() {
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 getUserDir() {
return System.getProperty(USER_DIR);
}
/**
* Returns current user.
*/
public static String getUserName() {
return System.getProperty(USER_NAME);
}
/**
* Returns user home folder.
*/
public static String getUserHome() {
return System.getProperty(USER_HOME);
}
/**
* Returns current working folder.
* Just a better name for {@link #getUserDir()}.
*/
public static String getWorkingFolder() {
return System.getProperty(USER_DIR);
}
/**
* Returns JRE home.
*/
public static String getJavaJreHome() {
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 getJavaHome() {
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 getTempDir() {
return System.getProperty(TEMP_DIR);
}
/**
* Returns OS name.
*/
public static String getOsName() {
return System.getProperty(OS_NAME);
}
/**
* Returns OS version.
*/
public static String getOsVersion() {
return System.getProperty(OS_VERSION);
}
/**
* Returns Java version string, as specified in system property.
* Returned string contain major version, minor version and revision.
* @see #getJavaSpecificationVersion()
*/
public static String getJavaVersion() {
return System.getProperty(JAVA_VERSION);
}
/**
* Retrieves the version of the currently running JVM.
*/
public static String getJavaSpecificationVersion() {
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 getJavaVersionNumber() {
return javaVersionNumber;
}
/**
* Returns Java vendor.
*/
public static String getJavaVendor() {
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 getClassPath() {
return System.getProperty(JAVA_CLASSPATH);
}
/**
* Returns path separator.
*/
public static String getPathSeparator() {
return System.getProperty(PATH_SEPARATOR);
}
/**
* Returns file encoding.
*/
public static String getFileEncoding() {
return System.getProperty(FILE_ENCODING);
}
/**
* Returns true if host is Windows.
*/
public static boolean isHostWindows() {
return getOsName().toUpperCase().startsWith("WINDOWS");
}
/**
* Returns true if host is Linux.
*/
public static boolean isHostLinux() {
return getOsName().toUpperCase().startsWith("LINUX");
}
/**
* Returns true if host is a general unix.
*/
public static boolean isHostUnix() {
return File.pathSeparator.equals(StringPool.COLON);
}
/**
* Returns true if host is Mac.
*/
public static boolean isHostMac() {
return getOsName().toUpperCase().startsWith("MAC OS X");
}
/**
* Returns true if host is Solaris.
*/
public static boolean isHostSolaris() {
return getOsName().toUpperCase().startsWith("SUNOS");
}
/**
* Returns true if host is AIX.
*/
public static boolean isHostAix() {
return getOsName().toUpperCase().equals("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);
}
}