/* System.java -- useful methods to interface with the system
- Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
+ Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of GNU Classpath.
package java.lang;
-import gnu.classpath.Configuration;
+import gnu.classpath.SystemProperties;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
// in vm/reference/java/lang/Runtime for implications of this fact.
/**
- * Add to the default properties. The field is stored in Runtime, because
- * of the bootstrap sequence; but this adds several useful properties to
- * the defaults. Once the default is stabilized, it should not be modified;
- * instead it is passed as a parent properties for fast setup of the
- * defaults when calling <code>setProperties(null)</code>.
- */
- static
- {
- // Note that this loadLibrary() takes precedence over the one in Object,
- // since Object.<clinit> is waiting for System.<clinit> to complete
- // first; but loading a library twice is harmless.
- if (Configuration.INIT_LOAD_LIBRARY)
- loadLibrary("javalang");
-
- Properties defaultProperties = Runtime.defaultProperties;
-
- // Set base URL if not already set.
- if (defaultProperties.get("gnu.classpath.home.url") == null)
- defaultProperties.put("gnu.classpath.home.url",
- "file://"
- + defaultProperties.get("gnu.classpath.home")
- + "/lib");
-
- // Set short name if not already set.
- if (defaultProperties.get("gnu.classpath.vm.shortname") == null)
- {
- String value = defaultProperties.getProperty("java.vm.name");
- int index = value.lastIndexOf(' ');
- if (index != -1)
- value = value.substring(index + 1);
- defaultProperties.put("gnu.classpath.vm.shortname", value);
- }
-
- // Network properties
- if (defaultProperties.get("http.agent") == null)
- {
- String userAgent
- = ("gnu-classpath/"
- + defaultProperties.getProperty("gnu.classpath.version")
- + " ("
- + defaultProperties.getProperty("gnu.classpath.vm.shortname")
- + "/"
- + defaultProperties.getProperty("java.vm.version")
- + ")");
- defaultProperties.put("http.agent", userAgent);
- }
-
- defaultProperties.put("gnu.cpu.endian",
- isWordsBigEndian() ? "big" : "little");
-
- // GCJ LOCAL: Classpath sets common encoding aliases here.
- // Since we don't (yet) have gnu.java.io.EncodingManager, these
- // are a waste of time and just slow down system startup.
-
- // XXX FIXME - Temp hack for old systems that set the wrong property
- if (defaultProperties.get("java.io.tmpdir") == null)
- defaultProperties.put("java.io.tmpdir",
- defaultProperties.get("java.tmpdir"));
- }
-
- /**
- * Stores the current system properties. This can be modified by
- * {@link #setProperties(Properties)}, but will never be null, because
- * setProperties(null) sucks in the default properties.
- */
- // Note that we use clone here and not new. Some programs assume
- // that the system properties do not have a parent.
- static Properties properties
- = (Properties) Runtime.defaultProperties.clone();
-
- /**
* The standard InputStream. This is assigned at startup and starts its
* life perfectly valid. Although it is marked final, you can change it
* using {@link #setIn(InputStream)} through some hefty VM magic.
* @param sm the new SecurityManager
* @throws SecurityException if permission is denied
*/
- public synchronized static void setSecurityManager(SecurityManager sm)
+ public static synchronized void setSecurityManager(SecurityManager sm)
{
// Implementation note: the field lives in Runtime because of bootstrap
// initialization issues. This method is synchronized so that no other
SecurityManager sm = Runtime.securityManager; // Be thread-safe.
if (sm != null)
sm.checkPropertiesAccess();
- return properties;
+ return SystemProperties.getProperties();
}
/**
SecurityManager sm = Runtime.securityManager; // Be thread-safe.
if (sm != null)
sm.checkPropertiesAccess();
- if (properties == null)
- {
- // Note that we use clone here and not new. Some programs
- // assume that the system properties do not have a parent.
- properties = (Properties) Runtime.defaultProperties.clone();
- }
- System.properties = properties;
+ SystemProperties.setProperties(properties);
}
/**
sm.checkPropertyAccess(key);
else if (key.length() == 0)
throw new IllegalArgumentException("key can't be empty");
- return properties.getProperty(key);
+ return SystemProperties.getProperty(key);
}
/**
SecurityManager sm = Runtime.securityManager; // Be thread-safe.
if (sm != null)
sm.checkPropertyAccess(key);
- return properties.getProperty(key, def);
+ return SystemProperties.getProperty(key, def);
}
/**
SecurityManager sm = Runtime.securityManager; // Be thread-safe.
if (sm != null)
sm.checkPermission(new PropertyPermission(key, "write"));
- return (String) properties.setProperty(key, value);
+ return SystemProperties.setProperty(key, value);
}
/**
* Gets the value of an environment variable.
*
* @param name the name of the environment variable
- * @return the string value of the variable
+ * @return the string value of the variable or null when the
+ * environment variable is not defined.
* @throws NullPointerException
* @throws SecurityException if permission is denied
* @since 1.5
+ * @specnote This method was deprecated in some JDK releases, but
+ * was restored in 1.5.
*/
public static String getenv(String name)
{
throw new NullPointerException();
SecurityManager sm = Runtime.securityManager; // Be thread-safe.
if (sm != null)
- sm.checkPermission(new RuntimePermission("getenv."+name));
+ sm.checkPermission(new RuntimePermission("getenv." + name));
return getenv0(name);
}
* check may be performed, <code>checkLink</code>. This just calls
* <code>Runtime.getRuntime().load(filename)</code>.
*
+ * <p>
+ * The library is loaded using the class loader associated with the
+ * class associated with the invoking method.
+ *
* @param filename the code file to load
* @throws SecurityException if permission is denied
* @throws UnsatisfiedLinkError if the file cannot be loaded
* check may be performed, <code>checkLink</code>. This just calls
* <code>Runtime.getRuntime().load(filename)</code>.
*
+ * <p>
+ * The library is loaded using the class loader associated with the
+ * class associated with the invoking method.
+ *
* @param libname the library file to load
* @throws SecurityException if permission is denied
* @throws UnsatisfiedLinkError if the file cannot be loaded
}
/**
- * Detect big-endian systems.
- *
- * @return true if the system is big-endian.
- */
- static native boolean isWordsBigEndian();
-
- /**
* Set {@link #in} to a new InputStream.
*
* @param in the new InputStream
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