com.darwinsys.lang.SysDep Maven / Gradle / Ivy
// BEGIN main
package com.darwinsys.lang;
import java.io.File;
/** Some things that are System Dependent.
* All methods are static.
* @author Ian Darwin
*/
public class SysDep {
final static String UNIX_NULL_DEV = "/dev/null";
final static String WINDOWS_NULL_DEV = "NUL:";
final static String FAKE_NULL_DEV = "jnk";
/** Return the name of the "Null Device" on platforms which support it,
* or "jnk" (to create an obviously well-named temp file) otherwise.
* @return The name to use for output.
*/
public static String getDevNull() {
if (new File(UNIX_NULL_DEV).exists()) { // <1>
return UNIX_NULL_DEV;
}
String sys = System.getProperty("os.name"); // <2>
if (sys==null) { // <3>
return FAKE_NULL_DEV;
}
if (sys.startsWith("Windows")) { // <4>
return WINDOWS_NULL_DEV;
}
return FAKE_NULL_DEV; // <5>
}
}
// END main