import java.net.URL;
import java.net.URLDecoder;
public class PathUtil
{
/**
* Get the env of windir, such as "C:\WINDOWS".
* @return the env of windir value.
*/
public static String getWindir(){
return System.getenv("windir");
}
/**
* Get file separator, such as "/" on unix.
*
* @return the separator of file.
*/
public static String getFileSeparator()
{
return System.getProperty("file.separator");
}
/**
* Get line separator, such as "\n" on unix.
*
* @return the separator of line.
*/
public static String getLineSeparator()
{
return System.getProperty("line.separator");
}
/**
* Get programPath
*
* @return programPath
*/
public static String getProgramPath()
{
Class<PathUtil> cls = PathUtil.class;
ClassLoader loader = cls.getClassLoader();
//
// Get the full name of the class.
//
String clsName = cls.getName() + ".class";
//
// Get the package that include the class.
//
Package pack = cls.getPackage();
String path = "";
//
// Transform package name to path.
//
if(pack != null)
{
String packName = pack.getName();
//
// Get the class's file name.
//
clsName = clsName.substring(packName.length() + 1);
//
// If package is simple transform package name to path directly,
// else transform package name to path by package name's
// constituent.
//
path = packName;
if(path.indexOf(".") > 0)
{
path = path.replace(".", "/");
}
path = path + "/";
}
URL url = loader.getResource(path + clsName);
//
// Get path information form the instance of URL.
//
String retPath = url.getPath();
//
// Delete protocol name "file:" form path information.
//
try
{
int pos = retPath.indexOf("file:");
if(pos > -1)
{
retPath = retPath.substring(pos + 5);
}
//
// Delete the information of class file from the information of
// path.
//
pos = retPath.indexOf(path + clsName);
retPath = retPath.substring(0, pos - 1);
//
// If the class file was packageed into JAR e.g. file, delete the
// file name of the corresponding JAR e.g..
//
if(retPath.endsWith("!"))
{
retPath = retPath.substring(0, retPath.lastIndexOf("/"));
}
retPath = URLDecoder.decode(retPath, "utf-8");
}
catch(Exception e)
{
retPath = null;
System.out.println(e.toString());
}
return retPath;
}
}
URL url = loader.getResource(path + clsName);
//
// Get path information form the instance of URL.
//
String retPath = url.getPath();
//
// Delete protocol name "file:" form path information.
//
try
{
int pos = retPath.indexOf("file:");
if(pos > -1)
{
retPath = retPath.substring(pos + 5);
}
//
// Delete the information of class file from the information of
// path.
//
pos = retPath.indexOf(path + clsName);
retPath = retPath.substring(0, pos - 1);
//
// If the class file was packageed into JAR e.g. file, delete the
// file name of the corresponding JAR e.g..
//
if(retPath.endsWith("!"))
{
retPath = retPath.substring(0, retPath.lastIndexOf("/"));
}
retPath = URLDecoder.decode(retPath, "utf-8");
}
catch(Exception e)
{
retPath = null;
System.out.println(e.toString());
}
return retPath;
}