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package sun.security.tools;

import java.io.File;
import java.io.IOException;
import java.lang.String;
import java.util.StringTokenizer;
import java.net.URL;
import java.net.URLClassLoader;
import java.net.MalformedURLException;

A utility class for handle path list
/** * A utility class for handle path list * */
public class PathList {
Utility method for appending path from pathFrom to pathTo.
Params:
  • pathTo – the target path
  • pathFrom – the path to be appended to pathTo
Returns:the resulting path
/** * Utility method for appending path from pathFrom to pathTo. * * @param pathTo the target path * @param pathFrom the path to be appended to pathTo * @return the resulting path */
public static String appendPath(String pathTo, String pathFrom) { if (pathTo == null || pathTo.length() == 0) { return pathFrom; } else if (pathFrom == null || pathFrom.length() == 0) { return pathTo; } else { return pathTo + File.pathSeparator + pathFrom; } }
Utility method for converting a search path string to an array of directory and JAR file URLs.
Params:
  • path – the search path string
Returns:the resulting array of directory and JAR file URLs
/** * Utility method for converting a search path string to an array * of directory and JAR file URLs. * * @param path the search path string * @return the resulting array of directory and JAR file URLs */
public static URL[] pathToURLs(String path) { StringTokenizer st = new StringTokenizer(path, File.pathSeparator); URL[] urls = new URL[st.countTokens()]; int count = 0; while (st.hasMoreTokens()) { URL url = fileToURL(new File(st.nextToken())); if (url != null) { urls[count++] = url; } } if (urls.length != count) { URL[] tmp = new URL[count]; System.arraycopy(urls, 0, tmp, 0, count); urls = tmp; } return urls; }
Returns the directory or JAR file URL corresponding to the specified local file name.
Params:
  • file – the File object
Returns:the resulting directory or JAR file URL, or null if unknown
/** * Returns the directory or JAR file URL corresponding to the specified * local file name. * * @param file the File object * @return the resulting directory or JAR file URL, or null if unknown */
private static URL fileToURL(File file) { String name; try { name = file.getCanonicalPath(); } catch (IOException e) { name = file.getAbsolutePath(); } name = name.replace(File.separatorChar, '/'); if (!name.startsWith("/")) { name = "/" + name; } // If the file does not exist, then assume that it's a directory if (!file.isFile()) { name = name + "/"; } try { return new URL("file", "", name); } catch (MalformedURLException e) { throw new IllegalArgumentException("file"); } } }