org.zanata.client.ant.po.Utility Maven / Gradle / Ivy

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package org.zanata.client.ant.po;

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Arrays;

import org.apache.tools.ant.Project;

class Utility
{

   /**
    * Converts a string to a URL. If it doesn't form a valid URL as is, it will
    * be treated as a file and converted to a file: URL. Relative file paths
    * will be interpreted, relative to basedir, and converted to absolute form.
    * 
    * @param src a URL or a file path
    * @param basedir base directory for relative file paths
    * @return URL-equivalent of src
    * @throws MalformedURLException
    */
   public static URL createURL(String src, File basedir) throws MalformedURLException
   {
      URL srcURL;
      try
      {
         srcURL = new URL(src);
      }
      catch (MalformedURLException e)
      {
         File srcFile = new File(src);
         if (!srcFile.isAbsolute())
         {
            srcFile = new File(basedir, src);
         }
         srcURL = srcFile.toURI().toURL();
      }
      return srcURL;
   }

   public static String toString(ClassLoader loader)
   {
      if (loader instanceof URLClassLoader)
      {
         URLClassLoader ul = (URLClassLoader) loader;
         return "URLClassLoader" + Arrays.asList(ul.getURLs()).toString();
      }
      return String.valueOf(loader);
   }

   /**
    * Returns the base directory of the specified project, or user's current
    * working directory if project is null.
    * 
    * @param project
    * @return
    */
   public static File getBaseDir(Project project)
   {
      if (project == null)
         return new File(System.getProperty("user.dir"));
      else
         return project.getBaseDir();
   }

}