1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/org/sonews/util/io/Resource.java	Fri Jun 26 16:48:50 2009 +0200
     1.3 @@ -0,0 +1,132 @@
     1.4 +/*
     1.5 + *   SONEWS News Server
     1.6 + *   see AUTHORS for the list of contributors
     1.7 + *
     1.8 + *   This program is free software: you can redistribute it and/or modify
     1.9 + *   it under the terms of the GNU General Public License as published by
    1.10 + *   the Free Software Foundation, either version 3 of the License, or
    1.11 + *   (at your option) any later version.
    1.12 + *
    1.13 + *   This program is distributed in the hope that it will be useful,
    1.14 + *   but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 + *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 + *   GNU General Public License for more details.
    1.17 + *
    1.18 + *   You should have received a copy of the GNU General Public License
    1.19 + *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
    1.20 + */
    1.21 +
    1.22 +package org.sonews.util.io;
    1.23 +
    1.24 +import java.io.BufferedReader;
    1.25 +import java.io.IOException;
    1.26 +import java.io.InputStream;
    1.27 +import java.io.InputStreamReader;
    1.28 +import java.net.URL;
    1.29 +import java.nio.charset.Charset;
    1.30 +
    1.31 +/**
    1.32 + * Provides method for loading of resources.
    1.33 + * @author Christian Lins
    1.34 + * @since sonews/0.5.0
    1.35 + */
    1.36 +public final class Resource
    1.37 +{
    1.38 +  
    1.39 +  /**
    1.40 +   * Loads a resource and returns it as URL reference.
    1.41 +   * The Resource's classloader is used to load the resource, not
    1.42 +   * the System's ClassLoader so it may be safe to use this method
    1.43 +   * in a sandboxed environment.
    1.44 +   * @return
    1.45 +   */
    1.46 +  public static URL getAsURL(final String name)
    1.47 +  {
    1.48 +    if(name == null)
    1.49 +    {
    1.50 +      return null;
    1.51 +    }
    1.52 +
    1.53 +    return Resource.class.getClassLoader().getResource(name);
    1.54 +  }
    1.55 +  
    1.56 +  /**
    1.57 +   * Loads a resource and returns an InputStream to it.
    1.58 +   * @param name
    1.59 +   * @return
    1.60 +   */
    1.61 +  public static InputStream getAsStream(String name)
    1.62 +  {
    1.63 +    try
    1.64 +    {
    1.65 +      URL url = getAsURL(name);
    1.66 +      if(url == null)
    1.67 +      {
    1.68 +        return null;
    1.69 +      }
    1.70 +      else
    1.71 +      {
    1.72 +        return url.openStream();
    1.73 +      }
    1.74 +    }
    1.75 +    catch(IOException e)
    1.76 +    {
    1.77 +      e.printStackTrace();
    1.78 +      return null;
    1.79 +    }
    1.80 +  }
    1.81 +
    1.82 +  /**
    1.83 +   * Loads a plain text resource.
    1.84 +   * @param withNewline If false all newlines are removed from the 
    1.85 +   * return String
    1.86 +   */
    1.87 +  public static String getAsString(String name, boolean withNewline)
    1.88 +  {
    1.89 +    if(name == null)
    1.90 +      return null;
    1.91 +
    1.92 +    BufferedReader in = null;
    1.93 +    try
    1.94 +    {
    1.95 +      InputStream ins = getAsStream(name);
    1.96 +      if(ins == null)
    1.97 +        return null;
    1.98 +
    1.99 +      in = new BufferedReader(
   1.100 +        new InputStreamReader(ins, Charset.forName("UTF-8")));
   1.101 +      StringBuffer buf = new StringBuffer();
   1.102 +
   1.103 +      for(;;)
   1.104 +      {
   1.105 +        String line = in.readLine();
   1.106 +        if(line == null)
   1.107 +          break;
   1.108 +
   1.109 +        buf.append(line);
   1.110 +        if(withNewline)
   1.111 +          buf.append('\n');
   1.112 +      }
   1.113 +
   1.114 +      return buf.toString();
   1.115 +    }
   1.116 +    catch(Exception e)
   1.117 +    {
   1.118 +      e.printStackTrace();
   1.119 +      return null;
   1.120 +    }
   1.121 +    finally
   1.122 +    {
   1.123 +      try
   1.124 +      {
   1.125 +        if(in != null)
   1.126 +          in.close();
   1.127 +      }
   1.128 +      catch(IOException ex)
   1.129 +      {
   1.130 +        ex.printStackTrace();
   1.131 +      }
   1.132 +    }
   1.133 +  }
   1.134 +
   1.135 +}