sonews-drupal: src/org/sonews/util/io/Resource.java@ca54040b4409

     1 /*

     2  *   SONEWS News Server

     3  *   see AUTHORS for the list of contributors

     4  *

     5  *   This program is free software: you can redistribute it and/or modify

     6  *   it under the terms of the GNU General Public License as published by

     7  *   the Free Software Foundation, either version 3 of the License, or

     8  *   (at your option) any later version.

     9  *

    10  *   This program is distributed in the hope that it will be useful,

    11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of

    12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    13  *   GNU General Public License for more details.

    14  *

    15  *   You should have received a copy of the GNU General Public License

    16  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.

    17  */

    19 package org.sonews.util.io;

    21 import java.io.BufferedReader;

    22 import java.io.File;

    23 import java.io.FileInputStream;

    24 import java.io.IOException;

    25 import java.io.InputStream;

    26 import java.io.InputStreamReader;

    27 import java.net.URL;

    28 import java.nio.charset.Charset;

    30 /**

    31  * Provides method for loading of resources.

    32  * @author Christian Lins

    33  * @since sonews/0.5.0

    34  */

    35 public final class Resource

    36 {

    38 	/**

    39 	 * Loads a resource and returns it as URL reference.

    40 	 * The Resource's classloader is used to load the resource, not

    41 	 * the System's ClassLoader so it may be safe to use this method

    42 	 * in a sandboxed environment.

    43 	 * @return

    44 	 */

    45 	public static URL getAsURL(final String name)

    46 	{

    47 		if (name == null) {

    48 			return null;

    49 		}

    51 		return Resource.class.getClassLoader().getResource(name);

    52 	}

    54 	/**

    55 	 * Loads a resource and returns an InputStream to it.

    56 	 * @param name

    57 	 * @return

    58 	 */

    59 	public static InputStream getAsStream(String name)

    60 	{

    61 		try {

    62 			URL url = getAsURL(name);

    63 			if (url == null) {

    64 				File file = new File(name);

    65 				if(file.exists()) {

    66 					return new FileInputStream(file);

    67 				}

    68 				return null;

    69 			} else {

    70 				return url.openStream();

    71 			}

    72 		} catch (IOException e) {

    73 			e.printStackTrace();

    74 			return null;

    75 		}

    76 	}

    78 	/**

    79 	 * Loads a plain text resource.

    80 	 * @param withNewline If false all newlines are removed from the

    81 	 * return String

    82 	 */

    83 	public static String getAsString(String name, boolean withNewline)

    84 	{

    85 		if (name == null) {

    86 			return null;

    87 		}

    89 		BufferedReader in = null;

    90 		try {

    91 			InputStream ins = getAsStream(name);

    92 			if (ins == null) {

    93 				return null;

    94 			}

    96 			in = new BufferedReader(

    97 				new InputStreamReader(ins, Charset.forName("UTF-8")));

    98 			StringBuffer buf = new StringBuffer();

   100 			for (;;) {

   101 				String line = in.readLine();

   102 				if (line == null) {

   103 					break;

   104 				}

   106 				buf.append(line);

   107 				if (withNewline) {

   108 					buf.append('\n');

   109 				}

   110 			}

   112 			return buf.toString();

   113 		} catch (Exception e) {

   114 			e.printStackTrace();

   115 			return null;

   116 		} finally {

   117 			try {

   118 				if (in != null) {

   119 					in.close();

   120 				}

   121 			} catch (IOException ex) {

   122 				ex.printStackTrace();

   123 			}

   124 		}

   125 	}

   126 }

author	František Kučera <franta-hg@frantovo.cz>
	Sun, 30 Oct 2011 22:13:32 +0100
changeset 112	ca54040b4409
parent 44	5d7d1adf387f
permissions	-rwxr-xr-x