runtime/org.argeo.slc.repo/src/main/java/org/argeo/slc/repo/FreeLicense.java

   1 package org.argeo.slc.repo;
   2
   3 import java.io.InputStream;
   4 import java.net.URL;
   5
   6 import org.apache.commons.io.IOUtils;
   7 import org.argeo.slc.SlcException;
   8 import org.argeo.slc.build.License;
   9
  10 /** A free software license */
  11 public abstract class FreeLicense implements License {
  12         final static String RESOURCES = "/org/argeo/slc/repo/license/";
  13
  14         public final static FreeLicense GPL_v3 = new FreeLicense(
  15                         "GNU General Public License, version 3.0",
  16                         "http://www.gnu.org/licenses/gpl-3.0.txt",
  17                         "http://www.gnu.org/licenses/", RESOURCES + "gpl-3.0.txt") {
  18         };
  19
  20         public final static FreeLicense GPL_v2 = new FreeLicense(
  21                         "GNU General Public License, version 2.0",
  22                         "http://www.gnu.org/licenses/gpl-2.0.txt",
  23                         "http://www.gnu.org/licenses/", RESOURCES + "gpl-2.0.txt") {
  24         };
  25
  26         public final static FreeLicense APACHE_v2 = new FreeLicense(
  27                         "Apache License, Version 2.0",
  28                         "http://www.apache.org/licenses/LICENSE-2.0.txt",
  29                         "http://www.apache.org/licenses/", RESOURCES + "apache-2.0.txt") {
  30         };
  31
  32         public final static FreeLicense EPL_v1 = new FreeLicense(
  33                         "Eclipse Public License, Version 1.0",
  34                         "http://www.eclipse.org/legal/epl-v10.html",
  35                         "http://www.eclipse.org/legal/eplfaq.php", RESOURCES
  36                                         + "epel-1.0.txt") {
  37         };
  38
  39         public final static FreeLicense MIT = new FreeLicense("The MIT License",
  40                         "http://opensource.org/licenses/MIT", null, RESOURCES + "mit.txt") {
  41         };
  42
  43         public final static FreeLicense LGPL_v3 = new FreeLicense(
  44                         "GNU Lesser General Public License, version 3.0",
  45                         "http://www.gnu.org/licenses/lgpl-3.0.txt",
  46                         "http://www.gnu.org/licenses/", RESOURCES + "lgpl-3.0.txt") {
  47         };
  48
  49         public final static FreeLicense LGPL_v2 = new FreeLicense(
  50                         "GNU Lesser General Public License, version 2.1",
  51                         "http://www.gnu.org/licenses/lgpl-2.1.txt",
  52                         "http://www.gnu.org/licenses/", RESOURCES + "lgpl-2.1.txt") {
  53         };
  54
  55         private final String name, uri, link, resource;
  56
  57         public FreeLicense(String name, String uri) {
  58                 this(name, uri, null, null);
  59         }
  60
  61         public FreeLicense(String name, String uri, String link) {
  62                 this(name, uri, link, null);
  63         }
  64
  65         public FreeLicense(String name, String uri, String link, String resource) {
  66                 if (uri == null)
  67                         throw new SlcException("URI cannot be null");
  68                 this.name = name;
  69                 this.uri = uri;
  70                 this.link = link;
  71                 this.resource = resource;
  72                 getText();
  73         }
  74
  75         public String getName() {
  76                 return name;
  77         }
  78
  79         public String getUri() {
  80                 return uri;
  81         }
  82
  83         public String getLink() {
  84                 return link;
  85         }
  86
  87         @Override
  88         public String getText() {
  89                 InputStream in = null;
  90                 URL url = null;
  91                 try {
  92                         if (resource != null)
  93                                 url = getClass().getClassLoader().getResource(resource);
  94                         else
  95                                 url = new URL(uri);
  96                         in = url.openStream();
  97                         String text = IOUtils.toString(in);
  98                         return text;
  99                 } catch (Exception e) {
 100                         throw new SlcException("Cannot retrieve license " + name + " from "
 101                                         + url, e);
 102                 } finally {
 103                         IOUtils.closeQuietly(in);
 104                 }
 105         }
 106
 107         @Override
 108         public boolean equals(Object obj) {
 109                 if (!(obj instanceof License))
 110                         return false;
 111                 return ((License) obj).getUri().equals(getUri());
 112         }
 113
 114         @Override
 115         public int hashCode() {
 116                 return getUri().hashCode();
 117         }
 118
 119         @Override
 120         public String toString() {
 121                 return name + " (" + uri + ")";
 122         }
 123 }