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         /** GNU */
  15         public final static FreeLicense GPL_v3 = new FreeLicense("GPL-3.0-or-later",
  16                         "http://www.gnu.org/licenses/gpl-3.0.txt", null, RESOURCES + "gpl-3.0.txt") {
  17         };
  18
  19         public final static FreeLicense GPL_v2 = new FreeLicense("GPL-2.0-or-later",
  20                         "http://www.gnu.org/licenses/gpl-2.0.txt", null, RESOURCES + "gpl-2.0.txt") {
  21         };
  22         public final static FreeLicense GPL = GPL_v3;
  23
  24         public final static FreeLicense LGPL_v3 = new FreeLicense("LGPL-3.0-or-later",
  25                         "http://www.gnu.org/licenses/lgpl-3.0.txt", null, RESOURCES + "lgpl-3.0.txt") {
  26         };
  27
  28         public final static FreeLicense LGPL_v2 = new FreeLicense("LGPL-2.0-or-later",
  29                         "http://www.gnu.org/licenses/lgpl-2.1.txt", null, RESOURCES + "lgpl-2.1.txt") {
  30         };
  31         public final static FreeLicense LGPL = LGPL_v3;
  32
  33         /** Apache */
  34         public final static FreeLicense APACHE_v2 = new FreeLicense("Apache-2.0",
  35                         "http://www.apache.org/licenses/LICENSE-2.0.txt", null, RESOURCES + "apache-2.0.txt") {
  36         };
  37         public final static FreeLicense APACHE = APACHE_v2;
  38
  39         /** Eclipse */
  40         public final static FreeLicense EPL_v1 = new FreeLicense("EPL-1.0", "http://www.eclipse.org/legal/epl-v10.html",
  41                         null, RESOURCES + "epl-1.0.txt") {
  42         };
  43         public final static FreeLicense EPL_v2 = new FreeLicense("EPL-2.0", "http://www.eclipse.org/legal/epl-v20.html",
  44                         null, RESOURCES + "epl-1.0.txt") {
  45         };
  46         public final static FreeLicense EPL = EPL_v1;
  47
  48         /** Miscellaneous */
  49         public final static FreeLicense MIT = new FreeLicense("MIT", "http://opensource.org/licenses/MIT", null,
  50                         RESOURCES + "mit.txt") {
  51         };
  52
  53         public final static FreeLicense BSD_NEW = new FreeLicense("BSD-3-Clause",
  54                         "http://opensource.org/licenses/BSD-3-Clause", null, RESOURCES + "bsd-3-clause.txt") {
  55         };
  56
  57         public final static FreeLicense BSD = BSD_NEW;
  58
  59         public final static FreeLicense CDDL_v1 = new FreeLicense("CDDL-1.0", "http://opensource.org/licenses/CDDL-1.0",
  60                         null, RESOURCES + "cddl-1.0.txt") {
  61         };
  62         public final static FreeLicense CDDL = CDDL_v1;
  63
  64         public final static FreeLicense MOZILLA_v2 = new FreeLicense("MPL-2.0", "https://opensource.org/licenses/MPL-2.0",
  65                         null, RESOURCES + "cddl-1.0.txt") {
  66         };
  67         public final static FreeLicense MOZILLA = MOZILLA_v2;
  68
  69         /** Public domain corner case */
  70         public final static License PUBLIC_DOMAIN = new License() {
  71
  72                 public String getUri() {
  73                         return "http://creativecommons.org/about/pdm";
  74                 }
  75
  76                 public String getText() {
  77                         return "This work is free of known copyright restrictions.";
  78                 }
  79
  80                 public String getName() {
  81                         return "Public Domain License";
  82                 }
  83
  84                 public String getLink() {
  85                         return "http://wiki.creativecommons.org/PDM_FAQ";
  86                 }
  87         };
  88
  89         private final String name, uri, link, resource;
  90
  91         public FreeLicense(String name, String uri) {
  92                 this(name, uri, null, null);
  93         }
  94
  95         public FreeLicense(String name, String uri, String link) {
  96                 this(name, uri, link, null);
  97         }
  98
  99         public FreeLicense(String name, String uri, String link, String resource) {
 100                 if (uri == null)
 101                         throw new SlcException("URI cannot be null");
 102                 this.name = name;
 103                 this.uri = uri;
 104                 this.link = link;
 105                 this.resource = resource;
 106                 getText();
 107         }
 108
 109         public String getName() {
 110                 return name;
 111         }
 112
 113         public String getUri() {
 114                 return uri;
 115         }
 116
 117         public String getLink() {
 118                 return link;
 119         }
 120
 121         @Override
 122         public String getText() {
 123                 InputStream in = null;
 124                 URL url = null;
 125                 try {
 126                         if (resource != null)
 127                                 url = getClass().getClassLoader().getResource(resource);
 128                         else
 129                                 url = new URL(uri);
 130                         in = url.openStream();
 131                         String text = IOUtils.toString(in);
 132                         return text;
 133                 } catch (Exception e) {
 134                         throw new SlcException("Cannot retrieve license " + name + " from " + url, e);
 135                 } finally {
 136                         IOUtils.closeQuietly(in);
 137                 }
 138         }
 139
 140         @Override
 141         public boolean equals(Object obj) {
 142                 if (!(obj instanceof License))
 143                         return false;
 144                 return ((License) obj).getUri().equals(getUri());
 145         }
 146
 147         @Override
 148         public int hashCode() {
 149                 return getUri().hashCode();
 150         }
 151
 152         @Override
 153         public String toString() {
 154                 StringBuilder sb = new StringBuilder(name != null ? name : uri);
 155 //              if (link != null)
 156 //                      sb.append(';').append("link=").append(link);
 157 //              else if (uri != null && name != null)
 158 //                      sb.append(';').append("link=").append(uri);
 159                 return sb.toString();
 160         }
 161 }