Support for adding license information to the plugins (plugin.license), e.g. Apache-2.0 or MIT

pf4j/src/main/java/ro/fortsoft/pf4j/ManifestPluginDescriptorFinder.java

@@ -74,6 +74,8 @@ public abstract class ManifestPluginDescriptorFinder implements PluginDescriptor
             pluginDescriptor.setRequires(requires);
         }
 
+        pluginDescriptor.setLicense(attributes.getValue("Plugin-License"));
+
         return pluginDescriptor;
     }
 

pf4j/src/main/java/ro/fortsoft/pf4j/PluginDescriptor.java

@@ -39,6 +39,7 @@ public class PluginDescriptor {
     private Expression requires;
     private String provider;
     private List<PluginDependency> dependencies;
+    private String license;
 
     public PluginDescriptor() {
     	requires = gte("0.0.0"); // Any
@@ -87,6 +88,13 @@ public class PluginDescriptor {
         return provider;
     }
 
+    /**
+     * Returns the legal license of this plugin, e.g. "Apache-2.0", "MIT" etc
+     */
+    public String getLicense() {
+        return license;
+    }
+
     /**
      * Returns all dependencies declared by this plugin.
      * Returns an empty array if this plugin does not declare any require.
@@ -99,8 +107,9 @@ public class PluginDescriptor {
 	public String toString() {
 		return "PluginDescriptor [pluginId=" + pluginId + ", pluginClass="
 				+ pluginClass + ", version=" + version + ", provider="
-				+ provider + ", dependencies=" + dependencies
-				+ "]";
+				+ provider + ", dependencies=" + dependencies + ", description="
+                + pluginDescription + ", requires=" + requires + ", license="
+				+ license + "]";
 	}
 
 	void setPluginId(String pluginId) {
@@ -125,7 +134,7 @@ public class PluginDescriptor {
 
     void setRequires(String requires) {
         Parser<Expression> parser = ExpressionParser.newInstance();
-        this.requires = parser.parse(requires);
+        setRequires(parser.parse(requires));
     }
 
     void setRequires(Expression requires) {
@@ -155,4 +164,8 @@ public class PluginDescriptor {
     	}
     }
 
+    public void setLicense(String license) {
+        this.license = license;
+    }
+
 }

pf4j/src/main/java/ro/fortsoft/pf4j/PropertiesPluginDescriptorFinder.java

@@ -108,6 +108,8 @@ public class PropertiesPluginDescriptorFinder implements PluginDescriptorFinder
             pluginDescriptor.setRequires(requires);
         }
 
+        pluginDescriptor.setLicense(properties.getProperty("plugin.license"));
+
         return pluginDescriptor;
     }
 

pf4j/src/test/java/ro/fortsoft/pf4j/ManifestPluginDescriptorFinderTest.java

@@ -90,6 +90,7 @@ public class ManifestPluginDescriptorFinderTest {
         assertEquals("test-plugin-2", plugin1.getDependencies().get(0).getPluginId());
         assertEquals("test-plugin-3", plugin1.getDependencies().get(1).getPluginId());
         assertEquals("~1.0", plugin1.getDependencies().get(1).getPluginVersionSupport());
+        assertEquals("Apache-2.0", plugin1.getLicense());
         assertTrue(plugin1.getRequires().interpret(Version.valueOf("1.0.0")));
 
         assertEquals("test-plugin-2", plugin2.getPluginId());
@@ -153,6 +154,7 @@ public class ManifestPluginDescriptorFinderTest {
             + "Plugin-Class: ro.fortsoft.pf4j.plugin.TestPlugin\n"
             + "Plugin-Dependencies: test-plugin-2,test-plugin-3@~1.0\n"
             + "Plugin-Requires: *\n"
+            + "Plugin-License: Apache-2.0\n"
             + "Created-By: Apache Maven 3.0.5\n"
             + "Build-Jdk: 1.8.0_45\n"
             + "Specification-Version: 0.10.0-SNAPSHOT\n"

pf4j/src/test/java/ro/fortsoft/pf4j/PropertiesPluginDescriptorFinderTest.java

@@ -78,6 +78,7 @@ public class PropertiesPluginDescriptorFinderTest {
         assertEquals("test-plugin-2", plugin1.getDependencies().get(0).getPluginId());
         assertEquals("test-plugin-3", plugin1.getDependencies().get(1).getPluginId());
         assertEquals("~1.0", plugin1.getDependencies().get(1).getPluginVersionSupport());
+        assertEquals("Apache-2.0", plugin1.getLicense());
         assertTrue(plugin1.getRequires().interpret(Version.valueOf("1.0.0")));
 
         assertEquals("test-plugin-2", plugin2.getPluginId());
@@ -122,6 +123,7 @@ public class PropertiesPluginDescriptorFinderTest {
             + "plugin.class=ro.fortsoft.pf4j.plugin.TestPlugin\n"
             + "plugin.dependencies=test-plugin-2,test-plugin-3@~1.0\n"
             + "plugin.requires=*\n"
+            + "plugin.license=Apache-2.0\n"
             + "\n"
             + ""
         };