Issue #68: Add Gradle plugin

build.xml

@@ -153,6 +153,7 @@
   <target name="-init" depends="-install.ivy">
     <echo level="info" message="Detected Java runtime major version: ${build.java.runtime}"/>
     <echo level="info" message="Java runtime: ${build.java.info}"/>
+    <ivy:configure file="ivy-settings.xml"/>
     <ivy:resolve log="${ivy.logging}"/>
     <local name="ivy.version-message"/>
     <condition property="ivy.version-message"

ivy-settings.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * (C) Copyright Uwe Schindler (Generics Policeman) and others.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+-->
+<ivysettings>
+  <settings defaultResolver="default"/>
+
+  <include url="${ivy.default.settings.dir}/ivysettings-public.xml"/>
+  <include url="${ivy.default.settings.dir}/ivysettings-shared.xml"/>
+  <include url="${ivy.default.settings.dir}/ivysettings-local.xml"/>
+  <include url="${ivy.default.settings.dir}/ivysettings-main-chain.xml"/>
+
+  <resolvers>
+    <ibiblio name="gradle" root="http://repo.gradle.org/gradle/libs-releases-local" m2compatible="true" />
+    <chain name="default" returnFirst="true" checkmodified="true" changingPattern=".*SNAPSHOT">
+      <resolver ref="main"/>
+      <resolver ref="gradle" />
+    </chain>
+  </resolvers>
+</ivysettings>

ivy.xml

@@ -27,6 +27,12 @@
     <dependency org="org.apache.ant" name="ant" rev="1.7.0" conf="build"/>
     <dependency org="org.apache.maven" name="maven-plugin-api" rev="2.0" conf="build"/>
     <dependency org="org.apache.maven.plugin-tools" name="maven-plugin-annotations" rev="3.2" conf="build"/>
+    <!-- we compile against older Gradle 1.12 version (latest of 1.x), because 1.x still works with Java 1.5: -->
+    <dependency org="org.gradle" name="gradle-core" rev="1.12" conf="build"/>
+    <dependency org="org.gradle" name="gradle-base-services" rev="1.12" conf="build"/>
+    <dependency org="org.slf4j" name="slf4j-api" rev="1.7.5" conf="build"/>
+    <!-- Gradle also needs Groovy, but we need it as build tool, too: -->
+    <dependency org="org.codehaus.groovy" name="groovy-all" rev="2.2.2" conf="build,buildtools"/>
     <!-- ASM 5.0.4 minimal: -->
     <dependency org="org.ow2.asm" name="asm" rev="5.0.4" conf="build,bundle"/>
     <dependency org="org.ow2.asm" name="asm-commons" rev="5.0.4" conf="build,bundle"/>
@@ -39,7 +45,6 @@
     <dependency org="commons-cli" name="commons-cli" rev="1.2" conf="build,bundle"/>
     <dependency org="com.googlecode.jarjar" name="jarjar" rev="1.3" conf="buildtools"/>
     <dependency org="org.apache.maven" name="maven-ant-tasks" rev="2.1.3" conf="buildtools"/>
-    <dependency org="org.codehaus.groovy" name="groovy-all" rev="2.2.2" conf="buildtools"/>
     <dependency org="org.apache.ant" name="ant-antunit" rev="1.3" conf="test"/>
     <dependency org="ant-contrib" name="ant-contrib" rev="1.0b3" conf="test"/>
     <dependency org="junit" name="junit" rev="4.12" conf="test"/>

src/main/java/de/thetaphi/forbiddenapis/Checker.java

@@ -23,6 +23,7 @@
 import org.objectweb.asm.commons.Method;
 
 import java.io.BufferedReader;
+import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
@@ -351,6 +352,11 @@ public final void parseSignaturesFile(InputStream in) throws IOException,ParseEx
     parseSignaturesFile(in, false);
   }
 
+  /** Reads a list of API signatures from the given file. */
+  public final void parseSignaturesFile(File f) throws IOException,ParseException {
+    parseSignaturesFile(new FileInputStream(f));
+  }
+
   /** Reads a list of API signatures from a String. */
   public final void parseSignaturesString(String signatures) throws IOException,ParseException {
     parseSignaturesFile(new StringReader(signatures), false);
@@ -405,6 +411,11 @@ public final void addClassToCheck(final InputStream in) throws IOException {
     classesToCheck.put(reader.getClassName(), new ClassSignature(reader, false, true));
   }
 
+  /** Parses and adds a class from the given file to the list of classes to check. */
+  public final void addClassToCheck(File f) throws IOException {
+    addClassToCheck(new FileInputStream(f));
+  }
+
   public final boolean hasNoSignatures() {
     return forbiddenMethods.isEmpty() && forbiddenFields.isEmpty() && forbiddenClasses.isEmpty() && forbiddenClassPatterns.isEmpty() && (!options.contains(Option.INTERNAL_RUNTIME_FORBIDDEN));
   }

src/main/java/de/thetaphi/forbiddenapis/cli/CliMain.java

@@ -20,7 +20,6 @@
 
 import java.io.Closeable;
 import java.io.File;
-import java.io.FileInputStream;
 import java.io.IOException;
 import java.util.Arrays;
 import java.util.EnumSet;
@@ -266,7 +265,7 @@ public void run() throws ExitException {
         if (signaturesFiles != null) for (String sf : signaturesFiles) {
           final File f = new File(sf).getAbsoluteFile();
           LOG.info("Reading API signatures: " + f);
-          checker.parseSignaturesFile(new FileInputStream(f));
+          checker.parseSignaturesFile(f);
         }
       } catch (IOException ioe) {
         throw new ExitException(EXIT_ERR_OTHER, "IO problem while reading files with API signatures: " + ioe);
@@ -284,7 +283,7 @@ public void run() throws ExitException {
       LOG.info("Loading classes to check...");
       try {
         for (String f : files) {
-          checker.addClassToCheck(new FileInputStream(new File(classesDirectory, f)));
+          checker.addClassToCheck(new File(classesDirectory, f));
         }
       } catch (IOException ioe) {
         throw new ExitException(EXIT_ERR_OTHER, "Failed to load one of the given class files: " + ioe);