IClasspathContributor.

src/main/kotlin/com/beust/kobalt/api/IClasspathContributor.kt

@@ -0,0 +1,11 @@
+package com.beust.kobalt.api
+
+import com.beust.kobalt.maven.IClasspathDependency
+
+/**
+ * Implement this interface in order to add your own entries to the classpath. A list of contributors
+ * can be found on the `KobaltContext`.
+ */
+interface IClasspathContributor {
+    fun entriesFor(project: Project) : Collection<IClasspathDependency>
+}

src/main/kotlin/com/beust/kobalt/api/KobaltContext.kt

@@ -2,8 +2,10 @@ package com.beust.kobalt.api
 
 import com.beust.kobalt.Args
 import com.beust.kobalt.Plugins
+import java.util.*
 
 public class KobaltContext(val args: Args) {
     fun findPlugin(name: String) = Plugins.findPlugin(name)
+    val classpathContributors: ArrayList<IClasspathContributor> = arrayListOf()
 }
 

src/main/kotlin/com/beust/kobalt/internal/JvmCompilerPlugin.kt

@@ -1,6 +1,7 @@
 package com.beust.kobalt.internal
 
 import com.beust.kobalt.api.BasePlugin
+import com.beust.kobalt.api.KobaltContext
 import com.beust.kobalt.api.Project
 import com.beust.kobalt.api.annotation.Directive
 import com.beust.kobalt.api.annotation.Task
@@ -37,6 +38,15 @@ abstract class JvmCompilerPlugin @Inject constructor(
             }
         }
 
+
+        private fun runClasspathContributors(context: KobaltContext?, project: Project) :
+                Collection<IClasspathDependency> {
+            val result = arrayListOf<IClasspathDependency>()
+            context!!.classpathContributors.forEach {
+                result.addAll(it.entriesFor(project))
+            }
+            return result
+        }
     }
 
     /**
@@ -46,11 +56,25 @@ abstract class JvmCompilerPlugin @Inject constructor(
         log(2, "${project.name}: $s")
     }
 
-    fun calculateClasspath(vararg allDependencies : List<IClasspathDependency>): List<IClasspathDependency> {
+    var context: KobaltContext? = null
+
+    override fun apply(project: Project, context: KobaltContext) {
+        this.context = context
+    }
+
+    /**
+     * @return the classpath for this project, including the IClasspathContributors.
+     */
+    fun calculateClasspath(project: Project?, vararg allDependencies: List<IClasspathDependency>):
+            List<IClasspathDependency> {
         var result = arrayListOf<IClasspathDependency>()
         allDependencies.forEach { dependencies ->
             result.addAll(dependencyManager.transitiveClosure(dependencies))
         }
+        if (project != null) {
+            result.addAll(runClasspathContributors(context, project))
+        }
+
         return result
     }
 
@@ -61,7 +85,7 @@ abstract class JvmCompilerPlugin @Inject constructor(
         with(project) {
             arrayListOf(compileDependencies, compileProvidedDependencies, testDependencies,
                     testProvidedDependencies).forEach {
-                result.addAll(calculateClasspath(it))
+                result.addAll(calculateClasspath(project, it))
             }
         }
         return dependencyManager.reorderDependencies(result)

src/main/kotlin/com/beust/kobalt/plugin/android/AndroidPlugin.kt

@@ -1,18 +1,19 @@
 package com.beust.kobalt.plugin.android
 
-import com.beust.kobalt.api.BasePlugin
+import com.beust.kobalt.api.*
-import com.beust.kobalt.api.Kobalt
-import com.beust.kobalt.api.KobaltContext
-import com.beust.kobalt.api.Project
 import com.beust.kobalt.api.annotation.Directive
 import com.beust.kobalt.api.annotation.Task
 import com.beust.kobalt.internal.TaskResult
 import com.beust.kobalt.maven.FileDependency
 import com.beust.kobalt.maven.IClasspathDependency
+import com.beust.kobalt.maven.MavenId
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.RunCommand
 import com.beust.kobalt.misc.log
 import com.beust.kobalt.plugin.java.JavaCompiler
+import com.beust.kobalt.plugin.packaging.JarUtils
+import com.google.common.collect.ArrayListMultimap
+import com.google.common.collect.HashMultimap
 import com.google.inject.Inject
 import com.google.inject.Singleton
 import java.io.File
@@ -32,7 +33,7 @@ fun Project.android(init: AndroidConfiguration.() -> Unit) : AndroidConfiguratio
 }
 
 @Singleton
-public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) : BasePlugin() {
+public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) : BasePlugin(), IClasspathContributor {
     val ANDROID_HOME = "/Users/beust/android/adt-bundle-mac-x86_64-20140702/sdk"
     override val name = "android"
 
@@ -41,6 +42,7 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) :
         if (accept(project)) {
             project.compileDependencies.add(FileDependency(androidJar(project).toString()))
         }
+        context.classpathContributors.add(this)
     }
 
     val configurations = hashMapOf<String, AndroidConfiguration>()
@@ -49,7 +51,7 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) :
         configurations.put(p.name!!, configuration)
     }
 
-    override fun accept(p: Project) = configurations.containsKeyRaw(p.name)
+    override fun accept(project: Project) = configurations.containsKey(project.name!!)
 
     fun dirGet(dir: Path, vararg others: String) : String {
         val result = Paths.get(dir.toString(), *others)
@@ -60,8 +62,8 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) :
         return result.toString()
     }
 
-    fun compileSdkVersion(project: Project) = configurations.get(project.name!!)?.compileSdkVersion
+    fun compileSdkVersion(project: Project) = configurations[project.name!!]?.compileSdkVersion
-    fun buildToolsVersion(project: Project) = configurations.get(project.name!!)?.buildToolsVersion
+    fun buildToolsVersion(project: Project) = configurations[project.name!!]?.buildToolsVersion
 
     fun androidJar(project: Project) : Path =
             Paths.get(ANDROID_HOME, "platforms", "android-${compileSdkVersion(project)}", "android.jar")
@@ -76,12 +78,14 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) :
         val applicationId = configurations[project.name!!]?.applicationId!!
         val intermediates = Paths.get(project.directory, "app", "build", "intermediates")
         val manifestDir = Paths.get(project.directory, "app", "src", "main").toString()
-        val manifestIntermediateDir = dirGet(intermediates, "manifests", "full", flavor)
+//        val manifestIntermediateDir = dirGet(intermediates, "manifests", "full", flavor)
         val manifest = Paths.get(manifestDir, "AndroidManifest.xml")
         val generated = Paths.get(project.directory, "app", "build", "generated")
         val aapt = "$ANDROID_HOME/build-tools/$buildToolsVersion/aapt"
         val outputDir = dirGet(intermediates, "resources", "resources-$flavor")
 
+        explodeAarFiles(project, generated)
+
         val crunchedPngDir = dirGet(intermediates, "res", flavor)
         RunCommand(aapt).apply {
             directory = File(project.directory)
@@ -119,6 +123,23 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) :
         return TaskResult()
     }
 
+    /**
+     * Extract all the .aar files found in the dependencies and add the android.jar to classpathEntries,
+     * which will be added to the classpath at compile time
+     */
+    private fun explodeAarFiles(project: Project, outputDir: Path) {
+        project.compileDependencies.filter {
+            it.jarFile.get().name.endsWith(".aar")
+        }.forEach {
+            log(2, "Exploding ${it.jarFile.get()}")
+            val mavenId = MavenId(it.id)
+            val destDir = Paths.get(outputDir.toFile().absolutePath, mavenId.artifactId, mavenId.version).toFile()
+            JarUtils.extractJarFile(it.jarFile.get(), destDir)
+            val classesJar = Paths.get(destDir.absolutePath, "classes.jar")
+            classpathEntries.put(project.name, FileDependency(classesJar.toFile().absolutePath))
+        }
+    }
+
     private fun compile(project: Project, rDirectory: String) : File {
         val sourceFiles = arrayListOf(Paths.get(rDirectory, "R.java").toFile().path)
         val buildDir = Paths.get(project.buildDirectory, "generated", "classes").toFile()
@@ -127,6 +148,13 @@ public class AndroidPlugin @Inject constructor(val javaCompiler: JavaCompiler) :
                 sourceFiles, buildDir)
         return buildDir
     }
+
+    val classpathEntries = HashMultimap.create<String, IClasspathDependency>()
+
+    override fun entriesFor(project: Project): Collection<IClasspathDependency> {
+        return classpathEntries.get(project.name!!) ?: listOf()
+    }
+
 }
 
 

src/main/kotlin/com/beust/kobalt/plugin/java/JavaPlugin.kt

@@ -77,7 +77,7 @@ public class JavaPlugin @Inject constructor(
         val sourceFiles = files.findRecursively(projectDir, project.sourceDirectories.map { File(it) })
                 { it: String -> it.endsWith(".java") }
                         .map { File(projectDir, it).absolutePath }
-        val classpath = calculateClasspath(project.compileDependencies)
+        val classpath = calculateClasspath(project, project.compileDependencies)
         val args = arrayListOf(
                 javadoc!!.absolutePath,
                 "-classpath", classpath.map { it.jarFile.get().absolutePath }.joinToString(File.pathSeparator),
@@ -105,7 +105,7 @@ public class JavaPlugin @Inject constructor(
         val sourceFiles = files.findRecursively(projectDir, project.sourceDirectories.map { File(it) })
             { it: String -> it.endsWith(".java") }
                 .map { File(projectDir, it).absolutePath }
-        val classpath = calculateClasspath(project.compileDependencies)
+        val classpath = calculateClasspath(project, project.compileDependencies)
         return compilePrivate(project, classpath, sourceFiles, buildDir)
     }
 

src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinCompiler.kt

@@ -48,7 +48,7 @@ class KotlinCompiler @Inject constructor(override val localRepo : LocalRepo,
                 getKotlinCompilerJar("kotlin-compiler-embeddable"))
 
         classpathList.addAll(otherClasspath)
-        classpathList.addAll(calculateClasspath(compileDependencies).map { it.id })
+        classpathList.addAll(calculateClasspath(null, compileDependencies).map { it.id })
 
         validateClasspath(classpathList)
 

src/main/kotlin/com/beust/kobalt/plugin/kotlin/KotlinPlugin.kt

@@ -41,7 +41,7 @@ class KotlinPlugin @Inject constructor(
     @Task(name = TASK_COMPILE, description = "Compile the project")
     fun taskCompile(project: Project): TaskResult {
         copyResources(project, JvmCompilerPlugin.SOURCE_SET_MAIN)
-        val classpath = calculateClasspath(project.compileDependencies, project.compileProvidedDependencies)
+        val classpath = calculateClasspath(project, project.compileDependencies, project.compileProvidedDependencies)
 
         val projectDirectory = java.io.File(project.directory)
         val buildDirectory = File(projectDirectory, project.buildDirectory + File.separator + "classes")

src/main/kotlin/com/beust/kobalt/plugin/packaging/JarUtils.kt

@@ -1,6 +1,7 @@
 package com.beust.kobalt.plugin.packaging
 
 import com.beust.kobalt.IFileSpec
+import com.beust.kobalt.file
 import com.beust.kobalt.misc.log
 import java.io.*
 import java.util.jar.JarEntry
@@ -44,7 +45,7 @@ public class JarUtils {
 //
 //                        var len = zis.read(buf)
 //                        while (len >= 0) {
-//                            outStream.write(buf, 0, len);
+//                            outStream.write(buf, 0, len)
 //                            len = zis.read(buf)
 //                        }
 //                    }
@@ -154,5 +155,30 @@ public class JarUtils {
             log(1, "Deduplicated $fromFile.name")
         }
 
+        fun extractJarFile(jarFile: File, destDir: File) {
+            val jar = java.util.jar.JarFile(jarFile)
+            val enumEntries = jar.entries()
+            while (enumEntries.hasMoreElements()) {
+                val file = enumEntries.nextElement() as JarEntry
+                val f = File(destDir.path + java.io.File.separator + file.name)
+                if (file.isDirectory) {
+                    f.mkdir()
+                    continue
+                }
+                var ins: InputStream? = null
+                var fos: OutputStream? = null
+                try {
+                    ins = jar.getInputStream(file)
+                    f.parentFile.mkdirs()
+                    fos = FileOutputStream(f)
+                    while (ins.available() > 0) {
+                        fos.write(ins.read())
+                    }
+                } finally {
+                    fos?.close()
+                    ins?.close()
+                }
+            }
+        }
     }
 }