Introduce KobaltContext#filefor(id).

modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/api/KobaltContext.kt

@@ -1,12 +1,16 @@
 package com.beust.kobalt.api
 
 import com.beust.kobalt.Args
+import com.beust.kobalt.KobaltException
 import com.beust.kobalt.Plugins
 import com.beust.kobalt.Variant
 import com.beust.kobalt.internal.IncrementalManager
 import com.beust.kobalt.internal.KobaltSettings
 import com.beust.kobalt.internal.PluginInfo
 import com.beust.kobalt.maven.DependencyManager
+import com.beust.kobalt.maven.MavenId
+import com.beust.kobalt.maven.SimpleDep
+import com.beust.kobalt.maven.aether.KobaltAether
 import com.beust.kobalt.misc.KobaltExecutors
 import java.io.File
 
@@ -22,6 +26,39 @@ class KobaltContext(val args: Args) {
 
     fun findPlugin(name: String) = Plugins.findPlugin(name)
 
+    /**
+     * Files that can be resolved in the local cache.
+     */
+    enum class FileType { JAR, POM, SOURCES, JAVADOC, OTHER }
+
+    /**
+     * @param{id} is the Maven coordinate (e.g. "org.testng:testng:6.9.11"). If you are looking for a file
+     * that is not described by the enum (e.g. "aar"), use OTHER and make sure your @param{id} contains
+     * the fully qualified id (e.g. "com.example:example::aar:1.0").
+     */
+    fun fileFor(id: String, fileType: FileType) : File {
+        val dep = SimpleDep(MavenId.create(id))
+        fun toQualifier(dep: SimpleDep, ext: String, qualifier: String?) =
+                dep.groupId + ":" + dep.artifactId +
+                    ":$ext" +
+                    (if (qualifier != null) ":$qualifier" else "") +
+                    ":" + dep.version
+        val fullId =
+            when (fileType) {
+                FileType.JAR -> toQualifier(dep, "jar", null)
+                FileType.POM -> toQualifier(dep, "pom", null)
+                FileType.SOURCES -> toQualifier(dep, "", "sources")
+                FileType.JAVADOC -> toQualifier(dep, "", "javadoc")
+                FileType.OTHER -> id
+            }
+        val resolved = aether.resolveToArtifact(fullId)
+        if (resolved != null) {
+            return resolved.artifact.file
+        } else {
+            throw KobaltException("Couldn't resolve $id")
+        }
+    }
+
     /** All the projects that are being built during this run */
     val allProjects = arrayListOf<Project>()
 
@@ -37,6 +74,7 @@ class KobaltContext(val args: Args) {
     lateinit var executors: KobaltExecutors
     lateinit var settings: KobaltSettings
     lateinit var incrementalManager: IncrementalManager
+    lateinit var aether: KobaltAether
 }
 
 class InternalContext {

modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/maven/aether/Aether.kt

@@ -57,14 +57,22 @@ class KobaltAether @Inject constructor (val settings: KobaltSettings, val aether
 
     fun resolve(id: String, isTest: Boolean = false): DependencyResult {
         log(ConsoleRepositoryListener.LOG_LEVEL, "Resolving $id")
-        val results = aether.resolve(DefaultArtifact(MavenId.toKobaltId(id)), isTest)
-        if (results.size > 0) {
-            return DependencyResult(AetherDependency(results[0].artifact), results[0].repository.toString())
+        val result = resolveToArtifact(id, isTest)
+        if (result != null) {
+            return DependencyResult(AetherDependency(result.artifact), result.repository.toString())
         } else {
             throw KobaltException("Couldn't resolve $id")
         }
     }
 
+    fun resolveToArtifact(id: String, isTest: Boolean = false): ArtifactResult? {
+        log(ConsoleRepositoryListener.LOG_LEVEL, "Resolving $id")
+        val results = aether.resolve(DefaultArtifact(MavenId.toKobaltId(id)), isTest)
+        if (results.size > 0) {
+            return results[0]
+        } else {
+            return null
+        }
     }
 
     class ExcludeOptionalDependencyFilter : DependencyFilter {
@@ -76,18 +84,19 @@ class ExcludeOptionalDependencyFilter: DependencyFilter {
             return result
         }
     }
+}
 
 @Singleton
 class Aether(val localRepo: File, val settings: KobaltSettings, val eventBus: EventBus) {
     private val system = Booter.newRepositorySystem()
     private val session = Booter.newRepositorySystemSession(system, localRepo, settings, eventBus)
     private val classpathFilter = AndDependencyFilter(
-            ExcludeOptionalDependencyFilter(),
+            KobaltAether.ExcludeOptionalDependencyFilter(),
             DependencyFilterUtils.classpathFilter(JavaScopes.COMPILE),
             DependencyFilterUtils.classpathFilter(JavaScopes.TEST))
 
     private val testClasspathFilter = AndDependencyFilter(
-            ExcludeOptionalDependencyFilter(),
+            KobaltAether.ExcludeOptionalDependencyFilter(),
             DependencyFilterUtils.classpathFilter(JavaScopes.TEST))
 
     private val kobaltRepositories: List<RemoteRepository>
@@ -134,30 +143,6 @@ class Aether(val localRepo: File, val settings: KobaltSettings, val eventBus: Ev
         return result
     }
 
-    private fun oldResolveVErsion() {
-//        val artifact = DefaultArtifact(a.groupId, a.artifactId, null, "[0,)")
-//        val r = system.resolveMetadata(session, kobaltRepositories.map {
-//            MetadataRequest(metadata, it, null).apply {
-//                isFavorLocalRepository = false
-//            }
-//        })
-
-//        val metadata = DefaultMetadata(artifact.groupId, artifact.artifactId, "maven-metadata.xml",
-//                org.eclipse.aether.metadata.Metadata.Nature.RELEASE)
-//
-//        kobaltRepositories.forEach {
-//            val request = MetadataRequest(metadata, it, null).apply {
-//                isFavorLocalRepository = false
-//            }
-//            val md = system.resolveMetadata(session, listOf(request))
-//            if (artifact.groupId.contains("org.testng")) {
-//                println("DONOTCOMMIT")
-//            }
-//            println("Repo: $it " + md)
-//        }
-
-    }
-
     fun resolve(artifact: Artifact, isTest: Boolean = false): List<ArtifactResult> {
         fun manageException(ex: Exception, artifact: Artifact): List<ArtifactResult> {
             if (artifact.extension == "pom") {
@@ -189,7 +174,8 @@ class Aether(val localRepo: File, val settings: KobaltSettings, val eventBus: Ev
 class AetherDependency(val artifact: Artifact) : IClasspathDependency, Comparable<AetherDependency> {
     val aether: Aether get() = Kobalt.INJECTOR.getInstance(Aether::class.java)
 
-    constructor(node: DependencyNode) : this(node.artifact) {}
+    constructor(node: DependencyNode) : this(node.artifact) {
+    }
 
     override val id: String = toId(artifact)
 
@@ -290,3 +276,4 @@ fun main(argv: Array<String>) {
 //
 //    println("Artifact: " + d)
 }
+

src/main/kotlin/com/beust/kobalt/app/BuildFileCompiler.kt

@@ -14,6 +14,8 @@ import com.beust.kobalt.internal.PluginInfo
 import com.beust.kobalt.internal.build.BuildFile
 import com.beust.kobalt.internal.build.VersionFile
 import com.beust.kobalt.maven.DependencyManager
+import com.beust.kobalt.maven.LocalRepo
+import com.beust.kobalt.maven.aether.KobaltAether
 import com.beust.kobalt.misc.KFiles
 import com.beust.kobalt.misc.KobaltExecutors
 import com.beust.kobalt.misc.log
@@ -33,7 +35,8 @@ public class BuildFileCompiler @Inject constructor(@Assisted("buildFiles") val b
         @Assisted val pluginInfo: PluginInfo, val files: KFiles, val plugins: Plugins,
         val dependencyManager: DependencyManager, val pluginProperties: PluginProperties,
         val executors: KobaltExecutors, val buildScriptUtil: BuildScriptUtil, val settings: KobaltSettings,
-        val incrementalManagerFactory: IncrementalManager.IFactory, val args: Args) {
+        val incrementalManagerFactory: IncrementalManager.IFactory, val args: Args,
+        val aether: KobaltAether) {
 
     interface IFactory {
         fun create(@Assisted("buildFiles") buildFiles: List<BuildFile>, pluginInfo: PluginInfo) : BuildFileCompiler
@@ -53,6 +56,7 @@ public class BuildFileCompiler @Inject constructor(@Assisted("buildFiles") val b
         context.executors = executors
         context.settings = settings
         context.incrementalManager = incrementalManagerFactory.create()
+        context.aether = aether
         Kobalt.context = context
 
         //