Start to implement WikiController.

Changed controllers from servlet to filter by mapping flexibility.

src/main/scala/app/CreateRepositoryController.scala

@@ -0,0 +1,83 @@
+package app
+
+import util.Directory._
+import org.scalatra._
+import java.io.File
+import org.eclipse.jgit.api.Git
+import org.eclipse.jgit.lib._
+import org.apache.commons.io._
+import jp.sf.amateras.scalatra.forms._
+
+/**
+ * Creates new repository.
+ */
+class CreateRepositoryController extends ControllerBase {
+  
+  case class RepositoryCreationForm(name: String, description: String)
+  
+  val form = mapping(
+    "name"        -> trim(label("Repository name", text(required, maxlength(40), repository))), 
+    "description" -> trim(label("Description"    , text()))
+  )(RepositoryCreationForm.apply)
+  
+  /**
+   * Show the new repository form.
+   */
+  get("/") {
+    html.newrepo()
+  }
+  
+  /**
+   * Create new repository.
+   */
+  post("/", form) { form =>
+    val gitdir = getRepositoryDir(LoginUser, form.name)
+    val repository = new RepositoryBuilder().setGitDir(gitdir).setBare.build
+
+    repository.create
+
+    val config = repository.getConfig
+    config.setBoolean("http", null, "receivepack", true)
+    config.save
+
+    val tmpdir = getInitRepositoryDir(LoginUser, form.name)
+    try {
+      // Clone the repository
+      Git.cloneRepository.setURI(gitdir.toURI.toString).setDirectory(tmpdir).call
+    
+      // Create README.md
+      FileUtils.writeStringToFile(new File(tmpdir, "README.md"), if(form.description.nonEmpty){
+          form.name + "\n===============\n\n" + form.description
+        } else {
+          form.name + "\n===============\n"
+        }, "UTF-8")
+  
+      val git = Git.open(tmpdir)
+      git.add.addFilepattern("README.md").call
+      git.commit.setMessage("Initial commit").call
+      git.push.call
+    
+    } finally {
+      FileUtils.deleteDirectory(tmpdir)
+    }
+    
+    // redirect to the repository
+    redirect("/%s/%s".format(LoginUser, form.name))
+  }
+  
+  /**
+   * Constraint for the repository name.
+   */
+  def repository: Constraint = new Constraint(){
+    def validate(name: String, value: String): Option[String] = {
+      if(!value.matches("^[a-z0-9\\-_]+$")){
+        Some("Repository name contains invalid character.")
+      } else if(getRepositories(LoginUser).contains(value)){
+        Some("Repository already exists.")
+      } else {
+        None
+      }
+    }
+  }
+  
+}