Start to implement Wiki.

src/main/scala/util/WikiUtil.scala

@@ -0,0 +1,77 @@
+package util
+
+import java.io.File
+import java.util.Date
+import org.eclipse.jgit.api.Git
+import org.apache.commons.io.FileUtils
+
+object WikiUtil {
+  
+  /**
+   * The model for wiki page.
+   * 
+   * @param name the page name
+   * @param content the page content
+   */
+  case class WikiPageInfo(name: String, content: String)
+  
+  /**
+   * The model for wiki page history.
+   * 
+   * @param name the page name
+   * @param committer the committer the committer
+   * @param message the commit message
+   * @param date the commit date
+   */
+  case class WikiPageHistoryInfo(name: String, committer: String, message: String, date: Date)
+  
+  /**
+   * Returns the directory of the wiki repository.
+   */
+  def getWikiRepositoryDir(owner: String, repository: String): File =
+    new File("%s/%s/%s-wiki.git".format(Directory.RepositoryHome, owner, repository))
+  
+  /**
+   * Returns the directory of the wiki working directory which is cloned from the wiki repository.
+   */
+  def getWikiWorkDir(owner: String, repository: String): File = 
+    new File("%s/tmp/%s/%s-wiki".format(Directory.RepositoryHome, owner, repository))
+
+  
+  /**
+   * Returns the wiki page.
+   */
+  def getPage(owner: String, repository: String, pageName: String): Option[WikiPageInfo] = {
+    val git = Git.open(getWikiRepositoryDir(owner, repository))
+    JGitUtil.getFileList(git, "master", ".").find(_.name == pageName).map { file =>
+      WikiPageInfo(file.name, new String(git.getRepository.open(file.id).getBytes, "UTF-8"))
+    }
+  }
+  
+  // TODO 
+  //def getPageHistory(owner: String, repository: String, pageName: String): List[WikiPageHistoryInfo]
+  
+  // TODO synchronized
+  /**
+   * Save the wiki page.
+   */
+  def savePage(owner: String, repository: String, pageName: String, content: String, committer: String, message: String): Unit = {
+    val workDir = getWikiWorkDir(owner, repository)
+    
+    // clone
+    if(!workDir.exists){
+      Git.cloneRepository.setURI(getWikiRepositoryDir(owner, repository).toURI.toString).setDirectory(workDir).call
+    }
+    
+    // write as file
+    val file = new File(workDir, pageName + ".md")
+    FileUtils.writeStringToFile(file, content, "UTF-8")
+    
+    // commit and push
+    val cloned = Git.open(workDir)
+    cloned.add.addFilepattern(file.getName).call
+    cloned.commit.setAuthor(committer, committer + "@devnull").setMessage(message).call
+    cloned.push.call
+  }
+  
+}