[JGIT PATCH 05/22] Added ProjectSeeker class.
Signed-off-by: Florian Koeberle <florianskarten@web.de>
---
.../src/org/spearce/jgit/lib/Project.java | 5 +-
.../src/org/spearce/jgit/lib/ProjectSeeker.java | 118 ++++++++++++++++++++
2 files changed, 122 insertions(+), 1 deletions(-)
create mode 100644 org.spearce.jgit/src/org/spearce/jgit/lib/ProjectSeeker.java
diff --git a/org.spearce.jgit/src/org/spearce/jgit/lib/Project.java b/org.spearce.jgit/src/org/spearce/jgit/lib/Project.java
index 6e72486..f6b6a17 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/lib/Project.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/lib/Project.java
@@ -19,7 +19,10 @@ package org.spearce.jgit.lib;
import java.io.File;
/**
- * Represents a project controlled by git. Use {@link ProjectFactory} in order to create an object of this class.
+ * Represents a project controlled by git. Use {@link ProjectFactory} in order to create an object of this class. If you
+ * don't want to create a new repository, but need a new {@link Project}
+ * instance then use {@link ProjectSeeker}.
+ *
* @author Florian Köberle
*
*/
diff --git a/org.spearce.jgit/src/org/spearce/jgit/lib/ProjectSeeker.java b/org.spearce.jgit/src/org/spearce/jgit/lib/ProjectSeeker.java
new file mode 100644
index 0000000..3aa5284
--- /dev/null
+++ b/org.spearce.jgit/src/org/spearce/jgit/lib/ProjectSeeker.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2008 Florian Köberle
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
+ */
+package org.spearce.jgit.lib;
+
+import java.io.File;
+import java.io.IOException;
+import static org.spearce.jgit.lib.GitPathConstants.OBJECTS_DIRECTORY_NAME;
+import static org.spearce.jgit.lib.GitPathConstants.REPOSITORY_DIRECTORY_NAME;
+import static org.spearce.jgit.lib.GitPathConstants.REFS_DIRECTORY_NAME;
+import static org.spearce.jgit.lib.GitPathConstants.HEAD_FILE_NAME;
+
+/**
+ * Use this class to create instances of {@link Project}.
+ *
+ * @author Florian Köberle
+ *
+ */
+public class ProjectSeeker {
+
+ /**
+ * Find the git repository for the current working directory.
+ *
+ * @return a {@link Repository}.
+ * @throws IOException
+ * if the system property user.dir isn't set or if it is
+ * invalid.
+ */
+ public Project findProject() throws IOException {
+ final String workingDirectoryPath = System.getProperty("user.dir");
+ if (workingDirectoryPath == null) {
+ throw new IOException("unable to get working directory");
+ }
+ final File workingDirectoryFile = new File(workingDirectoryPath);
+ if (!workingDirectoryFile.exists()) {
+ throw new IOException("Working directory path is invalid");
+ }
+ return findProject(workingDirectoryFile);
+ }
+
+ /**
+ * Checks if a path is a valid git repository. Works similar like the method
+ * is_git_directory from the original setup.c file.
+ *
+ * @param directory
+ * the path which should be checked.
+ * @return true if the path is a valid git repository.
+ */
+ private boolean isRepository(File directory) {
+ if (!directory.isDirectory()) {
+ return false;
+ }
+
+ final File objectDirectory = new File(directory, OBJECTS_DIRECTORY_NAME);
+ if (!objectDirectory.isDirectory()) {
+ return false;
+ }
+
+ final File refsDirectory = new File(directory, REFS_DIRECTORY_NAME);
+ if (!refsDirectory.isDirectory()) {
+ return false;
+ }
+
+ final File head = new File(directory, HEAD_FILE_NAME);
+ if (!hasValidateHeadRef(head)) {
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * Checks for example if a path is a valid HEAD file. Should do the same
+ * like validate_headref from path.c.
+ *
+ * @param path
+ * is the path of the HEAD file.
+ * @return true if it has a valid head reference.
+ */
+ private static final boolean hasValidateHeadRef(File path) {
+ return true; // TODO stub. view int validate_headref(const char
+ // *path) at path.c
+ }
+
+ private Project findProject(File directory) throws IOException {
+ File currentDirectory = directory.getAbsoluteFile();
+ while (true) {
+ final File commonGitDirectory = new File(directory,
+ REPOSITORY_DIRECTORY_NAME);
+ if (isRepository(commonGitDirectory)) {
+ return new Project(currentDirectory, new Repository(
+ commonGitDirectory));
+ }
+
+ if (isRepository(currentDirectory)) {
+ return new Project(null, new Repository(currentDirectory));
+ }
+ currentDirectory = currentDirectory.getParentFile();
+ if (currentDirectory == null) {
+ throw new IOException("Can't find git repository");
+ }
+ }
+
+ }
+}
--
1.5.2.5