/**
* Returns the existing git repositories for the given file path, following the given traversal
* rule.
*
* @param path expected format /file/{Workspace}/{projectName}[/{path}]
* @return a map of all git repositories found, or <code>null</code> if the provided path format
* doesn't match the expected format.
* @throws CoreException
*/
public static Map<IPath, File> getGitDirs(IPath path, Traverse traverse) throws CoreException {
IPath p = path.removeFirstSegments(1); // remove /file
IFileStore fileStore = NewFileServlet.getFileStore(null, p);
if (fileStore == null) return null;
Map<IPath, File> result = new HashMap<IPath, File>();
File file = fileStore.toLocalFile(EFS.NONE, null);
// jgit can only handle a local file
if (file == null) return result;
switch (traverse) {
case CURRENT:
if (RepositoryCache.FileKey.isGitRepository(file, FS.DETECTED)) {
result.put(new Path(""), file); // $NON-NLS-1$
} else if (RepositoryCache.FileKey.isGitRepository(
new File(file, Constants.DOT_GIT), FS.DETECTED)) {
result.put(new Path(""), new File(file, Constants.DOT_GIT)); // $NON-NLS-1$
}
break;
case GO_UP:
getGitDirsInParents(file, result);
break;
case GO_DOWN:
getGitDirsInChildren(file, p, result);
break;
}
return result;
}
/**
* Returns the file representing the Git repository directory for the given file path or any of
* its parent in the filesystem. If the file doesn't exits, is not a Git repository or an error
* occurred while transforming the given path into a store <code>null</code> is returned.
*
* @param path expected format /file/{Workspace}/{projectName}[/{path}]
* @return the .git folder if found or <code>null</code> the give path cannot be resolved to a
* file or it's not under control of a git repository
* @throws CoreException
*/
public static File getGitDir(IPath path) throws CoreException {
Map<IPath, File> gitDirs = GitUtils.getGitDirs(path, Traverse.GO_UP);
if (gitDirs == null) return null;
Collection<File> values = gitDirs.values();
if (values.isEmpty()) return null;
return values.toArray(new File[] {})[0];
}
private static void getGitDirsInParents(File file, Map<IPath, File> gitDirs) {
int levelUp = 0;
File workspaceRoot = Activator.getDefault().getPlatformLocation().toFile();
while (file != null && !file.getAbsolutePath().equals(workspaceRoot.getAbsolutePath())) {
if (file.exists()) {
if (RepositoryCache.FileKey.isGitRepository(file, FS.DETECTED)) {
gitDirs.put(getPathForLevelUp(levelUp), file);
return;
} else if (RepositoryCache.FileKey.isGitRepository(
new File(file, Constants.DOT_GIT), FS.DETECTED)) {
gitDirs.put(getPathForLevelUp(levelUp), new File(file, Constants.DOT_GIT));
return;
}
}
file = file.getParentFile();
levelUp++;
}
return;
}
/** Recursively walks down a directory tree and collects the paths of all git repositories. */
private static void getGitDirsInChildren(File localFile, IPath path, Map<IPath, File> gitDirs)
throws CoreException {
if (localFile.exists() && localFile.isDirectory()) {
if (RepositoryCache.FileKey.isGitRepository(localFile, FS.DETECTED)) {
gitDirs.put(path.addTrailingSeparator(), localFile);
return;
} else if (RepositoryCache.FileKey.isGitRepository(
new File(localFile, Constants.DOT_GIT), FS.DETECTED)) {
gitDirs.put(path.addTrailingSeparator(), new File(localFile, Constants.DOT_GIT));
return;
}
File[] folders =
localFile.listFiles(
new FileFilter() {
public boolean accept(File file) {
return file.isDirectory() && !file.getName().equals(Constants.DOT_GIT);
}
});
for (File folder : folders) {
getGitDirsInChildren(folder, path.append(folder.getName()), gitDirs);
}
return;
}
}
