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copied!<p>I'm using the following heuristic (to be improved further):</p> <pre><code>private final static String INFO_REFS_PATH = "info/refs"; public static boolean isValidRepository(URIish repoUri) { if (repoUri.isRemote()) { return isValidRemoteRepository(repoUri); } else { return isValidLocalRepository(repoUri); } } private static boolean isValidLocalRepository(URIish repoUri) { boolean result; try { result = new FileRepository(repoUri.getPath()).getObjectDatabase().exists(); } catch (IOException e) { result = false; } return result; } private static boolean isValidRemoteRepository(URIish repoUri) { boolean result; if (repoUri.getScheme().toLowerCase().startsWith("http") ) { String path = repoUri.getPath(); String newPath = path.endsWith("/")? path + INFO_REFS_PATH : path + "/" + INFO_REFS_PATH; URIish checkUri = repoUri.setPath(newPath); InputStream ins = null; try { URLConnection conn = new URL(checkUri.toString()).openConnection(); conn.setReadTimeout(NETWORK_TIMEOUT_MSEC); ins = conn.getInputStream(); result = true; } catch (Exception e) { result = false; } finally { try { ins.close(); } catch (Exception e) { /* ignore */ } } } else if (repoUri.getScheme().toLowerCase().startsWith("ssh") ) { RemoteSession ssh = null; Process exec = null; try { ssh = SshSessionFactory.getInstance().getSession(repoUri, null, FS.detect(), 5000); exec = ssh.exec("cd " + repoUri.getPath() +"; git rev-parse --git-dir", 5000); Integer exitValue = null; do { try { exitValue = exec.exitValue(); } catch (Exception e) { try{Thread.sleep(1000);}catch(Exception ee){} } } while (exitValue == null); result = exitValue == 0; } catch (Exception e) { result = false; } finally { try { exec.destroy(); } catch (Exception e) { /* ignore */ } try { ssh.disconnect(); } catch (Exception e) { /* ignore */ } } } else { // TODO need to implement tests for other schemas result = true; } return result; } </code></pre> <p>This works well with bare and non-bare repositories.</p> <p>Please note that there seems to be a problem with the URIish.isRemote() method. When you create an URIish from a file-URL, the host is not null but an empty string! URIish.isRemote() however returns true, if the host field is not null...</p> <p>EDIT: Added ssh support to the isValidRemoteRepository() method. </p>

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