Preliminary implementation of server-side forking (issue 137)

The fork mechanism clones the repository , access restrictions, and
other config options.  The app has been updated throughout to handle
personal repositories and to properly display origin/fork links.

In order to fork a repository the user account must have the #fork role,
the origin repository must permit forking, and the user account must
have standard clone permissions to the repository.

Because forking introduces a new user role no existing user accounts can
automatically begin forking a repository.  This is both a pro and a con.

Since the fork has the same access restrictions as the origin repository,
those who can access the origin may also access the fork.  This is intentional
to facilitate integration-manager workflow.  The fork owner does have the
power to completely change the access restrictions of his/her fork.

1 files changed, 28 insertions, 1 deletions

diff --git a/src/com/gitblit/utils/StringUtils.java b/src/com/gitblit/utils/StringUtils.java
index e4407901..07113388 100644
--- a/src/com/gitblit/utils/StringUtils.java
+++ b/src/com/gitblit/utils/StringUtils.java
@@ -367,7 +367,7 @@ public class StringUtils {
 	 * @return the first invalid character found or null if string is acceptable

 	 */

 	public static Character findInvalidCharacter(String name) {

-		char[] validChars = { '/', '.', '_', '-' };

+		char[] validChars = { '/', '.', '_', '-', '~' };

 		for (char c : name.toCharArray()) {

 			if (!Character.isLetterOrDigit(c)) {

 				boolean ok = false;

@@ -660,4 +660,31 @@ public class StringUtils {
 		}

 		return input;

 	}

+	

+	/**

+	 * Returns the first path element of a path string.  If no path separator is

+	 * found in the path, an empty string is returned. 

+	 * 

+	 * @param path

+	 * @return the first element in the path

+	 */

+	public static String getFirstPathElement(String path) {

+		if (path.indexOf('/') > -1) {

+			return path.substring(0, path.indexOf('/')).trim();

+		}

+		return "";

+	}

+	

+	/**

+	 * Returns the last path element of a path string

+	 * 

+	 * @param path

+	 * @return the last element in the path

+	 */

+	public static String getLastPathElement(String path) {

+		if (path.indexOf('/') > -1) {

+			return path.substring(path.lastIndexOf('/') + 1);

+		}

+		return path;

+	}

 }
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