Add methods to Repository to handle remote names

Instead of requiring the caller to know how to list remote
names or parse remote branch names, add a few utilities for
that.

Change-Id: Ib6b2403532f4abbce594a03c0b9da49d30b19f70
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

1 files changed, 43 insertions, 0 deletions

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java
index c350dddb25..1538d277b1 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Repository.java
@@ -1276,6 +1276,40 @@ public abstract class Repository {
 
 	/**
 	 * @param refName
+	 * @return the remote branch name part of <code>refName</code>, i.e. without
+	 *         the <code>refs/remotes/&lt;remote&gt;</code> prefix, if
+	 *         <code>refName</code> represents a remote tracking branch;
+	 *         otherwise null.
+	 * @since 3.4
+	 */
+	public String shortenRemoteBranchName(String refName) {
+		for (String remote : getRemoteNames()) {
+			String remotePrefix = Constants.R_REMOTES + remote + "/"; //$NON-NLS-1$
+			if (refName.startsWith(remotePrefix))
+				return refName.substring(remotePrefix.length());
+		}
+		return null;
+	}
+
+	/**
+	 * @param refName
+	 * @return the remote name part of <code>refName</code>, i.e. without the
+	 *         <code>refs/remotes/&lt;remote&gt;</code> prefix, if
+	 *         <code>refName</code> represents a remote tracking branch;
+	 *         otherwise null.
+	 * @since 3.4
+	 */
+	public String getRemoteName(String refName) {
+		for (String remote : getRemoteNames()) {
+			String remotePrefix = Constants.R_REMOTES + remote + "/"; //$NON-NLS-1$
+			if (refName.startsWith(remotePrefix))
+				return remote;
+		}
+		return null;
+	}
+
+	/**
+	 * @param refName
 	 * @return a {@link ReflogReader} for the supplied refname, or null if the
 	 *         named ref does not exist.
 	 * @throws IOException
@@ -1613,4 +1647,13 @@ public abstract class Repository {
 			throws IOException {
 		new RebaseTodoFile(this).writeRebaseTodoFile(path, steps, append);
 	}
+
+	/**
+	 * @return the names of all known remotes
+	 * @since 3.4
+	 */
+	public Set<String> getRemoteNames() {
+		return getConfig()
+				.getSubsections(ConfigConstants.CONFIG_REMOTE_SECTION);
+	}
 }