RepoProject: read the "upstream" attribute of a project

The manifest spec [1] defines the "upstream" attribute: "name of the
git ref in which a sha1 can be found", when the revision is a
sha1. The parser is ignoring it, but RepoCommand could use it to
populate the "ref=" field of pinned submodules.

Parse the value and store it in the RepoProject.

RepoProject is public API and the current constructors are not
telescopic, so we cannot just add a new constructor with an extra
argument. Use plain getter/setters.j

[1] https://gerrit.googlesource.com/git-repo/+/master/docs/manifest-format.md#Element-project

Change-Id: Ia50b85b95bfd3710f9fbda2050be5950dd686941

2 files changed, 28 insertions, 0 deletions

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/ManifestParser.java b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/ManifestParser.java
index 957b3869f2..7402c760c3 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/ManifestParser.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/ManifestParser.java
@@ -176,6 +176,8 @@ public class ManifestParser extends DefaultHandler {
 					attributes.getValue("groups"));
 			currentProject
 					.setRecommendShallow(attributes.getValue("clone-depth"));
+			currentProject
+					.setUpstream(attributes.getValue("upstream"));
 			break;
 		case "remote":
 			String alias = attributes.getValue("alias");
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoProject.java b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoProject.java
index 8deb7386a6..aa1af21d23 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoProject.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoProject.java
@@ -38,6 +38,7 @@ public class RepoProject implements Comparable<RepoProject> {
 	private final Set<String> groups;
 	private final List<CopyFile> copyfiles;
 	private final List<LinkFile> linkfiles;
+	private String upstream;
 	private String recommendShallow;
 	private String url;
 	private String defaultRevision;
@@ -389,6 +390,31 @@ public class RepoProject implements Comparable<RepoProject> {
 		this.linkfiles.clear();
 	}
 
+	/**
+	 * Return the upstream attribute of the project
+	 *
+	 * @return the upstream value if present, null otherwise.
+	 *
+	 * @since 6.10
+	 */
+	public String getUpstream() {
+		return this.upstream;
+	}
+
+	/**
+	 * Set the upstream attribute of the project
+	 *
+	 * Name of the git ref in which a sha1 can be found, when the revision is a
+	 * sha1.
+	 *
+	 * @param upstream value of the attribute in the manifest
+	 *
+	 * @since 6.10
+	 */
+	void setUpstream(String upstream) {
+		this.upstream = upstream;
+	}
+
 	private String getPathWithSlash() {
 		if (path.endsWith("/")) { //$NON-NLS-1$
 			return path;