Added groups support to repo subcommand.

Change-Id: Id0e7663b6ac4f6938fdcacaf2158107b6285fc25
Signed-off-by: Yuxuan 'fishy' Wang <fishywang@google.com>

org.eclipse.jgit.pgm.test/tst/org/eclipse/jgit/pgm/RepoTest.java

@@ -43,6 +43,7 @@
 package org.eclipse.jgit.pgm;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 import java.io.BufferedReader;
@@ -57,17 +58,47 @@ import org.junit.Before;
 import org.junit.Test;
 
 public class RepoTest extends CLIRepositoryTestCase {
-	private Repository remoteDb;
+	private Repository defaultDb;
+	private Repository notDefaultDb;
+	private Repository groupADb;
+	private Repository groupBDb;
+
+	private String rootUri;
+	private String defaultUri;
+	private String notDefaultUri;
+	private String groupAUri;
+	private String groupBUri;
 
 	@Override
 	@Before
 	public void setUp() throws Exception {
 		super.setUp();
-		remoteDb = createWorkRepository();
-		Git git = new Git(remoteDb);
-		JGitTestUtil.writeTrashFile(remoteDb, "hello.txt", "world");
+
+		defaultDb = createWorkRepository();
+		Git git = new Git(defaultDb);
+		JGitTestUtil.writeTrashFile(defaultDb, "hello.txt", "world");
 		git.add().addFilepattern("hello.txt").call();
 		git.commit().setMessage("Initial commit").call();
+
+		notDefaultDb = createWorkRepository();
+		git = new Git(notDefaultDb);
+		JGitTestUtil.writeTrashFile(notDefaultDb, "world.txt", "hello");
+		git.add().addFilepattern("world.txt").call();
+		git.commit().setMessage("Initial commit").call();
+
+		groupADb = createWorkRepository();
+		git = new Git(groupADb);
+		JGitTestUtil.writeTrashFile(groupADb, "a.txt", "world");
+		git.add().addFilepattern("a.txt").call();
+		git.commit().setMessage("Initial commit").call();
+
+		groupBDb = createWorkRepository();
+		git = new Git(groupBDb);
+		JGitTestUtil.writeTrashFile(groupBDb, "b.txt", "world");
+		git.add().addFilepattern("b.txt").call();
+		git.commit().setMessage("Initial commit").call();
+
+		resolveRelativeUris();
 	}
 
 	@Test
@@ -77,20 +108,59 @@ public class RepoTest extends CLIRepositoryTestCase {
 			.append("<manifest>")
 			.append("<remote name=\"remote1\" fetch=\".\" />")
 			.append("<default revision=\"master\" remote=\"remote1\" />")
-			.append("<project path=\"foo\" name=\".\" />")
+			.append("<project path=\"foo\" name=\"")
+			.append(defaultUri)
+			.append("\" groups=\"a,test\" />")
+			.append("<project path=\"bar\" name=\"")
+			.append(notDefaultUri)
+			.append("\" groups=\"notdefault\" />")
+			.append("<project path=\"a\" name=\"")
+			.append(groupAUri)
+			.append("\" groups=\"a\" />")
+			.append("<project path=\"b\" name=\"")
+			.append(groupBUri)
+			.append("\" groups=\"b\" />")
 			.append("</manifest>");
 		writeTrashFile("manifest.xml", xmlContent.toString());
 		StringBuilder cmd = new StringBuilder("git repo --base-uri=\"")
-			.append(remoteDb.getDirectory().toURI().toString())
-			.append("\" \"")
+			.append(rootUri)
+			.append("\" --groups=\"all,-a\" \"")
 			.append(db.getWorkTree().getAbsolutePath())
 			.append("/manifest.xml\"");
 		execute(cmd.toString());
-		File hello = new File(db.getWorkTree(), "foo/hello.txt");
-		assertTrue("submodule was checked out.", hello.exists());
-		BufferedReader reader = new BufferedReader(new FileReader(hello));
-		String content = reader.readLine();
-		reader.close();
-		assertEquals("submodule content is as expected.", "world", content);
+
+		File file = new File(db.getWorkTree(), "foo/hello.txt");
+		assertFalse("\"all,-a\" doesn't have foo", file.exists());
+		file = new File(db.getWorkTree(), "bar/world.txt");
+		assertTrue("\"all,-a\" has bar", file.exists());
+		file = new File(db.getWorkTree(), "a/a.txt");
+		assertFalse("\"all,-a\" doesn't have a", file.exists());
+		file = new File(db.getWorkTree(), "b/b.txt");
+		assertTrue("\"all,-a\" has have b", file.exists());
+	}
+
+	private void resolveRelativeUris() {
+		// Find the longest common prefix ends with "/" as rootUri.
+		defaultUri = defaultDb.getDirectory().toURI().toString();
+		notDefaultUri = notDefaultDb.getDirectory().toURI().toString();
+		groupAUri = groupADb.getDirectory().toURI().toString();
+		groupBUri = groupBDb.getDirectory().toURI().toString();
+		int start = 0;
+		while (start <= defaultUri.length()) {
+			int newStart = defaultUri.indexOf('/', start + 1);
+			String prefix = defaultUri.substring(0, newStart);
+			if (!notDefaultUri.startsWith(prefix) ||
+					!groupAUri.startsWith(prefix) ||
+					!groupBUri.startsWith(prefix)) {
+				start++;
+				rootUri = defaultUri.substring(0, start);
+				defaultUri = defaultUri.substring(start);
+				notDefaultUri = notDefaultUri.substring(start);
+				groupAUri = groupAUri.substring(start);
+				groupBUri = groupBUri.substring(start);
+				return;
+			}
+			start = newStart;
+		}
 	}
 }

org.eclipse.jgit.pgm/resources/org/eclipse/jgit/pgm/internal/CLIText.properties

@@ -278,6 +278,7 @@ usage_forceCheckout=when switching branches, proceed even if the index or the wo
 usage_forceCreateBranchEvenExists=force create branch even exists
 usage_forceReplacingAnExistingTag=force replacing an existing tag
 usage_getAndSetOptions=Get and set repository or global options
+usage_groups=Restrict manifest projects to ones with specified group(s), use "-" for excluding [default|all|G1,G2,G3|G4,-G5,-G6]
 usage_hostnameOrIpToListenOn=hostname (or ip) to listen on
 usage_indexFileFormatToCreate=index file format to create
 usage_ignoreWhitespace=ignore all whitespace

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/Repo.java

@@ -52,6 +52,9 @@ class Repo extends TextBuiltin {
 	@Option(name = "--base-uri", aliases = { "-u" }, usage = "usage_baseUri")
 	private String uri;
 
+	@Option(name = "--groups", aliases = { "-g" }, usage = "usage_groups")
+	private String groups = "default"; //$NON-NLS-1$
+
 	@Argument(required = true, usage = "usage_pathToXml")
 	private String path;
 
@@ -60,6 +63,7 @@ class Repo extends TextBuiltin {
 		new RepoCommand(db)
 			.setURI(uri)
 			.setPath(path)
+			.setGroups(groups)
 			.call();
 	}
 }

org.eclipse.jgit.test/tst/org/eclipse/jgit/gitrepo/RepoCommandTest.java

@@ -43,6 +43,7 @@
 package org.eclipse.jgit.gitrepo;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 import java.io.BufferedReader;
@@ -57,16 +58,45 @@ import org.junit.Test;
 
 public class RepoCommandTest extends RepositoryTestCase {
 
-	private Repository remoteDb;
+	private Repository defaultDb;
+	private Repository notDefaultDb;
+	private Repository groupADb;
+	private Repository groupBDb;
+
+	private String rootUri;
+	private String defaultUri;
+	private String notDefaultUri;
+	private String groupAUri;
+	private String groupBUri;
 
 	public void setUp() throws Exception {
 		super.setUp();
 
-		remoteDb = createWorkRepository();
-		Git git = new Git(remoteDb);
-		JGitTestUtil.writeTrashFile(remoteDb, "hello.txt", "world");
+		defaultDb = createWorkRepository();
+		Git git = new Git(defaultDb);
+		JGitTestUtil.writeTrashFile(defaultDb, "hello.txt", "world");
 		git.add().addFilepattern("hello.txt").call();
 		git.commit().setMessage("Initial commit").call();
+
+		notDefaultDb = createWorkRepository();
+		git = new Git(notDefaultDb);
+		JGitTestUtil.writeTrashFile(notDefaultDb, "world.txt", "hello");
+		git.add().addFilepattern("world.txt").call();
+		git.commit().setMessage("Initial commit").call();
+
+		groupADb = createWorkRepository();
+		git = new Git(groupADb);
+		JGitTestUtil.writeTrashFile(groupADb, "a.txt", "world");
+		git.add().addFilepattern("a.txt").call();
+		git.commit().setMessage("Initial commit").call();
+
+		groupBDb = createWorkRepository();
+		git = new Git(groupBDb);
+		JGitTestUtil.writeTrashFile(groupBDb, "b.txt", "world");
+		git.add().addFilepattern("b.txt").call();
+		git.commit().setMessage("Initial commit").call();
+
+		resolveRelativeUris();
 	}
 
 	@Test
@@ -76,12 +106,14 @@ public class RepoCommandTest extends RepositoryTestCase {
 			.append("<manifest>")
 			.append("<remote name=\"remote1\" fetch=\".\" />")
 			.append("<default revision=\"master\" remote=\"remote1\" />")
-			.append("<project path=\"foo\" name=\".\" />")
+			.append("<project path=\"foo\" name=\"")
+			.append(defaultUri)
+			.append("\" />")
 			.append("</manifest>");
 		writeTrashFile("manifest.xml", xmlContent.toString());
 		RepoCommand command = new RepoCommand(db);
 		command.setPath(db.getWorkTree().getAbsolutePath() + "/manifest.xml")
-			.setURI(remoteDb.getDirectory().toURI().toString())
+			.setURI(rootUri)
 			.call();
 		File hello = new File(db.getWorkTree(), "foo/hello.txt");
 		assertTrue("submodule was checked out", hello.exists());
@@ -90,4 +122,84 @@ public class RepoCommandTest extends RepositoryTestCase {
 		reader.close();
 		assertEquals("submodule content is as expected.", "world", content);
 	}
+
+	@Test
+	public void testRepoManifestGroups() throws Exception {
+		StringBuilder xmlContent = new StringBuilder();
+		xmlContent.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n")
+			.append("<manifest>")
+			.append("<remote name=\"remote1\" fetch=\".\" />")
+			.append("<default revision=\"master\" remote=\"remote1\" />")
+			.append("<project path=\"foo\" name=\"")
+			.append(defaultUri)
+			.append("\" groups=\"a,test\" />")
+			.append("<project path=\"bar\" name=\"")
+			.append(notDefaultUri)
+			.append("\" groups=\"notdefault\" />")
+			.append("<project path=\"a\" name=\"")
+			.append(groupAUri)
+			.append("\" groups=\"a\" />")
+			.append("<project path=\"b\" name=\"")
+			.append(groupBUri)
+			.append("\" groups=\"b\" />")
+			.append("</manifest>");
+
+		// default should have foo, a & b
+		Repository localDb = createWorkRepository();
+		JGitTestUtil.writeTrashFile(localDb, "manifest.xml", xmlContent.toString());
+		RepoCommand command = new RepoCommand(localDb);
+		command.setPath(localDb.getWorkTree().getAbsolutePath() + "/manifest.xml")
+			.setURI(rootUri)
+			.call();
+		File file = new File(localDb.getWorkTree(), "foo/hello.txt");
+		assertTrue("default has foo", file.exists());
+		file = new File(localDb.getWorkTree(), "bar/world.txt");
+		assertFalse("default doesn't have bar", file.exists());
+		file = new File(localDb.getWorkTree(), "a/a.txt");
+		assertTrue("default has a", file.exists());
+		file = new File(localDb.getWorkTree(), "b/b.txt");
+		assertTrue("default has b", file.exists());
+
+		// all,-a should have bar & b
+		localDb = createWorkRepository();
+		JGitTestUtil.writeTrashFile(localDb, "manifest.xml", xmlContent.toString());
+		command = new RepoCommand(localDb);
+		command.setPath(localDb.getWorkTree().getAbsolutePath() + "/manifest.xml")
+			.setURI(rootUri)
+			.setGroups("all,-a")
+			.call();
+		file = new File(localDb.getWorkTree(), "foo/hello.txt");
+		assertFalse("\"all,-a\" doesn't have foo", file.exists());
+		file = new File(localDb.getWorkTree(), "bar/world.txt");
+		assertTrue("\"all,-a\" has bar", file.exists());
+		file = new File(localDb.getWorkTree(), "a/a.txt");
+		assertFalse("\"all,-a\" doesn't have a", file.exists());
+		file = new File(localDb.getWorkTree(), "b/b.txt");
+		assertTrue("\"all,-a\" has have b", file.exists());
+	}
+
+	private void resolveRelativeUris() {
+		// Find the longest common prefix ends with "/" as rootUri.
+		defaultUri = defaultDb.getDirectory().toURI().toString();
+		notDefaultUri = notDefaultDb.getDirectory().toURI().toString();
+		groupAUri = groupADb.getDirectory().toURI().toString();
+		groupBUri = groupBDb.getDirectory().toURI().toString();
+		int start = 0;
+		while (start <= defaultUri.length()) {
+			int newStart = defaultUri.indexOf('/', start + 1);
+			String prefix = defaultUri.substring(0, newStart);
+			if (!notDefaultUri.startsWith(prefix) ||
+					!groupAUri.startsWith(prefix) ||
+					!groupBUri.startsWith(prefix)) {
+				start++;
+				rootUri = defaultUri.substring(0, start);
+				defaultUri = defaultUri.substring(start);
+				notDefaultUri = notDefaultUri.substring(start);
+				groupAUri = groupAUri.substring(start);
+				groupBUri = groupBUri.substring(start);
+				return;
+			}
+			start = newStart;
+		}
+	}
 }

org.eclipse.jgit/src/org/eclipse/jgit/gitrepo/RepoCommand.java

@@ -48,9 +48,12 @@ import java.net.URI;
 import java.net.URISyntaxException;
 import java.text.MessageFormat;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import org.eclipse.jgit.api.GitCommand;
 import org.eclipse.jgit.api.SubmoduleAddCommand;
@@ -79,18 +82,22 @@ import org.xml.sax.helpers.XMLReaderFactory;
 public class RepoCommand extends GitCommand<Void> {
 
 	private String path;
-
 	private String uri;
+	private String groups;
 
 	private ProgressMonitor monitor;
 
 	private static class Project {
 		final String name;
 		final String path;
+		final Set<String> groups;
 
-		Project(String name, String path) {
+		Project(String name, String path, String groups) {
 			this.name = name;
 			this.path = path;
+			this.groups = new HashSet<String>();
+			if (groups != null && groups.length() > 0)
+				this.groups.addAll(Arrays.asList(groups.split(","))); //$NON-NLS-1$
 		}
 	}
 
@@ -100,14 +107,29 @@ public class RepoCommand extends GitCommand<Void> {
 		private final String baseUrl;
 		private final Map<String, String> remotes;
 		private final List<Project> projects;
+		private final Set<String> plusGroups;
+		private final Set<String> minusGroups;
 		private String defaultRemote;
 
-		XmlManifest(RepoCommand command, String filename, String baseUrl) {
+		XmlManifest(RepoCommand command, String filename, String baseUrl, String groups) {
 			this.command = command;
 			this.filename = filename;
 			this.baseUrl = baseUrl;
 			remotes = new HashMap<String, String>();
 			projects = new ArrayList<Project>();
+			plusGroups = new HashSet<String>();
+			minusGroups = new HashSet<String>();
+			if (groups == null || groups.length() == 0 || groups.equals("default")) { //$NON-NLS-1$
+				// default means "all,-notdefault"
+				minusGroups.add("notdefault"); //$NON-NLS-1$
+			} else {
+				for (String group : groups.split(",")) { //$NON-NLS-1$
+					if (group.startsWith("-")) //$NON-NLS-1$
+						minusGroups.add(group.substring(1));
+					else
+						plusGroups.add(group);
+				}
+			}
 		}
 
 		void read() throws IOException {
@@ -137,13 +159,17 @@ public class RepoCommand extends GitCommand<Void> {
 				String localName,
 				String qName,
 				Attributes attributes) throws SAXException {
-			if ("project".equals(qName)) //$NON-NLS-1$
-				projects.add(new Project(attributes.getValue("name"), attributes.getValue("path"))); //$NON-NLS-1$ //$NON-NLS-2$
-			else if ("remote".equals(qName)) //$NON-NLS-1$
-				remotes.put(attributes.getValue("name"), attributes.getValue("fetch")); //$NON-NLS-1$ //$NON-NLS-2$
-			else if ("default".equals(qName)) //$NON-NLS-1$
+			if ("project".equals(qName)) { //$NON-NLS-1$
+				projects.add(new Project( //$NON-NLS-1$
+							attributes.getValue("name"), //$NON-NLS-1$
+							attributes.getValue("path"), //$NON-NLS-1$
+							attributes.getValue("groups"))); //$NON-NLS-1$
+			} else if ("remote".equals(qName)) { //$NON-NLS-1$
+				remotes.put(attributes.getValue("name"), //$NON-NLS-1$
+						attributes.getValue("fetch")); //$NON-NLS-1$
+			} else if ("default".equals(qName)) { //$NON-NLS-1$
 				defaultRemote = attributes.getValue("remote"); //$NON-NLS-1$
-			else if ("copyfile".equals(qName)) { //$NON-NLS-1$
+			} else if ("copyfile".equals(qName)) { //$NON-NLS-1$
 				// TODO(fishywang): Handle copyfile. Do nothing for now.
 			}
 		}
@@ -162,12 +188,32 @@ public class RepoCommand extends GitCommand<Void> {
 				throw new SAXException(e);
 			}
 			for (Project proj : projects) {
+				if (inGroups(proj)) {
 					String url = remoteUrl + proj.name;
 					command.addSubmodule(url, proj.path);
 				}
 			}
 		}
 
+		boolean inGroups(Project proj) {
+			for (String group : minusGroups) {
+				if (proj.groups.contains(group)) {
+					// minus groups have highest priority.
+					return false;
+				}
+			}
+			if (plusGroups.isEmpty() || plusGroups.contains("all")) { //$NON-NLS-1$
+				// empty plus groups means "all"
+				return true;
+			}
+			for (String group : plusGroups) {
+				if (proj.groups.contains(group))
+					return true;
+			}
+			return false;
+		}
+	}
+
 	private static class ManifestErrorException extends GitAPIException {
 		ManifestErrorException(Throwable cause) {
 			super(RepoText.get().invalidManifest, cause);
@@ -204,6 +250,17 @@ public class RepoCommand extends GitCommand<Void> {
 		return this;
 	}
 
+	/**
+	 * Set groups to sync
+	 *
+	 * @param groups groups separated by comma, examples: default|all|G1,-G2,-G3
+	 * @return this command
+	 */
+	public RepoCommand setGroups(final String groups) {
+		this.groups = groups;
+		return this;
+	}
+
 	/**
 	 * The progress monitor associated with the clone operation. By default,
 	 * this is set to <code>NullProgressMonitor</code>
@@ -225,7 +282,7 @@ public class RepoCommand extends GitCommand<Void> {
 		if (uri == null || uri.length() == 0)
 			throw new IllegalArgumentException(JGitText.get().uriNotConfigured);
 
-		XmlManifest manifest = new XmlManifest(this, path, uri);
+		XmlManifest manifest = new XmlManifest(this, path, uri, groups);
 		try {
 			manifest.read();
 		} catch (IOException e) {
@@ -236,11 +293,13 @@ public class RepoCommand extends GitCommand<Void> {
 	}
 
 	private void addSubmodule(String url, String name) throws SAXException {
-		SubmoduleAddCommand add = new SubmoduleAddCommand(repo);
+		SubmoduleAddCommand add = new SubmoduleAddCommand(repo)
+			.setPath(name)
+			.setURI(url);
 		if (monitor != null)
 			add.setProgressMonitor(monitor);
 		try {
-			add.setPath(name).setURI(url).call();
+			add.call();
 		} catch (GitAPIException e) {
 			throw new SAXException(e);
 		}