[JGIT PATCH 07/21] Allow PackWriter to create a corresponding index file

From

Shawn O. Pearce <spearce@spearce.org>

Date

Jun 29, 2008, 07:59 UTC

Message-ID

<1214726371-93520-8-git-send-email-spearce@spearce.org>

In-Reply-To

<1214726371-93520-7-git-send-email-spearce@spearce.org>

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
 .../src/org/spearce/jgit/lib/PackWriter.java       |   38 ++++++++++++++++++++
 1 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/org.spearce.jgit/src/org/spearce/jgit/lib/PackWriter.java b/org.spearce.jgit/src/org/spearce/jgit/lib/PackWriter.java
index 6adb629..e346668 100644
--- a/org.spearce.jgit/src/org/spearce/jgit/lib/PackWriter.java
+++ b/org.spearce.jgit/src/org/spearce/jgit/lib/PackWriter.java
@@ -192,6 +192,8 @@ public class PackWriter {
 
 	private int maxDeltaDepth = DEFAULT_MAX_DELTA_DEPTH;
 
+	private int outputVersion;
+
 	private boolean thin;
 
 	/**
@@ -348,6 +350,18 @@ public class PackWriter {
 	}
 
 	/**
+	 * Set the pack index file format version this instance will create.
+	 * 
+	 * @param version
+	 *            the version to write. The special version 0 designates the
+	 *            oldest (most compatible) format available for the objects.
+	 * @see PackIndexWriter
+	 */
+	public void setIndexVersion(final int version) {
+		outputVersion = version;
+	}
+
+	/**
 	 * Returns objects number in a pack file that was created by this writer.
 	 *
 	 * @return number of objects in pack.
@@ -482,6 +496,30 @@ public class PackWriter {
 		return ObjectId.fromRaw(md.digest());
 	}
 
+	/**
+	 * Create an index file to match the pack file just written.
+	 * <p>
+	 * This method can only be invoked after {@link #writePack(Iterator)} or
+	 * {@link #writePack(Collection, Collection, boolean, boolean)} has been
+	 * invoked and completed successfully. Writing a corresponding index is an
+	 * optional feature that not all pack users may require.
+	 * 
+	 * @param indexStream
+	 *            output for the index data. Caller is responsible for closing
+	 *            this stream.
+	 * @throws IOException
+	 *             the index data could not be written to the supplied stream.
+	 */
+	public void writeIndex(final OutputStream indexStream) throws IOException {
+		final List<ObjectToPack> list = sortByName();
+		final PackIndexWriter iw;
+		if (outputVersion <= 0)
+			iw = PackIndexWriter.createOldestPossible(indexStream, list);
+		else
+			iw = PackIndexWriter.createVersion(indexStream, outputVersion);
+		iw.write(list, packcsum);
+	}
+
 	private List<ObjectToPack> sortByName() {
 		if (sortedByName == null) {
 			sortedByName = new ArrayList<ObjectToPack>(objectsMap.size());

-- 
1.5.6.74.g8a5e