void writeTo(final OutputStream os) throws IOException { final MessageDigest foot = Constants.newMessageDigest(); final DigestOutputStream dos = new DigestOutputStream(os, foot); boolean extended = false; for (int i = 0; i < entryCnt; i++) extended |= sortedEntries[i].isExtended(); // Write the header. // final byte[] tmp = new byte[128]; System.arraycopy(SIG_DIRC, 0, tmp, 0, SIG_DIRC.length); NB.encodeInt32(tmp, 4, extended ? 3 : 2); NB.encodeInt32(tmp, 8, entryCnt); dos.write(tmp, 0, 12); // Write the individual file entries. final int smudge_s; final int smudge_ns; if (myLock != null) { // For new files we need to smudge the index entry // if they have been modified "now". Ideally we'd // want the timestamp when we're done writing the index, // so we use the current timestamp as a approximation. myLock.createCommitSnapshot(); snapshot = myLock.getCommitSnapshot(); smudge_s = (int) (snapshot.lastModified() / 1000); smudge_ns = ((int) (snapshot.lastModified() % 1000)) * 1000000; } else { // Used in unit tests only smudge_ns = 0; smudge_s = 0; } // Check if tree is non-null here since calling updateSmudgedEntries // will automatically build it via creating a DirCacheIterator final boolean writeTree = tree != null; if (repository != null && entryCnt > 0) updateSmudgedEntries(); for (int i = 0; i < entryCnt; i++) { final DirCacheEntry e = sortedEntries[i]; if (e.mightBeRacilyClean(smudge_s, smudge_ns)) e.smudgeRacilyClean(); e.write(dos); } if (writeTree) { final TemporaryBuffer bb = new TemporaryBuffer.LocalFile(); tree.write(tmp, bb); bb.close(); NB.encodeInt32(tmp, 0, EXT_TREE); NB.encodeInt32(tmp, 4, (int) bb.length()); dos.write(tmp, 0, 8); bb.writeTo(dos, null); } writeIndexChecksum = foot.digest(); os.write(writeIndexChecksum); os.close(); }