Example usage for org.eclipse.jgit.treewalk TreeWalk isRecursive

Introduction

In this page you can find the example usage for org.eclipse.jgit.treewalk TreeWalk isRecursive.

Prototype

public boolean isRecursive() 

Source Link

Document

Is this walker automatically entering into subtrees?

Usage

From source file:org.eclipse.egit.core.synchronize.ThreeWayDiffEntry.java

License:Open Source License

/**
 * Converts the TreeWalk into TreeWayDiffEntry headers.
 *
 * @param walk//  w  ww.  j  av  a 2s .  c o  m
 *            the TreeWalk to walk through. Must have exactly three trees in
 *            this order: local, base and remote and can't be recursive.
 * @return headers describing the changed file.
 * @throws IOException
 *             the repository cannot be accessed.
 * @throws IllegalArgumentException
 *             when {@code walk} doen't have exactly three trees, or when
 *             {@code walk} is recursive
 */
public static List<ThreeWayDiffEntry> scan(TreeWalk walk) throws IOException {
    if (walk.getTreeCount() != 3 && walk.getTreeCount() != 4)
        throw new IllegalArgumentException("TreeWalk need to have three or four trees"); //$NON-NLS-1$
    if (walk.isRecursive())
        throw new IllegalArgumentException("TreeWalk shouldn't be recursive."); //$NON-NLS-1$

    List<ThreeWayDiffEntry> r = new ArrayList<ThreeWayDiffEntry>();
    MutableObjectId idBuf = new MutableObjectId();
    while (walk.next()) {
        ThreeWayDiffEntry e = new ThreeWayDiffEntry();

        walk.getObjectId(idBuf, 0);
        e.localId = AbbreviatedObjectId.fromObjectId(idBuf);

        walk.getObjectId(idBuf, 1);
        e.baseId = AbbreviatedObjectId.fromObjectId(idBuf);

        walk.getObjectId(idBuf, 2);
        e.remoteId = AbbreviatedObjectId.fromObjectId(idBuf);

        boolean localSameAsBase = e.localId.equals(e.baseId);
        if (!A_ZERO.equals(e.localId) && localSameAsBase && e.baseId.equals(e.remoteId))
            continue;

        e.path = walk.getPathString();
        boolean localIsMissing = walk.getFileMode(0) == FileMode.MISSING;
        boolean baseIsMissing = walk.getFileMode(1) == FileMode.MISSING;
        boolean remoteIsMissing = walk.getFileMode(2) == FileMode.MISSING;

        if (localIsMissing || baseIsMissing || remoteIsMissing) {
            if (!localIsMissing && baseIsMissing && remoteIsMissing) {
                e.direction = Direction.OUTGOING;
                e.changeType = ChangeType.ADD;
            } else if (localIsMissing && baseIsMissing && !remoteIsMissing) {
                e.direction = Direction.INCOMING;
                e.changeType = ChangeType.ADD;
            } else if (!localIsMissing && !baseIsMissing && remoteIsMissing) {
                e.direction = Direction.INCOMING;
                e.changeType = ChangeType.DELETE;
            } else if (localIsMissing && !baseIsMissing && !remoteIsMissing) {
                e.direction = Direction.OUTGOING;
                e.changeType = ChangeType.DELETE;
            } else {
                e.direction = Direction.CONFLICTING;
                e.changeType = ChangeType.MODIFY;
            }
        } else {
            if (localSameAsBase && !e.localId.equals(e.remoteId))
                e.direction = Direction.INCOMING;
            else if (e.remoteId.equals(e.baseId) && !e.remoteId.equals(e.localId))
                e.direction = Direction.OUTGOING;
            else
                e.direction = Direction.CONFLICTING;

            e.changeType = ChangeType.MODIFY;
        }

        r.add(e);
        if (walk.isSubtree()) {
            e.isTree = true;
            walk.enterSubtree();
        }
    }

    return r;
}

---