CLogChangedPath::CLogChangedPath
    ( const CRevisionInfoContainer::CChangesIterator& iter
    , const CDictionaryBasedTempPath& logPath)
    : path (iter.GetPath())
    , copyFromPath (NULL, (index_t)NO_INDEX)
    , copyFromRev (0)
{
    flags.nodeKind = static_cast<svn_node_kind_t>(iter->GetPathType());
    flags.action = (DWORD)iter.GetAction() / 4;
    flags.textModifies = static_cast<svn_tristate_t>(iter->GetTextModifies());
    flags.propsModifies = static_cast<svn_tristate_t>(iter->GetPropsModifies());

    // check relevance for log path

    flags.relevantForStartPath = logPath.IsSameOrParentOf (path)
                              || logPath.IsSameOrChildOf (path);

    // set copy-from info, if available

    if (iter.HasFromPath() && (iter.GetFromRevision() != NO_REVISION))
    {
        copyFromPath = iter.GetFromPath();
        copyFromRev = iter.GetFromRevision();
    }
}
bool CLogIteratorBase::InternalHandleCopyAndDelete
    ( const CRevisionInfoContainer::CChangesIterator& first
    , const CRevisionInfoContainer::CChangesIterator& last
    , const CDictionaryBasedPath& revisionRootPath)
{
    // any chance that this revision affects our search path?

    if (!revisionRootPath.IsValid())
        return false;

    if (!revisionRootPath.IsSameOrParentOf (path.GetBasePath()))
        return false;

    // close examination of all changes

    CRevisionInfoContainer::CChangesIterator bestRename = last;
    for ( CRevisionInfoContainer::CChangesIterator iter = first
        ; iter != last
        ; ++iter)
    {
        // most entries will just be file content changes
        // -> skip them efficiently

        CRevisionInfoContainer::TChangeAction action = iter.GetAction();
        if (action == CRevisionInfoContainer::ACTION_CHANGED)
            continue;

        // deletion / copy / rename / replacement
        // -> skip, if our search path is not affected (only some sub-path)

        CDictionaryBasedPath changedPath = iter->GetPath();
        if (!changedPath.IsSameOrParentOf (path.GetBasePath()))
            continue;

        // now, this is serious

        switch (action)
        {
            // rename?

            case CRevisionInfoContainer::ACTION_ADDED:
            case CRevisionInfoContainer::ACTION_REPLACED:
            case CRevisionInfoContainer::ACTION_MOVED:
            case CRevisionInfoContainer::ACTION_MOVEREPLACED:
            {
                if (iter.HasFromPath())
                {
                    // continue search on copy source path

                    // The last copy found will also be the one closed
                    // to our searchPath (there may be multiple renames,
                    // if the base path got renamed).

                    assert ( ((bestRename == last)
                            || (bestRename.GetPathID() < iter.GetPathID()))
                            && "parent ADDs are not in strict order");

                    bestRename = iter;
                }
                else
                {
                    // as part of a copy / rename, the parent path
                    // may have been added in just the same revision.
                    //
                    // example:
                    //
                    // our path: /trunk/file
                    // renamed to
                    // /trunk/project/file
                    //
                    // this can only happen if
                    // /trunk/project
                    // is added first (usually without a copy from path)
                    //
                    // Stop iteration only if we found an ADD of
                    // the exact search path.

                    if (path == changedPath)
                    {
                        // the path we are following actually started here.

                        addRevision = revision;
                        addPath = path;

                        revision = (revision_t)NO_REVISION;
                        path.Invalidate();
                        return true;
                    }
                }
            }
            break;

            case CRevisionInfoContainer::ACTION_DELETED:
            {
                // deletions are possible!
                // but we don't need to do anything with them.
            }
            break;

            // there should be no other

            default:
            {
                assert (0);
            }
        }
    }

    // there was a rename / copy from some older path,rev

    if (bestRename != last)
    {
        addRevision = revision;
        addPath = path;

        path = path.ReplaceParent ( bestRename.GetPath()
                                  , bestRename.GetFromPath());
        revision = bestRename.GetFromRevision();

        return true;
    }

    // all fine, no special action required

    return false;
}