@Override
    protected void preliminary() throws SVNException {
      SVNWCClient wcClient = myVcs.createWCClient();
      myInfo =
          wcClient.doInfo(new File(myFile.getIOFile().getAbsolutePath()), SVNRevision.UNDEFINED);
      wcClient.setEventHandler(
          new ISVNEventHandler() {
            public void handleEvent(SVNEvent event, double progress) throws SVNException {}

            public void checkCancelled() throws SVNCancelException {
              myPI.checkCanceled();
            }
          });
      if (myInfo == null || myInfo.getRepositoryRootURL() == null) {
        myException =
            new VcsException("File ''{0}'' is not under version control" + myFile.getIOFile());
        return;
      }
      if (myInfo.getURL() == null) {
        myException =
            new VcsException("File " + myFile.getPath() + " is not under Subversion control");
        return;
      }
      myUrl = myInfo.getURL().toString();
    }
  private void collectLogEntries(
      final ProgressIndicator indicator,
      FilePath file,
      VcsException[] exception,
      final Consumer<VcsFileRevision> result,
      final Ref<Boolean> supports15Ref)
      throws SVNException, VcsException {
    SVNWCClient wcClient = myVcs.createWCClient();
    SVNInfo info =
        wcClient.doInfo(new File(file.getIOFile().getAbsolutePath()), SVNRevision.UNDEFINED);
    wcClient.setEventHandler(
        new ISVNEventHandler() {
          public void handleEvent(SVNEvent event, double progress) throws SVNException {}

          public void checkCancelled() throws SVNCancelException {
            indicator.checkCanceled();
          }
        });
    if (info == null || info.getRepositoryRootURL() == null) {
      exception[0] =
          new VcsException("File ''{0}'' is not under version control" + file.getIOFile());
      return;
    }
    final String url = info.getURL() == null ? null : info.getURL().toString();
    String relativeUrl = url;
    final SVNURL repoRootURL = info.getRepositoryRootURL();

    final String root = repoRootURL.toString();
    if (url != null && url.startsWith(root)) {
      relativeUrl = url.substring(root.length());
    }
    if (indicator != null) {
      indicator.setText2(SvnBundle.message("progress.text2.changes.establishing.connection", url));
    }
    final SVNRevision pegRevision = info.getRevision();
    SVNLogClient client = myVcs.createLogClient();

    final boolean supports15 = SvnUtil.checkRepositoryVersion15(myVcs, url);
    supports15Ref.set(supports15);
    client.doLog(
        new File[] {new File(file.getIOFile().getAbsolutePath())},
        SVNRevision.HEAD,
        SVNRevision.create(1),
        SVNRevision.UNDEFINED,
        false,
        true,
        supports15,
        0,
        null,
        new MyLogEntryHandler(
            myVcs, url, pegRevision, relativeUrl, result, repoRootURL, file.getCharset()));
  }
  @Override
  public SVNURL getURL() {
    SVNURL url = super.getURL();

    if (url == null) {
      SVNInfo info = initInfo();
      url = info != null ? info.getURL() : url;
    }

    return url;
  }
    public String invoke(File p, VirtualChannel channel) throws IOException {
      final SVNClientManager manager = SubversionSCM.createSvnClientManager(authProvider);
      try {
        final SVNWCClient svnwc = manager.getWCClient();

        SVNInfo info;
        try {
          info = svnwc.doInfo(p, SVNRevision.WORKING);
          return info.getURL().toDecodedString();
        } catch (SVNException e) {
          e.printStackTrace();
          return null;
        }
      } finally {
        manager.dispose();
      }
    }
  private void fillMapping(final SvnMapping mapping, final List<SvnCopyRootSimple> list) {
    final LocalFileSystem lfs = LocalFileSystem.getInstance();

    for (SvnCopyRootSimple simple : list) {
      final VirtualFile copyRoot = lfs.findFileByIoFile(new File(simple.myCopyRoot));
      final VirtualFile vcsRoot = lfs.findFileByIoFile(new File(simple.myVcsRoot));

      if (copyRoot == null || vcsRoot == null) continue;

      final SvnVcs vcs = SvnVcs.getInstance(myProject);
      final SVNInfo svnInfo = vcs.getInfo(copyRoot);
      if ((svnInfo == null) || (svnInfo.getRepositoryRootURL() == null)) continue;

      final RootUrlInfo info =
          new RootUrlInfo(
              svnInfo.getRepositoryRootURL(),
              svnInfo.getURL(),
              SvnFormatSelector.getWorkingCopyFormat(svnInfo.getFile()),
              copyRoot,
              vcsRoot);
      mapping.add(info);
    }
  }
 private RenameContext(final SVNInfo info) {
   myRepositoryRoot = info.getRepositoryRootURL().toString();
   myCurrentPath = SVNPathUtil.getRelativePath(myRepositoryRoot, info.getURL().toString());
   myCurrentPath = myCurrentPath.startsWith("/") ? myCurrentPath : ("/" + myCurrentPath);
 }
  @Override
  public Pair<SvnChangeList, FilePath> getOneList(final VirtualFile file, VcsRevisionNumber number)
      throws VcsException {
    final RootUrlInfo rootUrlInfo =
        myVcs.getSvnFileUrlMapping().getWcRootForFilePath(new File(file.getPath()));
    if (rootUrlInfo == null) return null;
    final VirtualFile root = rootUrlInfo.getVirtualFile();
    if (root == null) return null;
    final SvnRepositoryLocation svnRootLocation =
        (SvnRepositoryLocation) getLocationFor(new FilePathImpl(root));
    if (svnRootLocation == null) return null;
    final String url = svnRootLocation.getURL();
    final long revision;
    try {
      revision = Long.parseLong(number.asString());
    } catch (NumberFormatException e) {
      throw new VcsException(e);
    }

    final SvnChangeList[] result = new SvnChangeList[1];
    final SVNLogClient logger;
    final SVNRevision revisionBefore;
    final SVNURL repositoryUrl;
    final SVNURL svnurl;
    final SVNInfo targetInfo;
    try {
      logger = myVcs.createLogClient();
      revisionBefore = SVNRevision.create(revision);

      svnurl = SVNURL.parseURIEncoded(url);
      final SVNWCClient client = myVcs.createWCClient();
      final SVNInfo info = client.doInfo(svnurl, SVNRevision.UNDEFINED, SVNRevision.HEAD);
      targetInfo = client.doInfo(new File(file.getPath()), SVNRevision.UNDEFINED);
      if (info == null) {
        throw new VcsException("Can not get repository URL");
      }
      repositoryUrl = info.getRepositoryRootURL();
    } catch (SVNException e) {
      LOG.info(e);
      throw new VcsException(e);
    }

    tryExactHit(svnRootLocation, result, logger, revisionBefore, repositoryUrl, svnurl);
    if (result[0] == null) {
      tryByRoot(result, logger, revisionBefore, repositoryUrl);
      if (result[0] == null) {
        FilePath path =
            tryStepByStep(svnRootLocation, result, logger, revisionBefore, targetInfo, svnurl);
        path = path == null ? new FilePathImpl(file) : path;
        // and pass & take rename context there
        return new Pair<SvnChangeList, FilePath>(result[0], path);
      }
    }
    if (result[0].getChanges().size() == 1) {
      final Collection<Change> changes = result[0].getChanges();
      final Change change = changes.iterator().next();
      final ContentRevision afterRevision = change.getAfterRevision();
      if (afterRevision != null) {
        return new Pair<SvnChangeList, FilePath>(result[0], afterRevision.getFile());
      } else {
        return new Pair<SvnChangeList, FilePath>(result[0], new FilePathImpl(file));
      }
    }
    String relativePath =
        SVNPathUtil.getRelativePath(
            targetInfo.getRepositoryRootURL().toString(), targetInfo.getURL().toString());
    relativePath = relativePath.startsWith("/") ? relativePath : "/" + relativePath;
    final Change targetChange = result[0].getByPath(relativePath);
    if (targetChange == null) {
      FilePath path =
          tryStepByStep(svnRootLocation, result, logger, revisionBefore, targetInfo, svnurl);
      path = path == null ? new FilePathImpl(file) : path;
      // and pass & take rename context there
      return new Pair<SvnChangeList, FilePath>(result[0], path);
    }
    return new Pair<SvnChangeList, FilePath>(result[0], new FilePathImpl(file));
  }