src/VCBackend.cpp

   1 /**
   2  * \file VCBackend.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "VCBackend.h"
  14 #include "Buffer.h"
  15
  16 #include "frontends/alert.h"
  17
  18 #include "support/debug.h"
  19 #include "support/filetools.h"
  20 #include "support/gettext.h"
  21 #include "support/lstrings.h"
  22 #include "support/Path.h"
  23 #include "support/Systemcall.h"
  24
  25 #include <boost/regex.hpp>
  26
  27 #include <fstream>
  28
  29 using namespace std;
  30 using namespace lyx::support;
  31
  32 using boost::regex;
  33 using boost::regex_match;
  34 using boost::smatch;
  35
  36 namespace lyx {
  37
  38
  39 int VCS::doVCCommandCall(string const & cmd, FileName const & path)
  40 {
  41         LYXERR(Debug::LYXVC, "doVCCommandCall: " << cmd);
  42         Systemcall one;
  43         support::PathChanger p(path);
  44         return one.startscript(Systemcall::Wait, cmd);
  45 }
  46
  47
  48 int VCS::doVCCommand(string const & cmd, FileName const & path)
  49 {
  50         if (owner_)
  51                 owner_->setBusy(true);
  52
  53         int const ret = doVCCommandCall(cmd, path);
  54
  55         if (owner_)
  56                 owner_->setBusy(false);
  57         if (ret)
  58                 frontend::Alert::error(_("Revision control error."),
  59                         bformat(_("Some problem occured while running the command:\n"
  60                                   "'%1$s'."),
  61                         from_utf8(cmd)));
  62         return ret;
  63 }
  64
  65
  66 /////////////////////////////////////////////////////////////////////
  67 //
  68 // RCS
  69 //
  70 /////////////////////////////////////////////////////////////////////
  71
  72 RCS::RCS(FileName const & m)
  73 {
  74         master_ = m;
  75         scanMaster();
  76 }
  77
  78
  79 FileName const RCS::findFile(FileName const & file)
  80 {
  81         // Check if *,v exists.
  82         FileName tmp(file.absFilename() + ",v");
  83         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under rcs: " << tmp);
  84         if (tmp.isReadableFile()) {
  85                 LYXERR(Debug::LYXVC, "Yes, " << file << " is under rcs.");
  86                 return tmp;
  87         }
  88
  89         // Check if RCS/*,v exists.
  90         tmp = FileName(addName(addPath(onlyPath(file.absFilename()), "RCS"), file.absFilename()) + ",v");
  91         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under rcs: " << tmp);
  92         if (tmp.isReadableFile()) {
  93                 LYXERR(Debug::LYXVC, "Yes, " << file << " is under rcs.");
  94                 return tmp;
  95         }
  96
  97         return FileName();
  98 }
  99
 100
 101 void RCS::retrieve(FileName const & file)
 102 {
 103         LYXERR(Debug::LYXVC, "LyXVC::RCS: retrieve.\n\t" << file);
 104         doVCCommandCall("co -q -r " + quoteName(file.toFilesystemEncoding()),
 105                          FileName());
 106 }
 107
 108
 109 void RCS::scanMaster()
 110 {
 111         if (master_.empty())
 112                 return;
 113
 114         LYXERR(Debug::LYXVC, "LyXVC::RCS: scanMaster: " << master_);
 115
 116         ifstream ifs(master_.toFilesystemEncoding().c_str());
 117
 118         string token;
 119         bool read_enough = false;
 120
 121         while (!read_enough && ifs >> token) {
 122                 LYXERR(Debug::LYXVC, "LyXVC::scanMaster: current lex text: `"
 123                         << token << '\'');
 124
 125                 if (token.empty())
 126                         continue;
 127                 else if (token == "head") {
 128                         // get version here
 129                         string tmv;
 130                         ifs >> tmv;
 131                         tmv = rtrim(tmv, ";");
 132                         version_ = tmv;
 133                         LYXERR(Debug::LYXVC, "LyXVC: version found to be " << tmv);
 134                 } else if (contains(token, "access")
 135                            || contains(token, "symbols")
 136                            || contains(token, "strict")) {
 137                         // nothing
 138                 } else if (contains(token, "locks")) {
 139                         // get locker here
 140                         if (contains(token, ';')) {
 141                                 locker_ = "Unlocked";
 142                                 vcstatus = UNLOCKED;
 143                                 continue;
 144                         }
 145                         string tmpt;
 146                         string s1;
 147                         string s2;
 148                         do {
 149                                 ifs >> tmpt;
 150                                 s1 = rtrim(tmpt, ";");
 151                                 // tmp is now in the format <user>:<version>
 152                                 s1 = split(s1, s2, ':');
 153                                 // s2 is user, and s1 is version
 154                                 if (s1 == version_) {
 155                                         locker_ = s2;
 156                                         vcstatus = LOCKED;
 157                                         break;
 158                                 }
 159                         } while (!contains(tmpt, ';'));
 160
 161                 } else if (token == "comment") {
 162                         // we don't need to read any further than this.
 163                         read_enough = true;
 164                 } else {
 165                         // unexpected
 166                         LYXERR(Debug::LYXVC, "LyXVC::scanMaster(): unexpected token");
 167                 }
 168         }
 169 }
 170
 171
 172 void RCS::registrer(string const & msg)
 173 {
 174         string cmd = "ci -q -u -i -t-\"";
 175         cmd += msg;
 176         cmd += "\" ";
 177         cmd += quoteName(onlyFilename(owner_->absFileName()));
 178         doVCCommand(cmd, FileName(owner_->filePath()));
 179 }
 180
 181
 182 string RCS::checkIn(string const & msg)
 183 {
 184         int ret = doVCCommand("ci -q -u -m\"" + msg + "\" "
 185                     + quoteName(onlyFilename(owner_->absFileName())),
 186                     FileName(owner_->filePath()));
 187         return ret ? string() : "RCS: Proceeded";
 188 }
 189
 190
 191 bool RCS::checkInEnabled()
 192 {
 193         return owner_ && !owner_->isReadonly();
 194 }
 195
 196
 197 string RCS::checkOut()
 198 {
 199         owner_->markClean();
 200         int ret = doVCCommand("co -q -l " + quoteName(onlyFilename(owner_->absFileName())),
 201                     FileName(owner_->filePath()));
 202         return ret ? string() : "RCS: Proceeded";
 203 }
 204
 205
 206 bool RCS::checkOutEnabled()
 207 {
 208         return owner_ && owner_->isReadonly();
 209 }
 210
 211
 212 string RCS::repoUpdate()
 213 {
 214         lyxerr << "Sorry, not implemented." << endl;
 215         return string();
 216 }
 217
 218
 219 bool RCS::repoUpdateEnabled()
 220 {
 221         return false;
 222 }
 223
 224
 225 string RCS::lockingToggle()
 226 {
 227         lyxerr << "Sorry, not implemented." << endl;
 228         return string();
 229 }
 230
 231
 232 bool RCS::lockingToggleEnabled()
 233 {
 234         return false;
 235 }
 236
 237
 238 void RCS::revert()
 239 {
 240         doVCCommand("co -f -u" + version() + " "
 241                     + quoteName(onlyFilename(owner_->absFileName())),
 242                     FileName(owner_->filePath()));
 243         // We ignore changes and just reload!
 244         owner_->markClean();
 245 }
 246
 247
 248 void RCS::undoLast()
 249 {
 250         LYXERR(Debug::LYXVC, "LyXVC: undoLast");
 251         doVCCommand("rcs -o" + version() + " "
 252                     + quoteName(onlyFilename(owner_->absFileName())),
 253                     FileName(owner_->filePath()));
 254 }
 255
 256
 257 bool RCS::undoLastEnabled()
 258 {
 259         return true;
 260 }
 261
 262
 263 void RCS::getLog(FileName const & tmpf)
 264 {
 265         doVCCommand("rlog " + quoteName(onlyFilename(owner_->absFileName()))
 266                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 267                     FileName(owner_->filePath()));
 268 }
 269
 270
 271 bool RCS::toggleReadOnlyEnabled()
 272 {
 273         return true;
 274 }
 275
 276
 277 /////////////////////////////////////////////////////////////////////
 278 //
 279 // CVS
 280 //
 281 /////////////////////////////////////////////////////////////////////
 282
 283 CVS::CVS(FileName const & m, FileName const & f)
 284 {
 285         master_ = m;
 286         file_ = f;
 287         scanMaster();
 288 }
 289
 290
 291 FileName const CVS::findFile(FileName const & file)
 292 {
 293         // First we look for the CVS/Entries in the same dir
 294         // where we have file.
 295         FileName const entries(onlyPath(file.absFilename()) + "/CVS/Entries");
 296         string const tmpf = '/' + onlyFilename(file.absFilename()) + '/';
 297         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under cvs in `" << entries
 298                              << "' for `" << tmpf << '\'');
 299         if (entries.isReadableFile()) {
 300                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 301                 // and see if we can find this file. We do a fast and
 302                 // dirty parse here.
 303                 ifstream ifs(entries.toFilesystemEncoding().c_str());
 304                 string line;
 305                 while (getline(ifs, line)) {
 306                         LYXERR(Debug::LYXVC, "\tEntries: " << line);
 307                         if (contains(line, tmpf))
 308                                 return entries;
 309                 }
 310         }
 311         return FileName();
 312 }
 313
 314
 315 void CVS::scanMaster()
 316 {
 317         LYXERR(Debug::LYXVC, "LyXVC::CVS: scanMaster. \n     Checking: " << master_);
 318         // Ok now we do the real scan...
 319         ifstream ifs(master_.toFilesystemEncoding().c_str());
 320         string tmpf = '/' + onlyFilename(file_.absFilename()) + '/';
 321         LYXERR(Debug::LYXVC, "\tlooking for `" << tmpf << '\'');
 322         string line;
 323         static regex const reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 324         while (getline(ifs, line)) {
 325                 LYXERR(Debug::LYXVC, "\t  line: " << line);
 326                 if (contains(line, tmpf)) {
 327                         // Ok extract the fields.
 328                         smatch sm;
 329
 330                         regex_match(line, sm, reg);
 331
 332                         //sm[0]; // whole matched string
 333                         //sm[1]; // filename
 334                         version_ = sm.str(2);
 335                         string const file_date = sm.str(3);
 336
 337                         //sm[4]; // options
 338                         //sm[5]; // tag or tagdate
 339                         // FIXME: must double check file is stattable/existing
 340                         time_t mod = file_.lastModified();
 341                         string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 342                         LYXERR(Debug::LYXVC, "Date in Entries: `" << file_date
 343                                 << "'\nModification date of file: `" << mod_date << '\'');
 344                         //FIXME this whole locking bussiness is not working under cvs and the machinery
 345                         // conforms to the ci usage, not cvs.
 346                         if (file_date == mod_date) {
 347                                 locker_ = "Unlocked";
 348                                 vcstatus = UNLOCKED;
 349                         } else {
 350                                 // Here we should also to some more checking
 351                                 // to see if there are conflicts or not.
 352                                 locker_ = "Locked";
 353                                 vcstatus = LOCKED;
 354                         }
 355                         break;
 356                 }
 357         }
 358 }
 359
 360
 361 void CVS::registrer(string const & msg)
 362 {
 363         doVCCommand("cvs -q add -m \"" + msg + "\" "
 364                     + quoteName(onlyFilename(owner_->absFileName())),
 365                     FileName(owner_->filePath()));
 366 }
 367
 368
 369 string CVS::checkIn(string const & msg)
 370 {
 371         int ret = doVCCommand("cvs -q commit -m \"" + msg + "\" "
 372                     + quoteName(onlyFilename(owner_->absFileName())),
 373                     FileName(owner_->filePath()));
 374         return ret ? string() : "CVS: Proceeded";
 375 }
 376
 377
 378 bool CVS::checkInEnabled()
 379 {
 380         return true;
 381 }
 382
 383
 384 string CVS::checkOut()
 385 {
 386         // cvs update or perhaps for cvs this should be a noop
 387         // we need to detect conflict (eg "C" in output)
 388         // before we can do this.
 389         lyxerr << "Sorry, not implemented." << endl;
 390         return string();
 391 }
 392
 393
 394 bool CVS::checkOutEnabled()
 395 {
 396         return false;
 397 }
 398
 399
 400 string CVS::repoUpdate()
 401 {
 402         lyxerr << "Sorry, not implemented." << endl;
 403         return string();
 404 }
 405
 406
 407 bool CVS::repoUpdateEnabled()
 408 {
 409         return false;
 410 }
 411
 412
 413 string CVS::lockingToggle()
 414 {
 415         lyxerr << "Sorry, not implemented." << endl;
 416         return string();
 417 }
 418
 419
 420 bool CVS::lockingToggleEnabled()
 421 {
 422         return false;
 423 }
 424
 425
 426 void CVS::revert()
 427 {
 428         // Reverts to the version in CVS repository and
 429         // gets the updated version from the repository.
 430         string const fil = quoteName(onlyFilename(owner_->absFileName()));
 431         // This is sensitive operation, so at lest some check about
 432         // existence of cvs program and its file
 433         if (doVCCommand("cvs log "+ fil, FileName(owner_->filePath())))
 434                 return;
 435         FileName f(owner_->absFileName());
 436         f.removeFile();
 437         doVCCommand("cvs update " + fil,
 438                     FileName(owner_->filePath()));
 439         owner_->markClean();
 440 }
 441
 442
 443 void CVS::undoLast()
 444 {
 445         // merge the current with the previous version
 446         // in a reverse patch kind of way, so that the
 447         // result is to revert the last changes.
 448         lyxerr << "Sorry, not implemented." << endl;
 449 }
 450
 451
 452 bool CVS::undoLastEnabled()
 453 {
 454         return false;
 455 }
 456
 457
 458 void CVS::getLog(FileName const & tmpf)
 459 {
 460         doVCCommand("cvs log " + quoteName(onlyFilename(owner_->absFileName()))
 461                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 462                     FileName(owner_->filePath()));
 463 }
 464
 465
 466 bool CVS::toggleReadOnlyEnabled()
 467 {
 468         return false;
 469 }
 470
 471 /////////////////////////////////////////////////////////////////////
 472 //
 473 // SVN
 474 //
 475 /////////////////////////////////////////////////////////////////////
 476
 477 SVN::SVN(FileName const & m, FileName const & f)
 478 {
 479         owner_ = 0;
 480         master_ = m;
 481         file_ = f;
 482         locked_mode_ = 0;
 483         scanMaster();
 484 }
 485
 486
 487 FileName const SVN::findFile(FileName const & file)
 488 {
 489         // First we look for the .svn/entries in the same dir
 490         // where we have file.
 491         FileName const entries(onlyPath(file.absFilename()) + "/.svn/entries");
 492         string const tmpf = onlyFilename(file.absFilename());
 493         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under svn in `" << entries
 494                              << "' for `" << tmpf << '\'');
 495         if (entries.isReadableFile()) {
 496                 // Ok we are at least in a SVN dir. Parse the .svn/entries
 497                 // and see if we can find this file. We do a fast and
 498                 // dirty parse here.
 499                 ifstream ifs(entries.toFilesystemEncoding().c_str());
 500                 string line, oldline;
 501                 while (getline(ifs, line)) {
 502                         if (line == "dir" || line == "file")
 503                                 LYXERR(Debug::LYXVC, "\tEntries: " << oldline);
 504                         if (oldline == tmpf && line == "file")
 505                                 return entries;
 506                         oldline = line;
 507                 }
 508         }
 509         return FileName();
 510 }
 511
 512
 513 void SVN::scanMaster()
 514 {
 515         locker_.clear();
 516         vcstatus = NOLOCKING;
 517         if (checkLockMode()) {
 518                 if (isLocked()) {
 519                         locker_ = "Locked";
 520                         vcstatus = LOCKED;
 521                 } else {
 522                         locker_ = "Unlocked";
 523                         vcstatus = LOCKED;
 524                 }
 525         }
 526 }
 527
 528
 529 bool SVN::checkLockMode()
 530 {
 531         FileName tmpf = FileName::tempName("lyxvcout");
 532         if (tmpf.empty()){
 533                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 534                 return N_("Error: Could not generate logfile.");
 535         }
 536
 537         LYXERR(Debug::LYXVC, "Detecting locking mode...");
 538         if (doVCCommandCall("svn proplist " + quoteName(file_.onlyFileName())
 539                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 540                     file_.onlyPath()))
 541                 return false;
 542
 543         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 544         string line;
 545         bool ret = false;
 546
 547         while (ifs) {
 548                 getline(ifs, line);
 549                 LYXERR(Debug::LYXVC, line);
 550                 if (contains(line, "svn:needs-lock"))
 551                         ret = true;
 552         }
 553         LYXERR(Debug::LYXVC, "Locking enabled: " << ret);
 554         ifs.close();
 555         locked_mode_ = ret;
 556         return ret;
 557
 558 }
 559
 560
 561 bool SVN::isLocked() const
 562 {
 563         //refresh file info
 564         FileName file(file_.absFilename());
 565         return !file.isReadOnly();
 566 }
 567
 568
 569 void SVN::registrer(string const & /*msg*/)
 570 {
 571         doVCCommand("svn add -q " + quoteName(onlyFilename(owner_->absFileName())),
 572                     FileName(owner_->filePath()));
 573 }
 574
 575
 576 string SVN::checkIn(string const & msg)
 577 {
 578         FileName tmpf = FileName::tempName("lyxvcout");
 579         if (tmpf.empty()){
 580                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 581                 return N_("Error: Could not generate logfile.");
 582         }
 583
 584         doVCCommand("svn commit -m \"" + msg + "\" "
 585                     + quoteName(onlyFilename(owner_->absFileName()))
 586                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 587                     FileName(owner_->filePath()));
 588
 589         string log;
 590         string res = scanLogFile(tmpf, log);
 591         if (!res.empty())
 592                 frontend::Alert::error(_("Revision control error."),
 593                                 _("Error when committing to repository.\n"
 594                                 "You have to manually resolve the problem.\n"
 595                                 "After pressing OK, LyX will reopen the document."));
 596         else
 597                 fileLock(false, tmpf, log);
 598
 599         tmpf.erase();
 600         return "SVN: " + log;
 601 }
 602
 603
 604 bool SVN::checkInEnabled()
 605 {
 606         if (locked_mode_)
 607                 return isLocked();
 608         else
 609                 return true;
 610 }
 611
 612
 613 // FIXME Correctly return code should be checked instead of this.
 614 // This would need another solution than just plain startscript.
 615 // Hint from Andre': QProcess::readAllStandardError()...
 616 string SVN::scanLogFile(FileName const & f, string & status)
 617 {
 618         ifstream ifs(f.toFilesystemEncoding().c_str());
 619         string line;
 620
 621         while (ifs) {
 622                 getline(ifs, line);
 623                 lyxerr << line << "\n";
 624                 if (!line.empty()) status += line + "; ";
 625                 if (prefixIs(line, "C ") || contains(line, "Commit failed")) {
 626                         ifs.close();
 627                         return line;
 628                 }
 629                 if (contains(line, "svn:needs-lock")) {
 630                         ifs.close();
 631                         return line;
 632                 }
 633         }
 634         ifs.close();
 635         return string();
 636 }
 637
 638
 639 void SVN::fileLock(bool lock, FileName const & tmpf, string &status)
 640 {
 641         if (!locked_mode_ || (isLocked() == lock))
 642                 return;
 643
 644         string arg = lock ? "lock " : "unlock ";
 645         doVCCommand("svn "+ arg + quoteName(onlyFilename(owner_->absFileName()))
 646                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 647                     FileName(owner_->filePath()));
 648
 649         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 650         string line;
 651         while (ifs) {
 652                 getline(ifs, line);
 653                 if (!line.empty()) status += line + "; ";
 654         }
 655         ifs.close();
 656
 657         if (!isLocked() && lock)
 658                 frontend::Alert::error(_("Revision control error."),
 659                         _("Error when acquiring write lock.\n"
 660                         "Most probably another user is editing\n"
 661                         "the current document now!\n"
 662                         "Also check the access to the repository."));
 663         if (isLocked() && !lock)
 664                 frontend::Alert::error(_("Revision control error."),
 665                         _("Error when releasing write lock.\n"
 666                         "Check the access to the repository."));
 667 }
 668
 669
 670 string SVN::checkOut()
 671 {
 672         FileName tmpf = FileName::tempName("lyxvcout");
 673         if (tmpf.empty()) {
 674                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 675                 return N_("Error: Could not generate logfile.");
 676         }
 677
 678         doVCCommand("svn update " + quoteName(onlyFilename(owner_->absFileName()))
 679                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 680                     FileName(owner_->filePath()));
 681
 682         string log;
 683         string res = scanLogFile(tmpf, log);
 684         if (!res.empty())
 685                 frontend::Alert::error(_("Revision control error."),
 686                         bformat(_("Error when updating from repository.\n"
 687                                 "You have to manually resolve the conflicts NOW!\n'%1$s'.\n\n"
 688                                 "After pressing OK, LyX will try to reopen resolved document."),
 689                         from_local8bit(res)));
 690
 691         fileLock(true, tmpf, log);
 692
 693         tmpf.erase();
 694         return "SVN: " + log;
 695 }
 696
 697
 698 bool SVN::checkOutEnabled()
 699 {
 700         if (locked_mode_)
 701                 return !isLocked();
 702         else
 703                 return true;
 704 }
 705
 706
 707 string SVN::repoUpdate()
 708 {
 709         FileName tmpf = FileName::tempName("lyxvcout");
 710         if (tmpf.empty()) {
 711                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 712                 return N_("Error: Could not generate logfile.");
 713         }
 714
 715         doVCCommand("svn diff " + quoteName(owner_->filePath())
 716         + " > " + quoteName(tmpf.toFilesystemEncoding()),
 717         FileName(owner_->filePath()));
 718         docstring res = tmpf.fileContents("UTF-8");
 719         if (!res.empty()) {
 720                 LYXERR(Debug::LYXVC, "Diff detected:\n" << res);
 721                 docstring const file = from_utf8(owner_->filePath());
 722                 docstring text = bformat(_("There were detected changes "
 723                                 "in the working directory:\n%1$s\n\n"
 724                                 "In case of file conflict version of the local directory files "
 725                                 "will be preferred."
 726                                 "\n\nContinue?"), file);
 727                 int const ret = frontend::Alert::prompt(_("Changes detected"),
 728                                 text, 0, 1, _("&Yes"), _("&No"));
 729                 if (ret) {
 730                         tmpf.erase();
 731                         return string();
 732                 }
 733         }
 734
 735         // Reverting looks too harsh, see bug #6255.
 736         // doVCCommand("svn revert -R " + quoteName(owner_->filePath())
 737         // + " > " + quoteName(tmpf.toFilesystemEncoding()),
 738         // FileName(owner_->filePath()));
 739         // res = "Revert log:\n" + tmpf.fileContents("UTF-8");
 740         doVCCommand("svn update --accept mine-full " + quoteName(owner_->filePath())
 741         + " > " + quoteName(tmpf.toFilesystemEncoding()),
 742         FileName(owner_->filePath()));
 743         res += "Update log:\n" + tmpf.fileContents("UTF-8");
 744
 745         LYXERR(Debug::LYXVC, res);
 746         tmpf.erase();
 747         return to_utf8(res);
 748 }
 749
 750
 751 bool SVN::repoUpdateEnabled()
 752 {
 753         return true;
 754 }
 755
 756
 757 string SVN::lockingToggle()
 758 {
 759         FileName tmpf = FileName::tempName("lyxvcout");
 760         if (tmpf.empty()) {
 761                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 762                 return N_("Error: Could not generate logfile.");
 763         }
 764
 765         int ret = doVCCommand("svn proplist " + quoteName(onlyFilename(owner_->absFileName()))
 766                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 767                     FileName(owner_->filePath()));
 768         if (ret)
 769                 return string();
 770
 771         string log;
 772         string res = scanLogFile(tmpf, log);
 773         bool locking = contains(res, "svn:needs-lock");
 774         if (!locking)
 775                 ret = doVCCommand("svn propset svn:needs-lock ON "
 776                     + quoteName(onlyFilename(owner_->absFileName()))
 777                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 778                     FileName(owner_->filePath()));
 779         else
 780                 ret = doVCCommand("svn propdel svn:needs-lock "
 781                     + quoteName(onlyFilename(owner_->absFileName()))
 782                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 783                     FileName(owner_->filePath()));
 784         if (ret)
 785                 return string();
 786
 787         tmpf.erase();
 788         frontend::Alert::warning(_("VCN File Locking"),
 789                 (locking ? _("Locking property unset.") : _("Locking property set.")) + "\n"
 790                 + _("Do not forget to commit the locking property into the repository."),
 791                 true);
 792
 793         return string("SVN: ") +  N_("Locking property set.");
 794 }
 795
 796
 797 bool SVN::lockingToggleEnabled()
 798 {
 799         return true;
 800 }
 801
 802
 803 void SVN::revert()
 804 {
 805         // Reverts to the version in CVS repository and
 806         // gets the updated version from the repository.
 807         string const fil = quoteName(onlyFilename(owner_->absFileName()));
 808
 809         doVCCommand("svn revert -q " + fil,
 810                     FileName(owner_->filePath()));
 811         owner_->markClean();
 812 }
 813
 814
 815 void SVN::undoLast()
 816 {
 817         // merge the current with the previous version
 818         // in a reverse patch kind of way, so that the
 819         // result is to revert the last changes.
 820         lyxerr << "Sorry, not implemented." << endl;
 821 }
 822
 823
 824 bool SVN::undoLastEnabled()
 825 {
 826         return false;
 827 }
 828
 829
 830 void SVN::getLog(FileName const & tmpf)
 831 {
 832         doVCCommand("svn log " + quoteName(onlyFilename(owner_->absFileName()))
 833                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 834                     FileName(owner_->filePath()));
 835 }
 836
 837
 838 bool SVN::toggleReadOnlyEnabled()
 839 {
 840         return false;
 841 }
 842
 843
 844 } // namespace lyx