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  * \author Pavel Sanda
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "VCBackend.h"
  15 #include "Buffer.h"
  16 #include "LyX.h"
  17 #include "FuncRequest.h"
  18
  19 #include "frontends/alert.h"
  20 #include "frontends/Application.h"
  21
  22 #include "support/convert.h"
  23 #include "support/debug.h"
  24 #include "support/filetools.h"
  25 #include "support/gettext.h"
  26 #include "support/lstrings.h"
  27 #include "support/Path.h"
  28 #include "support/Systemcall.h"
  29 #include "support/regex.h"
  30
  31 #include <fstream>
  32
  33 using namespace std;
  34 using namespace lyx::support;
  35
  36
  37
  38 namespace lyx {
  39
  40
  41 int VCS::doVCCommandCall(string const & cmd, FileName const & path)
  42 {
  43         LYXERR(Debug::LYXVC, "doVCCommandCall: " << cmd);
  44         Systemcall one;
  45         support::PathChanger p(path);
  46         return one.startscript(Systemcall::Wait, cmd, false);
  47 }
  48
  49
  50 int VCS::doVCCommand(string const & cmd, FileName const & path, bool reportError)
  51 {
  52         if (owner_)
  53                 owner_->setBusy(true);
  54
  55         int const ret = doVCCommandCall(cmd, path);
  56
  57         if (owner_)
  58                 owner_->setBusy(false);
  59         if (ret && reportError)
  60                 frontend::Alert::error(_("Revision control error."),
  61                         bformat(_("Some problem occured while running the command:\n"
  62                                   "'%1$s'."),
  63                         from_utf8(cmd)));
  64         return ret;
  65 }
  66
  67
  68 /////////////////////////////////////////////////////////////////////
  69 //
  70 // RCS
  71 //
  72 /////////////////////////////////////////////////////////////////////
  73
  74 RCS::RCS(FileName const & m)
  75 {
  76         master_ = m;
  77         scanMaster();
  78 }
  79
  80
  81 FileName const RCS::findFile(FileName const & file)
  82 {
  83         // Check if *,v exists.
  84         FileName tmp(file.absFileName() + ",v");
  85         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under rcs: " << tmp);
  86         if (tmp.isReadableFile()) {
  87                 LYXERR(Debug::LYXVC, "Yes, " << file << " is under rcs.");
  88                 return tmp;
  89         }
  90
  91         // Check if RCS/*,v exists.
  92         tmp = FileName(addName(addPath(onlyPath(file.absFileName()), "RCS"), file.absFileName()) + ",v");
  93         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under rcs: " << tmp);
  94         if (tmp.isReadableFile()) {
  95                 LYXERR(Debug::LYXVC, "Yes, " << file << " is under rcs.");
  96                 return tmp;
  97         }
  98
  99         return FileName();
 100 }
 101
 102
 103 void RCS::retrieve(FileName const & file)
 104 {
 105         LYXERR(Debug::LYXVC, "LyXVC::RCS: retrieve.\n\t" << file);
 106         doVCCommandCall("co -q -r " + quoteName(file.toFilesystemEncoding()),
 107                          FileName());
 108 }
 109
 110
 111 void RCS::scanMaster()
 112 {
 113         if (master_.empty())
 114                 return;
 115
 116         LYXERR(Debug::LYXVC, "LyXVC::RCS: scanMaster: " << master_);
 117
 118         ifstream ifs(master_.toFilesystemEncoding().c_str());
 119
 120         string token;
 121         bool read_enough = false;
 122
 123         while (!read_enough && ifs >> token) {
 124                 LYXERR(Debug::LYXVC, "LyXVC::scanMaster: current lex text: `"
 125                         << token << '\'');
 126
 127                 if (token.empty())
 128                         continue;
 129                 else if (token == "head") {
 130                         // get version here
 131                         string tmv;
 132                         ifs >> tmv;
 133                         tmv = rtrim(tmv, ";");
 134                         version_ = tmv;
 135                         LYXERR(Debug::LYXVC, "LyXVC: version found to be " << tmv);
 136                 } else if (contains(token, "access")
 137                            || contains(token, "symbols")
 138                            || contains(token, "strict")) {
 139                         // nothing
 140                 } else if (contains(token, "locks")) {
 141                         // get locker here
 142                         if (contains(token, ';')) {
 143                                 locker_ = "Unlocked";
 144                                 vcstatus = UNLOCKED;
 145                                 continue;
 146                         }
 147                         string tmpt;
 148                         string s1;
 149                         string s2;
 150                         do {
 151                                 ifs >> tmpt;
 152                                 s1 = rtrim(tmpt, ";");
 153                                 // tmp is now in the format <user>:<version>
 154                                 s1 = split(s1, s2, ':');
 155                                 // s2 is user, and s1 is version
 156                                 if (s1 == version_) {
 157                                         locker_ = s2;
 158                                         vcstatus = LOCKED;
 159                                         break;
 160                                 }
 161                         } while (!contains(tmpt, ';'));
 162
 163                 } else if (token == "comment") {
 164                         // we don't need to read any further than this.
 165                         read_enough = true;
 166                 } else {
 167                         // unexpected
 168                         LYXERR(Debug::LYXVC, "LyXVC::scanMaster(): unexpected token");
 169                 }
 170         }
 171 }
 172
 173
 174 void RCS::registrer(string const & msg)
 175 {
 176         string cmd = "ci -q -u -i -t-\"";
 177         cmd += msg;
 178         cmd += "\" ";
 179         cmd += quoteName(onlyFileName(owner_->absFileName()));
 180         doVCCommand(cmd, FileName(owner_->filePath()));
 181 }
 182
 183
 184 string RCS::checkIn(string const & msg)
 185 {
 186         int ret = doVCCommand("ci -q -u -m\"" + msg + "\" "
 187                     + quoteName(onlyFileName(owner_->absFileName())),
 188                     FileName(owner_->filePath()));
 189         return ret ? string() : "RCS: Proceeded";
 190 }
 191
 192
 193 bool RCS::checkInEnabled()
 194 {
 195         return owner_ && !owner_->isReadonly();
 196 }
 197
 198
 199 bool RCS::isCheckInWithConfirmation()
 200 {
 201         // FIXME one day common getDiff for all backends
 202         // docstring diff;
 203         // if (getDiff(file, diff) && diff.empty())
 204         //      return false;
 205
 206         FileName tmpf = FileName::tempName("lyxvcout");
 207         if (tmpf.empty()) {
 208                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 209                 return true;
 210         }
 211
 212         doVCCommandCall("rcsdiff " + quoteName(owner_->absFileName())
 213                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 214                 FileName(owner_->filePath()));
 215
 216         docstring diff = tmpf.fileContents("UTF-8");
 217         tmpf.erase();
 218
 219         if (diff.empty())
 220                 return false;
 221
 222         return true;
 223 }
 224
 225
 226 string RCS::checkOut()
 227 {
 228         owner_->markClean();
 229         int ret = doVCCommand("co -q -l " + quoteName(onlyFileName(owner_->absFileName())),
 230                     FileName(owner_->filePath()));
 231         return ret ? string() : "RCS: Proceeded";
 232 }
 233
 234
 235 bool RCS::checkOutEnabled()
 236 {
 237         return owner_ && owner_->isReadonly();
 238 }
 239
 240
 241 string RCS::repoUpdate()
 242 {
 243         lyxerr << "Sorry, not implemented." << endl;
 244         return string();
 245 }
 246
 247
 248 bool RCS::repoUpdateEnabled()
 249 {
 250         return false;
 251 }
 252
 253
 254 string RCS::lockingToggle()
 255 {
 256         //FIXME this might be actually possible, study rcs -U, rcs -L.
 257         //State should be easy to get inside scanMaster.
 258         //It would fix #4370 and make rcs/svn usage even more closer.
 259         lyxerr << "Sorry, not implemented." << endl;
 260         return string();
 261 }
 262
 263
 264 bool RCS::lockingToggleEnabled()
 265 {
 266         return false;
 267 }
 268
 269
 270 void RCS::revert()
 271 {
 272         doVCCommand("co -f -u" + version_ + " "
 273                     + quoteName(onlyFileName(owner_->absFileName())),
 274                     FileName(owner_->filePath()));
 275         // We ignore changes and just reload!
 276         owner_->markClean();
 277 }
 278
 279
 280 bool RCS::isRevertWithConfirmation()
 281 {
 282         //FIXME owner && diff ?
 283         return true;
 284 }
 285
 286
 287 void RCS::undoLast()
 288 {
 289         LYXERR(Debug::LYXVC, "LyXVC: undoLast");
 290         doVCCommand("rcs -o" + version_ + " "
 291                     + quoteName(onlyFileName(owner_->absFileName())),
 292                     FileName(owner_->filePath()));
 293 }
 294
 295
 296 bool RCS::undoLastEnabled()
 297 {
 298         return true;
 299 }
 300
 301
 302 void RCS::getLog(FileName const & tmpf)
 303 {
 304         doVCCommand("rlog " + quoteName(onlyFileName(owner_->absFileName()))
 305                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 306                     FileName(owner_->filePath()));
 307 }
 308
 309
 310 bool RCS::toggleReadOnlyEnabled()
 311 {
 312         // This got broken somewhere along lfuns dispatch reorganization.
 313         // reloadBuffer would be needed after this, but thats problematic
 314         // since we are inside Buffer::dispatch.
 315         // return true;
 316         return false;
 317 }
 318
 319 string RCS::revisionInfo(LyXVC::RevisionInfo const info)
 320 {
 321         if (info == LyXVC::File)
 322                 return version_;
 323         return string();
 324 }
 325
 326
 327 bool RCS::prepareFileRevision(string const &revis, string & f)
 328 {
 329         string rev = revis;
 330
 331         if (isStrInt(rev)) {
 332                 int back = convert<int>(rev);
 333                 // if positive use as the last number in the whole revision string
 334                 if (back > 0) {
 335                         string base;
 336                         rsplit(version_, base , '.' );
 337                         rev = base + "." + rev;
 338                 }
 339                 if (back == 0)
 340                         rev = version_;
 341                 // we care about the last number from revision string
 342                 // in case of backward indexing
 343                 if (back < 0) {
 344                         string cur, base;
 345                         cur = rsplit(version_, base , '.' );
 346                         if (!isStrInt(cur))
 347                                 return false;
 348                         int want = convert<int>(cur) + back;
 349                         if (want <= 0)
 350                                 return false;
 351
 352                         rev = base + "." + convert<string>(want);
 353                 }
 354         }
 355
 356         FileName tmpf = FileName::tempName("lyxvcrev_" + rev + "_");
 357         if (tmpf.empty()) {
 358                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 359                 return N_("Error: Could not generate logfile.");
 360         }
 361
 362         doVCCommand("co -p" + rev + " "
 363                       + quoteName(onlyFileName(owner_->absFileName()))
 364                       + " > " + quoteName(tmpf.toFilesystemEncoding()),
 365                 FileName(owner_->filePath()));
 366         if (tmpf.isFileEmpty())
 367                 return false;
 368
 369         f = tmpf.absFileName();
 370         return true;
 371 }
 372
 373
 374 bool RCS::prepareFileRevisionEnabled()
 375 {
 376         return true;
 377 }
 378
 379
 380 /////////////////////////////////////////////////////////////////////
 381 //
 382 // CVS
 383 //
 384 /////////////////////////////////////////////////////////////////////
 385
 386 CVS::CVS(FileName const & m, FileName const & f)
 387 {
 388         master_ = m;
 389         file_ = f;
 390         have_rev_info_ = false;
 391         scanMaster();
 392 }
 393
 394
 395 FileName const CVS::findFile(FileName const & file)
 396 {
 397         // First we look for the CVS/Entries in the same dir
 398         // where we have file.
 399         FileName const entries(onlyPath(file.absFileName()) + "/CVS/Entries");
 400         string const tmpf = '/' + onlyFileName(file.absFileName()) + '/';
 401         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under cvs in `" << entries
 402                              << "' for `" << tmpf << '\'');
 403         if (entries.isReadableFile()) {
 404                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 405                 // and see if we can find this file. We do a fast and
 406                 // dirty parse here.
 407                 ifstream ifs(entries.toFilesystemEncoding().c_str());
 408                 string line;
 409                 while (getline(ifs, line)) {
 410                         LYXERR(Debug::LYXVC, "\tEntries: " << line);
 411                         if (contains(line, tmpf))
 412                                 return entries;
 413                 }
 414         }
 415         return FileName();
 416 }
 417
 418
 419 void CVS::scanMaster()
 420 {
 421         LYXERR(Debug::LYXVC, "LyXVC::CVS: scanMaster. \n     Checking: " << master_);
 422         // Ok now we do the real scan...
 423         ifstream ifs(master_.toFilesystemEncoding().c_str());
 424         string name = onlyFileName(file_.absFileName());
 425         string tmpf = '/' + name + '/';
 426         LYXERR(Debug::LYXVC, "\tlooking for `" << tmpf << '\'');
 427         string line;
 428         static regex const reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 429         while (getline(ifs, line)) {
 430                 LYXERR(Debug::LYXVC, "\t  line: " << line);
 431                 if (contains(line, tmpf)) {
 432                         // Ok extract the fields.
 433                         smatch sm;
 434
 435                         regex_match(line, sm, reg);
 436
 437                         //sm[0]; // whole matched string
 438                         //sm[1]; // filename
 439                         version_ = sm.str(2);
 440                         string const file_date = sm.str(3);
 441
 442                         //sm[4]; // options
 443                         //sm[5]; // tag or tagdate
 444                         if (file_.isReadableFile()) {
 445                                 time_t mod = file_.lastModified();
 446                                 string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 447                                 LYXERR(Debug::LYXVC, "Date in Entries: `" << file_date
 448                                         << "'\nModification date of file: `" << mod_date << '\'');
 449                                 if (file_.isReadOnly()) {
 450                                         // readonly checkout is unlocked
 451                                         vcstatus = UNLOCKED;
 452                                 } else {
 453                                         FileName bdir(addPath(master_.onlyPath().absFileName(),"Base"));
 454                                         FileName base(addName(bdir.absFileName(),name));
 455                                         // if base version is existent "cvs edit" was used to lock
 456                                         vcstatus = base.isReadableFile() ? LOCKED : NOLOCKING;
 457                                 }
 458                         } else {
 459                                 vcstatus = NOLOCKING;
 460                         }
 461                         break;
 462                 }
 463         }
 464 }
 465
 466
 467 string const CVS::getTarget(OperationMode opmode) const
 468 {
 469         switch(opmode) {
 470         case Directory:
 471                 // in client server mode CVS does not like full path operand for directory operation
 472                 // since LyX switches to the repo dir "." is good enough as target
 473                 return ".";
 474         case File:
 475                 return quoteName(onlyFileName(owner_->absFileName()));
 476         }
 477         return string();
 478 }
 479
 480
 481 docstring CVS::toString(CvsStatus status) const
 482 {
 483         switch (status) {
 484         case UpToDate:
 485                 return _("Up-to-date");
 486         case LocallyModified:
 487                 return _("Locally Modified");
 488         case LocallyAdded:
 489                 return _("Locally Added");
 490         case NeedsMerge:
 491                 return _("Needs Merge");
 492         case NeedsCheckout:
 493                 return _("Needs Checkout");
 494         case NoCvsFile:
 495                 return _("No CVS file");
 496         case StatusError:
 497                 return _("Cannot retrieve CVS status");
 498         }
 499         return 0;
 500 }
 501
 502
 503 int CVS::doVCCommandWithOutput(string const & cmd, FileName const & path,
 504         FileName const & output, bool reportError)
 505 {
 506         string redirection = output.empty() ? "" : " > " + quoteName(output.toFilesystemEncoding());
 507         return doVCCommand(cmd + redirection, path, reportError);
 508 }
 509
 510
 511 int CVS::doVCCommandCallWithOutput(std::string const & cmd,
 512         support::FileName const & path,
 513         support::FileName const & output)
 514 {
 515         string redirection = output.empty() ? "" : " > " + quoteName(output.toFilesystemEncoding());
 516         return doVCCommandCall(cmd + redirection, path);
 517 }
 518
 519
 520 CVS::CvsStatus CVS::getStatus()
 521 {
 522         FileName tmpf = FileName::tempName("lyxvcout");
 523         if (tmpf.empty()) {
 524                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 525                 return StatusError;
 526         }
 527
 528         if (doVCCommandCallWithOutput("cvs status " + getTarget(File),
 529                 FileName(owner_->filePath()), tmpf)) {
 530                 tmpf.removeFile();
 531                 return StatusError;
 532         }
 533
 534         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 535         CvsStatus status = NoCvsFile;
 536
 537         while (ifs) {
 538                 string line;
 539                 getline(ifs, line);
 540                 LYXERR(Debug::LYXVC, line << "\n");
 541                 if (prefixIs(line, "File:")) {
 542                         if (contains(line, "Up-to-date"))
 543                                 status = UpToDate;
 544                         else if (contains(line, "Locally Modified"))
 545                                 status = LocallyModified;
 546                         else if (contains(line, "Locally Added"))
 547                                 status = LocallyAdded;
 548                         else if (contains(line, "Needs Merge"))
 549                                 status = NeedsMerge;
 550                         else if (contains(line, "Needs Checkout"))
 551                                 status = NeedsCheckout;
 552                 }
 553         }
 554         tmpf.removeFile();
 555         return status;
 556 }
 557
 558 void CVS::getRevisionInfo()
 559 {
 560         if (have_rev_info_)
 561                 return;
 562         have_rev_info_ = true;
 563         FileName tmpf = FileName::tempName("lyxvcout");
 564         if (tmpf.empty()) {
 565                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 566                 return;
 567         }
 568
 569         int rc = doVCCommandCallWithOutput("cvs log -r" + version_
 570                 + " " + getTarget(File),
 571                 FileName(owner_->filePath()), tmpf);
 572         if (rc) {
 573                 tmpf.removeFile();
 574                 LYXERR(Debug::LYXVC, "cvs log failed with exit code " << rc);
 575                 return;
 576         }
 577
 578         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 579         static regex const reg("date: (.*) (.*) (.*);  author: (.*);  state: (.*);(.*)");
 580
 581         while (ifs) {
 582                 string line;
 583                 getline(ifs, line);
 584                 LYXERR(Debug::LYXVC, line << "\n");
 585                 if (prefixIs(line, "date:")) {
 586                         smatch sm;
 587                         regex_match(line, sm, reg);
 588                         //sm[0]; // whole matched string
 589                         rev_date_cache_ = sm[1];
 590                         rev_time_cache_ = sm[2];
 591                         //sm[3]; // GMT offset
 592                         rev_author_cache_ = sm[4];
 593                         break;
 594                 }
 595         }
 596         tmpf.removeFile();
 597         if (rev_author_cache_.empty())
 598                 LYXERR(Debug::LYXVC,
 599                    "Could not retrieve revision info for " << version_ <<
 600                    " of " << getTarget(File));
 601 }
 602
 603
 604 void CVS::registrer(string const & msg)
 605 {
 606         doVCCommand("cvs -q add -m \"" + msg + "\" "
 607                 + getTarget(File),
 608                 FileName(owner_->filePath()));
 609 }
 610
 611
 612 void CVS::getDiff(OperationMode opmode, FileName const & tmpf)
 613 {
 614         doVCCommandWithOutput("cvs diff " + getTarget(opmode),
 615                 FileName(owner_->filePath()), tmpf, false);
 616 }
 617
 618
 619 int CVS::edit()
 620 {
 621         vcstatus = LOCKED;
 622         return doVCCommand("cvs -q edit " + getTarget(File),
 623                 FileName(owner_->filePath()));
 624 }
 625
 626
 627 int CVS::unedit()
 628 {
 629         vcstatus = UNLOCKED;
 630         return doVCCommand("cvs -q unedit " + getTarget(File),
 631                 FileName(owner_->filePath()));
 632 }
 633
 634
 635 int CVS::update(OperationMode opmode, FileName const & tmpf)
 636 {
 637         return doVCCommandWithOutput("cvs -q update "
 638                 + getTarget(opmode),
 639                 FileName(owner_->filePath()), tmpf, false);
 640 }
 641
 642
 643 string CVS::scanLogFile(FileName const & f, string & status)
 644 {
 645         ifstream ifs(f.toFilesystemEncoding().c_str());
 646
 647         while (ifs) {
 648                 string line;
 649                 getline(ifs, line);
 650                 LYXERR(Debug::LYXVC, line << "\n");
 651                 if (!line.empty())
 652                         status += line + "; ";
 653                 if (prefixIs(line, "C ")) {
 654                         ifs.close();
 655                         return line;
 656                 }
 657         }
 658         ifs.close();
 659         return string();
 660 }
 661
 662
 663 string CVS::checkIn(string const & msg)
 664 {
 665         CvsStatus status = getStatus();
 666         switch (status) {
 667         case UpToDate:
 668                 if (vcstatus != NOLOCKING)
 669                         unedit();
 670                 return "CVS: Proceeded";
 671         case LocallyModified:
 672         case LocallyAdded: {
 673                 int rc = doVCCommand("cvs -q commit -m \"" + msg + "\" "
 674                         + getTarget(File),
 675                     FileName(owner_->filePath()));
 676                 return rc ? string() : "CVS: Proceeded";
 677         }
 678         case NeedsMerge:
 679         case NeedsCheckout:
 680                 frontend::Alert::error(_("Revision control error."),
 681                         _("The repository version is newer then the current check out.\n"
 682                           "You have to update from repository first or revert your changes.")) ;
 683                 break;
 684         default:
 685                 frontend::Alert::error(_("Revision control error."),
 686                         bformat(_("Bad status when checking in changes.\n"
 687                                           "\n'%1$s'\n\n"),
 688                                 toString(status)));
 689                 break;
 690         }
 691         return string();
 692 }
 693
 694
 695 bool CVS::isLocked() const
 696 {
 697         FileName fn(owner_->absFileName());
 698         fn.refresh();
 699         return !fn.isReadOnly();
 700 }
 701
 702
 703 bool CVS::checkInEnabled()
 704 {
 705         if (vcstatus != NOLOCKING)
 706                 return isLocked();
 707         else
 708                 return true;
 709 }
 710
 711
 712 bool CVS::isCheckInWithConfirmation()
 713 {
 714         CvsStatus status = getStatus();
 715         return status == LocallyModified || status == LocallyAdded;
 716 }
 717
 718
 719 string CVS::checkOut()
 720 {
 721         if (vcstatus != NOLOCKING && edit())
 722                 return string();
 723         FileName tmpf = FileName::tempName("lyxvcout");
 724         if (tmpf.empty()) {
 725                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 726                 return string();
 727         }
 728
 729         int rc = update(File, tmpf);
 730         string log;
 731         string const res = scanLogFile(tmpf, log);
 732         if (!res.empty()) {
 733                 frontend::Alert::error(_("Revision control error."),
 734                         bformat(_("Error when updating from repository.\n"
 735                                 "You have to manually resolve the conflicts NOW!\n'%1$s'.\n\n"
 736                                 "After pressing OK, LyX will try to reopen the resolved document."),
 737                                 from_local8bit(res)));
 738                 rc = 0;
 739         }
 740
 741         tmpf.erase();
 742         return rc ? string() : log.empty() ? "CVS: Proceeded" : "CVS: " + log;
 743 }
 744
 745
 746 bool CVS::checkOutEnabled()
 747 {
 748         if (vcstatus != NOLOCKING)
 749                 return !isLocked();
 750         else
 751                 return true;
 752 }
 753
 754
 755 string CVS::repoUpdate()
 756 {
 757         FileName tmpf = FileName::tempName("lyxvcout");
 758         if (tmpf.empty()) {
 759                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 760                 return string();
 761         }
 762
 763         getDiff(Directory, tmpf);
 764         docstring res = tmpf.fileContents("UTF-8");
 765         if (!res.empty()) {
 766                 LYXERR(Debug::LYXVC, "Diff detected:\n" << res);
 767                 docstring const file = from_utf8(owner_->filePath());
 768                 docstring text = bformat(_("There were detected changes "
 769                                 "in the working directory:\n%1$s\n\n"
 770                                 "In case of file conflict you have to resolve them "
 771                                 "manually or revert to repository version later."), file);
 772                 int ret = frontend::Alert::prompt(_("Changes detected"),
 773                                 text, 0, 1, _("&Continue"), _("&Abort"), _("View &Log ..."));
 774                 if (ret == 2 ) {
 775                         dispatch(FuncRequest(LFUN_DIALOG_SHOW, "file " + tmpf.absFileName()));
 776                         ret = frontend::Alert::prompt(_("Changes detected"),
 777                                 text, 0, 1, _("&Continue"), _("&Abort"));
 778                         hideDialogs("file", 0);
 779                 }
 780                 if (ret == 1 ) {
 781                         tmpf.removeFile();
 782                         return string();
 783                 }
 784         }
 785
 786         int rc = update(Directory, tmpf);
 787         res += "Update log:\n" + tmpf.fileContents("UTF-8");
 788         LYXERR(Debug::LYXVC, res);
 789
 790         string log;
 791         string sres = scanLogFile(tmpf, log);
 792         if (!sres.empty()) {
 793                 docstring const file = owner_->fileName().displayName(20);
 794                 frontend::Alert::error(_("Revision control error."),
 795                         bformat(_("Error when updating document %1$s from repository.\n"
 796                                           "You have to manually resolve the conflicts NOW!\n'%2$s'.\n\n"
 797                                           "After pressing OK, LyX will try to reopen the resolved document."),
 798                                 file, from_local8bit(sres)));
 799                 rc = 0;
 800         }
 801
 802         tmpf.removeFile();
 803
 804         return rc ? string() : log.empty() ? "CVS: Proceeded" : "CVS: " + log;
 805 }
 806
 807
 808 bool CVS::repoUpdateEnabled()
 809 {
 810         return true;
 811 }
 812
 813
 814 string CVS::lockingToggle()
 815 {
 816         lyxerr << "Sorry, not implemented." << endl;
 817         return string();
 818 }
 819
 820
 821 bool CVS::lockingToggleEnabled()
 822 {
 823         return false;
 824 }
 825
 826
 827 bool CVS::isRevertWithConfirmation()
 828 {
 829         CvsStatus status = getStatus();
 830         return !owner_->isClean() || status == LocallyModified || status == NeedsMerge;
 831 }
 832
 833
 834 void CVS::revert()
 835 {
 836         // Reverts to the version in CVS repository and
 837         // gets the updated version from the repository.
 838         CvsStatus status = getStatus();
 839         switch (status) {
 840         case UpToDate:
 841                 if (vcstatus != NOLOCKING)
 842                         unedit();
 843                 break;
 844         case NeedsMerge:
 845         case NeedsCheckout:
 846         case LocallyModified: {
 847                 FileName f(owner_->absFileName());
 848                 f.removeFile();
 849                 update(File, FileName());
 850                 owner_->markClean();
 851                 break;
 852         }
 853         case LocallyAdded: {
 854                 docstring const file = owner_->fileName().displayName(20);
 855                 frontend::Alert::error(_("Revision control error."),
 856                         bformat(_("The document %1$s is not in repository.\n"
 857                                   "You have to check in the first revision before you can revert."),
 858                                 file)) ;
 859                 break;
 860         }
 861         default: {
 862                 docstring const file = owner_->fileName().displayName(20);
 863                 frontend::Alert::error(_("Revision control error."),
 864                         bformat(_("Cannot revert document %1$s to repository version.\n"
 865                                   "The status '%2$s' is unexpected."),
 866                                 file, toString(status)));
 867                 break;
 868                 }
 869         }
 870 }
 871
 872
 873 void CVS::undoLast()
 874 {
 875         // merge the current with the previous version
 876         // in a reverse patch kind of way, so that the
 877         // result is to revert the last changes.
 878         lyxerr << "Sorry, not implemented." << endl;
 879 }
 880
 881
 882 bool CVS::undoLastEnabled()
 883 {
 884         return false;
 885 }
 886
 887
 888 void CVS::getLog(FileName const & tmpf)
 889 {
 890         doVCCommandWithOutput("cvs log " + getTarget(File),
 891                 FileName(owner_->filePath()),
 892                 tmpf);
 893 }
 894
 895
 896 bool CVS::toggleReadOnlyEnabled()
 897 {
 898         return false;
 899 }
 900
 901
 902 string CVS::revisionInfo(LyXVC::RevisionInfo const info)
 903 {
 904         if (!version_.empty()) {
 905                 getRevisionInfo();
 906                 switch (info) {
 907                 case LyXVC::File:
 908                         return version_;
 909                 case LyXVC::Author:
 910                         return rev_author_cache_;
 911                 case LyXVC::Date:
 912                         return rev_date_cache_;
 913                 case LyXVC::Time:
 914                         return rev_time_cache_;
 915                 default: ;
 916                 }
 917         }
 918         return string();
 919 }
 920
 921
 922 bool CVS::prepareFileRevision(string const &, string &)
 923 {
 924         return false;
 925 }
 926
 927
 928 bool CVS::prepareFileRevisionEnabled()
 929 {
 930         return false;
 931 }
 932
 933
 934 /////////////////////////////////////////////////////////////////////
 935 //
 936 // SVN
 937 //
 938 /////////////////////////////////////////////////////////////////////
 939
 940 SVN::SVN(FileName const & m, FileName const & f)
 941 {
 942         owner_ = 0;
 943         master_ = m;
 944         file_ = f;
 945         locked_mode_ = 0;
 946         scanMaster();
 947 }
 948
 949
 950 FileName const SVN::findFile(FileName const & file)
 951 {
 952         // First we look for the .svn/entries in the same dir
 953         // where we have file.
 954         FileName const entries(onlyPath(file.absFileName()) + "/.svn/entries");
 955         string const tmpf = onlyFileName(file.absFileName());
 956         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under svn in `" << entries
 957                              << "' for `" << tmpf << '\'');
 958         if (entries.isReadableFile()) {
 959                 // Ok we are at least in a SVN dir. Parse the .svn/entries
 960                 // and see if we can find this file. We do a fast and
 961                 // dirty parse here.
 962                 ifstream ifs(entries.toFilesystemEncoding().c_str());
 963                 string line, oldline;
 964                 while (getline(ifs, line)) {
 965                         if (line == "dir" || line == "file")
 966                                 LYXERR(Debug::LYXVC, "\tEntries: " << oldline);
 967                         if (oldline == tmpf && line == "file")
 968                                 return entries;
 969                         oldline = line;
 970                 }
 971         }
 972         return FileName();
 973 }
 974
 975
 976 void SVN::scanMaster()
 977 {
 978         // vcstatus code is somewhat superflous, until we want
 979         // to implement read-only toggle for svn.
 980         vcstatus = NOLOCKING;
 981         if (checkLockMode()) {
 982                 if (isLocked()) {
 983                         vcstatus = LOCKED;
 984                 } else {
 985                         vcstatus = UNLOCKED;
 986                 }
 987         }
 988 }
 989
 990
 991 bool SVN::checkLockMode()
 992 {
 993         FileName tmpf = FileName::tempName("lyxvcout");
 994         if (tmpf.empty()){
 995                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 996                 return N_("Error: Could not generate logfile.");
 997         }
 998
 999         LYXERR(Debug::LYXVC, "Detecting locking mode...");
1000         if (doVCCommandCall("svn proplist " + quoteName(file_.onlyFileName())
1001                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1002                     file_.onlyPath()))
1003                 return false;
1004
1005         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
1006         string line;
1007         bool ret = false;
1008
1009         while (ifs) {
1010                 getline(ifs, line);
1011                 LYXERR(Debug::LYXVC, line);
1012                 if (contains(line, "svn:needs-lock"))
1013                         ret = true;
1014         }
1015         LYXERR(Debug::LYXVC, "Locking enabled: " << ret);
1016         ifs.close();
1017         locked_mode_ = ret;
1018         return ret;
1019
1020 }
1021
1022
1023 bool SVN::isLocked() const
1024 {
1025         file_.refresh();
1026         return !file_.isReadOnly();
1027 }
1028
1029
1030 void SVN::registrer(string const & /*msg*/)
1031 {
1032         doVCCommand("svn add -q " + quoteName(onlyFileName(owner_->absFileName())),
1033                     FileName(owner_->filePath()));
1034 }
1035
1036
1037 string SVN::checkIn(string const & msg)
1038 {
1039         FileName tmpf = FileName::tempName("lyxvcout");
1040         if (tmpf.empty()){
1041                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1042                 return N_("Error: Could not generate logfile.");
1043         }
1044
1045         doVCCommand("svn commit -m \"" + msg + "\" "
1046                     + quoteName(onlyFileName(owner_->absFileName()))
1047                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1048                     FileName(owner_->filePath()));
1049
1050         string log;
1051         string res = scanLogFile(tmpf, log);
1052         if (!res.empty())
1053                 frontend::Alert::error(_("Revision control error."),
1054                                 _("Error when committing to repository.\n"
1055                                 "You have to manually resolve the problem.\n"
1056                                 "LyX will reopen the document after you press OK."));
1057         else
1058                 fileLock(false, tmpf, log);
1059
1060         tmpf.erase();
1061         return log.empty() ? string() : "SVN: " + log;
1062 }
1063
1064
1065 bool SVN::checkInEnabled()
1066 {
1067         if (locked_mode_)
1068                 return isLocked();
1069         else
1070                 return true;
1071 }
1072
1073
1074 bool SVN::isCheckInWithConfirmation()
1075 {
1076         // FIXME one day common getDiff and perhaps OpMode for all backends
1077
1078         FileName tmpf = FileName::tempName("lyxvcout");
1079         if (tmpf.empty()) {
1080                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1081                 return true;
1082         }
1083
1084         doVCCommandCall("svn diff " + quoteName(owner_->absFileName())
1085                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1086                 FileName(owner_->filePath()));
1087
1088         docstring diff = tmpf.fileContents("UTF-8");
1089         tmpf.erase();
1090
1091         if (diff.empty())
1092                 return false;
1093
1094         return true;
1095 }
1096
1097
1098 // FIXME Correctly return code should be checked instead of this.
1099 // This would need another solution than just plain startscript.
1100 // Hint from Andre': QProcess::readAllStandardError()...
1101 string SVN::scanLogFile(FileName const & f, string & status)
1102 {
1103         ifstream ifs(f.toFilesystemEncoding().c_str());
1104         string line;
1105
1106         while (ifs) {
1107                 getline(ifs, line);
1108                 LYXERR(Debug::LYXVC, line << "\n");
1109                 if (!line.empty())
1110                         status += line + "; ";
1111                 if (prefixIs(line, "C ") || prefixIs(line, "CU ")
1112                                          || contains(line, "Commit failed")) {
1113                         ifs.close();
1114                         return line;
1115                 }
1116                 if (contains(line, "svn:needs-lock")) {
1117                         ifs.close();
1118                         return line;
1119                 }
1120         }
1121         ifs.close();
1122         return string();
1123 }
1124
1125
1126 void SVN::fileLock(bool lock, FileName const & tmpf, string &status)
1127 {
1128         if (!locked_mode_ || (isLocked() == lock))
1129                 return;
1130
1131         string const arg = lock ? "lock " : "unlock ";
1132         doVCCommand("svn "+ arg + quoteName(onlyFileName(owner_->absFileName()))
1133                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1134                     FileName(owner_->filePath()));
1135
1136         // Lock error messages go unfortunately on stderr and are unreachible this way.
1137         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
1138         string line;
1139         while (ifs) {
1140                 getline(ifs, line);
1141                 if (!line.empty()) status += line + "; ";
1142         }
1143         ifs.close();
1144
1145         if (!isLocked() && lock)
1146                 frontend::Alert::error(_("Revision control error."),
1147                         _("Error while acquiring write lock.\n"
1148                         "Another user is most probably editing\n"
1149                         "the current document now!\n"
1150                         "Also check the access to the repository."));
1151         if (isLocked() && !lock)
1152                 frontend::Alert::error(_("Revision control error."),
1153                         _("Error while releasing write lock.\n"
1154                         "Check the access to the repository."));
1155 }
1156
1157
1158 string SVN::checkOut()
1159 {
1160         FileName tmpf = FileName::tempName("lyxvcout");
1161         if (tmpf.empty()) {
1162                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1163                 return N_("Error: Could not generate logfile.");
1164         }
1165
1166         doVCCommand("svn update --non-interactive " + quoteName(onlyFileName(owner_->absFileName()))
1167                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1168                     FileName(owner_->filePath()));
1169
1170         string log;
1171         string const res = scanLogFile(tmpf, log);
1172         if (!res.empty())
1173                 frontend::Alert::error(_("Revision control error."),
1174                         bformat(_("Error when updating from repository.\n"
1175                                 "You have to manually resolve the conflicts NOW!\n'%1$s'.\n\n"
1176                                 "After pressing OK, LyX will try to reopen the resolved document."),
1177                         from_local8bit(res)));
1178
1179         fileLock(true, tmpf, log);
1180
1181         tmpf.erase();
1182         return log.empty() ? string() : "SVN: " + log;
1183 }
1184
1185
1186 bool SVN::checkOutEnabled()
1187 {
1188         if (locked_mode_)
1189                 return !isLocked();
1190         else
1191                 return true;
1192 }
1193
1194
1195 string SVN::repoUpdate()
1196 {
1197         FileName tmpf = FileName::tempName("lyxvcout");
1198         if (tmpf.empty()) {
1199                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1200                 return N_("Error: Could not generate logfile.");
1201         }
1202
1203         doVCCommand("svn diff " + quoteName(owner_->filePath())
1204                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1205                 FileName(owner_->filePath()));
1206         docstring res = tmpf.fileContents("UTF-8");
1207         if (!res.empty()) {
1208                 LYXERR(Debug::LYXVC, "Diff detected:\n" << res);
1209                 docstring const file = from_utf8(owner_->filePath());
1210                 docstring text = bformat(_("There were detected changes "
1211                                 "in the working directory:\n%1$s\n\n"
1212                                 "In case of file conflict version of the local directory files "
1213                                 "will be preferred."
1214                                 "\n\nContinue?"), file);
1215                 int ret = frontend::Alert::prompt(_("Changes detected"),
1216                                 text, 0, 1, _("&Yes"), _("&No"), _("View &Log ..."));
1217                 if (ret == 2 ) {
1218                         dispatch(FuncRequest(LFUN_DIALOG_SHOW, "file " + tmpf.absFileName()));
1219                         ret = frontend::Alert::prompt(_("Changes detected"),
1220                                 text, 0, 1, _("&Yes"), _("&No"));
1221                         hideDialogs("file", 0);
1222                 }
1223                 if (ret == 1 ) {
1224                         tmpf.erase();
1225                         return string();
1226                 }
1227         }
1228
1229         // Reverting looks too harsh, see bug #6255.
1230         // doVCCommand("svn revert -R " + quoteName(owner_->filePath())
1231         // + " > " + quoteName(tmpf.toFilesystemEncoding()),
1232         // FileName(owner_->filePath()));
1233         // res = "Revert log:\n" + tmpf.fileContents("UTF-8");
1234         doVCCommand("svn update --accept mine-full " + quoteName(owner_->filePath())
1235                 + " > " + quoteName(tmpf.toFilesystemEncoding()),
1236                 FileName(owner_->filePath()));
1237         res += "Update log:\n" + tmpf.fileContents("UTF-8");
1238
1239         LYXERR(Debug::LYXVC, res);
1240         tmpf.erase();
1241         return to_utf8(res);
1242 }
1243
1244
1245 bool SVN::repoUpdateEnabled()
1246 {
1247         return true;
1248 }
1249
1250
1251 string SVN::lockingToggle()
1252 {
1253         FileName tmpf = FileName::tempName("lyxvcout");
1254         if (tmpf.empty()) {
1255                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1256                 return N_("Error: Could not generate logfile.");
1257         }
1258
1259         int ret = doVCCommand("svn proplist " + quoteName(onlyFileName(owner_->absFileName()))
1260                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1261                     FileName(owner_->filePath()));
1262         if (ret)
1263                 return string();
1264
1265         string log;
1266         string res = scanLogFile(tmpf, log);
1267         bool locking = contains(res, "svn:needs-lock");
1268         if (!locking)
1269                 ret = doVCCommand("svn propset svn:needs-lock ON "
1270                     + quoteName(onlyFileName(owner_->absFileName()))
1271                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1272                     FileName(owner_->filePath()));
1273         else
1274                 ret = doVCCommand("svn propdel svn:needs-lock "
1275                     + quoteName(onlyFileName(owner_->absFileName()))
1276                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1277                     FileName(owner_->filePath()));
1278         if (ret)
1279                 return string();
1280
1281         tmpf.erase();
1282         frontend::Alert::warning(_("VCN File Locking"),
1283                 (locking ? _("Locking property unset.") : _("Locking property set.")) + "\n"
1284                 + _("Do not forget to commit the locking property into the repository."),
1285                 true);
1286
1287         return string("SVN: ") +  N_("Locking property set.");
1288 }
1289
1290
1291 bool SVN::lockingToggleEnabled()
1292 {
1293         return true;
1294 }
1295
1296
1297 void SVN::revert()
1298 {
1299         // Reverts to the version in SVN repository and
1300         // gets the updated version from the repository.
1301         string const fil = quoteName(onlyFileName(owner_->absFileName()));
1302
1303         doVCCommand("svn revert -q " + fil,
1304                     FileName(owner_->filePath()));
1305         owner_->markClean();
1306 }
1307
1308
1309 bool SVN::isRevertWithConfirmation()
1310 {
1311         //FIXME owner && diff
1312         return true;
1313 }
1314
1315
1316 void SVN::undoLast()
1317 {
1318         // merge the current with the previous version
1319         // in a reverse patch kind of way, so that the
1320         // result is to revert the last changes.
1321         lyxerr << "Sorry, not implemented." << endl;
1322 }
1323
1324
1325 bool SVN::undoLastEnabled()
1326 {
1327         return false;
1328 }
1329
1330
1331 string SVN::revisionInfo(LyXVC::RevisionInfo const info)
1332 {
1333         if (info == LyXVC::Tree) {
1334                         if (rev_tree_cache_.empty())
1335                                 if (!getTreeRevisionInfo())
1336                                         rev_tree_cache_ = "?";
1337                         if (rev_tree_cache_ == "?")
1338                                 return string();
1339
1340                         return rev_tree_cache_;
1341         }
1342
1343         // fill the rest of the attributes for a single file
1344         if (rev_file_cache_.empty())
1345                 if (!getFileRevisionInfo())
1346                         rev_file_cache_ = "?";
1347
1348         switch (info) {
1349                 case LyXVC::File:
1350                         if (rev_file_cache_ == "?")
1351                                 return string();
1352                         return rev_file_cache_;
1353                 case LyXVC::Author:
1354                         return rev_author_cache_;
1355                 case LyXVC::Date:
1356                         return rev_date_cache_;
1357                 case LyXVC::Time:
1358                         return rev_time_cache_;
1359                 default: ;
1360
1361         }
1362
1363         return string();
1364 }
1365
1366
1367 bool SVN::getFileRevisionInfo()
1368 {
1369         FileName tmpf = FileName::tempName("lyxvcout");
1370         if (tmpf.empty()) {
1371                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1372                 return N_("Error: Could not generate logfile.");
1373         }
1374
1375         doVCCommand("svn info --xml " + quoteName(onlyFileName(owner_->absFileName()))
1376                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1377                     FileName(owner_->filePath()));
1378
1379         if (tmpf.empty())
1380                 return false;
1381
1382         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
1383         string line;
1384         // commit log part
1385         bool c = false;
1386         string rev;
1387
1388         while (ifs) {
1389                 getline(ifs, line);
1390                 LYXERR(Debug::LYXVC, line);
1391                 if (prefixIs(line, "<commit"))
1392                         c = true;
1393                 if (c && prefixIs(line, "   revision=\"") && suffixIs(line, "\">")) {
1394                         string l1 = subst(line, "revision=\"", "");
1395                         string l2 = trim(subst(l1, "\">", ""));
1396                         if (isStrInt(l2))
1397                                 rev_file_cache_ = rev = l2;
1398                 }
1399                 if (c && prefixIs(line, "<author>") && suffixIs(line, "</author>")) {
1400                         string l1 = subst(line, "<author>", "");
1401                         string l2 = subst(l1, "</author>", "");
1402                         rev_author_cache_ = l2;
1403                 }
1404                 if (c && prefixIs(line, "<date>") && suffixIs(line, "</date>")) {
1405                         string l1 = subst(line, "<date>", "");
1406                         string l2 = subst(l1, "</date>", "");
1407                         l2 = split(l2, l1, 'T');
1408                         rev_date_cache_ = l1;
1409                         l2 = split(l2, l1, '.');
1410                         rev_time_cache_ = l1;
1411                 }
1412         }
1413
1414         ifs.close();
1415         tmpf.erase();
1416         return !rev.empty();
1417 }
1418
1419
1420 bool SVN::getTreeRevisionInfo()
1421 {
1422         FileName tmpf = FileName::tempName("lyxvcout");
1423         if (tmpf.empty()) {
1424                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1425                 return N_("Error: Could not generate logfile.");
1426         }
1427
1428         doVCCommand("svnversion -n . > " + quoteName(tmpf.toFilesystemEncoding()),
1429                     FileName(owner_->filePath()));
1430
1431         if (tmpf.empty())
1432                 return false;
1433
1434         // only first line in case something bad happens.
1435         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
1436         string line;
1437         getline(ifs, line);
1438         ifs.close();
1439         tmpf.erase();
1440
1441         rev_tree_cache_ = line;
1442         return !line.empty();
1443 }
1444
1445
1446 void SVN::getLog(FileName const & tmpf)
1447 {
1448         doVCCommand("svn log " + quoteName(onlyFileName(owner_->absFileName()))
1449                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1450                     FileName(owner_->filePath()));
1451 }
1452
1453
1454 bool SVN::prepareFileRevision(string const & revis, string & f)
1455 {
1456         if (!isStrInt(revis))
1457                 return false;
1458
1459         int rev = convert<int>(revis);
1460         if (rev <= 0)
1461                 if (!getFileRevisionInfo())
1462                         return false;
1463         if (rev == 0)
1464                 rev = convert<int>(rev_file_cache_);
1465         // go back for minus rev
1466         else if (rev < 0) {
1467                 rev = rev + convert<int>(rev_file_cache_);
1468                 if (rev < 1)
1469                         return false;
1470         }
1471
1472         string revname = convert<string>(rev);
1473         FileName tmpf = FileName::tempName("lyxvcrev_" + revname + "_");
1474         if (tmpf.empty()) {
1475                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1476                 return N_("Error: Could not generate logfile.");
1477         }
1478
1479         doVCCommand("svn cat -r " + revname + " "
1480                       + quoteName(onlyFileName(owner_->absFileName()))
1481                       + " > " + quoteName(tmpf.toFilesystemEncoding()),
1482                 FileName(owner_->filePath()));
1483         if (tmpf.isFileEmpty())
1484                 return false;
1485
1486         f = tmpf.absFileName();
1487         return true;
1488 }
1489
1490
1491 bool SVN::prepareFileRevisionEnabled()
1492 {
1493         return true;
1494 }
1495
1496
1497
1498 bool SVN::toggleReadOnlyEnabled()
1499 {
1500         return false;
1501 }
1502
1503
1504 } // namespace lyx