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)
  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)
  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 string RCS::checkOut()
 200 {
 201         owner_->markClean();
 202         int ret = doVCCommand("co -q -l " + quoteName(onlyFileName(owner_->absFileName())),
 203                     FileName(owner_->filePath()));
 204         return ret ? string() : "RCS: Proceeded";
 205 }
 206
 207
 208 bool RCS::checkOutEnabled()
 209 {
 210         return owner_ && owner_->isReadonly();
 211 }
 212
 213
 214 string RCS::repoUpdate()
 215 {
 216         lyxerr << "Sorry, not implemented." << endl;
 217         return string();
 218 }
 219
 220
 221 bool RCS::repoUpdateEnabled()
 222 {
 223         return false;
 224 }
 225
 226
 227 string RCS::lockingToggle()
 228 {
 229         lyxerr << "Sorry, not implemented." << endl;
 230         return string();
 231 }
 232
 233
 234 bool RCS::lockingToggleEnabled()
 235 {
 236         return false;
 237 }
 238
 239
 240 void RCS::revert()
 241 {
 242         doVCCommand("co -f -u" + version_ + " "
 243                     + quoteName(onlyFileName(owner_->absFileName())),
 244                     FileName(owner_->filePath()));
 245         // We ignore changes and just reload!
 246         owner_->markClean();
 247 }
 248
 249
 250 void RCS::undoLast()
 251 {
 252         LYXERR(Debug::LYXVC, "LyXVC: undoLast");
 253         doVCCommand("rcs -o" + version_ + " "
 254                     + quoteName(onlyFileName(owner_->absFileName())),
 255                     FileName(owner_->filePath()));
 256 }
 257
 258
 259 bool RCS::undoLastEnabled()
 260 {
 261         return true;
 262 }
 263
 264
 265 void RCS::getLog(FileName const & tmpf)
 266 {
 267         doVCCommand("rlog " + quoteName(onlyFileName(owner_->absFileName()))
 268                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 269                     FileName(owner_->filePath()));
 270 }
 271
 272
 273 bool RCS::toggleReadOnlyEnabled()
 274 {
 275         // This got broken somewhere along lfuns dispatch reorganization.
 276         // reloadBuffer would be needed after this, but thats problematic
 277         // since we are inside Buffer::dispatch.
 278         // return true;
 279         return false;
 280 }
 281
 282 string RCS::revisionInfo(LyXVC::RevisionInfo const info)
 283 {
 284         if (info == LyXVC::File)
 285                 return version_;
 286         return string();
 287 }
 288
 289
 290 bool RCS::prepareFileRevision(string const &revis, string & f)
 291 {
 292         string rev = revis;
 293
 294         if (isStrInt(rev)) {
 295                 int back = convert<int>(rev);
 296                 // if positive use as the last number in the whole revision string
 297                 if (back > 0) {
 298                         string base;
 299                         rsplit(version_, base , '.' );
 300                         rev = base + "." + rev;
 301                 }
 302                 if (back == 0)
 303                         rev = version_;
 304                 // we care about the last number from revision string
 305                 // in case of backward indexing
 306                 if (back < 0) {
 307                         string cur, base;
 308                         cur = rsplit(version_, base , '.' );
 309                         if (!isStrInt(cur))
 310                                 return false;
 311                         int want = convert<int>(cur) + back;
 312                         if (want <= 0)
 313                                 return false;
 314
 315                         rev = base + "." + convert<string>(want);
 316                 }
 317         }
 318
 319         FileName tmpf = FileName::tempName("lyxvcrev_" + rev + "_");
 320         if (tmpf.empty()) {
 321                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 322                 return N_("Error: Could not generate logfile.");
 323         }
 324
 325         doVCCommand("co -p" + rev + " "
 326                       + quoteName(onlyFileName(owner_->absFileName()))
 327                       + " > " + quoteName(tmpf.toFilesystemEncoding()),
 328                 FileName(owner_->filePath()));
 329         if (tmpf.isFileEmpty())
 330                 return false;
 331
 332         f = tmpf.absFileName();
 333         return true;
 334 }
 335
 336
 337 bool RCS::prepareFileRevisionEnabled()
 338 {
 339         return true;
 340 }
 341
 342
 343 /////////////////////////////////////////////////////////////////////
 344 //
 345 // CVS
 346 //
 347 /////////////////////////////////////////////////////////////////////
 348
 349 CVS::CVS(FileName const & m, FileName const & f)
 350 {
 351         master_ = m;
 352         file_ = f;
 353         scanMaster();
 354 }
 355
 356
 357 FileName const CVS::findFile(FileName const & file)
 358 {
 359         // First we look for the CVS/Entries in the same dir
 360         // where we have file.
 361         FileName const entries(onlyPath(file.absFileName()) + "/CVS/Entries");
 362         string const tmpf = '/' + onlyFileName(file.absFileName()) + '/';
 363         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under cvs in `" << entries
 364                              << "' for `" << tmpf << '\'');
 365         if (entries.isReadableFile()) {
 366                 // Ok we are at least in a CVS dir. Parse the CVS/Entries
 367                 // and see if we can find this file. We do a fast and
 368                 // dirty parse here.
 369                 ifstream ifs(entries.toFilesystemEncoding().c_str());
 370                 string line;
 371                 while (getline(ifs, line)) {
 372                         LYXERR(Debug::LYXVC, "\tEntries: " << line);
 373                         if (contains(line, tmpf))
 374                                 return entries;
 375                 }
 376         }
 377         return FileName();
 378 }
 379
 380
 381 void CVS::scanMaster()
 382 {
 383         LYXERR(Debug::LYXVC, "LyXVC::CVS: scanMaster. \n     Checking: " << master_);
 384         // Ok now we do the real scan...
 385         ifstream ifs(master_.toFilesystemEncoding().c_str());
 386         string tmpf = '/' + onlyFileName(file_.absFileName()) + '/';
 387         LYXERR(Debug::LYXVC, "\tlooking for `" << tmpf << '\'');
 388         string line;
 389         static regex const reg("/(.*)/(.*)/(.*)/(.*)/(.*)");
 390         while (getline(ifs, line)) {
 391                 LYXERR(Debug::LYXVC, "\t  line: " << line);
 392                 if (contains(line, tmpf)) {
 393                         // Ok extract the fields.
 394                         smatch sm;
 395
 396                         regex_match(line, sm, reg);
 397
 398                         //sm[0]; // whole matched string
 399                         //sm[1]; // filename
 400                         version_ = sm.str(2);
 401                         string const file_date = sm.str(3);
 402
 403                         //sm[4]; // options
 404                         //sm[5]; // tag or tagdate
 405                         // FIXME: must double check file is stattable/existing
 406                         time_t mod = file_.lastModified();
 407                         string mod_date = rtrim(asctime(gmtime(&mod)), "\n");
 408                         LYXERR(Debug::LYXVC, "Date in Entries: `" << file_date
 409                                 << "'\nModification date of file: `" << mod_date << '\'');
 410                         //FIXME this whole locking bussiness is not working under cvs and the machinery
 411                         // conforms to the ci usage, not cvs.
 412                         if (file_date == mod_date) {
 413                                 locker_ = "Unlocked";
 414                                 vcstatus = UNLOCKED;
 415                         } else {
 416                                 // Here we should also do some more checking
 417                                 // to see if there are conflicts or not.
 418                                 locker_ = "Locked";
 419                                 vcstatus = LOCKED;
 420                         }
 421                         break;
 422                 }
 423         }
 424 }
 425
 426
 427 void CVS::registrer(string const & msg)
 428 {
 429         doVCCommand("cvs -q add -m \"" + msg + "\" "
 430                     + quoteName(onlyFileName(owner_->absFileName())),
 431                     FileName(owner_->filePath()));
 432 }
 433
 434
 435 string CVS::checkIn(string const & msg)
 436 {
 437         int ret = doVCCommand("cvs -q commit -m \"" + msg + "\" "
 438                     + quoteName(onlyFileName(owner_->absFileName())),
 439                     FileName(owner_->filePath()));
 440         return ret ? string() : "CVS: Proceeded";
 441 }
 442
 443
 444 bool CVS::checkInEnabled()
 445 {
 446         return true;
 447 }
 448
 449
 450 string CVS::checkOut()
 451 {
 452         // cvs update or perhaps for cvs this should be a noop
 453         // we need to detect conflict (eg "C" in output)
 454         // before we can do this.
 455         lyxerr << "Sorry, not implemented." << endl;
 456         return string();
 457 }
 458
 459
 460 bool CVS::checkOutEnabled()
 461 {
 462         return false;
 463 }
 464
 465
 466 string CVS::repoUpdate()
 467 {
 468         lyxerr << "Sorry, not implemented." << endl;
 469         return string();
 470 }
 471
 472
 473 bool CVS::repoUpdateEnabled()
 474 {
 475         return false;
 476 }
 477
 478
 479 string CVS::lockingToggle()
 480 {
 481         lyxerr << "Sorry, not implemented." << endl;
 482         return string();
 483 }
 484
 485
 486 bool CVS::lockingToggleEnabled()
 487 {
 488         return false;
 489 }
 490
 491
 492 void CVS::revert()
 493 {
 494         // Reverts to the version in CVS repository and
 495         // gets the updated version from the repository.
 496         string const fil = quoteName(onlyFileName(owner_->absFileName()));
 497         // This is sensitive operation, so at lest some check about
 498         // existence of cvs program and its file
 499         if (doVCCommand("cvs log "+ fil, FileName(owner_->filePath())))
 500                 return;
 501         FileName f(owner_->absFileName());
 502         f.removeFile();
 503         doVCCommand("cvs update " + fil,
 504                     FileName(owner_->filePath()));
 505         owner_->markClean();
 506 }
 507
 508
 509 void CVS::undoLast()
 510 {
 511         // merge the current with the previous version
 512         // in a reverse patch kind of way, so that the
 513         // result is to revert the last changes.
 514         lyxerr << "Sorry, not implemented." << endl;
 515 }
 516
 517
 518 bool CVS::undoLastEnabled()
 519 {
 520         return false;
 521 }
 522
 523
 524 void CVS::getLog(FileName const & tmpf)
 525 {
 526         doVCCommand("cvs log " + quoteName(onlyFileName(owner_->absFileName()))
 527                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 528                     FileName(owner_->filePath()));
 529 }
 530
 531
 532 bool CVS::toggleReadOnlyEnabled()
 533 {
 534         return false;
 535 }
 536
 537
 538 string CVS::revisionInfo(LyXVC::RevisionInfo const info)
 539 {
 540         if (info == LyXVC::File)
 541                 return version_;
 542         return string();
 543 }
 544
 545
 546 bool CVS::prepareFileRevision(string const &, string &)
 547 {
 548         return false;
 549 }
 550
 551
 552 bool CVS::prepareFileRevisionEnabled()
 553 {
 554         return false;
 555 }
 556
 557
 558 /////////////////////////////////////////////////////////////////////
 559 //
 560 // SVN
 561 //
 562 /////////////////////////////////////////////////////////////////////
 563
 564 SVN::SVN(FileName const & m, FileName const & f)
 565 {
 566         owner_ = 0;
 567         master_ = m;
 568         file_ = f;
 569         locked_mode_ = 0;
 570         scanMaster();
 571 }
 572
 573
 574 FileName const SVN::findFile(FileName const & file)
 575 {
 576         // First we look for the .svn/entries in the same dir
 577         // where we have file.
 578         FileName const entries(onlyPath(file.absFileName()) + "/.svn/entries");
 579         string const tmpf = onlyFileName(file.absFileName());
 580         LYXERR(Debug::LYXVC, "LyXVC: Checking if file is under svn in `" << entries
 581                              << "' for `" << tmpf << '\'');
 582         if (entries.isReadableFile()) {
 583                 // Ok we are at least in a SVN dir. Parse the .svn/entries
 584                 // and see if we can find this file. We do a fast and
 585                 // dirty parse here.
 586                 ifstream ifs(entries.toFilesystemEncoding().c_str());
 587                 string line, oldline;
 588                 while (getline(ifs, line)) {
 589                         if (line == "dir" || line == "file")
 590                                 LYXERR(Debug::LYXVC, "\tEntries: " << oldline);
 591                         if (oldline == tmpf && line == "file")
 592                                 return entries;
 593                         oldline = line;
 594                 }
 595         }
 596         return FileName();
 597 }
 598
 599
 600 void SVN::scanMaster()
 601 {
 602         // vcstatus code is somewhat superflous, until we want
 603         // to implement read-only toggle for svn.
 604         vcstatus = NOLOCKING;
 605         if (checkLockMode()) {
 606                 if (isLocked()) {
 607                         vcstatus = LOCKED;
 608                 } else {
 609                         vcstatus = UNLOCKED;
 610                 }
 611         }
 612 }
 613
 614
 615 bool SVN::checkLockMode()
 616 {
 617         FileName tmpf = FileName::tempName("lyxvcout");
 618         if (tmpf.empty()){
 619                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 620                 return N_("Error: Could not generate logfile.");
 621         }
 622
 623         LYXERR(Debug::LYXVC, "Detecting locking mode...");
 624         if (doVCCommandCall("svn proplist " + quoteName(file_.onlyFileName())
 625                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 626                     file_.onlyPath()))
 627                 return false;
 628
 629         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 630         string line;
 631         bool ret = false;
 632
 633         while (ifs) {
 634                 getline(ifs, line);
 635                 LYXERR(Debug::LYXVC, line);
 636                 if (contains(line, "svn:needs-lock"))
 637                         ret = true;
 638         }
 639         LYXERR(Debug::LYXVC, "Locking enabled: " << ret);
 640         ifs.close();
 641         locked_mode_ = ret;
 642         return ret;
 643
 644 }
 645
 646
 647 bool SVN::isLocked() const
 648 {
 649         file_.refresh();
 650         return !file_.isReadOnly();
 651 }
 652
 653
 654 void SVN::registrer(string const & /*msg*/)
 655 {
 656         doVCCommand("svn add -q " + quoteName(onlyFileName(owner_->absFileName())),
 657                     FileName(owner_->filePath()));
 658 }
 659
 660
 661 string SVN::checkIn(string const & msg)
 662 {
 663         FileName tmpf = FileName::tempName("lyxvcout");
 664         if (tmpf.empty()){
 665                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 666                 return N_("Error: Could not generate logfile.");
 667         }
 668
 669         doVCCommand("svn commit -m \"" + msg + "\" "
 670                     + quoteName(onlyFileName(owner_->absFileName()))
 671                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 672                     FileName(owner_->filePath()));
 673
 674         string log;
 675         string res = scanLogFile(tmpf, log);
 676         if (!res.empty())
 677                 frontend::Alert::error(_("Revision control error."),
 678                                 _("Error when committing to repository.\n"
 679                                 "You have to manually resolve the problem.\n"
 680                                 "LyX will reopen the document after you press OK."));
 681         else
 682                 fileLock(false, tmpf, log);
 683
 684         tmpf.erase();
 685         return log.empty() ? string() : "SVN: " + log;
 686 }
 687
 688
 689 bool SVN::checkInEnabled()
 690 {
 691         if (locked_mode_)
 692                 return isLocked();
 693         else
 694                 return true;
 695 }
 696
 697
 698 // FIXME Correctly return code should be checked instead of this.
 699 // This would need another solution than just plain startscript.
 700 // Hint from Andre': QProcess::readAllStandardError()...
 701 string SVN::scanLogFile(FileName const & f, string & status)
 702 {
 703         ifstream ifs(f.toFilesystemEncoding().c_str());
 704         string line;
 705
 706         while (ifs) {
 707                 getline(ifs, line);
 708                 LYXERR(Debug::LYXVC, line << "\n");
 709                 if (!line.empty())
 710                         status += line + "; ";
 711                 if (prefixIs(line, "C ") || prefixIs(line, "CU ")
 712                                          || contains(line, "Commit failed")) {
 713                         ifs.close();
 714                         return line;
 715                 }
 716                 if (contains(line, "svn:needs-lock")) {
 717                         ifs.close();
 718                         return line;
 719                 }
 720         }
 721         ifs.close();
 722         return string();
 723 }
 724
 725
 726 void SVN::fileLock(bool lock, FileName const & tmpf, string &status)
 727 {
 728         if (!locked_mode_ || (isLocked() == lock))
 729                 return;
 730
 731         string const arg = lock ? "lock " : "unlock ";
 732         doVCCommand("svn "+ arg + quoteName(onlyFileName(owner_->absFileName()))
 733                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 734                     FileName(owner_->filePath()));
 735
 736         // Lock error messages go unfortunately on stderr and are unreachible this way.
 737         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 738         string line;
 739         while (ifs) {
 740                 getline(ifs, line);
 741                 if (!line.empty()) status += line + "; ";
 742         }
 743         ifs.close();
 744
 745         if (!isLocked() && lock)
 746                 frontend::Alert::error(_("Revision control error."),
 747                         _("Error while acquiring write lock.\n"
 748                         "Another user is most probably editing\n"
 749                         "the current document now!\n"
 750                         "Also check the access to the repository."));
 751         if (isLocked() && !lock)
 752                 frontend::Alert::error(_("Revision control error."),
 753                         _("Error while releasing write lock.\n"
 754                         "Check the access to the repository."));
 755 }
 756
 757
 758 string SVN::checkOut()
 759 {
 760         FileName tmpf = FileName::tempName("lyxvcout");
 761         if (tmpf.empty()) {
 762                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 763                 return N_("Error: Could not generate logfile.");
 764         }
 765
 766         doVCCommand("svn update --non-interactive " + quoteName(onlyFileName(owner_->absFileName()))
 767                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 768                     FileName(owner_->filePath()));
 769
 770         string log;
 771         string const res = scanLogFile(tmpf, log);
 772         if (!res.empty())
 773                 frontend::Alert::error(_("Revision control error."),
 774                         bformat(_("Error when updating from repository.\n"
 775                                 "You have to manually resolve the conflicts NOW!\n'%1$s'.\n\n"
 776                                 "After pressing OK, LyX will try to reopen the resolved document."),
 777                         from_local8bit(res)));
 778
 779         fileLock(true, tmpf, log);
 780
 781         tmpf.erase();
 782         return log.empty() ? string() : "SVN: " + log;
 783 }
 784
 785
 786 bool SVN::checkOutEnabled()
 787 {
 788         if (locked_mode_)
 789                 return !isLocked();
 790         else
 791                 return true;
 792 }
 793
 794
 795 string SVN::repoUpdate()
 796 {
 797         FileName tmpf = FileName::tempName("lyxvcout");
 798         if (tmpf.empty()) {
 799                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 800                 return N_("Error: Could not generate logfile.");
 801         }
 802
 803         doVCCommand("svn diff " + quoteName(owner_->filePath())
 804                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 805                 FileName(owner_->filePath()));
 806         docstring res = tmpf.fileContents("UTF-8");
 807         if (!res.empty()) {
 808                 LYXERR(Debug::LYXVC, "Diff detected:\n" << res);
 809                 docstring const file = from_utf8(owner_->filePath());
 810                 docstring text = bformat(_("There were detected changes "
 811                                 "in the working directory:\n%1$s\n\n"
 812                                 "In case of file conflict version of the local directory files "
 813                                 "will be preferred."
 814                                 "\n\nContinue?"), file);
 815                 int ret = frontend::Alert::prompt(_("Changes detected"),
 816                                 text, 0, 1, _("&Yes"), _("&No"), _("View &Log ..."));
 817                 if (ret == 2 ) {
 818                         dispatch(FuncRequest(LFUN_DIALOG_SHOW, "file " + tmpf.absFileName()));
 819                         ret = frontend::Alert::prompt(_("Changes detected"),
 820                                 text, 0, 1, _("&Yes"), _("&No"));
 821                         hideDialogs("file", 0);
 822                 }
 823                 if (ret == 1 ) {
 824                         tmpf.erase();
 825                         return string();
 826                 }
 827         }
 828
 829         // Reverting looks too harsh, see bug #6255.
 830         // doVCCommand("svn revert -R " + quoteName(owner_->filePath())
 831         // + " > " + quoteName(tmpf.toFilesystemEncoding()),
 832         // FileName(owner_->filePath()));
 833         // res = "Revert log:\n" + tmpf.fileContents("UTF-8");
 834         doVCCommand("svn update --accept mine-full " + quoteName(owner_->filePath())
 835                 + " > " + quoteName(tmpf.toFilesystemEncoding()),
 836         FileName(owner_->filePath()));
 837         res += "Update log:\n" + tmpf.fileContents("UTF-8");
 838
 839         LYXERR(Debug::LYXVC, res);
 840         tmpf.erase();
 841         return to_utf8(res);
 842 }
 843
 844
 845 bool SVN::repoUpdateEnabled()
 846 {
 847         return true;
 848 }
 849
 850
 851 string SVN::lockingToggle()
 852 {
 853         FileName tmpf = FileName::tempName("lyxvcout");
 854         if (tmpf.empty()) {
 855                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 856                 return N_("Error: Could not generate logfile.");
 857         }
 858
 859         int ret = doVCCommand("svn proplist " + quoteName(onlyFileName(owner_->absFileName()))
 860                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 861                     FileName(owner_->filePath()));
 862         if (ret)
 863                 return string();
 864
 865         string log;
 866         string res = scanLogFile(tmpf, log);
 867         bool locking = contains(res, "svn:needs-lock");
 868         if (!locking)
 869                 ret = doVCCommand("svn propset svn:needs-lock ON "
 870                     + quoteName(onlyFileName(owner_->absFileName()))
 871                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 872                     FileName(owner_->filePath()));
 873         else
 874                 ret = doVCCommand("svn propdel svn:needs-lock "
 875                     + quoteName(onlyFileName(owner_->absFileName()))
 876                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 877                     FileName(owner_->filePath()));
 878         if (ret)
 879                 return string();
 880
 881         tmpf.erase();
 882         frontend::Alert::warning(_("VCN File Locking"),
 883                 (locking ? _("Locking property unset.") : _("Locking property set.")) + "\n"
 884                 + _("Do not forget to commit the locking property into the repository."),
 885                 true);
 886
 887         return string("SVN: ") +  N_("Locking property set.");
 888 }
 889
 890
 891 bool SVN::lockingToggleEnabled()
 892 {
 893         return true;
 894 }
 895
 896
 897 void SVN::revert()
 898 {
 899         // Reverts to the version in CVS repository and
 900         // gets the updated version from the repository.
 901         string const fil = quoteName(onlyFileName(owner_->absFileName()));
 902
 903         doVCCommand("svn revert -q " + fil,
 904                     FileName(owner_->filePath()));
 905         owner_->markClean();
 906 }
 907
 908
 909 void SVN::undoLast()
 910 {
 911         // merge the current with the previous version
 912         // in a reverse patch kind of way, so that the
 913         // result is to revert the last changes.
 914         lyxerr << "Sorry, not implemented." << endl;
 915 }
 916
 917
 918 bool SVN::undoLastEnabled()
 919 {
 920         return false;
 921 }
 922
 923
 924 string SVN::revisionInfo(LyXVC::RevisionInfo const info)
 925 {
 926         if (info == LyXVC::Tree) {
 927                         if (rev_tree_cache_.empty())
 928                                 if (!getTreeRevisionInfo())
 929                                         rev_tree_cache_ = "?";
 930                         if (rev_tree_cache_ == "?")
 931                                 return string();
 932
 933                         return rev_tree_cache_;
 934         }
 935
 936         // fill the rest of the attributes for a single file
 937         if (rev_file_cache_.empty())
 938                 if (!getFileRevisionInfo())
 939                         rev_file_cache_ = "?";
 940
 941         switch (info) {
 942                 case LyXVC::File:
 943                         if (rev_file_cache_ == "?")
 944                                 return string();
 945                         return rev_file_cache_;
 946                 case LyXVC::Author:
 947                         return rev_author_cache_;
 948                 case LyXVC::Date:
 949                         return rev_date_cache_;
 950                 case LyXVC::Time:
 951                         return rev_time_cache_;
 952                 default: ;
 953
 954         }
 955
 956         return string();
 957 }
 958
 959
 960 bool SVN::getFileRevisionInfo()
 961 {
 962         FileName tmpf = FileName::tempName("lyxvcout");
 963         if (tmpf.empty()) {
 964                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
 965                 return N_("Error: Could not generate logfile.");
 966         }
 967
 968         doVCCommand("svn info --xml " + quoteName(onlyFileName(owner_->absFileName()))
 969                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
 970                     FileName(owner_->filePath()));
 971
 972         if (tmpf.empty())
 973                 return false;
 974
 975         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
 976         string line;
 977         // commit log part
 978         bool c = false;
 979         string rev;
 980
 981         while (ifs) {
 982                 getline(ifs, line);
 983                 LYXERR(Debug::LYXVC, line);
 984                 if (prefixIs(line, "<commit"))
 985                         c = true;
 986                 if (c && prefixIs(line, "   revision=\"") && suffixIs(line, "\">")) {
 987                         string l1 = subst(line, "revision=\"", "");
 988                         string l2 = trim(subst(l1, "\">", ""));
 989                         if (isStrInt(l2))
 990                                 rev_file_cache_ = rev = l2;
 991                 }
 992                 if (c && prefixIs(line, "<author>") && suffixIs(line, "</author>")) {
 993                         string l1 = subst(line, "<author>", "");
 994                         string l2 = subst(l1, "</author>", "");
 995                         rev_author_cache_ = l2;
 996                 }
 997                 if (c && prefixIs(line, "<date>") && suffixIs(line, "</date>")) {
 998                         string l1 = subst(line, "<date>", "");
 999                         string l2 = subst(l1, "</date>", "");
1000                         l2 = split(l2, l1, 'T');
1001                         rev_date_cache_ = l1;
1002                         l2 = split(l2, l1, '.');
1003                         rev_time_cache_ = l1;
1004                 }
1005         }
1006
1007         ifs.close();
1008         tmpf.erase();
1009         return !rev.empty();
1010 }
1011
1012
1013 bool SVN::getTreeRevisionInfo()
1014 {
1015         FileName tmpf = FileName::tempName("lyxvcout");
1016         if (tmpf.empty()) {
1017                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1018                 return N_("Error: Could not generate logfile.");
1019         }
1020
1021         doVCCommand("svnversion -n . > " + quoteName(tmpf.toFilesystemEncoding()),
1022                     FileName(owner_->filePath()));
1023
1024         if (tmpf.empty())
1025                 return false;
1026
1027         // only first line in case something bad happens.
1028         ifstream ifs(tmpf.toFilesystemEncoding().c_str());
1029         string line;
1030         getline(ifs, line);
1031         ifs.close();
1032         tmpf.erase();
1033
1034         rev_tree_cache_ = line;
1035         return !line.empty();
1036 }
1037
1038
1039 void SVN::getLog(FileName const & tmpf)
1040 {
1041         doVCCommand("svn log " + quoteName(onlyFileName(owner_->absFileName()))
1042                     + " > " + quoteName(tmpf.toFilesystemEncoding()),
1043                     FileName(owner_->filePath()));
1044 }
1045
1046
1047 bool SVN::prepareFileRevision(string const & revis, string & f)
1048 {
1049         if (!isStrInt(revis))
1050                 return false;
1051
1052         int rev = convert<int>(revis);
1053         if (rev <= 0)
1054                 if (!getFileRevisionInfo())
1055                         return false;
1056         if (rev == 0)
1057                 rev = convert<int>(rev_file_cache_);
1058         // go back for minus rev
1059         else if (rev < 0) {
1060                 rev = rev + convert<int>(rev_file_cache_);
1061                 if (rev < 1)
1062                         return false;
1063         }
1064
1065         string revname = convert<string>(rev);
1066         FileName tmpf = FileName::tempName("lyxvcrev_" + revname + "_");
1067         if (tmpf.empty()) {
1068                 LYXERR(Debug::LYXVC, "Could not generate logfile " << tmpf);
1069                 return N_("Error: Could not generate logfile.");
1070         }
1071
1072         doVCCommand("svn cat -r " + revname + " "
1073                       + quoteName(onlyFileName(owner_->absFileName()))
1074                       + " > " + quoteName(tmpf.toFilesystemEncoding()),
1075                 FileName(owner_->filePath()));
1076         if (tmpf.isFileEmpty())
1077                 return false;
1078
1079         f = tmpf.absFileName();
1080         return true;
1081 }
1082
1083
1084 bool SVN::prepareFileRevisionEnabled()
1085 {
1086         return true;
1087 }
1088
1089
1090
1091 bool SVN::toggleReadOnlyEnabled()
1092 {
1093         return false;
1094 }
1095
1096
1097 } // namespace lyx