src/svn.cpp

   1 /*
   2  *  Copyright (C) 2007  Thiago Macieira <thiago@kde.org>
   3  *
   4  *  This program is free software: you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation, either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 /*
  19  * Based on svn-fast-export by Chris Lee <clee@kde.org>
  20  * License: MIT <http://www.opensource.org/licenses/mit-license.php>
  21  * URL: git://repo.or.cz/fast-import.git http://repo.or.cz/w/fast-export.git
  22  */
  23
  24 #define _XOPEN_SOURCE
  25 #define _LARGEFILE_SUPPORT
  26 #define _LARGEFILE64_SUPPORT
  27
  28 #include "svn.h"
  29
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <stdio.h>
  33 #include <time.h>
  34 #include <unistd.h>
  35
  36 #include <apr_lib.h>
  37 #include <apr_getopt.h>
  38 #include <apr_general.h>
  39
  40 #include <svn_fs.h>
  41 #include <svn_pools.h>
  42 #include <svn_repos.h>
  43 #include <svn_types.h>
  44
  45 #include <QFile>
  46 #include <QDebug>
  47
  48 #include "repository.h"
  49
  50 #undef SVN_ERR
  51 #define SVN_ERR(expr) SVN_INT_ERR(expr)
  52
  53 typedef QList<Rules::Match> MatchRuleList;
  54 typedef QHash<QString, Repository *> RepositoryHash;
  55 typedef QHash<QByteArray, QByteArray> IdentityHash;
  56
  57 class AprAutoPool
  58 {
  59     apr_pool_t *pool;
  60     AprAutoPool(const AprAutoPool &);
  61     AprAutoPool &operator=(const AprAutoPool &);
  62 public:
  63     inline AprAutoPool(apr_pool_t *parent = NULL)
  64         { pool = svn_pool_create(parent); }
  65     inline ~AprAutoPool()
  66         { svn_pool_destroy(pool); }
  67
  68     inline void clear() { svn_pool_clear(pool); }
  69     inline apr_pool_t *data() const { return pool; }
  70     inline operator apr_pool_t *() const { return pool; }
  71 };
  72
  73 class SvnPrivate
  74 {
  75 public:
  76     MatchRuleList matchRules;
  77     RepositoryHash repositories;
  78     IdentityHash identities;
  79
  80     SvnPrivate(const QString &pathToRepository);
  81     ~SvnPrivate();
  82     int youngestRevision();
  83     int exportRevision(int revnum);
  84
  85     int openRepository(const QString &pathToRepository);
  86
  87 private:
  88     AprAutoPool global_pool;
  89     svn_fs_t *fs;
  90     svn_revnum_t youngest_rev;
  91 };
  92
  93 void Svn::initialize()
  94 {
  95     // initialize APR or exit
  96     if (apr_initialize() != APR_SUCCESS) {
  97         fprintf(stderr, "You lose at apr_initialize().\n");
  98         exit(1);
  99     }
 100
 101     // static destructor
 102     static struct Destructor { ~Destructor() { apr_terminate(); } } destructor;
 103 }
 104
 105 Svn::Svn(const QString &pathToRepository)
 106     : d(new SvnPrivate(pathToRepository))
 107 {
 108 }
 109
 110 Svn::~Svn()
 111 {
 112     delete d;
 113 }
 114
 115 void Svn::setMatchRules(const MatchRuleList &matchRules)
 116 {
 117     d->matchRules = matchRules;
 118 }
 119
 120 void Svn::setRepositories(const RepositoryHash &repositories)
 121 {
 122     d->repositories = repositories;
 123 }
 124
 125 int Svn::youngestRevision()
 126 {
 127     return d->youngestRevision();
 128 }
 129
 130 bool Svn::exportRevision(int revnum)
 131 {
 132     return d->exportRevision(revnum) == EXIT_SUCCESS;
 133 }
 134
 135 SvnPrivate::SvnPrivate(const QString &pathToRepository)
 136     : global_pool(NULL)
 137 {
 138     openRepository(pathToRepository);
 139
 140     // get the youngest revision
 141     svn_fs_youngest_rev(&youngest_rev, fs, global_pool);
 142 }
 143
 144 SvnPrivate::~SvnPrivate()
 145 {
 146     svn_pool_destroy(global_pool);
 147 }
 148
 149 int SvnPrivate::youngestRevision()
 150 {
 151     return youngest_rev;
 152 }
 153
 154 int SvnPrivate::openRepository(const QString &pathToRepository)
 155 {
 156     svn_repos_t *repos;
 157     SVN_ERR(svn_repos_open(&repos, QFile::encodeName(pathToRepository), global_pool));
 158     fs = svn_repos_fs(repos);
 159
 160     return EXIT_SUCCESS;
 161 }
 162
 163 enum RuleType { AnyRule = 0, NoIgnoreRule = 0x01, NoRecurseRule = 0x02 };
 164
 165 static MatchRuleList::ConstIterator
 166 findMatchRule(const MatchRuleList &matchRules, int revnum, const QString &current,
 167               int ruleMask = AnyRule)
 168 {
 169     MatchRuleList::ConstIterator it = matchRules.constBegin(),
 170                                 end = matchRules.constEnd();
 171     for ( ; it != end; ++it) {
 172         if (it->minRevision > revnum)
 173             continue;
 174         if (it->maxRevision != -1 && it->maxRevision < revnum)
 175             continue;
 176         if (it->action == Rules::Match::Ignore && ruleMask & NoIgnoreRule)
 177             continue;
 178         if (it->action == Rules::Match::Recurse && ruleMask & NoRecurseRule)
 179             continue;
 180         if (it->rx.indexIn(current) == 0)
 181             return it;
 182     }
 183
 184     // no match
 185     return end;
 186 }
 187
 188 static void splitPathName(const Rules::Match &rule, const QString &pathName, QString *svnprefix_p,
 189                           QString *repository_p, QString *branch_p, QString *path_p)
 190 {
 191     QString svnprefix = pathName;
 192     svnprefix.truncate(rule.rx.matchedLength());
 193     if (svnprefix_p)
 194         *svnprefix_p = svnprefix;
 195
 196     if (repository_p) {
 197         *repository_p = svnprefix;
 198         repository_p->replace(rule.rx, rule.repository);
 199     }
 200
 201     if (branch_p) {
 202         *branch_p = svnprefix;
 203         branch_p->replace(rule.rx, rule.branch);
 204     }
 205
 206     if (path_p)
 207         *path_p = pathName.mid(svnprefix.length());
 208 }
 209
 210 static int pathMode(svn_fs_root_t *fs_root, const char *pathname, apr_pool_t *pool)
 211 {
 212     svn_string_t *propvalue;
 213     SVN_ERR(svn_fs_node_prop(&propvalue, fs_root, pathname, "svn:executable", pool));
 214     int mode = 0100644;
 215     if (propvalue)
 216         mode = 0100755;
 217
 218     // maybe it's a symlink?
 219     SVN_ERR(svn_fs_node_prop(&propvalue, fs_root, pathname, "svn:special", pool));
 220     if (propvalue && strcmp(propvalue->data, "symlink") == 0)
 221         mode = 0120000;
 222
 223     return mode;
 224 }
 225
 226 svn_error_t *QIODevice_write(void *baton, const char *data, apr_size_t *len)
 227 {
 228     QIODevice *device = reinterpret_cast<QIODevice *>(baton);
 229     device->write(data, *len);
 230
 231     if (device->bytesToWrite() > 16384)
 232         device->waitForBytesWritten(0);
 233     return SVN_NO_ERROR;
 234 }
 235
 236 static svn_stream_t *streamForDevice(QIODevice *device, apr_pool_t *pool)
 237 {
 238     svn_stream_t *stream = svn_stream_create(device, pool);
 239     svn_stream_set_write(stream, QIODevice_write);
 240
 241     return stream;
 242 }
 243
 244 static int dumpBlob(Repository::Transaction *txn, svn_fs_root_t *fs_root,
 245                     const char *pathname, const QString &finalPathName, apr_pool_t *pool)
 246 {
 247     AprAutoPool dumppool(pool);
 248     // what type is it?
 249     int mode = pathMode(fs_root, pathname, dumppool);
 250
 251     svn_filesize_t stream_length;
 252
 253     SVN_ERR(svn_fs_file_length(&stream_length, fs_root, pathname, dumppool));
 254     QIODevice *io = txn->addFile(finalPathName, mode, stream_length);
 255
 256 #ifndef DRY_RUN
 257     // open the file
 258     svn_stream_t *in_stream, *out_stream;
 259     SVN_ERR(svn_fs_file_contents(&in_stream, fs_root, pathname, dumppool));
 260
 261     // open a generic svn_stream_t for the QIODevice
 262     out_stream = streamForDevice(io, dumppool);
 263     SVN_ERR(svn_stream_copy(in_stream, out_stream, dumppool));
 264
 265     // print an ending newline
 266     io->putChar('\n');
 267 #endif
 268
 269     return EXIT_SUCCESS;
 270 }
 271
 272 static int recursiveDumpDir(Repository::Transaction *txn, svn_fs_root_t *fs_root,
 273                             const QByteArray &pathname, const QString &finalPathName,
 274                             apr_pool_t *pool)
 275 {
 276     // get the dir listing
 277     apr_hash_t *entries;
 278     SVN_ERR(svn_fs_dir_entries(&entries, fs_root, pathname, pool));
 279     AprAutoPool dirpool(pool);
 280
 281     for (apr_hash_index_t *i = apr_hash_first(pool, entries); i; i = apr_hash_next(i)) {
 282         dirpool.clear();
 283         const void *vkey;
 284         void *value;
 285         apr_hash_this(i, &vkey, NULL, &value);
 286
 287         svn_fs_dirent_t *dirent = reinterpret_cast<svn_fs_dirent_t *>(value);
 288         QByteArray entryName = pathname + '/' + dirent->name;
 289         QString entryFinalName = finalPathName + dirent->name;
 290
 291         if (dirent->kind == svn_node_dir) {
 292             entryFinalName += '/';
 293             if (recursiveDumpDir(txn, fs_root, entryName, entryFinalName, dirpool) == EXIT_FAILURE)
 294                 return EXIT_FAILURE;
 295         } else if (dirent->kind == svn_node_file) {
 296             printf("+");
 297             fflush(stdout);
 298             if (dumpBlob(txn, fs_root, entryName, entryFinalName, dirpool) == EXIT_FAILURE)
 299                 return EXIT_FAILURE;
 300         }
 301     }
 302
 303     return EXIT_SUCCESS;
 304 }
 305
 306 static bool wasDir(svn_fs_t *fs, int revnum, const char *pathname, apr_pool_t *pool)
 307 {
 308     AprAutoPool subpool(pool);
 309     svn_fs_root_t *fs_root;
 310     if (svn_fs_revision_root(&fs_root, fs, revnum, subpool) != SVN_NO_ERROR)
 311         return false;
 312
 313     svn_boolean_t is_dir;
 314     if (svn_fs_is_dir(&is_dir, fs_root, pathname, subpool) != SVN_NO_ERROR)
 315         return false;
 316
 317     return is_dir;
 318 }
 319
 320 time_t get_epoch(char *svn_date)
 321 {
 322     struct tm tm;
 323     memset(&tm, 0, sizeof tm);
 324     QByteArray date(svn_date, strlen(svn_date) - 8);
 325     strptime(date, "%Y-%m-%dT%H:%M:%S", &tm);
 326     return mktime(&tm);
 327 }
 328
 329 class SvnRevision
 330 {
 331 public:
 332     AprAutoPool pool;
 333     QHash<QString, Repository::Transaction *> transactions;
 334     MatchRuleList matchRules;
 335     RepositoryHash repositories;
 336     IdentityHash identities;
 337
 338     svn_fs_t *fs;
 339     svn_fs_root_t *fs_root;
 340     int revnum;
 341
 342     SvnRevision(int revision, svn_fs_t *f, apr_pool_t *parent_pool)
 343         : pool(parent_pool), fs(f), fs_root(0), revnum(revision)
 344     {
 345     }
 346
 347     int open()
 348     {
 349         SVN_ERR(svn_fs_revision_root(&fs_root, fs, revnum, pool));
 350         return EXIT_SUCCESS;
 351     }
 352
 353     int prepareTransactions();
 354     int commit();
 355
 356     int exportEntry(const char *path, const svn_fs_path_change_t *change, apr_hash_t *changes);
 357     int exportDispatch(const char *path, const svn_fs_path_change_t *change,
 358                        const char *path_from, svn_revnum_t rev_from,
 359                        apr_hash_t *changes, const QString &current, const Rules::Match &rule,
 360                        apr_pool_t *pool);
 361     int exportInternal(const char *path, const svn_fs_path_change_t *change,
 362                        const char *path_from, svn_revnum_t rev_from,
 363                        const QString &current, const Rules::Match &rule);
 364     int recurse(const char *path, const svn_fs_path_change_t *change,
 365                 const char *path_from, svn_revnum_t rev_from,
 366                 apr_hash_t *changes, apr_pool_t *pool);
 367 };
 368
 369 int SvnPrivate::exportRevision(int revnum)
 370 {
 371     SvnRevision rev(revnum, fs, global_pool);
 372     rev.matchRules = matchRules;
 373     rev.repositories = repositories;
 374     rev.identities = identities;
 375
 376     // open this revision:
 377     printf("Exporting revision %d ", revnum);
 378     fflush(stdout);
 379
 380     if (rev.open() == EXIT_FAILURE)
 381         return EXIT_FAILURE;
 382
 383     if (rev.prepareTransactions() == EXIT_FAILURE)
 384         return EXIT_FAILURE;
 385
 386     if (rev.transactions.isEmpty()) {
 387         printf(" nothing to do\n");
 388         return EXIT_SUCCESS;    // no changes?
 389     }
 390
 391     if (rev.commit() == EXIT_FAILURE)
 392         return EXIT_FAILURE;
 393
 394     printf(" done\n");
 395     return EXIT_SUCCESS;
 396 }
 397
 398 int SvnRevision::prepareTransactions()
 399 {
 400     // find out what was changed in this revision:
 401     apr_hash_t *changes;
 402     SVN_ERR(svn_fs_paths_changed(&changes, fs_root, pool));
 403     for (apr_hash_index_t *i = apr_hash_first(pool, changes); i; i = apr_hash_next(i)) {
 404         const void *vkey;
 405         void *value;
 406         apr_hash_this(i, &vkey, NULL, &value);
 407         const char *key = reinterpret_cast<const char *>(vkey);
 408         svn_fs_path_change_t *change = reinterpret_cast<svn_fs_path_change_t *>(value);
 409
 410         if (exportEntry(key, change, changes) == EXIT_FAILURE)
 411             return EXIT_FAILURE;
 412     }
 413
 414     return EXIT_SUCCESS;
 415 }
 416
 417 int SvnRevision::commit()
 418 {
 419     // now create the commit
 420     apr_hash_t *revprops;
 421     SVN_ERR(svn_fs_revision_proplist(&revprops, fs, revnum, pool));
 422     svn_string_t *svnauthor = (svn_string_t*)apr_hash_get(revprops, "svn:author", APR_HASH_KEY_STRING);
 423     svn_string_t *svndate = (svn_string_t*)apr_hash_get(revprops, "svn:date", APR_HASH_KEY_STRING);
 424     svn_string_t *svnlog = (svn_string_t*)apr_hash_get(revprops, "svn:log", APR_HASH_KEY_STRING);
 425
 426     QByteArray log = (char *)svnlog->data;
 427     QByteArray authorident = svnauthor ? identities.value((char *)svnauthor->data) : QByteArray();
 428     time_t epoch = get_epoch((char*)svndate->data);
 429     if (authorident.isEmpty()) {
 430         if (!svnauthor || svn_string_isempty(svnauthor))
 431             authorident = "nobody <nobody@localhost>";
 432         else
 433             authorident = svnauthor->data + QByteArray(" <") +
 434                           svnauthor->data + QByteArray("@localhost>");
 435     }
 436
 437     foreach (Repository::Transaction *txn, transactions) {
 438         txn->setAuthor(authorident);
 439         txn->setDateTime(epoch);
 440         txn->setLog(log);
 441
 442         txn->commit();
 443         delete txn;
 444     }
 445
 446     return EXIT_SUCCESS;
 447 }
 448
 449 int SvnRevision::exportEntry(const char *key, const svn_fs_path_change_t *change,
 450                              apr_hash_t *changes)
 451 {
 452     AprAutoPool revpool(pool.data());
 453     QString current = QString::fromUtf8(key);
 454
 455     // was this copied from somewhere?
 456     svn_revnum_t rev_from;
 457     const char *path_from;
 458     SVN_ERR(svn_fs_copied_from(&rev_from, &path_from, fs_root, key, revpool));
 459
 460     // is this a directory?
 461     svn_boolean_t is_dir;
 462     SVN_ERR(svn_fs_is_dir(&is_dir, fs_root, key, revpool));
 463     if (is_dir) {
 464         if (path_from == NULL) {
 465             // no, it's a new directory being added
 466             // Git doesn't handle directories, so we don't either
 467             //qDebug() << "   mkdir ignored:" << key;
 468             return EXIT_SUCCESS;
 469         }
 470
 471         current += '/';
 472         qDebug() << "   " << key << "was copied from" << path_from;
 473     }
 474
 475     // find the first rule that matches this pathname
 476     MatchRuleList::ConstIterator match = findMatchRule(matchRules, revnum, current);
 477     if (match != matchRules.constEnd()) {
 478         const Rules::Match &rule = *match;
 479         return exportDispatch(key, change, path_from, rev_from, changes, current, rule, revpool);
 480     }
 481
 482     if (is_dir && path_from != NULL) {
 483         qDebug() << current << "is a copy-with-history, auto-recursing";
 484         return recurse(key, change, path_from, rev_from, changes, revpool);
 485     } else if (wasDir(fs, revnum - 1, key, revpool)) {
 486         qDebug() << current << "was a directory; ignoring";
 487     } else if (change->change_kind == svn_fs_path_change_delete) {
 488         qDebug() << current << "is being deleted but I don't know anything about it; ignoring";
 489     } else {
 490         qCritical() << current << "did not match any rules; cannot continue";
 491         return EXIT_FAILURE;
 492     }
 493
 494     return EXIT_SUCCESS;
 495 }
 496
 497 int SvnRevision::exportDispatch(const char *key, const svn_fs_path_change_t *change,
 498                                 const char *path_from, svn_revnum_t rev_from,
 499                                 apr_hash_t *changes, const QString &current,
 500                                 const Rules::Match &rule, apr_pool_t *pool)
 501 {
 502     switch (rule.action) {
 503     case Rules::Match::Ignore:
 504         // ignore rule
 505         qDebug() << "   " << qPrintable(current) << "rev" << revnum
 506                  << "-> ignored (rule" << rule << ")";
 507         return EXIT_SUCCESS;
 508
 509     case Rules::Match::Recurse:
 510         return recurse(key, change, path_from, rev_from, changes, pool);
 511
 512     case Rules::Match::Export:
 513         return exportInternal(key, change, path_from, rev_from, current, rule);
 514     }
 515 }
 516
 517 int SvnRevision::exportInternal(const char *key, const svn_fs_path_change_t *change,
 518                                 const char *path_from, svn_revnum_t rev_from,
 519                                 const QString &current, const Rules::Match &rule)
 520 {
 521     QString svnprefix, repository, branch, path;
 522     splitPathName(rule, current, &svnprefix, &repository, &branch, &path);
 523
 524     printf(".");
 525     fflush(stdout);
 526 //                qDebug() << "   " << qPrintable(current) << "rev" << revnum << "->"
 527 //                         << qPrintable(repository) << qPrintable(branch) << qPrintable(path);
 528
 529     if (path.isEmpty() && path_from != NULL) {
 530         QString previous = QString::fromUtf8(path_from) + '/';
 531         MatchRuleList::ConstIterator prevmatch =
 532             findMatchRule(matchRules, rev_from, previous, NoIgnoreRule);
 533         if (prevmatch != matchRules.constEnd()) {
 534             QString prevsvnprefix, prevrepository, prevbranch, prevpath;
 535             splitPathName(*prevmatch, previous, &prevsvnprefix, &prevrepository,
 536                           &prevbranch, &prevpath);
 537
 538             if (!prevpath.isEmpty()) {
 539                 qDebug() << qPrintable(current) << "is a partial branch of repository"
 540                          << qPrintable(prevrepository) << "branch"
 541                          << qPrintable(prevbranch) << "subdir"
 542                          << qPrintable(prevpath);
 543             } else if (prevrepository != repository) {
 544                 qWarning() << qPrintable(current) << "rev" << revnum
 545                            << "is a cross-repository copy (from repository"
 546                            << qPrintable(prevrepository) << "branch"
 547                            << qPrintable(prevbranch) << "path"
 548                            << qPrintable(prevpath) << "rev" << rev_from << ")";
 549             } else if (prevbranch == branch) {
 550                 // same branch and same repository
 551                 qDebug() << qPrintable(current) << "rev" << revnum
 552                          << "is an SVN rename from"
 553                          << qPrintable(previous) << "rev" << rev_from;
 554                 return EXIT_SUCCESS;
 555             } else {
 556                 // same repository but not same branch
 557                 // this means this is a plain branch
 558                 qDebug() << qPrintable(repository) << ": branch"
 559                          << qPrintable(branch) << "is branching from"
 560                          << qPrintable(prevbranch);
 561
 562                 Repository *repo = repositories.value(repository, 0);
 563                 if (!repo) {
 564                     qCritical() << "Rule" << rule
 565                                 << "references unknown repository" << repository;
 566                     return EXIT_FAILURE;
 567                 }
 568
 569                 repo->createBranch(branch, revnum, prevbranch, rev_from);
 570                 return EXIT_SUCCESS;
 571             }
 572         }
 573     }
 574
 575     Repository::Transaction *txn = transactions.value(repository + branch, 0);
 576     if (!txn) {
 577         Repository *repo = repositories.value(repository, 0);
 578         if (!repo) {
 579             qCritical() << "Rule" << rule
 580                         << "references unknown repository" << repository;
 581             return EXIT_FAILURE;
 582         }
 583
 584         txn = repo->newTransaction(branch, svnprefix, revnum);
 585         if (!txn)
 586             return EXIT_FAILURE;
 587
 588         transactions.insert(repository + branch, txn);
 589     }
 590
 591     if (change->change_kind == svn_fs_path_change_delete) {
 592         txn->deleteFile(path);
 593     } else if (!current.endsWith('/')) {
 594         dumpBlob(txn, fs_root, key, path, pool);
 595     } else {
 596         QString pathNoSlash = path;
 597         pathNoSlash.chop(1);
 598         txn->deleteFile(pathNoSlash);
 599         recursiveDumpDir(txn, fs_root, key, path, pool);
 600     }
 601
 602     return EXIT_SUCCESS;
 603 }
 604
 605 int SvnRevision::recurse(const char *path, const svn_fs_path_change_t *change,
 606                          const char *path_from, svn_revnum_t rev_from,
 607                          apr_hash_t *changes, apr_pool_t *pool)
 608 {
 609     // get the dir listing
 610     apr_hash_t *entries;
 611     SVN_ERR(svn_fs_dir_entries(&entries, fs_root, path, pool));
 612
 613     AprAutoPool dirpool(pool);
 614     for (apr_hash_index_t *i = apr_hash_first(pool, entries); i; i = apr_hash_next(i)) {
 615         dirpool.clear();
 616         const void *vkey;
 617         void *value;
 618         apr_hash_this(i, &vkey, NULL, &value);
 619
 620         svn_fs_dirent_t *dirent = reinterpret_cast<svn_fs_dirent_t *>(value);
 621         QByteArray entry = path + QByteArray("/") + dirent->name;
 622         QByteArray entryFrom;
 623         if (path_from)
 624             entryFrom = path_from + QByteArray("/") + dirent->name;
 625
 626         // check if this entry is in the changelist for this revision already
 627         if (apr_hash_get(changes, entry.constData(), APR_HASH_KEY_STRING)) {
 628             qDebug() << entry << "rev" << revnum
 629                      << "is in the change-list, deferring to that one";
 630             continue;
 631         }
 632
 633         QString current = QString::fromUtf8(entry);
 634         if (dirent->kind == svn_node_dir)
 635             current += '/';
 636
 637         // find the first rule that matches this pathname
 638         MatchRuleList::ConstIterator match = findMatchRule(matchRules, revnum, current);
 639         if (match != matchRules.constEnd()) {
 640             if (exportDispatch(entry, change, entryFrom.isNull() ? 0 : entryFrom.constData(),
 641                                rev_from, changes, current, *match, dirpool) == EXIT_FAILURE)
 642                 return EXIT_FAILURE;
 643         } else {
 644             qCritical() << current << "rev" << revnum
 645                         << "did not match any rules; cannot continue";
 646             return EXIT_FAILURE;
 647         }
 648     }
 649
 650     return EXIT_SUCCESS;
 651 }