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 void Svn::setIdentityMap(const IdentityHash &identityMap)
 126 {
 127     d->identities = identityMap;
 128 }
 129
 130 int Svn::youngestRevision()
 131 {
 132     return d->youngestRevision();
 133 }
 134
 135 bool Svn::exportRevision(int revnum)
 136 {
 137     return d->exportRevision(revnum) == EXIT_SUCCESS;
 138 }
 139
 140 SvnPrivate::SvnPrivate(const QString &pathToRepository)
 141     : global_pool(NULL)
 142 {
 143     openRepository(pathToRepository);
 144
 145     // get the youngest revision
 146     svn_fs_youngest_rev(&youngest_rev, fs, global_pool);
 147 }
 148
 149 SvnPrivate::~SvnPrivate()
 150 {
 151     svn_pool_destroy(global_pool);
 152 }
 153
 154 int SvnPrivate::youngestRevision()
 155 {
 156     return youngest_rev;
 157 }
 158
 159 int SvnPrivate::openRepository(const QString &pathToRepository)
 160 {
 161     svn_repos_t *repos;
 162     SVN_ERR(svn_repos_open(&repos, QFile::encodeName(pathToRepository), global_pool));
 163     fs = svn_repos_fs(repos);
 164
 165     return EXIT_SUCCESS;
 166 }
 167
 168 enum RuleType { AnyRule = 0, NoIgnoreRule = 0x01, NoRecurseRule = 0x02 };
 169
 170 static MatchRuleList::ConstIterator
 171 findMatchRule(const MatchRuleList &matchRules, int revnum, const QString &current,
 172               int ruleMask = AnyRule)
 173 {
 174     MatchRuleList::ConstIterator it = matchRules.constBegin(),
 175                                 end = matchRules.constEnd();
 176     for ( ; it != end; ++it) {
 177         if (it->minRevision > revnum)
 178             continue;
 179         if (it->maxRevision != -1 && it->maxRevision < revnum)
 180             continue;
 181         if (it->action == Rules::Match::Ignore && ruleMask & NoIgnoreRule)
 182             continue;
 183         if (it->action == Rules::Match::Recurse && ruleMask & NoRecurseRule)
 184             continue;
 185         if (it->rx.indexIn(current) == 0)
 186             return it;
 187     }
 188
 189     // no match
 190     return end;
 191 }
 192
 193 static void splitPathName(const Rules::Match &rule, const QString &pathName, QString *svnprefix_p,
 194                           QString *repository_p, QString *branch_p, QString *path_p)
 195 {
 196     QString svnprefix = pathName;
 197     svnprefix.truncate(rule.rx.matchedLength());
 198     if (svnprefix_p)
 199         *svnprefix_p = svnprefix;
 200
 201     if (repository_p) {
 202         *repository_p = svnprefix;
 203         repository_p->replace(rule.rx, rule.repository);
 204     }
 205
 206     if (branch_p) {
 207         *branch_p = svnprefix;
 208         branch_p->replace(rule.rx, rule.branch);
 209     }
 210
 211     if (path_p)
 212         *path_p = pathName.mid(svnprefix.length());
 213 }
 214
 215 static int pathMode(svn_fs_root_t *fs_root, const char *pathname, apr_pool_t *pool)
 216 {
 217     svn_string_t *propvalue;
 218     SVN_ERR(svn_fs_node_prop(&propvalue, fs_root, pathname, "svn:executable", pool));
 219     int mode = 0100644;
 220     if (propvalue)
 221         mode = 0100755;
 222
 223     // maybe it's a symlink?
 224     SVN_ERR(svn_fs_node_prop(&propvalue, fs_root, pathname, "svn:special", pool));
 225     if (propvalue && strcmp(propvalue->data, "symlink") == 0)
 226         mode = 0120000;
 227
 228     return mode;
 229 }
 230
 231 svn_error_t *QIODevice_write(void *baton, const char *data, apr_size_t *len)
 232 {
 233     QIODevice *device = reinterpret_cast<QIODevice *>(baton);
 234     device->write(data, *len);
 235
 236     while (device->bytesToWrite() > 32*1024) {
 237         if (!device->waitForBytesWritten(-1)) {
 238             qFatal("Failed to write to process: %s", qPrintable(device->errorString()));
 239             return svn_error_createf(APR_EOF, SVN_NO_ERROR, "Failed to write to process: %s",
 240                                      qPrintable(device->errorString()));
 241         }
 242     }
 243     return SVN_NO_ERROR;
 244 }
 245
 246 static svn_stream_t *streamForDevice(QIODevice *device, apr_pool_t *pool)
 247 {
 248     svn_stream_t *stream = svn_stream_create(device, pool);
 249     svn_stream_set_write(stream, QIODevice_write);
 250
 251     return stream;
 252 }
 253
 254 static int dumpBlob(Repository::Transaction *txn, svn_fs_root_t *fs_root,
 255                     const char *pathname, const QString &finalPathName, apr_pool_t *pool)
 256 {
 257     AprAutoPool dumppool(pool);
 258     // what type is it?
 259     int mode = pathMode(fs_root, pathname, dumppool);
 260
 261     svn_filesize_t stream_length;
 262
 263     SVN_ERR(svn_fs_file_length(&stream_length, fs_root, pathname, dumppool));
 264     QIODevice *io = txn->addFile(finalPathName, mode, stream_length);
 265
 266 #ifndef DRY_RUN
 267     // open the file
 268     svn_stream_t *in_stream, *out_stream;
 269     SVN_ERR(svn_fs_file_contents(&in_stream, fs_root, pathname, dumppool));
 270
 271     // open a generic svn_stream_t for the QIODevice
 272     out_stream = streamForDevice(io, dumppool);
 273     SVN_ERR(svn_stream_copy(in_stream, out_stream, dumppool));
 274
 275     // print an ending newline
 276     io->putChar('\n');
 277 #endif
 278
 279     return EXIT_SUCCESS;
 280 }
 281
 282 static int recursiveDumpDir(Repository::Transaction *txn, svn_fs_root_t *fs_root,
 283                             const QByteArray &pathname, const QString &finalPathName,
 284                             apr_pool_t *pool)
 285 {
 286     // get the dir listing
 287     apr_hash_t *entries;
 288     SVN_ERR(svn_fs_dir_entries(&entries, fs_root, pathname, pool));
 289     AprAutoPool dirpool(pool);
 290
 291     for (apr_hash_index_t *i = apr_hash_first(pool, entries); i; i = apr_hash_next(i)) {
 292         dirpool.clear();
 293         const void *vkey;
 294         void *value;
 295         apr_hash_this(i, &vkey, NULL, &value);
 296
 297         svn_fs_dirent_t *dirent = reinterpret_cast<svn_fs_dirent_t *>(value);
 298         QByteArray entryName = pathname + '/' + dirent->name;
 299         QString entryFinalName = finalPathName + dirent->name;
 300
 301         if (dirent->kind == svn_node_dir) {
 302             entryFinalName += '/';
 303             if (recursiveDumpDir(txn, fs_root, entryName, entryFinalName, dirpool) == EXIT_FAILURE)
 304                 return EXIT_FAILURE;
 305         } else if (dirent->kind == svn_node_file) {
 306             printf("+");
 307             fflush(stdout);
 308             if (dumpBlob(txn, fs_root, entryName, entryFinalName, dirpool) == EXIT_FAILURE)
 309                 return EXIT_FAILURE;
 310         }
 311     }
 312
 313     return EXIT_SUCCESS;
 314 }
 315
 316 static bool wasDir(svn_fs_t *fs, int revnum, const char *pathname, apr_pool_t *pool)
 317 {
 318     AprAutoPool subpool(pool);
 319     svn_fs_root_t *fs_root;
 320     if (svn_fs_revision_root(&fs_root, fs, revnum, subpool) != SVN_NO_ERROR)
 321         return false;
 322
 323     svn_boolean_t is_dir;
 324     if (svn_fs_is_dir(&is_dir, fs_root, pathname, subpool) != SVN_NO_ERROR)
 325         return false;
 326
 327     return is_dir;
 328 }
 329
 330 time_t get_epoch(char *svn_date)
 331 {
 332     struct tm tm;
 333     memset(&tm, 0, sizeof tm);
 334     QByteArray date(svn_date, strlen(svn_date) - 8);
 335     strptime(date, "%Y-%m-%dT%H:%M:%S", &tm);
 336     return mktime(&tm);
 337 }
 338
 339 class SvnRevision
 340 {
 341 public:
 342     AprAutoPool pool;
 343     QHash<QString, Repository::Transaction *> transactions;
 344     MatchRuleList matchRules;
 345     RepositoryHash repositories;
 346     IdentityHash identities;
 347
 348     svn_fs_t *fs;
 349     svn_fs_root_t *fs_root;
 350     int revnum;
 351
 352     SvnRevision(int revision, svn_fs_t *f, apr_pool_t *parent_pool)
 353         : pool(parent_pool), fs(f), fs_root(0), revnum(revision)
 354     {
 355     }
 356
 357     int open()
 358     {
 359         SVN_ERR(svn_fs_revision_root(&fs_root, fs, revnum, pool));
 360         return EXIT_SUCCESS;
 361     }
 362
 363     int prepareTransactions();
 364     int commit();
 365
 366     int exportEntry(const char *path, const svn_fs_path_change_t *change, apr_hash_t *changes);
 367     int exportDispatch(const char *path, const svn_fs_path_change_t *change,
 368                        const char *path_from, svn_revnum_t rev_from,
 369                        apr_hash_t *changes, const QString &current, const Rules::Match &rule,
 370                        apr_pool_t *pool);
 371     int exportInternal(const char *path, const svn_fs_path_change_t *change,
 372                        const char *path_from, svn_revnum_t rev_from,
 373                        const QString &current, const Rules::Match &rule);
 374     int recurse(const char *path, const svn_fs_path_change_t *change,
 375                 const char *path_from, svn_revnum_t rev_from,
 376                 apr_hash_t *changes, apr_pool_t *pool);
 377 };
 378
 379 int SvnPrivate::exportRevision(int revnum)
 380 {
 381     SvnRevision rev(revnum, fs, global_pool);
 382     rev.matchRules = matchRules;
 383     rev.repositories = repositories;
 384     rev.identities = identities;
 385
 386     // open this revision:
 387     printf("Exporting revision %d ", revnum);
 388     fflush(stdout);
 389
 390     if (rev.open() == EXIT_FAILURE)
 391         return EXIT_FAILURE;
 392
 393     if (rev.prepareTransactions() == EXIT_FAILURE)
 394         return EXIT_FAILURE;
 395
 396     if (rev.transactions.isEmpty()) {
 397         printf(" nothing to do\n");
 398         return EXIT_SUCCESS;    // no changes?
 399     }
 400
 401     if (rev.commit() == EXIT_FAILURE)
 402         return EXIT_FAILURE;
 403
 404     printf(" done\n");
 405     return EXIT_SUCCESS;
 406 }
 407
 408 int SvnRevision::prepareTransactions()
 409 {
 410     // find out what was changed in this revision:
 411     apr_hash_t *changes;
 412     SVN_ERR(svn_fs_paths_changed(&changes, fs_root, pool));
 413     for (apr_hash_index_t *i = apr_hash_first(pool, changes); i; i = apr_hash_next(i)) {
 414         const void *vkey;
 415         void *value;
 416         apr_hash_this(i, &vkey, NULL, &value);
 417         const char *key = reinterpret_cast<const char *>(vkey);
 418         svn_fs_path_change_t *change = reinterpret_cast<svn_fs_path_change_t *>(value);
 419
 420         if (exportEntry(key, change, changes) == EXIT_FAILURE)
 421             return EXIT_FAILURE;
 422     }
 423
 424     return EXIT_SUCCESS;
 425 }
 426
 427 int SvnRevision::commit()
 428 {
 429     // now create the commit
 430     apr_hash_t *revprops;
 431     SVN_ERR(svn_fs_revision_proplist(&revprops, fs, revnum, pool));
 432     svn_string_t *svnauthor = (svn_string_t*)apr_hash_get(revprops, "svn:author", APR_HASH_KEY_STRING);
 433     svn_string_t *svndate = (svn_string_t*)apr_hash_get(revprops, "svn:date", APR_HASH_KEY_STRING);
 434     svn_string_t *svnlog = (svn_string_t*)apr_hash_get(revprops, "svn:log", APR_HASH_KEY_STRING);
 435
 436     QByteArray log = (char *)svnlog->data;
 437     QByteArray authorident = svnauthor ? identities.value((char *)svnauthor->data) : QByteArray();
 438     time_t epoch = get_epoch((char*)svndate->data);
 439     if (authorident.isEmpty()) {
 440         if (!svnauthor || svn_string_isempty(svnauthor))
 441             authorident = "nobody <nobody@localhost>";
 442         else
 443             authorident = svnauthor->data + QByteArray(" <") +
 444                           svnauthor->data + QByteArray("@localhost>");
 445     }
 446
 447     foreach (Repository::Transaction *txn, transactions) {
 448         txn->setAuthor(authorident);
 449         txn->setDateTime(epoch);
 450         txn->setLog(log);
 451
 452         txn->commit();
 453         delete txn;
 454     }
 455
 456     return EXIT_SUCCESS;
 457 }
 458
 459 int SvnRevision::exportEntry(const char *key, const svn_fs_path_change_t *change,
 460                              apr_hash_t *changes)
 461 {
 462     AprAutoPool revpool(pool.data());
 463     QString current = QString::fromUtf8(key);
 464
 465     // was this copied from somewhere?
 466     svn_revnum_t rev_from;
 467     const char *path_from;
 468     SVN_ERR(svn_fs_copied_from(&rev_from, &path_from, fs_root, key, revpool));
 469
 470     // is this a directory?
 471     svn_boolean_t is_dir;
 472     SVN_ERR(svn_fs_is_dir(&is_dir, fs_root, key, revpool));
 473     if (is_dir) {
 474         if (path_from == NULL) {
 475             // no, it's a new directory being added
 476             // Git doesn't handle directories, so we don't either
 477             //qDebug() << "   mkdir ignored:" << key;
 478             return EXIT_SUCCESS;
 479         }
 480
 481         current += '/';
 482         qDebug() << "   " << key << "was copied from" << path_from;
 483     }
 484
 485     // find the first rule that matches this pathname
 486     MatchRuleList::ConstIterator match = findMatchRule(matchRules, revnum, current);
 487     if (match != matchRules.constEnd()) {
 488         const Rules::Match &rule = *match;
 489         return exportDispatch(key, change, path_from, rev_from, changes, current, rule, revpool);
 490     }
 491
 492     if (is_dir && path_from != NULL) {
 493         qDebug() << current << "is a copy-with-history, auto-recursing";
 494         return recurse(key, change, path_from, rev_from, changes, revpool);
 495     } else if (wasDir(fs, revnum - 1, key, revpool)) {
 496         qDebug() << current << "was a directory; ignoring";
 497     } else if (change->change_kind == svn_fs_path_change_delete) {
 498         qDebug() << current << "is being deleted but I don't know anything about it; ignoring";
 499     } else {
 500         qCritical() << current << "did not match any rules; cannot continue";
 501         return EXIT_FAILURE;
 502     }
 503
 504     return EXIT_SUCCESS;
 505 }
 506
 507 int SvnRevision::exportDispatch(const char *key, const svn_fs_path_change_t *change,
 508                                 const char *path_from, svn_revnum_t rev_from,
 509                                 apr_hash_t *changes, const QString &current,
 510                                 const Rules::Match &rule, apr_pool_t *pool)
 511 {
 512     switch (rule.action) {
 513     case Rules::Match::Ignore:
 514         // ignore rule
 515         qDebug() << "   " << qPrintable(current) << "rev" << revnum
 516                  << "-> ignored (rule" << rule << ")";
 517         return EXIT_SUCCESS;
 518
 519     case Rules::Match::Recurse:
 520         return recurse(key, change, path_from, rev_from, changes, pool);
 521
 522     case Rules::Match::Export:
 523         return exportInternal(key, change, path_from, rev_from, current, rule);
 524     }
 525
 526     // never reached
 527     return EXIT_FAILURE;
 528 }
 529
 530 int SvnRevision::exportInternal(const char *key, const svn_fs_path_change_t *change,
 531                                 const char *path_from, svn_revnum_t rev_from,
 532                                 const QString &current, const Rules::Match &rule)
 533 {
 534     QString svnprefix, repository, branch, path;
 535     splitPathName(rule, current, &svnprefix, &repository, &branch, &path);
 536
 537     printf(".");
 538     fflush(stdout);
 539 //                qDebug() << "   " << qPrintable(current) << "rev" << revnum << "->"
 540 //                         << qPrintable(repository) << qPrintable(branch) << qPrintable(path);
 541
 542     if (path.isEmpty() && path_from != NULL) {
 543         QString previous = QString::fromUtf8(path_from) + '/';
 544         MatchRuleList::ConstIterator prevmatch =
 545             findMatchRule(matchRules, rev_from, previous, NoIgnoreRule);
 546         if (prevmatch != matchRules.constEnd()) {
 547             QString prevsvnprefix, prevrepository, prevbranch, prevpath;
 548             splitPathName(*prevmatch, previous, &prevsvnprefix, &prevrepository,
 549                           &prevbranch, &prevpath);
 550
 551             if (!prevpath.isEmpty()) {
 552                 qDebug() << qPrintable(current) << "is a partial branch of repository"
 553                          << qPrintable(prevrepository) << "branch"
 554                          << qPrintable(prevbranch) << "subdir"
 555                          << qPrintable(prevpath);
 556             } else if (prevrepository != repository) {
 557                 qWarning() << qPrintable(current) << "rev" << revnum
 558                            << "is a cross-repository copy (from repository"
 559                            << qPrintable(prevrepository) << "branch"
 560                            << qPrintable(prevbranch) << "path"
 561                            << qPrintable(prevpath) << "rev" << rev_from << ")";
 562             } else if (prevbranch == branch) {
 563                 // same branch and same repository
 564                 qDebug() << qPrintable(current) << "rev" << revnum
 565                          << "is an SVN rename from"
 566                          << qPrintable(previous) << "rev" << rev_from;
 567                 return EXIT_SUCCESS;
 568             } else {
 569                 // same repository but not same branch
 570                 // this means this is a plain branch
 571                 qDebug() << qPrintable(repository) << ": branch"
 572                          << qPrintable(branch) << "is branching from"
 573                          << qPrintable(prevbranch);
 574
 575                 Repository *repo = repositories.value(repository, 0);
 576                 if (!repo) {
 577                     qCritical() << "Rule" << rule
 578                                 << "references unknown repository" << repository;
 579                     return EXIT_FAILURE;
 580                 }
 581
 582                 repo->createBranch(branch, revnum, prevbranch, rev_from);
 583                 return EXIT_SUCCESS;
 584             }
 585         }
 586     }
 587
 588     Repository::Transaction *txn = transactions.value(repository + branch, 0);
 589     if (!txn) {
 590         Repository *repo = repositories.value(repository, 0);
 591         if (!repo) {
 592             qCritical() << "Rule" << rule
 593                         << "references unknown repository" << repository;
 594             return EXIT_FAILURE;
 595         }
 596
 597         txn = repo->newTransaction(branch, svnprefix, revnum);
 598         if (!txn)
 599             return EXIT_FAILURE;
 600
 601         transactions.insert(repository + branch, txn);
 602     }
 603
 604     if (change->change_kind == svn_fs_path_change_delete) {
 605         txn->deleteFile(path);
 606     } else if (!current.endsWith('/')) {
 607         dumpBlob(txn, fs_root, key, path, pool);
 608     } else {
 609         QString pathNoSlash = path;
 610         pathNoSlash.chop(1);
 611         txn->deleteFile(pathNoSlash);
 612         recursiveDumpDir(txn, fs_root, key, path, pool);
 613     }
 614
 615     return EXIT_SUCCESS;
 616 }
 617
 618 int SvnRevision::recurse(const char *path, const svn_fs_path_change_t *change,
 619                          const char *path_from, svn_revnum_t rev_from,
 620                          apr_hash_t *changes, apr_pool_t *pool)
 621 {
 622     // get the dir listing
 623     apr_hash_t *entries;
 624     SVN_ERR(svn_fs_dir_entries(&entries, fs_root, path, pool));
 625
 626     AprAutoPool dirpool(pool);
 627     for (apr_hash_index_t *i = apr_hash_first(pool, entries); i; i = apr_hash_next(i)) {
 628         dirpool.clear();
 629         const void *vkey;
 630         void *value;
 631         apr_hash_this(i, &vkey, NULL, &value);
 632
 633         svn_fs_dirent_t *dirent = reinterpret_cast<svn_fs_dirent_t *>(value);
 634         QByteArray entry = path + QByteArray("/") + dirent->name;
 635         QByteArray entryFrom;
 636         if (path_from)
 637             entryFrom = path_from + QByteArray("/") + dirent->name;
 638
 639         // check if this entry is in the changelist for this revision already
 640         if (apr_hash_get(changes, entry.constData(), APR_HASH_KEY_STRING)) {
 641             qDebug() << entry << "rev" << revnum
 642                      << "is in the change-list, deferring to that one";
 643             continue;
 644         }
 645
 646         QString current = QString::fromUtf8(entry);
 647         if (dirent->kind == svn_node_dir)
 648             current += '/';
 649
 650         // find the first rule that matches this pathname
 651         MatchRuleList::ConstIterator match = findMatchRule(matchRules, revnum, current);
 652         if (match != matchRules.constEnd()) {
 653             if (exportDispatch(entry, change, entryFrom.isNull() ? 0 : entryFrom.constData(),
 654                                rev_from, changes, current, *match, dirpool) == EXIT_FAILURE)
 655                 return EXIT_FAILURE;
 656         } else {
 657             qCritical() << current << "rev" << revnum
 658                         << "did not match any rules; cannot continue";
 659             return EXIT_FAILURE;
 660         }
 661     }
 662
 663     return EXIT_SUCCESS;
 664 }