2 * Copyright (C) 2007 Thiago Macieira <thiago@kde.org>
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.
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.
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/>.
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
25 #define _LARGEFILE_SUPPORT
26 #define _LARGEFILE64_SUPPORT
37 #include <apr_getopt.h>
38 #include <apr_general.h>
41 #include <svn_pools.h>
42 #include <svn_repos.h>
43 #include <svn_types.h>
48 #include "repository.h"
51 #define SVN_ERR(expr) SVN_INT_ERR(expr)
53 typedef QList<Rules::Match> MatchRuleList;
54 typedef QHash<QString, Repository *> RepositoryHash;
55 typedef QHash<QByteArray, QByteArray> IdentityHash;
60 AprAutoPool(const AprAutoPool &);
61 AprAutoPool &operator=(const AprAutoPool &);
63 inline AprAutoPool(apr_pool_t *parent = NULL)
64 { pool = svn_pool_create(parent); }
66 { svn_pool_destroy(pool); }
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; }
76 MatchRuleList matchRules;
77 RepositoryHash repositories;
78 IdentityHash identities;
80 SvnPrivate(const QString &pathToRepository);
82 int youngestRevision();
83 int exportRevision(int revnum);
85 int openRepository(const QString &pathToRepository);
88 AprAutoPool global_pool;
90 svn_revnum_t youngest_rev;
93 void Svn::initialize()
95 // initialize APR or exit
96 if (apr_initialize() != APR_SUCCESS) {
97 fprintf(stderr, "You lose at apr_initialize().\n");
102 static struct Destructor { ~Destructor() { apr_terminate(); } } destructor;
105 Svn::Svn(const QString &pathToRepository)
106 : d(new SvnPrivate(pathToRepository))
115 void Svn::setMatchRules(const MatchRuleList &matchRules)
117 d->matchRules = matchRules;
120 void Svn::setRepositories(const RepositoryHash &repositories)
122 d->repositories = repositories;
125 int Svn::youngestRevision()
127 return d->youngestRevision();
130 bool Svn::exportRevision(int revnum)
132 return d->exportRevision(revnum) == EXIT_SUCCESS;
135 SvnPrivate::SvnPrivate(const QString &pathToRepository)
138 openRepository(pathToRepository);
140 // get the youngest revision
141 svn_fs_youngest_rev(&youngest_rev, fs, global_pool);
144 SvnPrivate::~SvnPrivate()
146 svn_pool_destroy(global_pool);
149 int SvnPrivate::youngestRevision()
154 int SvnPrivate::openRepository(const QString &pathToRepository)
157 SVN_ERR(svn_repos_open(&repos, QFile::encodeName(pathToRepository), global_pool));
158 fs = svn_repos_fs(repos);
163 enum RuleType { AnyRule = 0, NoIgnoreRule = 0x01, NoRecurseRule = 0x02 };
165 static MatchRuleList::ConstIterator
166 findMatchRule(const MatchRuleList &matchRules, int revnum, const QString ¤t,
167 int ruleMask = AnyRule)
169 MatchRuleList::ConstIterator it = matchRules.constBegin(),
170 end = matchRules.constEnd();
171 for ( ; it != end; ++it) {
172 if (it->minRevision > revnum)
174 if (it->maxRevision != -1 && it->maxRevision < revnum)
176 if (it->action == Rules::Match::Ignore && ruleMask & NoIgnoreRule)
178 if (it->action == Rules::Match::Recurse && ruleMask & NoRecurseRule)
180 if (it->rx.indexIn(current) == 0)
188 static void splitPathName(const Rules::Match &rule, const QString &pathName, QString *svnprefix_p,
189 QString *repository_p, QString *branch_p, QString *path_p)
191 QString svnprefix = pathName;
192 svnprefix.truncate(rule.rx.matchedLength());
194 *svnprefix_p = svnprefix;
197 *repository_p = svnprefix;
198 repository_p->replace(rule.rx, rule.repository);
202 *branch_p = svnprefix;
203 branch_p->replace(rule.rx, rule.branch);
207 *path_p = pathName.mid(svnprefix.length());
210 static int pathMode(svn_fs_root_t *fs_root, const char *pathname, apr_pool_t *pool)
212 svn_string_t *propvalue;
213 SVN_ERR(svn_fs_node_prop(&propvalue, fs_root, pathname, "svn:executable", pool));
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)
226 svn_error_t *QIODevice_write(void *baton, const char *data, apr_size_t *len)
228 QIODevice *device = reinterpret_cast<QIODevice *>(baton);
229 device->write(data, *len);
231 while (device->bytesToWrite() > 32*1024) {
232 if (!device->waitForBytesWritten(-1)) {
233 qFatal("Failed to write to process: %s", qPrintable(device->errorString()));
234 return svn_error_createf(APR_EOF, SVN_NO_ERROR, "Failed to write to process: %s",
235 qPrintable(device->errorString()));
241 static svn_stream_t *streamForDevice(QIODevice *device, apr_pool_t *pool)
243 svn_stream_t *stream = svn_stream_create(device, pool);
244 svn_stream_set_write(stream, QIODevice_write);
249 static int dumpBlob(Repository::Transaction *txn, svn_fs_root_t *fs_root,
250 const char *pathname, const QString &finalPathName, apr_pool_t *pool)
252 AprAutoPool dumppool(pool);
254 int mode = pathMode(fs_root, pathname, dumppool);
256 svn_filesize_t stream_length;
258 SVN_ERR(svn_fs_file_length(&stream_length, fs_root, pathname, dumppool));
259 QIODevice *io = txn->addFile(finalPathName, mode, stream_length);
263 svn_stream_t *in_stream, *out_stream;
264 SVN_ERR(svn_fs_file_contents(&in_stream, fs_root, pathname, dumppool));
266 // open a generic svn_stream_t for the QIODevice
267 out_stream = streamForDevice(io, dumppool);
268 SVN_ERR(svn_stream_copy(in_stream, out_stream, dumppool));
270 // print an ending newline
277 static int recursiveDumpDir(Repository::Transaction *txn, svn_fs_root_t *fs_root,
278 const QByteArray &pathname, const QString &finalPathName,
281 // get the dir listing
283 SVN_ERR(svn_fs_dir_entries(&entries, fs_root, pathname, pool));
284 AprAutoPool dirpool(pool);
286 for (apr_hash_index_t *i = apr_hash_first(pool, entries); i; i = apr_hash_next(i)) {
290 apr_hash_this(i, &vkey, NULL, &value);
292 svn_fs_dirent_t *dirent = reinterpret_cast<svn_fs_dirent_t *>(value);
293 QByteArray entryName = pathname + '/' + dirent->name;
294 QString entryFinalName = finalPathName + dirent->name;
296 if (dirent->kind == svn_node_dir) {
297 entryFinalName += '/';
298 if (recursiveDumpDir(txn, fs_root, entryName, entryFinalName, dirpool) == EXIT_FAILURE)
300 } else if (dirent->kind == svn_node_file) {
303 if (dumpBlob(txn, fs_root, entryName, entryFinalName, dirpool) == EXIT_FAILURE)
311 static bool wasDir(svn_fs_t *fs, int revnum, const char *pathname, apr_pool_t *pool)
313 AprAutoPool subpool(pool);
314 svn_fs_root_t *fs_root;
315 if (svn_fs_revision_root(&fs_root, fs, revnum, subpool) != SVN_NO_ERROR)
318 svn_boolean_t is_dir;
319 if (svn_fs_is_dir(&is_dir, fs_root, pathname, subpool) != SVN_NO_ERROR)
325 time_t get_epoch(char *svn_date)
328 memset(&tm, 0, sizeof tm);
329 QByteArray date(svn_date, strlen(svn_date) - 8);
330 strptime(date, "%Y-%m-%dT%H:%M:%S", &tm);
338 QHash<QString, Repository::Transaction *> transactions;
339 MatchRuleList matchRules;
340 RepositoryHash repositories;
341 IdentityHash identities;
344 svn_fs_root_t *fs_root;
347 SvnRevision(int revision, svn_fs_t *f, apr_pool_t *parent_pool)
348 : pool(parent_pool), fs(f), fs_root(0), revnum(revision)
354 SVN_ERR(svn_fs_revision_root(&fs_root, fs, revnum, pool));
358 int prepareTransactions();
361 int exportEntry(const char *path, const svn_fs_path_change_t *change, apr_hash_t *changes);
362 int exportDispatch(const char *path, const svn_fs_path_change_t *change,
363 const char *path_from, svn_revnum_t rev_from,
364 apr_hash_t *changes, const QString ¤t, const Rules::Match &rule,
366 int exportInternal(const char *path, const svn_fs_path_change_t *change,
367 const char *path_from, svn_revnum_t rev_from,
368 const QString ¤t, const Rules::Match &rule);
369 int recurse(const char *path, const svn_fs_path_change_t *change,
370 const char *path_from, svn_revnum_t rev_from,
371 apr_hash_t *changes, apr_pool_t *pool);
374 int SvnPrivate::exportRevision(int revnum)
376 SvnRevision rev(revnum, fs, global_pool);
377 rev.matchRules = matchRules;
378 rev.repositories = repositories;
379 rev.identities = identities;
381 // open this revision:
382 printf("Exporting revision %d ", revnum);
385 if (rev.open() == EXIT_FAILURE)
388 if (rev.prepareTransactions() == EXIT_FAILURE)
391 if (rev.transactions.isEmpty()) {
392 printf(" nothing to do\n");
393 return EXIT_SUCCESS; // no changes?
396 if (rev.commit() == EXIT_FAILURE)
403 int SvnRevision::prepareTransactions()
405 // find out what was changed in this revision:
407 SVN_ERR(svn_fs_paths_changed(&changes, fs_root, pool));
408 for (apr_hash_index_t *i = apr_hash_first(pool, changes); i; i = apr_hash_next(i)) {
411 apr_hash_this(i, &vkey, NULL, &value);
412 const char *key = reinterpret_cast<const char *>(vkey);
413 svn_fs_path_change_t *change = reinterpret_cast<svn_fs_path_change_t *>(value);
415 if (exportEntry(key, change, changes) == EXIT_FAILURE)
422 int SvnRevision::commit()
424 // now create the commit
425 apr_hash_t *revprops;
426 SVN_ERR(svn_fs_revision_proplist(&revprops, fs, revnum, pool));
427 svn_string_t *svnauthor = (svn_string_t*)apr_hash_get(revprops, "svn:author", APR_HASH_KEY_STRING);
428 svn_string_t *svndate = (svn_string_t*)apr_hash_get(revprops, "svn:date", APR_HASH_KEY_STRING);
429 svn_string_t *svnlog = (svn_string_t*)apr_hash_get(revprops, "svn:log", APR_HASH_KEY_STRING);
431 QByteArray log = (char *)svnlog->data;
432 QByteArray authorident = svnauthor ? identities.value((char *)svnauthor->data) : QByteArray();
433 time_t epoch = get_epoch((char*)svndate->data);
434 if (authorident.isEmpty()) {
435 if (!svnauthor || svn_string_isempty(svnauthor))
436 authorident = "nobody <nobody@localhost>";
438 authorident = svnauthor->data + QByteArray(" <") +
439 svnauthor->data + QByteArray("@localhost>");
442 foreach (Repository::Transaction *txn, transactions) {
443 txn->setAuthor(authorident);
444 txn->setDateTime(epoch);
454 int SvnRevision::exportEntry(const char *key, const svn_fs_path_change_t *change,
457 AprAutoPool revpool(pool.data());
458 QString current = QString::fromUtf8(key);
460 // was this copied from somewhere?
461 svn_revnum_t rev_from;
462 const char *path_from;
463 SVN_ERR(svn_fs_copied_from(&rev_from, &path_from, fs_root, key, revpool));
465 // is this a directory?
466 svn_boolean_t is_dir;
467 SVN_ERR(svn_fs_is_dir(&is_dir, fs_root, key, revpool));
469 if (path_from == NULL) {
470 // no, it's a new directory being added
471 // Git doesn't handle directories, so we don't either
472 //qDebug() << " mkdir ignored:" << key;
477 qDebug() << " " << key << "was copied from" << path_from;
480 // find the first rule that matches this pathname
481 MatchRuleList::ConstIterator match = findMatchRule(matchRules, revnum, current);
482 if (match != matchRules.constEnd()) {
483 const Rules::Match &rule = *match;
484 return exportDispatch(key, change, path_from, rev_from, changes, current, rule, revpool);
487 if (is_dir && path_from != NULL) {
488 qDebug() << current << "is a copy-with-history, auto-recursing";
489 return recurse(key, change, path_from, rev_from, changes, revpool);
490 } else if (wasDir(fs, revnum - 1, key, revpool)) {
491 qDebug() << current << "was a directory; ignoring";
492 } else if (change->change_kind == svn_fs_path_change_delete) {
493 qDebug() << current << "is being deleted but I don't know anything about it; ignoring";
495 qCritical() << current << "did not match any rules; cannot continue";
502 int SvnRevision::exportDispatch(const char *key, const svn_fs_path_change_t *change,
503 const char *path_from, svn_revnum_t rev_from,
504 apr_hash_t *changes, const QString ¤t,
505 const Rules::Match &rule, apr_pool_t *pool)
507 switch (rule.action) {
508 case Rules::Match::Ignore:
510 qDebug() << " " << qPrintable(current) << "rev" << revnum
511 << "-> ignored (rule" << rule << ")";
514 case Rules::Match::Recurse:
515 return recurse(key, change, path_from, rev_from, changes, pool);
517 case Rules::Match::Export:
518 return exportInternal(key, change, path_from, rev_from, current, rule);
525 int SvnRevision::exportInternal(const char *key, const svn_fs_path_change_t *change,
526 const char *path_from, svn_revnum_t rev_from,
527 const QString ¤t, const Rules::Match &rule)
529 QString svnprefix, repository, branch, path;
530 splitPathName(rule, current, &svnprefix, &repository, &branch, &path);
534 // qDebug() << " " << qPrintable(current) << "rev" << revnum << "->"
535 // << qPrintable(repository) << qPrintable(branch) << qPrintable(path);
537 if (path.isEmpty() && path_from != NULL) {
538 QString previous = QString::fromUtf8(path_from) + '/';
539 MatchRuleList::ConstIterator prevmatch =
540 findMatchRule(matchRules, rev_from, previous, NoIgnoreRule);
541 if (prevmatch != matchRules.constEnd()) {
542 QString prevsvnprefix, prevrepository, prevbranch, prevpath;
543 splitPathName(*prevmatch, previous, &prevsvnprefix, &prevrepository,
544 &prevbranch, &prevpath);
546 if (!prevpath.isEmpty()) {
547 qDebug() << qPrintable(current) << "is a partial branch of repository"
548 << qPrintable(prevrepository) << "branch"
549 << qPrintable(prevbranch) << "subdir"
550 << qPrintable(prevpath);
551 } else if (prevrepository != repository) {
552 qWarning() << qPrintable(current) << "rev" << revnum
553 << "is a cross-repository copy (from repository"
554 << qPrintable(prevrepository) << "branch"
555 << qPrintable(prevbranch) << "path"
556 << qPrintable(prevpath) << "rev" << rev_from << ")";
557 } else if (prevbranch == branch) {
558 // same branch and same repository
559 qDebug() << qPrintable(current) << "rev" << revnum
560 << "is an SVN rename from"
561 << qPrintable(previous) << "rev" << rev_from;
564 // same repository but not same branch
565 // this means this is a plain branch
566 qDebug() << qPrintable(repository) << ": branch"
567 << qPrintable(branch) << "is branching from"
568 << qPrintable(prevbranch);
570 Repository *repo = repositories.value(repository, 0);
572 qCritical() << "Rule" << rule
573 << "references unknown repository" << repository;
577 repo->createBranch(branch, revnum, prevbranch, rev_from);
583 Repository::Transaction *txn = transactions.value(repository + branch, 0);
585 Repository *repo = repositories.value(repository, 0);
587 qCritical() << "Rule" << rule
588 << "references unknown repository" << repository;
592 txn = repo->newTransaction(branch, svnprefix, revnum);
596 transactions.insert(repository + branch, txn);
599 if (change->change_kind == svn_fs_path_change_delete) {
600 txn->deleteFile(path);
601 } else if (!current.endsWith('/')) {
602 dumpBlob(txn, fs_root, key, path, pool);
604 QString pathNoSlash = path;
606 txn->deleteFile(pathNoSlash);
607 recursiveDumpDir(txn, fs_root, key, path, pool);
613 int SvnRevision::recurse(const char *path, const svn_fs_path_change_t *change,
614 const char *path_from, svn_revnum_t rev_from,
615 apr_hash_t *changes, apr_pool_t *pool)
617 // get the dir listing
619 SVN_ERR(svn_fs_dir_entries(&entries, fs_root, path, pool));
621 AprAutoPool dirpool(pool);
622 for (apr_hash_index_t *i = apr_hash_first(pool, entries); i; i = apr_hash_next(i)) {
626 apr_hash_this(i, &vkey, NULL, &value);
628 svn_fs_dirent_t *dirent = reinterpret_cast<svn_fs_dirent_t *>(value);
629 QByteArray entry = path + QByteArray("/") + dirent->name;
630 QByteArray entryFrom;
632 entryFrom = path_from + QByteArray("/") + dirent->name;
634 // check if this entry is in the changelist for this revision already
635 if (apr_hash_get(changes, entry.constData(), APR_HASH_KEY_STRING)) {
636 qDebug() << entry << "rev" << revnum
637 << "is in the change-list, deferring to that one";
641 QString current = QString::fromUtf8(entry);
642 if (dirent->kind == svn_node_dir)
645 // find the first rule that matches this pathname
646 MatchRuleList::ConstIterator match = findMatchRule(matchRules, revnum, current);
647 if (match != matchRules.constEnd()) {
648 if (exportDispatch(entry, change, entryFrom.isNull() ? 0 : entryFrom.constData(),
649 rev_from, changes, current, *match, dirpool) == EXIT_FAILURE)
652 qCritical() << current << "rev" << revnum
653 << "did not match any rules; cannot continue";