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/*
* Copyright (C) 2007 Thiago Macieira <thiago@kde.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QCoreApplication>
#include <QFile>
#include <QStringList>
#include <QTextStream>
#include <QDebug>
#include <limits.h>
#include <stdio.h>
#include "CommandLineParser.h"
#include "ruleparser.h"
#include "repository.h"
#include "svn.h"
QHash<QByteArray, QByteArray> loadIdentityMapFile(const QString &fileName)
{
QHash<QByteArray, QByteArray> result;
if (fileName.isEmpty())
return result;
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly)) {
fprintf(stderr, "Could not open file %s: %s",
qPrintable(fileName), qPrintable(file.errorString()));
return result;
}
while (!file.atEnd()) {
QByteArray line = file.readLine();
int comment_pos = line.indexOf('#');
if (comment_pos != -1)
line.truncate(comment_pos);
line = line.trimmed();
int space = line.indexOf(' ');
if (space == -1)
continue; // invalid line
// Support git-svn author files, too
// - svn2git native: loginname Joe User <user@example.com>
// - git-svn: loginname = Joe User <user@example.com>
int rightspace = space;
if (line.indexOf(" = ") == space)
rightspace += 2;
QByteArray realname = line.mid(rightspace).trimmed();
line.truncate(space);
result.insert(line, realname);
};
return result;
}
static const CommandLineOption options[] = {
{"--identity-map FILENAME", "provide map between svn username and email"},
{"--rules FILENAME[,FILENAME]", "the rules file(s) that determines what goes where"},
{"--add-metadata", "if passed, each git commit will have svn commit info"},
{"--resume-from revision", "start importing at svn revision number"},
{"--max-rev revision", "stop importing at svn revision number"},
{"--dry-run", "don't actually write anything"},
{"--debug-rules", "print what rule is being used for each file"},
{"--commit-interval NUMBER", "if passed the cache will be flushed to git every NUMBER of commits"},
{"-h, --help", "show help"},
{"-v, --version", "show version"},
CommandLineLastOption
};
int main(int argc, char **argv)
{
CommandLineParser::init(argc, argv);
CommandLineParser::addOptionDefinitions(options);
CommandLineParser *args = CommandLineParser::instance();
if (args->contains(QLatin1String("help")) || args->arguments().count() != 1) {
args->usage(QString(), "[Path to subversion repo]");
return 0;
}
if (args->undefinedOptions().count()) {
QTextStream out(stderr);
out << "svn-all-fast-export failed: ";
bool first = true;
foreach (QString option, args->undefinedOptions()) {
if (!first)
out << " : ";
out << "unrecognized option or missing argument for; `" << option << "'" << endl;
first = false;
}
return 10;
}
if (!args->contains("rules")) {
QTextStream out(stderr);
out << "svn-all-fast-export failed: please specify the rules using the 'rules' argument\n";
return 11;
}
if (!args->contains("identity-map")) {
QTextStream out(stderr);
out << "WARNING; no identity-map specified, all commits will be without email address\n\n";
}
QCoreApplication app(argc, argv);
// Load the configuration
RulesList rulesList(args->optionArgument(QLatin1String("rules")));
rulesList.load();
int resume_from = args->optionArgument(QLatin1String("resume-from")).toInt();
int max_rev = args->optionArgument(QLatin1String("max-rev")).toInt();
// create the repository list
QHash<QString, Repository *> repositories;
int cutoff = resume_from ? resume_from : INT_MAX;
retry:
int min_rev = 1;
foreach (Rules::Repository rule, rulesList.allRepositories()) {
Repository *repo = makeRepository(rule, repositories);
if (!repo)
return EXIT_FAILURE;
repositories.insert(rule.name, repo);
int repo_next = repo->setupIncremental(cutoff);
/*
* cutoff < resume_from => error exit eventually
* repo_next == cutoff => probably truncated log
*/
if (cutoff < resume_from && repo_next == cutoff)
/*
* Restore the log file so we fail the next time
* svn2git is invoked with the same arguments
*/
repo->restoreLog();
if (cutoff < min_rev)
/*
* We've rewound before the last revision of some
* repository that we've already seen. Start over
* from the beginning. (since cutoff is decreasing,
* we're sure we'll make forward progress eventually)
*/
goto retry;
if (min_rev < repo_next)
min_rev = repo_next;
}
if (cutoff < resume_from) {
qCritical() << "Cannot resume from" << resume_from
<< "as there are errors in revision" << cutoff;
return EXIT_FAILURE;
}
if (min_rev < resume_from)
qDebug() << "skipping revisions" << min_rev << "to" << resume_from - 1 << "as requested";
if (resume_from)
min_rev = resume_from;
Svn::initialize();
Svn svn(args->arguments().first());
svn.setMatchRules(rulesList.allMatchRules());
svn.setRepositories(repositories);
svn.setIdentityMap(loadIdentityMapFile(args->optionArgument("identity-map")));
if (max_rev < 1)
max_rev = svn.youngestRevision();
bool errors = false;
for (int i = min_rev; i <= max_rev; ++i) {
if (!svn.exportRevision(i)) {
errors = true;
break;
}
}
foreach (Repository *repo, repositories) {
repo->finalizeTags();
delete repo;
}
return errors ? EXIT_FAILURE : EXIT_SUCCESS;
}
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