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5a7327f6 TM |
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 | #include "repository.h" | |
1c4df5aa | 19 | #include <QTextStream> |
b6ba9639 | 20 | #include <QDebug> |
5a7327f6 TM |
21 | |
22 | Repository::Repository(const Rules::Repository &rule) | |
9413f448 | 23 | : name(rule.name), commitCount(0), processHasStarted(false) |
5a7327f6 TM |
24 | { |
25 | foreach (Rules::Repository::Branch branchRule, rule.branches) { | |
26 | Branch branch; | |
e087596c | 27 | branch.created = 0; // not created |
5a7327f6 TM |
28 | |
29 | branches.insert(branchRule.name, branch); | |
30 | } | |
31 | ||
b6ba9639 | 32 | // create the default branch |
e087596c | 33 | branches["master"].created = 1; |
b6ba9639 | 34 | |
1a688729 | 35 | fastImport.setWorkingDirectory(name); |
5a7327f6 | 36 | } |
1c4df5aa TM |
37 | |
38 | Repository::~Repository() | |
39 | { | |
3ffa3592 | 40 | if (fastImport.state() != QProcess::NotRunning) { |
ca192b2c TM |
41 | fastImport.write("checkpoint\n"); |
42 | fastImport.waitForBytesWritten(-1); | |
1c4df5aa | 43 | fastImport.closeWriteChannel(); |
ca192b2c TM |
44 | if (!fastImport.waitForFinished()) { |
45 | fastImport.terminate(); | |
46 | if (!fastImport.waitForFinished(200)) | |
47 | qWarning() << "git-fast-import for repository" << name << "did not die"; | |
48 | } | |
1c4df5aa TM |
49 | } |
50 | } | |
51 | ||
1a688729 TM |
52 | void Repository::reloadBranches() |
53 | { | |
c0a3eea3 TM |
54 | QProcess revParse; |
55 | revParse.setWorkingDirectory(name); | |
56 | revParse.start("git", QStringList() << "rev-parse" << "--symbolic" << "--branches"); | |
25e6c28e | 57 | revParse.waitForFinished(-1); |
1a688729 | 58 | |
c0a3eea3 | 59 | if (revParse.exitCode() == 0 && revParse.bytesAvailable()) { |
c0a3eea3 | 60 | while (revParse.canReadLine()) { |
b3b433a8 | 61 | QByteArray branchName = revParse.readLine().trimmed(); |
1a688729 | 62 | |
25e6c28e | 63 | //qDebug() << "Repo" << name << "reloaded branch" << branchName; |
c0a3eea3 TM |
64 | branches[branchName].created = 1; |
65 | fastImport.write("reset refs/heads/" + branchName + | |
25e6c28e TM |
66 | "\nfrom refs/heads/" + branchName + "^0\n\n" |
67 | "progress Branch refs/heads/" + branchName + " reloaded\n"); | |
1a688729 TM |
68 | } |
69 | } | |
70 | } | |
71 | ||
c338ae37 TM |
72 | void Repository::createBranch(const QString &branch, int revnum, |
73 | const QString &branchFrom, int) | |
74 | { | |
25e6c28e | 75 | startFastImport(); |
c338ae37 | 76 | if (!branches.contains(branch)) { |
7dd430d8 TM |
77 | qWarning() << branch << "is not a known branch in repository" << name << endl |
78 | << "Going to create it automatically"; | |
c338ae37 TM |
79 | } |
80 | ||
c338ae37 TM |
81 | QByteArray branchRef = branch.toUtf8(); |
82 | if (!branchRef.startsWith("refs/")) | |
83 | branchRef.prepend("refs/heads/"); | |
84 | ||
85 | Branch &br = branches[branch]; | |
e087596c | 86 | if (br.created && br.created != revnum) { |
c338ae37 TM |
87 | QByteArray backupBranch = branchRef + '_' + QByteArray::number(revnum); |
88 | qWarning() << branch << "already exists; backing up to" << backupBranch; | |
89 | ||
90 | fastImport.write("reset " + backupBranch + "\nfrom " + branchRef + "\n\n"); | |
91 | } | |
92 | ||
93 | // now create the branch | |
e087596c | 94 | br.created = revnum; |
c338ae37 TM |
95 | QByteArray branchFromRef = branchFrom.toUtf8(); |
96 | if (!branchFromRef.startsWith("refs/")) | |
97 | branchFromRef.prepend("refs/heads/"); | |
98 | ||
7dd430d8 TM |
99 | if (!branches.contains(branchFrom) || !branches.value(branchFrom).created) { |
100 | qCritical() << branch << "in repository" << name | |
101 | << "is branching from branch" << branchFrom | |
102 | << "but the latter doesn't exist. Can't continue."; | |
103 | exit(1); | |
104 | } | |
105 | ||
25e6c28e TM |
106 | fastImport.write("reset " + branchRef + "\nfrom " + branchFromRef + "\n\n" |
107 | "progress Branch " + branchRef + " created from " + branchFromRef + "\n\n"); | |
c338ae37 TM |
108 | } |
109 | ||
1c4df5aa TM |
110 | Repository::Transaction *Repository::newTransaction(const QString &branch, const QString &svnprefix, |
111 | int revnum) | |
112 | { | |
25e6c28e | 113 | startFastImport(); |
b6ba9639 | 114 | if (!branches.contains(branch)) { |
ff26f180 TM |
115 | qWarning() << branch << "is not a known branch in repository" << name << endl |
116 | << "Going to create it automatically"; | |
b6ba9639 | 117 | } |
1c4df5aa TM |
118 | |
119 | Transaction *txn = new Transaction; | |
120 | txn->repository = this; | |
121 | txn->branch = branch.toUtf8(); | |
122 | txn->svnprefix = svnprefix.toUtf8(); | |
123 | txn->datetime = 0; | |
124 | txn->revnum = revnum; | |
125 | txn->lastmark = revnum; | |
126 | ||
a812d0b1 | 127 | if ((++commitCount % 10000) == 0) |
b50b9285 TM |
128 | // write everything to disk every 10000 commits |
129 | fastImport.write("checkpoint\n"); | |
1a688729 TM |
130 | return txn; |
131 | } | |
132 | ||
133 | void Repository::startFastImport() | |
134 | { | |
688d69ec | 135 | if (fastImport.state() == QProcess::NotRunning) { |
298d7968 TM |
136 | if (processHasStarted) |
137 | qFatal("git-fast-import has been started once and crashed?"); | |
138 | processHasStarted = true; | |
139 | ||
1c4df5aa | 140 | // start the process |
298d7968 TM |
141 | QString outputFile = name; |
142 | outputFile.replace('/', '_'); | |
143 | outputFile.prepend("log-"); | |
144 | fastImport.setStandardOutputFile(outputFile, QIODevice::Append); | |
f34275cf | 145 | fastImport.setProcessChannelMode(QProcess::MergedChannels); |
298d7968 | 146 | |
688d69ec | 147 | #ifndef DRY_RUN |
25e6c28e | 148 | fastImport.start("git", QStringList() << "fast-import"); |
688d69ec TM |
149 | #else |
150 | fastImport.start("/bin/cat", QStringList()); | |
151 | #endif | |
25e6c28e TM |
152 | |
153 | reloadBranches(); | |
688d69ec | 154 | } |
1c4df5aa TM |
155 | } |
156 | ||
157 | Repository::Transaction::~Transaction() | |
158 | { | |
159 | } | |
160 | ||
161 | void Repository::Transaction::setAuthor(const QByteArray &a) | |
162 | { | |
163 | author = a; | |
164 | } | |
165 | ||
166 | void Repository::Transaction::setDateTime(uint dt) | |
167 | { | |
168 | datetime = dt; | |
169 | } | |
170 | ||
171 | void Repository::Transaction::setLog(const QByteArray &l) | |
172 | { | |
173 | log = l; | |
174 | } | |
175 | ||
176 | void Repository::Transaction::deleteFile(const QString &path) | |
177 | { | |
178 | deletedFiles.append(path); | |
179 | } | |
180 | ||
181 | QIODevice *Repository::Transaction::addFile(const QString &path, int mode, qint64 length) | |
182 | { | |
183 | FileProperties fp; | |
184 | fp.mode = mode; | |
185 | fp.mark = ++lastmark; | |
186 | ||
688d69ec | 187 | #ifndef DRY_RUN |
1c4df5aa TM |
188 | repository->fastImport.write("blob\nmark :"); |
189 | repository->fastImport.write(QByteArray::number(fp.mark)); | |
190 | repository->fastImport.write("\ndata "); | |
191 | repository->fastImport.write(QByteArray::number(length)); | |
192 | repository->fastImport.write("\n", 1); | |
688d69ec | 193 | #endif |
1c4df5aa TM |
194 | |
195 | modifiedFiles.insert(path, fp); | |
196 | return &repository->fastImport; | |
197 | } | |
198 | ||
199 | void Repository::Transaction::commit() | |
200 | { | |
201 | // create the commit message | |
202 | QByteArray message = log; | |
203 | if (!message.endsWith('\n')) | |
204 | message += '\n'; | |
d91c2d9b | 205 | message += "\nsvn path=" + svnprefix + "; revision=" + QByteArray::number(revnum) + "\n"; |
1c4df5aa TM |
206 | |
207 | { | |
208 | QByteArray branchRef = branch; | |
8d7b49e5 | 209 | if (!branchRef.startsWith("refs/")) |
1c4df5aa TM |
210 | branchRef.prepend("refs/heads/"); |
211 | ||
212 | QTextStream s(&repository->fastImport); | |
213 | s << "commit " << branchRef << endl; | |
214 | s << "mark :" << revnum << endl; | |
f34275cf | 215 | s << "committer " << QString::fromUtf8(author) << ' ' << datetime << " -0000" << endl; |
1c4df5aa TM |
216 | |
217 | Branch &br = repository->branches[branch]; | |
bdc20860 | 218 | if (!br.created) { |
72da4610 | 219 | qWarning() << "Branch" << branch << "in repository" << repository->name << "doesn't exist at revision" |
bdc20860 TM |
220 | << revnum << "-- did you resume from the wrong revision?"; |
221 | br.created = revnum; | |
222 | } | |
1c4df5aa TM |
223 | |
224 | s << "data " << message.length() << endl; | |
225 | } | |
226 | ||
227 | repository->fastImport.write(message); | |
6b510c52 | 228 | repository->fastImport.putChar('\n'); |
1c4df5aa TM |
229 | |
230 | // write the file deletions | |
6b450d1d TM |
231 | if (deletedFiles.contains("")) |
232 | repository->fastImport.write("deleteall\n"); | |
233 | else | |
234 | foreach (QString df, deletedFiles) | |
235 | repository->fastImport.write("D " + df.toUtf8() + "\n"); | |
1c4df5aa TM |
236 | |
237 | // write the file modifications | |
238 | QHash<QString, FileProperties>::ConstIterator it = modifiedFiles.constBegin(); | |
239 | for ( ; it != modifiedFiles.constEnd(); ++it) { | |
240 | repository->fastImport.write("M ", 2); | |
241 | repository->fastImport.write(QByteArray::number(it->mode, 8)); | |
242 | repository->fastImport.write(" :", 2); | |
243 | repository->fastImport.write(QByteArray::number(it->mark)); | |
244 | repository->fastImport.write(" ", 1); | |
245 | repository->fastImport.write(it.key().toUtf8()); | |
246 | repository->fastImport.write("\n", 1); | |
247 | } | |
248 | ||
25e6c28e TM |
249 | repository->fastImport.write("\nprogress Commit #" + |
250 | QByteArray::number(repository->commitCount) + | |
251 | " branch " + branch + | |
252 | " = SVN r" + QByteArray::number(revnum) + "\n\n"); | |
253 | printf(" %d modifications to \"%s\"", | |
254 | deletedFiles.count() + modifiedFiles.count(), | |
255 | qPrintable(repository->name)); | |
1c4df5aa | 256 | |
25f3205a | 257 | while (repository->fastImport.bytesToWrite()) |
50cd32a4 | 258 | if (!repository->fastImport.waitForBytesWritten(-1)) |
25f3205a | 259 | qFatal("Failed to write to process: %s", qPrintable(repository->fastImport.errorString())); |
1c4df5aa | 260 | } |