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