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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" | |
19 | #include <QTextStream> | |
20 | #include <QDebug> | |
21 | ||
22 | Repository::Repository(const Rules::Repository &rule) | |
23 | : name(rule.name) | |
24 | { | |
25 | foreach (Rules::Repository::Branch branchRule, rule.branches) { | |
26 | Branch branch; | |
27 | branch.branchFrom = branchRule.branchFrom; | |
28 | if (!branch.branchFrom.startsWith("refs/")) | |
29 | branch.branchFrom.prepend("refs/heads/"); | |
30 | branch.isCreated = false; | |
31 | ||
32 | branches.insert(branchRule.name, branch); | |
33 | } | |
34 | ||
35 | // create the default branch | |
36 | branches["master"].isCreated = true; | |
37 | ||
38 | fastImport.setWorkingDirectory(name); | |
39 | } | |
40 | ||
41 | Repository::~Repository() | |
42 | { | |
43 | if (fastImport.state() != QProcess::NotRunning) { | |
44 | fastImport.closeWriteChannel(); | |
45 | fastImport.waitForFinished(); | |
46 | } | |
47 | } | |
48 | ||
49 | void Repository::reloadBranches() | |
50 | { | |
51 | QHash<QString, Branch>::Iterator it = branches.begin(), | |
52 | end = branches.end(); | |
53 | for ( ; it != end; ++it) { | |
54 | QString branchRef = it.key(); | |
55 | if (!branchRef.startsWith("refs/")) | |
56 | branchRef.prepend("refs/heads/"); | |
57 | ||
58 | bool branchExists; | |
59 | // does this branch already exist? | |
60 | QProcess revParse; | |
61 | revParse.setWorkingDirectory(name); | |
62 | revParse.start("git-rev-parse", QStringList() << "--verify" << branchRef); | |
63 | revParse.waitForFinished(); | |
64 | ||
65 | if (revParse.exitCode() == 0) | |
66 | branchExists = true; | |
67 | else | |
68 | branchExists = false; | |
69 | ||
70 | if (branchExists) { | |
71 | startFastImport(); | |
72 | fastImport.write("reset " + branchRef.toUtf8() + | |
73 | "\nfrom " + branchRef.toUtf8() + "^0\n\n"); | |
74 | it->isCreated = true; | |
75 | } | |
76 | } | |
77 | } | |
78 | ||
79 | void Repository::createBranch(const QString &branch, int revnum, | |
80 | const QString &branchFrom, int) | |
81 | { | |
82 | if (!branches.contains(branch)) { | |
83 | qCritical() << branch << "is not a known branch in repository" << name; | |
84 | exit(1); | |
85 | } | |
86 | ||
87 | startFastImport(); | |
88 | QByteArray branchRef = branch.toUtf8(); | |
89 | if (!branchRef.startsWith("refs/")) | |
90 | branchRef.prepend("refs/heads/"); | |
91 | ||
92 | Branch &br = branches[branch]; | |
93 | if (br.isCreated) { | |
94 | QByteArray backupBranch = branchRef + '_' + QByteArray::number(revnum); | |
95 | qWarning() << branch << "already exists; backing up to" << backupBranch; | |
96 | ||
97 | fastImport.write("reset " + backupBranch + "\nfrom " + branchRef + "\n\n"); | |
98 | } | |
99 | ||
100 | // now create the branch | |
101 | br.isCreated = true; | |
102 | QByteArray branchFromRef = branchFrom.toUtf8(); | |
103 | if (!branchFromRef.startsWith("refs/")) | |
104 | branchFromRef.prepend("refs/heads/"); | |
105 | ||
106 | fastImport.write("reset " + branchRef + "\nfrom " + branchFromRef + "\n\n"); | |
107 | } | |
108 | ||
109 | Repository::Transaction *Repository::newTransaction(const QString &branch, const QString &svnprefix, | |
110 | int revnum) | |
111 | { | |
112 | if (!branches.contains(branch)) { | |
113 | qCritical() << branch << "is not a known branch in repository" << name; | |
114 | return 0; | |
115 | } | |
116 | ||
117 | Transaction *txn = new Transaction; | |
118 | txn->repository = this; | |
119 | txn->branch = branch.toUtf8(); | |
120 | txn->svnprefix = svnprefix.toUtf8(); | |
121 | txn->datetime = 0; | |
122 | txn->revnum = revnum; | |
123 | txn->lastmark = revnum; | |
124 | ||
125 | startFastImport(); | |
126 | return txn; | |
127 | } | |
128 | ||
129 | void Repository::startFastImport() | |
130 | { | |
131 | if (fastImport.state() == QProcess::NotRunning) { | |
132 | // start the process | |
133 | #ifndef DRY_RUN | |
134 | fastImport.setProcessChannelMode(QProcess::ForwardedChannels); | |
135 | fastImport.start("git-fast-import", QStringList()); | |
136 | #else | |
137 | fastImport.setStandardOutputFile(name); | |
138 | fastImport.start("/bin/cat", QStringList()); | |
139 | #endif | |
140 | } | |
141 | } | |
142 | ||
143 | Repository::Transaction::~Transaction() | |
144 | { | |
145 | } | |
146 | ||
147 | void Repository::Transaction::setAuthor(const QByteArray &a) | |
148 | { | |
149 | author = a; | |
150 | } | |
151 | ||
152 | void Repository::Transaction::setDateTime(uint dt) | |
153 | { | |
154 | datetime = dt; | |
155 | } | |
156 | ||
157 | void Repository::Transaction::setLog(const QByteArray &l) | |
158 | { | |
159 | log = l; | |
160 | } | |
161 | ||
162 | void Repository::Transaction::deleteFile(const QString &path) | |
163 | { | |
164 | deletedFiles.append(path); | |
165 | } | |
166 | ||
167 | QIODevice *Repository::Transaction::addFile(const QString &path, int mode, qint64 length) | |
168 | { | |
169 | FileProperties fp; | |
170 | fp.mode = mode; | |
171 | fp.mark = ++lastmark; | |
172 | ||
173 | #ifndef DRY_RUN | |
174 | repository->fastImport.write("blob\nmark :"); | |
175 | repository->fastImport.write(QByteArray::number(fp.mark)); | |
176 | repository->fastImport.write("\ndata "); | |
177 | repository->fastImport.write(QByteArray::number(length)); | |
178 | repository->fastImport.write("\n", 1); | |
179 | repository->fastImport.waitForBytesWritten(0); | |
180 | #endif | |
181 | ||
182 | modifiedFiles.insert(path, fp); | |
183 | return &repository->fastImport; | |
184 | } | |
185 | ||
186 | void Repository::Transaction::commit() | |
187 | { | |
188 | // create the commit message | |
189 | QByteArray message = log; | |
190 | if (!message.endsWith('\n')) | |
191 | message += '\n'; | |
192 | message += "\nsvn path=" + svnprefix + "; revision=" + QByteArray::number(revnum) + "\n"; | |
193 | ||
194 | { | |
195 | QByteArray branchRef = branch; | |
196 | if (!branchRef.startsWith("refs/")) | |
197 | branchRef.prepend("refs/heads/"); | |
198 | ||
199 | QTextStream s(&repository->fastImport); | |
200 | s << "commit " << branchRef << endl; | |
201 | s << "mark :" << revnum << endl; | |
202 | s << "committer " << author << ' ' << datetime << " -0000" << endl; | |
203 | ||
204 | Branch &br = repository->branches[branch]; | |
205 | if (!br.isCreated) { | |
206 | br.isCreated = true; | |
207 | s << "from " << br.branchFrom << endl; | |
208 | } | |
209 | ||
210 | s << "data " << message.length() << endl; | |
211 | } | |
212 | ||
213 | repository->fastImport.write(message); | |
214 | ||
215 | // write the file deletions | |
216 | foreach (QString df, deletedFiles) | |
217 | repository->fastImport.write("D " + df.toUtf8() + "\n"); | |
218 | ||
219 | // write the file modifications | |
220 | QHash<QString, FileProperties>::ConstIterator it = modifiedFiles.constBegin(); | |
221 | for ( ; it != modifiedFiles.constEnd(); ++it) { | |
222 | repository->fastImport.write("M ", 2); | |
223 | repository->fastImport.write(QByteArray::number(it->mode, 8)); | |
224 | repository->fastImport.write(" :", 2); | |
225 | repository->fastImport.write(QByteArray::number(it->mark)); | |
226 | repository->fastImport.write(" ", 1); | |
227 | repository->fastImport.write(it.key().toUtf8()); | |
228 | repository->fastImport.write("\n", 1); | |
229 | } | |
230 | ||
231 | repository->fastImport.write("\n"); | |
232 | ||
233 | while (repository->fastImport.bytesToWrite() && repository->fastImport.waitForBytesWritten()) { | |
234 | // nothing | |
235 | } | |
236 | } |