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