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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 <QTextStream>
19 #include <QFile>
20 #include <QDebug>
21
22 #include "ruleparser.h"
23
24 Rules::Rules(const QString &fn)
25     : filename(fn)
26 {
27 }
28
29 Rules::~Rules()
30 {
31 }
32
33 QList<Rules::Repository> Rules::repositories()
34 {
35     return m_repositories;
36 }
37
38 QList<Rules::Match> Rules::matchRules()
39 {
40     return m_matchRules;
41 }
42
43 void Rules::load()
44 {
45     QFile file(filename);
46     if (!file.open(QIODevice::ReadOnly))
47         return;
48
49     // initialize the regexps we will use
50     QRegExp repoLine("create repository\\s+(\\S+)", Qt::CaseInsensitive);
51     QRegExp repoBranchLine("branch\\s+(\\S+)\\s+from\\s+(\\S+)", Qt::CaseInsensitive);
52     QRegExp matchLine("match\\s+(.*)", Qt::CaseInsensitive);
53     QRegExp matchRepoLine("repository\\s+(\\S+)", Qt::CaseInsensitive);
54     QRegExp matchBranchLine("branch\\s+(\\S+)", Qt::CaseInsensitive);
55     QRegExp matchPathLine("path\\s+(.*)", Qt::CaseInsensitive);
56
57     QTextStream s(&file);
58     enum { ReadingNone, ReadingRepository, ReadingMatch } state = ReadingNone;
59     Repository repo;
60     Match match;
61     while (!s.atEnd()) {
62         QString origLine = s.readLine();
63         QString line = origLine;
64
65         int hash = line.indexOf('#');
66         if (hash != -1)
67             line.truncate(hash);
68         line = line.trimmed();
69         if (line.isEmpty())
70             continue;
71
72         if (state == ReadingRepository) {
73             if (repoBranchLine.exactMatch(line)) {
74                 Repository::Branch branch;
75                 branch.name = repoBranchLine.cap(1);
76                 branch.branchFrom = repoBranchLine.cap(2);
77
78                 repo.branches += branch;
79                 continue;
80             } else if (line == "end repository") {
81                 m_repositories += repo;
82                 state = ReadingNone;
83                 continue;
84             }
85         } else if (state == ReadingMatch) {
86             if (matchRepoLine.exactMatch(line)) {
87                 match.repository = matchRepoLine.cap(1);
88                 continue;
89             } else if (matchBranchLine.exactMatch(line)) {
90                 match.branch = matchBranchLine.cap(1);
91                 continue;
92             } else if (matchPathLine.exactMatch(line)) {
93                 match.path = matchPathLine.cap(1);
94                 continue;
95             } else if (line == "end match") {
96                 m_matchRules += match;
97                 state = ReadingNone;
98                 continue;
99             }
100         }
101
102         bool isRepositoryRule = repoLine.exactMatch(line);
103         bool isMatchRule = matchLine.exactMatch(line);
104
105         if (isRepositoryRule) {
106             // repository rule
107             state = ReadingRepository;
108             repo = Repository(); // clear
109             repo.name = repoLine.cap(1);
110         } else if (isMatchRule) {
111             // match rule
112             state = ReadingMatch;
113             match = Match();
114             match.rx = QRegExp(matchLine.cap(1), Qt::CaseSensitive, QRegExp::RegExp2);
115         } else {
116             qWarning() << "Malformed line in configure file:" << origLine;
117             state = ReadingNone;
118         }
119     }
120 }
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