]> andersk Git - svn-all-fast-export.git/blob - src/ruleparser.cpp
Refactor and add the ability to recurse into certain subdirs
[svn-all-fast-export.git] / src / ruleparser.cpp
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+)", Qt::CaseInsensitive);
52
53     QRegExp matchLine("match\\s+(.*)", Qt::CaseInsensitive);
54     QRegExp matchActionLine("action\\s+(\\w+)", Qt::CaseInsensitive);
55     QRegExp matchRepoLine("repository\\s+(\\S+)", Qt::CaseInsensitive);
56     QRegExp matchBranchLine("branch\\s+(\\S+)", Qt::CaseInsensitive);
57     QRegExp matchRevLine("(min|max) revision (\\d+)", Qt::CaseInsensitive);
58
59     QTextStream s(&file);
60     enum { ReadingNone, ReadingRepository, ReadingMatch } state = ReadingNone;
61     Repository repo;
62     Match match;
63     int lineNumber = 0;
64     while (!s.atEnd()) {
65         ++lineNumber;
66         QString origLine = s.readLine();
67         QString line = origLine;
68
69         int hash = line.indexOf('#');
70         if (hash != -1)
71             line.truncate(hash);
72         line = line.trimmed();
73         if (line.isEmpty())
74             continue;
75
76         if (state == ReadingRepository) {
77             if (repoBranchLine.exactMatch(line)) {
78                 Repository::Branch branch;
79                 branch.name = repoBranchLine.cap(1);
80
81                 repo.branches += branch;
82                 continue;
83             } else if (line == "end repository") {
84                 m_repositories += repo;
85                 state = ReadingNone;
86                 continue;
87             }
88         } else if (state == ReadingMatch) {
89             if (matchRepoLine.exactMatch(line)) {
90                 match.repository = matchRepoLine.cap(1);
91                 continue;
92             } else if (matchBranchLine.exactMatch(line)) {
93                 match.branch = matchBranchLine.cap(1);
94                 continue;
95             } else if (matchRevLine.exactMatch(line)) {
96                 if (matchRevLine.cap(1) == "min")
97                     match.minRevision = matchRevLine.cap(2).toInt();
98                 else            // must be max
99                     match.maxRevision = matchRevLine.cap(2).toInt();
100                 continue;
101             } else if (matchActionLine.exactMatch(line)) {
102                 QString action = matchActionLine.cap(1);
103                 if (action == "export")
104                     match.action = Match::Export;
105                 else if (action == "ignore")
106                     match.action = Match::Ignore;
107                 else if (action == "recurse")
108                     match.action = Match::Recurse;
109                 else
110                     qFatal("Invalid action \"%s\" on line %d", qPrintable(action), lineNumber);
111                 continue;
112             } else if (line == "end match") {
113                 if (!match.repository.isEmpty())
114                     match.action = Match::Export;
115                 m_matchRules += match;
116                 state = ReadingNone;
117                 continue;
118             }
119         }
120
121         bool isRepositoryRule = repoLine.exactMatch(line);
122         bool isMatchRule = matchLine.exactMatch(line);
123
124         if (isRepositoryRule) {
125             // repository rule
126             state = ReadingRepository;
127             repo = Repository(); // clear
128             repo.name = repoLine.cap(1);
129             repo.lineNumber = lineNumber;
130         } else if (isMatchRule) {
131             // match rule
132             state = ReadingMatch;
133             match = Match();
134             match.rx = QRegExp(matchLine.cap(1), Qt::CaseSensitive, QRegExp::RegExp2);
135             match.lineNumber = lineNumber;
136         } else {
137             qFatal("Malformed line in rules file: line %d: %s",
138                    lineNumber, qPrintable(origLine));
139         }
140     }
141 }
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