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/*
* Copyright (C) 2007 Thiago Macieira <thiago@kde.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QTextStream>
#include <QList>
#include <QFile>
#include <QDebug>
#include "ruleparser.h"
Rules::Rules(const QString &fn)
: filename(fn)
{
}
Rules::~Rules()
{
}
const QList<Rules::Repository> Rules::repositories() const
{
return m_repositories;
}
const QList<Rules::Match> Rules::matchRules() const
{
return m_matchRules;
}
QStringList Rules::readRules(const QString &filename) const
{
QFile file(filename);
if (!file.open(QIODevice::ReadOnly))
qFatal("Could not read the rules file: %s", qPrintable(filename));
QStringList allLines;
QRegExp includeLine("include\\s+(.*)", Qt::CaseInsensitive);
QTextStream s(&file);
QStringList lines = s.readAll().split('\n', QString::KeepEmptyParts);
QStringList::iterator it;
for(it = lines.begin(); it != lines.end(); ++it) {
QString line = *it;
bool isIncludeRule = includeLine.exactMatch(line);
if (isIncludeRule) {
int index = filename.lastIndexOf("/");
QString includeFile = filename.left( index + 1) + includeLine.cap(1);
allLines.append( readRules(includeFile));
} else {
allLines.append(line);
}
}
file.close();
return allLines;
}
void Rules::load()
{
QStringList lines = readRules(filename);
// initialize the regexps we will use
QRegExp repoLine("create repository\\s+(\\S+)", Qt::CaseInsensitive);
QRegExp matchLine("match\\s+(.*)", Qt::CaseInsensitive);
QRegExp matchActionLine("action\\s+(\\w+)", Qt::CaseInsensitive);
QRegExp matchRepoLine("repository\\s+(\\S+)", Qt::CaseInsensitive);
QRegExp matchBranchLine("branch\\s+(\\S+)", Qt::CaseInsensitive);
QRegExp matchRevLine("(min|max) revision (\\d+)", Qt::CaseInsensitive);
QRegExp matchAnnotateLine("annotated\\s+(\\S+)", Qt::CaseInsensitive);
QRegExp matchPrefixLine("prefix\\s+(\\S+)", Qt::CaseInsensitive);
QRegExp declareLine("declare\\s+(\\S+)\\s*=\\s*(\\S+)", Qt::CaseInsensitive);
QRegExp variableLine("\\$\\{(\\S+)\\}", Qt::CaseInsensitive);
QMap<QString,QString> variables;
enum { ReadingNone, ReadingRepository, ReadingMatch } state = ReadingNone;
Repository repo;
Match match;
int lineNumber = 0;
QStringList::iterator it;
for(it = lines.begin(); it != lines.end(); ++it) {
++lineNumber;
QString origLine = *it;
QString line = origLine;
int hash = line.indexOf('#');
if (hash != -1)
line.truncate(hash);
line = line.trimmed();
if (line.isEmpty())
continue;
int index = variableLine.indexIn(line);
if ( index != -1 ) {
if (!variables.contains(variableLine.cap(1)))
qFatal("Undeclared variable: %s", qPrintable(variableLine.cap(1)));
line = line.replace(variableLine, variables[variableLine.cap(1)]);
}
if (state == ReadingRepository) {
if (matchBranchLine.exactMatch(line)) {
Repository::Branch branch;
branch.name = matchBranchLine.cap(1);
repo.branches += branch;
continue;
} else if (matchRepoLine.exactMatch(line)) {
repo.forwardTo = matchRepoLine.cap(1);
continue;
} else if (matchPrefixLine.exactMatch(line)) {
repo.prefix = matchPrefixLine.cap(1);
continue;
} else if (line == "end repository") {
m_repositories += repo;
{
// clear out 'repo'
Repository temp;
std::swap(repo, temp);
}
state = ReadingNone;
continue;
}
} else if (state == ReadingMatch) {
if (matchRepoLine.exactMatch(line)) {
match.repository = matchRepoLine.cap(1);
continue;
} else if (matchBranchLine.exactMatch(line)) {
match.branch = matchBranchLine.cap(1);
continue;
} else if (matchRevLine.exactMatch(line)) {
if (matchRevLine.cap(1) == "min")
match.minRevision = matchRevLine.cap(2).toInt();
else // must be max
match.maxRevision = matchRevLine.cap(2).toInt();
continue;
} else if (matchPrefixLine.exactMatch(line)) {
match.prefix = matchPrefixLine.cap(1);
if( match.prefix.startsWith('/'))
match.prefix = match.prefix.mid(1);
if( !match.prefix.endsWith('/'))
match.prefix.append('/');
continue;
} else if (matchActionLine.exactMatch(line)) {
QString action = matchActionLine.cap(1);
if (action == "export")
match.action = Match::Export;
else if (action == "ignore")
match.action = Match::Ignore;
else if (action == "recurse")
match.action = Match::Recurse;
else
qFatal("Invalid action \"%s\" on line %d", qPrintable(action), lineNumber);
continue;
} else if (matchAnnotateLine.exactMatch(line)) {
match.annotate = matchAnnotateLine.cap(1) == "true";
continue;
} else if (line == "end match") {
if (!match.repository.isEmpty())
match.action = Match::Export;
m_matchRules += match;
state = ReadingNone;
continue;
}
}
bool isRepositoryRule = repoLine.exactMatch(line);
bool isMatchRule = matchLine.exactMatch(line);
bool isVariableRule = declareLine.exactMatch(line);
if (isRepositoryRule) {
// repository rule
state = ReadingRepository;
repo = Repository(); // clear
repo.name = repoLine.cap(1);
repo.lineNumber = lineNumber;
repo.filename = filename;
} else if (isMatchRule) {
// match rule
state = ReadingMatch;
match = Match();
match.rx = QRegExp(matchLine.cap(1), Qt::CaseSensitive, QRegExp::RegExp2);
if( !match.rx.isValid() )
qFatal("Malformed regular expression '%s' in file:'%s':%d, Error: %s",
qPrintable(matchLine.cap(1)), qPrintable(filename), lineNumber,
qPrintable(match.rx.errorString()));
match.lineNumber = lineNumber;
match.filename = filename;
} else if (isVariableRule) {
QString variable = declareLine.cap(1);
QString value = declareLine.cap(2);
variables.insert(variable, value);
} else {
qFatal("Malformed line in rules file: line %d: %s",
lineNumber, qPrintable(origLine));
}
}
}
#ifndef QT_NO_DEBUG_STREAM
QDebug operator<<(QDebug s, const Rules::Match &rule)
{
s.nospace() << rule.info();
return s.space();
}
#endif
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