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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QDebug>
#include <QRegExp>
#include <QString>
#include <qtest.h>
class tst_qregexp : public QObject
{
Q_OBJECT
private slots:
void escape_old();
void escape_old_data() { escape_data(); }
void escape_new1();
void escape_new1_data() { escape_data(); }
void escape_new2();
void escape_new2_data() { escape_data(); }
void escape_new3();
void escape_new3_data() { escape_data(); }
void escape_new4();
void escape_new4_data() { escape_data(); }
private:
void escape_data();
};
static void verify(const QString "ed, const QString &expected)
{
if (quoted != expected)
qDebug() << "ERROR:" << quoted << expected;
}
void tst_qregexp::escape_data()
{
QTest::addColumn<QString>("pattern");
QTest::addColumn<QString>("expected");
QTest::newRow("escape 0") << "Hello world" << "Hello world";
QTest::newRow("escape 1") << "(Hello world)" << "\\(Hello world\\)";
{
QString s;
for (int i = 0; i < 10; ++i)
s += "(escape)";
QTest::newRow("escape 10") << s << QRegExp::escape(s);
}
{
QString s;
for (int i = 0; i < 100; ++i)
s += "(escape)";
QTest::newRow("escape 100") << s << QRegExp::escape(s);
}
}
void tst_qregexp::escape_old()
{
QFETCH(QString, pattern);
QFETCH(QString, expected);
QBENCHMARK {
static const char meta[] = "$()*+.?[\\]^{|}";
QString quoted = pattern;
int i = 0;
while (i < quoted.length()) {
if (strchr(meta, quoted.at(i).toLatin1()) != 0)
quoted.insert(i++, QLatin1Char('\\'));
++i;
}
verify(quoted, expected);
}
}
void tst_qregexp::escape_new1()
{
QFETCH(QString, pattern);
QFETCH(QString, expected);
QBENCHMARK {
QString quoted;
const int count = pattern.count();
quoted.reserve(count * 2);
const QLatin1Char backslash('\\');
for (int i = 0; i < count; i++) {
switch (pattern.at(i).toLatin1()) {
case '$':
case '(':
case ')':
case '*':
case '+':
case '.':
case '?':
case '[':
case '\\':
case ']':
case '^':
case '{':
case '|':
case '}':
quoted.append(backslash);
}
quoted.append(pattern.at(i));
}
verify(quoted, expected);
}
}
void tst_qregexp::escape_new2()
{
QFETCH(QString, pattern);
QFETCH(QString, expected);
QBENCHMARK {
int count = pattern.count();
const QLatin1Char backslash('\\');
QString quoted(count * 2, backslash);
const QChar *patternData = pattern.data();
QChar *quotedData = quoted.data();
int escaped = 0;
for ( ; --count >= 0; ++patternData) {
const QChar c = *patternData;
switch (c.unicode()) {
case '$':
case '(':
case ')':
case '*':
case '+':
case '.':
case '?':
case '[':
case '\\':
case ']':
case '^':
case '{':
case '|':
case '}':
++escaped;
++quotedData;
}
*quotedData = c;
++quotedData;
}
quoted.resize(pattern.size() + escaped);
verify(quoted, expected);
}
}
void tst_qregexp::escape_new3()
{
QFETCH(QString, pattern);
QFETCH(QString, expected);
QBENCHMARK {
QString quoted;
const int count = pattern.count();
quoted.reserve(count * 2);
const QLatin1Char backslash('\\');
for (int i = 0; i < count; i++) {
switch (pattern.at(i).toLatin1()) {
case '$':
case '(':
case ')':
case '*':
case '+':
case '.':
case '?':
case '[':
case '\\':
case ']':
case '^':
case '{':
case '|':
case '}':
quoted += backslash;
}
quoted += pattern.at(i);
}
verify(quoted, expected);
}
}
static inline bool needsEscaping(int c)
{
switch (c) {
case '$':
case '(':
case ')':
case '*':
case '+':
case '.':
case '?':
case '[':
case '\\':
case ']':
case '^':
case '{':
case '|':
case '}':
return true;
}
return false;
}
void tst_qregexp::escape_new4()
{
QFETCH(QString, pattern);
QFETCH(QString, expected);
QBENCHMARK {
const int n = pattern.size();
const QChar *patternData = pattern.data();
// try to prevent copy if no escape is needed
int i = 0;
for (int i = 0; i != n; ++i) {
const QChar c = patternData[i];
if (needsEscaping(c.unicode()))
break;
}
if (i == n) {
verify(pattern, expected);
// no escaping needed, "return pattern" should be done here.
return;
}
const QLatin1Char backslash('\\');
QString quoted(n * 2, backslash);
QChar *quotedData = quoted.data();
for (int j = 0; j != i; ++j)
*quotedData++ = *patternData++;
int escaped = 0;
for (; i != n; ++i) {
const QChar c = *patternData;
if (needsEscaping(c.unicode())) {
++escaped;
++quotedData;
}
*quotedData = c;
++quotedData;
++patternData;
}
quoted.resize(n + escaped);
verify(quoted, expected);
// "return quoted"
}
}
QTEST_MAIN(tst_qregexp)
#include "main.moc"
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