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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qfilesystementry_p.h"
#include <QtCore/qdir.h>
#include <QtCore/qfile.h>
#include <QtCore/private/qfsfileengine_p.h>
#ifdef Q_OS_WIN
#include <QtCore/qstringbuilder.h>
#endif
QT_BEGIN_NAMESPACE
#ifdef Q_OS_WIN
static bool isUncRoot(const QString &server)
{
QString localPath = QDir::toNativeSeparators(server);
if (!localPath.startsWith(QLatin1String("\\\\")))
return false;
int idx = localPath.indexOf(QLatin1Char('\\'), 2);
if (idx == -1 || idx + 1 == localPath.length())
return true;
localPath = localPath.right(localPath.length() - idx - 1).trimmed();
return localPath.isEmpty();
}
static inline QString fixIfRelativeUncPath(const QString &path)
{
QString currentPath = QDir::currentPath();
if (currentPath.startsWith(QLatin1String("//")))
return currentPath % QChar(QLatin1Char('/')) % path;
return path;
}
#endif
QFileSystemEntry::QFileSystemEntry()
: m_lastSeparator(0),
m_firstDotInFileName(0),
m_lastDotInFileName(0)
{
}
/*!
\internal
Use this constructor when the path is supplied by user code, as it may contain a mix
of '/' and the native separator.
*/
QFileSystemEntry::QFileSystemEntry(const QString &filePath)
: m_filePath(QDir::fromNativeSeparators(filePath)),
m_lastSeparator(-2),
m_firstDotInFileName(-2),
m_lastDotInFileName(0)
{
}
/*!
\internal
Use this constructor when the path is guaranteed to be in internal format, i.e. all
directory separators are '/' and not the native separator.
*/
QFileSystemEntry::QFileSystemEntry(const QString &filePath, FromInternalPath /* dummy */)
: m_filePath(filePath),
m_lastSeparator(-2),
m_firstDotInFileName(-2),
m_lastDotInFileName(0)
{
}
/*!
\internal
Use this constructor when the path comes from a native API
*/
QFileSystemEntry::QFileSystemEntry(const NativePath &nativeFilePath, FromNativePath /* dummy */)
: m_nativeFilePath(nativeFilePath),
m_lastSeparator(-2),
m_firstDotInFileName(-2),
m_lastDotInFileName(0)
{
}
QFileSystemEntry::QFileSystemEntry(const QString &filePath, const NativePath &nativeFilePath)
: m_filePath(QDir::fromNativeSeparators(filePath)),
m_nativeFilePath(nativeFilePath),
m_lastSeparator(-2),
m_firstDotInFileName(-2),
m_lastDotInFileName(0)
{
}
QString QFileSystemEntry::filePath() const
{
resolveFilePath();
return m_filePath;
}
QFileSystemEntry::NativePath QFileSystemEntry::nativeFilePath() const
{
resolveNativeFilePath();
return m_nativeFilePath;
}
void QFileSystemEntry::resolveFilePath() const
{
if (m_filePath.isEmpty() && !m_nativeFilePath.isEmpty()) {
#if defined(QFILESYSTEMENTRY_NATIVE_PATH_IS_UTF16)
m_filePath = QDir::fromNativeSeparators(m_nativeFilePath);
#ifdef Q_OS_WIN
if (m_filePath.startsWith(QLatin1String("//?/UNC/")))
m_filePath = m_filePath.remove(2,6);
if (m_filePath.startsWith(QLatin1String("//?/")))
m_filePath = m_filePath.remove(0,4);
#endif
#else
m_filePath = QDir::fromNativeSeparators(QFile::decodeName(m_nativeFilePath));
#endif
}
}
void QFileSystemEntry::resolveNativeFilePath() const
{
if (!m_filePath.isEmpty() && m_nativeFilePath.isEmpty()) {
#ifdef Q_OS_WIN
QString filePath = m_filePath;
if (isRelative())
filePath = fixIfRelativeUncPath(m_filePath);
m_nativeFilePath = QFSFileEnginePrivate::longFileName(QDir::toNativeSeparators(filePath));
#elif defined(QFILESYSTEMENTRY_NATIVE_PATH_IS_UTF16)
m_nativeFilePath = QDir::toNativeSeparators(m_filePath);
#else
m_nativeFilePath = QFile::encodeName(QDir::toNativeSeparators(m_filePath));
#endif
}
}
QString QFileSystemEntry::fileName() const
{
findLastSeparator();
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
if (m_lastSeparator == -1 && m_filePath.length() >= 2 && m_filePath.at(1) == QLatin1Char(':'))
return m_filePath.mid(2);
#endif
return m_filePath.mid(m_lastSeparator + 1);
}
QString QFileSystemEntry::path() const
{
findLastSeparator();
if (m_lastSeparator == -1) {
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
if (m_filePath.length() >= 2 && m_filePath.at(1) == QLatin1Char(':'))
return QFSFileEngine::currentPath(m_filePath.left(2));
#endif
return QString(QLatin1Char('.'));
}
if (m_lastSeparator == 0)
return QString(QLatin1Char('/'));
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
if (m_lastSeparator == 2 && m_filePath.at(1) == QLatin1Char(':'))
return m_filePath.left(m_lastSeparator + 1);
#endif
return m_filePath.left(m_lastSeparator);
}
QString QFileSystemEntry::baseName() const
{
findFileNameSeparators();
int length = -1;
if (m_firstDotInFileName >= 0) {
length = m_firstDotInFileName;
if (m_lastSeparator != -1) // avoid off by one
length--;
}
#if defined(Q_OS_WIN)
if (m_lastSeparator == -1 && m_filePath.length() >= 2 && m_filePath.at(1) == QLatin1Char(':'))
return m_filePath.mid(2, length - 2);
#endif
return m_filePath.mid(m_lastSeparator + 1, length);
}
QString QFileSystemEntry::completeBaseName() const
{
findFileNameSeparators();
int length = -1;
if (m_firstDotInFileName >= 0) {
length = m_firstDotInFileName + m_lastDotInFileName;
if (m_lastSeparator != -1) // avoid off by one
length--;
}
#if defined(Q_OS_WIN)
if (m_lastSeparator == -1 && m_filePath.length() >= 2 && m_filePath.at(1) == QLatin1Char(':'))
return m_filePath.mid(2, length - 2);
#endif
return m_filePath.mid(m_lastSeparator + 1, length);
}
QString QFileSystemEntry::suffix() const
{
findFileNameSeparators();
if (m_lastDotInFileName == -1)
return QString();
return m_filePath.mid(qMax((qint16)0, m_lastSeparator) + m_firstDotInFileName + m_lastDotInFileName + 1);
}
QString QFileSystemEntry::completeSuffix() const
{
findFileNameSeparators();
if (m_firstDotInFileName == -1)
return QString();
return m_filePath.mid(qMax((qint16)0, m_lastSeparator) + m_firstDotInFileName + 1);
}
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
bool QFileSystemEntry::isRelative() const
{
resolveFilePath();
return (m_filePath.isEmpty() || (!m_filePath.isEmpty() && (m_filePath[0].unicode() != '/')
&& (!(m_filePath.length() >= 2 && m_filePath[1].unicode() == ':'))));
}
bool QFileSystemEntry::isAbsolute() const
{
resolveFilePath();
return (!m_filePath.isEmpty() && ((m_filePath.length() >= 3
&& (m_filePath[0].isLetter() && m_filePath[1].unicode() == ':' && m_filePath[2].unicode() == '/'))
#ifdef Q_OS_WIN
|| (m_filePath.length() >= 2 && (m_filePath.at(0) == QLatin1Char('/') && m_filePath.at(1) == QLatin1Char('/')))
#endif
));
}
#else
bool QFileSystemEntry::isRelative() const
{
return !isAbsolute();
}
bool QFileSystemEntry::isAbsolute() const
{
resolveFilePath();
return (!m_filePath.isEmpty() && (m_filePath[0].unicode() == '/'));
}
#endif
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
bool QFileSystemEntry::isDriveRoot() const
{
resolveFilePath();
return (m_filePath.length() == 3
&& m_filePath.at(0).isLetter() && m_filePath.at(1) == QLatin1Char(':')
&& m_filePath.at(2) == QLatin1Char('/'));
}
#endif
bool QFileSystemEntry::isRoot() const
{
resolveFilePath();
if (m_filePath == QLatin1String("/")
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
|| isDriveRoot()
#if defined(Q_OS_WIN)
|| isUncRoot(m_filePath)
#endif
#endif
)
return true;
return false;
}
bool QFileSystemEntry::isEmpty() const
{
resolveNativeFilePath();
return m_nativeFilePath.isEmpty();
}
// private methods
void QFileSystemEntry::findLastSeparator() const
{
if (m_lastSeparator == -2) {
resolveFilePath();
m_lastSeparator = -1;
for (int i = m_filePath.size() - 1; i >= 0; --i) {
if (m_filePath[i].unicode() == '/') {
m_lastSeparator = i;
break;
}
}
}
}
void QFileSystemEntry::findFileNameSeparators() const
{
if (m_firstDotInFileName == -2) {
resolveFilePath();
int firstDotInFileName = -1;
int lastDotInFileName = -1;
int lastSeparator = m_lastSeparator;
int stop;
if (lastSeparator < 0) {
lastSeparator = -1;
stop = 0;
} else {
stop = lastSeparator;
}
int i = m_filePath.size() - 1;
for (; i >= stop; --i) {
if (m_filePath[i].unicode() == '.') {
firstDotInFileName = lastDotInFileName = i;
break;
} else if (m_filePath[i].unicode() == '/') {
lastSeparator = i;
break;
}
}
if (lastSeparator != i) {
for (--i; i >= stop; --i) {
if (m_filePath[i].unicode() == '.')
firstDotInFileName = i;
else if (m_filePath[i].unicode() == '/') {
lastSeparator = i;
break;
}
}
}
m_lastSeparator = lastSeparator;
m_firstDotInFileName = firstDotInFileName == -1 ? -1 : firstDotInFileName - qMax(0, lastSeparator);
if (lastDotInFileName == -1)
m_lastDotInFileName = -1;
else if (firstDotInFileName == lastDotInFileName)
m_lastDotInFileName = 0;
else
m_lastDotInFileName = lastDotInFileName - firstDotInFileName;
}
}
bool QFileSystemEntry::isClean() const
{
resolveFilePath();
int dots = 0;
bool dotok = true; // checking for ".." or "." starts to relative paths
bool slashok = true;
for (QString::const_iterator iter = m_filePath.constBegin(); iter != m_filePath.constEnd(); iter++) {
if (*iter == QLatin1Char('/')) {
if (dots == 1 || dots == 2)
return false; // path contains "./" or "../"
if (!slashok)
return false; // path contains "//"
dots = 0;
dotok = true;
slashok = false;
} else if (dotok) {
slashok = true;
if (*iter == QLatin1Char('.')) {
dots++;
if (dots > 2)
dotok = false;
} else {
//path element contains a character other than '.', it's clean
dots = 0;
dotok = false;
}
}
}
return (dots != 1 && dots != 2); // clean if path doesn't end in . or ..
}
QT_END_NAMESPACE
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