diff options
Diffstat (limited to 'src/corelib/io/qfilesystementry.cpp')
| -rw-r--r-- | src/corelib/io/qfilesystementry.cpp | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/src/corelib/io/qfilesystementry.cpp b/src/corelib/io/qfilesystementry.cpp new file mode 100644 index 0000000..d4c6d0a --- /dev/null +++ b/src/corelib/io/qfilesystementry.cpp @@ -0,0 +1,383 @@ +/**************************************************************************** +** +** Copyright (C) 2010 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 "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 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(); +#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 + int length = -1; + if (m_firstDotInFileName >= 0) { + length = m_firstDotInFileName; + if (m_lastSeparator != -1) // avoid off by one + length--; + } + return m_filePath.mid(m_lastSeparator + 1, length); +} + +QString QFileSystemEntry::completeBaseName() const +{ + findFileNameSeparators(); +#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 + int length = -1; + if (m_firstDotInFileName >= 0) { + length = m_firstDotInFileName + m_lastDotInFileName; + if (m_lastSeparator != -1) // avoid off by one + length--; + } + 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; + } +} + +QT_END_NAMESPACE |