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Diffstat (limited to 'qmake/library/qmakevfs.cpp')
| -rw-r--r-- | qmake/library/qmakevfs.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/qmake/library/qmakevfs.cpp b/qmake/library/qmakevfs.cpp new file mode 100644 index 0000000000..2039387a0f --- /dev/null +++ b/qmake/library/qmakevfs.cpp @@ -0,0 +1,192 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the qmake application of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qmakevfs.h" + +#include "ioutils.h" +using namespace QMakeInternal; + +#include <qdir.h> +#include <qfile.h> +#include <qfileinfo.h> + +#define fL1S(s) QString::fromLatin1(s) + +QT_BEGIN_NAMESPACE + +QMakeVfs::QMakeVfs() +#ifndef PROEVALUATOR_FULL + : m_magicMissing(fL1S("missing")) + , m_magicExisting(fL1S("existing")) +#endif +{ +} + +bool QMakeVfs::writeFile(const QString &fn, QIODevice::OpenMode mode, const QString &contents, + QString *errStr) +{ +#ifndef PROEVALUATOR_FULL +# ifdef PROEVALUATOR_THREAD_SAFE + QMutexLocker locker(&m_mutex); +# endif + QString *cont = &m_files[fn]; + if (mode & QIODevice::Append) + *cont += contents; + else + *cont = contents; + Q_UNUSED(errStr) + return true; +#else + QFileInfo qfi(fn); + if (!QDir::current().mkpath(qfi.path())) { + *errStr = fL1S("Cannot create parent directory"); + return false; + } + QByteArray bytes = contents.toLocal8Bit(); + QFile cfile(fn); + if (!(mode & QIODevice::Append) && cfile.open(QIODevice::ReadOnly | QIODevice::Text)) { + if (cfile.readAll() == bytes) + return true; + cfile.close(); + } + if (!cfile.open(mode | QIODevice::WriteOnly | QIODevice::Text)) { + *errStr = cfile.errorString(); + return false; + } + cfile.write(bytes); + cfile.close(); + if (cfile.error() != QFile::NoError) { + *errStr = cfile.errorString(); + return false; + } + return true; +#endif +} + +bool QMakeVfs::readFile(const QString &fn, QString *contents, QString *errStr) +{ +#ifndef PROEVALUATOR_FULL +# ifdef PROEVALUATOR_THREAD_SAFE + QMutexLocker locker(&m_mutex); +# endif + QHash<QString, QString>::ConstIterator it = m_files.constFind(fn); + if (it != m_files.constEnd()) { + if (it->constData() == m_magicMissing.constData()) { + *errStr = fL1S("No such file or directory"); + return false; + } + if (it->constData() != m_magicExisting.constData()) { + *contents = *it; + return true; + } + } +#endif + + QFile file(fn); + if (!file.open(QIODevice::ReadOnly)) { +#ifndef PROEVALUATOR_FULL + if (!IoUtils::exists(fn)) { + m_files[fn] = m_magicMissing; + *errStr = fL1S("No such file or directory"); + } else +#endif + *errStr = file.errorString(); + return false; + } +#ifndef PROEVALUATOR_FULL + m_files[fn] = m_magicExisting; +#endif + + QByteArray bcont = file.readAll(); + if (bcont.startsWith("\xef\xbb\xbf")) { + // UTF-8 BOM will cause subtle errors + *errStr = fL1S("Unexpected UTF-8 BOM"); + return false; + } + *contents = QString::fromLocal8Bit(bcont); + return true; +} + +bool QMakeVfs::exists(const QString &fn) +{ +#ifndef PROEVALUATOR_FULL +# ifdef PROEVALUATOR_THREAD_SAFE + QMutexLocker locker(&m_mutex); +# endif + QHash<QString, QString>::ConstIterator it = m_files.constFind(fn); + if (it != m_files.constEnd()) + return it->constData() != m_magicMissing.constData(); +#endif + bool ex = IoUtils::exists(fn); +#ifndef PROEVALUATOR_FULL + m_files[fn] = ex ? m_magicExisting : m_magicMissing; +#endif + return ex; +} + +#ifndef PROEVALUATOR_FULL +// This should be called when the sources may have changed (e.g., VCS update). +void QMakeVfs::invalidateCache() +{ +# ifdef PROEVALUATOR_THREAD_SAFE + QMutexLocker locker(&m_mutex); +# endif + QHash<QString, QString>::Iterator it = m_files.begin(), eit = m_files.end(); + while (it != eit) { + if (it->constData() == m_magicMissing.constData() + ||it->constData() == m_magicExisting.constData()) + it = m_files.erase(it); + else + ++it; + } +} + +// This should be called when generated files may have changed (e.g., actual build). +void QMakeVfs::invalidateContents() +{ +# ifdef PROEVALUATOR_THREAD_SAFE + QMutexLocker locker(&m_mutex); +# endif + m_files.clear(); +} +#endif + +QT_END_NAMESPACE |