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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "clangfilesystemwatcher.h"
#include "clangdocuments.h"
#include <utf8stringvector.h>
#include <QFileInfo>
#include <QStringList>
#include <algorithm>
#include <iterator>
namespace ClangBackEnd {
namespace {
QStringList toStringList(const QSet<Utf8String> &files)
{
QStringList resultList;
resultList.reserve(files.size());
std::copy(files.cbegin(), files.cend(), std::back_inserter(resultList));
return resultList;
}
QStringList filterExistingFiles(QStringList &&filePaths)
{
auto fileExists = [] (const QString &filePath) {
return QFileInfo::exists(filePath);
};
auto startOfNonExistingFilePaths = std::partition(filePaths.begin(),
filePaths.end(),
fileExists);
filePaths.erase(startOfNonExistingFilePaths, filePaths.end());
return std::move(filePaths);
}
}
ClangFileSystemWatcher::ClangFileSystemWatcher(Documents &documents)
: documents(documents)
{
connect(&watcher,
&QFileSystemWatcher::fileChanged,
this,
&ClangFileSystemWatcher::updateDocumentsWithChangedDependencies);
}
void ClangFileSystemWatcher::addFiles(const QSet<Utf8String> &filePaths)
{
const auto existingFiles = filterExistingFiles(toStringList(filePaths));
if (!existingFiles.isEmpty())
watcher.addPaths(existingFiles);
}
void ClangFileSystemWatcher::updateDocumentsWithChangedDependencies(const QString &filePath)
{
documents.updateDocumentsWithChangedDependency(filePath);
emit fileChanged(filePath);
}
} // namespace ClangBackEnd
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