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/****************************************************************************
**
** Copyright (C) 2017 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.
**
****************************************************************************/
#pragma once
#include <utils/hostosinfo.h>
#include <utils/smallstringview.h>
#include <algorithm>
#include <vector>
namespace ClangBackEnd {
template <char WindowsSlash>
class AbstractFilePathView : public Utils::SmallStringView
{
public:
constexpr AbstractFilePathView() = default;
explicit AbstractFilePathView(const char *const string, const size_type size) noexcept
: Utils::SmallStringView(string, size),
m_slashIndex(lastSlashIndex(*this))
{
}
explicit AbstractFilePathView(Utils::SmallStringView filePath)
: Utils::SmallStringView(filePath),
m_slashIndex(lastSlashIndex(filePath))
{
}
template <typename String,
typename = std::enable_if_t<std::is_lvalue_reference<String>::value>>
explicit AbstractFilePathView(String &&filePath)
: AbstractFilePathView(filePath.data(), filePath.size())
{
}
template<size_type Size>
AbstractFilePathView(const char(&string)[Size]) noexcept
: AbstractFilePathView(string, Size - 1)
{
static_assert(Size >= 1, "Invalid string literal! Length is zero!");
}
Utils::SmallStringView toStringView() const
{
return *this;
}
std::ptrdiff_t slashIndex() const
{
return m_slashIndex;
}
Utils::SmallStringView directory() const noexcept
{
return mid(0, std::size_t(std::max(std::ptrdiff_t(0), m_slashIndex)));
}
Utils::SmallStringView name() const noexcept
{
return mid(std::size_t(m_slashIndex + 1),
std::size_t(std::ptrdiff_t(size()) - m_slashIndex - std::ptrdiff_t(1)));
}
static
std::ptrdiff_t lastSlashIndex(Utils::SmallStringView filePath)
{
constexpr char separator = Utils::HostOsInfo::isWindowsHost() ? WindowsSlash : '/';
auto foundReverse = std::find(filePath.rbegin(), filePath.rend(), separator);
auto found = foundReverse.base();
--found;
return std::distance(filePath.begin(), found);
}
friend bool operator==(const AbstractFilePathView &first, const AbstractFilePathView &second)
{
return first.toStringView() == second.toStringView();
}
private:
std::ptrdiff_t m_slashIndex = -1;
};
using FilePathView = AbstractFilePathView<'/'>;
using NativeFilePathView = AbstractFilePathView<'\\'>;
using FilePathViews = std::vector<FilePathView>;
using NativeFilePathViews = std::vector<NativeFilePathView>;
}
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