qt-creator/src/libs/clangbackendipc/filepath.h

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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#pragma once

#include "clangbackendipc_global.h"

#include <utils/smallstringio.h>

#include <QDataStream>

namespace ClangBackEnd {

class FilePath
{
public:
    FilePath() = default;
    explicit FilePath(Utils::PathString &&filePath)
        : m_path(std::move(filePath))
    {
        auto foundReverse = std::find(m_path.rbegin(), m_path.rend(), '/');
        auto found = foundReverse.base();
        --found;

        m_slashIndex = std::size_t(std::distance(m_path.begin(), found));
    }

    explicit FilePath(const Utils::PathString &filePath)
        : FilePath(filePath.clone())
    {
    }

    explicit FilePath(Utils::PathString &&filePath, std::size_t slashIndex)
        : m_path(std::move(filePath)),
          m_slashIndex(slashIndex)
    {
    }

    explicit FilePath(const QString &filePath)
        : FilePath(Utils::PathString(filePath))
    {
    }

    FilePath(const Utils::PathString &directory, const Utils::PathString &name)
        : m_path({std::move(directory), "/", std::move(name)}),
          m_slashIndex(directory.size())
    {}

    Utils::SmallStringView directory() const
    {
        return m_path.mid(0, m_slashIndex);
    }

    Utils::SmallStringView name() const
    {
        return m_path.mid(m_slashIndex + 1, m_path.size() - m_slashIndex - 1);
    }

    const Utils::PathString &path()  const
    {
        return m_path;
    }

    friend QDataStream &operator<<(QDataStream &out, const FilePath &filePath)
    {
        out << filePath.m_path;
        out << uint(filePath.m_slashIndex);

        return out;
    }

    friend QDataStream &operator>>(QDataStream &in, FilePath &filePath)
    {
        uint slashIndex;

        in >> filePath.m_path;
        in >> slashIndex;

        filePath.m_slashIndex = slashIndex;

        return in;
    }

    friend std::ostream &operator<<(std::ostream &out, const FilePath &filePath)
    {
        out << filePath.directory() << "/" << filePath.name();

        return out;
    }

    friend bool operator==(const FilePath &first, const FilePath &second)
    {
        return first.m_path == second.m_path;
    }

    friend bool operator<(const FilePath &first, const FilePath &second)
    {
        return first.m_path < second.m_path;
    }

    FilePath clone() const
    {
        return *this;
    }

private:
    Utils::PathString m_path = "/";
    std::size_t m_slashIndex = 0;
};

CMBIPC_EXPORT QDebug operator<<(QDebug debug, const FilePath &filePath);

} // namespace ClangBackEnd