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** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
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#include "itemreader.h"

#include "itemreadervisitorstate.h"

#include <tools/profiling.h>

#include <QtCore/qfileinfo.h>

#include <algorithm>

namespace qbs {
namespace Internal {

static void makePathsCanonical(QStringList &paths)
{
    auto it = std::remove_if(paths.begin(), paths.end(), [](QString &p) {
        p = QFileInfo(p).canonicalFilePath();
        return p.isEmpty();
    });
    auto e = paths.end();
    if (it != e)
        paths.erase(it, e);
}

ItemReader::ItemReader(Logger &logger)
    : m_visitorState(std::make_unique<ItemReaderVisitorState>(logger))
{
}

ItemReader::~ItemReader() = default;

void ItemReader::setSearchPaths(const QStringList &searchPaths)
{
    m_searchPaths = searchPaths;
    makePathsCanonical(m_searchPaths);
    m_allSearchPaths.clear();
}

void ItemReader::pushExtraSearchPaths(const QStringList &extraSearchPaths)
{
    m_extraSearchPaths.push_back(extraSearchPaths);
    makePathsCanonical(m_extraSearchPaths.back());
    m_allSearchPaths.clear();
}

void ItemReader::popExtraSearchPaths()
{
    m_extraSearchPaths.pop_back();
    m_allSearchPaths.clear();
}

std::vector<QStringList> ItemReader::extraSearchPathsStack() const
{
    return m_extraSearchPaths;
}

void ItemReader::setExtraSearchPathsStack(const std::vector<QStringList> &s)
{
    m_extraSearchPaths = s;
    m_allSearchPaths.clear();
}

void ItemReader::clearExtraSearchPathsStack()
{
    m_extraSearchPaths.clear();
    m_allSearchPaths.clear();
}

const QStringList &ItemReader::allSearchPaths() const
{
    if (m_allSearchPaths.empty()) {
        std::for_each(m_extraSearchPaths.crbegin(), m_extraSearchPaths.crend(),
                      [this] (const QStringList &paths) {
            m_allSearchPaths += paths;
        });
        m_allSearchPaths += m_searchPaths;
        m_allSearchPaths.removeDuplicates();
    }
    return m_allSearchPaths;
}

Item *ItemReader::readFile(const QString &filePath)
{
    AccumulatingTimer readFileTimer(m_elapsedTime != -1 ? &m_elapsedTime : nullptr);
    return m_visitorState->readFile(filePath, allSearchPaths(), m_pool);
}

Set<QString> ItemReader::filesRead() const
{
    return m_visitorState->filesRead();
}

void ItemReader::setEnableTiming(bool on)
{
    m_elapsedTime = on ? 0 : -1;
}

} // namespace Internal
} // namespace qbs
