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#include "abstracteditorsupport.h"

#include "cppfilesettingspage.h"
#include "cppmodelmanager.h"

#include <utils/fileutils.h>
#include <utils/macroexpander.h>

namespace CppTools {

AbstractEditorSupport::AbstractEditorSupport(CppModelManager *modelmanager) :
    m_modelmanager(modelmanager), m_revision(1)
{
}

void AbstractEditorSupport::updateDocument()
{
    ++m_revision;
    m_modelmanager->updateSourceFiles(QSet<QString>() << fileName());
}

void AbstractEditorSupport::notifyAboutUpdatedContents() const
{
    m_modelmanager->emitAbstractEditorSupportContentsUpdated(fileName(), contents());
}

QString AbstractEditorSupport::licenseTemplate(const QString &file, const QString &className)
{
    const QString license = Internal::CppFileSettings::licenseTemplate();
    Utils::MacroExpander expander;
    expander.registerVariable("Cpp:License:FileName", tr("The file name."),
                              [file]() { return Utils::FileName::fromString(file).fileName(); });
    expander.registerVariable("Cpp:License:ClassName", tr("The class name"),
                              [className]() { return className; });

    QString out = expander.expand(license);
    // Expand \n, \t and handle line continuation:
    QString result;
    result.reserve(out.count());
    bool isEscaped = false;
    for (int i = 0; i < out.count(); ++i) {
        const QChar c = out.at(i);

        if (isEscaped) {
            if (c == QLatin1Char('n'))
                result.append(QLatin1Char('\n'));
            else if (c == QLatin1Char('t'))
                result.append(QLatin1Char('\t'));
            else if (c != QLatin1Char('\n'))
                result.append(c);
            isEscaped = false;
        } else {
            if (c == QLatin1Char('\\'))
                isEscaped = true;
            else
                result.append(c);
        }
    }
    return result;
}

} // namespace CppTools