WingHexExplorer2/3rdparty/qcodeedit2/lib/snippets/qsnippetmanager.cpp

/****************************************************************************
**
** Copyright (C) 2006-2009 fullmetalcoder <fullmetalcoder@hotmail.fr>
**
** This file is part of the Edyuk project <http://edyuk.org>
**
** This file may be used under the terms of the GNU General Public License
** version 3 as published by the Free Software Foundation and appearing in the
** file GPL.txt included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

/*!
        \file qsnippetmanager.cpp
        \brief Implementation of the QSnippetManager class
*/

#include "qsnippetmanager.h"

#include "qsnippet_p.h"

#include <QDir>
#include <QFile>
#include <QFileInfo>
#include <QRegularExpression>
#include <QTextStream>

/*
class StubAffector : public QEditor::PlaceHolder::Affector
{
        public:
                virtual void affect(const QStringList& base, int ph, const
QKeyEvent *e, int mirror, QString& after) const
                {
                        after = after.toUpper();
                }
};
*/

/*!
        \class QSnippetManager
        \brief A class managing code snippets


*/

QSnippetManager::QSnippetManager(QObject *p) : QObject(p) {
    addPatternLoader(new QCE::Snippets::PlainText::Loader);
    addPatternLoader(new QCE::Snippets::Simple::Loader);
}

QSnippetManager::~QSnippetManager() {
    qDeleteAll(m_snippets);
    qDeleteAll(m_patternLoaders);
}

int QSnippetManager::snippetCount() const { return m_snippets.count(); }

QSnippet *QSnippetManager::snippet(int i) const {
    return i >= 0 && i < m_snippets.count() ? m_snippets.at(i) : 0;
}

void QSnippetManager::removeSnippet(int i, bool cleanup) {
    if (i < 0 || i >= m_snippets.count())
        return;

    QSnippet *snip = m_snippets.takeAt(i);

    emit snippetRemovedByIndex(i);
    emit snippetRemoved(snip);

    if (cleanup)
        delete snip;
}

void QSnippetManager::removeSnippet(QSnippet *snip) {
    int idx = m_snippets.indexOf(snip);

    if (idx == -1)
        return;

    m_snippets.removeAt(idx);

    emit snippetRemovedByIndex(idx);
    emit snippetRemoved(snip);
}

void QSnippetManager::addSnippet(QSnippet *snip) {
    if (!snip)
        return;

    m_snippets << snip;
    emit snippetAdded(snip);
}

bool QSnippetManager::loadSnippetFromString(const QString &name,
                                            const QString &s,
                                            const QString &type) {
    QSnippetPatternLoader *pl = patternLoader(type);

    QSnippet *snip = pl->loadSnippet(s);

    if (snip)
        snip->setName(name);

    addSnippet(snip);

    return snip;
}

bool QSnippetManager::loadSnippetFromFile(const QString &file,
                                          const QString &type) {
    QFile f(file);

    if (!f.open(QFile::ReadOnly | QFile::Text)) {
        qWarning("Unable to load snippet from %s", qPrintable(file));
        return false;
    }

    // qDebug("loading from : %s", qPrintable(file));

    QString s = QString::fromLocal8Bit(f.readAll());

    static const QRegularExpression meta(
        "# name:(\\S+) context:(\\S*)[^\n]*\n");

    auto match = meta.match(s);

    if (match.hasMatch()) {
        // qDebug("meta! : %i => %s", idx, qPrintable(meta.cap(0)));
        s.remove(match.capturedStart(), match.capturedLength());
    }

    if (s.endsWith('\n'))
        s.chop(1);

    bool ok = loadSnippetFromString(
        match.hasMatch() ? match.captured(1) : QFileInfo(file).baseName(), s,
        type);

    if (ok) {
        QSnippet *snip = m_snippets.last();
        snip->setContexts(match.hasMatch() ? match.captured(2).split(",")
                                           : QStringList("all"));
    }

    return ok;
}

QSnippetPatternLoader *
QSnippetManager::patternLoader(const QString &type) const {
    foreach (QSnippetPatternLoader *pl, m_patternLoaders) {
        if (pl->type() == type)
            return pl;
    }

    return nullptr;
}

void QSnippetManager::saveSnippetsToDirectory(const QString &path) {
    QDir d(path);

    foreach (QSnippet *snip, m_snippets) {
        QFile f(d.filePath(snip->name() + ".qcs"));

        if (!f.open(QFile::WriteOnly | QFile::Text))
            continue;

        QTextStream s(&f);
        s << "# name:" << snip->name()
          << " context:" << snip->contexts().join(",") << Qt::endl;
        s << snip->pattern();
    }
}

void QSnippetManager::loadSnippetsFromDirectory(const QString &path) {
    QDir d(path);

    for (auto &info : d.entryInfoList({QStringLiteral("*.qcs")},
                                      QDir::Files | QDir::Readable)) {
        loadSnippetFromFile(info.absoluteFilePath(), QStringLiteral("Simple"));
    }
}

void QSnippetManager::addPatternLoader(QSnippetPatternLoader *pl) {
    m_patternLoaders << pl;
}

void QSnippetManager::removePatternLoader(QSnippetPatternLoader *pl) {
    m_patternLoaders.removeAll(pl);
}

QString QSnippetManager::typeGuess(const QString &pattern) const {
    Q_UNUSED(pattern)

    return "Simple";
}