gcs-nf/opmap/core/cache.cpp

/**
 ******************************************************************************
 *
 * @file       cache.cpp
 * @author     The OpenPilot Team, http://www.openpilot.org Copyright (C) 2012.
 * @brief
 * @see        The GNU Public License (GPL) Version 3
 * @defgroup   OPMapWidget
 * @{
 *
 *****************************************************************************/
/*
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
 * for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include "cache.h"
//#include "utils/pathutils.h"
#include <QSettings>

namespace core {
Cache *Cache::m_pInstance = 0;

Cache *Cache::Instance()
{
    if (!m_pInstance) {
        m_pInstance = new Cache;
    }
    return m_pInstance;
}

void Cache::setCacheLocation(const QString & value)
{
    cache          = value;
    routeCache     = cache + "RouteCache" + QDir::separator();
    geoCache       = cache + "GeocoderCache" + QDir::separator();
    placemarkCache = cache + "PlacemarkCache" + QDir::separator();
    ImageCache.setGtileCache(value);
#ifdef DEBUG_GetGeocoderFromCache
    qDebug() << cache;
#endif
}
QString Cache::CacheLocation()
{
    return cache;
}
Cache::Cache()//修改地址
{
    if (cache.isNull() | cache.isEmpty()) {
        cache = QDir::currentPath() + QDir::separator() + "maps" + QDir::separator();
#ifdef DEBUG_GetGeocoderFromCache
    qDebug() << cache;
#endif
        setCacheLocation(cache);
    }
}
QString Cache::GetGeocoderFromCache(const QString &urlEnd)
{
#ifdef DEBUG_GetGeocoderFromCache
    qDebug() << "Entered GetGeocoderFromCache";
#endif
    QString ret = QString::null;
    QString filename = geoCache + QString(urlEnd) + ".geo";
#ifdef DEBUG_GetGeocoderFromCache
    qDebug() << "GetGeocoderFromCache: Does file exist?:" << filename;
#endif
    QFileInfo File(filename);
    if (File.exists()) {
#ifdef DEBUG_GetGeocoderFromCache
        qDebug() << "GetGeocoderFromCache:File exists!!";
#endif
        QFile file(filename);
        if (file.open(QIODevice::ReadOnly)) {
            QTextStream stream(&file);
            stream.setCodec("UTF-8");
            stream >> ret;
        }
    }
#ifdef DEBUG_GetGeocoderFromCache
    qDebug() << "GetGeocoderFromCache:Returning:" << ret;
#endif
    return ret;
}
void Cache::CacheGeocoder(const QString &urlEnd, const QString &content)
{
    QString ret = QString::null;
    QString filename = geoCache + QString(urlEnd) + ".geo";

#ifdef DEBUG_CACHE
    qDebug() << "CacheGeocoder: Filename:" << filename;
#endif // DEBUG_CACHE
    QFileInfo File(filename);
    QDir dir     = File.absoluteDir();
    QString path = dir.absolutePath();
#ifdef DEBUG_CACHE
    qDebug() << "CacheGeocoder: Path:" << path;
#endif // DEBUG_CACHE
    if (!dir.exists()) {
#ifdef DEBUG_CACHE
        qDebug() << "CacheGeocoder: Cache path doesn't exist, try to create";
#endif // DEBUG_CACHE
        if (!dir.mkpath(path)) {
#ifdef DEBUG_CACHE
            qDebug() << "GetGeocoderFromCache: Could not create path";
#endif // DEBUG_CACHE
        }
    }
#ifdef DEBUG_CACHE
    qDebug() << "CacheGeocoder: OpenFile:" << filename;
#endif // DEBUG_CACHE
    QFile file(filename);
    if (file.open(QIODevice::WriteOnly)) {
#ifdef DEBUG_CACHE
        qDebug() << "CacheGeocoder: File Opened!!!:" << filename;
#endif // DEBUG_CACHE
        QTextStream stream(&file);
        stream.setCodec("UTF-8");
        stream << content;
    }
}
QString Cache::GetPlacemarkFromCache(const QString &urlEnd)
{
#ifdef DEBUG_CACHE
    qDebug() << "Entered GetPlacemarkFromCache";
#endif // DEBUG_CACHE
    QString ret = QString::null;
    QString filename = placemarkCache + QString(urlEnd) + ".plc";
#ifdef DEBUG_CACHE
    qDebug() << "GetPlacemarkFromCache: Does file exist?:" << filename;
#endif // DEBUG_CACHE
    QFileInfo File(filename);
    if (File.exists()) {
#ifdef DEBUG_CACHE
        qDebug() << "GetPlacemarkFromCache:File exists!!";
#endif // DEBUG_CACHE
        QFile file(filename);
        if (file.open(QIODevice::ReadOnly)) {
            QTextStream stream(&file);
            stream.setCodec("UTF-8");
            stream >> ret;
        }
    }
#ifdef DEBUG_CACHE
    qDebug() << "GetPlacemarkFromCache:Returning:" << ret;
#endif // DEBUG_CACHE
    return ret;
}
void Cache::CachePlacemark(const QString &urlEnd, const QString &content)
{
    QString ret = QString::null;
    QString filename = placemarkCache + QString(urlEnd) + ".plc";

#ifdef DEBUG_CACHE
    qDebug() << "CachePlacemark: Filename:" << filename;
#endif // DEBUG_CACHE
    QFileInfo File(filename);;
    QDir dir     = File.absoluteDir();
    QString path = dir.absolutePath();
#ifdef DEBUG_CACHE
    qDebug() << "CachePlacemark: Path:" << path;
#endif // DEBUG_CACHE
    if (!dir.exists()) {
#ifdef DEBUG_CACHE
        qDebug() << "CachePlacemark: Cache path doesn't exist, try to create";
#endif // DEBUG_CACHE
        if (!dir.mkpath(path)) {
#ifdef DEBUG_CACHE
            qDebug() << "CachePlacemark: Could not create path";
#endif // DEBUG_CACHE
        }
    }
#ifdef DEBUG_CACHE
    qDebug() << "CachePlacemark: OpenFile:" << filename;
#endif // DEBUG_CACHE
    QFile file(filename);
    if (file.open(QIODevice::WriteOnly)) {
#ifdef DEBUG_CACHE
        qDebug() << "CachePlacemark: File Opened!!!:" << filename;
#endif // DEBUG_CACHE
        QTextStream stream(&file);
        stream.setCodec("UTF-8");
        stream << content;
    }
}
}