检测重复纹理

void TextureCache::checkRepeatTexture()
{
    std::map< string, vector<string>> maps;
    for (auto it = this->_textures.begin(); it != this->_textures.end(); it++)
    {
        string key = it->first;
        TexInfo* info = it->second;
        string fileFullPath = info->Tex->getPath();
        if (!fileFullPath.empty())
        {
            if (maps.find(fileFullPath) == maps.end())
            {
                maps[fileFullPath] = { key };
            }
            else{
                // repeat texture
                maps[fileFullPath].push_back(key);
            }
        }
    }
    std::map< string, vector<string>> repeatInfo;
    for (auto map : maps)
    {
        if (map.second.size() > 1)
        {
            repeatInfo[map.first] = map.second;
        }
    }
    int size = repeatInfo.size();
    if (size > 0)
    {
        cocos2d::log("\nrepead count: %d", size);
        for (auto info : repeatInfo)
        {
            cocos2d::log("\n[%d] file:%s", info.second.size(), info.first.c_str());
            for (auto item : info.second)
            {
                cocos2d::log("-> %s", item.c_str());
            }
            cocos2d::log("\n");
        }
        cocos2d::log("\n");
    }
}
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