DirectoryDS.h

/*
╔══════════════════════════════════════════════════════════════════════════════╗
║                       SIMPLY POWERFUL TOOLKIT (SPTK)                         ║
╟──────────────────────────────────────────────────────────────────────────────╢
║  copyright            © 1999-2022 Alexey Parshin. All rights reserved.       ║
║  email                alexeyp@gmail.com                                      ║
╚══════════════════════════════════════════════════════════════════════════════╝
┌──────────────────────────────────────────────────────────────────────────────┐
│   This library is free software; you can redistribute it and/or modify it    │
│   under the terms of the GNU Library General Public License as published by  │
│   the Free Software Foundation; either version 2 of the License, or (at your │
│   option) any later version.                                                 │
│                                                                              │
│   This library 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 Library   │
│   General Public License for more details.                                   │
│                                                                              │
│   You should have received a copy of the GNU Library General Public License  │
│   along with this library; if not, write to the Free Software Foundation,    │
│   Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.               │
│                                                                              │
│   Please report all bugs and problems to alexeyp@gmail.com.                  │
└──────────────────────────────────────────────────────────────────────────────┘
*/
 
#pragma once
 
#include <memory>
#include <sptk5/CSmallPixmapIDs.h>
#include <sptk5/MemoryDS.h>
#include <sptk5/RegularExpression.h>
#include <sptk5/Strings.h>
#include <sptk5/sptk-config.h>
#include <sys/stat.h>
 
namespace sptk {
 
static constexpr int DDS_SHOW_ALL = 0;         
static constexpr int DDS_HIDE_FILES = 1;       
static constexpr int DDS_HIDE_DOT_FILES = 2;   
static constexpr int DDS_HIDE_DIRECTORIES = 4; 
static constexpr int DDS_NO_SORT = 8;          
 
class SP_EXPORT DirectoryDS
    : public MemoryDS
{
public:
    DirectoryDS(const String& _directory = "", const String& _pattern = "", int _showPolicy = 0)
        : MemoryDS()
        , m_showPolicy(_showPolicy)
    {
        if (!_directory.empty())
        {
            directory(_directory);
        }
        if (!_pattern.empty())
        {
            pattern(_pattern);
        }
    }
 
    int showPolicy() const
    {
        return m_showPolicy;
    }
 
    void showPolicy(int type)
    {
        m_showPolicy = type;
    }
 
    void directory(const String& d);
 
    String directory() const
    {
        return m_directory;
    }
 
    void pattern(const String& wildcards)
    {
        Strings patterns(wildcards, ";", Strings::SplitMode::DELIMITER);
        m_patterns.clear();
        for (const auto& pattern: patterns)
        {
            auto matchPattern = wildcardToRegexp(pattern);
            m_patterns.push_back(matchPattern);
        }
    }
 
    bool open() override;
 
    static std::shared_ptr<RegularExpression> wildcardToRegexp(const String& wildcard);
 
protected:
    static String getFileType(const fs::directory_entry& file, CSmallPixmapType& image,
                              DateTime& modificationTime);
 
private:
    String m_directory;
 
    std::vector<std::shared_ptr<RegularExpression>> m_patterns;
 
    int m_showPolicy;
 
    static String absolutePath(const String& path);
 
    FieldList makeFileListEntry(const fs::directory_entry& file, size_t& index) const;
 
    static CSmallPixmapType imageTypeFromExtention(const String& ext);
};
} // namespace sptk