IniConfig.h

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// Copyright © 2008-2021 Pioneer Developers. See AUTHORS.txt for details
// Licensed under the terms of the GPL v3. See licenses/GPL-3.txt
 
#ifndef _INICONFIG_H
#define _INICONFIG_H
 
#include <map>
#include <string>
 
namespace FileSystem {
    class FileData;
    class FileSource;
    class FileSourceFS;
} // namespace FileSystem
 
class IniConfig {
public:
    IniConfig() = default;
 
    // Read from a file on disk. If fs is a FileSourceFS, enables in-place saving
    // of the IniConfig.
    void Read(FileSystem::FileSource &fs, const std::string &path);
 
    // Write to a file on disk.
    bool Write(FileSystem::FileSourceFS &fs, const std::string &path);
 
    // If a previous call to Read() was made using a writable file source,
    // save the IniConfig in-place to that file.
    bool Save();
 
    void SetInt(const std::string &section, const std::string &key, int val);
    void SetFloat(const std::string &section, const std::string &key, float val);
    void SetString(const std::string &section, const std::string &key, const std::string &val);
 
    int Int(const std::string &section, const std::string &key, int defval) const;
    float Float(const std::string &section, const std::string &key, float defval) const;
    std::string String(const std::string &section, const std::string &key, const std::string &defval) const;
 
    void SetInt(const std::string &key, int val) { SetInt("", key, val); }
    void SetFloat(const std::string &key, float val) { SetFloat("", key, val); }
    void SetString(const std::string &key, const std::string &val) { SetString("", key, val); }
 
    int Int(const std::string &key, int defval = 0) const { return Int("", key, defval); }
    float Float(const std::string &key, float defval = 0.0f) const { return Float("", key, defval); }
    std::string String(const std::string &key, const std::string &defval = std::string()) const { return String("", key, defval); }
 
    bool HasSection(const std::string &section) const
    {
        const auto it = m_map.find(section);
        return (it != m_map.end()) && (!it->second.empty());
    }
 
    bool HasEntry(const std::string &section, const std::string &key) const
    {
        const auto it = m_map.find(section);
        return (it != m_map.end()) && it->second.count(key);
    }
    bool HasEntry(const std::string &key) const { return HasEntry("", key); }
 
protected:
    void Read(const FileSystem::FileData &data);
 
    typedef std::map<std::string, std::string> MapType;
    typedef std::map<std::string, MapType> SectionMapType;
    SectionMapType m_map;
 
    FileSystem::FileSourceFS *m_fs = nullptr;
    std::string m_path;
};
 
#endif /* _INICONFIG_H */