179 lines
3.5 KiB
C++
179 lines
3.5 KiB
C++
/* Public Domain / CC-0
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* Author: tastytea <tastytea@tastytea.de>
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*/
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#ifndef XDGCFG_HPP
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#define XDGCFG_HPP
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#if __cplusplus >= 201703L
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#include <filesystem>
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#else
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#include <experimental/filesystem>
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#endif
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#include <string>
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#include <iostream>
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#include <cstdint>
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#include <libconfig.h++>
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#include <basedir.h>
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#if __cplusplus >= 201703L
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namespace fs = std::filesystem;
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#else
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namespace fs = std::experimental::filesystem;
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#endif
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using std::string;
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using std::uint_fast8_t;
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using std::cerr;
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using std::endl;
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class xdgcfg
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{
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public:
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/*!
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* @brief Checks if subdir is present, creates it if necessary
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*
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* Example:
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* @code
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* xdgcfg config("test.cfg", "subdirectory");
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* @endcode
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*
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* @param filename The name of the file, including extension
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* @param subdir The subdir (optional)
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*/
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explicit xdgcfg(const string &filename, const string &subdir = "")
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: _cfg()
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, _verbose(false)
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{
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xdgHandle xdg;
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xdgInitHandle(&xdg);
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_filepath = xdgConfigHome(&xdg);
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xdgWipeHandle(&xdg);
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if (!subdir.empty())
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{
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_filepath /= subdir;
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}
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if (!fs::exists(_filepath))
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{
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fs::create_directories(_filepath);
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}
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_filepath /= filename;
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}
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/*!
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* @brief Read the file
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*
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* @return 0 on success, 1 on I/O error, 2 on parse error.
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*/
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uint_fast8_t read()
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{
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try
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{
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_cfg.readFile(_filepath.c_str());
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}
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catch (const libconfig::FileIOException &e)
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{
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if (_verbose)
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{
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cerr << "I/O error while reading " << _filepath
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<< " - " << e.what() << endl;
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}
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return 1;
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}
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catch (const libconfig::ParseException &e)
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{
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if (_verbose)
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{
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cerr << "Parse error at " << e.getFile() << ":" << e.getLine()
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<< " - " << e.getError() << endl;
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}
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return 2;
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}
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return 0;
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}
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/*!
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* @brief Write the file
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*
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* @return `true` on success
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*/
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bool write()
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{
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try
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{
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_cfg.writeFile(_filepath.c_str());
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}
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catch (const libconfig::FileIOException &e)
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{
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if (_verbose)
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{
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cerr << "I/O error while writing " << _filepath
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<< " - " << e.what() << endl;
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}
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return false;
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}
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return true;
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}
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/*!
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* @brief Returns a reference to the config as libconfig::Config
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*
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* Example:
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* @code
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* libconfig::Config &cfg = config.get_cfg();
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* @endcode
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*/
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libconfig::Config &get_cfg()
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{
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return _cfg;
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}
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/*!
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* @brief Returns the complete filepath
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*/
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const fs::path get_filepath() const
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{
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return _filepath;
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}
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/*!
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* @brief Sets verbosity
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*/
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void set_verbose(bool verbose)
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{
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_verbose = verbose;
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}
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/*!
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* @brief Returns verbosity
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*/
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bool get_verbose() const
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{
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return _verbose;
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}
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private:
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/*!
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* Holds the contents of the CFG file
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*/
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libconfig::Config _cfg;
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/*!
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* Complete filepath
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*/
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fs::path _filepath;
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/*!
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* Print out error messages if true
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*/
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bool _verbose;
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};
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/*!
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* @example example.cpp
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*/
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#endif // XDGCFG_HPP
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