paths.hpp

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//
// Copyright 2011-2012,2015 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
 
#pragma once
 
#include <uhd/config.hpp>
#include <filesystem>
#include <string>
#include <vector>
 
namespace uhd {

//
// This is a directory where temporary files can be written. The path is
// chosen as follows:
// - If the UHD_TMP_PATH environment variable is set, its value is returned.
// - Otherwise, OS-specific defaults are used to determine the temporary
//   directory.
UHD_API std::string get_tmp_path(void);

//
// This is the path to the directory containing the UHD library (e.g.,
// libuhd.so or uhd.dll).
UHD_API std::string get_lib_path(void);

//
// This path is typically identical with the installation prefix, but can be
// overridden with the UHD_PKG_PATH environment variable.
//
// This path is "calculated" by identifying the path to the UHD library and
// returning the parent directory of the library path.
UHD_API std::string get_pkg_path(void);
 

//
// This path is typically identical with get_pkg_path()/share/uhd, but can be
// overridden with the UHD_PKG_DATA_PATH environment variable.
//
// This path is where UHD stores data files that are not part of the library
// itself, such as images, RFNoC YAML files, and calibration data.
UHD_API std::string get_pkg_data_path(void);

UHD_API std::string get_cal_data_path(void);

//
// This is a list of paths UHD will use to find additional modules to load at
// runtime.
UHD_API std::vector<std::filesystem::path> get_module_paths(void);

UHD_API std::string get_images_dir(const std::string& search_paths);

UHD_API std::string find_image_path(
    const std::string& image_name, const std::string& search_paths = "");

UHD_API std::string find_utility(const std::string& name);

UHD_API std::string print_utility_error(
    const std::string& name, const std::string& args = "");
} // namespace uhd