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//
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0+
//
#include <uhd/config.hpp>
#include <uhdlib/utils/paths.hpp>
#ifdef BOOST_MSVC
# include <windows.h>
#else
# include <wordexp.h>
#endif
std::string uhd::path_expandvars(const std::string& path)
{
if (path.empty()) {
return path;
}
#ifdef BOOST_MSVC
constexpr size_t max_pathlen = 4096;
char result[max_pathlen];
const size_t result_len = ExpandEnvironmentStrings(
path.c_str(),
&result[0],
max_pathlen
);
if (result == 0) {
return path;
}
return std::string(result, result+result_len);
#else
wordexp_t p;
std::string return_value;
if (wordexp(path.c_str(), &p, 0) == 0 && p.we_wordc > 0) {
return_value = std::string(p.we_wordv[0]);
} else {
return_value = path;
}
wordfree(&p);
return return_value;
#endif
}
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