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//
// Copyright 2013-2014 Ettus Research LLC
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include <uhd/transport/nirio/nifpga_lvbitx.h>
#include <boost/algorithm/string.hpp>
#include <cstdlib>
#include <fstream>
#include <regex>
#include <streambuf>
#include <string>
namespace uhd { namespace niusrprio {
std::string nifpga_lvbitx::_get_bitstream_checksum(const std::string& file_path)
{
const std::regex md5_regex(
"<BitstreamMD5>([a-fA-F0-9]{32})<\\/BitstreamMD5>", std::regex::icase);
std::ifstream lvbitx_stream(file_path.c_str());
if (!lvbitx_stream.is_open()) {
return std::string();
}
std::string checksum, line;
while (std::getline(lvbitx_stream, line)) {
try {
// short-circuiting the regex search with a simple find is faster
// for cases where the tag doesn't exist
std::smatch md5_match;
if (line.find("<BitstreamMD5>") != std::string::npos
&& std::regex_search(line, md5_match, md5_regex)) {
checksum = std::string(md5_match[1].first, md5_match[1].second);
break;
}
} catch (boost::exception&) {
}
}
boost::to_upper(checksum);
return checksum;
}
}} // namespace uhd::niusrprio
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