#include <algorithm>
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#include <array>
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#include <cassert>
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#include <fstream>
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#include <iostream>
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#include <memory>
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#include <numeric>
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#include <regex>
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#include <string>
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#include <vector>
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std::string escape_arg(const std::string& arg) {
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if (arg.empty() == false &&
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arg.find_first_of(" \t\n\v\"") == arg.npos) {
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return arg;
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}
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std::string escaped;
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escaped.push_back('"');
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for (auto it = arg.begin(); ; ++it) {
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int num_backslashes = 0;
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while (it != arg.end() && *it == '\\') {
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++it;
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++num_backslashes;
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}
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if (it == arg.end()) {
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escaped.append(num_backslashes * 2, '\\');
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break;
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} else if (*it == '"') {
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escaped.append(num_backslashes * 2 + 1, '\\');
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escaped.push_back(*it);
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} else {
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escaped.append(num_backslashes, '\\');
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escaped.push_back(*it);
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}
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}
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escaped.push_back('"');
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return escaped;
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}
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void create_empty_file(std::string const& path) {
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std::ofstream ofs(path);
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ofs << '\n';
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}
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const std::string separator = "--sep--";
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const std::string logfile_prefix = "--log-file=";
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bool starts_with(std::string const& str, std::string const& pref) {
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return str.find(pref) == 0;
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}
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int parse_log_file_arg(std::string const& arg) {
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assert(starts_with(arg, logfile_prefix) && "Attempting to parse incorrect arg!");
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auto fname = arg.substr(logfile_prefix.size());
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create_empty_file(fname);
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std::regex regex("MemoryChecker\\.(\\d+)\\.log", std::regex::icase);
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std::smatch match;
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if (std::regex_search(fname, match, regex)) {
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return std::stoi(match[1]);
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} else {
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throw std::domain_error("Couldn't find desired expression in string: " + fname);
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}
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}
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std::string catch_path(std::string path) {
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auto start = path.find("catch");
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// try capitalized instead
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if (start == std::string::npos) {
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start = path.find("Catch");
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}
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if (start == std::string::npos) {
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throw std::domain_error("Couldn't find Catch's base path");
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}
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auto end = path.find_first_of("\\/", start);
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return path.substr(0, end);
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}
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std::string windowsify_path(std::string path) {
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for (auto& c : path) {
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if (c == '/') {
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c = '\\';
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}
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}
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return path;
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}
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void exec_cmd(std::string const& cmd, int log_num, std::string const& path) {
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std::array<char, 128> buffer;
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#if defined(_WIN32)
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// cmd has already been escaped outside this function.
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auto real_cmd = "OpenCppCoverage --export_type binary:cov-report" + std::to_string(log_num)
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+ ".bin --quiet " + "--sources " + escape_arg(path) + " --cover_children -- " + cmd;
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std::cout << "=== Marker ===: Cmd: " << real_cmd << '\n';
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std::shared_ptr<FILE> pipe(_popen(real_cmd.c_str(), "r"), _pclose);
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#else // Just for testing, in the real world we will always work under WIN32
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(void)log_num; (void)path;
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std::shared_ptr<FILE> pipe(popen(cmd.c_str(), "r"), pclose);
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#endif
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if (!pipe) {
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throw std::runtime_error("popen() failed!");
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}
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while (!feof(pipe.get())) {
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if (fgets(buffer.data(), 128, pipe.get()) != nullptr) {
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std::cout << buffer.data();
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}
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}
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}
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// argv should be:
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// [0]: our path
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// [1]: "--log-file=<path>"
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// [2]: "--sep--"
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// [3]+: the actual command
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int main(int argc, char** argv) {
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std::vector<std::string> args(argv, argv + argc);
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auto sep = std::find(begin(args), end(args), separator);
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assert(sep - begin(args) == 2 && "Structure differs from expected!");
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auto num = parse_log_file_arg(args[1]);
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auto cmdline = std::accumulate(++sep, end(args), std::string{}, [] (const std::string& lhs, const std::string& rhs) {
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return lhs + ' ' + escape_arg(rhs);
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});
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try {
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return exec_cmd(cmdline, num, windowsify_path(catch_path(args[0])));
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} catch (std::exception const& ex) {
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std::cerr << "Helper failed with: '" << ex.what() << "'\n";
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return 12;
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}
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}
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