for (auto it = rules.rbegin(); it != rules.rend(); ++it) {

if (std::regex_match(std::begin(name), std::end(name), it->first)) {

return it->second;

}

}

return dflt;

if (v == "trace") return Log::Level::trace;

if (v == "debug") return Log::Level::debug;

if (v == "info") return Log::Level::info;

if (v == "warning") return Log::Level::warning;

if (v == "error") return Log::Level::error;

if (v == "critical") return Log::Level::critical;

return Log::Level::no_logs;

std::vector<std::string> problems;

if (auto levels = getEnvOr(envVar, nullptr)) {

// expect comma-separated <glob pattern>:<log severity>

std::regex comma{","};

std::regex levelAssignment{

R"((?:([*./\w]+)|(?:out:(binary|text|console))):()" LEVEL_REGEX_PATTERN ")"};

std::cregex_token_iterator begin{levels, levels + strlen(levels), comma, -1};

std::cregex_token_iterator end{};

for (auto it = begin; it != end; ++it) {

std::cmatch match;

if (std::regex_match(it->first, it->second, match, levelAssignment)) {

auto level = matchToLevel(match[3]);

if (match[1].matched) {

auto pattern = match[1].str();

// replace all "*" with ".*" and all "." with "\.", turning the glob pattern into a regex

std::string::size_type pos = 0;

while ((pos = pattern.find_first_of("*.", pos)) != std::string::npos) {

pattern.insert(pos, (pattern[pos] == '*') ? "." : "\\");

pos += 2;

}

sourceRules.emplace_back(pattern, level);

} else {

auto out = matchToView(match[2]);

if (out == "binary") {

binary.level = level;

} else if (out == "text") {

text.level = level;

} else if (out == "console") {

console.level = level;

}

}

} else {

problems.emplace_back("Malformed log level rule: " + it->str());

}

}

}

return problems;

// as we are configuring logging right now, we collect problems and log them at the end

auto problems = collectLevelRulesAndReturnProblems("CODEQL_EXTRACTOR_SWIFT_LOG_LEVELS");

auto timestamp = std::chrono::system_clock::now().time_since_epoch().count();

auto logBaseName = absl::StrCat(timestamp, "-", getpid());

if (text || binary) {

std::filesystem::path logFile = getEnvOr("CODEQL_EXTRACTOR_SWIFT_LOG_DIR", "extractor-out/log");

logFile /= "swift";

logFile /= programName;

logFile /= logBaseName;

std::error_code ec;

std::filesystem::create_directories(logFile.parent_path(), ec);

if (!ec) {

if (text) {

logFile.replace_extension(".log");

textFile.open(logFile);

if (!textFile) {

problems.emplace_back("Unable to open text log file " + logFile.string());

text.level = Level::no_logs;

}

}

if (binary) {

logFile.replace_extension(".blog");

binary.output.open(logFile, std::fstream::out | std::fstream::binary);

if (!binary.output) {

problems.emplace_back("Unable to open binary log file " + logFile.string());

binary.level = Level::no_logs;

}

}

} else {

problems.emplace_back("Unable to create log directory " + logFile.parent_path().string() +

": " + ec.message());

binary.level = Level::no_logs;

text.level = Level::no_logs;

}

}

if (auto diagDir = getEnvOr("CODEQL_EXTRACTOR_SWIFT_DIAGNOSTIC_DIR", nullptr)) {

std::filesystem::path diagFile = diagDir;

diagFile /= programName;

diagFile /= logBaseName;

diagFile.replace_extension(".jsonl");

std::error_code ec;

std::filesystem::create_directories(diagFile.parent_path(), ec);

if (!ec) {

diagnostics.open(diagFile);

if (!diagnostics) {

problems.emplace_back("Unable to open diagnostics json file " + diagFile.string());

}

} else {

problems.emplace_back("Unable to create diagnostics directory " +

diagFile.parent_path().string() + ": " + ec.message());

}

}

for (const auto& problem : problems) {

LOG_ERROR("{}", problem);

}

LOG_INFO("Logging configured (binary: {}, text: {}, console: {}, diagnostics: {})", binary.level,

text.level, console.level, diagnostics.good());

initialized = true;

flushImpl();

session.consume(*this);

if (text) {

textFile.flush();

}

if (binary) {

binary.output.flush();

}

if (diagnostics) {

diagnostics.flush();

}

const std::chrono::nanoseconds& elapsed,

std::string_view message) {

using Clock = std::chrono::system_clock;

Clock::time_point time{std::chrono::duration_cast<Clock::duration>(elapsed)};

if (diagnostics) {

diagnostics << source.json(time, message) << '\n';

}

LoggerConfiguration ret{session, std::string{programName}};

ret.fullyQualifiedName += '/';

ret.fullyQualifiedName += name;

ret.level = std::min({binary.level, text.level, console.level});

ret.level = getLevelFor(ret.fullyQualifiedName, sourceRules, ret.level);

// avoid Logger constructor loop

if (name != "logging") {

LOG_DEBUG("Configuring logger {} with level {}", ret.fullyQualifiedName, ret.level);

}

return ret;