Tools: Fix various clang-tidy warnings

fairmq/tools/Network.cxx

@@ -12,24 +12,21 @@
 #define _GNU_SOURCE // To get defns of NI_MAXSERV and NI_MAXHOST
 #endif
 
+#include <algorithm>
+#include <array>
+#include <boost/algorithm/string.hpp>   // trim
+#include <boost/asio.hpp>
+#include <cstdio>
+#include <exception>
 #include <fairlogger/Logger.h>
-
+#include <ifaddrs.h>
+#include <iostream>
+#include <map>
+#include <netdb.h>
+#include <stdexcept>
+#include <string>
 #include <sys/socket.h>
 #include <sys/types.h>
-#include <netdb.h>
-#include <ifaddrs.h>
-#include <stdio.h>
-
-#include <boost/algorithm/string.hpp> // trim
-#include <boost/asio.hpp>
-
-#include <map>
-#include <string>
-#include <iostream>
-#include <array>
-#include <exception>
-#include <stdexcept>
-#include <algorithm>
 
 using namespace std;
 
@@ -44,9 +41,10 @@ namespace tools
 map<string, string> getHostIPs()
 {
     map<string, string> addressMap;
-    struct ifaddrs *ifaddr, *ifa;
+    ifaddrs* ifaddr;
+    ifaddrs* ifa;
     int s;
-    char host[NI_MAXHOST];
+    array<char, NI_MAXHOST> host{};
 
     if (getifaddrs(&ifaddr) == -1) {
         perror("getifaddrs");
@@ -59,13 +57,13 @@ map<string, string> getHostIPs()
         }
 
         if (ifa->ifa_addr->sa_family == AF_INET) {
-            s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, nullptr, 0, NI_NUMERICHOST);
+            s = getnameinfo(ifa->ifa_addr, sizeof(sockaddr_in), host.data(), NI_MAXHOST, nullptr, 0, NI_NUMERICHOST);
             if (s != 0) {
                 cout << "getnameinfo() failed: " << gai_strerror(s) << endl;
                 throw runtime_error("getnameinfo() failed");
             }
 
-            addressMap.insert(pair<string, string>(ifa->ifa_name, host));
+            addressMap.insert({ifa->ifa_name, host.data()});
         }
     }
 
@@ -79,12 +77,11 @@ string getInterfaceIP(const string& interface)
 {
     try {
         auto IPs = getHostIPs();
-        if (IPs.count(interface)) {
+        if (IPs.count(interface) > 0) {
             return IPs[interface];
-        } else {
-            LOG(error) << "Could not find provided network interface: \"" << interface << "\"!, exiting.";
-            return "";
         }
+        LOG(error) << "Could not find provided network interface: \"" << interface << "\"!, exiting.";
+        return "";
     } catch (runtime_error& re) {
         cout << "could not get interface IP: " << re.what();
         return "";
@@ -94,7 +91,8 @@ string getInterfaceIP(const string& interface)
 // get name of the default route interface
 string getDefaultRouteNetworkInterface()
 {
-    array<char, 128> buffer;
+    const int BUFSIZE(128);
+    array<char, BUFSIZE> buffer{};
     string interfaceName;
 
 #ifdef __APPLE__ // MacOS
@@ -108,15 +106,15 @@ string getDefaultRouteNetworkInterface()
         return "";
     }
 
-    while (!feof(file.get())) {
+    while (feof(file.get()) == 0) {
-        if (fgets(buffer.data(), 128, file.get()) != nullptr) {
+        if (fgets(buffer.data(), BUFSIZE, file.get()) != nullptr) {
             interfaceName += buffer.data();
         }
     }
 
     boost::algorithm::trim(interfaceName);
 
-    if (interfaceName == "") {
+    if (interfaceName.empty()) {
         LOG(error) << "Could not detect default route network interface name";
     } else {
         LOG(debug) << "Detected network interface name for the default route: " << interfaceName;

fairmq/tools/Process.cxx

@@ -9,16 +9,15 @@
 #include <fairmq/tools/Process.h>
 #include <fairmq/tools/Strings.h>
 
-#include <boost/process.hpp>
 #include <boost/asio.hpp>
 #include <boost/date_time/posix_time/posix_time.hpp>
-
+#include <boost/process.hpp>
-#include <signal.h> // kill, signals
+#include <csignal>   // kill, signals
-
 #include <iostream>
 #include <sstream>
-#include <thread>
 #include <stdexcept>
+#include <thread>
+#include <utility>
 
 using namespace std;
 namespace bp = boost::process;
@@ -28,9 +27,9 @@ namespace bs = boost::system;
 class LinePrinter
 {
   public:
-    LinePrinter(stringstream& out, const string& prefix)
+    LinePrinter(stringstream& out, string prefix)
         : fOut(out)
-        , fPrefix(prefix)
+        , fPrefix(move(prefix))
     {}
 
     // prints line with prefix on both cout (thread-safe) and output stream
@@ -82,8 +81,8 @@ execute_result execute(const string& cmd, const string& prefix, const string& in
     bp::async_pipe errorPipe(ios);
 
     const string delimiter = "\n";
-    ba::deadline_timer inputTimer(ios, boost::posix_time::milliseconds(100));
+    ba::deadline_timer inputTimer(ios, boost::posix_time::milliseconds(100)); // NOLINT
-    ba::deadline_timer signalTimer(ios, boost::posix_time::milliseconds(100));
+    ba::deadline_timer signalTimer(ios, boost::posix_time::milliseconds(100)); // NOLINT
 
     // child process
     bp::child c(cmd, bp::std_out > outputPipe, bp::std_err > errorPipe, bp::std_in < inputPipe);
@@ -91,7 +90,7 @@ execute_result execute(const string& cmd, const string& prefix, const string& in
     p.Print(ToString("fair::mq::tools::execute: pid: ", pid));
 
     // handle std_in with a delay
-    if (input != "") {
+    if (!input.empty()) {
         inputTimer.async_wait([&](const bs::error_code& ec1) {
             if (!ec1) {
                 ba::async_write(inputPipe, inputBuffer, [&](const bs::error_code& ec2, size_t /* n */) {

fairmq/tools/Unique.cxx

@@ -12,10 +12,10 @@
 // otherwise on some systems we'd get boost::uuids::entropy_error
 #define BOOST_UUID_RANDOM_PROVIDER_FORCE_POSIX
 
+#include <boost/functional/hash.hpp>
 #include <boost/uuid/uuid.hpp>
 #include <boost/uuid/uuid_generators.hpp>
 #include <boost/uuid/uuid_io.hpp>
-#include <boost/functional/hash.hpp>
 
 using namespace std;