Fix for #21. On systems with "non-standard" LOCALE settings std::stoX…

… functions may produce wrong results (#22)

Signed-off-by: Remigiusz Kołłątaj <[email protected]>

src/parser.hpp

@@ -3,15 +3,27 @@
 
 #include "cantypes.hpp"
 #include <string>
+#include <clocale>
 
 namespace CANdb {
 
 template <typename Derived> struct Parser {
 
     bool parse(const std::string& data) noexcept
     {
+        // Store current LOCALE
+        std::string prevLocale = std::setlocale(LC_ALL, nullptr);
+        // To assure that std::stoX functions will produced the same results
+        // on systems with different LOCALE settings
+        std::setlocale(LC_ALL, "C");
+
         Derived* d = static_cast<Derived*>(this);
-        return d->parse(data);
+        auto ret = d->parse(data);
+
+        // Restore previous LOCALE for the application
+        std::setlocale(LC_ALL, prevLocale.c_str());
+
+        return ret;
     }
 
     CANdb_t getDb() const noexcept { return can_db; }