Set locale only once per request

include/cgimap/util.hpp

@@ -33,8 +33,6 @@ inline size_t unicode_strlen(const std::string & s)
 {
    const char* mbstr = s.c_str();
 
-   std::setlocale(LC_ALL, "C.UTF-8");          // TODO: check location for setlocale
-
    std::mbstate_t state{};
    std::size_t len = std::mbsrtowcs(nullptr, &mbstr, 0, &state);
 

src/process_request.cpp

@@ -420,10 +420,13 @@ void process_request(request &req, rate_limiter &limiter,
                      const std::string &generator, const routes &route,
                      data_selection::factory& factory,
                      data_update::factory* update_factory) {
+
   try {
 
     RequestContext req_ctx{req};
 
+    std::setlocale(LC_ALL, "C.UTF-8");
+
     // get the client IP address
     const auto ip = fcgi_get_env(req, "REMOTE_ADDR");
 

test/test_parse_changeset_input.cpp

@@ -29,6 +29,7 @@ namespace {
 
 std::map<std::string, std::string> process_testmsg(const std::string &payload) {
 
+  std::setlocale(LC_ALL, "C.UTF-8");
   api06::ChangesetXMLParser parser{};
   return parser.process_message(payload);
 }

test/test_parse_osmchange_input.cpp

@@ -66,6 +66,7 @@ std::string repeat(const std::string &input, size_t num) {
 
 void process_testmsg(const std::string &payload) {
 
+  std::setlocale(LC_ALL, "C.UTF-8");
   Test_Parser_Callback cb;
   api06::OSMChangeXMLParser parser(cb);
   parser.process_message(payload);