Codechange: let IsUnique.* functions accept std::string

src/company_cmd.cpp

@@ -1049,7 +1049,7 @@ CommandCost CmdSetCompanyColour(TileIndex tile, DoCommandFlag flags, uint32 p1,
  * @param name Name to search.
  * @return \c true if the name us unique (that is, not in use), else \c false.
  */
-static bool IsUniqueCompanyName(const char *name)
+static bool IsUniqueCompanyName(const std::string &name)
 {
 	for (const Company *c : Company::Iterate()) {
 		if (!c->name.empty() && c->name == name) return false;
@@ -1095,7 +1095,7 @@ CommandCost CmdRenameCompany(TileIndex tile, DoCommandFlag flags, uint32 p1, uin
  * @param name Name to search.
  * @return \c true if the name us unique (that is, not in use), else \c false.
  */
-static bool IsUniquePresidentName(const char *name)
+static bool IsUniquePresidentName(const std::string &name)
 {
 	for (const Company *c : Company::Iterate()) {
 		if (!c->president_name.empty() && c->president_name == name) return false;

src/depot_cmd.cpp

@@ -26,7 +26,7 @@
  * @param name The name to check.
  * @return True if there is no depot with the given name.
  */
-static bool IsUniqueDepotName(const char *name)
+static bool IsUniqueDepotName(const std::string &name)
 {
 	for (const Depot *d : Depot::Iterate()) {
 		if (!d->name.empty() && d->name == name) return false;

src/engine.cpp

@@ -1061,7 +1061,7 @@ void EnginesMonthlyLoop()
  * @param name New name of an engine.
  * @return \c false if the name is being used already, else \c true.
  */
-static bool IsUniqueEngineName(const char *name)
+static bool IsUniqueEngineName(const std::string &name)
 {
 	for (const Engine *e : Engine::Iterate()) {
 		if (!e->name.empty() && e->name == name) return false;

src/station_cmd.cpp

@@ -3915,7 +3915,7 @@ static uint UpdateStationWaiting(Station *st, CargoID type, uint amount, SourceT
 	return amount;
 }
 
-static bool IsUniqueStationName(const char *name)
+static bool IsUniqueStationName(const std::string &name)
 {
 	for (const Station *st : Station::Iterate()) {
 		if (!st->name.empty() && st->name == name) return false;

src/town_cmd.cpp

@@ -1907,7 +1907,7 @@ static CommandCost TownCanBePlacedHere(TileIndex tile)
  * @param name name to check
  * @return is this name unique?
  */
-static bool IsUniqueTownName(const char *name)
+static bool IsUniqueTownName(const std::string &name)
 {
 	for (const Town *t : Town::Iterate()) {
 		if (!t->name.empty() && t->name == name) return false;

src/vehicle_cmd.cpp

@@ -748,7 +748,7 @@ CommandCost CmdDepotMassAutoReplace(TileIndex tile, DoCommandFlag flags, uint32
  * @param name Name to test.
  * @return True ifffffff the name is unique.
  */
-static bool IsUniqueVehicleName(const char *name)
+static bool IsUniqueVehicleName(const std::string &name)
 {
 	for (const Vehicle *v : Vehicle::Iterate()) {
 		if (!v->name.empty() && v->name == name) return false;

src/waypoint_cmd.cpp

@@ -395,7 +395,7 @@ CommandCost RemoveBuoy(TileIndex tile, DoCommandFlag flags)
  * @param name The name to check.
  * @return True iff the name is unique.
  */
-static bool IsUniqueWaypointName(const char *name)
+static bool IsUniqueWaypointName(const std::string &name)
 {
 	for (const Waypoint *wp : Waypoint::Iterate()) {
 		if (!wp->name.empty() && wp->name == name) return false;