Codechange: Use std::string for storing GRF error messages.

4 files changed, 24 insertions, 33 deletions

diff --git a/src/newgrf.cpp b/src/newgrf.cpp
index 3f621e5c9..6b5a2f9ce 100644
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -5248,7 +5248,7 @@ static void NewSpriteGroup(ByteReader *buf)
 						group->num_input = buf->ReadByte();
 						if (group->num_input > lengthof(group->subtract_input)) {
 							GRFError *error = DisableGrf(STR_NEWGRF_ERROR_INDPROD_CALLBACK);
-							error->data = stredup("too many inputs (max 16)");
+							error->data = "too many inputs (max 16)";
 							return;
 						}
 						for (uint i = 0; i < group->num_input; i++) {
@@ -5261,7 +5261,7 @@ static void NewSpriteGroup(ByteReader *buf)
 								group->version = 0xFF;
 							} else if (std::find(group->cargo_input, group->cargo_input + i, cargo) != group->cargo_input + i) {
 								GRFError *error = DisableGrf(STR_NEWGRF_ERROR_INDPROD_CALLBACK);
-								error->data = stredup("duplicate input cargo");
+								error->data = "duplicate input cargo";
 								return;
 							}
 							group->cargo_input[i] = cargo;
@@ -5270,7 +5270,7 @@ static void NewSpriteGroup(ByteReader *buf)
 						group->num_output = buf->ReadByte();
 						if (group->num_output > lengthof(group->add_output)) {
 							GRFError *error = DisableGrf(STR_NEWGRF_ERROR_INDPROD_CALLBACK);
-							error->data = stredup("too many outputs (max 16)");
+							error->data = "too many outputs (max 16)";
 							return;
 						}
 						for (uint i = 0; i < group->num_output; i++) {
@@ -5281,7 +5281,7 @@ static void NewSpriteGroup(ByteReader *buf)
 								group->version = 0xFF;
 							} else if (std::find(group->cargo_output, group->cargo_output + i, cargo) != group->cargo_output + i) {
 								GRFError *error = DisableGrf(STR_NEWGRF_ERROR_INDPROD_CALLBACK);
-								error->data = stredup("duplicate output cargo");
+								error->data = "duplicate output cargo";
 								return;
 							}
 							group->cargo_output[i] = cargo;
@@ -6517,7 +6517,7 @@ static void CfgApply(ByteReader *buf)
 static void DisableStaticNewGRFInfluencingNonStaticNewGRFs(GRFConfig *c)
 {
 	GRFError *error = DisableGrf(STR_NEWGRF_ERROR_STATIC_GRF_CAUSES_DESYNC, c);
-	error->data = stredup(_cur.grfconfig->GetName());
+	error->data = _cur.grfconfig->GetName();
 }
 
 /* Action 0x07
@@ -6895,10 +6895,10 @@ static void GRFLoadError(ByteReader *buf)
 		if (buf->HasData()) {
 			const char *message = buf->ReadString();
 
-			error->custom_message = stredup(TranslateTTDPatchCodes(_cur.grffile->grfid, lang, true, message, SCC_RAW_STRING_POINTER).c_str());
+			error->custom_message = TranslateTTDPatchCodes(_cur.grffile->grfid, lang, true, message, SCC_RAW_STRING_POINTER);
 		} else {
 			grfmsg(7, "GRFLoadError: No custom message supplied.");
-			error->custom_message = stredup("");
+			error->custom_message.clear();
 		}
 	} else {
 		error->message = msgstr[message_id];
@@ -6907,10 +6907,10 @@ static void GRFLoadError(ByteReader *buf)
 	if (buf->HasData()) {
 		const char *data = buf->ReadString();
 
-		error->data = stredup(TranslateTTDPatchCodes(_cur.grffile->grfid, lang, true, data).c_str());
+		error->data = TranslateTTDPatchCodes(_cur.grffile->grfid, lang, true, data);
 	} else {
 		grfmsg(7, "GRFLoadError: No message data supplied.");
-		error->data = stredup("");
+		error->data.clear();
 	}
 
 	/* Only two parameter numbers can be used in the string. */
@@ -7771,7 +7771,7 @@ static void TranslateGRFStrings(ByteReader *buf)
 
 		char tmp[256];
 		GetString(tmp, STR_NEWGRF_ERROR_AFTER_TRANSLATED_FILE, lastof(tmp));
-		error->data = stredup(tmp);
+		error->data = tmp;
 
 		return;
 	}
diff --git a/src/newgrf_config.cpp b/src/newgrf_config.cpp
index 8452d0829..75c1977f2 100644
--- a/src/newgrf_config.cpp
+++ b/src/newgrf_config.cpp
@@ -179,7 +179,8 @@ uint _missing_extra_graphics = 0;
  */
 GRFError::GRFError(StringID severity, StringID message) :
 	message(message),
-	severity(severity)
+	severity(severity),
+	param_value()
 {
 }
 
@@ -188,23 +189,14 @@ GRFError::GRFError(StringID severity, StringID message) :
  * @param error The GRFError object to make a copy of.
  */
 GRFError::GRFError(const GRFError &error) :
-	ZeroedMemoryAllocator(),
 	custom_message(error.custom_message),
 	data(error.data),
 	message(error.message),
 	severity(error.severity)
 {
-	if (error.custom_message != nullptr) this->custom_message = stredup(error.custom_message);
-	if (error.data           != nullptr) this->data           = stredup(error.data);
 	memcpy(this->param_value, error.param_value, sizeof(this->param_value));
 }
 
-GRFError::~GRFError()
-{
-	free(this->custom_message);
-	free(this->data);
-}
-
 /**
  * Create a new empty GRFParameterInfo object.
  * @param nr The newgrf parameter that is changed.
diff --git a/src/newgrf_config.h b/src/newgrf_config.h
index 2c8a8559d..ef7128905 100644
--- a/src/newgrf_config.h
+++ b/src/newgrf_config.h
@@ -109,16 +109,15 @@ struct GRFIdentifier {
 };
 
 /** Information about why GRF had problems during initialisation */
-struct GRFError : ZeroedMemoryAllocator {
+struct GRFError {
 	GRFError(StringID severity, StringID message = 0);
 	GRFError(const GRFError &error);
-	~GRFError();
 
-	char *custom_message;  ///< Custom message (if present)
-	char *data;            ///< Additional data for message and custom_message
-	StringID message;      ///< Default message
-	StringID severity;     ///< Info / Warning / Error / Fatal
-	uint32 param_value[2]; ///< Values of GRF parameters to show for message and custom_message
+	std::string custom_message; ///< Custom message (if present)
+	std::string data;           ///< Additional data for message and custom_message
+	StringID message;           ///< Default message
+	StringID severity;          ///< Info / Warning / Error / Fatal
+	uint32 param_value[2];      ///< Values of GRF parameters to show for message and custom_message
 };
 
 /** The possible types of a newgrf parameter. */
diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
index 3b462f427..3f0a2ee7e 100644
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -50,10 +50,10 @@ void ShowNewGRFError()
 		/* We only want to show fatal errors */
 		if (c->error == nullptr || c->error->severity != STR_NEWGRF_ERROR_MSG_FATAL) continue;
 
-		SetDParam   (0, c->error->custom_message == nullptr ? c->error->message : STR_JUST_RAW_STRING);
-		SetDParamStr(1, c->error->custom_message);
+		SetDParam   (0, c->error->message != STR_NULL ? c->error->message : STR_JUST_RAW_STRING);
+		SetDParamStr(1, c->error->custom_message.c_str());
 		SetDParamStr(2, c->filename);
-		SetDParamStr(3, c->error->data);
+		SetDParamStr(3, c->error->data.c_str());
 		for (uint i = 0; i < lengthof(c->error->param_value); i++) {
 			SetDParam(4 + i, c->error->param_value[i]);
 		}
@@ -66,13 +66,13 @@ static void ShowNewGRFInfo(const GRFConfig *c, uint x, uint y, uint right, uint
 {
 	if (c->error != nullptr) {
 		char message[512];
-		SetDParamStr(0, c->error->custom_message); // is skipped by built-in messages
+		SetDParamStr(0, c->error->custom_message.c_str()); // is skipped by built-in messages
 		SetDParamStr(1, c->filename);
-		SetDParamStr(2, c->error->data);
+		SetDParamStr(2, c->error->data.c_str());
 		for (uint i = 0; i < lengthof(c->error->param_value); i++) {
 			SetDParam(3 + i, c->error->param_value[i]);
 		}
-		GetString(message, c->error->custom_message == nullptr ? c->error->message : STR_JUST_RAW_STRING, lastof(message));
+		GetString(message, c->error->message != STR_NULL ? c->error->message : STR_JUST_RAW_STRING, lastof(message));
 
 		SetDParamStr(0, message);
 		y = DrawStringMultiLine(x, right, y, bottom, c->error->severity);