Codechange: [ContentInfo] Use StringList for tags instead of custom allocations

src/network/core/config.h

@@ -65,6 +65,7 @@ static const uint NETWORK_CLIENT_NAME_LENGTH      =   25;         ///< The maxim
 static const uint NETWORK_RCONCOMMAND_LENGTH      =  500;         ///< The maximum length of a rconsole command, in bytes including '\0'
 static const uint NETWORK_GAMESCRIPT_JSON_LENGTH  = COMPAT_MTU-3; ///< The maximum length of a gamescript json string, in bytes including '\0'. Must not be longer than COMPAT_MTU including header (3 bytes)
 static const uint NETWORK_CHAT_LENGTH             =  900;         ///< The maximum length of a chat message, in bytes including '\0'
+static const uint NETWORK_CONTENT_TAG_LENGTH      =   32;         ///< The maximum length of a content's tag, in bytes including '\0'.
 
 static const uint NETWORK_GRF_NAME_LENGTH         =   80;         ///< Maximum length of the name of a GRF
 

src/network/core/tcp_content.cpp

@@ -25,7 +25,7 @@ ContentInfo::ContentInfo()
 	: /* Temporary... will be removed later in the PR. */
 	type((ContentType)0), id((ContentID)0), filesize(0), filename(""), name(""), version(""),
 	url(""), description(""), unique_id(0), md5sum(""), dependency_count(0), dependencies(nullptr),
-	tag_count(0), tags(nullptr), state((State)0), upgrade(false)
+	state((State)0), upgrade(false)
 {
 }
 
@@ -33,7 +33,6 @@ ContentInfo::ContentInfo()
 ContentInfo::~ContentInfo()
 {
 	free(this->dependencies);
-	free(this->tags);
 }
 
 /**
@@ -44,10 +43,9 @@ void ContentInfo::TransferFrom(ContentInfo *other)
 {
 	if (other != this) {
 		free(this->dependencies);
-		free(this->tags);
 		*this = *other;
 		other->dependencies = nullptr;
-		other->tags = nullptr;
+		other->tags.clear();
 	}
 }
 

src/network/core/tcp_content_type.h

@@ -69,8 +69,7 @@ struct ContentInfo {
 	byte md5sum[16];         ///< The MD5 checksum
 	uint8 dependency_count;  ///< Number of dependencies
 	ContentID *dependencies; ///< Malloced array of dependencies (unique server side ids)
-	uint8 tag_count;         ///< Number of tags
+	StringList tags;         ///< Tags associated with the content
-	char (*tags)[32];        ///< Malloced array of tags (strings)
 	State state;             ///< Whether the content info is selected (for download)
 	bool upgrade;            ///< This item is an upgrade
 

src/network/network_content.cpp

@@ -70,9 +70,9 @@ bool ClientNetworkContentSocketHandler::Receive_SERVER_INFO(Packet *p)
 	ci->dependencies = MallocT<ContentID>(ci->dependency_count);
 	for (uint i = 0; i < ci->dependency_count; i++) ci->dependencies[i] = (ContentID)p->Recv_uint32();
 
-	ci->tag_count = p->Recv_uint8();
+	uint tag_count = p->Recv_uint8();
-	ci->tags = MallocT<char[32]>(ci->tag_count);
+	ci->tags.reserve(tag_count);
-	for (uint i = 0; i < ci->tag_count; i++) p->Recv_string(ci->tags[i], lengthof(*ci->tags));
+	for (uint i = 0; i < tag_count; i++) ci->tags.push_back(p->Recv_string(NETWORK_CONTENT_TAG_LENGTH));
 
 	if (!ci->IsValid()) {
 		delete ci;

src/network/network_content_gui.cpp

@@ -443,9 +443,8 @@ class NetworkContentListWindow : public Window, ContentCallback {
 	static bool CDECL TagNameFilter(const ContentInfo * const *a, ContentListFilterData &filter)
 	{
 		filter.string_filter.ResetState();
-		for (int i = 0; i < (*a)->tag_count; i++) {
+		for (auto &tag : (*a)->tags) filter.string_filter.AddLine(tag.c_str());
-			filter.string_filter.AddLine((*a)->tags[i]);
+
-		}
 		filter.string_filter.AddLine((*a)->name);
 		return filter.string_filter.GetState();
 	}
@@ -747,12 +746,12 @@ public:
 			y = DrawStringMultiLine(r.left + DETAIL_LEFT, r.right - DETAIL_RIGHT, y, max_y, STR_CONTENT_DETAIL_DEPENDENCIES);
 		}
 
-		if (this->selected->tag_count != 0) {
+		if (!this->selected->tags.empty()) {
 			/* List all tags */
 			char buf[DRAW_STRING_BUFFER] = "";
 			char *p = buf;
-			for (uint i = 0; i < this->selected->tag_count; i++) {
+			for (auto &tag : this->selected->tags) {
-				p += seprintf(p, lastof(buf), i == 0 ? "%s" : ", %s", this->selected->tags[i]);
+				p += seprintf(p, lastof(buf), p == buf ? "%s" : ", %s", tag.c_str());
 			}
 			SetDParamStr(0, buf);
 			y = DrawStringMultiLine(r.left + DETAIL_LEFT, r.right - DETAIL_RIGHT, y, max_y, STR_CONTENT_DETAIL_TAGS);