Merge #5793

5793: Allow demo/map command line arguments to be relative paths, allow using `play` in command line r=def- a=Robyt3

Closes #5645.

## Checklist

- [X] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Robert Müller <robytemueller@gmail.com>

src/engine/client/client.cpp

@@ -3198,7 +3198,9 @@ void CClient::Run()
 		// handle pending demo play
 		if(m_aCmdPlayDemo[0])
 		{
-			const char *pError = DemoPlayer_Play(m_aCmdPlayDemo, IStorage::TYPE_ABSOLUTE);
+			const char *pError = DemoPlayer_Play(m_aCmdPlayDemo, IStorage::TYPE_ALL);
+			if(pError && !fs_is_relative_path(m_aCmdPlayDemo))
+				pError = DemoPlayer_Play(m_aCmdPlayDemo, IStorage::TYPE_ABSOLUTE);
 			if(pError)
 				dbg_msg("demo_player", "playing passed demo file '%s' failed: %s", m_aCmdPlayDemo, pError);
 			m_aCmdPlayDemo[0] = 0;
@@ -3207,7 +3209,9 @@ void CClient::Run()
 		// handle pending map edits
 		if(m_aCmdEditMap[0])
 		{
-			int Result = m_pEditor->Load(m_aCmdEditMap, IStorage::TYPE_ABSOLUTE);
+			int Result = m_pEditor->Load(m_aCmdEditMap, IStorage::TYPE_ALL);
+			if(!Result && !fs_is_relative_path(m_aCmdEditMap))
+				m_pEditor->Load(m_aCmdEditMap, IStorage::TYPE_ABSOLUTE);
 			if(Result)
 				g_Config.m_ClEditor = true;
 			else
@@ -3502,7 +3506,7 @@ bool CClient::CtrlShiftKey(int Key, bool &Last)
 void CClient::Con_Connect(IConsole::IResult *pResult, void *pUserData)
 {
 	CClient *pSelf = (CClient *)pUserData;
-	str_copy(pSelf->m_aCmdConnect, pResult->GetString(0));
+	pSelf->HandleConnectLink(pResult->GetString(0));
 }
 
 void CClient::Con_Disconnect(IConsole::IResult *pResult, void *pUserData)
@@ -3975,9 +3979,7 @@ const char *CClient::DemoPlayer_Render(const char *pFilename, int StorageType, c
 void CClient::Con_Play(IConsole::IResult *pResult, void *pUserData)
 {
 	CClient *pSelf = (CClient *)pUserData;
-	const char *pError = pSelf->DemoPlayer_Play(pResult->GetString(0), IStorage::TYPE_ALL);
+	pSelf->HandleDemoPath(pResult->GetString(0));
-	if(pError)
-		pSelf->m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "demo_player", pError);
 }
 
 void CClient::Con_DemoPlay(IConsole::IResult *pResult, void *pUserData)
@@ -4531,7 +4533,10 @@ void CClient::HandleConnectAddress(const NETADDR *pAddr)
 
 void CClient::HandleConnectLink(const char *pLink)
 {
+	if(str_startswith(pLink, CONNECTLINK))
 		str_copy(m_aCmdConnect, pLink + sizeof(CONNECTLINK) - 1);
+	else
+		str_copy(m_aCmdConnect, pLink);
 }
 
 void CClient::HandleDemoPath(const char *pPath)
@@ -4544,6 +4549,27 @@ void CClient::HandleMapPath(const char *pPath)
 	str_copy(m_aCmdEditMap, pPath);
 }
 
+static bool UnknownArgumentCallback(const char *pCommand, void *pUser)
+{
+	CClient *pClient = static_cast<CClient *>(pUser);
+	if(str_startswith(pCommand, CONNECTLINK))
+	{
+		pClient->HandleConnectLink(pCommand);
+		return true;
+	}
+	else if(str_endswith(pCommand, ".demo"))
+	{
+		pClient->HandleDemoPath(pCommand);
+		return true;
+	}
+	else if(str_endswith(pCommand, ".map"))
+	{
+		pClient->HandleMapPath(pCommand);
+		return true;
+	}
+	return false;
+}
+
 /*
 	Server Time
 	Client Mirror Time
@@ -4729,14 +4755,9 @@ int main(int argc, const char **argv)
 	g_Config.m_ClConfigVersion = 1;
 
 	// parse the command line arguments
-	if(argc == 2 && str_startswith(argv[1], CONNECTLINK))
+	pConsole->SetUnknownCommandCallback(UnknownArgumentCallback, pClient);
-		pClient->HandleConnectLink(argv[1]);
-	else if(argc == 2 && str_endswith(argv[1], ".demo"))
-		pClient->HandleDemoPath(argv[1]);
-	else if(argc == 2 && str_endswith(argv[1], ".map"))
-		pClient->HandleMapPath(argv[1]);
-	else if(argc > 1)
 	pConsole->ParseArguments(argc - 1, (const char **)&argv[1]);
+	pConsole->SetUnknownCommandCallback(IConsole::EmptyUnknownCommandCallback, nullptr);
 
 	if(pSteam->GetConnectAddress())
 	{

src/engine/console.h

@@ -85,8 +85,10 @@ public:
 	typedef void (*FPossibleCallback)(int Index, const char *pCmd, void *pUser);
 	typedef void (*FCommandCallback)(IResult *pResult, void *pUserData);
 	typedef void (*FChainCommandCallback)(IResult *pResult, void *pUserData, FCommandCallback pfnCallback, void *pCallbackUserData);
+	typedef bool (*FUnknownCommandCallback)(const char *pCommand, void *pUser); // returns true if the callback has handled the argument
 
 	static void EmptyPossibleCommandCallback(int Index, const char *pCmd, void *pUser) {}
+	static bool EmptyUnknownCommandCallback(const char *pCommand, void *pUser) { return false; }
 
 	virtual void Init() = 0;
 	virtual const CCommandInfo *FirstCommandInfo(int AccessLevel, int Flagmask) const = 0;
@@ -110,6 +112,7 @@ public:
 	virtual char *Format(char *pBuf, int Size, const char *pFrom, const char *pStr) = 0;
 	virtual void Print(int Level, const char *pFrom, const char *pStr, ColorRGBA PrintColor = gs_ConsoleDefaultColor) = 0;
 	virtual void SetTeeHistorianCommandCallback(FTeeHistorianCommandCallback pfnCallback, void *pUser) = 0;
+	virtual void SetUnknownCommandCallback(FUnknownCommandCallback pfnCallback, void *pUser) = 0;
 	virtual void InitChecksum(CChecksumData *pData) const = 0;
 
 	virtual void SetAccessLevel(int AccessLevel) = 0;

src/engine/shared/console.cpp

@@ -342,6 +342,12 @@ void CConsole::SetTeeHistorianCommandCallback(FTeeHistorianCommandCallback pfnCa
 	m_pTeeHistorianCommandUserdata = pUser;
 }
 
+void CConsole::SetUnknownCommandCallback(FUnknownCommandCallback pfnCallback, void *pUser)
+{
+	m_pfnUnknownCommandCallback = pfnCallback;
+	m_pUnknownCommandUserdata = pUser;
+}
+
 void CConsole::InitChecksum(CChecksumData *pData) const
 {
 	pData->m_NumCommands = 0;
@@ -541,11 +547,14 @@ void CConsole::ExecuteLineStroked(int Stroke, const char *pStr, int ClientID, bo
 			}
 		}
 		else if(Stroke)
+		{
+			if(!m_pfnUnknownCommandCallback(Result.m_pCommand, m_pUnknownCommandUserdata))
 			{
 				char aBuf[256];
 				str_format(aBuf, sizeof(aBuf), "No such command: %s.", Result.m_pCommand);
 				Print(OUTPUT_LEVEL_STANDARD, "chatresp", aBuf);
 			}
+		}
 
 		pStr = pNextPart;
 	}

src/engine/shared/console.h

@@ -68,6 +68,9 @@ class CConsole : public IConsole
 	FTeeHistorianCommandCallback m_pfnTeeHistorianCommandCallback;
 	void *m_pTeeHistorianCommandUserdata;
 
+	FUnknownCommandCallback m_pfnUnknownCommandCallback = EmptyUnknownCommandCallback;
+	void *m_pUnknownCommandUserdata = nullptr;
+
 	enum
 	{
 		CONSOLE_MAX_STR_LENGTH = 8192,
@@ -214,6 +217,7 @@ public:
 	char *Format(char *pBuf, int Size, const char *pFrom, const char *pStr) override;
 	void Print(int Level, const char *pFrom, const char *pStr, ColorRGBA PrintColor = gs_ConsoleDefaultColor) override;
 	void SetTeeHistorianCommandCallback(FTeeHistorianCommandCallback pfnCallback, void *pUser) override;
+	void SetUnknownCommandCallback(FUnknownCommandCallback pfnCallback, void *pUser) override;
 	void InitChecksum(CChecksumData *pData) const override;
 
 	void SetAccessLevel(int AccessLevel) override { m_AccessLevel = clamp(AccessLevel, (int)(ACCESS_LEVEL_ADMIN), (int)(ACCESS_LEVEL_USER)); }