Initial commit.

codemp/qcommon/cmd_common.cpp

@@ -0,0 +1,651 @@
+// cmd.c -- Quake script command processing module
+
+//Anything above this #include will be ignored by the compiler
+#include "../qcommon/exe_headers.h"
+
+#ifdef _XBOX
+#include "../cgame/cg_local.h"
+#include "../client/cl_data.h"
+#endif
+
+#define	MAX_CMD_BUFFER	16384
+#define	MAX_CMD_LINE	1024
+
+typedef struct {
+	byte	*data;
+	int		maxsize;
+	int		cursize;
+} cmd_t;
+
+int			cmd_wait;
+cmd_t		cmd_text;
+byte		cmd_text_buf[MAX_CMD_BUFFER];
+
+
+//=============================================================================
+
+/*
+============
+Cmd_Wait_f
+
+Causes execution of the remainder of the command buffer to be delayed until
+next frame.  This allows commands like:
+bind g "cmd use rocket ; +attack ; wait ; -attack ; cmd use blaster"
+============
+*/
+void Cmd_Wait_f( void ) {
+#ifdef _XBOX
+	if(ClientManager::splitScreenMode == qtrue)
+	{
+		if ( Cmd_Argc() == 2 ) {
+			ClientManager::ActiveClient().cmd_wait = atoi( Cmd_Argv( 1 ) );
+		} else {
+			ClientManager::ActiveClient().cmd_wait = 1;
+		}
+	}
+	else
+	{
+#endif
+	if ( Cmd_Argc() == 2 ) {
+		cmd_wait = atoi( Cmd_Argv( 1 ) );
+	} else {
+		cmd_wait = 1;
+	}
+#ifdef _XBOX
+	}
+#endif
+}
+
+
+/*
+=============================================================================
+
+						COMMAND BUFFER
+
+=============================================================================
+*/
+
+/*
+============
+Cbuf_Init
+============
+*/
+void Cbuf_Init (void)
+{
+#ifdef _XBOX
+	if(ClientManager::splitScreenMode == qtrue)
+	{
+		CM_START_LOOP();
+		MSG_Init (&ClientManager::ActiveClient().cmd_text, ClientManager::ActiveClient().cmd_text_buf, 
+			sizeof(ClientManager::ActiveClient().cmd_text_buf));
+		CM_END_LOOP();
+	}
+	else
+	{
+#endif
+
+	cmd_text.data = cmd_text_buf;
+	cmd_text.maxsize = MAX_CMD_BUFFER;
+	cmd_text.cursize = 0;
+
+#ifdef _XBOX
+	}
+#endif
+}
+
+/*
+============
+Cbuf_AddText
+
+Adds command text at the end of the buffer, does NOT add a final \n
+============
+*/
+void Cbuf_AddText( const char *text ) {
+	int		l;
+	
+	l = strlen (text);
+
+#ifdef _XBOX
+	if(ClientManager::splitScreenMode == qtrue)
+	{
+		if (ClientManager::ActiveClient().cmd_text.cursize + l >= ClientManager::ActiveClient().cmd_text.maxsize)
+		{
+			Com_Printf ("Cbuf_AddText: overflow\n");
+			return;
+		}
+		Com_Memcpy (&ClientManager::ActiveClient().cmd_text.data[ClientManager::ActiveClient().cmd_text.cursize], text, strlen (text));
+		ClientManager::ActiveClient().cmd_text.cursize += l;
+	}
+	else
+	{
+#endif
+
+	if (cmd_text.cursize + l >= cmd_text.maxsize)
+	{
+		Com_Printf ("Cbuf_AddText: overflow\n");
+		return;
+	}
+	Com_Memcpy(&cmd_text.data[cmd_text.cursize], text, l);
+	cmd_text.cursize += l;
+
+#ifdef _XBOX
+	}
+#endif
+}
+
+
+/*
+============
+Cbuf_InsertText
+
+Adds command text immediately after the current command
+Adds a \n to the text
+============
+*/
+void Cbuf_InsertText( const char *text ) {
+	int		len;
+	int		i;
+
+	len = strlen( text ) + 1;
+
+#ifdef _XBOX
+	if(ClientManager::splitScreenMode == qtrue)
+	{
+		if ( len + ClientManager::ActiveClient().cmd_text.cursize > ClientManager::ActiveClient().cmd_text.maxsize ) {
+			Com_Printf( "Cbuf_InsertText overflowed\n" );
+			return;
+		}
+
+		// move the existing command text
+		for ( i = ClientManager::ActiveClient().cmd_text.cursize - 1 ; i >= 0 ; i-- ) {
+			ClientManager::ActiveClient().cmd_text.data[ i + len ] = ClientManager::ActiveClient().cmd_text.data[ i ];
+		}
+
+		// copy the new text in
+		memcpy( ClientManager::ActiveClient().cmd_text.data, text, len - 1 );
+
+		// add a \n
+		ClientManager::ActiveClient().cmd_text.data[ len - 1 ] = '\n';
+
+		ClientManager::ActiveClient().cmd_text.cursize += len;
+	}
+	else
+	{
+#endif
+
+	if ( len + cmd_text.cursize > cmd_text.maxsize ) {
+		Com_Printf( "Cbuf_InsertText overflowed\n" );
+		return;
+	}
+
+	// move the existing command text
+	for ( i = cmd_text.cursize - 1 ; i >= 0 ; i-- ) {
+		cmd_text.data[ i + len ] = cmd_text.data[ i ];
+	}
+
+	// copy the new text in
+	Com_Memcpy( cmd_text.data, text, len - 1 );
+
+	// add a \n
+	cmd_text.data[ len - 1 ] = '\n';
+
+	cmd_text.cursize += len;
+
+#ifdef _XBOX
+	}
+#endif
+}
+
+
+/*
+============
+Cbuf_ExecuteText
+============
+*/
+void Cbuf_ExecuteText (int exec_when, const char *text)
+{
+	switch (exec_when)
+	{
+	case EXEC_NOW:
+		if (text && strlen(text) > 0) {
+			Cmd_ExecuteString (text);
+		} else {
+			Cbuf_Execute();
+		}
+		break;
+	case EXEC_INSERT:
+		Cbuf_InsertText (text);
+		break;
+	case EXEC_APPEND:
+		Cbuf_AddText (text);
+		break;
+	default:
+		Com_Error (ERR_FATAL, "Cbuf_ExecuteText: bad exec_when");
+	}
+}
+
+/*
+============
+Cbuf_Execute
+============
+*/
+void Cbuf_Execute (void)
+{
+	int		i;
+	char	*text;
+	char	line[MAX_CMD_LINE];
+	int		quotes;
+
+#ifdef _XBOX
+	if(ClientManager::splitScreenMode == qtrue)
+	{
+		CM_START_LOOP();
+		while (ClientManager::ActiveClient().cmd_text.cursize)
+		{
+			if ( ClientManager::ActiveClient().cmd_wait )	{
+				// skip out while text still remains in buffer, leaving it
+				// for next frame
+				ClientManager::ActiveClient().cmd_wait--;
+				break;
+			}
+
+			// find a \n or ; line break
+			text = (char *)ClientManager::ActiveClient().cmd_text.data;
+
+			quotes = 0;
+			for (i=0 ; i< ClientManager::ActiveClient().cmd_text.cursize ; i++)
+			{
+				if (text[i] == '"')
+					quotes++;
+				if ( !(quotes&1) &&  text[i] == ';')
+					break;	// don't break if inside a quoted string
+				if (text[i] == '\n' || text[i] == '\r' )
+					break;
+			}
+				
+					
+			memcpy (line, text, i);
+			line[i] = 0;
+		
+			// delete the text from the command buffer and move remaining commands down
+			// this is necessary because commands (exec) can insert data at the
+			// beginning of the text buffer
+
+			if (i == ClientManager::ActiveClient().cmd_text.cursize)
+				ClientManager::ActiveClient().cmd_text.cursize = 0;
+			else
+			{
+				i++;
+				ClientManager::ActiveClient().cmd_text.cursize -= i;
+				memmove (text, text+i, ClientManager::ActiveClient().cmd_text.cursize);
+			}
+
+			// execute the command line
+			Cmd_ExecuteString (line);		
+		}
+		CM_END_LOOP();
+	}
+	else
+	{
+#endif
+
+	while (cmd_text.cursize)
+	{
+		if ( cmd_wait )	{
+			// skip out while text still remains in buffer, leaving it
+			// for next frame
+			cmd_wait--;
+			break;
+		}
+
+		// find a \n or ; line break
+		text = (char *)cmd_text.data;
+
+		quotes = 0;
+		for (i=0 ; i< cmd_text.cursize ; i++)
+		{
+			if (text[i] == '"')
+				quotes++;
+			if ( !(quotes&1) &&  text[i] == ';')
+				break;	// don't break if inside a quoted string
+			if (text[i] == '\n' || text[i] == '\r' )
+				break;
+		}
+
+		if( i >= (MAX_CMD_LINE - 1)) {
+			i = MAX_CMD_LINE - 1;
+		}
+				
+		Com_Memcpy (line, text, i);
+		line[i] = 0;
+		
+// delete the text from the command buffer and move remaining commands down
+// this is necessary because commands (exec) can insert data at the
+// beginning of the text buffer
+
+		if (i == cmd_text.cursize)
+			cmd_text.cursize = 0;
+		else
+		{
+			i++;
+			cmd_text.cursize -= i;
+			memmove (text, text+i, cmd_text.cursize);
+		}
+
+// execute the command line
+
+		Cmd_ExecuteString (line);		
+	}
+
+#ifdef _XBOX
+	}
+#endif
+}
+
+
+/*
+==============================================================================
+
+						SCRIPT COMMANDS
+
+==============================================================================
+*/
+
+
+/*
+===============
+Cmd_Exec_f
+===============
+*/
+void Cmd_Exec_f( void ) {
+	char	*f;
+	int		len;
+	char	filename[MAX_QPATH];
+
+	if (Cmd_Argc () != 2) {
+		Com_Printf ("exec <filename> : execute a script file\n");
+		return;
+	}
+
+	Q_strncpyz( filename, Cmd_Argv(1), sizeof( filename ) );
+	COM_DefaultExtension( filename, sizeof( filename ), ".cfg" ); 
+	len = FS_ReadFile( filename, (void **)&f);
+	if (!f) {
+		Com_Printf ("couldn't exec %s\n",Cmd_Argv(1));
+		return;
+	}
+#ifndef FINAL_BUILD
+	Com_Printf ("execing %s\n",Cmd_Argv(1));
+#endif
+
+	Cbuf_InsertText (f);
+
+	FS_FreeFile (f);
+}
+
+
+/*
+===============
+Cmd_Vstr_f
+
+Inserts the current value of a variable as command text
+===============
+*/
+void Cmd_Vstr_f( void ) {
+	char	*v;
+
+	if (Cmd_Argc () != 2) {
+		Com_Printf ("vstr <variablename> : execute a variable command\n");
+		return;
+	}
+
+	v = Cvar_VariableString( Cmd_Argv( 1 ) );
+	Cbuf_InsertText( va("%s\n", v ) );
+}
+
+
+/*
+===============
+Cmd_Echo_f
+
+Just prints the rest of the line to the console
+===============
+*/
+void Cmd_Echo_f (void)
+{
+	int		i;
+	
+	for (i=1 ; i<Cmd_Argc() ; i++)
+		Com_Printf ("%s ",Cmd_Argv(i));
+	Com_Printf ("\n");
+}
+
+
+/*
+=============================================================================
+
+					COMMAND EXECUTION
+
+=============================================================================
+*/
+
+
+static	int			cmd_argc;
+static	char		*cmd_argv[MAX_STRING_TOKENS];		// points into cmd_tokenized
+static	char		cmd_tokenized[BIG_INFO_STRING+MAX_STRING_TOKENS];	// will have 0 bytes inserted
+
+
+/*
+============
+Cmd_Argc
+============
+*/
+int		Cmd_Argc( void ) {
+	return cmd_argc;
+}
+
+/*
+============
+Cmd_Argv
+============
+*/
+char	*Cmd_Argv( int arg ) {
+	if ( (unsigned)arg >= cmd_argc ) {
+		return "";
+	}
+	return cmd_argv[arg];	
+}
+
+/*
+============
+Cmd_ArgvBuffer
+
+The interpreted versions use this because
+they can't have pointers returned to them
+============
+*/
+void	Cmd_ArgvBuffer( int arg, char *buffer, int bufferLength ) {
+	Q_strncpyz( buffer, Cmd_Argv( arg ), bufferLength );
+}
+
+
+/*
+============
+Cmd_Args
+
+Returns a single string containing argv(1) to argv(argc()-1)
+============
+*/
+char	*Cmd_Args( void ) {
+	static	char		cmd_args[MAX_STRING_CHARS];
+	int		i;
+
+	cmd_args[0] = 0;
+	for ( i = 1 ; i < cmd_argc ; i++ ) {
+		strcat( cmd_args, cmd_argv[i] );
+		if ( i != cmd_argc-1 ) {
+			strcat( cmd_args, " " );
+		}
+	}
+
+	return cmd_args;
+}
+
+/*
+============
+Cmd_Args
+
+Returns a single string containing argv(arg) to argv(argc()-1)
+============
+*/
+char *Cmd_ArgsFrom( int arg ) {
+	static	char		cmd_args[BIG_INFO_STRING];
+	int		i;
+
+	cmd_args[0] = 0;
+	if (arg < 0)
+		arg = 0;
+	for ( i = arg ; i < cmd_argc ; i++ ) {
+		strcat( cmd_args, cmd_argv[i] );
+		if ( i != cmd_argc-1 ) {
+			strcat( cmd_args, " " );
+		}
+	}
+
+	return cmd_args;
+}
+
+/*
+============
+Cmd_ArgsBuffer
+
+The interpreted versions use this because
+they can't have pointers returned to them
+============
+*/
+void	Cmd_ArgsBuffer( char *buffer, int bufferLength ) {
+	Q_strncpyz( buffer, Cmd_Args(), bufferLength );
+}
+
+
+/*
+============
+Cmd_TokenizeString
+
+Parses the given string into command line tokens.
+The text is copied to a seperate buffer and 0 characters
+are inserted in the apropriate place, The argv array
+will point into this temporary buffer.
+============
+*/
+void Cmd_TokenizeString( const char *text_in ) {
+	const char	*text;
+	char	*textOut;
+
+	// clear previous args
+	cmd_argc = 0;
+
+	if ( !text_in ) {
+		return;
+	}
+
+	text = text_in;
+	textOut = cmd_tokenized;
+
+	while ( 1 ) {
+		if ( cmd_argc == MAX_STRING_TOKENS ) {
+			return;			// this is usually something malicious
+		}
+
+		while ( 1 ) {
+			// skip whitespace
+			while ( *text && *text <= ' ' ) {
+				text++;
+			}
+			if ( !*text ) {
+				return;			// all tokens parsed
+			}
+
+			// skip // comments
+			if ( text[0] == '/' && text[1] == '/' ) {
+				return;			// all tokens parsed
+			}
+
+			// skip /* */ comments
+			if ( text[0] == '/' && text[1] =='*' ) {
+				while ( *text && ( text[0] != '*' || text[1] != '/' ) ) {
+					text++;
+				}
+				if ( !*text ) {
+					return;		// all tokens parsed
+				}
+				text += 2;
+			} else {
+				break;			// we are ready to parse a token
+			}
+		}
+
+		// handle quoted strings
+		if ( *text == '"' ) {
+			cmd_argv[cmd_argc] = textOut;
+			cmd_argc++;
+			text++;
+			while ( *text && *text != '"' ) {
+				*textOut++ = *text++;
+			}
+			*textOut++ = 0;
+			if ( !*text ) {
+				return;		// all tokens parsed
+			}
+			text++;
+			continue;
+		}
+
+		// regular token
+		cmd_argv[cmd_argc] = textOut;
+		cmd_argc++;
+
+		// skip until whitespace, quote, or command
+		while ( *(const unsigned char* /*eurofix*/)text > ' ' ) 
+		{
+			if ( text[0] == '"' ) {
+				break;
+			}
+
+			if ( text[0] == '/' && text[1] == '/' ) {
+				break;
+			}
+
+			// skip /* */ comments
+			if ( text[0] == '/' && text[1] =='*' ) {
+				break;
+			}
+
+			*textOut++ = *text++;
+		}
+
+		*textOut++ = 0;
+
+		if ( !*text ) {
+			return;		// all tokens parsed
+		}
+	}
+	
+}
+
+
+
+/*
+============
+Cmd_Init
+============
+*/
+extern void Cmd_List_f(void);
+void Cmd_Init (void) {
+	Cmd_AddCommand ("cmdlist",Cmd_List_f);
+	Cmd_AddCommand ("exec",Cmd_Exec_f);
+	Cmd_AddCommand ("vstr",Cmd_Vstr_f);
+	Cmd_AddCommand ("echo",Cmd_Echo_f);
+	Cmd_AddCommand ("wait", Cmd_Wait_f);
+}
+