2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 // cmd.h -- Command buffer and command execution
23 //===========================================================================
27 Any number of commands can be added in a frame, from several different sources.
28 Most commands come from either keybindings or console line input, but remote
29 servers can also send across commands and entire text files can be execed.
31 The + command line options are also added to the command buffer.
33 The game starts with a Cbuf_AddText ("exec quake.rc\n"); Cbuf_Execute ();
45 #define CMD_CLIENT (1<<0)
46 #define CMD_SERVER (1<<1)
47 #define CMD_CLIENT_FROM_SERVER (1<<2)
48 #define CMD_SERVER_FROM_CLIENT 9
49 #define CMD_INITWAIT (1<<5)
50 #define CMD_CHEAT (1<<6)
55 typedef void(*xcommand_t) (struct cmd_state_s *cmd);
59 src_client, ///< came in over a net connection as a clc_stringcmd
60 ///< host_client will be valid during this state.
61 src_command ///< from the command buffer
64 typedef struct cmdalias_s
66 struct cmdalias_s *next;
67 char name[MAX_ALIAS_NAME];
69 qboolean initstate; // indicates this command existed at init
70 char *initialvalue; // backup copy of value at init
73 typedef struct cmd_function_s
76 struct cmd_function_s *next;
78 const char *description;
81 qboolean initstate; // indicates this command existed at init
84 typedef struct cmddeferred_s
86 struct cmddeferred_s *next;
91 /// container for user-defined QC functions and aliases, shared between different command interpreters
92 typedef struct cmd_userdefined_s
94 // csqc functions - this is a mess
95 cmd_function_t *csqc_functions;
102 /// command interpreter state - the tokenizing and execution of commands, as well as pointers to which cvars and aliases they can access
103 typedef struct cmd_state_s
109 char tokenizebuffer[CMD_TOKENIZELENGTH];
110 int tokenizebufferpos;
112 cmddeferred_t *deferred_list;
113 double deferred_oldrealtime;
116 unsigned char text_buf[CMDBUFSIZE];
117 Thread_SpinLock text_lock;
120 const char *argv[MAX_ARGS];
121 const char *null_string;
125 cmd_userdefined_t *userdefined; // possible csqc functions and aliases to execute
127 cmd_function_t *engine_functions;
129 cvar_state_t *cvars; // which cvar system is this cmd state able to access? (&cvars_all or &cvars_null)
130 int cvars_flagsmask; // which CVAR_* flags should be visible to this interpreter? (CVAR_CLIENT | CVAR_SERVER, or just CVAR_SERVER)
134 extern cmd_userdefined_t cmd_userdefined_all; // aliases and csqc functions
135 extern cmd_userdefined_t cmd_userdefined_null; // intentionally empty
137 // command interpreter for client commands injected by CSQC, MQC or client engine code
139 extern cmd_state_t cmd_client;
140 // command interpreter for server commands injected by MQC, SVQC, menu engine code or server engine code
142 extern cmd_state_t cmd_server;
143 // command interpreter for server commands received over network from clients
145 extern cmd_state_t cmd_serverfromclient;
147 extern qboolean host_stuffcmdsrun;
149 void Cbuf_Lock(cmd_state_t *cmd);
150 void Cbuf_Unlock(cmd_state_t *cmd);
152 void Cmd_Init_Commands(qboolean dedicated_server);
154 /*! as new commands are generated from the console or keybindings,
155 * the text is added to the end of the command buffer.
157 void Cbuf_AddText (cmd_state_t *cmd, const char *text);
159 /*! when a command wants to issue other commands immediately, the text is
160 * inserted at the beginning of the buffer, before any remaining unexecuted
163 void Cbuf_InsertText (cmd_state_t *cmd, const char *text);
165 /*! Pulls off terminated lines of text from the command buffer and sends
166 * them through Cmd_ExecuteString. Stops when the buffer is empty.
167 * Normally called once per frame, but may be explicitly invoked.
168 * \note Do not call inside a command function!
170 void Cbuf_Execute (cmd_state_t *cmd);
171 /*! Performs deferred commands and runs Cbuf_Execute, called by Host_Main */
172 void Cbuf_Frame (cmd_state_t *cmd);
174 //===========================================================================
178 Command execution takes a null terminated string, breaks it into tokens,
179 then searches for a command or variable that matches the first token.
181 Commands can come from three sources, but the handler functions may choose
182 to dissallow the action or forward it to a remote server if the source is
188 void Cmd_Shutdown(void);
190 // called by Host_Init, this marks cvars, commands and aliases with their init values
191 void Cmd_SaveInitState(void);
192 // called by FS_GameDir_f, this restores cvars, commands and aliases to init values
193 void Cmd_RestoreInitState(void);
195 void Cmd_AddCommand(int flags, const char *cmd_name, xcommand_t function, const char *description);
196 // called by the init functions of other parts of the program to
197 // register commands and functions to call for them.
198 // The cmd_name is referenced later, so it should not be in temp memory
200 /// used by the cvar code to check for cvar / command name overlap
201 qboolean Cmd_Exists (cmd_state_t *cmd, const char *cmd_name);
203 /// attempts to match a partial command for automatic command line completion
204 /// returns NULL if nothing fits
205 const char *Cmd_CompleteCommand (cmd_state_t *cmd, const char *partial);
207 int Cmd_CompleteAliasCountPossible (cmd_state_t *cmd, const char *partial);
209 const char **Cmd_CompleteAliasBuildList (cmd_state_t *cmd, const char *partial);
211 int Cmd_CompleteCountPossible (cmd_state_t *cmd, const char *partial);
213 const char **Cmd_CompleteBuildList (cmd_state_t *cmd, const char *partial);
215 void Cmd_CompleteCommandPrint (cmd_state_t *cmd, const char *partial);
217 const char *Cmd_CompleteAlias (cmd_state_t *cmd, const char *partial);
219 void Cmd_CompleteAliasPrint (cmd_state_t *cmd, const char *partial);
221 // Enhanced console completion by Fett erich@heintz.com
223 // Added by EvilTypeGuy eviltypeguy@qeradiant.com
225 int Cmd_Argc (cmd_state_t *cmd);
226 const char *Cmd_Argv (cmd_state_t *cmd, int arg);
227 const char *Cmd_Args (cmd_state_t *cmd);
228 // The functions that execute commands get their parameters with these
229 // functions. Cmd_Argv(cmd, ) will return an empty string, not a NULL
230 // if arg > argc, so string operations are always safe.
232 /// Returns the position (1 to argc-1) in the command's argument list
233 /// where the given parameter apears, or 0 if not present
234 int Cmd_CheckParm (cmd_state_t *cmd, const char *parm);
236 //void Cmd_TokenizeString (char *text);
237 // Takes a null terminated string. Does not need to be /n terminated.
238 // breaks the string up into arg tokens.
240 /// Parses a single line of text into arguments and tries to execute it.
241 /// The text can come from the command buffer, a remote client, or stdin.
242 void Cmd_ExecuteString (cmd_state_t *cmd, const char *text, cmd_source_t src, qboolean lockmutex);
244 /// adds the string as a clc_stringcmd to the client message.
245 /// (used when there is no reason to generate a local command to do it)
246 void Cmd_ForwardStringToServer (const char *s);
248 /// adds the current command line as a clc_stringcmd to the client message.
249 /// things like godmode, noclip, etc, are commands directed to the server,
250 /// so when they are typed in at the console, they will need to be forwarded.
251 void Cmd_ForwardToServer_f (cmd_state_t *cmd);
253 /// quotes a string so that it can be used as a command argument again;
254 /// quoteset is a string that contains one or more of ", \, $ and specifies
255 /// the characters to be quoted (you usually want to either pass "\"\\" or
256 /// "\"\\$"). Returns true on success, and false on overrun (in which case out
257 /// will contain a part of the quoted string). If putquotes is set, the
258 /// enclosing quote marks are also put.
259 qboolean Cmd_QuoteString(char *out, size_t outlen, const char *in, const char *quoteset, qboolean putquotes);
261 void Cmd_ClearCSQCCommands (cmd_state_t *cmd);