00aa78ba00bda6298494e3cfc82bf98c3da610de
[xonotic/darkplaces.git] / cmd.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
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.
8
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.
12
13 See the GNU General Public License for more details.
14
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.
18
19 */
20 // cmd.c -- Quake script command processing module
21
22 #include "quakedef.h"
23
24 #define MAX_ALIAS_NAME  32
25 // this is the largest script file that can be executed in one step
26 // LordHavoc: inreased this from 8192 to 32768
27 #define CMDBUFSIZE 32768
28 // maximum number of parameters to a command
29 #define MAX_ARGS 80
30 // maximum tokenizable commandline length (counting NUL terminations)
31 #define CMD_TOKENIZELENGTH (MAX_INPUTLINE + 80)
32
33 typedef struct cmdalias_s
34 {
35         struct cmdalias_s *next;
36         char name[MAX_ALIAS_NAME];
37         char *value;
38 } cmdalias_t;
39
40 static cmdalias_t *cmd_alias;
41
42 static qboolean cmd_wait;
43
44 static mempool_t *cmd_mempool;
45
46 static char cmd_tokenizebuffer[CMD_TOKENIZELENGTH];
47 static int cmd_tokenizebufferpos = 0;
48
49 //=============================================================================
50
51 /*
52 ============
53 Cmd_Wait_f
54
55 Causes execution of the remainder of the command buffer to be delayed until
56 next frame.  This allows commands like:
57 bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
58 ============
59 */
60 static void Cmd_Wait_f (void)
61 {
62         cmd_wait = true;
63 }
64
65 /*
66 =============================================================================
67
68                                                 COMMAND BUFFER
69
70 =============================================================================
71 */
72
73 static sizebuf_t        cmd_text;
74 static unsigned char            cmd_text_buf[CMDBUFSIZE];
75
76 /*
77 ============
78 Cbuf_AddText
79
80 Adds command text at the end of the buffer
81 ============
82 */
83 void Cbuf_AddText (const char *text)
84 {
85         int             l;
86
87         l = (int)strlen (text);
88
89         if (cmd_text.cursize + l >= cmd_text.maxsize)
90         {
91                 Con_Print("Cbuf_AddText: overflow\n");
92                 return;
93         }
94
95         SZ_Write (&cmd_text, (const unsigned char *)text, (int)strlen (text));
96 }
97
98
99 /*
100 ============
101 Cbuf_InsertText
102
103 Adds command text immediately after the current command
104 Adds a \n to the text
105 FIXME: actually change the command buffer to do less copying
106 ============
107 */
108 void Cbuf_InsertText (const char *text)
109 {
110         char    *temp;
111         int             templen;
112
113         // copy off any commands still remaining in the exec buffer
114         templen = cmd_text.cursize;
115         if (templen)
116         {
117                 temp = (char *)Mem_Alloc (tempmempool, templen);
118                 memcpy (temp, cmd_text.data, templen);
119                 SZ_Clear (&cmd_text);
120         }
121         else
122                 temp = NULL;
123
124         // add the entire text of the file
125         Cbuf_AddText (text);
126
127         // add the copied off data
128         if (temp != NULL)
129         {
130                 SZ_Write (&cmd_text, (const unsigned char *)temp, templen);
131                 Mem_Free (temp);
132         }
133 }
134
135 /*
136 ============
137 Cbuf_Execute
138 ============
139 */
140 static void Cmd_PreprocessString( const char *intext, char *outtext, unsigned maxoutlen, cmdalias_t *alias );
141 void Cbuf_Execute (void)
142 {
143         int i;
144         char *text;
145         char line[MAX_INPUTLINE];
146         char preprocessed[MAX_INPUTLINE];
147         int quotes;
148
149         // LordHavoc: making sure the tokenizebuffer doesn't get filled up by repeated crashes
150         cmd_tokenizebufferpos = 0;
151
152         while (cmd_text.cursize)
153         {
154 // find a \n or ; line break
155                 text = (char *)cmd_text.data;
156
157                 quotes = 0;
158                 for (i=0 ; i< cmd_text.cursize ; i++)
159                 {
160                         if (text[i] == '"')
161                                 quotes ^= 1;
162                         if (text[i] == '\\' && text[i+1] == '"')
163                                 i++;
164                         if ( !quotes &&  text[i] == ';')
165                                 break;  // don't break if inside a quoted string
166                         if (text[i] == '\r' || text[i] == '\n')
167                                 break;
168                 }
169
170                 memcpy (line, text, i);
171                 line[i] = 0;
172
173 // delete the text from the command buffer and move remaining commands down
174 // this is necessary because commands (exec, alias) can insert data at the
175 // beginning of the text buffer
176
177                 if (i == cmd_text.cursize)
178                         cmd_text.cursize = 0;
179                 else
180                 {
181                         i++;
182                         cmd_text.cursize -= i;
183                         memcpy (cmd_text.data, text+i, cmd_text.cursize);
184                 }
185
186 // execute the command line
187                 Cmd_PreprocessString( line, preprocessed, sizeof(preprocessed), NULL );
188                 Cmd_ExecuteString (preprocessed, src_command);
189
190                 if (cmd_wait)
191                 {       // skip out while text still remains in buffer, leaving it
192                         // for next frame
193                         cmd_wait = false;
194                         break;
195                 }
196         }
197 }
198
199 /*
200 ==============================================================================
201
202                                                 SCRIPT COMMANDS
203
204 ==============================================================================
205 */
206
207 /*
208 ===============
209 Cmd_StuffCmds_f
210
211 Adds command line parameters as script statements
212 Commands lead with a +, and continue until a - or another +
213 quake +prog jctest.qp +cmd amlev1
214 quake -nosound +cmd amlev1
215 ===============
216 */
217 qboolean host_stuffcmdsrun = false;
218 void Cmd_StuffCmds_f (void)
219 {
220         int             i, j, l;
221         // this is for all commandline options combined (and is bounds checked)
222         char    build[MAX_INPUTLINE];
223
224         if (Cmd_Argc () != 1)
225         {
226                 Con_Print("stuffcmds : execute command line parameters\n");
227                 return;
228         }
229
230         // no reason to run the commandline arguments twice
231         if (host_stuffcmdsrun)
232                 return;
233
234         host_stuffcmdsrun = true;
235         build[0] = 0;
236         l = 0;
237         for (i = 0;i < com_argc;i++)
238         {
239                 if (com_argv[i] && com_argv[i][0] == '+' && (com_argv[i][1] < '0' || com_argv[i][1] > '9') && l + strlen(com_argv[i]) - 1 <= sizeof(build) - 1)
240                 {
241                         j = 1;
242                         while (com_argv[i][j])
243                                 build[l++] = com_argv[i][j++];
244                         i++;
245                         for (;i < com_argc;i++)
246                         {
247                                 if (!com_argv[i])
248                                         continue;
249                                 if ((com_argv[i][0] == '+' || com_argv[i][0] == '-') && (com_argv[i][1] < '0' || com_argv[i][1] > '9'))
250                                         break;
251                                 if (l + strlen(com_argv[i]) + 4 > sizeof(build) - 1)
252                                         break;
253                                 build[l++] = ' ';
254                                 if (strchr(com_argv[i], ' '))
255                                         build[l++] = '\"';
256                                 for (j = 0;com_argv[i][j];j++)
257                                         build[l++] = com_argv[i][j];
258                                 if (strchr(com_argv[i], ' '))
259                                         build[l++] = '\"';
260                         }
261                         build[l++] = '\n';
262                         i--;
263                 }
264         }
265         // now terminate the combined string and prepend it to the command buffer
266         // we already reserved space for the terminator
267         build[l++] = 0;
268         Cbuf_InsertText (build);
269 }
270
271
272 /*
273 ===============
274 Cmd_Exec_f
275 ===============
276 */
277 static void Cmd_Exec_f (void)
278 {
279         char *f;
280
281         if (Cmd_Argc () != 2)
282         {
283                 Con_Print("exec <filename> : execute a script file\n");
284                 return;
285         }
286
287         f = (char *)FS_LoadFile (Cmd_Argv(1), tempmempool, false, NULL);
288         if (!f)
289         {
290                 Con_Printf("couldn't exec %s\n",Cmd_Argv(1));
291                 return;
292         }
293         Con_DPrintf("execing %s\n",Cmd_Argv(1));
294
295         // if executing default.cfg for the first time, lock the cvar defaults
296         // it may seem backwards to insert this text BEFORE the default.cfg
297         // but Cbuf_InsertText inserts before, so this actually ends up after it.
298         if (!strcmp(Cmd_Argv(1), "default.cfg"))
299                 Cbuf_InsertText("\ncvar_lockdefaults\n");
300
301         // insert newline after the text to make sure the last line is terminated (some text editors omit the trailing newline)
302         // (note: insertion order here is backwards from execution order, so this adds it after the text, by calling it before...)
303         Cbuf_InsertText ("\n");
304         Cbuf_InsertText (f);
305         Mem_Free(f);
306 }
307
308
309 /*
310 ===============
311 Cmd_Echo_f
312
313 Just prints the rest of the line to the console
314 ===============
315 */
316 static void Cmd_Echo_f (void)
317 {
318         int             i;
319
320         for (i=1 ; i<Cmd_Argc() ; i++)
321                 Con_Printf("%s ",Cmd_Argv(i));
322         Con_Print("\n");
323 }
324
325 // DRESK - 5/14/06
326 // Support Doom3-style Toggle Console Command
327 /*
328 ===============
329 Cmd_Toggle_f
330
331 Toggles a specified console variable amongst the values specified (default is 0 and 1)
332 ===============
333 */
334 static void Cmd_Toggle_f(void)
335 {
336         // Acquire Number of Arguments
337         int nNumArgs = Cmd_Argc();
338
339         if(nNumArgs == 1)
340                 // No Arguments Specified; Print Usage
341                 Con_Print("Toggle Console Variable - Usage\n  toggle <variable> - toggles between 0 and 1\n  toggle <variable> <value> - toggles between 0 and <value>\n  toggle <variable> [string 1] [string 2]...[string n] - cycles through all strings\n");
342         else
343         { // Correct Arguments Specified
344                 // Acquire Potential CVar
345                 cvar_t* cvCVar = Cvar_FindVar( Cmd_Argv(1) );
346
347                 if(cvCVar != NULL)
348                 { // Valid CVar
349                         if(nNumArgs == 2)
350                         { // Default Usage
351                                 if(cvCVar->integer)
352                                         Cvar_SetValueQuick(cvCVar, 0);
353                                 else
354                                         Cvar_SetValueQuick(cvCVar, 1);
355                         }
356                         else
357                         if(nNumArgs == 3)
358                         { // 0 and Specified Usage
359                                 if(cvCVar->integer == atoi(Cmd_Argv(2) ) )
360                                         // CVar is Specified Value; // Reset to 0
361                                         Cvar_SetValueQuick(cvCVar, 0);
362                                 else
363                                 if(cvCVar->integer == 0)
364                                         // CVar is 0; Specify Value
365                                         Cvar_SetQuick(cvCVar, Cmd_Argv(2) );
366                                 else
367                                         // CVar does not match; Reset to 0
368                                         Cvar_SetValueQuick(cvCVar, 0);
369                         }
370                         else
371                         { // Variable Values Specified
372                                 int nCnt;
373                                 int bFound = 0;
374
375                                 for(nCnt = 2; nCnt < nNumArgs; nCnt++)
376                                 { // Cycle through Values
377                                         if( strcmp(cvCVar->string, Cmd_Argv(nCnt) ) == 0)
378                                         { // Current Value Located; Increment to Next
379                                                 if( (nCnt + 1) == nNumArgs)
380                                                         // Max Value Reached; Reset
381                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(2) );
382                                                 else
383                                                         // Next Value
384                                                         Cvar_SetQuick(cvCVar, Cmd_Argv(nCnt + 1) );
385
386                                                 // End Loop
387                                                 nCnt = nNumArgs;
388                                                 // Assign Found
389                                                 bFound = 1;
390                                         }
391                                 }
392                                 if(!bFound)
393                                         // Value not Found; Reset to Original
394                                         Cvar_SetQuick(cvCVar, Cmd_Argv(2) );
395                         }
396
397                 }
398                 else
399                 { // Invalid CVar
400                         Con_Printf("ERROR : CVar '%s' not found\n", Cmd_Argv(2) );
401                 }
402         }
403 }
404
405 /*
406 ===============
407 Cmd_Alias_f
408
409 Creates a new command that executes a command string (possibly ; seperated)
410 ===============
411 */
412 static void Cmd_Alias_f (void)
413 {
414         cmdalias_t      *a;
415         char            cmd[MAX_INPUTLINE];
416         int                     i, c;
417         const char              *s;
418         size_t          alloclen;
419
420         if (Cmd_Argc() == 1)
421         {
422                 Con_Print("Current alias commands:\n");
423                 for (a = cmd_alias ; a ; a=a->next)
424                         Con_Printf("%s : %s\n", a->name, a->value);
425                 return;
426         }
427
428         s = Cmd_Argv(1);
429         if (strlen(s) >= MAX_ALIAS_NAME)
430         {
431                 Con_Print("Alias name is too long\n");
432                 return;
433         }
434
435         // if the alias already exists, reuse it
436         for (a = cmd_alias ; a ; a=a->next)
437         {
438                 if (!strcmp(s, a->name))
439                 {
440                         Z_Free (a->value);
441                         break;
442                 }
443         }
444
445         if (!a)
446         {
447                 cmdalias_t *prev, *current;
448
449                 a = (cmdalias_t *)Z_Malloc (sizeof(cmdalias_t));
450                 strlcpy (a->name, s, sizeof (a->name));
451                 // insert it at the right alphanumeric position
452                 for( prev = NULL, current = cmd_alias ; current && strcmp( current->name, a->name ) < 0 ; prev = current, current = current->next )
453                         ;
454                 if( prev ) {
455                         prev->next = a;
456                 } else {
457                         cmd_alias = a;
458                 }
459                 a->next = current;
460         }
461
462
463 // copy the rest of the command line
464         cmd[0] = 0;             // start out with a null string
465         c = Cmd_Argc();
466         for (i=2 ; i< c ; i++)
467         {
468                 strlcat (cmd, Cmd_Argv(i), sizeof (cmd));
469                 if (i != c)
470                         strlcat (cmd, " ", sizeof (cmd));
471         }
472         strlcat (cmd, "\n", sizeof (cmd));
473
474         alloclen = strlen (cmd) + 1;
475         a->value = (char *)Z_Malloc (alloclen);
476         memcpy (a->value, cmd, alloclen);
477 }
478
479 /*
480 =============================================================================
481
482                                         COMMAND EXECUTION
483
484 =============================================================================
485 */
486
487 typedef struct cmd_function_s
488 {
489         struct cmd_function_s *next;
490         const char *name;
491         const char *description;
492         xcommand_t consolefunction;
493         xcommand_t clientfunction;
494         qboolean csqcfunc;
495 } cmd_function_t;
496
497 static int cmd_argc;
498 static const char *cmd_argv[MAX_ARGS];
499 static const char *cmd_null_string = "";
500 static const char *cmd_args;
501 cmd_source_t cmd_source;
502
503
504 static cmd_function_t *cmd_functions;           // possible commands to execute
505
506 /*
507 Cmd_PreprocessString
508
509 Preprocesses strings and replaces $*, $param#, $cvar accordingly
510 */
511 static void Cmd_PreprocessString( const char *intext, char *outtext, unsigned maxoutlen, cmdalias_t *alias ) {
512         const char *in;
513         unsigned outlen;
514         int inquote;
515
516         // don't crash if there's no room in the outtext buffer
517         if( maxoutlen == 0 ) {
518                 return;
519         }
520         maxoutlen--; // because of \0
521
522         in = intext;
523         outlen = 0;
524         inquote = 0;
525
526         while( *in && outlen < maxoutlen ) {
527                 if( *in == '$' && !inquote ) {
528                         // this is some kind of expansion, see what comes after the $
529                         in++;
530                         // replacements that can always be used:
531                         // $$ is replaced with $, to allow escaping $
532                         // $<cvarname> is replaced with the contents of the cvar
533                         //
534                         // the following can be used in aliases only:
535                         // $* is replaced with all formal parameters (including name of the alias - this probably is not desirable)
536                         // $0 is replaced with the name of this alias
537                         // $<number> is replaced with an argument to this alias (or copied as-is if no such parameter exists), can be multiple digits
538                         if( *in == '$' ) {
539                                 outtext[outlen++] = *in++;
540                         } else if( *in == '*' && alias ) {
541                                 const char *linein = Cmd_Args();
542
543                                 // include all parameters
544                                 if (linein) {
545                                         while( *linein && outlen < maxoutlen ) {
546                                                 outtext[outlen++] = *linein++;
547                                         }
548                                 }
549
550                                 in++;
551                         } else if( '0' <= *in && *in <= '9' && alias ) {
552                                 char *nexttoken;
553                                 int argnum;
554
555                                 argnum = strtol( in, &nexttoken, 10 );
556
557                                 if( 0 <= argnum && argnum < Cmd_Argc() ) {
558                                         const char *param = Cmd_Argv( argnum );
559                                         while( *param && outlen < maxoutlen ) {
560                                                 outtext[outlen++] = *param++;
561                                         }
562                                         in = nexttoken;
563                                 } else if( argnum >= Cmd_Argc() ) {
564                                         Con_Printf( "Warning: Not enough parameters passed to alias '%s', at least %i expected:\n    %s\n", alias->name, argnum, alias->value );
565                                         outtext[outlen++] = '$';
566                                 }
567                         } else {
568                                 cvar_t *cvar;
569                                 const char *tempin = in;
570
571                                 COM_ParseToken_Console( &tempin );
572                                 // don't expand rcon_password or similar cvars (CVAR_PRIVATE flag)
573                                 if ((cvar = Cvar_FindVar(&com_token[0])) && !(cvar->flags & CVAR_PRIVATE)) {
574                                         const char *cvarcontent = cvar->string;
575                                         while( *cvarcontent && outlen < maxoutlen ) {
576                                                 outtext[outlen++] = *cvarcontent++;
577                                         }
578                                         in = tempin;
579                                 } else {
580                                         if( alias ) {
581                                                 Con_Printf( "Warning: could not find cvar %s when expanding alias %s\n    %s\n", com_token, alias->name, alias->value );
582                                         } else {
583                                                 Con_Printf( "Warning: could not find cvar %s\n", com_token );
584                                         }
585                                         outtext[outlen++] = '$';
586                                 }
587                         }
588                 } else {
589                         if( *in == '"' ) {
590                                 inquote ^= 1;
591                         }
592                         outtext[outlen++] = *in++;
593                 }
594         }
595         outtext[outlen] = 0;
596 }
597
598 /*
599 ============
600 Cmd_ExecuteAlias
601
602 Called for aliases and fills in the alias into the cbuffer
603 ============
604 */
605 static void Cmd_ExecuteAlias (cmdalias_t *alias)
606 {
607         static char buffer[ MAX_INPUTLINE + 2 ];
608         Cmd_PreprocessString( alias->value, buffer, sizeof(buffer) - 2, alias );
609         // insert at start of command buffer, so that aliases execute in order
610         // (fixes bug introduced by Black on 20050705)
611         Cbuf_InsertText( buffer );
612 }
613
614 /*
615 ========
616 Cmd_List
617
618         CmdList Added by EvilTypeGuy eviltypeguy@qeradiant.com
619         Thanks to Matthias "Maddes" Buecher, http://www.inside3d.com/qip/
620
621 ========
622 */
623 static void Cmd_List_f (void)
624 {
625         cmd_function_t *cmd;
626         const char *partial;
627         int len, count;
628
629         if (Cmd_Argc() > 1)
630         {
631                 partial = Cmd_Argv (1);
632                 len = (int)strlen(partial);
633         }
634         else
635         {
636                 partial = NULL;
637                 len = 0;
638         }
639
640         count = 0;
641         for (cmd = cmd_functions; cmd; cmd = cmd->next)
642         {
643                 if (partial && strncmp(partial, cmd->name, len))
644                         continue;
645                 Con_Printf("%s : %s\n", cmd->name, cmd->description);
646                 count++;
647         }
648
649         if (partial)
650                 Con_Printf("%i Command%s beginning with \"%s\"\n\n", count, (count > 1) ? "s" : "", partial);
651         else
652                 Con_Printf("%i Command%s\n\n", count, (count > 1) ? "s" : "");
653 }
654
655 /*
656 ============
657 Cmd_Init
658 ============
659 */
660 void Cmd_Init (void)
661 {
662         cmd_mempool = Mem_AllocPool("commands", 0, NULL);
663         // space for commands and script files
664         cmd_text.data = cmd_text_buf;
665         cmd_text.maxsize = sizeof(cmd_text_buf);
666         cmd_text.cursize = 0;
667 }
668
669 void Cmd_Init_Commands (void)
670 {
671 //
672 // register our commands
673 //
674         Cmd_AddCommand ("stuffcmds",Cmd_StuffCmds_f, "execute commandline parameters (must be present in quake.rc script)");
675         Cmd_AddCommand ("exec",Cmd_Exec_f, "execute a script file");
676         Cmd_AddCommand ("echo",Cmd_Echo_f, "print a message to the console (useful in scripts)");
677         Cmd_AddCommand ("alias",Cmd_Alias_f, "create a script function (parameters are passed in as $1 through $9, and $* for all parameters)");
678         Cmd_AddCommand ("cmd", Cmd_ForwardToServer, "send a console commandline to the server (used by some mods)");
679         Cmd_AddCommand ("wait", Cmd_Wait_f, "make script execution wait for next rendered frame");
680         Cmd_AddCommand ("set", Cvar_Set_f, "create or change the value of a console variable");
681         Cmd_AddCommand ("seta", Cvar_SetA_f, "create or change the value of a console variable that will be saved to config.cfg");
682
683         // 2000-01-09 CmdList, CvarList commands By Matthias "Maddes" Buecher
684         // Added/Modified by EvilTypeGuy eviltypeguy@qeradiant.com
685         Cmd_AddCommand ("cmdlist", Cmd_List_f, "lists all console commands beginning with the specified prefix");
686         Cmd_AddCommand ("cvarlist", Cvar_List_f, "lists all console variables beginning with the specified prefix");
687
688         Cmd_AddCommand ("cvar_lockdefaults", Cvar_LockDefaults_f, "stores the current values of all cvars into their default values, only used once during startup after parsing default.cfg");
689         Cmd_AddCommand ("cvar_resettodefaults_all", Cvar_ResetToDefaults_All_f, "sets all cvars to their locked default values");
690         Cmd_AddCommand ("cvar_resettodefaults_nosaveonly", Cvar_ResetToDefaults_NoSaveOnly_f, "sets all non-saved cvars to their locked default values (variables that will not be saved to config.cfg)");
691         Cmd_AddCommand ("cvar_resettodefaults_saveonly", Cvar_ResetToDefaults_SaveOnly_f, "sets all saved cvars to their locked default values (variables that will be saved to config.cfg)");
692
693         // DRESK - 5/14/06
694         // Support Doom3-style Toggle Command
695         Cmd_AddCommand( "toggle", Cmd_Toggle_f, "toggles a console variable's values (use for more info)");
696 }
697
698 /*
699 ============
700 Cmd_Shutdown
701 ============
702 */
703 void Cmd_Shutdown(void)
704 {
705         Mem_FreePool(&cmd_mempool);
706 }
707
708 /*
709 ============
710 Cmd_Argc
711 ============
712 */
713 int             Cmd_Argc (void)
714 {
715         return cmd_argc;
716 }
717
718 /*
719 ============
720 Cmd_Argv
721 ============
722 */
723 const char *Cmd_Argv (int arg)
724 {
725         if (arg >= cmd_argc )
726                 return cmd_null_string;
727         return cmd_argv[arg];
728 }
729
730 /*
731 ============
732 Cmd_Args
733 ============
734 */
735 const char *Cmd_Args (void)
736 {
737         return cmd_args;
738 }
739
740
741 /*
742 ============
743 Cmd_TokenizeString
744
745 Parses the given string into command line tokens.
746 ============
747 */
748 // AK: This function should only be called from ExcuteString because the current design is a bit of an hack
749 static void Cmd_TokenizeString (const char *text)
750 {
751         int l;
752
753         cmd_argc = 0;
754         cmd_args = NULL;
755
756         while (1)
757         {
758                 // skip whitespace up to a /n
759                 while (*text && *text <= ' ' && *text != '\r' && *text != '\n')
760                         text++;
761
762                 // line endings:
763                 // UNIX: \n
764                 // Mac: \r
765                 // Windows: \r\n
766                 if (*text == '\n' || *text == '\r')
767                 {
768                         // a newline separates commands in the buffer
769                         if (*text == '\r' && text[1] == '\n')
770                                 text++;
771                         text++;
772                         break;
773                 }
774
775                 if (!*text)
776                         return;
777
778                 if (cmd_argc == 1)
779                         cmd_args = text;
780
781                 if (!COM_ParseToken_Console(&text))
782                         return;
783
784                 if (cmd_argc < MAX_ARGS)
785                 {
786                         l = (int)strlen(com_token) + 1;
787                         if (cmd_tokenizebufferpos + l > CMD_TOKENIZELENGTH)
788                         {
789                                 Con_Printf("Cmd_TokenizeString: ran out of %i character buffer space for command arguements\n", CMD_TOKENIZELENGTH);
790                                 break;
791                         }
792                         memcpy (cmd_tokenizebuffer + cmd_tokenizebufferpos, com_token, l);
793                         cmd_argv[cmd_argc] = cmd_tokenizebuffer + cmd_tokenizebufferpos;
794                         cmd_tokenizebufferpos += l;
795                         cmd_argc++;
796                 }
797         }
798 }
799
800
801 /*
802 ============
803 Cmd_AddCommand
804 ============
805 */
806 void Cmd_AddCommand_WithClientCommand (const char *cmd_name, xcommand_t consolefunction, xcommand_t clientfunction, const char *description)
807 {
808         cmd_function_t *cmd;
809         cmd_function_t *prev, *current;
810
811 // fail if the command is a variable name
812         if (Cvar_FindVar( cmd_name ))
813         {
814                 Con_Printf("Cmd_AddCommand: %s already defined as a var\n", cmd_name);
815                 return;
816         }
817
818 // fail if the command already exists
819         for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
820         {
821                 if (!strcmp (cmd_name, cmd->name))
822                 {
823                         if (consolefunction || clientfunction)
824                         {
825                                 Con_Printf("Cmd_AddCommand: %s already defined\n", cmd_name);
826                                 return;
827                         }
828                         else    //[515]: csqc
829                         {
830                                 cmd->csqcfunc = true;
831                                 return;
832                         }
833                 }
834         }
835
836         cmd = (cmd_function_t *)Mem_Alloc(cmd_mempool, sizeof(cmd_function_t));
837         cmd->name = cmd_name;
838         cmd->consolefunction = consolefunction;
839         cmd->clientfunction = clientfunction;
840         cmd->description = description;
841         if(!consolefunction && !clientfunction)                 //[515]: csqc
842                 cmd->csqcfunc = true;
843         cmd->next = cmd_functions;
844
845 // insert it at the right alphanumeric position
846         for( prev = NULL, current = cmd_functions ; current && strcmp( current->name, cmd->name ) < 0 ; prev = current, current = current->next )
847                 ;
848         if( prev ) {
849                 prev->next = cmd;
850         } else {
851                 cmd_functions = cmd;
852         }
853         cmd->next = current;
854 }
855
856 void Cmd_AddCommand (const char *cmd_name, xcommand_t function, const char *description)
857 {
858         Cmd_AddCommand_WithClientCommand (cmd_name, function, NULL, description);
859 }
860
861 /*
862 ============
863 Cmd_Exists
864 ============
865 */
866 qboolean Cmd_Exists (const char *cmd_name)
867 {
868         cmd_function_t  *cmd;
869
870         for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
871                 if (!strcmp (cmd_name,cmd->name))
872                         return true;
873
874         return false;
875 }
876
877
878 /*
879 ============
880 Cmd_CompleteCommand
881 ============
882 */
883 const char *Cmd_CompleteCommand (const char *partial)
884 {
885         cmd_function_t *cmd;
886         size_t len;
887
888         len = strlen(partial);
889
890         if (!len)
891                 return NULL;
892
893 // check functions
894         for (cmd = cmd_functions; cmd; cmd = cmd->next)
895                 if (!strncasecmp(partial, cmd->name, len))
896                         return cmd->name;
897
898         return NULL;
899 }
900
901 /*
902         Cmd_CompleteCountPossible
903
904         New function for tab-completion system
905         Added by EvilTypeGuy
906         Thanks to Fett erich@heintz.com
907         Thanks to taniwha
908
909 */
910 int Cmd_CompleteCountPossible (const char *partial)
911 {
912         cmd_function_t *cmd;
913         size_t len;
914         int h;
915
916         h = 0;
917         len = strlen(partial);
918
919         if (!len)
920                 return 0;
921
922         // Loop through the command list and count all partial matches
923         for (cmd = cmd_functions; cmd; cmd = cmd->next)
924                 if (!strncasecmp(partial, cmd->name, len))
925                         h++;
926
927         return h;
928 }
929
930 /*
931         Cmd_CompleteBuildList
932
933         New function for tab-completion system
934         Added by EvilTypeGuy
935         Thanks to Fett erich@heintz.com
936         Thanks to taniwha
937
938 */
939 const char **Cmd_CompleteBuildList (const char *partial)
940 {
941         cmd_function_t *cmd;
942         size_t len = 0;
943         size_t bpos = 0;
944         size_t sizeofbuf = (Cmd_CompleteCountPossible (partial) + 1) * sizeof (const char *);
945         const char **buf;
946
947         len = strlen(partial);
948         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
949         // Loop through the alias list and print all matches
950         for (cmd = cmd_functions; cmd; cmd = cmd->next)
951                 if (!strncasecmp(partial, cmd->name, len))
952                         buf[bpos++] = cmd->name;
953
954         buf[bpos] = NULL;
955         return buf;
956 }
957
958 // written by LordHavoc
959 void Cmd_CompleteCommandPrint (const char *partial)
960 {
961         cmd_function_t *cmd;
962         size_t len = strlen(partial);
963         // Loop through the command list and print all matches
964         for (cmd = cmd_functions; cmd; cmd = cmd->next)
965                 if (!strncasecmp(partial, cmd->name, len))
966                         Con_Printf("%s : %s\n", cmd->name, cmd->description);
967 }
968
969 /*
970         Cmd_CompleteAlias
971
972         New function for tab-completion system
973         Added by EvilTypeGuy
974         Thanks to Fett erich@heintz.com
975         Thanks to taniwha
976
977 */
978 const char *Cmd_CompleteAlias (const char *partial)
979 {
980         cmdalias_t *alias;
981         size_t len;
982
983         len = strlen(partial);
984
985         if (!len)
986                 return NULL;
987
988         // Check functions
989         for (alias = cmd_alias; alias; alias = alias->next)
990                 if (!strncasecmp(partial, alias->name, len))
991                         return alias->name;
992
993         return NULL;
994 }
995
996 // written by LordHavoc
997 void Cmd_CompleteAliasPrint (const char *partial)
998 {
999         cmdalias_t *alias;
1000         size_t len = strlen(partial);
1001         // Loop through the alias list and print all matches
1002         for (alias = cmd_alias; alias; alias = alias->next)
1003                 if (!strncasecmp(partial, alias->name, len))
1004                         Con_Printf("%s : %s\n", alias->name, alias->value);
1005 }
1006
1007
1008 /*
1009         Cmd_CompleteAliasCountPossible
1010
1011         New function for tab-completion system
1012         Added by EvilTypeGuy
1013         Thanks to Fett erich@heintz.com
1014         Thanks to taniwha
1015
1016 */
1017 int Cmd_CompleteAliasCountPossible (const char *partial)
1018 {
1019         cmdalias_t      *alias;
1020         size_t          len;
1021         int                     h;
1022
1023         h = 0;
1024
1025         len = strlen(partial);
1026
1027         if (!len)
1028                 return 0;
1029
1030         // Loop through the command list and count all partial matches
1031         for (alias = cmd_alias; alias; alias = alias->next)
1032                 if (!strncasecmp(partial, alias->name, len))
1033                         h++;
1034
1035         return h;
1036 }
1037
1038 /*
1039         Cmd_CompleteAliasBuildList
1040
1041         New function for tab-completion system
1042         Added by EvilTypeGuy
1043         Thanks to Fett erich@heintz.com
1044         Thanks to taniwha
1045
1046 */
1047 const char **Cmd_CompleteAliasBuildList (const char *partial)
1048 {
1049         cmdalias_t *alias;
1050         size_t len = 0;
1051         size_t bpos = 0;
1052         size_t sizeofbuf = (Cmd_CompleteAliasCountPossible (partial) + 1) * sizeof (const char *);
1053         const char **buf;
1054
1055         len = strlen(partial);
1056         buf = (const char **)Mem_Alloc(tempmempool, sizeofbuf + sizeof (const char *));
1057         // Loop through the alias list and print all matches
1058         for (alias = cmd_alias; alias; alias = alias->next)
1059                 if (!strncasecmp(partial, alias->name, len))
1060                         buf[bpos++] = alias->name;
1061
1062         buf[bpos] = NULL;
1063         return buf;
1064 }
1065
1066 void Cmd_ClearCsqcFuncs (void)
1067 {
1068         cmd_function_t *cmd;
1069         for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
1070                 cmd->csqcfunc = false;
1071 }
1072
1073 qboolean CL_VM_ConsoleCommand (const char *cmd);
1074 /*
1075 ============
1076 Cmd_ExecuteString
1077
1078 A complete command line has been parsed, so try to execute it
1079 FIXME: lookupnoadd the token to speed search?
1080 ============
1081 */
1082 void Cmd_ExecuteString (const char *text, cmd_source_t src)
1083 {
1084         int oldpos;
1085         cmd_function_t *cmd;
1086         cmdalias_t *a;
1087
1088         oldpos = cmd_tokenizebufferpos;
1089         cmd_source = src;
1090
1091         Cmd_TokenizeString (text);
1092
1093 // execute the command line
1094         if (!Cmd_Argc())
1095         {
1096                 cmd_tokenizebufferpos = oldpos;
1097                 return;         // no tokens
1098         }
1099
1100 // check functions
1101         for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
1102         {
1103                 if (!strcasecmp (cmd_argv[0],cmd->name))
1104                 {
1105                         if (cmd->csqcfunc && CL_VM_ConsoleCommand (text))       //[515]: csqc
1106                                 return;
1107                         switch (src)
1108                         {
1109                         case src_command:
1110                                 if (cmd->consolefunction)
1111                                         cmd->consolefunction ();
1112                                 else if (cmd->clientfunction)
1113                                 {
1114                                         if (cls.state == ca_connected)
1115                                         {
1116                                                 // forward remote commands to the server for execution
1117                                                 Cmd_ForwardToServer();
1118                                         }
1119                                         else
1120                                                 Con_Printf("Can not send command \"%s\", not connected.\n", Cmd_Argv(0));
1121                                 }
1122                                 else
1123                                         Con_Printf("Command \"%s\" can not be executed\n", Cmd_Argv(0));
1124                                 cmd_tokenizebufferpos = oldpos;
1125                                 return;
1126                         case src_client:
1127                                 if (cmd->clientfunction)
1128                                 {
1129                                         cmd->clientfunction ();
1130                                         cmd_tokenizebufferpos = oldpos;
1131                                         return;
1132                                 }
1133                                 break;
1134                         }
1135                         break;
1136                 }
1137         }
1138
1139         // if it's a client command and no command was found, say so.
1140         if (cmd_source == src_client)
1141         {
1142                 Con_Printf("player \"%s\" tried to %s\n", host_client->name, text);
1143                 return;
1144         }
1145
1146 // check alias
1147         for (a=cmd_alias ; a ; a=a->next)
1148         {
1149                 if (!strcasecmp (cmd_argv[0], a->name))
1150                 {
1151                         Cmd_ExecuteAlias(a);
1152                         cmd_tokenizebufferpos = oldpos;
1153                         return;
1154                 }
1155         }
1156
1157 // check cvars
1158         if (!Cvar_Command () && host_framecount > 0)
1159                 Con_Printf("Unknown command \"%s\"\n", Cmd_Argv(0));
1160
1161         cmd_tokenizebufferpos = oldpos;
1162 }
1163
1164
1165 /*
1166 ===================
1167 Cmd_ForwardStringToServer
1168
1169 Sends an entire command string over to the server, unprocessed
1170 ===================
1171 */
1172 void Cmd_ForwardStringToServer (const char *s)
1173 {
1174         char temp[128];
1175         if (cls.state != ca_connected)
1176         {
1177                 Con_Printf("Can't \"%s\", not connected\n", s);
1178                 return;
1179         }
1180
1181         if (!cls.netcon)
1182                 return;
1183
1184         // LordHavoc: thanks to Fuh for bringing the pure evil of SZ_Print to my
1185         // attention, it has been eradicated from here, its only (former) use in
1186         // all of darkplaces.
1187         if (cls.protocol == PROTOCOL_QUAKEWORLD)
1188                 MSG_WriteByte(&cls.netcon->message, qw_clc_stringcmd);
1189         else
1190                 MSG_WriteByte(&cls.netcon->message, clc_stringcmd);
1191         if ((!strncmp(s, "say ", 4) || !strncmp(s, "say_team ", 9)) && cl_locs_enable.integer)
1192         {
1193                 // say/say_team commands can replace % character codes with status info
1194                 while (*s)
1195                 {
1196                         if (*s == '%' && s[1])
1197                         {
1198                                 // handle proquake message macros
1199                                 temp[0] = 0;
1200                                 switch (s[1])
1201                                 {
1202                                 case 'l': // current location
1203                                         CL_Locs_FindLocationName(temp, sizeof(temp), cl.movement_origin);
1204                                         break;
1205                                 case 'h': // current health
1206                                         dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_HEALTH]);
1207                                         break;
1208                                 case 'a': // current armor
1209                                         dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_ARMOR]);
1210                                         break;
1211                                 case 'x': // current rockets
1212                                         dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_ROCKETS]);
1213                                         break;
1214                                 case 'c': // current cells
1215                                         dpsnprintf(temp, sizeof(temp), "%i", cl.stats[STAT_CELLS]);
1216                                         break;
1217                                 // silly proquake macros
1218                                 case 'd': // loc at last death
1219                                         CL_Locs_FindLocationName(temp, sizeof(temp), cl.lastdeathorigin);
1220                                         break;
1221                                 case 't': // current time
1222                                         dpsnprintf(temp, sizeof(temp), "%.0f:%.0f", floor(cl.time / 60), cl.time - floor(cl.time / 60) * 60);
1223                                         break;
1224                                 case 'r': // rocket launcher status ("I have RL", "I need rockets", "I need RL")
1225                                         if (!(cl.stats[STAT_ITEMS] & IT_ROCKET_LAUNCHER))
1226                                                 dpsnprintf(temp, sizeof(temp), "I need RL");
1227                                         else if (!cl.stats[STAT_ROCKETS])
1228                                                 dpsnprintf(temp, sizeof(temp), "I need rockets");
1229                                         else
1230                                                 dpsnprintf(temp, sizeof(temp), "I have RL");
1231                                         break;
1232                                 case 'p': // powerup status (outputs "quad" "pent" and "eyes" according to status)
1233                                         if (cl.stats[STAT_ITEMS] & IT_QUAD)
1234                                         {
1235                                                 if (temp[0])
1236                                                         strlcat(temp, " ", sizeof(temp));
1237                                                 strlcat(temp, "quad", sizeof(temp));
1238                                         }
1239                                         if (cl.stats[STAT_ITEMS] & IT_INVULNERABILITY)
1240                                         {
1241                                                 if (temp[0])
1242                                                         strlcat(temp, " ", sizeof(temp));
1243                                                 strlcat(temp, "pent", sizeof(temp));
1244                                         }
1245                                         if (cl.stats[STAT_ITEMS] & IT_INVISIBILITY)
1246                                         {
1247                                                 if (temp[0])
1248                                                         strlcat(temp, " ", sizeof(temp));
1249                                                 strlcat(temp, "eyes", sizeof(temp));
1250                                         }
1251                                         break;
1252                                 case 'w': // weapon status (outputs "SSG:NG:SNG:GL:RL:LG" with the text between : characters omitted if you lack the weapon)
1253                                         if (cl.stats[STAT_ITEMS] & IT_SUPER_SHOTGUN)
1254                                                 strlcat(temp, "SSG", sizeof(temp));
1255                                         strlcat(temp, ":", sizeof(temp));
1256                                         if (cl.stats[STAT_ITEMS] & IT_NAILGUN)
1257                                                 strlcat(temp, "NG", sizeof(temp));
1258                                         strlcat(temp, ":", sizeof(temp));
1259                                         if (cl.stats[STAT_ITEMS] & IT_SUPER_NAILGUN)
1260                                                 strlcat(temp, "SNG", sizeof(temp));
1261                                         strlcat(temp, ":", sizeof(temp));
1262                                         if (cl.stats[STAT_ITEMS] & IT_GRENADE_LAUNCHER)
1263                                                 strlcat(temp, "GL", sizeof(temp));
1264                                         strlcat(temp, ":", sizeof(temp));
1265                                         if (cl.stats[STAT_ITEMS] & IT_ROCKET_LAUNCHER)
1266                                                 strlcat(temp, "RL", sizeof(temp));
1267                                         strlcat(temp, ":", sizeof(temp));
1268                                         if (cl.stats[STAT_ITEMS] & IT_LIGHTNING)
1269                                                 strlcat(temp, "LG", sizeof(temp));
1270                                         break;
1271                                 default:
1272                                         // not a recognized macro, print it as-is...
1273                                         temp[0] = s[0];
1274                                         temp[1] = s[1];
1275                                         temp[2] = 0;
1276                                         break;
1277                                 }
1278                                 // write the resulting text
1279                                 SZ_Write(&cls.netcon->message, (unsigned char *)temp, strlen(temp));
1280                                 s += 2;
1281                                 continue;
1282                         }
1283                         MSG_WriteByte(&cls.netcon->message, *s);
1284                         s++;
1285                 }
1286                 MSG_WriteByte(&cls.netcon->message, 0);
1287         }
1288         else // any other command is passed on as-is
1289                 SZ_Write(&cls.netcon->message, (const unsigned char *)s, (int)strlen(s) + 1);
1290 }
1291
1292 /*
1293 ===================
1294 Cmd_ForwardToServer
1295
1296 Sends the entire command line over to the server
1297 ===================
1298 */
1299 void Cmd_ForwardToServer (void)
1300 {
1301         const char *s;
1302         if (!strcasecmp(Cmd_Argv(0), "cmd"))
1303         {
1304                 // we want to strip off "cmd", so just send the args
1305                 s = Cmd_Argc() > 1 ? Cmd_Args() : "";
1306         }
1307         else
1308         {
1309                 // we need to keep the command name, so send Cmd_Argv(0), a space and then Cmd_Args()
1310                 s = va("%s %s", Cmd_Argv(0), Cmd_Argc() > 1 ? Cmd_Args() : "");
1311         }
1312         // don't send an empty forward message if the user tries "cmd" by itself
1313         if (!s || !*s)
1314                 return;
1315         Cmd_ForwardStringToServer(s);
1316 }
1317
1318
1319 /*
1320 ================
1321 Cmd_CheckParm
1322
1323 Returns the position (1 to argc-1) in the command's argument list
1324 where the given parameter apears, or 0 if not present
1325 ================
1326 */
1327
1328 int Cmd_CheckParm (const char *parm)
1329 {
1330         int i;
1331
1332         if (!parm)
1333         {
1334                 Con_Printf ("Cmd_CheckParm: NULL");
1335                 return 0;
1336         }
1337
1338         for (i = 1; i < Cmd_Argc (); i++)
1339                 if (!strcasecmp (parm, Cmd_Argv (i)))
1340                         return i;
1341
1342         return 0;
1343 }
1344