-
Notifications
You must be signed in to change notification settings - Fork 0
/
cmd.c
571 lines (461 loc) · 9.25 KB
/
cmd.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
#include "quakedef.h"
void Cmd_ForwardToServer (void);
#define MAX_ALIAS_NAME 32
typedef struct cmdalias_s
{
struct cmdalias_s *next;
char name[MAX_ALIAS_NAME];
char *value;
} cmdalias_t;
static cmdalias_t *cmd_alias;
static bool cmd_wait;
//=============================================================================
/*
============
Cmd_Wait_f
Causes execution of the remainder of the command buffer to be delayed until
next frame. This allows commands like:
bind g "impulse 5 ; +attack ; wait ; -attack ; impulse 2"
============
*/
static void Cmd_Wait_f (void)
{
cmd_wait = true;
}
/*
=============================================================================
COMMAND BUFFER
=============================================================================
*/
static sizebuf_t cmd_text;
/*
============
Cbuf_Init
============
*/
void Cbuf_Init (void)
{
SZ_Alloc (&cmd_text, 65536); // space for commands and script files
}
/*
============
Cbuf_AddText
Adds command text at the end of the buffer
============
*/
void Cbuf_AddText (char *text)
{
int l;
l = strlen(text);
if (cmd_text.cursize + l >= cmd_text.maxsize)
{
Con_Printf ("Cbuf_AddText: overflow\n");
return;
}
SZ_Write (&cmd_text, text, strlen(text));
}
/*
============
Cbuf_InsertText
Adds command text immediately after the current command
Adds a \n to the text
FIXME: actually change the command buffer to do less copying
============
*/
void Cbuf_InsertText (char *text)
{
char *temp = nil;
int templen;
// copy off any commands still remaining in the exec buffer
templen = cmd_text.cursize;
if (templen)
{
temp = Z_Malloc (templen);
memcpy(temp, cmd_text.data, templen);
SZ_Clear (&cmd_text);
}
// add the entire text of the file
Cbuf_AddText (text);
// add the copied off data
if (templen)
{
SZ_Write (&cmd_text, temp, templen);
Z_Free (temp);
}
}
/*
============
Cbuf_Execute
============
*/
void Cbuf_Execute (void)
{
int i;
char *text;
char line[1024];
int quotes;
while (cmd_text.cursize)
{
// 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')
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, alias) 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;
memcpy(text, text+i, cmd_text.cursize);
}
// execute the command line
Cmd_ExecuteString (line, src_command);
if (cmd_wait)
{ // skip out while text still remains in buffer, leaving it
// for next frame
cmd_wait = false;
break;
}
}
}
/*
==============================================================================
SCRIPT COMMANDS
==============================================================================
*/
/*
===============
Cmd_Exec_f
===============
*/
void Cmd_Exec_f (void)
{
char *f;
void *mark;
if (Cmd_Argc () != 2)
{
Con_Printf ("exec <filename> : execute a script file\n");
return;
}
mark = Hunk_Mark ();
f = loadhunklmp(Cmd_Argv(1), nil);
if(f == nil){
Con_Printf(va("exec: %s\n", lerr()));
return;
}
Con_Printf ("execing %s\n",Cmd_Argv(1));
Cbuf_InsertText (f);
Hunk_FreeToMark (mark);
}
/*
===============
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++)
Con_Printf ("%s ",Cmd_Argv(i));
Con_Printf ("\n");
}
/*
===============
Cmd_Alias_f
Creates a new command that executes a command string (possibly ; seperated)
===============
*/
char *CopyString (char *in)
{
char *out;
out = Z_Malloc (strlen(in)+1);
strcpy (out, in);
return out;
}
void Cmd_Alias_f (void)
{
cmdalias_t *a;
char cmd[1024];
int i, c;
char *s;
if (Cmd_Argc() == 1)
{
Con_Printf ("Current alias commands:\n");
for (a = cmd_alias ; a ; a=a->next)
Con_Printf ("%s : %s\n", a->name, a->value);
return;
}
s = Cmd_Argv(1);
if (strlen(s) >= MAX_ALIAS_NAME)
{
Con_Printf ("Alias name is too long\n");
return;
}
// if the alias already exists, reuse it
for (a = cmd_alias ; a ; a=a->next)
{
if(strcmp(s, a->name) == 0)
{
Z_Free (a->value);
break;
}
}
if (a == nil)
{
a = Z_Malloc(sizeof *a);
a->next = cmd_alias;
cmd_alias = a;
}
strcpy (a->name, s);
// copy the rest of the command line
cmd[0] = 0; // start out with a null string
c = Cmd_Argc();
for (i=2 ; i< c ; i++)
{
strcat (cmd, Cmd_Argv(i));
if (i != c)
strcat (cmd, " ");
}
strcat (cmd, "\n");
a->value = CopyString (cmd);
}
/*
=============================================================================
COMMAND EXECUTION
=============================================================================
*/
typedef struct cmd_function_s
{
struct cmd_function_s *next;
char *name;
xcommand_t function;
} cmd_function_t;
#define MAX_ARGS 80
static int cmd_argc;
static char *cmd_argv[MAX_ARGS];
static char *cmd_null_string = "";
static char *cmd_args = nil;
cmd_source_t cmd_source;
static cmd_function_t *cmd_functions; // possible commands to execute
/*
============
Cmd_Init
============
*/
void Cmd_Init (void)
{
Cmd_AddCommand ("exec",Cmd_Exec_f);
Cmd_AddCommand ("echo",Cmd_Echo_f);
Cmd_AddCommand ("alias",Cmd_Alias_f);
Cmd_AddCommand ("cmd", Cmd_ForwardToServer);
Cmd_AddCommand ("wait", Cmd_Wait_f);
}
/*
============
Cmd_Argc
============
*/
int Cmd_Argc (void)
{
return cmd_argc;
}
/*
============
Cmd_Argv
============
*/
char *Cmd_Argv (int arg)
{
if (arg >= cmd_argc)
return cmd_null_string;
return cmd_argv[arg];
}
/*
============
Cmd_Args
============
*/
char *Cmd_Args (void)
{
return cmd_args;
}
/*
============
Cmd_TokenizeString
Parses the given string into command line tokens.
============
*/
void Cmd_TokenizeString (char *text)
{
int i;
// clear the args from the last string
for (i=0 ; i<cmd_argc ; i++)
Z_Free (cmd_argv[i]);
cmd_argc = 0;
cmd_args = nil;
while (1)
{
// skip whitespace up to a /n
while (*text && *text <= ' ' && *text != '\n')
{
text++;
}
if (*text == '\n') // a newline seperates commands in the buffer
return;
if (!*text)
return;
if (cmd_argc == 1)
cmd_args = text;
text = COM_Parse (text);
if (!text)
return;
if (cmd_argc < MAX_ARGS)
{
cmd_argv[cmd_argc] = Z_Malloc(strlen(com_token)+1);
strcpy(cmd_argv[cmd_argc], com_token);
cmd_argc++;
}
}
}
/*
============
Cmd_AddCommand
============
*/
void Cmd_AddCommand (char *cmd_name, xcommand_t function)
{
cmd_function_t *cmd;
if (host_initialized) // because hunk allocation would get stomped
fatal ("Cmd_AddCommand after host_initialized");
// fail if the command is a variable name
if (Cvar_VariableString(cmd_name)[0])
{
Con_Printf ("Cmd_AddCommand: %s already defined as a var\n", cmd_name);
return;
}
// fail if the command already exists
for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
{
if(strcmp(cmd_name, cmd->name) == 0)
{
Con_Printf ("Cmd_AddCommand: %s already defined\n", cmd_name);
return;
}
}
cmd = Hunk_Alloc(sizeof *cmd);
cmd->name = cmd_name;
cmd->function = function;
cmd->next = cmd_functions;
cmd_functions = cmd;
}
/*
============
Cmd_Exists
============
*/
bool Cmd_Exists (char *cmd_name)
{
cmd_function_t *cmd;
for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
{
if(strcmp(cmd_name, cmd->name) == 0)
return true;
}
return false;
}
/*
============
Cmd_CompleteCommand
============
*/
char *Cmd_CompleteCommand (char *partial)
{
cmd_function_t *cmd;
int len;
len = strlen(partial);
if (!len)
return nil;
// check functions
for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
if(strncmp(partial, cmd->name, len) == 0)
return cmd->name;
return nil;
}
/*
============
Cmd_ExecuteString
A complete command line has been parsed, so try to execute it
FIXME: lookupnoadd the token to speed search?
============
*/
void Cmd_ExecuteString (char *text, cmd_source_t src)
{
cmd_function_t *cmd;
cmdalias_t *a;
cmd_source = src;
Cmd_TokenizeString (text);
// execute the command line
if (!Cmd_Argc())
return; // no tokens
// check functions
for (cmd=cmd_functions ; cmd ; cmd=cmd->next)
{
if(cistrcmp(cmd_argv[0],cmd->name) == 0)
{
cmd->function ();
return;
}
}
// check alias
for (a=cmd_alias ; a ; a=a->next)
{
if(cistrcmp(cmd_argv[0], a->name) == 0)
{
Cbuf_InsertText (a->value);
return;
}
}
// check cvars
if (!Cvar_Command ())
Con_Printf ("Unknown command \"%s\": %s\n", Cmd_Argv(0), text);
}
/*
===================
Cmd_ForwardToServer
Sends the entire command line over to the server
===================
*/
void Cmd_ForwardToServer (void)
{
if (cls.state != ca_connected)
{
Con_Printf ("Can't \"%s\", not connected\n", Cmd_Argv(0));
return;
}
if (cls.demoplayback)
return; // not really connected
MSG_WriteByte (&cls.message, clc_stringcmd);
if(cistrcmp(Cmd_Argv(0), "cmd") != 0)
{
SZ_Print (&cls.message, Cmd_Argv(0));
SZ_Print (&cls.message, " ");
}
if (Cmd_Argc() > 1)
SZ_Print (&cls.message, Cmd_Args());
else
SZ_Print (&cls.message, "\n");
}