main/cmd.c

   1 #ifdef HAVE_CONFIG_H
   2 #include <conf.h>
   3 #endif
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <ctype.h>
   9
  10 #include "pstypes.h"
  11 #include "cmd.h"
  12 #include "console.h"
  13 #include "error.h"
  14 #include "u_mem.h"
  15 #include "strutil.h"
  16 #include "weapon.h"
  17 #include "key.h"
  18
  19
  20 typedef struct cmd_s
  21 {
  22         char          *name;
  23         cmd_handler_t function;
  24         struct cmd_s  *next;
  25 } cmd_t;
  26
  27 /* The list of cmds */
  28 static cmd_t *cmd_list = NULL;
  29
  30
  31 #define ALIAS_NAME_MAX 32
  32 typedef struct cmd_alias_s
  33 {
  34         char           name[ALIAS_NAME_MAX];
  35         char           *value;
  36         struct cmd_alias_s *next;
  37 } cmd_alias_t;
  38
  39 /* The list of aliases */
  40 static cmd_alias_t *cmd_alias_list = NULL;
  41
  42
  43 /* The list of keybindings */
  44 static char *cmd_keybinding_list[256];
  45
  46
  47 /* add a new console command */
  48 void cmd_addcommand(char *cmd_name, cmd_handler_t cmd_func)
  49 {
  50         cmd_t *cmd;
  51
  52         Assert(cmd_name != NULL);
  53
  54         for (cmd = cmd_list; cmd; cmd = cmd->next) {
  55                 if (!stricmp(cmd_name, cmd->name))
  56                 {
  57                         Int3();
  58                         con_printf(CON_NORMAL, "command %s already exists, not adding\n", cmd_name);
  59                         return;
  60                 }
  61         }
  62
  63         /* create command, insert at front of list */
  64         MALLOC(cmd, cmd_t, 1);
  65         cmd->name = cmd_name;
  66         cmd->function = cmd_func;
  67         cmd->next = cmd_list;
  68         con_printf(CON_DEBUG, "cmd_addcommand: added %s\n", cmd->name);
  69         cmd_list = cmd;
  70 }
  71
  72
  73 typedef struct cmd_queue_s
  74 {
  75         char *command_line;
  76         struct cmd_queue_s *next;
  77 } cmd_queue_t;
  78
  79 /* The list of commands to be executed */
  80 static cmd_queue_t *cmd_queue_head = NULL;
  81 static cmd_queue_t *cmd_queue_tail = NULL;
  82
  83
  84 /* execute a parsed command */
  85 void cmd_execute(int argc, char **argv)
  86 {
  87         cmd_t *cmd;
  88         cmd_alias_t *alias;
  89
  90         for (cmd = cmd_list; cmd; cmd = cmd->next) {
  91                 if (!stricmp(argv[0], cmd->name)) {
  92                         con_printf(CON_DEBUG, "cmd_execute: executing %s\n", argv[0]);
  93                         return cmd->function(argc, argv);
  94                 }
  95         }
  96
  97         for (alias = cmd_alias_list; alias; alias = alias->next) {
  98                 if (!stricmp(argv[0], alias->name)) {
  99                         con_printf(CON_DEBUG, "cmd_execute: pushing alias \"%s\": %s\n", alias->name, alias->value);
 100                         cmd_insert(alias->value);
 101                         return;
 102                 }
 103         }
 104
 105         /* Otherwise */
 106         if (argc > 1)  // set value of cvar
 107                 cvar_set(argv[0], argv[1]);
 108         con_printf(CON_VERBOSE, "%s: %f\n", argv[0], cvar(argv[0]));
 109 }
 110
 111
 112 /* Parse an input string */
 113 void cmd_parse(char *input)
 114 {
 115         char buffer[CMD_MAX_LENGTH];
 116         char *tokens[CMD_MAX_TOKENS];
 117         int num_tokens;
 118         int i, l;
 119         int quoted = 0;
 120
 121         Assert(input != NULL);
 122
 123         /* Strip leading spaces */
 124         for (i=0; isspace(input[i]); i++) ;
 125         strncpy( buffer, &input[i], CMD_MAX_LENGTH );
 126
 127         //printf("lead strip \"%s\"\n",buffer);
 128         l = strlen(buffer);
 129         /* If command is empty, give up */
 130         if (l==0) return;
 131
 132         /* Strip trailing spaces */
 133         for (i=l-1; i>0 && isspace(buffer[i]); i--) ;
 134         buffer[i+1] = 0;
 135         //printf("trail strip \"%s\"\n",buffer);
 136
 137         /* Split into tokens */
 138         l = strlen(buffer);
 139         num_tokens = 1;
 140
 141         tokens[0] = buffer;
 142         for (i=1; i<l; i++) {
 143                 if (buffer[i] == '"') {
 144                         quoted = 1 - quoted;
 145                         continue;
 146                 }
 147                 if ((isspace(buffer[i]) || buffer[i] == '=') && !quoted) {
 148                         buffer[i] = 0;
 149                         while (isspace(buffer[i+1]) && (i+1 < l)) i++;
 150                         tokens[num_tokens++] = &buffer[i+1];
 151                 }
 152         }
 153
 154         /* Check for matching commands */
 155         cmd_execute(num_tokens, tokens);
 156 }
 157
 158 void cmd_queue_process()
 159 {
 160         cmd_queue_t *cmd;
 161
 162         while (cmd_queue_head) {
 163                 cmd = cmd_queue_head;
 164                 cmd_queue_head = cmd_queue_head->next;
 165                 if (!cmd_queue_head)
 166                         cmd_queue_tail = NULL;
 167
 168                 con_printf(CON_DEBUG, "cmd_queue_process: processing %s\n", cmd->command_line);
 169                 cmd_parse(cmd->command_line);  // Note, this may change the queue
 170
 171                 d_free(cmd->command_line);
 172                 d_free(cmd);
 173         }
 174 }
 175
 176
 177 /* Add some commands to the queue to be executed */
 178 void cmd_enqueue(int insert, char *input)
 179 {
 180         cmd_queue_t *new, *head, *tail;
 181         char *line;
 182
 183         Assert(input != NULL);
 184         head = tail = NULL;
 185
 186         while (*input) {
 187                 int quoted = 0;
 188
 189                 /* Strip leading spaces */
 190                 while(isspace(*input) || *input == ';')
 191                         input++;
 192
 193                 /* If command is empty, give up */
 194                 if (! *input)
 195                         continue;
 196
 197                 /* Now at start of a command line */
 198                 line = input;
 199
 200                 /* Find the end of this line (\n, ;, or nul) */
 201                 do {
 202                         if (!*input)
 203                                 break;
 204                         if (*input == '"') {
 205                                 quoted = 1 - quoted;
 206                                 continue;
 207                         } else if ( *input == '\n' || (!quoted && *input == ';') ) {
 208                                 *input = 0;
 209                                 break;
 210                         }
 211                 } while (*input++);
 212
 213                 /* make a new queue item, add it to list */
 214                 MALLOC(new, cmd_queue_t, 1);
 215                 new->command_line = d_strdup(line);
 216                 new->next = NULL;
 217
 218                 if (!head)
 219                         head = new;
 220                 if (tail)
 221                         tail->next = new;
 222                 tail = new;
 223
 224                 con_printf(CON_DEBUG, "cmd_enqueue: adding %s\n", line);
 225         }
 226
 227         if (insert) {
 228                  /* add our list to the head of the main list */
 229                 if (cmd_queue_head)
 230                         tail->next = cmd_queue_head;
 231                 if (!cmd_queue_tail)
 232                         cmd_queue_tail = tail;
 233
 234                 cmd_queue_head = head;
 235                 con_printf(CON_DEBUG, "cmd_enqueue: added to front of list\n");
 236         } else {
 237                 /* add our list to the tail of the main list */
 238                 if (!cmd_queue_head)
 239                         cmd_queue_head = new;
 240                 if (cmd_queue_tail)
 241                         cmd_queue_tail->next = head;
 242
 243                 cmd_queue_tail = tail;
 244                 con_printf(CON_DEBUG, "cmd_enqueue: added to back of list\n");
 245         }
 246 }
 247
 248 void cmd_enqueuef(int insert, char *fmt, ...){
 249         va_list arglist;
 250         char buf[CMD_MAX_LENGTH];
 251
 252         va_start (arglist, fmt);
 253         vsnprintf (buf, CMD_MAX_LENGTH, fmt, arglist);
 254         va_end (arglist);
 255
 256         cmd_enqueue(insert, buf);
 257 }
 258
 259
 260 /* Attempt to autocomplete an input string */
 261 char *cmd_complete(char *input)
 262 {
 263         return cvar_complete(input);
 264 }
 265
 266
 267 int cmd_handle_keybinding(unsigned char key)
 268 {
 269         if (cmd_keybinding_list[key]) {
 270                 cmd_insert(cmd_keybinding_list[key]);
 271                 return 1;
 272         }
 273         return 0;
 274 }
 275
 276
 277
 278 /* alias */
 279 void cmd_alias(int argc, char **argv)
 280 {
 281         cmd_alias_t *alias;
 282         char buf[CMD_MAX_LENGTH] = "";
 283         int i;
 284
 285         if (argc < 2)
 286         {
 287                 con_printf(CON_NORMAL, "aliases:\n");
 288                 for (alias = cmd_alias_list; alias; alias = alias->next)
 289                         con_printf(CON_NORMAL, "%s: %s\n", alias->name, alias->value);
 290                 return;
 291         }
 292
 293         for (i = 2; i < argc; i++) {
 294                 if (i > 2)
 295                         strncat(buf, " ", CMD_MAX_LENGTH);
 296                 strncat(buf, argv[i], CMD_MAX_LENGTH);
 297         }
 298
 299         for (alias = cmd_alias_list; alias; alias = alias->next) {
 300                 if (!stricmp(argv[1], alias->name))
 301                 {
 302                         d_free(alias->value);
 303                         alias->value = d_strdup(buf);
 304                         return;
 305                 }
 306         }
 307
 308         MALLOC(alias, cmd_alias_t, 1);
 309         strncpy(alias->name, argv[1], ALIAS_NAME_MAX);
 310         alias->value = d_strdup(buf);
 311         alias->next = cmd_alias_list;
 312         cmd_alias_list = alias;
 313 }
 314
 315 /* bind */
 316 /* FIXME: key_text is not really adequate for this */
 317 void cmd_bind(int argc, char **argv)
 318 {
 319         char buf[CMD_MAX_LENGTH] = "";
 320         unsigned char key = 0;
 321         int i;
 322
 323         if (argc < 2)
 324         {
 325                 con_printf(CON_NORMAL, "key bindings:\n");
 326                 for (i = 0; i < 256; i++) {
 327                         if (!cmd_keybinding_list[i])
 328                                 continue;
 329                         con_printf(CON_NORMAL, "%s: %s\n", key_text[i], cmd_keybinding_list[i]);
 330                 }
 331                 return;
 332         }
 333
 334         for (i = 2; i < argc; i++) {
 335                 if (i > 2)
 336                         strncat(buf, " ", CMD_MAX_LENGTH);
 337                 strncat(buf, argv[i], CMD_MAX_LENGTH);
 338         }
 339
 340         for (i = 0; i < 256; i++) {
 341                 if (!stricmp(argv[1], key_text[i])) {
 342                         key = i;
 343                         break;
 344                 }
 345         }
 346
 347         if (!key) {
 348                 con_printf(CON_CRITICAL, "bind: key %s not found\n", argv[1]);
 349                 return;
 350         }
 351
 352         if (cmd_keybinding_list[key])
 353                 d_free(cmd_keybinding_list[key]);
 354         cmd_keybinding_list[key] = d_strdup(buf);
 355 }
 356
 357 /* +/- actions */
 358 int Console_button_states[CMD_NUM_BUTTONS];
 359 void cmd_attack_on(int argc, char **argv) { Console_button_states[CMD_ATTACK] = 1; }
 360 void cmd_attack_off(int argc, char **argv) { Console_button_states[CMD_ATTACK] = 0; }
 361 void cmd_attack2_on(int argc, char **argv) { Console_button_states[CMD_ATTACK2] = 1; }
 362 void cmd_attack2_off(int argc, char **argv) { Console_button_states[CMD_ATTACK2] = 0; }
 363
 364 /* weapon select */
 365 void cmd_impulse(int argc, char**argv) {
 366         if (argc < 2)
 367                 return;
 368         int n = atoi(argv[1]);
 369         if (n >= 1 && n <= 20) {
 370                 select_weapon((n-1) % 10, (n-1) / 10, 0, 1);
 371         }
 372 }
 373
 374 /* echo to console */
 375 void cmd_echo(int argc, char **argv) {
 376         char buf[CMD_MAX_LENGTH] = "";
 377         int i;
 378         for (i = 1; i < argc; i++) {
 379                 if (i > 1)
 380                         strncat(buf, " ", CMD_MAX_LENGTH);
 381                 strncat(buf, argv[i], CMD_MAX_LENGTH);
 382         }
 383         con_printf(CON_NORMAL, "%s\n", buf);
 384 }
 385
 386 /* execute script */
 387 void cmd_exec(int argc, char **argv) {
 388         cmd_queue_t *new, *head, *tail;
 389         PHYSFS_File *f;
 390         char line[CMD_MAX_LENGTH] = "";
 391
 392         if (argc < 2)
 393                 return;
 394
 395         head = tail = NULL;
 396
 397         f = PHYSFSX_openReadBuffered(argv[1]);
 398         if (!f) {
 399                 con_printf(CON_CRITICAL, "exec: %s not found\n", argv[1]);
 400                 return;
 401         }
 402         while (PHYSFSX_gets(f, line)) {
 403                 /* make a new queue item, add it to list */
 404                 MALLOC(new, cmd_queue_t, 1);
 405                 new->command_line = d_strdup(line);
 406                 new->next = NULL;
 407
 408                 if (!head)
 409                         head = new;
 410                 if (tail)
 411                         tail->next = new;
 412                 tail = new;
 413
 414                 con_printf(CON_DEBUG, "cmd_exec: adding %s\n", line);
 415         }
 416         PHYSFS_close(f);
 417
 418         /* add our list to the head of the main list */
 419         if (cmd_queue_head)
 420                 tail->next = cmd_queue_head;
 421         if (!cmd_queue_tail)
 422                 cmd_queue_tail = tail;
 423
 424         cmd_queue_head = head;
 425         con_printf(CON_DEBUG, "cmd_exec: added to front of list\n");
 426 }
 427
 428
 429 void cmd_free(void)
 430 {
 431         int i;
 432         void *p, *temp;
 433
 434         p = cmd_list;
 435         while (p) {
 436                 temp = p;
 437                 p = ((cmd_t *)p)->next;
 438                 d_free(temp);
 439         }
 440
 441         p = cmd_alias_list;
 442         while (p) {
 443                 d_free(((cmd_alias_t *)p)->value);
 444                 temp = p;
 445                 p = ((cmd_alias_t *)p)->next;
 446                 d_free(temp);
 447         }
 448
 449         for (i = 0; i < 256; i++)
 450                 if (cmd_keybinding_list[i])
 451                         d_free(cmd_keybinding_list[i]);
 452 }
 453
 454
 455 void cmd_init(void){
 456         memset(Console_button_states, 0, sizeof(int) * CMD_NUM_BUTTONS);
 457
 458         cmd_addcommand("alias", cmd_alias);
 459         cmd_addcommand("bind", cmd_bind);
 460
 461         cmd_addcommand("+attack", cmd_attack_on);
 462         cmd_addcommand("-attack", cmd_attack_off);
 463         cmd_addcommand("+attack2", cmd_attack2_on);
 464         cmd_addcommand("-attack2", cmd_attack2_off);
 465
 466         cmd_addcommand("impulse", cmd_impulse);
 467
 468         cmd_addcommand("echo", cmd_echo);
 469
 470         cmd_addcommand("exec", cmd_exec);
 471
 472         atexit(cmd_free);
 473 }