| 1 | /* |
| 2 | * tclCmdIL.c -- |
| 3 | * |
| 4 | * This file contains the top-level command routines for most of |
| 5 | * the Tcl built-in commands whose names begin with the letters |
| 6 | * I through L. It contains only commands in the generic core |
| 7 | * (i.e. those that don't depend much upon UNIX facilities). |
| 8 | * |
| 9 | * Copyright 1987-1991 Regents of the University of California |
| 10 | * Permission to use, copy, modify, and distribute this |
| 11 | * software and its documentation for any purpose and without |
| 12 | * fee is hereby granted, provided that the above copyright |
| 13 | * notice appear in all copies. The University of California |
| 14 | * makes no representations about the suitability of this |
| 15 | * software for any purpose. It is provided "as is" without |
| 16 | * express or implied warranty. |
| 17 | */ |
| 18 | |
| 19 | #ifndef lint |
| 20 | static char rcsid[] = "$Header: /user6/ouster/tcl/RCS/tclCmdIL.c,v 1.84 91/12/06 10:42:36 ouster Exp $ SPRITE (Berkeley)"; |
| 21 | #endif |
| 22 | |
| 23 | #include "tclint.h" |
| 24 | |
| 25 | /* |
| 26 | * Global absolute file name: |
| 27 | */ |
| 28 | |
| 29 | char *TCL_Library = TCL_LIBRARY; |
| 30 | |
| 31 | /* |
| 32 | * Forward declarations for procedures defined in this file: |
| 33 | */ |
| 34 | |
| 35 | static int SortCompareProc _ANSI_ARGS_((CONST VOID *first, |
| 36 | CONST VOID *second)); |
| 37 | \f |
| 38 | /* |
| 39 | *---------------------------------------------------------------------- |
| 40 | * |
| 41 | * Tcl_IfCmd -- |
| 42 | * |
| 43 | * This procedure is invoked to process the "if" Tcl command. |
| 44 | * See the user documentation for details on what it does. |
| 45 | * |
| 46 | * Results: |
| 47 | * A standard Tcl result. |
| 48 | * |
| 49 | * Side effects: |
| 50 | * See the user documentation. |
| 51 | * |
| 52 | *---------------------------------------------------------------------- |
| 53 | */ |
| 54 | |
| 55 | /* ARGSUSED */ |
| 56 | int |
| 57 | Tcl_IfCmd(dummy, interp, argc, argv) |
| 58 | ClientData dummy; /* Not used. */ |
| 59 | Tcl_Interp *interp; /* Current interpreter. */ |
| 60 | int argc; /* Number of arguments. */ |
| 61 | char **argv; /* Argument strings. */ |
| 62 | { |
| 63 | char *condition, *ifPart, *elsePart, *cmd, *name; |
| 64 | char *clause; |
| 65 | int result, value; |
| 66 | |
| 67 | name = argv[0]; |
| 68 | if (argc < 3) { |
| 69 | ifSyntax: |
| 70 | Tcl_AppendResult(interp, "wrong # args: should be \"", name, |
| 71 | " bool ?then? command ?else? ?command?\"", (char *) NULL); |
| 72 | return TCL_ERROR; |
| 73 | } |
| 74 | condition = argv[1]; |
| 75 | argc -= 2; |
| 76 | argv += 2; |
| 77 | if ((**argv == 't') && (strncmp(*argv, "then", strlen(*argv)) == 0)) { |
| 78 | argc--; |
| 79 | argv++; |
| 80 | } |
| 81 | if (argc < 1) { |
| 82 | goto ifSyntax; |
| 83 | } |
| 84 | ifPart = *argv; |
| 85 | argv++; |
| 86 | argc--; |
| 87 | if (argc == 0) { |
| 88 | elsePart = ""; |
| 89 | } else { |
| 90 | if ((**argv == 'e') && (strncmp(*argv, "else", strlen(*argv)) == 0)) { |
| 91 | argc--; |
| 92 | argv++; |
| 93 | } |
| 94 | if (argc != 1) { |
| 95 | goto ifSyntax; |
| 96 | } |
| 97 | elsePart = *argv; |
| 98 | } |
| 99 | |
| 100 | cmd = ifPart; |
| 101 | clause = "\"then\" clause"; |
| 102 | result = Tcl_ExprBoolean(interp, condition, &value); |
| 103 | if (result != TCL_OK) { |
| 104 | if (result == TCL_ERROR) { |
| 105 | char msg[60]; |
| 106 | sprintf(msg, "\n (\"if\" test line %d)", interp->errorLine); |
| 107 | Tcl_AddErrorInfo(interp, msg); |
| 108 | } |
| 109 | return result; |
| 110 | } |
| 111 | if (value == 0) { |
| 112 | cmd = elsePart; |
| 113 | clause = "\"else\" clause"; |
| 114 | } |
| 115 | if (*cmd == 0) { |
| 116 | return TCL_OK; |
| 117 | } |
| 118 | result = Tcl_Eval(interp, cmd, 0, (char **) NULL); |
| 119 | if (result == TCL_ERROR) { |
| 120 | char msg[60]; |
| 121 | sprintf(msg, "\n (%s line %d)", clause, interp->errorLine); |
| 122 | Tcl_AddErrorInfo(interp, msg); |
| 123 | } |
| 124 | return result; |
| 125 | } |
| 126 | \f |
| 127 | /* |
| 128 | *---------------------------------------------------------------------- |
| 129 | * |
| 130 | * Tcl_IncrCmd -- |
| 131 | * |
| 132 | * This procedure is invoked to process the "incr" Tcl command. |
| 133 | * See the user documentation for details on what it does. |
| 134 | * |
| 135 | * Results: |
| 136 | * A standard Tcl result. |
| 137 | * |
| 138 | * Side effects: |
| 139 | * See the user documentation. |
| 140 | * |
| 141 | *---------------------------------------------------------------------- |
| 142 | */ |
| 143 | |
| 144 | /* ARGSUSED */ |
| 145 | int |
| 146 | Tcl_IncrCmd(dummy, interp, argc, argv) |
| 147 | ClientData dummy; /* Not used. */ |
| 148 | Tcl_Interp *interp; /* Current interpreter. */ |
| 149 | int argc; /* Number of arguments. */ |
| 150 | char **argv; /* Argument strings. */ |
| 151 | { |
| 152 | int value; |
| 153 | char *oldString, *result; |
| 154 | char newString[30]; |
| 155 | |
| 156 | if ((argc != 2) && (argc != 3)) { |
| 157 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 158 | " varName ?increment?\"", (char *) NULL); |
| 159 | return TCL_ERROR; |
| 160 | } |
| 161 | |
| 162 | oldString = Tcl_GetVar(interp, argv[1], TCL_LEAVE_ERR_MSG); |
| 163 | if (oldString == NULL) { |
| 164 | return TCL_ERROR; |
| 165 | } |
| 166 | if (Tcl_GetInt(interp, oldString, &value) != TCL_OK) { |
| 167 | Tcl_AddErrorInfo(interp, |
| 168 | "\n (reading value of variable to increment)"); |
| 169 | return TCL_ERROR; |
| 170 | } |
| 171 | if (argc == 2) { |
| 172 | value += 1; |
| 173 | } else { |
| 174 | int increment; |
| 175 | |
| 176 | if (Tcl_GetInt(interp, argv[2], &increment) != TCL_OK) { |
| 177 | Tcl_AddErrorInfo(interp, |
| 178 | "\n (reading increment)"); |
| 179 | return TCL_ERROR; |
| 180 | } |
| 181 | value += increment; |
| 182 | } |
| 183 | sprintf(newString, "%d", value); |
| 184 | result = Tcl_SetVar(interp, argv[1], newString, TCL_LEAVE_ERR_MSG); |
| 185 | if (result == NULL) { |
| 186 | return TCL_ERROR; |
| 187 | } |
| 188 | interp->result = result; |
| 189 | return TCL_OK; |
| 190 | } |
| 191 | \f |
| 192 | /* |
| 193 | *---------------------------------------------------------------------- |
| 194 | * |
| 195 | * Tcl_InfoCmd -- |
| 196 | * |
| 197 | * This procedure is invoked to process the "info" Tcl command. |
| 198 | * See the user documentation for details on what it does. |
| 199 | * |
| 200 | * Results: |
| 201 | * A standard Tcl result. |
| 202 | * |
| 203 | * Side effects: |
| 204 | * See the user documentation. |
| 205 | * |
| 206 | *---------------------------------------------------------------------- |
| 207 | */ |
| 208 | |
| 209 | /* ARGSUSED */ |
| 210 | int |
| 211 | Tcl_InfoCmd(dummy, interp, argc, argv) |
| 212 | ClientData dummy; /* Not used. */ |
| 213 | Tcl_Interp *interp; /* Current interpreter. */ |
| 214 | int argc; /* Number of arguments. */ |
| 215 | char **argv; /* Argument strings. */ |
| 216 | { |
| 217 | register Interp *iPtr = (Interp *) interp; |
| 218 | int length; |
| 219 | char c; |
| 220 | Arg *argPtr; |
| 221 | Proc *procPtr; |
| 222 | Var *varPtr; |
| 223 | Command *cmdPtr; |
| 224 | Tcl_HashEntry *hPtr; |
| 225 | Tcl_HashSearch search; |
| 226 | |
| 227 | if (argc < 2) { |
| 228 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 229 | " option ?arg arg ...?\"", (char *) NULL); |
| 230 | return TCL_ERROR; |
| 231 | } |
| 232 | c = argv[1][0]; |
| 233 | length = strlen(argv[1]); |
| 234 | if ((c == 'a') && (strncmp(argv[1], "args", length)) == 0) { |
| 235 | if (argc != 3) { |
| 236 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
| 237 | argv[0], " args procname\"", (char *) NULL); |
| 238 | return TCL_ERROR; |
| 239 | } |
| 240 | procPtr = TclFindProc(iPtr, argv[2]); |
| 241 | if (procPtr == NULL) { |
| 242 | infoNoSuchProc: |
| 243 | Tcl_AppendResult(interp, "\"", argv[2], |
| 244 | "\" isn't a procedure", (char *) NULL); |
| 245 | return TCL_ERROR; |
| 246 | } |
| 247 | for (argPtr = procPtr->argPtr; argPtr != NULL; |
| 248 | argPtr = argPtr->nextPtr) { |
| 249 | Tcl_AppendElement(interp, argPtr->name, 0); |
| 250 | } |
| 251 | return TCL_OK; |
| 252 | } else if ((c == 'b') && (strncmp(argv[1], "body", length)) == 0) { |
| 253 | if (argc != 3) { |
| 254 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 255 | " body procname\"", (char *) NULL); |
| 256 | return TCL_ERROR; |
| 257 | } |
| 258 | procPtr = TclFindProc(iPtr, argv[2]); |
| 259 | if (procPtr == NULL) { |
| 260 | goto infoNoSuchProc; |
| 261 | } |
| 262 | iPtr->result = procPtr->command; |
| 263 | return TCL_OK; |
| 264 | } else if ((c == 'c') && (strncmp(argv[1], "cmdcount", length) == 0) |
| 265 | && (length >= 2)) { |
| 266 | if (argc != 2) { |
| 267 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 268 | " cmdcount\"", (char *) NULL); |
| 269 | return TCL_ERROR; |
| 270 | } |
| 271 | sprintf(iPtr->result, "%d", iPtr->cmdCount); |
| 272 | return TCL_OK; |
| 273 | } else if ((c == 'c') && (strncmp(argv[1], "commands", length) == 0) |
| 274 | && (length >= 2)){ |
| 275 | if (argc > 3) { |
| 276 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 277 | " commands [pattern]\"", (char *) NULL); |
| 278 | return TCL_ERROR; |
| 279 | } |
| 280 | for (hPtr = Tcl_FirstHashEntry(&iPtr->commandTable, &search); |
| 281 | hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
| 282 | char *name = Tcl_GetHashKey(&iPtr->commandTable, hPtr); |
| 283 | if ((argc == 3) && !Tcl_StringMatch(name, argv[2])) { |
| 284 | continue; |
| 285 | } |
| 286 | Tcl_AppendElement(interp, name, 0); |
| 287 | } |
| 288 | return TCL_OK; |
| 289 | } else if ((c == 'd') && (strncmp(argv[1], "default", length)) == 0) { |
| 290 | if (argc != 5) { |
| 291 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
| 292 | argv[0], " default procname arg varname\"", |
| 293 | (char *) NULL); |
| 294 | return TCL_ERROR; |
| 295 | } |
| 296 | procPtr = TclFindProc(iPtr, argv[2]); |
| 297 | if (procPtr == NULL) { |
| 298 | goto infoNoSuchProc; |
| 299 | } |
| 300 | for (argPtr = procPtr->argPtr; ; argPtr = argPtr->nextPtr) { |
| 301 | if (argPtr == NULL) { |
| 302 | Tcl_AppendResult(interp, "procedure \"", argv[2], |
| 303 | "\" doesn't have an argument \"", argv[3], |
| 304 | "\"", (char *) NULL); |
| 305 | return TCL_ERROR; |
| 306 | } |
| 307 | if (strcmp(argv[3], argPtr->name) == 0) { |
| 308 | if (argPtr->defValue != NULL) { |
| 309 | if (Tcl_SetVar((Tcl_Interp *) iPtr, argv[4], |
| 310 | argPtr->defValue, 0) == NULL) { |
| 311 | defStoreError: |
| 312 | Tcl_AppendResult(interp, |
| 313 | "couldn't store default value in variable \"", |
| 314 | argv[4], "\"", (char *) NULL); |
| 315 | return TCL_ERROR; |
| 316 | } |
| 317 | iPtr->result = "1"; |
| 318 | } else { |
| 319 | if (Tcl_SetVar((Tcl_Interp *) iPtr, argv[4], "", 0) |
| 320 | == NULL) { |
| 321 | goto defStoreError; |
| 322 | } |
| 323 | iPtr->result = "0"; |
| 324 | } |
| 325 | return TCL_OK; |
| 326 | } |
| 327 | } |
| 328 | } else if ((c == 'e') && (strncmp(argv[1], "exists", length) == 0)) { |
| 329 | char *p; |
| 330 | if (argc != 3) { |
| 331 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 332 | " exists varName\"", (char *) NULL); |
| 333 | return TCL_ERROR; |
| 334 | } |
| 335 | p = Tcl_GetVar((Tcl_Interp *) iPtr, argv[2], 0); |
| 336 | |
| 337 | /* |
| 338 | * The code below handles the special case where the name is for |
| 339 | * an array: Tcl_GetVar will reject this since you can't read |
| 340 | * an array variable without an index. |
| 341 | */ |
| 342 | |
| 343 | if (p == NULL) { |
| 344 | Tcl_HashEntry *hPtr; |
| 345 | Var *varPtr; |
| 346 | |
| 347 | if (strchr(argv[2], '(') != NULL) { |
| 348 | noVar: |
| 349 | iPtr->result = "0"; |
| 350 | return TCL_OK; |
| 351 | } |
| 352 | if (iPtr->varFramePtr == NULL) { |
| 353 | hPtr = Tcl_FindHashEntry(&iPtr->globalTable, argv[2]); |
| 354 | } else { |
| 355 | hPtr = Tcl_FindHashEntry(&iPtr->varFramePtr->varTable, argv[2]); |
| 356 | } |
| 357 | if (hPtr == NULL) { |
| 358 | goto noVar; |
| 359 | } |
| 360 | varPtr = (Var *) Tcl_GetHashValue(hPtr); |
| 361 | if (varPtr->flags & VAR_UPVAR) { |
| 362 | varPtr = (Var *) Tcl_GetHashValue(varPtr->value.upvarPtr); |
| 363 | } |
| 364 | if (!(varPtr->flags & VAR_ARRAY)) { |
| 365 | goto noVar; |
| 366 | } |
| 367 | } |
| 368 | iPtr->result = "1"; |
| 369 | return TCL_OK; |
| 370 | } else if ((c == 'g') && (strncmp(argv[1], "globals", length) == 0)) { |
| 371 | char *name; |
| 372 | |
| 373 | if (argc > 3) { |
| 374 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 375 | " globals [pattern]\"", (char *) NULL); |
| 376 | return TCL_ERROR; |
| 377 | } |
| 378 | for (hPtr = Tcl_FirstHashEntry(&iPtr->globalTable, &search); |
| 379 | hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
| 380 | varPtr = (Var *) Tcl_GetHashValue(hPtr); |
| 381 | if (varPtr->flags & VAR_UNDEFINED) { |
| 382 | continue; |
| 383 | } |
| 384 | name = Tcl_GetHashKey(&iPtr->globalTable, hPtr); |
| 385 | if ((argc == 3) && !Tcl_StringMatch(name, argv[2])) { |
| 386 | continue; |
| 387 | } |
| 388 | Tcl_AppendElement(interp, name, 0); |
| 389 | } |
| 390 | return TCL_OK; |
| 391 | } else if ((c == 'l') && (strncmp(argv[1], "level", length) == 0) |
| 392 | && (length >= 2)) { |
| 393 | if (argc == 2) { |
| 394 | if (iPtr->varFramePtr == NULL) { |
| 395 | iPtr->result = "0"; |
| 396 | } else { |
| 397 | sprintf(iPtr->result, "%d", iPtr->varFramePtr->level); |
| 398 | } |
| 399 | return TCL_OK; |
| 400 | } else if (argc == 3) { |
| 401 | int level; |
| 402 | CallFrame *framePtr; |
| 403 | |
| 404 | if (Tcl_GetInt(interp, argv[2], &level) != TCL_OK) { |
| 405 | return TCL_ERROR; |
| 406 | } |
| 407 | if (level <= 0) { |
| 408 | if (iPtr->varFramePtr == NULL) { |
| 409 | levelError: |
| 410 | Tcl_AppendResult(interp, "bad level \"", argv[2], |
| 411 | "\"", (char *) NULL); |
| 412 | return TCL_ERROR; |
| 413 | } |
| 414 | level += iPtr->varFramePtr->level; |
| 415 | } |
| 416 | for (framePtr = iPtr->varFramePtr; framePtr != NULL; |
| 417 | framePtr = framePtr->callerVarPtr) { |
| 418 | if (framePtr->level == level) { |
| 419 | break; |
| 420 | } |
| 421 | } |
| 422 | if (framePtr == NULL) { |
| 423 | goto levelError; |
| 424 | } |
| 425 | iPtr->result = Tcl_Merge(framePtr->argc, framePtr->argv); |
| 426 | iPtr->freeProc = (Tcl_FreeProc *) free; |
| 427 | return TCL_OK; |
| 428 | } |
| 429 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 430 | " level [number]\"", (char *) NULL); |
| 431 | return TCL_ERROR; |
| 432 | } else if ((c == 'l') && (strncmp(argv[1], "library", length) == 0) |
| 433 | && (length >= 2)) { |
| 434 | if (argc != 2) { |
| 435 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 436 | " library\"", (char *) NULL); |
| 437 | return TCL_ERROR; |
| 438 | } |
| 439 | #ifdef TCL_LIBRARY |
| 440 | interp->result = TCL_Library; |
| 441 | return TCL_OK; |
| 442 | #else |
| 443 | interp->result = "there is no Tcl library at this installation"; |
| 444 | return TCL_ERROR; |
| 445 | #endif |
| 446 | } else if ((c == 'l') && (strncmp(argv[1], "locals", length) == 0) |
| 447 | && (length >= 2)) { |
| 448 | char *name; |
| 449 | |
| 450 | if (argc > 3) { |
| 451 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 452 | " locals [pattern]\"", (char *) NULL); |
| 453 | return TCL_ERROR; |
| 454 | } |
| 455 | if (iPtr->varFramePtr == NULL) { |
| 456 | return TCL_OK; |
| 457 | } |
| 458 | for (hPtr = Tcl_FirstHashEntry(&iPtr->varFramePtr->varTable, &search); |
| 459 | hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
| 460 | varPtr = (Var *) Tcl_GetHashValue(hPtr); |
| 461 | if (varPtr->flags & (VAR_UNDEFINED|VAR_UPVAR)) { |
| 462 | continue; |
| 463 | } |
| 464 | name = Tcl_GetHashKey(&iPtr->varFramePtr->varTable, hPtr); |
| 465 | if ((argc == 3) && !Tcl_StringMatch(name, argv[2])) { |
| 466 | continue; |
| 467 | } |
| 468 | Tcl_AppendElement(interp, name, 0); |
| 469 | } |
| 470 | return TCL_OK; |
| 471 | } else if ((c == 'p') && (strncmp(argv[1], "procs", length)) == 0) { |
| 472 | if (argc > 3) { |
| 473 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 474 | " procs [pattern]\"", (char *) NULL); |
| 475 | return TCL_ERROR; |
| 476 | } |
| 477 | for (hPtr = Tcl_FirstHashEntry(&iPtr->commandTable, &search); |
| 478 | hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
| 479 | char *name = Tcl_GetHashKey(&iPtr->commandTable, hPtr); |
| 480 | |
| 481 | cmdPtr = (Command *) Tcl_GetHashValue(hPtr); |
| 482 | if (!TclIsProc(cmdPtr)) { |
| 483 | continue; |
| 484 | } |
| 485 | if ((argc == 3) && !Tcl_StringMatch(name, argv[2])) { |
| 486 | continue; |
| 487 | } |
| 488 | Tcl_AppendElement(interp, name, 0); |
| 489 | } |
| 490 | return TCL_OK; |
| 491 | } else if ((c == 's') && (strncmp(argv[1], "script", length) == 0)) { |
| 492 | if (argc != 2) { |
| 493 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
| 494 | argv[0], " script\"", (char *) NULL); |
| 495 | return TCL_ERROR; |
| 496 | } |
| 497 | if (iPtr->scriptFile != NULL) { |
| 498 | interp->result = iPtr->scriptFile; |
| 499 | } |
| 500 | return TCL_OK; |
| 501 | } else if ((c == 't') && (strncmp(argv[1], "tclversion", length) == 0)) { |
| 502 | if (argc != 2) { |
| 503 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
| 504 | argv[0], " tclversion\"", (char *) NULL); |
| 505 | return TCL_ERROR; |
| 506 | } |
| 507 | |
| 508 | /* |
| 509 | * Note: TCL_VERSION below is expected to be set with a "-D" |
| 510 | * switch in the Makefile. |
| 511 | */ |
| 512 | |
| 513 | strcpy(iPtr->result, TCL_VERSION); |
| 514 | return TCL_OK; |
| 515 | } else if ((c == 'v') && (strncmp(argv[1], "vars", length)) == 0) { |
| 516 | Tcl_HashTable *tablePtr; |
| 517 | char *name; |
| 518 | |
| 519 | if (argc > 3) { |
| 520 | Tcl_AppendResult(interp, "wrong # args: should be \"", |
| 521 | argv[0], " vars [pattern]\"", (char *) NULL); |
| 522 | return TCL_ERROR; |
| 523 | } |
| 524 | if (iPtr->varFramePtr == NULL) { |
| 525 | tablePtr = &iPtr->globalTable; |
| 526 | } else { |
| 527 | tablePtr = &iPtr->varFramePtr->varTable; |
| 528 | } |
| 529 | for (hPtr = Tcl_FirstHashEntry(tablePtr, &search); |
| 530 | hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { |
| 531 | varPtr = (Var *) Tcl_GetHashValue(hPtr); |
| 532 | if (varPtr->flags & VAR_UNDEFINED) { |
| 533 | continue; |
| 534 | } |
| 535 | name = Tcl_GetHashKey(tablePtr, hPtr); |
| 536 | if ((argc == 3) && !Tcl_StringMatch(name, argv[2])) { |
| 537 | continue; |
| 538 | } |
| 539 | Tcl_AppendElement(interp, name, 0); |
| 540 | } |
| 541 | return TCL_OK; |
| 542 | } else { |
| 543 | Tcl_AppendResult(interp, "bad option \"", argv[1], |
| 544 | "\": should be args, body, commands, cmdcount, default, ", |
| 545 | "exists, globals, level, library, locals, procs, ", |
| 546 | "script, tclversion, or vars", |
| 547 | (char *) NULL); |
| 548 | return TCL_ERROR; |
| 549 | } |
| 550 | } |
| 551 | \f |
| 552 | /* |
| 553 | *---------------------------------------------------------------------- |
| 554 | * |
| 555 | * Tcl_JoinCmd -- |
| 556 | * |
| 557 | * This procedure is invoked to process the "join" Tcl command. |
| 558 | * See the user documentation for details on what it does. |
| 559 | * |
| 560 | * Results: |
| 561 | * A standard Tcl result. |
| 562 | * |
| 563 | * Side effects: |
| 564 | * See the user documentation. |
| 565 | * |
| 566 | *---------------------------------------------------------------------- |
| 567 | */ |
| 568 | |
| 569 | /* ARGSUSED */ |
| 570 | int |
| 571 | Tcl_JoinCmd(dummy, interp, argc, argv) |
| 572 | ClientData dummy; /* Not used. */ |
| 573 | Tcl_Interp *interp; /* Current interpreter. */ |
| 574 | int argc; /* Number of arguments. */ |
| 575 | char **argv; /* Argument strings. */ |
| 576 | { |
| 577 | char *joinString; |
| 578 | char **listArgv; |
| 579 | int listArgc, i; |
| 580 | |
| 581 | if (argc == 2) { |
| 582 | joinString = " "; |
| 583 | } else if (argc == 3) { |
| 584 | joinString = argv[2]; |
| 585 | } else { |
| 586 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 587 | " list ?joinString?\"", (char *) NULL); |
| 588 | return TCL_ERROR; |
| 589 | } |
| 590 | |
| 591 | if (Tcl_SplitList(interp, argv[1], &listArgc, &listArgv) != TCL_OK) { |
| 592 | return TCL_ERROR; |
| 593 | } |
| 594 | for (i = 0; i < listArgc; i++) { |
| 595 | if (i == 0) { |
| 596 | Tcl_AppendResult(interp, listArgv[0], (char *) NULL); |
| 597 | } else { |
| 598 | Tcl_AppendResult(interp, joinString, listArgv[i], (char *) NULL); |
| 599 | } |
| 600 | } |
| 601 | ckfree((char *) listArgv); |
| 602 | return TCL_OK; |
| 603 | } |
| 604 | \f |
| 605 | /* |
| 606 | *---------------------------------------------------------------------- |
| 607 | * |
| 608 | * Tcl_LindexCmd -- |
| 609 | * |
| 610 | * This procedure is invoked to process the "lindex" Tcl command. |
| 611 | * See the user documentation for details on what it does. |
| 612 | * |
| 613 | * Results: |
| 614 | * A standard Tcl result. |
| 615 | * |
| 616 | * Side effects: |
| 617 | * See the user documentation. |
| 618 | * |
| 619 | *---------------------------------------------------------------------- |
| 620 | */ |
| 621 | |
| 622 | /* ARGSUSED */ |
| 623 | int |
| 624 | Tcl_LindexCmd(dummy, interp, argc, argv) |
| 625 | ClientData dummy; /* Not used. */ |
| 626 | Tcl_Interp *interp; /* Current interpreter. */ |
| 627 | int argc; /* Number of arguments. */ |
| 628 | char **argv; /* Argument strings. */ |
| 629 | { |
| 630 | char *p, *element; |
| 631 | int index, size, parenthesized, result; |
| 632 | |
| 633 | if (argc != 3) { |
| 634 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 635 | " list index\"", (char *) NULL); |
| 636 | return TCL_ERROR; |
| 637 | } |
| 638 | if (Tcl_GetInt(interp, argv[2], &index) != TCL_OK) { |
| 639 | return TCL_ERROR; |
| 640 | } |
| 641 | if (index < 0) { |
| 642 | return TCL_OK; |
| 643 | } |
| 644 | for (p = argv[1] ; index >= 0; index--) { |
| 645 | result = TclFindElement(interp, p, &element, &p, &size, |
| 646 | &parenthesized); |
| 647 | if (result != TCL_OK) { |
| 648 | return result; |
| 649 | } |
| 650 | } |
| 651 | if (size == 0) { |
| 652 | return TCL_OK; |
| 653 | } |
| 654 | if (size >= TCL_RESULT_SIZE) { |
| 655 | interp->result = (char *) ckalloc((unsigned) size+1); |
| 656 | interp->freeProc = (Tcl_FreeProc *) free; |
| 657 | } |
| 658 | if (parenthesized) { |
| 659 | memcpy((VOID *) interp->result, (VOID *) element, size); |
| 660 | interp->result[size] = 0; |
| 661 | } else { |
| 662 | TclCopyAndCollapse(size, element, interp->result); |
| 663 | } |
| 664 | return TCL_OK; |
| 665 | } |
| 666 | \f |
| 667 | /* |
| 668 | *---------------------------------------------------------------------- |
| 669 | * |
| 670 | * Tcl_LinsertCmd -- |
| 671 | * |
| 672 | * This procedure is invoked to process the "linsert" Tcl command. |
| 673 | * See the user documentation for details on what it does. |
| 674 | * |
| 675 | * Results: |
| 676 | * A standard Tcl result. |
| 677 | * |
| 678 | * Side effects: |
| 679 | * See the user documentation. |
| 680 | * |
| 681 | *---------------------------------------------------------------------- |
| 682 | */ |
| 683 | |
| 684 | /* ARGSUSED */ |
| 685 | int |
| 686 | Tcl_LinsertCmd(dummy, interp, argc, argv) |
| 687 | ClientData dummy; /* Not used. */ |
| 688 | Tcl_Interp *interp; /* Current interpreter. */ |
| 689 | int argc; /* Number of arguments. */ |
| 690 | char **argv; /* Argument strings. */ |
| 691 | { |
| 692 | char *p, *element, savedChar; |
| 693 | int i, index, count, result, size; |
| 694 | |
| 695 | if (argc < 4) { |
| 696 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 697 | " list index element ?element ...?\"", (char *) NULL); |
| 698 | return TCL_ERROR; |
| 699 | } |
| 700 | if (Tcl_GetInt(interp, argv[2], &index) != TCL_OK) { |
| 701 | return TCL_ERROR; |
| 702 | } |
| 703 | |
| 704 | /* |
| 705 | * Skip over the first "index" elements of the list, then add |
| 706 | * all of those elements to the result. |
| 707 | */ |
| 708 | |
| 709 | size = 0; |
| 710 | element = argv[1]; |
| 711 | for (count = 0, p = argv[1]; (count < index) && (*p != 0); count++) { |
| 712 | result = TclFindElement(interp, p, &element, &p, &size, (int *) NULL); |
| 713 | if (result != TCL_OK) { |
| 714 | return result; |
| 715 | } |
| 716 | } |
| 717 | if (*p == 0) { |
| 718 | Tcl_AppendResult(interp, argv[1], (char *) NULL); |
| 719 | } else { |
| 720 | char *end; |
| 721 | |
| 722 | end = element+size; |
| 723 | if (element != argv[1]) { |
| 724 | while ((*end != 0) && !isspace(*end)) { |
| 725 | end++; |
| 726 | } |
| 727 | } |
| 728 | savedChar = *end; |
| 729 | *end = 0; |
| 730 | Tcl_AppendResult(interp, argv[1], (char *) NULL); |
| 731 | *end = savedChar; |
| 732 | } |
| 733 | |
| 734 | /* |
| 735 | * Add the new list elements. |
| 736 | */ |
| 737 | |
| 738 | for (i = 3; i < argc; i++) { |
| 739 | Tcl_AppendElement(interp, argv[i], 0); |
| 740 | } |
| 741 | |
| 742 | /* |
| 743 | * Append the remainder of the original list. |
| 744 | */ |
| 745 | |
| 746 | if (*p != 0) { |
| 747 | Tcl_AppendResult(interp, " ", p, (char *) NULL); |
| 748 | } |
| 749 | return TCL_OK; |
| 750 | } |
| 751 | \f |
| 752 | /* |
| 753 | *---------------------------------------------------------------------- |
| 754 | * |
| 755 | * Tcl_ListCmd -- |
| 756 | * |
| 757 | * This procedure is invoked to process the "list" Tcl command. |
| 758 | * See the user documentation for details on what it does. |
| 759 | * |
| 760 | * Results: |
| 761 | * A standard Tcl result. |
| 762 | * |
| 763 | * Side effects: |
| 764 | * See the user documentation. |
| 765 | * |
| 766 | *---------------------------------------------------------------------- |
| 767 | */ |
| 768 | |
| 769 | /* ARGSUSED */ |
| 770 | int |
| 771 | Tcl_ListCmd(dummy, interp, argc, argv) |
| 772 | ClientData dummy; /* Not used. */ |
| 773 | Tcl_Interp *interp; /* Current interpreter. */ |
| 774 | int argc; /* Number of arguments. */ |
| 775 | char **argv; /* Argument strings. */ |
| 776 | { |
| 777 | if (argc < 2) { |
| 778 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 779 | " arg ?arg ...?\"", (char *) NULL); |
| 780 | return TCL_ERROR; |
| 781 | } |
| 782 | interp->result = Tcl_Merge(argc-1, argv+1); |
| 783 | interp->freeProc = (Tcl_FreeProc *) free; |
| 784 | return TCL_OK; |
| 785 | } |
| 786 | \f |
| 787 | /* |
| 788 | *---------------------------------------------------------------------- |
| 789 | * |
| 790 | * Tcl_LlengthCmd -- |
| 791 | * |
| 792 | * This procedure is invoked to process the "llength" Tcl command. |
| 793 | * See the user documentation for details on what it does. |
| 794 | * |
| 795 | * Results: |
| 796 | * A standard Tcl result. |
| 797 | * |
| 798 | * Side effects: |
| 799 | * See the user documentation. |
| 800 | * |
| 801 | *---------------------------------------------------------------------- |
| 802 | */ |
| 803 | |
| 804 | /* ARGSUSED */ |
| 805 | int |
| 806 | Tcl_LlengthCmd(dummy, interp, argc, argv) |
| 807 | ClientData dummy; /* Not used. */ |
| 808 | Tcl_Interp *interp; /* Current interpreter. */ |
| 809 | int argc; /* Number of arguments. */ |
| 810 | char **argv; /* Argument strings. */ |
| 811 | { |
| 812 | int count, result; |
| 813 | char *element, *p; |
| 814 | |
| 815 | if (argc != 2) { |
| 816 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 817 | " list\"", (char *) NULL); |
| 818 | return TCL_ERROR; |
| 819 | } |
| 820 | for (count = 0, p = argv[1]; *p != 0 ; count++) { |
| 821 | result = TclFindElement(interp, p, &element, &p, (int *) NULL, |
| 822 | (int *) NULL); |
| 823 | if (result != TCL_OK) { |
| 824 | return result; |
| 825 | } |
| 826 | if (*element == 0) { |
| 827 | break; |
| 828 | } |
| 829 | } |
| 830 | sprintf(interp->result, "%d", count); |
| 831 | return TCL_OK; |
| 832 | } |
| 833 | \f |
| 834 | /* |
| 835 | *---------------------------------------------------------------------- |
| 836 | * |
| 837 | * Tcl_LrangeCmd -- |
| 838 | * |
| 839 | * This procedure is invoked to process the "lrange" Tcl command. |
| 840 | * See the user documentation for details on what it does. |
| 841 | * |
| 842 | * Results: |
| 843 | * A standard Tcl result. |
| 844 | * |
| 845 | * Side effects: |
| 846 | * See the user documentation. |
| 847 | * |
| 848 | *---------------------------------------------------------------------- |
| 849 | */ |
| 850 | |
| 851 | /* ARGSUSED */ |
| 852 | int |
| 853 | Tcl_LrangeCmd(notUsed, interp, argc, argv) |
| 854 | ClientData notUsed; /* Not used. */ |
| 855 | Tcl_Interp *interp; /* Current interpreter. */ |
| 856 | int argc; /* Number of arguments. */ |
| 857 | char **argv; /* Argument strings. */ |
| 858 | { |
| 859 | int first, last, result; |
| 860 | char *begin, *end, c, *dummy; |
| 861 | int count; |
| 862 | |
| 863 | if (argc != 4) { |
| 864 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 865 | " list first last\"", (char *) NULL); |
| 866 | return TCL_ERROR; |
| 867 | } |
| 868 | if (Tcl_GetInt(interp, argv[2], &first) != TCL_OK) { |
| 869 | return TCL_ERROR; |
| 870 | } |
| 871 | if (first < 0) { |
| 872 | first = 0; |
| 873 | } |
| 874 | if ((*argv[3] == 'e') && (strncmp(argv[3], "end", strlen(argv[3])) == 0)) { |
| 875 | last = 1000000; |
| 876 | } else { |
| 877 | if (Tcl_GetInt(interp, argv[3], &last) != TCL_OK) { |
| 878 | Tcl_ResetResult(interp); |
| 879 | Tcl_AppendResult(interp, |
| 880 | "expected integer or \"end\" but got \"", |
| 881 | argv[3], "\"", (char *) NULL); |
| 882 | return TCL_ERROR; |
| 883 | } |
| 884 | } |
| 885 | if (first > last) { |
| 886 | return TCL_OK; |
| 887 | } |
| 888 | |
| 889 | /* |
| 890 | * Extract a range of fields. |
| 891 | */ |
| 892 | |
| 893 | for (count = 0, begin = argv[1]; count < first; count++) { |
| 894 | result = TclFindElement(interp, begin, &dummy, &begin, (int *) NULL, |
| 895 | (int *) NULL); |
| 896 | if (result != TCL_OK) { |
| 897 | return result; |
| 898 | } |
| 899 | if (*begin == 0) { |
| 900 | break; |
| 901 | } |
| 902 | } |
| 903 | for (count = first, end = begin; (count <= last) && (*end != 0); |
| 904 | count++) { |
| 905 | result = TclFindElement(interp, end, &dummy, &end, (int *) NULL, |
| 906 | (int *) NULL); |
| 907 | if (result != TCL_OK) { |
| 908 | return result; |
| 909 | } |
| 910 | } |
| 911 | |
| 912 | /* |
| 913 | * Chop off trailing spaces. |
| 914 | */ |
| 915 | |
| 916 | while (isspace(end[-1])) { |
| 917 | end--; |
| 918 | } |
| 919 | c = *end; |
| 920 | *end = 0; |
| 921 | Tcl_SetResult(interp, begin, TCL_VOLATILE); |
| 922 | *end = c; |
| 923 | return TCL_OK; |
| 924 | } |
| 925 | \f |
| 926 | /* |
| 927 | *---------------------------------------------------------------------- |
| 928 | * |
| 929 | * Tcl_LreplaceCmd -- |
| 930 | * |
| 931 | * This procedure is invoked to process the "lreplace" Tcl command. |
| 932 | * See the user documentation for details on what it does. |
| 933 | * |
| 934 | * Results: |
| 935 | * A standard Tcl result. |
| 936 | * |
| 937 | * Side effects: |
| 938 | * See the user documentation. |
| 939 | * |
| 940 | *---------------------------------------------------------------------- |
| 941 | */ |
| 942 | |
| 943 | /* ARGSUSED */ |
| 944 | int |
| 945 | Tcl_LreplaceCmd(notUsed, interp, argc, argv) |
| 946 | ClientData notUsed; /* Not used. */ |
| 947 | Tcl_Interp *interp; /* Current interpreter. */ |
| 948 | int argc; /* Number of arguments. */ |
| 949 | char **argv; /* Argument strings. */ |
| 950 | { |
| 951 | char *p1, *p2, *element, savedChar, *dummy; |
| 952 | int i, first, last, count, result, size; |
| 953 | |
| 954 | if (argc < 4) { |
| 955 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 956 | " list first last ?element element ...?\"", (char *) NULL); |
| 957 | return TCL_ERROR; |
| 958 | } |
| 959 | if (Tcl_GetInt(interp, argv[2], &first) != TCL_OK) { |
| 960 | return TCL_ERROR; |
| 961 | } |
| 962 | if (TclGetListIndex(interp, argv[3], &last) != TCL_OK) { |
| 963 | return TCL_ERROR; |
| 964 | } |
| 965 | if (first < 0) { |
| 966 | first = 0; |
| 967 | } |
| 968 | if (last < 0) { |
| 969 | last = 0; |
| 970 | } |
| 971 | if (first > last) { |
| 972 | Tcl_AppendResult(interp, "first index must not be greater than second", |
| 973 | (char *) NULL); |
| 974 | return TCL_ERROR; |
| 975 | } |
| 976 | |
| 977 | /* |
| 978 | * Skip over the elements of the list before "first". |
| 979 | */ |
| 980 | |
| 981 | size = 0; |
| 982 | element = argv[1]; |
| 983 | for (count = 0, p1 = argv[1]; (count < first) && (*p1 != 0); count++) { |
| 984 | result = TclFindElement(interp, p1, &element, &p1, &size, |
| 985 | (int *) NULL); |
| 986 | if (result != TCL_OK) { |
| 987 | return result; |
| 988 | } |
| 989 | } |
| 990 | if (*p1 == 0) { |
| 991 | Tcl_AppendResult(interp, "list doesn't contain element ", |
| 992 | argv[2], (char *) NULL); |
| 993 | return TCL_ERROR; |
| 994 | } |
| 995 | |
| 996 | /* |
| 997 | * Skip over the elements of the list up through "last". |
| 998 | */ |
| 999 | |
| 1000 | for (p2 = p1 ; (count <= last) && (*p2 != 0); count++) { |
| 1001 | result = TclFindElement(interp, p2, &dummy, &p2, (int *) NULL, |
| 1002 | (int *) NULL); |
| 1003 | if (result != TCL_OK) { |
| 1004 | return result; |
| 1005 | } |
| 1006 | } |
| 1007 | |
| 1008 | /* |
| 1009 | * Add the elements before "first" to the result. Be sure to |
| 1010 | * include quote or brace characters that might terminate the |
| 1011 | * last of these elements. |
| 1012 | */ |
| 1013 | |
| 1014 | p1 = element+size; |
| 1015 | if (element != argv[1]) { |
| 1016 | while ((*p1 != 0) && !isspace(*p1)) { |
| 1017 | p1++; |
| 1018 | } |
| 1019 | } |
| 1020 | savedChar = *p1; |
| 1021 | *p1 = 0; |
| 1022 | Tcl_AppendResult(interp, argv[1], (char *) NULL); |
| 1023 | *p1 = savedChar; |
| 1024 | |
| 1025 | /* |
| 1026 | * Add the new list elements. |
| 1027 | */ |
| 1028 | |
| 1029 | for (i = 4; i < argc; i++) { |
| 1030 | Tcl_AppendElement(interp, argv[i], 0); |
| 1031 | } |
| 1032 | |
| 1033 | /* |
| 1034 | * Append the remainder of the original list. |
| 1035 | */ |
| 1036 | |
| 1037 | if (*p2 != 0) { |
| 1038 | if (*interp->result == 0) { |
| 1039 | Tcl_SetResult(interp, p2, TCL_VOLATILE); |
| 1040 | } else { |
| 1041 | Tcl_AppendResult(interp, " ", p2, (char *) NULL); |
| 1042 | } |
| 1043 | } |
| 1044 | return TCL_OK; |
| 1045 | } |
| 1046 | \f |
| 1047 | /* |
| 1048 | *---------------------------------------------------------------------- |
| 1049 | * |
| 1050 | * Tcl_LsearchCmd -- |
| 1051 | * |
| 1052 | * This procedure is invoked to process the "lsearch" Tcl command. |
| 1053 | * See the user documentation for details on what it does. |
| 1054 | * |
| 1055 | * Results: |
| 1056 | * A standard Tcl result. |
| 1057 | * |
| 1058 | * Side effects: |
| 1059 | * See the user documentation. |
| 1060 | * |
| 1061 | *---------------------------------------------------------------------- |
| 1062 | */ |
| 1063 | |
| 1064 | /* ARGSUSED */ |
| 1065 | int |
| 1066 | Tcl_LsearchCmd(notUsed, interp, argc, argv) |
| 1067 | ClientData notUsed; /* Not used. */ |
| 1068 | Tcl_Interp *interp; /* Current interpreter. */ |
| 1069 | int argc; /* Number of arguments. */ |
| 1070 | char **argv; /* Argument strings. */ |
| 1071 | { |
| 1072 | int listArgc; |
| 1073 | char **listArgv; |
| 1074 | int i, match; |
| 1075 | |
| 1076 | if (argc != 3) { |
| 1077 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 1078 | " list pattern\"", (char *) NULL); |
| 1079 | return TCL_ERROR; |
| 1080 | } |
| 1081 | if (Tcl_SplitList(interp, argv[1], &listArgc, &listArgv) != TCL_OK) { |
| 1082 | return TCL_ERROR; |
| 1083 | } |
| 1084 | match = -1; |
| 1085 | for (i = 0; i < listArgc; i++) { |
| 1086 | if (Tcl_StringMatch(listArgv[i], argv[2])) { |
| 1087 | match = i; |
| 1088 | break; |
| 1089 | } |
| 1090 | } |
| 1091 | sprintf(interp->result, "%d", match); |
| 1092 | ckfree((char *) listArgv); |
| 1093 | return TCL_OK; |
| 1094 | } |
| 1095 | \f |
| 1096 | /* |
| 1097 | *---------------------------------------------------------------------- |
| 1098 | * |
| 1099 | * Tcl_LsortCmd -- |
| 1100 | * |
| 1101 | * This procedure is invoked to process the "lsort" Tcl command. |
| 1102 | * See the user documentation for details on what it does. |
| 1103 | * |
| 1104 | * Results: |
| 1105 | * A standard Tcl result. |
| 1106 | * |
| 1107 | * Side effects: |
| 1108 | * See the user documentation. |
| 1109 | * |
| 1110 | *---------------------------------------------------------------------- |
| 1111 | */ |
| 1112 | |
| 1113 | /* ARGSUSED */ |
| 1114 | int |
| 1115 | Tcl_LsortCmd(notUsed, interp, argc, argv) |
| 1116 | ClientData notUsed; /* Not used. */ |
| 1117 | Tcl_Interp *interp; /* Current interpreter. */ |
| 1118 | int argc; /* Number of arguments. */ |
| 1119 | char **argv; /* Argument strings. */ |
| 1120 | { |
| 1121 | int listArgc; |
| 1122 | char **listArgv; |
| 1123 | |
| 1124 | if (argc != 2) { |
| 1125 | Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], |
| 1126 | " list\"", (char *) NULL); |
| 1127 | return TCL_ERROR; |
| 1128 | } |
| 1129 | if (Tcl_SplitList(interp, argv[1], &listArgc, &listArgv) != TCL_OK) { |
| 1130 | return TCL_ERROR; |
| 1131 | } |
| 1132 | qsort((VOID *) listArgv, listArgc, sizeof (char *), SortCompareProc); |
| 1133 | interp->result = Tcl_Merge(listArgc, listArgv); |
| 1134 | interp->freeProc = (Tcl_FreeProc *) free; |
| 1135 | ckfree((char *) listArgv); |
| 1136 | return TCL_OK; |
| 1137 | } |
| 1138 | |
| 1139 | /* |
| 1140 | * The procedure below is called back by qsort to determine |
| 1141 | * the proper ordering between two elements. |
| 1142 | */ |
| 1143 | |
| 1144 | static int |
| 1145 | SortCompareProc(first, second) |
| 1146 | CONST VOID *first, *second; /* Elements to be compared. */ |
| 1147 | { |
| 1148 | return strcmp(*((char **) first), *((char **) second)); |
| 1149 | } |