| 1 | /* Handle set and show GDB commands. |
| 2 | |
| 3 | Copyright (C) 2000-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This program is free software; you can redistribute it and/or modify |
| 6 | it under the terms of the GNU General Public License as published by |
| 7 | the Free Software Foundation; either version 3 of the License, or |
| 8 | (at your option) any later version. |
| 9 | |
| 10 | This program is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | 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, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include "defs.h" |
| 19 | #include "readline/tilde.h" |
| 20 | #include "value.h" |
| 21 | #include <ctype.h> |
| 22 | #include "arch-utils.h" |
| 23 | #include "observable.h" |
| 24 | |
| 25 | #include "ui-out.h" |
| 26 | |
| 27 | #include "cli/cli-decode.h" |
| 28 | #include "cli/cli-cmds.h" |
| 29 | #include "cli/cli-setshow.h" |
| 30 | #include "cli/cli-utils.h" |
| 31 | |
| 32 | /* Return true if the change of command parameter should be notified. */ |
| 33 | |
| 34 | static int |
| 35 | notify_command_param_changed_p (int param_changed, struct cmd_list_element *c) |
| 36 | { |
| 37 | if (param_changed == 0) |
| 38 | return 0; |
| 39 | |
| 40 | if (c->theclass == class_maintenance || c->theclass == class_deprecated |
| 41 | || c->theclass == class_obscure) |
| 42 | return 0; |
| 43 | |
| 44 | return 1; |
| 45 | } |
| 46 | |
| 47 | \f |
| 48 | static enum auto_boolean |
| 49 | parse_auto_binary_operation (const char *arg) |
| 50 | { |
| 51 | if (arg != NULL && *arg != '\0') |
| 52 | { |
| 53 | int length = strlen (arg); |
| 54 | |
| 55 | while (isspace (arg[length - 1]) && length > 0) |
| 56 | length--; |
| 57 | |
| 58 | /* Note that "o" is ambiguous. */ |
| 59 | |
| 60 | if ((length == 2 && strncmp (arg, "on", length) == 0) |
| 61 | || strncmp (arg, "1", length) == 0 |
| 62 | || strncmp (arg, "yes", length) == 0 |
| 63 | || strncmp (arg, "enable", length) == 0) |
| 64 | return AUTO_BOOLEAN_TRUE; |
| 65 | else if ((length >= 2 && strncmp (arg, "off", length) == 0) |
| 66 | || strncmp (arg, "0", length) == 0 |
| 67 | || strncmp (arg, "no", length) == 0 |
| 68 | || strncmp (arg, "disable", length) == 0) |
| 69 | return AUTO_BOOLEAN_FALSE; |
| 70 | else if (strncmp (arg, "auto", length) == 0 |
| 71 | || (length > 1 && strncmp (arg, "-1", length) == 0)) |
| 72 | return AUTO_BOOLEAN_AUTO; |
| 73 | } |
| 74 | error (_("\"on\", \"off\" or \"auto\" expected.")); |
| 75 | return AUTO_BOOLEAN_AUTO; /* Pacify GCC. */ |
| 76 | } |
| 77 | |
| 78 | /* See cli-setshow.h. */ |
| 79 | |
| 80 | int |
| 81 | parse_cli_boolean_value (const char **arg) |
| 82 | { |
| 83 | const char *p = skip_to_space (*arg); |
| 84 | size_t length = p - *arg; |
| 85 | |
| 86 | /* Note that "o" is ambiguous. */ |
| 87 | |
| 88 | if ((length == 2 && strncmp (*arg, "on", length) == 0) |
| 89 | || strncmp (*arg, "1", length) == 0 |
| 90 | || strncmp (*arg, "yes", length) == 0 |
| 91 | || strncmp (*arg, "enable", length) == 0) |
| 92 | { |
| 93 | *arg = skip_spaces (*arg + length); |
| 94 | return 1; |
| 95 | } |
| 96 | else if ((length >= 2 && strncmp (*arg, "off", length) == 0) |
| 97 | || strncmp (*arg, "0", length) == 0 |
| 98 | || strncmp (*arg, "no", length) == 0 |
| 99 | || strncmp (*arg, "disable", length) == 0) |
| 100 | { |
| 101 | *arg = skip_spaces (*arg + length); |
| 102 | return 0; |
| 103 | } |
| 104 | else |
| 105 | return -1; |
| 106 | } |
| 107 | |
| 108 | /* See cli-setshow.h. */ |
| 109 | |
| 110 | int |
| 111 | parse_cli_boolean_value (const char *arg) |
| 112 | { |
| 113 | if (!arg || !*arg) |
| 114 | return 1; |
| 115 | |
| 116 | int b = parse_cli_boolean_value (&arg); |
| 117 | if (b >= 0 && *arg != '\0') |
| 118 | return -1; |
| 119 | |
| 120 | return b; |
| 121 | } |
| 122 | |
| 123 | \f |
| 124 | void |
| 125 | deprecated_show_value_hack (struct ui_file *ignore_file, |
| 126 | int ignore_from_tty, |
| 127 | struct cmd_list_element *c, |
| 128 | const char *value) |
| 129 | { |
| 130 | /* If there's no command or value, don't try to print it out. */ |
| 131 | if (c == NULL || value == NULL) |
| 132 | return; |
| 133 | /* Print doc minus "Show " at start. Tell print_doc_line that |
| 134 | this is for a 'show value' prefix. */ |
| 135 | print_doc_line (gdb_stdout, c->doc + 5, true); |
| 136 | switch (c->var_type) |
| 137 | { |
| 138 | case var_string: |
| 139 | case var_string_noescape: |
| 140 | case var_optional_filename: |
| 141 | case var_filename: |
| 142 | case var_enum: |
| 143 | printf_filtered ((" is \"%s\".\n"), value); |
| 144 | break; |
| 145 | default: |
| 146 | printf_filtered ((" is %s.\n"), value); |
| 147 | break; |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | /* Returns true if ARG is "unlimited". */ |
| 152 | |
| 153 | static bool |
| 154 | is_unlimited_literal (const char **arg, bool expression) |
| 155 | { |
| 156 | *arg = skip_spaces (*arg); |
| 157 | |
| 158 | const char *unl_start = *arg; |
| 159 | |
| 160 | const char *p = skip_to_space (*arg); |
| 161 | |
| 162 | size_t len = p - *arg; |
| 163 | |
| 164 | if (len > 0 && strncmp ("unlimited", *arg, len) == 0) |
| 165 | { |
| 166 | *arg += len; |
| 167 | |
| 168 | /* If parsing an expression (i.e., parsing for a "set" command), |
| 169 | anything after "unlimited" is junk. For options, anything |
| 170 | after "unlimited" might be a command argument or another |
| 171 | option. */ |
| 172 | if (expression) |
| 173 | { |
| 174 | const char *after = skip_spaces (*arg); |
| 175 | if (*after != '\0') |
| 176 | error (_("Junk after \"%.*s\": %s"), |
| 177 | (int) len, unl_start, after); |
| 178 | } |
| 179 | |
| 180 | return true; |
| 181 | } |
| 182 | |
| 183 | return false; |
| 184 | } |
| 185 | |
| 186 | /* See cli-setshow.h. */ |
| 187 | |
| 188 | unsigned int |
| 189 | parse_cli_var_uinteger (var_types var_type, const char **arg, |
| 190 | bool expression) |
| 191 | { |
| 192 | LONGEST val; |
| 193 | |
| 194 | if (*arg == nullptr || **arg == '\0') |
| 195 | { |
| 196 | if (var_type == var_uinteger) |
| 197 | error_no_arg (_("integer to set it to, or \"unlimited\".")); |
| 198 | else |
| 199 | error_no_arg (_("integer to set it to.")); |
| 200 | } |
| 201 | |
| 202 | if (var_type == var_uinteger && is_unlimited_literal (arg, expression)) |
| 203 | val = 0; |
| 204 | else if (expression) |
| 205 | val = parse_and_eval_long (*arg); |
| 206 | else |
| 207 | val = get_ulongest (arg); |
| 208 | |
| 209 | if (var_type == var_uinteger && val == 0) |
| 210 | val = UINT_MAX; |
| 211 | else if (val < 0 |
| 212 | /* For var_uinteger, don't let the user set the value |
| 213 | to UINT_MAX directly, as that exposes an |
| 214 | implementation detail to the user interface. */ |
| 215 | || (var_type == var_uinteger && val >= UINT_MAX) |
| 216 | || (var_type == var_zuinteger && val > UINT_MAX)) |
| 217 | error (_("integer %s out of range"), plongest (val)); |
| 218 | |
| 219 | return val; |
| 220 | } |
| 221 | |
| 222 | /* See cli-setshow.h. */ |
| 223 | |
| 224 | int |
| 225 | parse_cli_var_zuinteger_unlimited (const char **arg, bool expression) |
| 226 | { |
| 227 | LONGEST val; |
| 228 | |
| 229 | if (*arg == nullptr || **arg == '\0') |
| 230 | error_no_arg (_("integer to set it to, or \"unlimited\".")); |
| 231 | |
| 232 | if (is_unlimited_literal (arg, expression)) |
| 233 | val = -1; |
| 234 | else if (expression) |
| 235 | val = parse_and_eval_long (*arg); |
| 236 | else |
| 237 | val = get_ulongest (arg); |
| 238 | |
| 239 | if (val > INT_MAX) |
| 240 | error (_("integer %s out of range"), plongest (val)); |
| 241 | else if (val < -1) |
| 242 | error (_("only -1 is allowed to set as unlimited")); |
| 243 | |
| 244 | return val; |
| 245 | } |
| 246 | |
| 247 | /* See cli-setshow.h. */ |
| 248 | |
| 249 | const char * |
| 250 | parse_cli_var_enum (const char **args, const char *const *enums) |
| 251 | { |
| 252 | /* If no argument was supplied, print an informative error |
| 253 | message. */ |
| 254 | if (args == NULL || *args == NULL || **args == '\0') |
| 255 | { |
| 256 | std::string msg; |
| 257 | |
| 258 | for (size_t i = 0; enums[i]; i++) |
| 259 | { |
| 260 | if (i != 0) |
| 261 | msg += ", "; |
| 262 | msg += enums[i]; |
| 263 | } |
| 264 | error (_("Requires an argument. Valid arguments are %s."), |
| 265 | msg.c_str ()); |
| 266 | } |
| 267 | |
| 268 | const char *p = skip_to_space (*args); |
| 269 | size_t len = p - *args; |
| 270 | |
| 271 | int nmatches = 0; |
| 272 | const char *match = NULL; |
| 273 | for (size_t i = 0; enums[i]; i++) |
| 274 | if (strncmp (*args, enums[i], len) == 0) |
| 275 | { |
| 276 | if (enums[i][len] == '\0') |
| 277 | { |
| 278 | match = enums[i]; |
| 279 | nmatches = 1; |
| 280 | break; /* Exact match. */ |
| 281 | } |
| 282 | else |
| 283 | { |
| 284 | match = enums[i]; |
| 285 | nmatches++; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | if (nmatches == 0) |
| 290 | error (_("Undefined item: \"%.*s\"."), (int) len, *args); |
| 291 | |
| 292 | if (nmatches > 1) |
| 293 | error (_("Ambiguous item \"%.*s\"."), (int) len, *args); |
| 294 | |
| 295 | *args += len; |
| 296 | return match; |
| 297 | } |
| 298 | |
| 299 | /* Do a "set" command. ARG is NULL if no argument, or the |
| 300 | text of the argument, and FROM_TTY is nonzero if this command is |
| 301 | being entered directly by the user (i.e. these are just like any |
| 302 | other command). C is the command list element for the command. */ |
| 303 | |
| 304 | void |
| 305 | do_set_command (const char *arg, int from_tty, struct cmd_list_element *c) |
| 306 | { |
| 307 | /* A flag to indicate the option is changed or not. */ |
| 308 | int option_changed = 0; |
| 309 | |
| 310 | gdb_assert (c->type == set_cmd); |
| 311 | |
| 312 | if (arg == NULL) |
| 313 | arg = ""; |
| 314 | |
| 315 | switch (c->var_type) |
| 316 | { |
| 317 | case var_string: |
| 318 | { |
| 319 | char *newobj; |
| 320 | const char *p; |
| 321 | char *q; |
| 322 | int ch; |
| 323 | |
| 324 | newobj = (char *) xmalloc (strlen (arg) + 2); |
| 325 | p = arg; |
| 326 | q = newobj; |
| 327 | while ((ch = *p++) != '\000') |
| 328 | { |
| 329 | if (ch == '\\') |
| 330 | { |
| 331 | /* \ at end of argument is used after spaces |
| 332 | so they won't be lost. */ |
| 333 | /* This is obsolete now that we no longer strip |
| 334 | trailing whitespace and actually, the backslash |
| 335 | didn't get here in my test, readline or |
| 336 | something did something funky with a backslash |
| 337 | right before a newline. */ |
| 338 | if (*p == 0) |
| 339 | break; |
| 340 | ch = parse_escape (get_current_arch (), &p); |
| 341 | if (ch == 0) |
| 342 | break; /* C loses */ |
| 343 | else if (ch > 0) |
| 344 | *q++ = ch; |
| 345 | } |
| 346 | else |
| 347 | *q++ = ch; |
| 348 | } |
| 349 | #if 0 |
| 350 | if (*(p - 1) != '\\') |
| 351 | *q++ = ' '; |
| 352 | #endif |
| 353 | *q++ = '\0'; |
| 354 | newobj = (char *) xrealloc (newobj, q - newobj); |
| 355 | |
| 356 | if (*(char **) c->var == NULL |
| 357 | || strcmp (*(char **) c->var, newobj) != 0) |
| 358 | { |
| 359 | xfree (*(char **) c->var); |
| 360 | *(char **) c->var = newobj; |
| 361 | |
| 362 | option_changed = 1; |
| 363 | } |
| 364 | else |
| 365 | xfree (newobj); |
| 366 | } |
| 367 | break; |
| 368 | case var_string_noescape: |
| 369 | if (*(char **) c->var == NULL || strcmp (*(char **) c->var, arg) != 0) |
| 370 | { |
| 371 | xfree (*(char **) c->var); |
| 372 | *(char **) c->var = xstrdup (arg); |
| 373 | |
| 374 | option_changed = 1; |
| 375 | } |
| 376 | break; |
| 377 | case var_filename: |
| 378 | if (*arg == '\0') |
| 379 | error_no_arg (_("filename to set it to.")); |
| 380 | /* FALLTHROUGH */ |
| 381 | case var_optional_filename: |
| 382 | { |
| 383 | char *val = NULL; |
| 384 | |
| 385 | if (*arg != '\0') |
| 386 | { |
| 387 | /* Clear trailing whitespace of filename. */ |
| 388 | const char *ptr = arg + strlen (arg) - 1; |
| 389 | char *copy; |
| 390 | |
| 391 | while (ptr >= arg && (*ptr == ' ' || *ptr == '\t')) |
| 392 | ptr--; |
| 393 | copy = xstrndup (arg, ptr + 1 - arg); |
| 394 | |
| 395 | val = tilde_expand (copy); |
| 396 | xfree (copy); |
| 397 | } |
| 398 | else |
| 399 | val = xstrdup (""); |
| 400 | |
| 401 | if (*(char **) c->var == NULL |
| 402 | || strcmp (*(char **) c->var, val) != 0) |
| 403 | { |
| 404 | xfree (*(char **) c->var); |
| 405 | *(char **) c->var = val; |
| 406 | |
| 407 | option_changed = 1; |
| 408 | } |
| 409 | else |
| 410 | xfree (val); |
| 411 | } |
| 412 | break; |
| 413 | case var_boolean: |
| 414 | { |
| 415 | int val = parse_cli_boolean_value (arg); |
| 416 | |
| 417 | if (val < 0) |
| 418 | error (_("\"on\" or \"off\" expected.")); |
| 419 | if (val != *(bool *) c->var) |
| 420 | { |
| 421 | *(bool *) c->var = val; |
| 422 | |
| 423 | option_changed = 1; |
| 424 | } |
| 425 | } |
| 426 | break; |
| 427 | case var_auto_boolean: |
| 428 | { |
| 429 | enum auto_boolean val = parse_auto_binary_operation (arg); |
| 430 | |
| 431 | if (*(enum auto_boolean *) c->var != val) |
| 432 | { |
| 433 | *(enum auto_boolean *) c->var = val; |
| 434 | |
| 435 | option_changed = 1; |
| 436 | } |
| 437 | } |
| 438 | break; |
| 439 | case var_uinteger: |
| 440 | case var_zuinteger: |
| 441 | { |
| 442 | unsigned int val = parse_cli_var_uinteger (c->var_type, &arg, true); |
| 443 | |
| 444 | if (*(unsigned int *) c->var != val) |
| 445 | { |
| 446 | *(unsigned int *) c->var = val; |
| 447 | |
| 448 | option_changed = 1; |
| 449 | } |
| 450 | } |
| 451 | break; |
| 452 | case var_integer: |
| 453 | case var_zinteger: |
| 454 | { |
| 455 | LONGEST val; |
| 456 | |
| 457 | if (*arg == '\0') |
| 458 | { |
| 459 | if (c->var_type == var_integer) |
| 460 | error_no_arg (_("integer to set it to, or \"unlimited\".")); |
| 461 | else |
| 462 | error_no_arg (_("integer to set it to.")); |
| 463 | } |
| 464 | |
| 465 | if (c->var_type == var_integer && is_unlimited_literal (&arg, true)) |
| 466 | val = 0; |
| 467 | else |
| 468 | val = parse_and_eval_long (arg); |
| 469 | |
| 470 | if (val == 0 && c->var_type == var_integer) |
| 471 | val = INT_MAX; |
| 472 | else if (val < INT_MIN |
| 473 | /* For var_integer, don't let the user set the value |
| 474 | to INT_MAX directly, as that exposes an |
| 475 | implementation detail to the user interface. */ |
| 476 | || (c->var_type == var_integer && val >= INT_MAX) |
| 477 | || (c->var_type == var_zinteger && val > INT_MAX)) |
| 478 | error (_("integer %s out of range"), plongest (val)); |
| 479 | |
| 480 | if (*(int *) c->var != val) |
| 481 | { |
| 482 | *(int *) c->var = val; |
| 483 | |
| 484 | option_changed = 1; |
| 485 | } |
| 486 | break; |
| 487 | } |
| 488 | case var_enum: |
| 489 | { |
| 490 | const char *end_arg = arg; |
| 491 | const char *match = parse_cli_var_enum (&end_arg, c->enums); |
| 492 | |
| 493 | int len = end_arg - arg; |
| 494 | const char *after = skip_spaces (end_arg); |
| 495 | if (*after != '\0') |
| 496 | error (_("Junk after item \"%.*s\": %s"), len, arg, after); |
| 497 | |
| 498 | if (*(const char **) c->var != match) |
| 499 | { |
| 500 | *(const char **) c->var = match; |
| 501 | |
| 502 | option_changed = 1; |
| 503 | } |
| 504 | } |
| 505 | break; |
| 506 | case var_zuinteger_unlimited: |
| 507 | { |
| 508 | int val = parse_cli_var_zuinteger_unlimited (&arg, true); |
| 509 | |
| 510 | if (*(int *) c->var != val) |
| 511 | { |
| 512 | *(int *) c->var = val; |
| 513 | option_changed = 1; |
| 514 | } |
| 515 | } |
| 516 | break; |
| 517 | default: |
| 518 | error (_("gdb internal error: bad var_type in do_setshow_command")); |
| 519 | } |
| 520 | c->func (c, NULL, from_tty); |
| 521 | |
| 522 | if (notify_command_param_changed_p (option_changed, c)) |
| 523 | { |
| 524 | char *name, *cp; |
| 525 | struct cmd_list_element **cmds; |
| 526 | struct cmd_list_element *p; |
| 527 | int i; |
| 528 | int length = 0; |
| 529 | |
| 530 | /* Compute the whole multi-word command options. If user types command |
| 531 | 'set foo bar baz on', c->name is 'baz', and GDB can't pass "bar" to |
| 532 | command option change notification, because it is confusing. We can |
| 533 | trace back through field 'prefix' to compute the whole options, |
| 534 | and pass "foo bar baz" to notification. */ |
| 535 | |
| 536 | for (i = 0, p = c; p != NULL; i++) |
| 537 | { |
| 538 | length += strlen (p->name); |
| 539 | length++; |
| 540 | |
| 541 | p = p->prefix; |
| 542 | } |
| 543 | cp = name = (char *) xmalloc (length); |
| 544 | cmds = XNEWVEC (struct cmd_list_element *, i); |
| 545 | |
| 546 | /* Track back through filed 'prefix' and cache them in CMDS. */ |
| 547 | for (i = 0, p = c; p != NULL; i++) |
| 548 | { |
| 549 | cmds[i] = p; |
| 550 | p = p->prefix; |
| 551 | } |
| 552 | |
| 553 | /* Don't trigger any observer notification if prefixlist is not |
| 554 | setlist. */ |
| 555 | i--; |
| 556 | if (cmds[i]->prefixlist != &setlist) |
| 557 | { |
| 558 | xfree (cmds); |
| 559 | xfree (name); |
| 560 | |
| 561 | return; |
| 562 | } |
| 563 | /* Traverse them in the reversed order, and copy their names into |
| 564 | NAME. */ |
| 565 | for (i--; i >= 0; i--) |
| 566 | { |
| 567 | memcpy (cp, cmds[i]->name, strlen (cmds[i]->name)); |
| 568 | cp += strlen (cmds[i]->name); |
| 569 | |
| 570 | if (i != 0) |
| 571 | { |
| 572 | cp[0] = ' '; |
| 573 | cp++; |
| 574 | } |
| 575 | } |
| 576 | cp[0] = 0; |
| 577 | |
| 578 | xfree (cmds); |
| 579 | |
| 580 | switch (c->var_type) |
| 581 | { |
| 582 | case var_string: |
| 583 | case var_string_noescape: |
| 584 | case var_filename: |
| 585 | case var_optional_filename: |
| 586 | case var_enum: |
| 587 | gdb::observers::command_param_changed.notify (name, *(char **) c->var); |
| 588 | break; |
| 589 | case var_boolean: |
| 590 | { |
| 591 | const char *opt = *(bool *) c->var ? "on" : "off"; |
| 592 | |
| 593 | gdb::observers::command_param_changed.notify (name, opt); |
| 594 | } |
| 595 | break; |
| 596 | case var_auto_boolean: |
| 597 | { |
| 598 | const char *s = auto_boolean_enums[*(enum auto_boolean *) c->var]; |
| 599 | |
| 600 | gdb::observers::command_param_changed.notify (name, s); |
| 601 | } |
| 602 | break; |
| 603 | case var_uinteger: |
| 604 | case var_zuinteger: |
| 605 | { |
| 606 | char s[64]; |
| 607 | |
| 608 | xsnprintf (s, sizeof s, "%u", *(unsigned int *) c->var); |
| 609 | gdb::observers::command_param_changed.notify (name, s); |
| 610 | } |
| 611 | break; |
| 612 | case var_integer: |
| 613 | case var_zinteger: |
| 614 | case var_zuinteger_unlimited: |
| 615 | { |
| 616 | char s[64]; |
| 617 | |
| 618 | xsnprintf (s, sizeof s, "%d", *(int *) c->var); |
| 619 | gdb::observers::command_param_changed.notify (name, s); |
| 620 | } |
| 621 | break; |
| 622 | } |
| 623 | xfree (name); |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | /* See cli/cli-setshow.h. */ |
| 628 | |
| 629 | std::string |
| 630 | get_setshow_command_value_string (const cmd_list_element *c) |
| 631 | { |
| 632 | string_file stb; |
| 633 | |
| 634 | switch (c->var_type) |
| 635 | { |
| 636 | case var_string: |
| 637 | if (*(char **) c->var) |
| 638 | stb.putstr (*(char **) c->var, '"'); |
| 639 | break; |
| 640 | case var_string_noescape: |
| 641 | case var_optional_filename: |
| 642 | case var_filename: |
| 643 | case var_enum: |
| 644 | if (*(char **) c->var) |
| 645 | stb.puts (*(char **) c->var); |
| 646 | break; |
| 647 | case var_boolean: |
| 648 | stb.puts (*(bool *) c->var ? "on" : "off"); |
| 649 | break; |
| 650 | case var_auto_boolean: |
| 651 | switch (*(enum auto_boolean*) c->var) |
| 652 | { |
| 653 | case AUTO_BOOLEAN_TRUE: |
| 654 | stb.puts ("on"); |
| 655 | break; |
| 656 | case AUTO_BOOLEAN_FALSE: |
| 657 | stb.puts ("off"); |
| 658 | break; |
| 659 | case AUTO_BOOLEAN_AUTO: |
| 660 | stb.puts ("auto"); |
| 661 | break; |
| 662 | default: |
| 663 | gdb_assert_not_reached ("invalid var_auto_boolean"); |
| 664 | break; |
| 665 | } |
| 666 | break; |
| 667 | case var_uinteger: |
| 668 | case var_zuinteger: |
| 669 | if (c->var_type == var_uinteger |
| 670 | && *(unsigned int *) c->var == UINT_MAX) |
| 671 | stb.puts ("unlimited"); |
| 672 | else |
| 673 | stb.printf ("%u", *(unsigned int *) c->var); |
| 674 | break; |
| 675 | case var_integer: |
| 676 | case var_zinteger: |
| 677 | if (c->var_type == var_integer |
| 678 | && *(int *) c->var == INT_MAX) |
| 679 | stb.puts ("unlimited"); |
| 680 | else |
| 681 | stb.printf ("%d", *(int *) c->var); |
| 682 | break; |
| 683 | case var_zuinteger_unlimited: |
| 684 | { |
| 685 | if (*(int *) c->var == -1) |
| 686 | stb.puts ("unlimited"); |
| 687 | else |
| 688 | stb.printf ("%d", *(int *) c->var); |
| 689 | } |
| 690 | break; |
| 691 | default: |
| 692 | gdb_assert_not_reached ("bad var_type"); |
| 693 | } |
| 694 | |
| 695 | return std::move (stb.string ()); |
| 696 | } |
| 697 | |
| 698 | |
| 699 | /* Do a "show" command. ARG is NULL if no argument, or the |
| 700 | text of the argument, and FROM_TTY is nonzero if this command is |
| 701 | being entered directly by the user (i.e. these are just like any |
| 702 | other command). C is the command list element for the command. */ |
| 703 | |
| 704 | void |
| 705 | do_show_command (const char *arg, int from_tty, struct cmd_list_element *c) |
| 706 | { |
| 707 | struct ui_out *uiout = current_uiout; |
| 708 | |
| 709 | gdb_assert (c->type == show_cmd); |
| 710 | |
| 711 | /* Possibly call the pre hook. */ |
| 712 | if (c->pre_show_hook) |
| 713 | (c->pre_show_hook) (c); |
| 714 | |
| 715 | std::string val = get_setshow_command_value_string (c); |
| 716 | |
| 717 | /* FIXME: cagney/2005-02-10: There should be MI and CLI specific |
| 718 | versions of code to print the value out. */ |
| 719 | |
| 720 | if (uiout->is_mi_like_p ()) |
| 721 | uiout->field_string ("value", val.c_str ()); |
| 722 | else |
| 723 | { |
| 724 | if (c->show_value_func != NULL) |
| 725 | c->show_value_func (gdb_stdout, from_tty, c, val.c_str ()); |
| 726 | else |
| 727 | deprecated_show_value_hack (gdb_stdout, from_tty, c, val.c_str ()); |
| 728 | } |
| 729 | |
| 730 | c->func (c, NULL, from_tty); |
| 731 | } |
| 732 | |
| 733 | /* Show all the settings in a list of show commands. */ |
| 734 | |
| 735 | void |
| 736 | cmd_show_list (struct cmd_list_element *list, int from_tty) |
| 737 | { |
| 738 | struct ui_out *uiout = current_uiout; |
| 739 | |
| 740 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
| 741 | for (; list != NULL; list = list->next) |
| 742 | { |
| 743 | /* We skip show command aliases to avoid showing duplicated values. */ |
| 744 | |
| 745 | /* If we find a prefix, run its list, prefixing our output by its |
| 746 | prefix (with "show " skipped). */ |
| 747 | if (list->prefixlist && list->cmd_pointer == nullptr) |
| 748 | { |
| 749 | ui_out_emit_tuple optionlist_emitter (uiout, "optionlist"); |
| 750 | const char *new_prefix = strstr (list->prefixname, "show ") + 5; |
| 751 | |
| 752 | if (uiout->is_mi_like_p ()) |
| 753 | uiout->field_string ("prefix", new_prefix); |
| 754 | cmd_show_list (*list->prefixlist, from_tty); |
| 755 | } |
| 756 | else if (list->theclass != no_set_class && list->cmd_pointer == nullptr) |
| 757 | { |
| 758 | ui_out_emit_tuple option_emitter (uiout, "option"); |
| 759 | |
| 760 | { |
| 761 | /* If we find a prefix, output it (with "show " skipped). */ |
| 762 | const char *prefixname |
| 763 | = (list->prefix == nullptr ? "" |
| 764 | : strstr (list->prefix->prefixname, "show ") + 5); |
| 765 | uiout->text (prefixname); |
| 766 | } |
| 767 | uiout->field_string ("name", list->name); |
| 768 | uiout->text (": "); |
| 769 | if (list->type == show_cmd) |
| 770 | do_show_command (NULL, from_tty, list); |
| 771 | else |
| 772 | cmd_func (list, NULL, from_tty); |
| 773 | } |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | |