granicus.if.org Git - postgresql/blob - src/bin/psql/startup.c

   1 /*
   2  * psql - the PostgreSQL interactive terminal
   3  *
   4  * Copyright (c) 2000-2014, PostgreSQL Global Development Group
   5  *
   6  * src/bin/psql/startup.c
   7  */
   8 #include "postgres_fe.h"
   9
  10 #include <sys/types.h>
  11
  12 #ifndef WIN32
  13 #include <unistd.h>
  14 #else                                                   /* WIN32 */
  15 #include <io.h>
  16 #include <win32.h>
  17 #endif   /* WIN32 */
  18
  19 #include "getopt_long.h"
  20
  21 #include <locale.h>
  22
  23 #include "command.h"
  24 #include "common.h"
  25 #include "describe.h"
  26 #include "help.h"
  27 #include "input.h"
  28 #include "mainloop.h"
  29 #include "settings.h"
  30
  31
  32
  33 /*
  34  * Global psql options
  35  */
  36 PsqlSettings pset;
  37
  38 #ifndef WIN32
  39 #define SYSPSQLRC       "psqlrc"
  40 #define PSQLRC          ".psqlrc"
  41 #else
  42 #define SYSPSQLRC       "psqlrc"
  43 #define PSQLRC          "psqlrc.conf"
  44 #endif
  45
  46 /*
  47  * Structures to pass information between the option parsing routine
  48  * and the main function
  49  */
  50 enum _actions
  51 {
  52         ACT_NOTHING = 0,
  53         ACT_SINGLE_SLASH,
  54         ACT_LIST_DB,
  55         ACT_SINGLE_QUERY,
  56         ACT_FILE
  57 };
  58
  59 struct adhoc_opts
  60 {
  61         char       *dbname;
  62         char       *host;
  63         char       *port;
  64         char       *username;
  65         char       *logfilename;
  66         enum _actions action;
  67         char       *action_string;
  68         bool            no_readline;
  69         bool            no_psqlrc;
  70         bool            single_txn;
  71 };
  72
  73 static void parse_psql_options(int argc, char *argv[],
  74                                    struct adhoc_opts * options);
  75 static void process_psqlrc(char *argv0);
  76 static void process_psqlrc_file(char *filename);
  77 static void showVersion(void);
  78 static void EstablishVariableSpace(void);
  79
  80 /*
  81  *
  82  * main
  83  *
  84  */
  85 int
  86 main(int argc, char *argv[])
  87 {
  88         struct adhoc_opts options;
  89         int                     successResult;
  90         char       *password = NULL;
  91         char       *password_prompt = NULL;
  92         bool            new_pass;
  93
  94         set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("psql"));
  95
  96         if (argc > 1)
  97         {
  98                 if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0)
  99                 {
 100                         usage();
 101                         exit(EXIT_SUCCESS);
 102                 }
 103                 if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
 104                 {
 105                         showVersion();
 106                         exit(EXIT_SUCCESS);
 107                 }
 108         }
 109
 110 #ifdef WIN32
 111         setvbuf(stderr, NULL, _IONBF, 0);
 112 #endif
 113
 114         pset.progname = get_progname(argv[0]);
 115
 116         pset.db = NULL;
 117         setDecimalLocale();
 118         pset.encoding = PQenv2encoding();
 119         pset.queryFout = stdout;
 120         pset.queryFoutPipe = false;
 121         pset.cur_cmd_source = stdin;
 122         pset.cur_cmd_interactive = false;
 123
 124         /* We rely on unmentioned fields of pset.popt to start out 0/false/NULL */
 125         pset.popt.topt.format = PRINT_ALIGNED;
 126         pset.popt.topt.border = 1;
 127         pset.popt.topt.pager = 1;
 128         pset.popt.topt.start_table = true;
 129         pset.popt.topt.stop_table = true;
 130         pset.popt.topt.default_footer = true;
 131         /* We must get COLUMNS here before readline() sets it */
 132         pset.popt.topt.env_columns = getenv("COLUMNS") ? atoi(getenv("COLUMNS")) : 0;
 133
 134         pset.notty = (!isatty(fileno(stdin)) || !isatty(fileno(stdout)));
 135
 136         pset.getPassword = TRI_DEFAULT;
 137
 138         EstablishVariableSpace();
 139
 140         SetVariable(pset.vars, "VERSION", PG_VERSION_STR);
 141
 142         /* Default values for variables */
 143         SetVariableBool(pset.vars, "AUTOCOMMIT");
 144         SetVariable(pset.vars, "VERBOSITY", "default");
 145         SetVariable(pset.vars, "PROMPT1", DEFAULT_PROMPT1);
 146         SetVariable(pset.vars, "PROMPT2", DEFAULT_PROMPT2);
 147         SetVariable(pset.vars, "PROMPT3", DEFAULT_PROMPT3);
 148
 149         parse_psql_options(argc, argv, &options);
 150
 151         /*
 152          * If no action was specified and we're in non-interactive mode, treat it
 153          * as if the user had specified "-f -".  This lets single-transaction mode
 154          * work in this case.
 155          */
 156         if (options.action == ACT_NOTHING && pset.notty)
 157         {
 158                 options.action = ACT_FILE;
 159                 options.action_string = NULL;
 160         }
 161
 162         /* Bail out if -1 was specified but will be ignored. */
 163         if (options.single_txn && options.action != ACT_FILE && options.action == ACT_NOTHING)
 164         {
 165                 fprintf(stderr, _("%s: -1 can only be used in non-interactive mode\n"), pset.progname);
 166                 exit(EXIT_FAILURE);
 167         }
 168
 169         if (!pset.popt.topt.fieldSep.separator &&
 170                 !pset.popt.topt.fieldSep.separator_zero)
 171         {
 172                 pset.popt.topt.fieldSep.separator = pg_strdup(DEFAULT_FIELD_SEP);
 173                 pset.popt.topt.fieldSep.separator_zero = false;
 174         }
 175         if (!pset.popt.topt.recordSep.separator &&
 176                 !pset.popt.topt.recordSep.separator_zero)
 177         {
 178                 pset.popt.topt.recordSep.separator = pg_strdup(DEFAULT_RECORD_SEP);
 179                 pset.popt.topt.recordSep.separator_zero = false;
 180         }
 181
 182         if (options.username == NULL)
 183                 password_prompt = pg_strdup(_("Password: "));
 184         else
 185                 password_prompt = psprintf(_("Password for user %s: "),
 186                                                                    options.username);
 187
 188         if (pset.getPassword == TRI_YES)
 189                 password = simple_prompt(password_prompt, 100, false);
 190
 191         /* loop until we have a password if requested by backend */
 192         do
 193         {
 194 #define PARAMS_ARRAY_SIZE       8
 195                 const char **keywords = pg_malloc(PARAMS_ARRAY_SIZE * sizeof(*keywords));
 196                 const char **values = pg_malloc(PARAMS_ARRAY_SIZE * sizeof(*values));
 197
 198                 keywords[0] = "host";
 199                 values[0] = options.host;
 200                 keywords[1] = "port";
 201                 values[1] = options.port;
 202                 keywords[2] = "user";
 203                 values[2] = options.username;
 204                 keywords[3] = "password";
 205                 values[3] = password;
 206                 keywords[4] = "dbname";
 207                 values[4] = (options.action == ACT_LIST_DB &&
 208                                          options.dbname == NULL) ?
 209                         "postgres" : options.dbname;
 210                 keywords[5] = "fallback_application_name";
 211                 values[5] = pset.progname;
 212                 keywords[6] = "client_encoding";
 213                 values[6] = (pset.notty || getenv("PGCLIENTENCODING")) ? NULL : "auto";
 214                 keywords[7] = NULL;
 215                 values[7] = NULL;
 216
 217                 new_pass = false;
 218                 pset.db = PQconnectdbParams(keywords, values, true);
 219                 free(keywords);
 220                 free(values);
 221
 222                 if (PQstatus(pset.db) == CONNECTION_BAD &&
 223                         PQconnectionNeedsPassword(pset.db) &&
 224                         password == NULL &&
 225                         pset.getPassword != TRI_NO)
 226                 {
 227                         PQfinish(pset.db);
 228                         password = simple_prompt(password_prompt, 100, false);
 229                         new_pass = true;
 230                 }
 231         } while (new_pass);
 232
 233         free(password);
 234         free(password_prompt);
 235
 236         if (PQstatus(pset.db) == CONNECTION_BAD)
 237         {
 238                 fprintf(stderr, "%s: %s", pset.progname, PQerrorMessage(pset.db));
 239                 PQfinish(pset.db);
 240                 exit(EXIT_BADCONN);
 241         }
 242
 243         setup_cancel_handler();
 244
 245         PQsetNoticeProcessor(pset.db, NoticeProcessor, NULL);
 246
 247         SyncVariables();
 248
 249         if (options.action == ACT_LIST_DB)
 250         {
 251                 int                     success;
 252
 253                 if (!options.no_psqlrc)
 254                         process_psqlrc(argv[0]);
 255
 256                 success = listAllDbs(NULL, false);
 257                 PQfinish(pset.db);
 258                 exit(success ? EXIT_SUCCESS : EXIT_FAILURE);
 259         }
 260
 261         if (options.logfilename)
 262         {
 263                 pset.logfile = fopen(options.logfilename, "a");
 264                 if (!pset.logfile)
 265                         fprintf(stderr, _("%s: could not open log file \"%s\": %s\n"),
 266                                         pset.progname, options.logfilename, strerror(errno));
 267         }
 268
 269         /*
 270          * Now find something to do
 271          */
 272
 273         /*
 274          * process file given by -f
 275          */
 276         if (options.action == ACT_FILE)
 277         {
 278                 if (!options.no_psqlrc)
 279                         process_psqlrc(argv[0]);
 280
 281                 successResult = process_file(options.action_string, options.single_txn, false);
 282         }
 283
 284         /*
 285          * process slash command if one was given to -c
 286          */
 287         else if (options.action == ACT_SINGLE_SLASH)
 288         {
 289                 PsqlScanState scan_state;
 290
 291                 if (pset.echo == PSQL_ECHO_ALL)
 292                         puts(options.action_string);
 293
 294                 scan_state = psql_scan_create();
 295                 psql_scan_setup(scan_state,
 296                                                 options.action_string,
 297                                                 strlen(options.action_string));
 298
 299                 successResult = HandleSlashCmds(scan_state, NULL) != PSQL_CMD_ERROR
 300                         ? EXIT_SUCCESS : EXIT_FAILURE;
 301
 302                 psql_scan_destroy(scan_state);
 303         }
 304
 305         /*
 306          * If the query given to -c was a normal one, send it
 307          */
 308         else if (options.action == ACT_SINGLE_QUERY)
 309         {
 310                 if (pset.echo == PSQL_ECHO_ALL)
 311                         puts(options.action_string);
 312
 313                 successResult = SendQuery(options.action_string)
 314                         ? EXIT_SUCCESS : EXIT_FAILURE;
 315         }
 316
 317         /*
 318          * or otherwise enter interactive main loop
 319          */
 320         else
 321         {
 322                 if (!options.no_psqlrc)
 323                         process_psqlrc(argv[0]);
 324
 325                 connection_warnings(true);
 326                 if (!pset.quiet)
 327                         printf(_("Type \"help\" for help.\n\n"));
 328                 initializeInput(options.no_readline ? 0 : 1);
 329                 successResult = MainLoop(stdin);
 330         }
 331
 332         /* clean up */
 333         if (pset.logfile)
 334                 fclose(pset.logfile);
 335         PQfinish(pset.db);
 336         setQFout(NULL);
 337
 338         return successResult;
 339 }
 340
 341
 342 /*
 343  * Parse command line options
 344  */
 345
 346 static void
 347 parse_psql_options(int argc, char *argv[], struct adhoc_opts * options)
 348 {
 349         static struct option long_options[] =
 350         {
 351                 {"echo-all", no_argument, NULL, 'a'},
 352                 {"no-align", no_argument, NULL, 'A'},
 353                 {"command", required_argument, NULL, 'c'},
 354                 {"dbname", required_argument, NULL, 'd'},
 355                 {"echo-queries", no_argument, NULL, 'e'},
 356                 {"echo-hidden", no_argument, NULL, 'E'},
 357                 {"file", required_argument, NULL, 'f'},
 358                 {"field-separator", required_argument, NULL, 'F'},
 359                 {"field-separator-zero", no_argument, NULL, 'z'},
 360                 {"host", required_argument, NULL, 'h'},
 361                 {"html", no_argument, NULL, 'H'},
 362                 {"list", no_argument, NULL, 'l'},
 363                 {"log-file", required_argument, NULL, 'L'},
 364                 {"no-readline", no_argument, NULL, 'n'},
 365                 {"single-transaction", no_argument, NULL, '1'},
 366                 {"output", required_argument, NULL, 'o'},
 367                 {"port", required_argument, NULL, 'p'},
 368                 {"pset", required_argument, NULL, 'P'},
 369                 {"quiet", no_argument, NULL, 'q'},
 370                 {"record-separator", required_argument, NULL, 'R'},
 371                 {"record-separator-zero", no_argument, NULL, '0'},
 372                 {"single-step", no_argument, NULL, 's'},
 373                 {"single-line", no_argument, NULL, 'S'},
 374                 {"tuples-only", no_argument, NULL, 't'},
 375                 {"table-attr", required_argument, NULL, 'T'},
 376                 {"username", required_argument, NULL, 'U'},
 377                 {"set", required_argument, NULL, 'v'},
 378                 {"variable", required_argument, NULL, 'v'},
 379                 {"version", no_argument, NULL, 'V'},
 380                 {"no-password", no_argument, NULL, 'w'},
 381                 {"password", no_argument, NULL, 'W'},
 382                 {"expanded", no_argument, NULL, 'x'},
 383                 {"no-psqlrc", no_argument, NULL, 'X'},
 384                 {"help", no_argument, NULL, '?'},
 385                 {NULL, 0, NULL, 0}
 386         };
 387
 388         int                     optindex;
 389         extern char *optarg;
 390         extern int      optind;
 391         int                     c;
 392
 393         memset(options, 0, sizeof *options);
 394
 395         while ((c = getopt_long(argc, argv, "aAc:d:eEf:F:h:HlL:no:p:P:qR:sStT:U:v:VwWxXz?01",
 396                                                         long_options, &optindex)) != -1)
 397         {
 398                 switch (c)
 399                 {
 400                         case 'a':
 401                                 SetVariable(pset.vars, "ECHO", "all");
 402                                 break;
 403                         case 'A':
 404                                 pset.popt.topt.format = PRINT_UNALIGNED;
 405                                 break;
 406                         case 'c':
 407                                 options->action_string = pg_strdup(optarg);
 408                                 if (optarg[0] == '\\')
 409                                 {
 410                                         options->action = ACT_SINGLE_SLASH;
 411                                         options->action_string++;
 412                                 }
 413                                 else
 414                                         options->action = ACT_SINGLE_QUERY;
 415                                 break;
 416                         case 'd':
 417                                 options->dbname = pg_strdup(optarg);
 418                                 break;
 419                         case 'e':
 420                                 SetVariable(pset.vars, "ECHO", "queries");
 421                                 break;
 422                         case 'E':
 423                                 SetVariableBool(pset.vars, "ECHO_HIDDEN");
 424                                 break;
 425                         case 'f':
 426                                 options->action = ACT_FILE;
 427                                 options->action_string = pg_strdup(optarg);
 428                                 break;
 429                         case 'F':
 430                                 pset.popt.topt.fieldSep.separator = pg_strdup(optarg);
 431                                 pset.popt.topt.fieldSep.separator_zero = false;
 432                                 break;
 433                         case 'h':
 434                                 options->host = pg_strdup(optarg);
 435                                 break;
 436                         case 'H':
 437                                 pset.popt.topt.format = PRINT_HTML;
 438                                 break;
 439                         case 'l':
 440                                 options->action = ACT_LIST_DB;
 441                                 break;
 442                         case 'L':
 443                                 options->logfilename = pg_strdup(optarg);
 444                                 break;
 445                         case 'n':
 446                                 options->no_readline = true;
 447                                 break;
 448                         case 'o':
 449                                 setQFout(optarg);
 450                                 break;
 451                         case 'p':
 452                                 options->port = pg_strdup(optarg);
 453                                 break;
 454                         case 'P':
 455                                 {
 456                                         char       *value;
 457                                         char       *equal_loc;
 458                                         bool            result;
 459
 460                                         value = pg_strdup(optarg);
 461                                         equal_loc = strchr(value, '=');
 462                                         if (!equal_loc)
 463                                                 result = do_pset(value, NULL, &pset.popt, true);
 464                                         else
 465                                         {
 466                                                 *equal_loc = '\0';
 467                                                 result = do_pset(value, equal_loc + 1, &pset.popt, true);
 468                                         }
 469
 470                                         if (!result)
 471                                         {
 472                                                 fprintf(stderr, _("%s: could not set printing parameter \"%s\"\n"), pset.progname, value);
 473                                                 exit(EXIT_FAILURE);
 474                                         }
 475
 476                                         free(value);
 477                                         break;
 478                                 }
 479                         case 'q':
 480                                 SetVariableBool(pset.vars, "QUIET");
 481                                 break;
 482                         case 'R':
 483                                 pset.popt.topt.recordSep.separator = pg_strdup(optarg);
 484                                 pset.popt.topt.recordSep.separator_zero = false;
 485                                 break;
 486                         case 's':
 487                                 SetVariableBool(pset.vars, "SINGLESTEP");
 488                                 break;
 489                         case 'S':
 490                                 SetVariableBool(pset.vars, "SINGLELINE");
 491                                 break;
 492                         case 't':
 493                                 pset.popt.topt.tuples_only = true;
 494                                 break;
 495                         case 'T':
 496                                 pset.popt.topt.tableAttr = pg_strdup(optarg);
 497                                 break;
 498                         case 'U':
 499                                 options->username = pg_strdup(optarg);
 500                                 break;
 501                         case 'v':
 502                                 {
 503                                         char       *value;
 504                                         char       *equal_loc;
 505
 506                                         value = pg_strdup(optarg);
 507                                         equal_loc = strchr(value, '=');
 508                                         if (!equal_loc)
 509                                         {
 510                                                 if (!DeleteVariable(pset.vars, value))
 511                                                 {
 512                                                         fprintf(stderr, _("%s: could not delete variable \"%s\"\n"),
 513                                                                         pset.progname, value);
 514                                                         exit(EXIT_FAILURE);
 515                                                 }
 516                                         }
 517                                         else
 518                                         {
 519                                                 *equal_loc = '\0';
 520                                                 if (!SetVariable(pset.vars, value, equal_loc + 1))
 521                                                 {
 522                                                         fprintf(stderr, _("%s: could not set variable \"%s\"\n"),
 523                                                                         pset.progname, value);
 524                                                         exit(EXIT_FAILURE);
 525                                                 }
 526                                         }
 527
 528                                         free(value);
 529                                         break;
 530                                 }
 531                         case 'V':
 532                                 showVersion();
 533                                 exit(EXIT_SUCCESS);
 534                         case 'w':
 535                                 pset.getPassword = TRI_NO;
 536                                 break;
 537                         case 'W':
 538                                 pset.getPassword = TRI_YES;
 539                                 break;
 540                         case 'x':
 541                                 pset.popt.topt.expanded = true;
 542                                 break;
 543                         case 'X':
 544                                 options->no_psqlrc = true;
 545                                 break;
 546                         case 'z':
 547                                 pset.popt.topt.fieldSep.separator_zero = true;
 548                                 break;
 549                         case '0':
 550                                 pset.popt.topt.recordSep.separator_zero = true;
 551                                 break;
 552                         case '1':
 553                                 options->single_txn = true;
 554                                 break;
 555                         case '?':
 556                                 /* Actual help option given */
 557                                 if (strcmp(argv[optind - 1], "--help") == 0 || strcmp(argv[optind - 1], "-?") == 0)
 558                                 {
 559                                         usage();
 560                                         exit(EXIT_SUCCESS);
 561                                 }
 562                                 /* unknown option reported by getopt */
 563                                 else
 564                                 {
 565                                         fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
 566                                                         pset.progname);
 567                                         exit(EXIT_FAILURE);
 568                                 }
 569                                 break;
 570                         default:
 571                                 fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
 572                                                 pset.progname);
 573                                 exit(EXIT_FAILURE);
 574                                 break;
 575                 }
 576         }
 577
 578         /*
 579          * if we still have arguments, use it as the database name and username
 580          */
 581         while (argc - optind >= 1)
 582         {
 583                 if (!options->dbname)
 584                         options->dbname = argv[optind];
 585                 else if (!options->username)
 586                         options->username = argv[optind];
 587                 else if (!pset.quiet)
 588                         fprintf(stderr, _("%s: warning: extra command-line argument \"%s\" ignored\n"),
 589                                         pset.progname, argv[optind]);
 590
 591                 optind++;
 592         }
 593 }
 594
 595
 596 /*
 597  * Load .psqlrc file, if found.
 598  */
 599 static void
 600 process_psqlrc(char *argv0)
 601 {
 602         char            home[MAXPGPATH];
 603         char            rc_file[MAXPGPATH];
 604         char            my_exec_path[MAXPGPATH];
 605         char            etc_path[MAXPGPATH];
 606         char       *envrc = getenv("PSQLRC");
 607
 608         find_my_exec(argv0, my_exec_path);
 609         get_etc_path(my_exec_path, etc_path);
 610
 611         snprintf(rc_file, MAXPGPATH, "%s/%s", etc_path, SYSPSQLRC);
 612         process_psqlrc_file(rc_file);
 613
 614         if (envrc != NULL && strlen(envrc) > 0)
 615         {
 616                 /* might need to free() this */
 617                 char       *envrc_alloc = pstrdup(envrc);
 618
 619                 expand_tilde(&envrc_alloc);
 620                 process_psqlrc_file(envrc_alloc);
 621         }
 622         else if (get_home_path(home))
 623         {
 624                 snprintf(rc_file, MAXPGPATH, "%s/%s", home, PSQLRC);
 625                 process_psqlrc_file(rc_file);
 626         }
 627 }
 628
 629
 630
 631 static void
 632 process_psqlrc_file(char *filename)
 633 {
 634         char       *psqlrc_minor,
 635                            *psqlrc_major;
 636
 637 #if defined(WIN32) && (!defined(__MINGW32__))
 638 #define R_OK 4
 639 #endif
 640
 641         psqlrc_minor = psprintf("%s-%s", filename, PG_VERSION);
 642         psqlrc_major = psprintf("%s-%s", filename, PG_MAJORVERSION);
 643
 644         /* check for minor version first, then major, then no version */
 645         if (access(psqlrc_minor, R_OK) == 0)
 646                 (void) process_file(psqlrc_minor, false, false);
 647         else if (access(psqlrc_major, R_OK) == 0)
 648                 (void) process_file(psqlrc_major, false, false);
 649         else if (access(filename, R_OK) == 0)
 650                 (void) process_file(filename, false, false);
 651
 652         free(psqlrc_minor);
 653         free(psqlrc_major);
 654 }
 655
 656
 657
 658 /* showVersion
 659  *
 660  * This output format is intended to match GNU standards.
 661  */
 662 static void
 663 showVersion(void)
 664 {
 665         puts("psql (PostgreSQL) " PG_VERSION);
 666 }
 667
 668
 669
 670 /*
 671  * Assign hooks for psql variables.
 672  *
 673  * This isn't an amazingly good place for them, but neither is anywhere else.
 674  */
 675
 676 static void
 677 autocommit_hook(const char *newval)
 678 {
 679         pset.autocommit = ParseVariableBool(newval);
 680 }
 681
 682 static void
 683 on_error_stop_hook(const char *newval)
 684 {
 685         pset.on_error_stop = ParseVariableBool(newval);
 686 }
 687
 688 static void
 689 quiet_hook(const char *newval)
 690 {
 691         pset.quiet = ParseVariableBool(newval);
 692 }
 693
 694 static void
 695 singleline_hook(const char *newval)
 696 {
 697         pset.singleline = ParseVariableBool(newval);
 698 }
 699
 700 static void
 701 singlestep_hook(const char *newval)
 702 {
 703         pset.singlestep = ParseVariableBool(newval);
 704 }
 705
 706 static void
 707 fetch_count_hook(const char *newval)
 708 {
 709         pset.fetch_count = ParseVariableNum(newval, -1, -1, false);
 710 }
 711
 712 static void
 713 echo_hook(const char *newval)
 714 {
 715         if (newval == NULL)
 716                 pset.echo = PSQL_ECHO_NONE;
 717         else if (strcmp(newval, "queries") == 0)
 718                 pset.echo = PSQL_ECHO_QUERIES;
 719         else if (strcmp(newval, "all") == 0)
 720                 pset.echo = PSQL_ECHO_ALL;
 721         else
 722                 pset.echo = PSQL_ECHO_NONE;
 723 }
 724
 725 static void
 726 echo_hidden_hook(const char *newval)
 727 {
 728         if (newval == NULL)
 729                 pset.echo_hidden = PSQL_ECHO_HIDDEN_OFF;
 730         else if (strcmp(newval, "noexec") == 0)
 731                 pset.echo_hidden = PSQL_ECHO_HIDDEN_NOEXEC;
 732         else if (pg_strcasecmp(newval, "off") == 0)
 733                 pset.echo_hidden = PSQL_ECHO_HIDDEN_OFF;
 734         else
 735                 pset.echo_hidden = PSQL_ECHO_HIDDEN_ON;
 736 }
 737
 738 static void
 739 on_error_rollback_hook(const char *newval)
 740 {
 741         if (newval == NULL)
 742                 pset.on_error_rollback = PSQL_ERROR_ROLLBACK_OFF;
 743         else if (pg_strcasecmp(newval, "interactive") == 0)
 744                 pset.on_error_rollback = PSQL_ERROR_ROLLBACK_INTERACTIVE;
 745         else if (pg_strcasecmp(newval, "off") == 0)
 746                 pset.on_error_rollback = PSQL_ERROR_ROLLBACK_OFF;
 747         else
 748                 pset.on_error_rollback = PSQL_ERROR_ROLLBACK_ON;
 749 }
 750
 751 static void
 752 histcontrol_hook(const char *newval)
 753 {
 754         if (newval == NULL)
 755                 pset.histcontrol = hctl_none;
 756         else if (strcmp(newval, "ignorespace") == 0)
 757                 pset.histcontrol = hctl_ignorespace;
 758         else if (strcmp(newval, "ignoredups") == 0)
 759                 pset.histcontrol = hctl_ignoredups;
 760         else if (strcmp(newval, "ignoreboth") == 0)
 761                 pset.histcontrol = hctl_ignoreboth;
 762         else
 763                 pset.histcontrol = hctl_none;
 764 }
 765
 766 static void
 767 prompt1_hook(const char *newval)
 768 {
 769         pset.prompt1 = newval ? newval : "";
 770 }
 771
 772 static void
 773 prompt2_hook(const char *newval)
 774 {
 775         pset.prompt2 = newval ? newval : "";
 776 }
 777
 778 static void
 779 prompt3_hook(const char *newval)
 780 {
 781         pset.prompt3 = newval ? newval : "";
 782 }
 783
 784 static void
 785 verbosity_hook(const char *newval)
 786 {
 787         if (newval == NULL)
 788                 pset.verbosity = PQERRORS_DEFAULT;
 789         else if (strcmp(newval, "default") == 0)
 790                 pset.verbosity = PQERRORS_DEFAULT;
 791         else if (strcmp(newval, "terse") == 0)
 792                 pset.verbosity = PQERRORS_TERSE;
 793         else if (strcmp(newval, "verbose") == 0)
 794                 pset.verbosity = PQERRORS_VERBOSE;
 795         else
 796                 pset.verbosity = PQERRORS_DEFAULT;
 797
 798         if (pset.db)
 799                 PQsetErrorVerbosity(pset.db, pset.verbosity);
 800 }
 801
 802
 803 static void
 804 EstablishVariableSpace(void)
 805 {
 806         pset.vars = CreateVariableSpace();
 807
 808         SetVariableAssignHook(pset.vars, "AUTOCOMMIT", autocommit_hook);
 809         SetVariableAssignHook(pset.vars, "ON_ERROR_STOP", on_error_stop_hook);
 810         SetVariableAssignHook(pset.vars, "QUIET", quiet_hook);
 811         SetVariableAssignHook(pset.vars, "SINGLELINE", singleline_hook);
 812         SetVariableAssignHook(pset.vars, "SINGLESTEP", singlestep_hook);
 813         SetVariableAssignHook(pset.vars, "FETCH_COUNT", fetch_count_hook);
 814         SetVariableAssignHook(pset.vars, "ECHO", echo_hook);
 815         SetVariableAssignHook(pset.vars, "ECHO_HIDDEN", echo_hidden_hook);
 816         SetVariableAssignHook(pset.vars, "ON_ERROR_ROLLBACK", on_error_rollback_hook);
 817         SetVariableAssignHook(pset.vars, "HISTCONTROL", histcontrol_hook);
 818         SetVariableAssignHook(pset.vars, "PROMPT1", prompt1_hook);
 819         SetVariableAssignHook(pset.vars, "PROMPT2", prompt2_hook);
 820         SetVariableAssignHook(pset.vars, "PROMPT3", prompt3_hook);
 821         SetVariableAssignHook(pset.vars, "VERBOSITY", verbosity_hook);
 822 }