/src/bin/psql/startup.c
C | 1231 lines | 995 code | 140 blank | 96 comment | 208 complexity | 66657c7bfa70403e924992461aff23c6 MD5 | raw file
Possible License(s): AGPL-3.0
- /*
- * psql - the PostgreSQL interactive terminal
- *
- * Copyright (c) 2000-2020, PostgreSQL Global Development Group
- *
- * src/bin/psql/startup.c
- */
- #include "postgres_fe.h"
- #ifndef WIN32
- #include <unistd.h>
- #else /* WIN32 */
- #include <io.h>
- #include <win32.h>
- #endif /* WIN32 */
- #include "command.h"
- #include "common.h"
- #include "common/logging.h"
- #include "describe.h"
- #include "fe_utils/print.h"
- #include "getopt_long.h"
- #include "help.h"
- #include "input.h"
- #include "mainloop.h"
- #include "settings.h"
- /*
- * Global psql options
- */
- PsqlSettings pset;
- #ifndef WIN32
- #define SYSPSQLRC "psqlrc"
- #define PSQLRC ".psqlrc"
- #else
- #define SYSPSQLRC "psqlrc"
- #define PSQLRC "psqlrc.conf"
- #endif
- /*
- * Structures to pass information between the option parsing routine
- * and the main function
- */
- enum _actions
- {
- ACT_SINGLE_QUERY,
- ACT_SINGLE_SLASH,
- ACT_FILE
- };
- typedef struct SimpleActionListCell
- {
- struct SimpleActionListCell *next;
- enum _actions action;
- char *val;
- } SimpleActionListCell;
- typedef struct SimpleActionList
- {
- SimpleActionListCell *head;
- SimpleActionListCell *tail;
- } SimpleActionList;
- struct adhoc_opts
- {
- char *dbname;
- char *host;
- char *port;
- char *username;
- char *logfilename;
- bool no_readline;
- bool no_psqlrc;
- bool single_txn;
- bool list_dbs;
- SimpleActionList actions;
- };
- static void parse_psql_options(int argc, char *argv[],
- struct adhoc_opts *options);
- static void simple_action_list_append(SimpleActionList *list,
- enum _actions action, const char *val);
- static void process_psqlrc(char *argv0);
- static void process_psqlrc_file(char *filename);
- static void showVersion(void);
- static void EstablishVariableSpace(void);
- #define NOPAGER 0
- static void
- log_pre_callback(void)
- {
- if (pset.queryFout && pset.queryFout != stdout)
- fflush(pset.queryFout);
- }
- static void
- log_locus_callback(const char **filename, uint64 *lineno)
- {
- if (pset.inputfile)
- {
- *filename = pset.inputfile;
- *lineno = pset.lineno;
- }
- else
- {
- *filename = NULL;
- *lineno = 0;
- }
- }
- /*
- *
- * main
- *
- */
- int
- main(int argc, char *argv[])
- {
- struct adhoc_opts options;
- int successResult;
- bool have_password = false;
- char password[100];
- bool new_pass;
- pg_logging_init(argv[0]);
- pg_logging_set_pre_callback(log_pre_callback);
- pg_logging_set_locus_callback(log_locus_callback);
- set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("psql"));
- if (argc > 1)
- {
- if ((strcmp(argv[1], "-?") == 0) || (argc == 2 && (strcmp(argv[1], "--help") == 0)))
- {
- usage(NOPAGER);
- exit(EXIT_SUCCESS);
- }
- if (strcmp(argv[1], "--version") == 0 || strcmp(argv[1], "-V") == 0)
- {
- showVersion();
- exit(EXIT_SUCCESS);
- }
- }
- pset.progname = get_progname(argv[0]);
- pset.db = NULL;
- setDecimalLocale();
- pset.encoding = PQenv2encoding();
- pset.queryFout = stdout;
- pset.queryFoutPipe = false;
- pset.copyStream = NULL;
- pset.last_error_result = NULL;
- pset.cur_cmd_source = stdin;
- pset.cur_cmd_interactive = false;
- /* We rely on unmentioned fields of pset.popt to start out 0/false/NULL */
- pset.popt.topt.format = PRINT_ALIGNED;
- pset.popt.topt.border = 1;
- pset.popt.topt.pager = 1;
- pset.popt.topt.pager_min_lines = 0;
- pset.popt.topt.start_table = true;
- pset.popt.topt.stop_table = true;
- pset.popt.topt.default_footer = true;
- pset.popt.topt.csvFieldSep[0] = DEFAULT_CSV_FIELD_SEP;
- pset.popt.topt.csvFieldSep[1] = '\0';
- pset.popt.topt.unicode_border_linestyle = UNICODE_LINESTYLE_SINGLE;
- pset.popt.topt.unicode_column_linestyle = UNICODE_LINESTYLE_SINGLE;
- pset.popt.topt.unicode_header_linestyle = UNICODE_LINESTYLE_SINGLE;
- refresh_utf8format(&(pset.popt.topt));
- /* We must get COLUMNS here before readline() sets it */
- pset.popt.topt.env_columns = getenv("COLUMNS") ? atoi(getenv("COLUMNS")) : 0;
- pset.notty = (!isatty(fileno(stdin)) || !isatty(fileno(stdout)));
- pset.getPassword = TRI_DEFAULT;
- EstablishVariableSpace();
- /* Create variables showing psql version number */
- SetVariable(pset.vars, "VERSION", PG_VERSION_STR);
- SetVariable(pset.vars, "VERSION_NAME", PG_VERSION);
- SetVariable(pset.vars, "VERSION_NUM", CppAsString2(PG_VERSION_NUM));
- /* Initialize variables for last error */
- SetVariable(pset.vars, "LAST_ERROR_MESSAGE", "");
- SetVariable(pset.vars, "LAST_ERROR_SQLSTATE", "00000");
- /* Default values for variables (that don't match the result of \unset) */
- SetVariableBool(pset.vars, "AUTOCOMMIT");
- SetVariable(pset.vars, "PROMPT1", DEFAULT_PROMPT1);
- SetVariable(pset.vars, "PROMPT2", DEFAULT_PROMPT2);
- SetVariable(pset.vars, "PROMPT3", DEFAULT_PROMPT3);
- parse_psql_options(argc, argv, &options);
- /*
- * If no action was specified and we're in non-interactive mode, treat it
- * as if the user had specified "-f -". This lets single-transaction mode
- * work in this case.
- */
- if (options.actions.head == NULL && pset.notty)
- simple_action_list_append(&options.actions, ACT_FILE, NULL);
- /* Bail out if -1 was specified but will be ignored. */
- if (options.single_txn && options.actions.head == NULL)
- {
- pg_log_fatal("-1 can only be used in non-interactive mode");
- exit(EXIT_FAILURE);
- }
- if (!pset.popt.topt.fieldSep.separator &&
- !pset.popt.topt.fieldSep.separator_zero)
- {
- pset.popt.topt.fieldSep.separator = pg_strdup(DEFAULT_FIELD_SEP);
- pset.popt.topt.fieldSep.separator_zero = false;
- }
- if (!pset.popt.topt.recordSep.separator &&
- !pset.popt.topt.recordSep.separator_zero)
- {
- pset.popt.topt.recordSep.separator = pg_strdup(DEFAULT_RECORD_SEP);
- pset.popt.topt.recordSep.separator_zero = false;
- }
- if (pset.getPassword == TRI_YES)
- {
- /*
- * We can't be sure yet of the username that will be used, so don't
- * offer a potentially wrong one. Typical uses of this option are
- * noninteractive anyway.
- */
- simple_prompt("Password: ", password, sizeof(password), false);
- have_password = true;
- }
- /* loop until we have a password if requested by backend */
- do
- {
- #define PARAMS_ARRAY_SIZE 8
- const char **keywords = pg_malloc(PARAMS_ARRAY_SIZE * sizeof(*keywords));
- const char **values = pg_malloc(PARAMS_ARRAY_SIZE * sizeof(*values));
- keywords[0] = "host";
- values[0] = options.host;
- keywords[1] = "port";
- values[1] = options.port;
- keywords[2] = "user";
- values[2] = options.username;
- keywords[3] = "password";
- values[3] = have_password ? password : NULL;
- keywords[4] = "dbname"; /* see do_connect() */
- values[4] = (options.list_dbs && options.dbname == NULL) ?
- "postgres" : options.dbname;
- keywords[5] = "fallback_application_name";
- values[5] = pset.progname;
- keywords[6] = "client_encoding";
- values[6] = (pset.notty || getenv("PGCLIENTENCODING")) ? NULL : "auto";
- keywords[7] = NULL;
- values[7] = NULL;
- new_pass = false;
- pset.db = PQconnectdbParams(keywords, values, true);
- free(keywords);
- free(values);
- if (PQstatus(pset.db) == CONNECTION_BAD &&
- PQconnectionNeedsPassword(pset.db) &&
- !have_password &&
- pset.getPassword != TRI_NO)
- {
- /*
- * Before closing the old PGconn, extract the user name that was
- * actually connected with --- it might've come out of a URI or
- * connstring "database name" rather than options.username.
- */
- const char *realusername = PQuser(pset.db);
- char *password_prompt;
- if (realusername && realusername[0])
- password_prompt = psprintf(_("Password for user %s: "),
- realusername);
- else
- password_prompt = pg_strdup(_("Password: "));
- PQfinish(pset.db);
- simple_prompt(password_prompt, password, sizeof(password), false);
- free(password_prompt);
- have_password = true;
- new_pass = true;
- }
- } while (new_pass);
- if (PQstatus(pset.db) == CONNECTION_BAD)
- {
- pg_log_error("could not connect to server: %s", PQerrorMessage(pset.db));
- PQfinish(pset.db);
- exit(EXIT_BADCONN);
- }
- psql_setup_cancel_handler();
- PQsetNoticeProcessor(pset.db, NoticeProcessor, NULL);
- SyncVariables();
- if (options.list_dbs)
- {
- int success;
- if (!options.no_psqlrc)
- process_psqlrc(argv[0]);
- success = listAllDbs(NULL, false);
- PQfinish(pset.db);
- exit(success ? EXIT_SUCCESS : EXIT_FAILURE);
- }
- if (options.logfilename)
- {
- pset.logfile = fopen(options.logfilename, "a");
- if (!pset.logfile)
- {
- pg_log_fatal("could not open log file \"%s\": %m",
- options.logfilename);
- exit(EXIT_FAILURE);
- }
- }
- if (!options.no_psqlrc)
- process_psqlrc(argv[0]);
- /*
- * If any actions were given by user, process them in the order in which
- * they were specified. Note single_txn is only effective in this mode.
- */
- if (options.actions.head != NULL)
- {
- PGresult *res;
- SimpleActionListCell *cell;
- successResult = EXIT_SUCCESS; /* silence compiler */
- if (options.single_txn)
- {
- if ((res = PSQLexec("BEGIN")) == NULL)
- {
- if (pset.on_error_stop)
- {
- successResult = EXIT_USER;
- goto error;
- }
- }
- else
- PQclear(res);
- }
- for (cell = options.actions.head; cell; cell = cell->next)
- {
- if (cell->action == ACT_SINGLE_QUERY)
- {
- pg_logging_config(PG_LOG_FLAG_TERSE);
- if (pset.echo == PSQL_ECHO_ALL)
- puts(cell->val);
- successResult = SendQuery(cell->val)
- ? EXIT_SUCCESS : EXIT_FAILURE;
- }
- else if (cell->action == ACT_SINGLE_SLASH)
- {
- PsqlScanState scan_state;
- ConditionalStack cond_stack;
- pg_logging_config(PG_LOG_FLAG_TERSE);
- if (pset.echo == PSQL_ECHO_ALL)
- puts(cell->val);
- scan_state = psql_scan_create(&psqlscan_callbacks);
- psql_scan_setup(scan_state,
- cell->val, strlen(cell->val),
- pset.encoding, standard_strings());
- cond_stack = conditional_stack_create();
- psql_scan_set_passthrough(scan_state, (void *) cond_stack);
- successResult = HandleSlashCmds(scan_state,
- cond_stack,
- NULL,
- NULL) != PSQL_CMD_ERROR
- ? EXIT_SUCCESS : EXIT_FAILURE;
- psql_scan_destroy(scan_state);
- conditional_stack_destroy(cond_stack);
- }
- else if (cell->action == ACT_FILE)
- {
- successResult = process_file(cell->val, false);
- }
- else
- {
- /* should never come here */
- Assert(false);
- }
- if (successResult != EXIT_SUCCESS && pset.on_error_stop)
- break;
- }
- if (options.single_txn)
- {
- if ((res = PSQLexec("COMMIT")) == NULL)
- {
- if (pset.on_error_stop)
- {
- successResult = EXIT_USER;
- goto error;
- }
- }
- else
- PQclear(res);
- }
- error:
- ;
- }
- /*
- * or otherwise enter interactive main loop
- */
- else
- {
- pg_logging_config(PG_LOG_FLAG_TERSE);
- connection_warnings(true);
- if (!pset.quiet)
- printf(_("Type \"help\" for help.\n\n"));
- initializeInput(options.no_readline ? 0 : 1);
- successResult = MainLoop(stdin);
- }
- /* clean up */
- if (pset.logfile)
- fclose(pset.logfile);
- PQfinish(pset.db);
- setQFout(NULL);
- return successResult;
- }
- /*
- * Parse command line options
- */
- static void
- parse_psql_options(int argc, char *argv[], struct adhoc_opts *options)
- {
- static struct option long_options[] =
- {
- {"echo-all", no_argument, NULL, 'a'},
- {"no-align", no_argument, NULL, 'A'},
- {"command", required_argument, NULL, 'c'},
- {"dbname", required_argument, NULL, 'd'},
- {"echo-queries", no_argument, NULL, 'e'},
- {"echo-errors", no_argument, NULL, 'b'},
- {"echo-hidden", no_argument, NULL, 'E'},
- {"file", required_argument, NULL, 'f'},
- {"field-separator", required_argument, NULL, 'F'},
- {"field-separator-zero", no_argument, NULL, 'z'},
- {"host", required_argument, NULL, 'h'},
- {"html", no_argument, NULL, 'H'},
- {"list", no_argument, NULL, 'l'},
- {"log-file", required_argument, NULL, 'L'},
- {"no-readline", no_argument, NULL, 'n'},
- {"single-transaction", no_argument, NULL, '1'},
- {"output", required_argument, NULL, 'o'},
- {"port", required_argument, NULL, 'p'},
- {"pset", required_argument, NULL, 'P'},
- {"quiet", no_argument, NULL, 'q'},
- {"record-separator", required_argument, NULL, 'R'},
- {"record-separator-zero", no_argument, NULL, '0'},
- {"single-step", no_argument, NULL, 's'},
- {"single-line", no_argument, NULL, 'S'},
- {"tuples-only", no_argument, NULL, 't'},
- {"table-attr", required_argument, NULL, 'T'},
- {"username", required_argument, NULL, 'U'},
- {"set", required_argument, NULL, 'v'},
- {"variable", required_argument, NULL, 'v'},
- {"version", no_argument, NULL, 'V'},
- {"no-password", no_argument, NULL, 'w'},
- {"password", no_argument, NULL, 'W'},
- {"expanded", no_argument, NULL, 'x'},
- {"no-psqlrc", no_argument, NULL, 'X'},
- {"help", optional_argument, NULL, 1},
- {"csv", no_argument, NULL, 2},
- {NULL, 0, NULL, 0}
- };
- int optindex;
- int c;
- memset(options, 0, sizeof *options);
- while ((c = getopt_long(argc, argv, "aAbc:d:eEf:F:h:HlL:no:p:P:qR:sStT:U:v:VwWxXz?01",
- long_options, &optindex)) != -1)
- {
- switch (c)
- {
- case 'a':
- SetVariable(pset.vars, "ECHO", "all");
- break;
- case 'A':
- pset.popt.topt.format = PRINT_UNALIGNED;
- break;
- case 'b':
- SetVariable(pset.vars, "ECHO", "errors");
- break;
- case 'c':
- if (optarg[0] == '\\')
- simple_action_list_append(&options->actions,
- ACT_SINGLE_SLASH,
- optarg + 1);
- else
- simple_action_list_append(&options->actions,
- ACT_SINGLE_QUERY,
- optarg);
- break;
- case 'd':
- options->dbname = pg_strdup(optarg);
- break;
- case 'e':
- SetVariable(pset.vars, "ECHO", "queries");
- break;
- case 'E':
- SetVariableBool(pset.vars, "ECHO_HIDDEN");
- break;
- case 'f':
- simple_action_list_append(&options->actions,
- ACT_FILE,
- optarg);
- break;
- case 'F':
- pset.popt.topt.fieldSep.separator = pg_strdup(optarg);
- pset.popt.topt.fieldSep.separator_zero = false;
- break;
- case 'h':
- options->host = pg_strdup(optarg);
- break;
- case 'H':
- pset.popt.topt.format = PRINT_HTML;
- break;
- case 'l':
- options->list_dbs = true;
- break;
- case 'L':
- options->logfilename = pg_strdup(optarg);
- break;
- case 'n':
- options->no_readline = true;
- break;
- case 'o':
- if (!setQFout(optarg))
- exit(EXIT_FAILURE);
- break;
- case 'p':
- options->port = pg_strdup(optarg);
- break;
- case 'P':
- {
- char *value;
- char *equal_loc;
- bool result;
- value = pg_strdup(optarg);
- equal_loc = strchr(value, '=');
- if (!equal_loc)
- result = do_pset(value, NULL, &pset.popt, true);
- else
- {
- *equal_loc = '\0';
- result = do_pset(value, equal_loc + 1, &pset.popt, true);
- }
- if (!result)
- {
- pg_log_fatal("could not set printing parameter \"%s\"", value);
- exit(EXIT_FAILURE);
- }
- free(value);
- break;
- }
- case 'q':
- SetVariableBool(pset.vars, "QUIET");
- break;
- case 'R':
- pset.popt.topt.recordSep.separator = pg_strdup(optarg);
- pset.popt.topt.recordSep.separator_zero = false;
- break;
- case 's':
- SetVariableBool(pset.vars, "SINGLESTEP");
- break;
- case 'S':
- SetVariableBool(pset.vars, "SINGLELINE");
- break;
- case 't':
- pset.popt.topt.tuples_only = true;
- break;
- case 'T':
- pset.popt.topt.tableAttr = pg_strdup(optarg);
- break;
- case 'U':
- options->username = pg_strdup(optarg);
- break;
- case 'v':
- {
- char *value;
- char *equal_loc;
- value = pg_strdup(optarg);
- equal_loc = strchr(value, '=');
- if (!equal_loc)
- {
- if (!DeleteVariable(pset.vars, value))
- exit(EXIT_FAILURE); /* error already printed */
- }
- else
- {
- *equal_loc = '\0';
- if (!SetVariable(pset.vars, value, equal_loc + 1))
- exit(EXIT_FAILURE); /* error already printed */
- }
- free(value);
- break;
- }
- case 'V':
- showVersion();
- exit(EXIT_SUCCESS);
- case 'w':
- pset.getPassword = TRI_NO;
- break;
- case 'W':
- pset.getPassword = TRI_YES;
- break;
- case 'x':
- pset.popt.topt.expanded = true;
- break;
- case 'X':
- options->no_psqlrc = true;
- break;
- case 'z':
- pset.popt.topt.fieldSep.separator_zero = true;
- break;
- case '0':
- pset.popt.topt.recordSep.separator_zero = true;
- break;
- case '1':
- options->single_txn = true;
- break;
- case '?':
- if (optind <= argc &&
- strcmp(argv[optind - 1], "-?") == 0)
- {
- /* actual help option given */
- usage(NOPAGER);
- exit(EXIT_SUCCESS);
- }
- else
- {
- /* getopt error (unknown option or missing argument) */
- goto unknown_option;
- }
- break;
- case 1:
- {
- if (!optarg || strcmp(optarg, "options") == 0)
- usage(NOPAGER);
- else if (optarg && strcmp(optarg, "commands") == 0)
- slashUsage(NOPAGER);
- else if (optarg && strcmp(optarg, "variables") == 0)
- helpVariables(NOPAGER);
- else
- goto unknown_option;
- exit(EXIT_SUCCESS);
- }
- break;
- case 2:
- pset.popt.topt.format = PRINT_CSV;
- break;
- default:
- unknown_option:
- fprintf(stderr, _("Try \"%s --help\" for more information.\n"),
- pset.progname);
- exit(EXIT_FAILURE);
- break;
- }
- }
- /*
- * if we still have arguments, use it as the database name and username
- */
- while (argc - optind >= 1)
- {
- if (!options->dbname)
- options->dbname = argv[optind];
- else if (!options->username)
- options->username = argv[optind];
- else if (!pset.quiet)
- pg_log_warning("extra command-line argument \"%s\" ignored",
- argv[optind]);
- optind++;
- }
- }
- /*
- * Append a new item to the end of the SimpleActionList.
- * Note that "val" is copied if it's not NULL.
- */
- static void
- simple_action_list_append(SimpleActionList *list,
- enum _actions action, const char *val)
- {
- SimpleActionListCell *cell;
- cell = (SimpleActionListCell *) pg_malloc(sizeof(SimpleActionListCell));
- cell->next = NULL;
- cell->action = action;
- if (val)
- cell->val = pg_strdup(val);
- else
- cell->val = NULL;
- if (list->tail)
- list->tail->next = cell;
- else
- list->head = cell;
- list->tail = cell;
- }
- /*
- * Load .psqlrc file, if found.
- */
- static void
- process_psqlrc(char *argv0)
- {
- char home[MAXPGPATH];
- char rc_file[MAXPGPATH];
- char my_exec_path[MAXPGPATH];
- char etc_path[MAXPGPATH];
- char *envrc = getenv("PSQLRC");
- if (find_my_exec(argv0, my_exec_path) < 0)
- {
- pg_log_fatal("could not find own program executable");
- exit(EXIT_FAILURE);
- }
- get_etc_path(my_exec_path, etc_path);
- snprintf(rc_file, MAXPGPATH, "%s/%s", etc_path, SYSPSQLRC);
- process_psqlrc_file(rc_file);
- if (envrc != NULL && strlen(envrc) > 0)
- {
- /* might need to free() this */
- char *envrc_alloc = pstrdup(envrc);
- expand_tilde(&envrc_alloc);
- process_psqlrc_file(envrc_alloc);
- }
- else if (get_home_path(home))
- {
- snprintf(rc_file, MAXPGPATH, "%s/%s", home, PSQLRC);
- process_psqlrc_file(rc_file);
- }
- }
- static void
- process_psqlrc_file(char *filename)
- {
- char *psqlrc_minor,
- *psqlrc_major;
- #if defined(WIN32) && (!defined(__MINGW32__))
- #define R_OK 4
- #endif
- psqlrc_minor = psprintf("%s-%s", filename, PG_VERSION);
- psqlrc_major = psprintf("%s-%s", filename, PG_MAJORVERSION);
- /* check for minor version first, then major, then no version */
- if (access(psqlrc_minor, R_OK) == 0)
- (void) process_file(psqlrc_minor, false);
- else if (access(psqlrc_major, R_OK) == 0)
- (void) process_file(psqlrc_major, false);
- else if (access(filename, R_OK) == 0)
- (void) process_file(filename, false);
- free(psqlrc_minor);
- free(psqlrc_major);
- }
- /* showVersion
- *
- * This output format is intended to match GNU standards.
- */
- static void
- showVersion(void)
- {
- puts("psql (PostgreSQL) " PG_VERSION);
- }
- /*
- * Substitute hooks and assign hooks for psql variables.
- *
- * This isn't an amazingly good place for them, but neither is anywhere else.
- *
- * By policy, every special variable that controls any psql behavior should
- * have one or both hooks, even if they're just no-ops. This ensures that
- * the variable will remain present in variables.c's list even when unset,
- * which ensures that it's known to tab completion.
- */
- static char *
- bool_substitute_hook(char *newval)
- {
- if (newval == NULL)
- {
- /* "\unset FOO" becomes "\set FOO off" */
- newval = pg_strdup("off");
- }
- else if (newval[0] == '\0')
- {
- /* "\set FOO" becomes "\set FOO on" */
- pg_free(newval);
- newval = pg_strdup("on");
- }
- return newval;
- }
- static bool
- autocommit_hook(const char *newval)
- {
- return ParseVariableBool(newval, "AUTOCOMMIT", &pset.autocommit);
- }
- static bool
- on_error_stop_hook(const char *newval)
- {
- return ParseVariableBool(newval, "ON_ERROR_STOP", &pset.on_error_stop);
- }
- static bool
- quiet_hook(const char *newval)
- {
- return ParseVariableBool(newval, "QUIET", &pset.quiet);
- }
- static bool
- singleline_hook(const char *newval)
- {
- return ParseVariableBool(newval, "SINGLELINE", &pset.singleline);
- }
- static bool
- singlestep_hook(const char *newval)
- {
- return ParseVariableBool(newval, "SINGLESTEP", &pset.singlestep);
- }
- static char *
- fetch_count_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("0");
- return newval;
- }
- static bool
- fetch_count_hook(const char *newval)
- {
- return ParseVariableNum(newval, "FETCH_COUNT", &pset.fetch_count);
- }
- static bool
- histfile_hook(const char *newval)
- {
- /*
- * Someday we might try to validate the filename, but for now, this is
- * just a placeholder to ensure HISTFILE is known to tab completion.
- */
- return true;
- }
- static char *
- histsize_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("500");
- return newval;
- }
- static bool
- histsize_hook(const char *newval)
- {
- return ParseVariableNum(newval, "HISTSIZE", &pset.histsize);
- }
- static char *
- ignoreeof_substitute_hook(char *newval)
- {
- int dummy;
- /*
- * This tries to mimic the behavior of bash, to wit "If set, the value is
- * the number of consecutive EOF characters which must be typed as the
- * first characters on an input line before bash exits. If the variable
- * exists but does not have a numeric value, or has no value, the default
- * value is 10. If it does not exist, EOF signifies the end of input to
- * the shell." Unlike bash, however, we insist on the stored value
- * actually being a valid integer.
- */
- if (newval == NULL)
- newval = pg_strdup("0");
- else if (!ParseVariableNum(newval, NULL, &dummy))
- newval = pg_strdup("10");
- return newval;
- }
- static bool
- ignoreeof_hook(const char *newval)
- {
- return ParseVariableNum(newval, "IGNOREEOF", &pset.ignoreeof);
- }
- static char *
- echo_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("none");
- return newval;
- }
- static bool
- echo_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "queries") == 0)
- pset.echo = PSQL_ECHO_QUERIES;
- else if (pg_strcasecmp(newval, "errors") == 0)
- pset.echo = PSQL_ECHO_ERRORS;
- else if (pg_strcasecmp(newval, "all") == 0)
- pset.echo = PSQL_ECHO_ALL;
- else if (pg_strcasecmp(newval, "none") == 0)
- pset.echo = PSQL_ECHO_NONE;
- else
- {
- PsqlVarEnumError("ECHO", newval, "none, errors, queries, all");
- return false;
- }
- return true;
- }
- static bool
- echo_hidden_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "noexec") == 0)
- pset.echo_hidden = PSQL_ECHO_HIDDEN_NOEXEC;
- else
- {
- bool on_off;
- if (ParseVariableBool(newval, NULL, &on_off))
- pset.echo_hidden = on_off ? PSQL_ECHO_HIDDEN_ON : PSQL_ECHO_HIDDEN_OFF;
- else
- {
- PsqlVarEnumError("ECHO_HIDDEN", newval, "on, off, noexec");
- return false;
- }
- }
- return true;
- }
- static bool
- on_error_rollback_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "interactive") == 0)
- pset.on_error_rollback = PSQL_ERROR_ROLLBACK_INTERACTIVE;
- else
- {
- bool on_off;
- if (ParseVariableBool(newval, NULL, &on_off))
- pset.on_error_rollback = on_off ? PSQL_ERROR_ROLLBACK_ON : PSQL_ERROR_ROLLBACK_OFF;
- else
- {
- PsqlVarEnumError("ON_ERROR_ROLLBACK", newval, "on, off, interactive");
- return false;
- }
- }
- return true;
- }
- static char *
- comp_keyword_case_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("preserve-upper");
- return newval;
- }
- static bool
- comp_keyword_case_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "preserve-upper") == 0)
- pset.comp_case = PSQL_COMP_CASE_PRESERVE_UPPER;
- else if (pg_strcasecmp(newval, "preserve-lower") == 0)
- pset.comp_case = PSQL_COMP_CASE_PRESERVE_LOWER;
- else if (pg_strcasecmp(newval, "upper") == 0)
- pset.comp_case = PSQL_COMP_CASE_UPPER;
- else if (pg_strcasecmp(newval, "lower") == 0)
- pset.comp_case = PSQL_COMP_CASE_LOWER;
- else
- {
- PsqlVarEnumError("COMP_KEYWORD_CASE", newval,
- "lower, upper, preserve-lower, preserve-upper");
- return false;
- }
- return true;
- }
- static char *
- histcontrol_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("none");
- return newval;
- }
- static bool
- histcontrol_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "ignorespace") == 0)
- pset.histcontrol = hctl_ignorespace;
- else if (pg_strcasecmp(newval, "ignoredups") == 0)
- pset.histcontrol = hctl_ignoredups;
- else if (pg_strcasecmp(newval, "ignoreboth") == 0)
- pset.histcontrol = hctl_ignoreboth;
- else if (pg_strcasecmp(newval, "none") == 0)
- pset.histcontrol = hctl_none;
- else
- {
- PsqlVarEnumError("HISTCONTROL", newval,
- "none, ignorespace, ignoredups, ignoreboth");
- return false;
- }
- return true;
- }
- static bool
- prompt1_hook(const char *newval)
- {
- pset.prompt1 = newval ? newval : "";
- return true;
- }
- static bool
- prompt2_hook(const char *newval)
- {
- pset.prompt2 = newval ? newval : "";
- return true;
- }
- static bool
- prompt3_hook(const char *newval)
- {
- pset.prompt3 = newval ? newval : "";
- return true;
- }
- static char *
- verbosity_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("default");
- return newval;
- }
- static bool
- verbosity_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "default") == 0)
- pset.verbosity = PQERRORS_DEFAULT;
- else if (pg_strcasecmp(newval, "verbose") == 0)
- pset.verbosity = PQERRORS_VERBOSE;
- else if (pg_strcasecmp(newval, "terse") == 0)
- pset.verbosity = PQERRORS_TERSE;
- else if (pg_strcasecmp(newval, "sqlstate") == 0)
- pset.verbosity = PQERRORS_SQLSTATE;
- else
- {
- PsqlVarEnumError("VERBOSITY", newval, "default, verbose, terse, sqlstate");
- return false;
- }
- if (pset.db)
- PQsetErrorVerbosity(pset.db, pset.verbosity);
- return true;
- }
- static char *
- show_context_substitute_hook(char *newval)
- {
- if (newval == NULL)
- newval = pg_strdup("errors");
- return newval;
- }
- static bool
- show_context_hook(const char *newval)
- {
- Assert(newval != NULL); /* else substitute hook messed up */
- if (pg_strcasecmp(newval, "never") == 0)
- pset.show_context = PQSHOW_CONTEXT_NEVER;
- else if (pg_strcasecmp(newval, "errors") == 0)
- pset.show_context = PQSHOW_CONTEXT_ERRORS;
- else if (pg_strcasecmp(newval, "always") == 0)
- pset.show_context = PQSHOW_CONTEXT_ALWAYS;
- else
- {
- PsqlVarEnumError("SHOW_CONTEXT", newval, "never, errors, always");
- return false;
- }
- if (pset.db)
- PQsetErrorContextVisibility(pset.db, pset.show_context);
- return true;
- }
- static bool
- hide_tableam_hook(const char *newval)
- {
- return ParseVariableBool(newval, "HIDE_TABLEAM", &pset.hide_tableam);
- }
- static void
- EstablishVariableSpace(void)
- {
- pset.vars = CreateVariableSpace();
- SetVariableHooks(pset.vars, "AUTOCOMMIT",
- bool_substitute_hook,
- autocommit_hook);
- SetVariableHooks(pset.vars, "ON_ERROR_STOP",
- bool_substitute_hook,
- on_error_stop_hook);
- SetVariableHooks(pset.vars, "QUIET",
- bool_substitute_hook,
- quiet_hook);
- SetVariableHooks(pset.vars, "SINGLELINE",
- bool_substitute_hook,
- singleline_hook);
- SetVariableHooks(pset.vars, "SINGLESTEP",
- bool_substitute_hook,
- singlestep_hook);
- SetVariableHooks(pset.vars, "FETCH_COUNT",
- fetch_count_substitute_hook,
- fetch_count_hook);
- SetVariableHooks(pset.vars, "HISTFILE",
- NULL,
- histfile_hook);
- SetVariableHooks(pset.vars, "HISTSIZE",
- histsize_substitute_hook,
- histsize_hook);
- SetVariableHooks(pset.vars, "IGNOREEOF",
- ignoreeof_substitute_hook,
- ignoreeof_hook);
- SetVariableHooks(pset.vars, "ECHO",
- echo_substitute_hook,
- echo_hook);
- SetVariableHooks(pset.vars, "ECHO_HIDDEN",
- bool_substitute_hook,
- echo_hidden_hook);
- SetVariableHooks(pset.vars, "ON_ERROR_ROLLBACK",
- bool_substitute_hook,
- on_error_rollback_hook);
- SetVariableHooks(pset.vars, "COMP_KEYWORD_CASE",
- comp_keyword_case_substitute_hook,
- comp_keyword_case_hook);
- SetVariableHooks(pset.vars, "HISTCONTROL",
- histcontrol_substitute_hook,
- histcontrol_hook);
- SetVariableHooks(pset.vars, "PROMPT1",
- NULL,
- prompt1_hook);
- SetVariableHooks(pset.vars, "PROMPT2",
- NULL,
- prompt2_hook);
- SetVariableHooks(pset.vars, "PROMPT3",
- NULL,
- prompt3_hook);
- SetVariableHooks(pset.vars, "VERBOSITY",
- verbosity_substitute_hook,
- verbosity_hook);
- SetVariableHooks(pset.vars, "SHOW_CONTEXT",
- show_context_substitute_hook,
- show_context_hook);
- SetVariableHooks(pset.vars, "HIDE_TABLEAM",
- bool_substitute_hook,
- hide_tableam_hook);
- }