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postgresql/src/bin/psql/startup.c

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/*
* psql - the PostgreSQL interactive terminal
*
* Copyright (c) 2000-2024, 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 "common/string.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;
}
}
#ifndef WIN32
static void
empty_signal_handler(SIGNAL_ARGS)
{
}
#endif
/*
*
* main
*
*/
int
main(int argc, char *argv[])
{
struct adhoc_opts options;
int successResult;
char *password = NULL;
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;
pset.dead_conn = 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);
SetVariableBool(pset.vars, "SHOW_ALL_RESULTS");
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_fatal("-1 can only be used in non-interactive mode");
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. (Note: since we've not yet set up our
* cancel handler, there's no need to use simple_prompt_extended.)
*/
password = simple_prompt("Password: ", false);
}
/* loop until we have a password if requested by backend */
do
{
#define PARAMS_ARRAY_SIZE 8
const char **keywords = pg_malloc_array(const char *, PARAMS_ARRAY_SIZE);
const char **values = pg_malloc_array(const char *, PARAMS_ARRAY_SIZE);
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] = password;
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) &&
!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);
password = simple_prompt(password_prompt, false);
free(password_prompt);
new_pass = true;
}
} while (new_pass);
if (PQstatus(pset.db) == CONNECTION_BAD)
{
pg_log_error("%s", PQerrorMessage(pset.db));
PQfinish(pset.db);
exit(EXIT_BADCONN);
}
psql_setup_cancel_handler();
#ifndef WIN32
/*
* do_watch() needs signal handlers installed (otherwise sigwait() will
* filter them out on some platforms), but doesn't need them to do
* anything, and they shouldn't ever run (unless perhaps a stray SIGALRM
* arrives due to a race when do_watch() cancels an itimer).
*/
pqsignal(SIGCHLD, empty_signal_handler);
pqsignal(SIGALRM, empty_signal_handler);
#endif
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_fatal("could not open log file \"%s\": %m",
options.logfilename);
}
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)
{
/*
* Rollback the contents of the single transaction if the caller
* has set ON_ERROR_STOP and one of the steps has failed. This
* check needs to match the one done a couple of lines above.
*/
res = PSQLexec((successResult != EXIT_SUCCESS && pset.on_error_stop) ?
"ROLLBACK" : "COMMIT");
if (res == 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);
if (pset.db)
PQfinish(pset.db);
if (pset.dead_conn)
PQfinish(pset.dead_conn);
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_fatal("could not set printing parameter \"%s\"", value);
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:
/* getopt_long already emitted a complaint */
pg_log_error_hint("Try \"%s --help\" for more information.",
pset.progname);
exit(EXIT_FAILURE);
}
}
/*
* 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 = pg_malloc_object(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_fatal("could not find own program executable");
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 bool
show_all_results_hook(const char *newval)
{
return ParseVariableBool(newval, "SHOW_ALL_RESULTS", &pset.show_all_results);
}
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_compression_hook(const char *newval)
{
return ParseVariableBool(newval, "HIDE_TOAST_COMPRESSION",
&pset.hide_compression);
}
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_ALL_RESULTS",
bool_substitute_hook,
show_all_results_hook);
SetVariableHooks(pset.vars, "SHOW_CONTEXT",
show_context_substitute_hook,
show_context_hook);
SetVariableHooks(pset.vars, "HIDE_TOAST_COMPRESSION",
bool_substitute_hook,
hide_compression_hook);
SetVariableHooks(pset.vars, "HIDE_TABLEAM",
bool_substitute_hook,
hide_tableam_hook);
}
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