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postgres/src/bin/psql/help.c
Peter Eisentraut 5878a377ba Review program help output for wording and formatting
2015-09-16 00:59:28 -04:00

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/*
* psql - the PostgreSQL interactive terminal
*
* Copyright (c) 2000-2015, PostgreSQL Global Development Group
*
* src/bin/psql/help.c
*/
#include "postgres_fe.h"
#ifndef WIN32
#include <sys/types.h> /* (ditto) */
#include <unistd.h> /* for geteuid() */
#else
#include <win32.h>
#endif
#ifndef WIN32
#include <sys/ioctl.h> /* for ioctl() */
#endif
#ifdef HAVE_TERMIOS_H
#include <termios.h>
#endif
#include "common.h"
#include "common/username.h"
#include "help.h"
#include "input.h"
#include "settings.h"
#include "sql_help.h"
/*
* PLEASE:
* If you change something in this file, also make the same changes
* in the DocBook documentation, file ref/psql-ref.sgml. If you don't
* know how to do it, please find someone who can help you.
*/
/*
* usage
*
* print out command line arguments
*/
#define ON(var) (var ? _("on") : _("off"))
void
usage(unsigned short int pager)
{
const char *env;
const char *user;
char *errstr;
FILE *output;
/* Find default user, in case we need it. */
user = getenv("PGUSER");
if (!user)
{
user = get_user_name(&errstr);
if (!user)
{
psql_error("%s\n", errstr);
exit(EXIT_FAILURE);
}
}
/*
* Keep this line count in sync with the number of lines printed below!
* Use "psql --help=options | wc" to count correctly.
*/
output = PageOutput(60, pager ? &(pset.popt.topt) : NULL);
fprintf(output, _("psql is the PostgreSQL interactive terminal.\n\n"));
fprintf(output, _("Usage:\n"));
fprintf(output, _(" psql [OPTION]... [DBNAME [USERNAME]]\n\n"));
fprintf(output, _("General options:\n"));
/* Display default database */
env = getenv("PGDATABASE");
if (!env)
env = user;
fprintf(output, _(" -c, --command=COMMAND run only single command (SQL or internal) and exit\n"));
fprintf(output, _(" -d, --dbname=DBNAME database name to connect to (default: \"%s\")\n"), env);
fprintf(output, _(" -f, --file=FILENAME execute commands from file, then exit\n"));
fprintf(output, _(" -l, --list list available databases, then exit\n"));
fprintf(output, _(" -v, --set=, --variable=NAME=VALUE\n"
" set psql variable NAME to VALUE\n"
" (e.g., -v ON_ERROR_STOP=1)\n"));
fprintf(output, _(" -V, --version output version information, then exit\n"));
fprintf(output, _(" -X, --no-psqlrc do not read startup file (~/.psqlrc)\n"));
fprintf(output, _(" -1 (\"one\"), --single-transaction\n"
" execute as a single transaction (if non-interactive)\n"));
fprintf(output, _(" -?, --help[=options] show this help, then exit\n"));
fprintf(output, _(" --help=commands list backslash commands, then exit\n"));
fprintf(output, _(" --help=variables list special variables, then exit\n"));
fprintf(output, _("\nInput and output options:\n"));
fprintf(output, _(" -a, --echo-all echo all input from script\n"));
fprintf(output, _(" -b, --echo-errors echo failed commands\n"));
fprintf(output, _(" -e, --echo-queries echo commands sent to server\n"));
fprintf(output, _(" -E, --echo-hidden display queries that internal commands generate\n"));
fprintf(output, _(" -L, --log-file=FILENAME send session log to file\n"));
fprintf(output, _(" -n, --no-readline disable enhanced command line editing (readline)\n"));
fprintf(output, _(" -o, --output=FILENAME send query results to file (or |pipe)\n"));
fprintf(output, _(" -q, --quiet run quietly (no messages, only query output)\n"));
fprintf(output, _(" -s, --single-step single-step mode (confirm each query)\n"));
fprintf(output, _(" -S, --single-line single-line mode (end of line terminates SQL command)\n"));
fprintf(output, _("\nOutput format options:\n"));
fprintf(output, _(" -A, --no-align unaligned table output mode\n"));
fprintf(output, _(" -F, --field-separator=STRING\n"
" field separator for unaligned output (default: \"%s\")\n"),
DEFAULT_FIELD_SEP);
fprintf(output, _(" -H, --html HTML table output mode\n"));
fprintf(output, _(" -P, --pset=VAR[=ARG] set printing option VAR to ARG (see \\pset command)\n"));
fprintf(output, _(" -R, --record-separator=STRING\n"
" record separator for unaligned output (default: newline)\n"));
fprintf(output, _(" -t, --tuples-only print rows only\n"));
fprintf(output, _(" -T, --table-attr=TEXT set HTML table tag attributes (e.g., width, border)\n"));
fprintf(output, _(" -x, --expanded turn on expanded table output\n"));
fprintf(output, _(" -z, --field-separator-zero\n"
" set field separator for unaligned output to zero byte\n"));
fprintf(output, _(" -0, --record-separator-zero\n"
" set record separator for unaligned output to zero byte\n"));
fprintf(output, _("\nConnection options:\n"));
/* Display default host */
env = getenv("PGHOST");
fprintf(output, _(" -h, --host=HOSTNAME database server host or socket directory (default: \"%s\")\n"),
env ? env : _("local socket"));
/* Display default port */
env = getenv("PGPORT");
fprintf(output, _(" -p, --port=PORT database server port (default: \"%s\")\n"),
env ? env : DEF_PGPORT_STR);
/* Display default user */
env = getenv("PGUSER");
if (!env)
env = user;
fprintf(output, _(" -U, --username=USERNAME database user name (default: \"%s\")\n"), env);
fprintf(output, _(" -w, --no-password never prompt for password\n"));
fprintf(output, _(" -W, --password force password prompt (should happen automatically)\n"));
fprintf(output, _("\nFor more information, type \"\\?\" (for internal commands) or \"\\help\" (for SQL\n"
"commands) from within psql, or consult the psql section in the PostgreSQL\n"
"documentation.\n\n"));
fprintf(output, _("Report bugs to <pgsql-bugs@postgresql.org>.\n"));
ClosePager(output);
}
/*
* slashUsage
*
* print out help for the backslash commands
*/
void
slashUsage(unsigned short int pager)
{
FILE *output;
char *currdb;
currdb = PQdb(pset.db);
/*
* Keep this line count in sync with the number of lines printed below!
* Use "psql --help=commands | wc" to count correctly. It's okay to count
* the USE_READLINE line even in builds without that.
*/
output = PageOutput(109, pager ? &(pset.popt.topt) : NULL);
fprintf(output, _("General\n"));
fprintf(output, _(" \\copyright show PostgreSQL usage and distribution terms\n"));
fprintf(output, _(" \\g [FILE] or ; execute query (and send results to file or |pipe)\n"));
fprintf(output, _(" \\gset [PREFIX] execute query and store results in psql variables\n"));
fprintf(output, _(" \\q quit psql\n"));
fprintf(output, _(" \\watch [SEC] execute query every SEC seconds\n"));
fprintf(output, "\n");
fprintf(output, _("Help\n"));
fprintf(output, _(" \\? [commands] description of all psql backslash commands\n"));
fprintf(output, _(" \\? options description of all psql commandline options\n"));
fprintf(output, _(" \\? variables description of all psql configuration variables\n"));
fprintf(output, _(" \\h [NAME] help on syntax of SQL commands, * for all commands\n"));
fprintf(output, "\n");
fprintf(output, _("Query Buffer\n"));
fprintf(output, _(" \\e [FILE] [LINE] edit the query buffer (or file) with external editor\n"));
fprintf(output, _(" \\ef [FUNCNAME [LINE]] edit function definition with external editor\n"));
fprintf(output, _(" \\ev [VIEWNAME [LINE]] edit view definition with external editor\n"));
fprintf(output, _(" \\p show the contents of the query buffer\n"));
fprintf(output, _(" \\r reset (clear) the query buffer\n"));
#ifdef USE_READLINE
fprintf(output, _(" \\s [FILE] display history or save it to file\n"));
#endif
fprintf(output, _(" \\w FILE write query buffer to file\n"));
fprintf(output, "\n");
fprintf(output, _("Input/Output\n"));
fprintf(output, _(" \\copy ... perform SQL COPY with data stream to the client host\n"));
fprintf(output, _(" \\echo [STRING] write string to standard output\n"));
fprintf(output, _(" \\i FILE execute commands from file\n"));
fprintf(output, _(" \\ir FILE as \\i, but relative to location of current script\n"));
fprintf(output, _(" \\o [FILE] send all query results to file or |pipe\n"));
fprintf(output, _(" \\qecho [STRING] write string to query output stream (see \\o)\n"));
fprintf(output, "\n");
fprintf(output, _("Informational\n"));
fprintf(output, _(" (options: S = show system objects, + = additional detail)\n"));
fprintf(output, _(" \\d[S+] list tables, views, and sequences\n"));
fprintf(output, _(" \\d[S+] NAME describe table, view, sequence, or index\n"));
fprintf(output, _(" \\da[S] [PATTERN] list aggregates\n"));
fprintf(output, _(" \\db[+] [PATTERN] list tablespaces\n"));
fprintf(output, _(" \\dc[S+] [PATTERN] list conversions\n"));
fprintf(output, _(" \\dC[+] [PATTERN] list casts\n"));
fprintf(output, _(" \\dd[S] [PATTERN] show object descriptions not displayed elsewhere\n"));
fprintf(output, _(" \\ddp [PATTERN] list default privileges\n"));
fprintf(output, _(" \\dD[S+] [PATTERN] list domains\n"));
fprintf(output, _(" \\det[+] [PATTERN] list foreign tables\n"));
fprintf(output, _(" \\des[+] [PATTERN] list foreign servers\n"));
fprintf(output, _(" \\deu[+] [PATTERN] list user mappings\n"));
fprintf(output, _(" \\dew[+] [PATTERN] list foreign-data wrappers\n"));
fprintf(output, _(" \\df[antw][S+] [PATRN] list [only agg/normal/trigger/window] functions\n"));
fprintf(output, _(" \\dF[+] [PATTERN] list text search configurations\n"));
fprintf(output, _(" \\dFd[+] [PATTERN] list text search dictionaries\n"));
fprintf(output, _(" \\dFp[+] [PATTERN] list text search parsers\n"));
fprintf(output, _(" \\dFt[+] [PATTERN] list text search templates\n"));
fprintf(output, _(" \\dg[+] [PATTERN] list roles\n"));
fprintf(output, _(" \\di[S+] [PATTERN] list indexes\n"));
fprintf(output, _(" \\dl list large objects, same as \\lo_list\n"));
fprintf(output, _(" \\dL[S+] [PATTERN] list procedural languages\n"));
fprintf(output, _(" \\dm[S+] [PATTERN] list materialized views\n"));
fprintf(output, _(" \\dn[S+] [PATTERN] list schemas\n"));
fprintf(output, _(" \\do[S] [PATTERN] list operators\n"));
fprintf(output, _(" \\dO[S+] [PATTERN] list collations\n"));
fprintf(output, _(" \\dp [PATTERN] list table, view, and sequence access privileges\n"));
fprintf(output, _(" \\drds [PATRN1 [PATRN2]] list per-database role settings\n"));
fprintf(output, _(" \\ds[S+] [PATTERN] list sequences\n"));
fprintf(output, _(" \\dt[S+] [PATTERN] list tables\n"));
fprintf(output, _(" \\dT[S+] [PATTERN] list data types\n"));
fprintf(output, _(" \\du[+] [PATTERN] list roles\n"));
fprintf(output, _(" \\dv[S+] [PATTERN] list views\n"));
fprintf(output, _(" \\dE[S+] [PATTERN] list foreign tables\n"));
fprintf(output, _(" \\dx[+] [PATTERN] list extensions\n"));
fprintf(output, _(" \\dy [PATTERN] list event triggers\n"));
fprintf(output, _(" \\l[+] [PATTERN] list databases\n"));
fprintf(output, _(" \\sf[+] FUNCNAME show a function's definition\n"));
fprintf(output, _(" \\sv[+] VIEWNAME show a view's definition\n"));
fprintf(output, _(" \\z [PATTERN] same as \\dp\n"));
fprintf(output, "\n");
fprintf(output, _("Formatting\n"));
fprintf(output, _(" \\a toggle between unaligned and aligned output mode\n"));
fprintf(output, _(" \\C [STRING] set table title, or unset if none\n"));
fprintf(output, _(" \\f [STRING] show or set field separator for unaligned query output\n"));
fprintf(output, _(" \\H toggle HTML output mode (currently %s)\n"),
ON(pset.popt.topt.format == PRINT_HTML));
fprintf(output, _(" \\pset [NAME [VALUE]] set table output option\n"
" (NAME := {format|border|expanded|fieldsep|fieldsep_zero|footer|null|\n"
" numericlocale|recordsep|recordsep_zero|tuples_only|title|tableattr|pager|\n"
" unicode_border_linestyle|unicode_column_linestyle|unicode_header_linestyle})\n"));
fprintf(output, _(" \\t [on|off] show only rows (currently %s)\n"),
ON(pset.popt.topt.tuples_only));
fprintf(output, _(" \\T [STRING] set HTML <table> tag attributes, or unset if none\n"));
fprintf(output, _(" \\x [on|off|auto] toggle expanded output (currently %s)\n"),
pset.popt.topt.expanded == 2 ? "auto" : ON(pset.popt.topt.expanded));
fprintf(output, "\n");
fprintf(output, _("Connection\n"));
if (currdb)
fprintf(output, _(" \\c[onnect] {[DBNAME|- USER|- HOST|- PORT|-] | conninfo}\n"
" connect to new database (currently \"%s\")\n"),
currdb);
else
fprintf(output, _(" \\c[onnect] {[DBNAME|- USER|- HOST|- PORT|-] | conninfo}\n"
" connect to new database (currently no connection)\n"));
fprintf(output, _(" \\encoding [ENCODING] show or set client encoding\n"));
fprintf(output, _(" \\password [USERNAME] securely change the password for a user\n"));
fprintf(output, _(" \\conninfo display information about current connection\n"));
fprintf(output, "\n");
fprintf(output, _("Operating System\n"));
fprintf(output, _(" \\cd [DIR] change the current working directory\n"));
fprintf(output, _(" \\setenv NAME [VALUE] set or unset environment variable\n"));
fprintf(output, _(" \\timing [on|off] toggle timing of commands (currently %s)\n"),
ON(pset.timing));
fprintf(output, _(" \\! [COMMAND] execute command in shell or start interactive shell\n"));
fprintf(output, "\n");
fprintf(output, _("Variables\n"));
fprintf(output, _(" \\prompt [TEXT] NAME prompt user to set internal variable\n"));
fprintf(output, _(" \\set [NAME [VALUE]] set internal variable, or list all if no parameters\n"));
fprintf(output, _(" \\unset NAME unset (delete) internal variable\n"));
fprintf(output, "\n");
fprintf(output, _("Large Objects\n"));
fprintf(output, _(" \\lo_export LOBOID FILE\n"
" \\lo_import FILE [COMMENT]\n"
" \\lo_list\n"
" \\lo_unlink LOBOID large object operations\n"));
ClosePager(output);
}
/*
* helpVariables
*
* show list of available variables (options) from command line
*/
void
helpVariables(unsigned short int pager)
{
FILE *output;
/*
* Keep this line count in sync with the number of lines printed below!
* Use "psql --help=variables | wc" to count correctly; but notice that
* Windows builds currently print one more line than non-Windows builds.
* Using the larger number is fine.
*/
output = PageOutput(87, pager ? &(pset.popt.topt) : NULL);
fprintf(output, _("List of specially treated variables.\n"));
fprintf(output, _("psql variables:\n"));
fprintf(output, _("Usage:\n"));
fprintf(output, _(" psql --set=NAME=VALUE\n or \\set NAME VALUE in interactive mode\n\n"));
fprintf(output, _(" AUTOCOMMIT if set, successful SQL commands are automatically committed\n"));
fprintf(output, _(" COMP_KEYWORD_CASE determine the case used to complete SQL keywords\n"
" [lower, upper, preserve-lower, preserve-upper]\n"));
fprintf(output, _(" DBNAME the currently connected database name\n"));
fprintf(output, _(" ECHO control what input is written to standard output\n"
" [all, errors, none, queries]\n"));
fprintf(output, _(" ECHO_HIDDEN display internal queries executed by backslash commands when it is set\n"
" or with [noexec] just show without execution\n"));
fprintf(output, _(" ENCODING current client character set encoding\n"));
fprintf(output, _(" FETCH_COUNT the number of result rows to fetch and display at a time\n"
" (default: 0=unlimited)\n"));
fprintf(output, _(" HISTCONTROL control history list [ignorespace, ignoredups, ignoreboth]\n"));
fprintf(output, _(" HISTFILE file name used to store the history list\n"));
fprintf(output, _(" HISTSIZE the number of commands to store in the command history\n"));
fprintf(output, _(" HOST the currently connected database server\n"));
fprintf(output, _(" IGNOREEOF if unset, sending an EOF to interactive session terminates application\n"));
fprintf(output, _(" LASTOID the value of last affected OID\n"));
fprintf(output, _(" ON_ERROR_ROLLBACK if set, an error doesn't stop a transaction (uses implicit SAVEPOINTs)\n"));
fprintf(output, _(" ON_ERROR_STOP stop batch execution after error\n"));
fprintf(output, _(" PORT server port of the current connection\n"));
fprintf(output, _(" PROMPT1 specify the standard psql prompt\n"));
fprintf(output, _(" PROMPT2 specify the prompt used when a statement continues from a previous line\n"));
fprintf(output, _(" PROMPT3 specify the prompt used during COPY ... FROM STDIN\n"));
fprintf(output, _(" QUIET run quietly (same as -q option)\n"));
fprintf(output, _(" SHOW_CONTEXT control display of message context fields [never, errors, always]\n"));
fprintf(output, _(" SINGLELINE end of line terminates SQL command mode (same as -S option)\n"));
fprintf(output, _(" SINGLESTEP single-step mode (same as -s option)\n"));
fprintf(output, _(" USER the currently connected database user\n"));
fprintf(output, _(" VERBOSITY control verbosity of error reports [default, verbose, terse]\n"));
fprintf(output, _("\nDisplay influencing variables:\n"));
fprintf(output, _("Usage:\n"));
fprintf(output, _(" psql --pset=NAME[=VALUE]\n or \\pset NAME [VALUE] in interactive mode\n\n"));
fprintf(output, _(" border border style (number)\n"));
fprintf(output, _(" columns set the target width for the wrapped format\n"));
fprintf(output, _(" expanded (or x) toggle expanded output\n"));
fprintf(output, _(" fieldsep field separator for unaligned output (default '|')\n"));
fprintf(output, _(" fieldsep_zero set field separator in unaligned mode to zero\n"));
fprintf(output, _(" format set output format [unaligned, aligned, wrapped, html, asciidoc, ...]\n"));
fprintf(output, _(" footer enable or disable display of the table footer [on, off]\n"));
fprintf(output, _(" linestyle set the border line drawing style [ascii, old-ascii, unicode]\n"));
fprintf(output, _(" null set the string to be printed in place of a null value\n"));
fprintf(output, _(" numericlocale enable or disable display of a locale-specific character to separate\n"
" groups of digits [on, off]\n"));
fprintf(output, _(" pager control when an external pager is used [yes, no, always]\n"));
fprintf(output, _(" recordsep specify the record (line) separator to use in unaligned output format\n"));
fprintf(output, _(" recordsep_zero set the record separator to use in unaligned output format to a zero byte.\n"));
fprintf(output, _(" tableattr (or T) specify attributes for table tag in html format or proportional\n"
" column width of left aligned data type in latex format\n"));
fprintf(output, _(" title set the table title for any subsequently printed tables\n"));
fprintf(output, _(" tuples_only if set, only actual table data is shown\n"));
fprintf(output, _(" unicode_border_linestyle\n"));
fprintf(output, _(" unicode_column_linestyle\n"));
fprintf(output, _(" unicode_header_linestyle\n"
" set the style of unicode line drawing [single, double]\n"));
fprintf(output, _("\nEnvironment variables:\n"));
fprintf(output, _("Usage:\n"));
#ifndef WIN32
fprintf(output, _(" NAME=VALUE [NAME=VALUE] psql ...\n or \\setenv NAME [VALUE] in interactive mode\n\n"));
#else
fprintf(output, _(" set NAME=VALUE\n psql ...\n or \\setenv NAME VALUE in interactive mode\n\n"));
#endif
fprintf(output, _(" COLUMNS number of columns for wrapped format\n"));
fprintf(output, _(" PAGER name of external pager program\n"));
fprintf(output, _(" PGAPPNAME same as the application_name connection parameter\n"));
fprintf(output, _(" PGDATABASE same as the dbname connection parameter\n"));
fprintf(output, _(" PGHOST same as the host connection parameter\n"));
fprintf(output, _(" PGPORT same as the port connection parameter\n"));
fprintf(output, _(" PGUSER same as the user connection parameter\n"));
fprintf(output, _(" PGPASSWORD connection password (not recommended)\n"));
fprintf(output, _(" PGPASSFILE password file name\n"));
fprintf(output, _(" PSQL_EDITOR, EDITOR, VISUAL\n"
" editor used by the \\e, \\ef, and \\ev commands\n"));
fprintf(output, _(" PSQL_EDITOR_LINENUMBER_ARG\n"
" how to specify a line number when invoking the editor\n"));
fprintf(output, _(" PSQL_HISTORY alternative location for the command history file\n"));
fprintf(output, _(" PSQLRC alternative location for the user's .psqlrc file\n"));
fprintf(output, _(" SHELL shell used by the \\! command\n"));
fprintf(output, _(" TMPDIR directory for temporary files\n"));
ClosePager(output);
}
/*
* helpSQL -- help with SQL commands
*
* Note: we assume caller removed any trailing spaces in "topic".
*/
void
helpSQL(const char *topic, unsigned short int pager)
{
#define VALUE_OR_NULL(a) ((a) ? (a) : "")
if (!topic || strlen(topic) == 0)
{
/* Print all the available command names */
int screen_width;
int ncolumns;
int nrows;
FILE *output;
int i;
int j;
#ifdef TIOCGWINSZ
struct winsize screen_size;
if (ioctl(fileno(stdout), TIOCGWINSZ, &screen_size) == -1)
screen_width = 80; /* ioctl failed, assume 80 */
else
screen_width = screen_size.ws_col;
#else
screen_width = 80; /* default assumption */
#endif
ncolumns = (screen_width - 3) / (QL_MAX_CMD_LEN + 1);
ncolumns = Max(ncolumns, 1);
nrows = (QL_HELP_COUNT + (ncolumns - 1)) / ncolumns;
output = PageOutput(nrows + 1, pager ? &(pset.popt.topt) : NULL);
fputs(_("Available help:\n"), output);
for (i = 0; i < nrows; i++)
{
fprintf(output, " ");
for (j = 0; j < ncolumns - 1; j++)
fprintf(output, "%-*s",
QL_MAX_CMD_LEN + 1,
VALUE_OR_NULL(QL_HELP[i + j * nrows].cmd));
if (i + j * nrows < QL_HELP_COUNT)
fprintf(output, "%s",
VALUE_OR_NULL(QL_HELP[i + j * nrows].cmd));
fputc('\n', output);
}
ClosePager(output);
}
else
{
int i,
j,
x = 0;
bool help_found = false;
FILE *output = NULL;
size_t len,
wordlen;
int nl_count = 0;
/*
* We first try exact match, then first + second words, then first
* word only.
*/
len = strlen(topic);
for (x = 1; x <= 3; x++)
{
if (x > 1) /* Nothing on first pass - try the opening
* word(s) */
{
wordlen = j = 1;
while (topic[j] != ' ' && j++ < len)
wordlen++;
if (x == 2)
{
j++;
while (topic[j] != ' ' && j++ <= len)
wordlen++;
}
if (wordlen >= len) /* Don't try again if the same word */
{
if (!output)
output = PageOutput(nl_count, pager ? &(pset.popt.topt) : NULL);
break;
}
len = wordlen;
}
/* Count newlines for pager */
for (i = 0; QL_HELP[i].cmd; i++)
{
if (pg_strncasecmp(topic, QL_HELP[i].cmd, len) == 0 ||
strcmp(topic, "*") == 0)
{
nl_count += 5 + QL_HELP[i].nl_count;
/* If we have an exact match, exit. Fixes \h SELECT */
if (pg_strcasecmp(topic, QL_HELP[i].cmd) == 0)
break;
}
}
if (!output)
output = PageOutput(nl_count, pager ? &(pset.popt.topt) : NULL);
for (i = 0; QL_HELP[i].cmd; i++)
{
if (pg_strncasecmp(topic, QL_HELP[i].cmd, len) == 0 ||
strcmp(topic, "*") == 0)
{
PQExpBufferData buffer;
initPQExpBuffer(&buffer);
QL_HELP[i].syntaxfunc(&buffer);
help_found = true;
fprintf(output, _("Command: %s\n"
"Description: %s\n"
"Syntax:\n%s\n\n"),
QL_HELP[i].cmd,
_(QL_HELP[i].help),
buffer.data);
/* If we have an exact match, exit. Fixes \h SELECT */
if (pg_strcasecmp(topic, QL_HELP[i].cmd) == 0)
break;
}
}
if (help_found) /* Don't keep trying if we got a match */
break;
}
if (!help_found)
fprintf(output, _("No help available for \"%s\".\nTry \\h with no arguments to see available help.\n"), topic);
ClosePager(output);
}
}
void
print_copyright(void)
{
puts(
"PostgreSQL Database Management System\n"
"(formerly known as Postgres, then as Postgres95)\n\n"
"Portions Copyright (c) 1996-2015, PostgreSQL Global Development Group\n\n"
"Portions Copyright (c) 1994, The Regents of the University of California\n\n"
"Permission to use, copy, modify, and distribute this software and its\n"
"documentation for any purpose, without fee, and without a written agreement\n"
"is hereby granted, provided that the above copyright notice and this\n"
"paragraph and the following two paragraphs appear in all copies.\n\n"
"IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR\n"
"DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING\n"
"LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS\n"
"DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE\n"
"POSSIBILITY OF SUCH DAMAGE.\n\n"
"THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,\n"
"INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY\n"
"AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS\n"
"ON AN \"AS IS\" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO\n"
"PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.\n"
);
}
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