1384 lines
35 KiB
C
1384 lines
35 KiB
C
/*-------------------------------------------------------------------------
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*
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* psql.c--
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* an interactive front-end to postgres95
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*
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* Copyright (c) 1996, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.5 1996/07/20 08:44:45 scrappy Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include "libpq-fe.h"
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#include "stringutils.h"
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#include "psqlHelp.h"
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#ifdef NOREADLINE
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extern char *readline(char *); /* in rlstubs.c */
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#else
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/* from the GNU readline library */
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#ifdef OLD_READLINE
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#include "readline.h"
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#include "history.h"
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#else
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#include <readline/readline.h>
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#include <readline/history.h>
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#endif
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#endif
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#define MAX_QUERY_BUFFER 20000
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#define COPYBUFSIZ 8192
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#define DEFAULT_FIELD_SEP "|"
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#define DEFAULT_EDITOR "vi"
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#define DEFAULT_SHELL "/bin/sh"
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typedef struct _psqlSettings {
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PGconn *db; /* connection to backend */
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FILE *queryFout; /* where to send the query results */
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PQprintOpt opt; /* options to be passed to PQprint */
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char *prompt; /* prompt to display */
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char *gfname; /* one-shot file output argument for \g */
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bool notty; /* input or output is not a tty */
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bool pipe; /* queryFout is from a popen() */
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bool echoQuery; /* echo the query before sending it */
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bool quiet; /* run quietly, no messages, no promt */
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bool singleStep; /* prompt before for each query */
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bool singleLineMode; /* query terminated by newline */
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bool useReadline; /* use libreadline routines */
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} PsqlSettings;
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/* declarations for functions in this file */
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static void usage(char* progname);
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static void slashUsage();
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static void handleCopyOut(PGresult *res, bool quiet);
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static void handleCopyIn(PGresult *res, bool quiet);
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static int tableList(PsqlSettings *ps, bool deep_tablelist);
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static int tableDesc(PsqlSettings *ps, char *table);
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char* gets_noreadline(char* prompt, FILE* source);
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char* gets_readline(char* prompt, FILE* source);
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char* gets_fromFile(char* prompt, FILE* source);
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int listAllDbs(PsqlSettings *settings);
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int SendQuery(PsqlSettings *settings, char* query);
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int HandleSlashCmds(PsqlSettings *settings,
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char *line,
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char *query);
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int MainLoop(PsqlSettings *settings, FILE *source);
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/* probably should move this into libpq */
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void PQprint(FILE *fp,
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PGresult *res,
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PQprintOpt *po
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);
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FILE* setFout(PsqlSettings *ps, char *fname);
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/*
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* usage
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* print out usage for command line arguments
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*/
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static void
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usage(char* progname)
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{
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fprintf(stderr,"Usage: %s [options] [dbname]\n",progname);
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fprintf(stderr,"\t -a authsvc set authentication service\n");
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fprintf(stderr,"\t -A turn off alignment when printing out attributes\n");
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fprintf(stderr,"\t -c query run single query (slash commands too)\n");
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fprintf(stderr,"\t -d dbName specify database name\n");
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fprintf(stderr,"\t -e echo the query sent to the backend\n");
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fprintf(stderr,"\t -f filename use file as a source of queries\n");
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fprintf(stderr,"\t -F sep set the field separator (default is " ")\n");
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fprintf(stderr,"\t -h host set database server host\n");
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fprintf(stderr,"\t -H turn on html3.0 table output\n");
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fprintf(stderr,"\t -l list available databases\n");
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fprintf(stderr,"\t -n don't use readline library\n");
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fprintf(stderr,"\t -o filename send output to filename or (|pipe)\n");
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fprintf(stderr,"\t -p port set port number\n");
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fprintf(stderr,"\t -q run quietly (no messages, no prompts)\n");
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fprintf(stderr,"\t -s single step mode (prompts for each query)\n");
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fprintf(stderr,"\t -S single line mode (i.e. query terminated by newline)\n");
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fprintf(stderr,"\t -t turn off printing of attribute headers\n");
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fprintf(stderr,"\t -T html set html3.0 table command options (cf. -H)\n");
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fprintf(stderr,"\t -x turn on expanded output (field names on left)");
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exit(1);
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}
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/*
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* slashUsage
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* print out usage for the backslash commands
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*/
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char *on(bool f)
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{
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return f? "on": "off";
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}
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static void
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slashUsage(PsqlSettings *ps)
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{
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fprintf(stderr,"\t \\a -- toggle field-alignment (currenty %s)\n", on(ps->opt.align));
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fprintf(stderr,"\t \\c [<captn>] -- set html3 caption (currently '%s')\n", ps->opt.caption? ps->opt.caption: "");
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fprintf(stderr,"\t \\C <dbname> -- connect to new database (currently '%s')\n", PQdb(ps->db));
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fprintf(stderr,"\t \\d [<table>] -- list tables in database or columns in <table>\n");
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fprintf(stderr,"\t \\d * -- list tables in database and columns in all tables\n");
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fprintf(stderr,"\t \\e [<fname>] -- edit the current query buffer or <fname>\n");
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fprintf(stderr,"\t \\f [<sep>] -- change field separater (currently '%s')\n", ps->opt.fieldSep);
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fprintf(stderr,"\t \\g [<fname>] -- send query to backend [and place results in <fname>]\n");
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fprintf(stderr,"\t \\g |<cmd> -- send query to backend and pipe results into <cmd>\n");
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fprintf(stderr,"\t \\h [<cmd>] -- help on syntax of sql commands\n");
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fprintf(stderr,"\t \\h * -- complete description of all sql commands\n");
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fprintf(stderr,"\t \\H -- toggle html3 output (currently %s)\n", on(ps->opt.html3));
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fprintf(stderr,"\t \\i <fname> -- read and execute queries from filename\n");
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fprintf(stderr,"\t \\l -- list all databases\n");
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fprintf(stderr,"\t \\o [<fname>] -- send query results to <fname> or stdout\n");
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fprintf(stderr,"\t \\o |<cmd> -- pipe query results through <cmd>\n");
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fprintf(stderr,"\t \\p -- print the current query buffer\n");
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fprintf(stderr,"\t \\q -- quit\n");
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fprintf(stderr,"\t \\r [<fname>] -- edit <fname> then send contents to backend\n");
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fprintf(stderr,"\t \\s [<fname>] -- print history or save it in <fname>\n");
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fprintf(stderr,"\t \\S -- toggle standard sql type-setting (currently %s)\n", on(ps->opt.standard));
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fprintf(stderr,"\t \\t -- toggle table output header (currently %s)\n", on(ps->opt.header));
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fprintf(stderr,"\t \\T [<html>] -- set html3.0 <table ...> options (currently '%s')\n", ps->opt.tableOpt? ps->opt.tableOpt: "");
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fprintf(stderr,"\t \\x -- toggle expanded output (currently %s)\n", on(ps->opt.expanded));
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fprintf(stderr,"\t \\z -- zorch current query buffer (i.e clear it)\n");
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fprintf(stderr,"\t \\! [<cmd>] -- shell escape or command\n");
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fprintf(stderr,"\t \\? -- help\n");
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}
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PGresult *
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PSQLexec(PsqlSettings *ps, char *query)
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{
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PGresult *res = PQexec(ps->db, query);
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if (!res)
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fputs(PQerrorMessage(ps->db), stderr);
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else
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{
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if (PQresultStatus(res)==PGRES_COMMAND_OK ||
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PQresultStatus(res)==PGRES_TUPLES_OK)
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return res;
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if (!ps->quiet)
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fputs(PQerrorMessage(ps->db), stderr);
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PQclear(res);
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}
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return NULL;
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}
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/*
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* listAllDbs
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*
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* list all the databases in the system
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* returns 0 if all went well
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*
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*
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*/
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int
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listAllDbs(PsqlSettings *ps)
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{
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PGresult *results;
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char* query = "select * from pg_database;";
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if (!(results=PSQLexec(ps, query)))
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return 1;
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else
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{
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PQprint(ps->queryFout,
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results,
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&ps->opt);
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PQclear(results);
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return 0;
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}
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}
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/*
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*
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* List The Database Tables
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* returns 0 if all went well
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*
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*/
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int
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tableList (PsqlSettings *ps, bool deep_tablelist)
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{
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char listbuf[256];
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int nColumns;
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int i;
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char* rk;
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char* rr;
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PGresult* res;
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listbuf[0] = '\0';
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strcat(listbuf,"SELECT usename, relname, relkind, relhasrules");
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strcat(listbuf," FROM pg_class, pg_user ");
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strcat(listbuf,"WHERE ( relkind = 'r' OR relkind = 'i') ");
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strcat(listbuf," and relname !~ '^pg_'");
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strcat(listbuf," and relname !~ '^Inv[0-9]+'");
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/* the usesysid = relowner won't work on stock 1.0 dbs, need to
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add in the int4oideq function */
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strcat(listbuf," and usesysid = relowner");
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strcat(listbuf," ORDER BY relname ");
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if (!(res=PSQLexec(ps, listbuf)))
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return -1;
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/* first, print out the attribute names */
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nColumns = PQntuples(res);
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if (nColumns > 0)
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{
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if ( deep_tablelist ) {
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/* describe everything here */
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char **table;
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table = (char**)malloc(nColumns * sizeof(char*));
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if ( table == NULL )
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perror("malloc");
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/* load table table*/
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for (i=0; i < nColumns; i++) {
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table[i] = (char *) malloc(PQgetlength(res,i,1) * sizeof(char) + 1);
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if ( table[i] == NULL )
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perror("malloc");
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strcpy(table[i],PQgetvalue(res,i,1));
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}
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PQclear(res);
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for (i=0; i < nColumns; i++) {
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tableDesc(ps, table[i]);
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}
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free(table);
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}
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else {
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/* Display the information */
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printf ("\nDatabase = %s\n", PQdb(ps->db));
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printf (" +------------------+----------------------------------+----------+\n");
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printf (" | Owner | Relation | Type |\n");
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printf (" +------------------+----------------------------------+----------+\n");
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/* next, print out the instances */
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for (i=0; i < PQntuples(res); i++) {
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printf (" | %-16.16s", PQgetvalue(res,i,0));
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printf (" | %-32.32s | ", PQgetvalue(res,i,1));
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rk = PQgetvalue(res,i,2);
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rr = PQgetvalue(res,i,3);
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if (strcmp(rk, "r") == 0)
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printf ("%-8.8s |", (rr[0] == 't') ? "view?" : "table" );
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else
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printf ("%-8.8s |", "index");
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printf("\n");
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}
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printf (" +------------------+----------------------------------+----------+\n");
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PQclear(res);
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}
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return (0);
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} else {
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fprintf (stderr, "Couldn't find any tables!\n");
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return (-1);
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}
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}
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/*
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* Describe a table
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*
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* Describe the columns in a database table.
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* returns 0 if all went well
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*
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*
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*/
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int
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tableDesc (PsqlSettings *ps, char *table)
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{
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char descbuf[256];
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int nColumns;
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char *rtype;
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int i;
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int rsize;
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PGresult* res;
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/* Build the query */
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descbuf[0] = '\0';
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strcat(descbuf,"SELECT a.attnum, a.attname, t.typname, a.attlen");
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strcat(descbuf," FROM pg_class c, pg_attribute a, pg_type t ");
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strcat(descbuf," WHERE c.relname = '");
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strcat(descbuf,table);
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strcat(descbuf,"'");
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strcat(descbuf," and a.attnum > 0 ");
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strcat(descbuf," and a.attrelid = c.oid ");
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strcat(descbuf," and a.atttypid = t.oid ");
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strcat(descbuf," ORDER BY attnum ");
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if (!(res = PSQLexec(ps, descbuf)))
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return -1;
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/* first, print out the attribute names */
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nColumns = PQntuples(res);
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if (nColumns > 0)
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{
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/*
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** Display the information
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*/
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printf ("\nTable = %s\n", table);
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printf ("+----------------------------------+----------------------------------+--------+\n");
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printf ("| Field | Type | Length |\n");
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printf ("+----------------------------------+----------------------------------+--------+\n");
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/* next, print out the instances */
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for (i=0; i < PQntuples(res); i++) {
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printf ("| %-32.32s | ", PQgetvalue(res,i,1));
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rtype = PQgetvalue(res,i,2);
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rsize = atoi(PQgetvalue(res,i,3));
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if (strcmp(rtype, "text") == 0) {
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printf ("%-32.32s |", rtype);
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printf ("%6s |", "var" );
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}
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else if (strcmp(rtype, "bpchar") == 0) {
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printf ("%-32.32s |", "char");
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printf ("%6i |", rsize > 0 ? rsize - 4 : 0 );
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}
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else if (strcmp(rtype, "varchar") == 0) {
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printf ("%-32.32s |", rtype);
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printf ("%6i |", rsize > 0 ? rsize - 4 : 0 );
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}
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else {
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/* array types start with an underscore */
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if (rtype[0] != '_')
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printf ("%-32.32s |", rtype);
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else {
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char *newname;
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newname = malloc(strlen(rtype) + 2);
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strcpy(newname, rtype+1);
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strcat(newname, "[]");
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printf ("%-32.32s |", newname);
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free(newname);
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}
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if (rsize > 0)
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printf (" %6i |", rsize);
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else
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printf (" %6s |", "var");
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}
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printf("\n");
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}
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printf ("+----------------------------------+----------------------------------+--------+\n");
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PQclear(res);
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return (0);
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} else {
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fprintf (stderr, "Couldn't find table %s!\n", table);
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return (-1);
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}
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}
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typedef char* (*READ_ROUTINE)(char* prompt, FILE* source);
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/* gets_noreadline prompt source
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gets a line of input without calling readline, the source is ignored
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*/
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char*
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gets_noreadline(char* prompt, FILE* source)
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{
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fputs(prompt, stdout);
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fflush(stdout);
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return(gets_fromFile(prompt,stdin));
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}
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/*
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* gets_readline prompt source
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* the routine to get input from GNU readline(), the source is ignored
|
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* the prompt argument is used as the prompting string
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*/
|
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char*
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gets_readline(char* prompt, FILE* source)
|
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{
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return (readline(prompt));
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}
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|
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/*
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* gets_fromFile prompt source
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*
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* the routine to read from a file, the prompt argument is ignored
|
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* the source argument is a FILE*
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*/
|
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char*
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gets_fromFile(char* prompt, FILE* source)
|
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{
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char* line;
|
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int len;
|
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|
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line = malloc(MAX_QUERY_BUFFER+1);
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|
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/* read up to MAX_QUERY_BUFFER characters */
|
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if (fgets(line, MAX_QUERY_BUFFER, source) == NULL)
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return NULL;
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|
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line[MAX_QUERY_BUFFER-1] = '\0';
|
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len = strlen(line);
|
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if (len == MAX_QUERY_BUFFER)
|
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{
|
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fprintf(stderr, "line read exceeds maximum length. Truncating at %d\n", MAX_QUERY_BUFFER);
|
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}
|
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|
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return line;
|
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}
|
|
|
|
/*
|
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* SendQuery: send the query string to the backend
|
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* return 0 if the query executed successfully
|
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* returns 1 otherwise
|
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*/
|
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int
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SendQuery(PsqlSettings *settings, char *query)
|
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{
|
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PGresult* results;
|
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PGnotify* notify;
|
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int status = 0;
|
|
|
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if (settings->singleStep)
|
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fprintf(stdout, "\n*******************************************************************************\n");
|
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|
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if (settings->echoQuery || settings->singleStep) {
|
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fprintf(stderr,"QUERY: %s\n",query);
|
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fflush(stderr);
|
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}
|
|
|
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if (settings->singleStep) {
|
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fprintf(stdout, "\n*******************************************************************************\n");
|
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fflush(stdout);
|
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printf("\npress return to continue ..\n");
|
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gets_fromFile("",stdin);
|
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}
|
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|
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results = PQexec(settings->db, query);
|
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if (results == NULL) {
|
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fprintf(stderr,"%s",PQerrorMessage(settings->db));
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return 1;
|
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}
|
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|
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switch (PQresultStatus(results)) {
|
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case PGRES_TUPLES_OK:
|
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if (settings->gfname)
|
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{
|
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PsqlSettings ps=*settings;
|
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FILE *fp;
|
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ps.queryFout=stdout;
|
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fp=setFout(&ps, settings->gfname);
|
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if (!fp || fp==stdout)
|
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{
|
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status = 1;
|
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break;
|
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}
|
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PQprint(fp,
|
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results,
|
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&(settings->opt));
|
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if (ps.pipe)
|
|
pclose(fp);
|
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else
|
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fclose(fp);
|
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settings->gfname=NULL;
|
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break;
|
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} else
|
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{
|
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PQprint(settings->queryFout,
|
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results,
|
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&(settings->opt));
|
|
fflush(settings->queryFout);
|
|
}
|
|
PQclear(results);
|
|
break;
|
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case PGRES_EMPTY_QUERY:
|
|
/* do nothing */
|
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break;
|
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case PGRES_COMMAND_OK:
|
|
if (!settings->quiet)
|
|
fprintf(stdout,"%s\n", PQcmdStatus(results));
|
|
break;
|
|
case PGRES_COPY_OUT:
|
|
handleCopyOut(results, settings->quiet);
|
|
break;
|
|
case PGRES_COPY_IN:
|
|
handleCopyIn(results, settings->quiet);
|
|
break;
|
|
case PGRES_NONFATAL_ERROR:
|
|
case PGRES_FATAL_ERROR:
|
|
case PGRES_BAD_RESPONSE:
|
|
status = 1;
|
|
fprintf(stderr,"%s",PQerrorMessage(settings->db));
|
|
break;
|
|
}
|
|
|
|
/* check for asynchronous returns */
|
|
notify = PQnotifies(settings->db);
|
|
if (notify) {
|
|
fprintf(stderr,"ASYNC NOTIFY of '%s' from backend pid '%d' received\n",
|
|
notify->relname, notify->be_pid);
|
|
free(notify);
|
|
}
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
void
|
|
editFile(char *fname)
|
|
{
|
|
char *editorName;
|
|
char *sys;
|
|
editorName = getenv("EDITOR");
|
|
if (!editorName)
|
|
editorName = DEFAULT_EDITOR;
|
|
sys=malloc(strlen(editorName)+strlen(fname)+32+1);
|
|
if (!sys)
|
|
{
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
sprintf(sys, "exec '%s' '%s'", editorName, fname);
|
|
system(sys);
|
|
free(sys);
|
|
}
|
|
|
|
bool
|
|
toggle(PsqlSettings *settings, bool *sw, char *msg)
|
|
{
|
|
*sw= !*sw;
|
|
if (!settings->quiet)
|
|
fprintf(stderr, "turned %s %s\n", on(*sw), msg);
|
|
return *sw;
|
|
}
|
|
|
|
char *
|
|
decode(char *s)
|
|
{
|
|
char *p, *d;
|
|
bool esc=0;
|
|
for (d=p=s; *p; p++)
|
|
{
|
|
char c=*p;
|
|
if (esc)
|
|
{
|
|
switch(*p)
|
|
{
|
|
case 'n':
|
|
c='\n';
|
|
break;
|
|
case 'r':
|
|
c='\r';
|
|
break;
|
|
case 't':
|
|
c='\t';
|
|
break;
|
|
case 'f':
|
|
c='\f';
|
|
break;
|
|
}
|
|
esc=0;
|
|
} else
|
|
if (c=='\\')
|
|
{
|
|
esc=1;
|
|
continue;
|
|
}
|
|
*d++=c;
|
|
}
|
|
*d='\0';
|
|
}
|
|
|
|
/*
|
|
HandleSlashCmds:
|
|
|
|
Handles all the different commands that start with \
|
|
db_ptr is a pointer to the TgDb* structure
|
|
line is the current input line
|
|
prompt_ptr is a pointer to the prompt string,
|
|
a pointer is used because the prompt can be used with
|
|
a connection to a new database
|
|
returns a status:
|
|
0 - send currently constructed query to backend (i.e. we got a \g)
|
|
1 - skip processing of this line, continue building up query
|
|
2 - terminate processing of this query entirely
|
|
*/
|
|
int
|
|
HandleSlashCmds(PsqlSettings *settings,
|
|
char* line,
|
|
char *query)
|
|
{
|
|
int status = 1;
|
|
char *optarg = NULL;
|
|
int len;
|
|
|
|
len = strlen(line);
|
|
if (len > 2)
|
|
{
|
|
optarg = leftTrim(line+2);
|
|
decode(optarg);
|
|
}
|
|
switch (line[1])
|
|
{
|
|
case 'a': /* toggles to align fields on output */
|
|
toggle(settings, &settings->opt.align, "field alignment");
|
|
break;
|
|
case 'c': /* define new caption */
|
|
if (settings->opt.caption)
|
|
free(settings->opt.caption);
|
|
if (!optarg)
|
|
settings->opt.caption=NULL;
|
|
else
|
|
if (!(settings->opt.caption=dupstr(optarg)))
|
|
{
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'C': /* \C means connect to new database */
|
|
{
|
|
char *dbname=PQdb(settings->db);
|
|
if (!optarg) {
|
|
fprintf(stderr,"\\c must be followed by a database name\n");
|
|
break;
|
|
}
|
|
{
|
|
PGconn *olddb=settings->db;
|
|
|
|
printf("closing connection to database: %s\n", dbname);
|
|
settings->db = PQsetdb(PQhost(olddb), PQport(olddb), NULL, NULL, optarg);
|
|
printf("connecting to new database: %s\n", optarg);
|
|
if (PQstatus(settings->db) == CONNECTION_BAD) {
|
|
fprintf(stderr,"%s\n", PQerrorMessage(settings->db));
|
|
printf("reconnecting to %s\n", dbname);
|
|
settings->db = PQsetdb(PQhost(olddb), PQport(olddb),
|
|
NULL, NULL, dbname);
|
|
if (PQstatus(settings->db) == CONNECTION_BAD) {
|
|
fprintf(stderr,
|
|
"could not reconnect to %s. exiting\n", dbname);
|
|
exit(2);
|
|
}
|
|
break;
|
|
}
|
|
PQfinish(olddb);
|
|
free(settings->prompt);
|
|
settings->prompt = malloc(strlen(PQdb(settings->db)) + 10);
|
|
sprintf(settings->prompt,"%s=> ", PQdb(settings->db));
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
case 'd': /* \d describe tables or columns in a table */
|
|
if (!optarg) {
|
|
tableList(settings, 0);
|
|
break;
|
|
}
|
|
if (strcmp(optarg, "*") == 0 ) {
|
|
tableList(settings, 0);
|
|
tableList(settings, 1);
|
|
}
|
|
else {
|
|
tableDesc(settings, optarg);
|
|
}
|
|
break;
|
|
case 'e':
|
|
{
|
|
int fd;
|
|
char tmp[64];
|
|
char *fname;
|
|
int cc;
|
|
int ql = strlen(query);
|
|
if (optarg)
|
|
fname=optarg;
|
|
else
|
|
{
|
|
sprintf(tmp, "/tmp/psql.%d.%d", getuid(), getpid());
|
|
fname=tmp;
|
|
unlink(tmp);
|
|
if (ql)
|
|
{
|
|
if ((fd=open(tmp, O_EXCL|O_CREAT|O_WRONLY, 0600))==-1)
|
|
{
|
|
perror(tmp);
|
|
break;
|
|
}
|
|
if (query[ql-1]!='\n')
|
|
strcat(query, "\n");
|
|
if (write(fd, query, ql)!=ql)
|
|
{
|
|
perror(tmp);
|
|
close(fd);
|
|
unlink(tmp);
|
|
break;
|
|
}
|
|
close(fd);
|
|
}
|
|
}
|
|
editFile(fname);
|
|
if ((fd=open(fname, O_RDONLY))==-1)
|
|
{
|
|
perror(fname);
|
|
if (!optarg)
|
|
unlink(fname);
|
|
break;
|
|
}
|
|
if ((cc=read(fd, query, MAX_QUERY_BUFFER))==-1)
|
|
{
|
|
perror(fname);
|
|
close(fd);
|
|
if (!optarg)
|
|
unlink(fname);
|
|
break;
|
|
}
|
|
query[cc]='\0';
|
|
close(fd);
|
|
if (!optarg)
|
|
unlink(fname);
|
|
rightTrim(query);
|
|
if (query[strlen(query)-1]==';')
|
|
return 0;
|
|
break;
|
|
}
|
|
case 'f':
|
|
{
|
|
char *fs=DEFAULT_FIELD_SEP;
|
|
if (optarg)
|
|
fs=optarg;
|
|
if (settings->opt.fieldSep);
|
|
free(settings->opt.fieldSep);
|
|
if (!(settings->opt.fieldSep=dupstr(fs)))
|
|
{
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
if (!settings->quiet)
|
|
fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
|
|
break;
|
|
}
|
|
case 'g': /* \g means send query */
|
|
settings->gfname = optarg;
|
|
status = 0;
|
|
break;
|
|
case 'h':
|
|
{
|
|
char* cmd;
|
|
int i, numCmds;
|
|
int all_help = 0;
|
|
|
|
if (!optarg) {
|
|
printf("type \\h <cmd> where <cmd> is one of the following:\n");
|
|
i = 0;
|
|
while (QL_HELP[i].cmd != NULL)
|
|
{
|
|
printf("\t%s\n", QL_HELP[i].cmd);
|
|
i++;
|
|
}
|
|
printf("type \\h * for a complete description of all commands\n");
|
|
}
|
|
else
|
|
{
|
|
cmd = optarg;
|
|
|
|
numCmds = 0;
|
|
while (QL_HELP[numCmds++].cmd != NULL);
|
|
|
|
numCmds = numCmds - 1;
|
|
|
|
if (strcmp(cmd, "*") == 0 ) {
|
|
all_help=1;
|
|
}
|
|
|
|
for (i=0; i<numCmds;i++) {
|
|
if (strcmp(QL_HELP[i].cmd, cmd) == 0 || all_help) {
|
|
printf("Command: %s\n",QL_HELP[i].cmd);
|
|
printf("Description: %s\n", QL_HELP[i].help);
|
|
printf("Syntax:\n");
|
|
printf("%s\n", QL_HELP[i].syntax);
|
|
if ( all_help ) {
|
|
printf("\n");
|
|
}
|
|
else {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (i == numCmds && ! all_help)
|
|
printf("command not found, try \\h with no arguments to see available help\n");
|
|
}
|
|
break;
|
|
}
|
|
case 'i': /* \i is include file */
|
|
{
|
|
FILE* fd;
|
|
|
|
if (!optarg) {
|
|
fprintf(stderr,"\\i must be followed by a file name\n");
|
|
break;
|
|
}
|
|
|
|
if ((fd = fopen(optarg, "r")) == NULL)
|
|
{
|
|
fprintf(stderr,"file named %s could not be opened\n",optarg);
|
|
break;
|
|
}
|
|
MainLoop(settings, fd);
|
|
fclose(fd);
|
|
break;
|
|
}
|
|
case 'l': /* \l is list database */
|
|
listAllDbs(settings);
|
|
break;
|
|
case 'H':
|
|
if (toggle(settings, &settings->opt.html3, "HTML3.0 tablular output"))
|
|
settings->opt.standard = 0;
|
|
break;
|
|
case 'o':
|
|
setFout(settings, optarg);
|
|
break;
|
|
case 'p':
|
|
if (query) {
|
|
fputs(query, stdout);
|
|
fputc('\n', stdout);
|
|
}
|
|
break;
|
|
case 'q': /* \q is quit */
|
|
status = 2;
|
|
break;
|
|
case 'r':
|
|
{
|
|
FILE* fd;
|
|
static char *lastfile;
|
|
struct stat st, st2;
|
|
if (optarg) {
|
|
if (lastfile) free(lastfile);
|
|
lastfile=malloc(strlen(optarg+1));
|
|
if (!lastfile) {
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
strcpy(lastfile, optarg);
|
|
} else
|
|
if (!lastfile) {
|
|
fprintf(stderr, "\\r must be followed by a file name initially\n");
|
|
break;
|
|
}
|
|
stat(lastfile, &st);
|
|
editFile(lastfile);
|
|
if ((stat(lastfile, &st2) == -1) ||
|
|
((fd = fopen(lastfile, "r")) == NULL)) {
|
|
perror(lastfile);
|
|
break;
|
|
}
|
|
if (st2.st_mtime==st.st_mtime) {
|
|
if (!settings->quiet)
|
|
fprintf(stderr, "warning: %s not modified. query not executed\n",
|
|
lastfile);
|
|
fclose(fd);
|
|
break;
|
|
}
|
|
MainLoop(settings, fd);
|
|
fclose(fd);
|
|
break;
|
|
}
|
|
case 's': /* \s is save history to a file */
|
|
if (!optarg) optarg="/dev/tty";
|
|
if (write_history(optarg) != 0)
|
|
fprintf(stderr,"cannot write history to %s\n",optarg);
|
|
break;
|
|
case 'S': /* standard SQL output */
|
|
if (toggle(settings, &settings->opt.standard,
|
|
"standard SQL separaters and padding")) {
|
|
settings->opt.html3 = settings->opt.expanded = 0;
|
|
settings->opt.align = settings->opt.header = 1;
|
|
free(settings->opt.fieldSep);
|
|
settings->opt.fieldSep=dupstr("|");
|
|
if (!settings->quiet)
|
|
fprintf(stderr, "field separater changed to '%s'\n",
|
|
settings->opt.fieldSep);
|
|
} else {
|
|
free(settings->opt.fieldSep);
|
|
settings->opt.fieldSep=dupstr(DEFAULT_FIELD_SEP);
|
|
if (!settings->quiet)
|
|
fprintf(stderr, "field separater changed to '%s'\n",
|
|
settings->opt.fieldSep);
|
|
}
|
|
break;
|
|
case 't': /* toggle headers */
|
|
toggle(settings, &settings->opt.header, "output headers");
|
|
break;
|
|
case 'T': /* define html <table ...> option */
|
|
if (settings->opt.tableOpt) free(settings->opt.tableOpt);
|
|
if (!optarg) settings->opt.tableOpt=NULL;
|
|
else
|
|
if (!(settings->opt.tableOpt=dupstr(optarg))) {
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
break;
|
|
case 'x':
|
|
toggle(settings, &settings->opt.expanded,
|
|
"expanded table representation");
|
|
break;
|
|
case 'z': /* zorch buffer */
|
|
query[0]='\0';
|
|
if (!settings->quiet) fprintf(stderr, "zorched current query buffer\n");
|
|
break;
|
|
case '!':
|
|
if (!optarg) {
|
|
char *sys;
|
|
char *shellName;
|
|
shellName = getenv("SHELL");
|
|
if (shellName == NULL) shellName = DEFAULT_SHELL;
|
|
sys = malloc(strlen(shellName)+16);
|
|
if (!sys) {
|
|
perror("malloc");
|
|
exit(1);
|
|
}
|
|
sprintf(sys,"exec %s", shellName);
|
|
system(sys);
|
|
free(sys);
|
|
} else system(optarg);
|
|
break;
|
|
default:
|
|
case '?': /* \? is help */
|
|
slashUsage(settings);
|
|
break;
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
MainLoop: main processing loop for reading lines of input
|
|
and sending them to the backend
|
|
|
|
this loop is re-entrant. May be called by \i command
|
|
which reads input from a file
|
|
|
|
*db_ptr must be initialized and set
|
|
*/
|
|
|
|
int
|
|
MainLoop(PsqlSettings *settings, FILE* source)
|
|
{
|
|
char* line; /* line of input*/
|
|
int len; /* length of the line */
|
|
char query[MAX_QUERY_BUFFER]; /* multi-line query storage */
|
|
int exitStatus = 0;
|
|
int slashCmdStatus = 0;
|
|
/* slashCmdStatus can be:
|
|
0 - send currently constructed query to backend (i.e. we got a \g)
|
|
1 - skip processing of this line, continue building up query
|
|
2 - terminate processing of this query entirely
|
|
*/
|
|
|
|
bool sendQuery = 0;
|
|
bool querySent = 0;
|
|
bool interactive;
|
|
READ_ROUTINE GetNextLine;
|
|
|
|
interactive = ((source == stdin) && !settings->notty);
|
|
#define PROMPT "=> "
|
|
if (interactive) {
|
|
if (settings->prompt)
|
|
free(settings->prompt);
|
|
settings->prompt = malloc(strlen(PQdb(settings->db)) + strlen(PROMPT) + 1);
|
|
if (settings->quiet)
|
|
settings->prompt[0] = '\0';
|
|
else
|
|
sprintf(settings->prompt,"%s%s", PQdb(settings->db), PROMPT);
|
|
if (settings->useReadline) {
|
|
using_history();
|
|
GetNextLine = gets_readline;
|
|
} else
|
|
GetNextLine = gets_noreadline;
|
|
|
|
}
|
|
else
|
|
GetNextLine = gets_fromFile;
|
|
|
|
query[0] = '\0';
|
|
|
|
/* main loop for getting queries and executing them */
|
|
while ((line = GetNextLine(settings->prompt, source)) != NULL)
|
|
{
|
|
exitStatus = 0;
|
|
line = rightTrim(line); /* remove whitespaces on the right, incl. \n's */
|
|
|
|
if (line[0] == '\0') {
|
|
free(line);
|
|
continue;
|
|
}
|
|
|
|
/* filter out comment lines that begin with --,
|
|
this could be incorrect if -- is part of a quoted string.
|
|
But we won't go through the trouble of detecting that. If you have
|
|
-- in your quoted string, be careful and don't start a line with it*/
|
|
if (line[0] == '-' && line[1] == '-') {
|
|
if (settings->singleStep) /* in single step mode, show comments */
|
|
fprintf(stdout,"%s\n",line);
|
|
free(line);
|
|
continue;
|
|
}
|
|
if (line[0] != '\\' && querySent)
|
|
{
|
|
query[0]='\0';
|
|
querySent = 0;
|
|
}
|
|
|
|
len = strlen(line);
|
|
|
|
if (interactive && settings->useReadline)
|
|
add_history(line); /* save non-empty lines in history */
|
|
|
|
/* do the query immediately if we are doing single line queries
|
|
or if the last character is a semicolon */
|
|
sendQuery = settings->singleLineMode || (line[len-1] == ';') ;
|
|
|
|
/* normally, \ commands have to be start the line,
|
|
but for backwards compatibility with monitor,
|
|
check for \g at the end of line */
|
|
if (len > 2 && !sendQuery)
|
|
{
|
|
if (line[len-1]=='g' && line[len-2]=='\\')
|
|
{
|
|
sendQuery = 1;
|
|
line[len-2]='\0';
|
|
}
|
|
}
|
|
|
|
/* slash commands have to be on their own line */
|
|
if (line[0] == '\\') {
|
|
slashCmdStatus = HandleSlashCmds(settings,
|
|
line,
|
|
query);
|
|
if (slashCmdStatus == 1)
|
|
continue;
|
|
if (slashCmdStatus == 2)
|
|
break;
|
|
if (slashCmdStatus == 0)
|
|
sendQuery = 1;
|
|
}
|
|
else
|
|
if (strlen(query) + len > MAX_QUERY_BUFFER)
|
|
{
|
|
fprintf(stderr,"query buffer max length of %d exceeded\n",MAX_QUERY_BUFFER);
|
|
fprintf(stderr,"query line ignored\n");
|
|
}
|
|
else
|
|
if (query[0]!='\0') {
|
|
strcat(query,"\n");
|
|
strcat(query,line);
|
|
}
|
|
else
|
|
strcpy(query,line);
|
|
|
|
if (sendQuery && query[0] != '\0')
|
|
{
|
|
/* echo the line read from the file,
|
|
unless we are in single_step mode, because single_step mode
|
|
will echo anyway */
|
|
if (!interactive && !settings->singleStep && !settings->quiet)
|
|
fprintf(stderr,"%s\n", query);
|
|
|
|
exitStatus = SendQuery(settings, query);
|
|
querySent = 1;
|
|
}
|
|
|
|
free(line); /* free storage malloc'd by GetNextLine */
|
|
} /* while */
|
|
return exitStatus;
|
|
}
|
|
|
|
int
|
|
main(int argc, char** argv)
|
|
{
|
|
extern char* optarg;
|
|
extern int optind;
|
|
|
|
char* dbname = NULL;
|
|
char* host = NULL;
|
|
char* port = NULL;
|
|
char* qfilename = NULL;
|
|
char errbuf[ERROR_MSG_LENGTH];
|
|
|
|
PsqlSettings settings;
|
|
|
|
char* singleQuery = NULL;
|
|
|
|
bool listDatabases = 0 ;
|
|
int exitStatus = 0;
|
|
bool singleSlashCmd = 0;
|
|
int c;
|
|
|
|
memset(&settings, 0, sizeof settings);
|
|
settings.opt.align = 1;
|
|
settings.opt.header = 1;
|
|
settings.queryFout = stdout;
|
|
settings.opt.fieldSep=dupstr(DEFAULT_FIELD_SEP);
|
|
if (!isatty(0) || !isatty(1))
|
|
settings.quiet = settings.notty = 1;
|
|
else
|
|
#ifndef NOREADLINE
|
|
settings.useReadline = 1;
|
|
#endif
|
|
|
|
while ((c = getopt(argc, argv, "Aa:c:d:ef:F:lhH:nso:p:qStTx")) != EOF) {
|
|
switch (c) {
|
|
case 'A':
|
|
settings.opt.align = 0;
|
|
break;
|
|
case 'a':
|
|
fe_setauthsvc(optarg, errbuf);
|
|
break;
|
|
case 'c':
|
|
singleQuery = optarg;
|
|
if ( singleQuery[0] == '\\' ) {
|
|
singleSlashCmd=1;
|
|
}
|
|
break;
|
|
case 'd':
|
|
dbname = optarg;
|
|
break;
|
|
case 'e':
|
|
settings.echoQuery = 1;
|
|
break;
|
|
case 'f':
|
|
qfilename = optarg;
|
|
break;
|
|
case 'F':
|
|
settings.opt.fieldSep=dupstr(optarg);
|
|
break;
|
|
case 'l':
|
|
listDatabases = 1;
|
|
break;
|
|
case 'h':
|
|
host = optarg;
|
|
break;
|
|
case 'H':
|
|
settings.opt.html3 = 1;
|
|
break;
|
|
case 'n':
|
|
settings.useReadline = 0;
|
|
break;
|
|
case 'o':
|
|
setFout(&settings, optarg);
|
|
break;
|
|
case 'p':
|
|
port = optarg;
|
|
break;
|
|
case 'q':
|
|
settings.quiet = 1;
|
|
break;
|
|
case 's':
|
|
settings.singleStep = 1;
|
|
break;
|
|
case 'S':
|
|
settings.singleLineMode = 1;
|
|
break;
|
|
case 't':
|
|
settings.opt.header = 0;
|
|
break;
|
|
case 'T':
|
|
settings.opt.tableOpt = dupstr(optarg);
|
|
break;
|
|
case 'x':
|
|
settings.opt.expanded = 0;
|
|
break;
|
|
default:
|
|
usage(argv[0]);
|
|
break;
|
|
}
|
|
}
|
|
/* if we still have an argument, use it as the database name */
|
|
if (argc - optind == 1)
|
|
dbname = argv[optind];
|
|
|
|
if (listDatabases)
|
|
dbname = "template1";
|
|
|
|
settings.db = PQsetdb(host, port, NULL, NULL, dbname);
|
|
dbname = PQdb(settings.db);
|
|
|
|
if (PQstatus(settings.db) == CONNECTION_BAD) {
|
|
fprintf(stderr,"Connection to database '%s' failed.\n", dbname);
|
|
fprintf(stderr,"%s",PQerrorMessage(settings.db));
|
|
exit(1);
|
|
}
|
|
if (listDatabases) {
|
|
exit(listAllDbs(&settings));
|
|
}
|
|
|
|
if (!settings.quiet && !singleQuery && !qfilename) {
|
|
printf("Welcome to the POSTGRES95 interactive sql monitor:\n");
|
|
printf(" Please read the file COPYRIGHT for copyright terms of POSTGRES95\n\n");
|
|
printf(" type \\? for help on slash commands\n");
|
|
printf(" type \\q to quit\n");
|
|
printf(" type \\g or terminate with semicolon to execute query\n");
|
|
printf(" You are currently connected to the database: %s\n\n", dbname);
|
|
}
|
|
|
|
if (qfilename || singleSlashCmd) {
|
|
/* read in a file full of queries instead of reading in queries
|
|
interactively */
|
|
char *line;
|
|
|
|
if ( singleSlashCmd ) {
|
|
/* Not really a query, but "Do what I mean, not what I say." */
|
|
line = singleQuery;
|
|
}
|
|
else {
|
|
line = malloc(strlen(qfilename) + 5);
|
|
sprintf(line,"\\i %s", qfilename);
|
|
}
|
|
HandleSlashCmds(&settings, line, "");
|
|
|
|
} else {
|
|
if (singleQuery) {
|
|
exitStatus = SendQuery(&settings, singleQuery);
|
|
}
|
|
else
|
|
exitStatus = MainLoop(&settings, stdin);
|
|
}
|
|
|
|
PQfinish(settings.db);
|
|
|
|
return exitStatus;
|
|
}
|
|
|
|
#define COPYBUFSIZ 8192
|
|
|
|
static void
|
|
handleCopyOut(PGresult *res, bool quiet)
|
|
{
|
|
bool copydone = false;
|
|
char copybuf[COPYBUFSIZ];
|
|
int ret;
|
|
|
|
if (!quiet)
|
|
fprintf(stdout, "Copy command returns...\n");
|
|
|
|
while (!copydone) {
|
|
ret = PQgetline(res->conn, copybuf, COPYBUFSIZ);
|
|
|
|
if (copybuf[0] == '.' && copybuf[1] =='\0') {
|
|
copydone = true; /* don't print this... */
|
|
} else {
|
|
fputs(copybuf, stdout);
|
|
switch (ret) {
|
|
case EOF:
|
|
copydone = true;
|
|
/*FALLTHROUGH*/
|
|
case 0:
|
|
fputc('\n', stdout);
|
|
break;
|
|
case 1:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
fflush(stdout);
|
|
PQendcopy(res->conn);
|
|
}
|
|
|
|
|
|
static void
|
|
handleCopyIn(PGresult *res, bool quiet)
|
|
{
|
|
bool copydone = false;
|
|
bool firstload;
|
|
bool linedone;
|
|
char copybuf[COPYBUFSIZ];
|
|
char *s;
|
|
int buflen;
|
|
int c;
|
|
|
|
if (!quiet) {
|
|
fputs("Enter info followed by a newline\n", stdout);
|
|
fputs("End with a dot on a line by itself.\n", stdout);
|
|
}
|
|
|
|
/*
|
|
* eat extra newline still in input buffer
|
|
*
|
|
*/
|
|
fflush(stdin);
|
|
if ((c = getc(stdin)) != '\n' && c != EOF) {
|
|
(void) ungetc(c, stdin);
|
|
}
|
|
|
|
while (!copydone) { /* for each input line ... */
|
|
if (!quiet) {
|
|
fputs(">> ", stdout);
|
|
fflush(stdout);
|
|
}
|
|
firstload = true;
|
|
linedone = false;
|
|
while (!linedone) { /* for each buffer ... */
|
|
s = copybuf;
|
|
buflen = COPYBUFSIZ;
|
|
for (; buflen > 1 &&
|
|
!(linedone = (c = getc(stdin)) == '\n' || c == EOF);
|
|
--buflen) {
|
|
*s++ = c;
|
|
}
|
|
if (c == EOF) {
|
|
/* reading from stdin, but from a file */
|
|
PQputline(res->conn, ".");
|
|
copydone = true;
|
|
break;
|
|
}
|
|
*s = '\0';
|
|
PQputline(res->conn, copybuf);
|
|
if (firstload) {
|
|
if (!strcmp(copybuf, ".")) {
|
|
copydone = true;
|
|
}
|
|
firstload = false;
|
|
}
|
|
}
|
|
PQputline(res->conn, "\n");
|
|
}
|
|
PQendcopy(res->conn);
|
|
}
|
|
|
|
/* try to open fname and return a FILE*,
|
|
if it fails, use stdout, instead */
|
|
|
|
FILE*
|
|
setFout(PsqlSettings *ps, char *fname)
|
|
{
|
|
if (ps->queryFout && ps->queryFout != stdout)
|
|
{
|
|
if (ps->pipe)
|
|
pclose(ps->queryFout);
|
|
else
|
|
fclose(ps->queryFout);
|
|
}
|
|
if (!fname)
|
|
ps->queryFout = stdout;
|
|
else
|
|
{
|
|
if (*fname == '|')
|
|
{
|
|
signal(SIGPIPE, SIG_IGN);
|
|
ps->queryFout = popen(fname+1, "w");
|
|
ps->pipe = 1;
|
|
}
|
|
else
|
|
{
|
|
ps->queryFout = fopen(fname, "w");
|
|
ps->pipe = 0;
|
|
}
|
|
if (!ps->queryFout) {
|
|
perror(fname);
|
|
ps->queryFout = stdout;
|
|
}
|
|
}
|
|
return ps->queryFout;
|
|
}
|