1 /*-------------------------------------------------------------------------
4 * an interactive front-end to postgres95
6 * Copyright (c) 1996, Regents of the University of California
10 * $Header: /cvsroot/pgsql/src/bin/psql/Attic/psql.c,v 1.35 1996/11/26 07:38:28 bryanh Exp $
12 *-------------------------------------------------------------------------
18 #include <sys/types.h>
25 #include "stringutils.h"
34 /* from the GNU readline library */
39 #include <readline/readline.h>
40 #include <readline/history.h>
44 #define MAX_QUERY_BUFFER 20000
46 #define COPYBUFSIZ 8192
48 #define DEFAULT_FIELD_SEP "|"
49 #define DEFAULT_EDITOR "vi"
50 #define DEFAULT_SHELL "/bin/sh"
52 typedef struct _psqlSettings {
53 PGconn *db; /* connection to backend */
54 FILE *queryFout; /* where to send the query results */
55 PQprintOpt opt; /* options to be passed to PQprint */
56 char *prompt; /* prompt to display */
57 char *gfname; /* one-shot file output argument for \g */
58 bool notty; /* input or output is not a tty */
59 bool pipe; /* queryFout is from a popen() */
60 bool echoQuery; /* echo the query before sending it */
61 bool quiet; /* run quietly, no messages, no promt */
62 bool singleStep; /* prompt before for each query */
63 bool singleLineMode; /* query terminated by newline */
64 bool useReadline;/* use libreadline routines */
67 /* declarations for functions in this file */
68 static void usage(char *progname);
69 static void slashUsage();
70 static void handleCopyOut(PGresult * res, bool quiet, FILE * copystream);
72 handleCopyIn(PGresult * res, const bool mustprompt,
74 static int tableList(PsqlSettings * ps, bool deep_tablelist);
75 static int tableDesc(PsqlSettings * ps, char *table);
77 char *gets_noreadline(char *prompt, FILE * source);
78 char *gets_readline(char *prompt, FILE * source);
79 char *gets_fromFile(char *prompt, FILE * source);
80 int listAllDbs(PsqlSettings * settings);
82 SendQuery(bool * success_p, PsqlSettings * settings, const char *query,
83 const bool copy_in, const bool copy_out, FILE * copystream);
85 HandleSlashCmds(PsqlSettings * settings,
88 int MainLoop(PsqlSettings * settings, FILE * source);
89 /* probably should move this into libpq */
96 FILE *setFout(PsqlSettings * ps, char *fname);
99 * usage print out usage for command line arguments
103 usage(char *progname)
105 fprintf(stderr, "Usage: %s [options] [dbname]\n", progname);
106 fprintf(stderr, "\t -a authsvc set authentication service\n");
107 fprintf(stderr, "\t -A turn off alignment when printing out attributes\n");
108 fprintf(stderr, "\t -c query run single query (slash commands too)\n");
109 fprintf(stderr, "\t -d dbName specify database name\n");
110 fprintf(stderr, "\t -e echo the query sent to the backend\n");
111 fprintf(stderr, "\t -f filename use file as a source of queries\n");
112 fprintf(stderr, "\t -F sep set the field separator (default is " ")\n");
113 fprintf(stderr, "\t -h host set database server host\n");
114 fprintf(stderr, "\t -H turn on html3.0 table output\n");
115 fprintf(stderr, "\t -l list available databases\n");
116 fprintf(stderr, "\t -n don't use readline library\n");
117 fprintf(stderr, "\t -o filename send output to filename or (|pipe)\n");
118 fprintf(stderr, "\t -p port set port number\n");
119 fprintf(stderr, "\t -q run quietly (no messages, no prompts)\n");
120 fprintf(stderr, "\t -s single step mode (prompts for each query)\n");
121 fprintf(stderr, "\t -S single line mode (i.e. query terminated by newline)\n");
122 fprintf(stderr, "\t -t turn off printing of headings and row count\n");
123 fprintf(stderr, "\t -T html set html3.0 table command options (cf. -H)\n");
124 fprintf(stderr, "\t -x turn on expanded output (field names on left)\n");
129 * slashUsage print out usage for the backslash commands
135 return f ? "on" : "off";
139 slashUsage(PsqlSettings * ps)
141 fprintf(stderr, " \\? -- help\n");
142 fprintf(stderr, " \\a -- toggle field-alignment (currenty %s)\n", on(ps->opt.align));
143 fprintf(stderr, " \\C [<captn>] -- set html3 caption (currently '%s')\n", ps->opt.caption ? ps->opt.caption : "");
144 fprintf(stderr, " \\connect <dbname> -- connect to new database (currently '%s')\n", PQdb(ps->db));
145 fprintf(stderr, " \\copy <dbname> -- copy table to/from a file\n");
146 fprintf(stderr, " \\d [<table>] -- list tables in database or columns in <table>, * for all\n");
147 fprintf(stderr, " \\e [<fname>] -- edit the current query buffer or <fname>, \\E execute too\n");
148 fprintf(stderr, " \\f [<sep>] -- change field separater (currently '%s')\n", ps->opt.fieldSep);
149 fprintf(stderr, " \\g [<fname>] [|<cmd>] -- send query to backend [and results in <fname> or pipe]\n");
150 fprintf(stderr, " \\h [<cmd>] -- help on syntax of sql commands, * for all commands\n");
151 fprintf(stderr, " \\H -- toggle html3 output (currently %s)\n", on(ps->opt.html3));
152 fprintf(stderr, " \\i <fname> -- read and execute queries from filename\n");
153 fprintf(stderr, " \\l -- list all databases\n");
154 fprintf(stderr, " \\m -- toggle monitor-like table display (currently %s)\n", on(ps->opt.standard));
155 fprintf(stderr, " \\o [<fname>] [|<cmd>] -- send all query results to stdout, <fname>, or pipe\n");
156 fprintf(stderr, " \\p -- print the current query buffer\n");
157 fprintf(stderr, " \\q -- quit\n");
158 fprintf(stderr, " \\r -- reset(clear) the query buffer\n");
159 fprintf(stderr, " \\s [<fname>] -- print history or save it in <fname>\n");
160 fprintf(stderr, " \\t -- toggle table headings and row count (currently %s)\n", on(ps->opt.header));
161 fprintf(stderr, " \\T [<html>] -- set html3.0 <table ...> options (currently '%s')\n", ps->opt.tableOpt ? ps->opt.tableOpt : "");
162 fprintf(stderr, " \\x -- toggle expanded output (currently %s)\n", on(ps->opt.expanded));
163 fprintf(stderr, " \\! [<cmd>] -- shell escape or command\n");
167 PSQLexec(PsqlSettings * ps, char *query)
169 PGresult *res = PQexec(ps->db, query);
171 fputs(PQerrorMessage(ps->db), stderr);
173 if (PQresultStatus(res) == PGRES_COMMAND_OK ||
174 PQresultStatus(res) == PGRES_TUPLES_OK)
177 fputs(PQerrorMessage(ps->db), stderr);
185 * list all the databases in the system returns 0 if all went well
191 listAllDbs(PsqlSettings * ps)
194 char *query = "select * from pg_database;";
196 if (!(results = PSQLexec(ps, query)))
199 PQprint(ps->queryFout,
208 * List The Database Tables returns 0 if all went well
212 tableList(PsqlSettings * ps, bool deep_tablelist)
223 strcat(listbuf, "SELECT usename, relname, relkind, relhasrules");
224 strcat(listbuf, " FROM pg_class, pg_user ");
225 strcat(listbuf, "WHERE ( relkind = 'r' OR relkind = 'i') ");
226 strcat(listbuf, " and relname !~ '^pg_'");
227 strcat(listbuf, " and relname !~ '^Inv[0-9]+'");
229 * the usesysid = relowner won't work on stock 1.0 dbs, need to add in
230 * the int4oideq function
232 strcat(listbuf, " and usesysid = relowner");
233 strcat(listbuf, " ORDER BY relname ");
234 if (!(res = PSQLexec(ps, listbuf)))
237 /* first, print out the attribute names */
238 nColumns = PQntuples(res);
240 if (deep_tablelist) {
241 /* describe everything here */
243 table = (char **) malloc(nColumns * sizeof(char *));
247 /* load table table */
248 for (i = 0; i < nColumns; i++) {
249 table[i] = (char *) malloc(PQgetlength(res, i, 1) * sizeof(char) + 1);
250 if (table[i] == NULL)
252 strcpy(table[i], PQgetvalue(res, i, 1));
256 for (i = 0; i < nColumns; i++) {
257 tableDesc(ps, table[i]);
261 /* Display the information */
263 printf("\nDatabase = %s\n", PQdb(ps->db));
264 printf(" +------------------+----------------------------------+----------+\n");
265 printf(" | Owner | Relation | Type |\n");
266 printf(" +------------------+----------------------------------+----------+\n");
268 /* next, print out the instances */
269 for (i = 0; i < PQntuples(res); i++) {
270 printf(" | %-16.16s", PQgetvalue(res, i, 0));
271 printf(" | %-32.32s | ", PQgetvalue(res, i, 1));
272 rk = PQgetvalue(res, i, 2);
273 rr = PQgetvalue(res, i, 3);
274 if (strcmp(rk, "r") == 0)
275 printf("%-8.8s |", (rr[0] == 't') ? "view?" : "table");
277 printf("%-8.8s |", "index");
280 printf(" +------------------+----------------------------------+----------+\n");
286 fprintf(stderr, "Couldn't find any tables!\n");
294 * Describe the columns in a database table. returns 0 if all went well
299 tableDesc(PsqlSettings * ps, char *table)
309 /* Build the query */
312 strcat(descbuf, "SELECT a.attnum, a.attname, t.typname, a.attlen");
313 strcat(descbuf, " FROM pg_class c, pg_attribute a, pg_type t ");
314 strcat(descbuf, " WHERE c.relname = '");
315 strcat(descbuf, table);
316 strcat(descbuf, "'");
317 strcat(descbuf, " and a.attnum > 0 ");
318 strcat(descbuf, " and a.attrelid = c.oid ");
319 strcat(descbuf, " and a.atttypid = t.oid ");
320 strcat(descbuf, " ORDER BY attnum ");
321 if (!(res = PSQLexec(ps, descbuf)))
323 /* first, print out the attribute names */
324 nColumns = PQntuples(res);
327 * * Display the information
330 printf("\nTable = %s\n", table);
331 printf("+----------------------------------+----------------------------------+-------+\n");
332 printf("| Field | Type | Length|\n");
333 printf("+----------------------------------+----------------------------------+-------+\n");
335 /* next, print out the instances */
336 for (i = 0; i < PQntuples(res); i++) {
337 printf("| %-32.32s | ", PQgetvalue(res, i, 1));
338 rtype = PQgetvalue(res, i, 2);
339 rsize = atoi(PQgetvalue(res, i, 3));
340 if (strcmp(rtype, "text") == 0) {
341 printf("%-32.32s |", rtype);
342 printf("%6s |", "var");
343 } else if (strcmp(rtype, "bpchar") == 0) {
344 printf("%-32.32s |", "(bp)char");
345 printf("%6i |", rsize > 0 ? rsize - 4 : 0);
346 } else if (strcmp(rtype, "varchar") == 0) {
347 printf("%-32.32s |", rtype);
348 printf("%6i |", rsize > 0 ? rsize - 4 : 0);
350 /* array types start with an underscore */
352 printf("%-32.32s |", rtype);
355 newname = malloc(strlen(rtype) + 2);
356 strcpy(newname, rtype + 1);
357 strcat(newname, "[]");
358 printf("%-32.32s |", newname);
362 printf("%6i |", rsize);
364 printf("%6s |", "var");
368 printf("+----------------------------------+----------------------------------+-------+\n");
374 fprintf(stderr, "Couldn't find table %s!\n", table);
379 typedef char *(*READ_ROUTINE) (char *prompt, FILE * source);
382 * gets_noreadline prompt source gets a line of input without calling
383 * readline, the source is ignored
386 gets_noreadline(char *prompt, FILE * source)
388 fputs(prompt, stdout);
390 return (gets_fromFile(prompt, stdin));
394 * gets_readline prompt source the routine to get input from GNU readline(),
395 * the source is ignored the prompt argument is used as the prompting string
398 gets_readline(char *prompt, FILE * source)
400 return (readline(prompt));
404 * gets_fromFile prompt source
406 * the routine to read from a file, the prompt argument is ignored the source
407 * argument is a FILE *
410 gets_fromFile(char *prompt, FILE * source)
415 line = malloc(MAX_QUERY_BUFFER + 1);
417 /* read up to MAX_QUERY_BUFFER characters */
418 if (fgets(line, MAX_QUERY_BUFFER, source) == NULL)
421 line[MAX_QUERY_BUFFER - 1] = '\0';
423 if (len == MAX_QUERY_BUFFER) {
424 fprintf(stderr, "line read exceeds maximum length. Truncating at %d\n",
431 * SendQuery: send the query string to the backend return *success_p = 1 if
432 * the query executed successfully returns *success_p = 0 otherwise
435 SendQuery(bool * success_p, PsqlSettings * settings, const char *query,
436 const bool copy_in, const bool copy_out, FILE * copystream)
442 if (settings->singleStep)
443 fprintf(stdout, "\n**************************************"
444 "*****************************************\n");
446 if (settings->echoQuery || settings->singleStep) {
447 fprintf(stderr, "QUERY: %s\n", query);
450 if (settings->singleStep) {
451 fprintf(stdout, "\n**************************************"
452 "*****************************************\n");
454 printf("\npress return to continue ..\n");
455 gets_fromFile("", stdin);
457 results = PQexec(settings->db, query);
458 if (results == NULL) {
459 fprintf(stderr, "%s", PQerrorMessage(settings->db));
462 switch (PQresultStatus(results)) {
463 case PGRES_TUPLES_OK:
464 if (settings->gfname) {
465 PsqlSettings ps = *settings;
467 ps.queryFout = stdout;
468 fp = setFout(&ps, settings->gfname);
469 if (!fp || fp == stdout) {
481 free(settings->gfname);
482 settings->gfname = NULL;
486 PQprint(settings->queryFout,
489 fflush(settings->queryFout);
493 case PGRES_EMPTY_QUERY:
496 case PGRES_COMMAND_OK:
498 if (!settings->quiet)
499 fprintf(stdout, "%s\n", PQcmdStatus(results));
504 handleCopyOut(results, settings->quiet, copystream);
506 if (!settings->quiet)
507 fprintf(stdout, "Copy command returns...\n");
509 handleCopyOut(results, settings->quiet, stdout);
515 handleCopyIn(results, false, copystream);
519 * eat extra newline still in input buffer
523 if ((c = getc(stdin)) != '\n' && c != EOF)
524 (void) ungetc(c, stdin);
525 handleCopyIn(results, !settings->quiet, stdin);
528 case PGRES_NONFATAL_ERROR:
529 case PGRES_FATAL_ERROR:
530 case PGRES_BAD_RESPONSE:
532 fprintf(stderr, "%s", PQerrorMessage(settings->db));
536 if (PQstatus(settings->db) == CONNECTION_BAD) {
538 "We have lost the connection to the backend, so "
539 "further processing is impossible. "
541 exit(2); /* we are out'ta here */
543 /* check for asynchronous returns */
544 notify = PQnotifies(settings->db);
547 "ASYNC NOTIFY of '%s' from backend pid '%d' received\n",
548 notify->relname, notify->be_pid);
557 editFile(char *fname)
561 editorName = getenv("EDITOR");
563 editorName = DEFAULT_EDITOR;
564 sys = malloc(strlen(editorName) + strlen(fname) + 32 + 1);
569 sprintf(sys, "exec '%s' '%s'", editorName, fname);
575 toggle(PsqlSettings * settings, bool * sw, char *msg)
578 if (!settings->quiet)
579 fprintf(stderr, "turned %s %s\n", on(*sw), msg);
586 unescape(char *dest, const char *source)
588 /*-----------------------------------------------------------------------------
589 Return as the string <dest> the value of string <source> with escape
590 sequences turned into the bytes they represent.
591 -----------------------------------------------------------------------------*/
593 bool esc; /* Last character we saw was the escape
596 esc = false; /* Haven't seen escape character yet */
597 for (p = (char *) source; *p; p++) {
598 char c; /* Our output character */
621 } else if (*p == '\\') {
623 c = ' '; /* meaningless, but compiler doesn't know
632 *dest = '\0'; /* Terminating null character */
638 parse_slash_copy(const char *args, char *table, const int table_len,
639 char *file, const int file_len,
640 bool * from_p, bool * error_p)
645 * A copy of the \copy command arguments, except that we modify it as we
646 * parse to suit our parsing needs.
648 char *table_tok, *fromto_tok;
650 strncpy(work_args, args, sizeof(work_args));
651 work_args[sizeof(work_args) - 1] = '\0';
653 *error_p = false; /* initial assumption */
655 table_tok = strtok(work_args, " ");
656 if (table_tok == NULL) {
657 fprintf(stderr, "\\copy needs arguments.\n");
660 strncpy(table, table_tok, table_len);
661 file[table_len - 1] = '\0';
663 fromto_tok = strtok(NULL, " ");
664 if (fromto_tok == NULL) {
665 fprintf(stderr, "'FROM' or 'TO' must follow table name.\n");
668 if (strcasecmp(fromto_tok, "from") == 0)
670 else if (strcasecmp(fromto_tok, "to") == 0)
674 "Unrecognized token found where "
675 "'FROM' or 'TO' expected: '%s'.\n",
682 file_tok = strtok(NULL, " ");
683 if (file_tok == NULL) {
684 fprintf(stderr, "A file pathname must follow '%s'.\n",
688 strncpy(file, file_tok, file_len);
689 file[file_len - 1] = '\0';
690 if (strtok(NULL, " ") != NULL) {
692 "You have extra tokens after the filename.\n");
704 do_copy(const char *args, PsqlSettings * settings)
706 /*---------------------------------------------------------------------------
707 Execute a \copy command (frontend copy). We have to open a file, then
708 submit a COPY query to the backend and either feed it data from the
709 file or route its response into the file.
711 We do a text copy with default (tab) column delimiters. Some day, we
712 should do all the things a backend copy can do.
714 ----------------------------------------------------------------------------*/
716 /* The COPY command we send to the back end */
718 /* The direction of the copy is from a file to a table. */
719 char file[MAXPATHLEN + 1];
720 /* The pathname of the file from/to which we copy */
721 char table[NAMEDATALEN + 1];
722 /* The name of the table from/to which we copy */
724 /* The \c command has invalid syntax */
727 parse_slash_copy(args, table, sizeof(table), file, sizeof(file),
728 &from, &syntax_error);
731 strcpy(query, "COPY ");
732 strcat(query, table);
735 strcat(query, " FROM stdin");
737 strcat(query, " TO stdout");
740 copystream = fopen(file, "r");
742 copystream = fopen(file, "w");
744 if (copystream == NULL)
746 "Unable to open file %s which to copy, errno = %s (%d).",
747 from ? "from" : "to", strerror(errno), errno);
749 bool success; /* The query succeeded at the backend */
751 SendQuery(&success, settings, query, from, !from, copystream);
753 if (!settings->quiet) {
755 fprintf(stdout, "Successfully copied.\n");
757 fprintf(stdout, "Copy failed.\n");
765 do_connect(const char *new_dbname, PsqlSettings * settings)
768 char *dbname = PQdb(settings->db);
770 fprintf(stderr, "\\connect must be followed by a database name\n");
772 PGconn *olddb = settings->db;
774 printf("closing connection to database: %s\n", dbname);
775 settings->db = PQsetdb(PQhost(olddb), PQport(olddb),
776 NULL, NULL, new_dbname);
777 printf("connecting to new database: %s\n", new_dbname);
778 if (PQstatus(settings->db) == CONNECTION_BAD) {
779 fprintf(stderr, "%s\n", PQerrorMessage(settings->db));
780 printf("reconnecting to %s\n", dbname);
781 settings->db = PQsetdb(PQhost(olddb), PQport(olddb),
783 if (PQstatus(settings->db) == CONNECTION_BAD) {
785 "could not reconnect to %s. exiting\n", dbname);
790 free(settings->prompt);
791 settings->prompt = malloc(strlen(PQdb(settings->db)) + 10);
792 sprintf(settings->prompt, "%s=> ", PQdb(settings->db));
799 do_edit(const char *filename_arg, char *query, int *status_p)
806 const int ql = strlen(query);
810 fname = (char *) filename_arg;
813 sprintf(tmp, "/tmp/psql.%ld.%ld", (long) geteuid(), (long) getpid());
817 if ((fd = open(tmp, O_EXCL | O_CREAT | O_WRONLY, 0600)) == -1) {
821 if (query[ql - 1] != '\n')
823 if (write(fd, query, ql) != ql) {
840 if ((fd = open(fname, O_RDONLY)) == -1) {
846 if ((cc = read(fd, query, MAX_QUERY_BUFFER)) == -1) {
867 do_help(const char *topic)
871 char left_center_right; /* Which column we're
873 int i; /* Index into QL_HELP[] */
875 printf("type \\h <cmd> where <cmd> is one of the following:\n");
877 left_center_right = 'L';/* Start with left column */
879 while (QL_HELP[i].cmd != NULL) {
880 switch (left_center_right) {
882 printf(" %-25s", QL_HELP[i].cmd);
883 left_center_right = 'C';
886 printf("%-25s", QL_HELP[i].cmd);
887 left_center_right = 'R';
890 printf("%-25s\n", QL_HELP[i].cmd);
891 left_center_right = 'L';
896 if (left_center_right != 'L')
898 printf("type \\h * for a complete description of all commands\n");
900 int i; /* Index into QL_HELP[] */
901 bool help_found; /* We found the help he asked for */
903 help_found = false; /* Haven't found it yet */
904 for (i = 0; QL_HELP[i].cmd; i++) {
905 if (strcmp(QL_HELP[i].cmd, topic) == 0 ||
906 strcmp(topic, "*") == 0) {
908 printf("Command: %s\n", QL_HELP[i].cmd);
909 printf("Description: %s\n", QL_HELP[i].help);
911 printf("%s\n", QL_HELP[i].syntax);
916 printf("command not found, "
917 "try \\h with no arguments to see available help\n");
924 do_shell(const char *command)
931 shellName = getenv("SHELL");
932 if (shellName == NULL)
933 shellName = DEFAULT_SHELL;
934 sys = malloc(strlen(shellName) + 16);
939 sprintf(sys, "exec %s", shellName);
951 * Handles all the different commands that start with \ db_ptr is a pointer to
952 * the TgDb* structure line is the current input line prompt_ptr is a pointer
953 * to the prompt string, a pointer is used because the prompt can be used
954 * with a connection to a new database returns a status: 0 - send currently
955 * constructed query to backend (i.e. we got a \g) 1 - skip processing of
956 * this line, continue building up query 2 - terminate processing of this
957 * query entirely, 3 - new query supplied by edit
960 HandleSlashCmds(PsqlSettings * settings,
967 * Pointer inside the <cmd> string to the argument of the slash command,
968 * assuming it is a one-character slash command. If it's not a
969 * one-character command, this is meaningless.
973 * Pointer inside the <cmd> string to the argument of the slash command
974 * assuming it's not a one-character command. If it's a one-character
975 * command, this is meaningless.
979 * String: value of the slash command, less the slash and with escape
983 /* Offset within <cmd> of first blank */
985 cmd = malloc(strlen(line)); /* unescaping better not make string grow. */
987 unescape(cmd, line + 1); /* sets cmd string */
990 * Originally, there were just single character commands. Now, we define
991 * some longer, friendly commands, but we have to keep the old single
992 * character commands too. \c used to be what \connect is now.
993 * Complicating matters is the fact that with the single-character
994 * commands, you can start the argument right after the single character,
995 * so "\copy" would mean "connect to database named 'opy'".
999 optarg = cmd + 1 + strspn(cmd + 1, " \t");
1003 blank_loc = strcspn(cmd, " \t");
1007 optarg2 = cmd + blank_loc + strspn(cmd + blank_loc, " \t");
1011 case 'a': /* toggles to align fields on output */
1012 toggle(settings, &settings->opt.align, "field alignment");
1014 case 'C': /* define new caption */
1015 if (settings->opt.caption)
1016 free(settings->opt.caption);
1019 if (settings->opt.caption)
1020 free(settings->opt.caption);
1021 settings->opt.caption = NULL;
1023 else if (!(settings->opt.caption = strdup(optarg))) {
1029 if (strncmp(cmd, "copy ", strlen("copy ")) == 0)
1030 do_copy(optarg2, settings);
1031 else if (strncmp(cmd, "connect ", strlen("connect ")) == 0)
1032 do_connect(optarg2, settings);
1034 do_connect(optarg, settings);
1037 case 'd': /* \d describe tables or columns in a table */
1039 tableList(settings, 0);
1042 if (strcmp(optarg, "*") == 0) {
1043 tableList(settings, 0);
1044 tableList(settings, 1);
1046 tableDesc(settings, optarg);
1049 case 'e': /* edit */
1051 do_edit(optarg, query, &status);
1057 static char *lastfile;
1058 struct stat st, st2;
1062 lastfile = malloc(strlen(optarg + 1));
1067 strcpy(lastfile, optarg);
1068 } else if (!lastfile) {
1069 fprintf(stderr, "\\r must be followed by a file name initially\n");
1072 stat(lastfile, &st);
1074 if ((stat(lastfile, &st2) == -1) || ((fd = fopen(lastfile, "r")) == NULL)) {
1078 if (st2.st_mtime == st.st_mtime) {
1079 if (!settings->quiet)
1080 fprintf(stderr, "warning: %s not modified. query not executed\n", lastfile);
1084 MainLoop(settings, fd);
1090 char *fs = DEFAULT_FIELD_SEP;
1093 if (settings->opt.fieldSep);
1094 free(settings->opt.fieldSep);
1095 if (!(settings->opt.fieldSep = strdup(fs))) {
1099 if (!settings->quiet)
1100 fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
1103 case 'g': /* \g means send query */
1105 settings->gfname = NULL;
1106 else if (!(settings->gfname = strdup(optarg))) {
1112 case 'h': /* help */
1117 case 'i': /* \i is include file */
1122 fprintf(stderr, "\\i must be followed by a file name\n");
1125 if ((fd = fopen(optarg, "r")) == NULL) {
1126 fprintf(stderr, "file named %s could not be opened\n", optarg);
1129 MainLoop(settings, fd);
1133 case 'l': /* \l is list database */
1134 listAllDbs(settings);
1137 if (toggle(settings, &settings->opt.html3, "HTML3.0 tabular output"))
1138 settings->opt.standard = 0;
1141 setFout(settings, optarg);
1145 fputs(query, stdout);
1146 fputc('\n', stdout);
1149 case 'q': /* \q is quit */
1152 case 'r': /* reset(clear) the buffer */
1154 if (!settings->quiet)
1155 fprintf(stderr, "buffer reset(cleared)\n");
1157 case 's': /* \s is save history to a file */
1159 optarg = "/dev/tty";
1160 if (write_history(optarg) != 0)
1161 fprintf(stderr, "cannot write history to %s\n", optarg);
1163 case 'm': /* monitor like type-setting */
1164 if (toggle(settings, &settings->opt.standard, "standard SQL separaters and padding")) {
1165 settings->opt.html3 = settings->opt.expanded = 0;
1166 settings->opt.align = settings->opt.header = 1;
1167 if (settings->opt.fieldSep)
1168 free(settings->opt.fieldSep);
1169 settings->opt.fieldSep = strdup("|");
1170 if (!settings->quiet)
1171 fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
1173 if (settings->opt.fieldSep)
1174 free(settings->opt.fieldSep);
1175 settings->opt.fieldSep = strdup(DEFAULT_FIELD_SEP);
1176 if (!settings->quiet)
1177 fprintf(stderr, "field separater changed to '%s'\n", settings->opt.fieldSep);
1180 case 't': /* toggle headers */
1181 toggle(settings, &settings->opt.header, "output headings and row count");
1183 case 'T': /* define html <table ...> option */
1184 if (settings->opt.tableOpt)
1185 free(settings->opt.tableOpt);
1187 settings->opt.tableOpt = NULL;
1188 else if (!(settings->opt.tableOpt = strdup(optarg))) {
1194 toggle(settings, &settings->opt.expanded, "expanded table representation");
1200 case '?': /* \? is help */
1201 slashUsage(settings);
1209 * MainLoop: main processing loop for reading lines of input and sending them
1212 * this loop is re-entrant. May be called by \i command which reads input from
1215 * db_ptr must be initialized and set
1219 MainLoop(PsqlSettings * settings, FILE * source)
1221 char *line; /* line of input */
1222 int len; /* length of the line */
1223 char query[MAX_QUERY_BUFFER]; /* multi-line query storage */
1224 int successResult = 1;
1225 int slashCmdStatus = 0;
1227 * slashCmdStatus can be: 0 - send currently constructed query to backend
1228 * (i.e. we got a \g) 1 - skip processing of this line, continue building
1229 * up query 2 - terminate processing of this query entirely 3 - new query
1233 bool querySent = false;
1235 READ_ROUTINE GetNextLine;
1237 /* We've reached the end of our command input. */
1240 bool was_bslash; /* backslash */
1245 interactive = ((source == stdin) && !settings->notty);
1246 #define PROMPT "=> "
1248 if (settings->prompt)
1249 free(settings->prompt);
1251 malloc(strlen(PQdb(settings->db)) + strlen(PROMPT) + 1);
1252 if (settings->quiet)
1253 settings->prompt[0] = '\0';
1255 sprintf(settings->prompt, "%s%s", PQdb(settings->db), PROMPT);
1256 if (settings->useReadline) {
1258 GetNextLine = gets_readline;
1260 GetNextLine = gets_noreadline;
1262 GetNextLine = gets_fromFile;
1267 slashCmdStatus = -1; /* set default */
1269 /* main loop for getting queries and executing them */
1271 if (slashCmdStatus == 3) {
1272 line = strdup(query);
1275 line = GetNextLine(settings->prompt, source);
1276 if (interactive && settings->useReadline && line != NULL)
1277 add_history(line); /* save non-empty lines in history */
1282 if (line == NULL) { /* No more input. Time to quit */
1283 printf("EOF\n"); /* Goes on prompt line */
1286 if (!interactive && !settings->singleStep && !settings->quiet)
1287 fprintf(stderr, "%s\n", line);
1289 /* remove whitespaces on the right, incl. \n's */
1290 line = rightTrim(line);
1292 if (line[0] == '\0') {
1299 if (settings->singleLineMode) {
1300 SendQuery(&success, settings, line, false, false, 0);
1301 successResult &= success;
1308 for (i = 0; i < len; i++) {
1309 if (!in_quote && line[i] == '\\') {
1310 char hold_char = line[i];
1313 if (query_start[0] != '\0') {
1314 if (query[0] != '\0') {
1315 strcat(query, "\n");
1316 strcat(query, query_start);
1318 strcpy(query, query_start);
1320 line[i] = hold_char;
1321 query_start = line + i;
1322 break; /* handle command */
1324 if (querySent && !isspace(line[i])) {
1328 if (!in_quote && was_dash && line[i] == '-') {
1329 /* print comment at top of query */
1330 if (settings->singleStep)
1331 fprintf(stdout, "%s\n", line + i - 1);
1332 line[i - 1] = '\0'; /* remove comment */
1337 if (!in_quote && !paren_level &&
1339 char hold_char = line[i + 1];
1342 if (query_start[0] != '\0') {
1343 if (query[0] != '\0') {
1344 strcat(query, "\n");
1345 strcat(query, query_start);
1347 strcpy(query, query_start);
1349 SendQuery(&success, settings, query, false, false, 0);
1350 successResult &= success;
1351 line[i + 1] = hold_char;
1352 query_start = line + i + 1;
1357 else if (line[i] == '\\')
1359 else if (line[i] == '\'')
1361 else if (!in_quote && line[i] == '(')
1363 else if (!in_quote && paren_level && line[i] == ')')
1365 else if (!in_quote && line[i] == '-')
1370 slashCmdStatus = -1;
1371 /* slash commands have to be on their own line */
1372 if (!in_quote && query_start[0] == '\\') {
1373 slashCmdStatus = HandleSlashCmds(settings,
1376 if (slashCmdStatus == 1) {
1380 if (slashCmdStatus == 2) {
1384 } else if (strlen(query) + strlen(query_start) > MAX_QUERY_BUFFER) {
1385 fprintf(stderr, "query buffer max length of %d exceeded\n",
1387 fprintf(stderr, "query line ignored\n");
1389 if (query_start[0] != '\0') {
1391 if (query[0] != '\0') {
1392 strcat(query, "\n");
1393 strcat(query, query_start);
1395 strcpy(query, query_start);
1399 if (slashCmdStatus == 0) {
1400 SendQuery(&success, settings, query, false, false, 0);
1401 successResult &= success;
1404 free(line); /* free storage malloc'd by GetNextLine */
1407 return successResult;
1411 main(int argc, char **argv)
1413 extern char *optarg;
1416 char *dbname = NULL;
1419 char *qfilename = NULL;
1420 char errbuf[ERROR_MSG_LENGTH];
1422 PsqlSettings settings;
1424 char *singleQuery = NULL;
1426 bool listDatabases = 0;
1427 int successResult = 1;
1428 bool singleSlashCmd = 0;
1431 memset(&settings, 0, sizeof settings);
1432 settings.opt.align = 1;
1433 settings.opt.header = 1;
1434 settings.queryFout = stdout;
1435 settings.opt.fieldSep = strdup(DEFAULT_FIELD_SEP);
1436 settings.opt.pager = 1;
1437 if (!isatty(0) || !isatty(1))
1438 settings.quiet = settings.notty = 1;
1441 settings.useReadline = 1;
1444 while ((c = getopt(argc, argv, "Aa:c:d:ef:F:lh:Hnso:p:qStT:x")) != EOF) {
1447 settings.opt.align = 0;
1450 fe_setauthsvc(optarg, errbuf);
1453 singleQuery = optarg;
1454 if (singleQuery[0] == '\\') {
1462 settings.echoQuery = 1;
1468 settings.opt.fieldSep = optarg;
1477 settings.opt.html3 = 1;
1480 settings.useReadline = 0;
1483 setFout(&settings, optarg);
1492 settings.singleStep = 1;
1495 settings.singleLineMode = 1;
1498 settings.opt.header = 0;
1501 settings.opt.tableOpt = optarg;
1504 settings.opt.expanded = 1;
1511 /* if we still have an argument, use it as the database name */
1512 if (argc - optind == 1)
1513 dbname = argv[optind];
1516 dbname = "template1";
1518 settings.db = PQsetdb(host, port, NULL, NULL, dbname);
1519 dbname = PQdb(settings.db);
1521 if (PQstatus(settings.db) == CONNECTION_BAD) {
1522 fprintf(stderr, "Connection to database '%s' failed.\n", dbname);
1523 fprintf(stderr, "%s", PQerrorMessage(settings.db));
1526 if (listDatabases) {
1527 exit(listAllDbs(&settings));
1529 if (!settings.quiet && !singleQuery && !qfilename) {
1530 printf("Welcome to the POSTGRES95 interactive sql monitor:\n");
1531 printf(" Please read the file COPYRIGHT for copyright terms "
1532 "of POSTGRES95\n\n");
1533 printf(" type \\? for help on slash commands\n");
1534 printf(" type \\q to quit\n");
1535 printf(" type \\g or terminate with semicolon to execute query\n");
1536 printf(" You are currently connected to the database: %s\n\n", dbname);
1538 if (qfilename || singleSlashCmd) {
1540 * read in a file full of queries instead of reading in queries
1545 if (singleSlashCmd) {
1546 /* Not really a query, but "Do what I mean, not what I say." */
1549 line = malloc(strlen(qfilename) + 5);
1550 sprintf(line, "\\i %s", qfilename);
1552 HandleSlashCmds(&settings, line, "");
1555 bool success; /* The query succeeded at the backend */
1556 SendQuery(&success, &settings, singleQuery, false, false, 0);
1557 successResult = success;
1559 successResult = MainLoop(&settings, stdin);
1562 PQfinish(settings.db);
1564 return !successResult;
1567 #define COPYBUFSIZ 8192
1570 handleCopyOut(PGresult * res, bool quiet, FILE * copystream)
1573 char copybuf[COPYBUFSIZ];
1576 copydone = false; /* Can't be done; haven't started. */
1579 ret = PQgetline(res->conn, copybuf, COPYBUFSIZ);
1581 if (copybuf[0] == '\\' &&
1582 copybuf[1] == '.' &&
1583 copybuf[2] == '\0') {
1584 copydone = true; /* don't print this... */
1586 fputs(copybuf, copystream);
1592 fputc('\n', copystream);
1600 PQendcopy(res->conn);
1606 handleCopyIn(PGresult * res, const bool mustprompt, FILE * copystream)
1608 bool copydone = false;
1611 char copybuf[COPYBUFSIZ];
1617 fputs("Enter info followed by a newline\n", stdout);
1618 fputs("End with a backslash and a "
1619 "period on a line by itself.\n", stdout);
1621 while (!copydone) { /* for each input line ... */
1623 fputs(">> ", stdout);
1628 while (!linedone) { /* for each buffer ... */
1630 buflen = COPYBUFSIZ;
1631 for (; buflen > 1 &&
1632 !(linedone = (c = getc(copystream)) == '\n' || c == EOF);
1637 PQputline(res->conn, "\\.");
1642 PQputline(res->conn, copybuf);
1644 if (!strcmp(copybuf, "\\.")) {
1650 PQputline(res->conn, "\n");
1652 PQendcopy(res->conn);
1658 * try to open fname and return a FILE *, if it fails, use stdout, instead
1662 setFout(PsqlSettings * ps, char *fname)
1664 if (ps->queryFout && ps->queryFout != stdout) {
1666 pclose(ps->queryFout);
1668 fclose(ps->queryFout);
1671 ps->queryFout = stdout;
1673 if (*fname == '|') {
1674 signal(SIGPIPE, SIG_IGN);
1675 ps->queryFout = popen(fname + 1, "w");
1678 ps->queryFout = fopen(fname, "w");
1681 if (!ps->queryFout) {
1683 ps->queryFout = stdout;
1686 return ps->queryFout;