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308 lines
7.0 KiB
C
308 lines
7.0 KiB
C
/* -------------------------------------------------------------------------
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* pg_dumplo
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*
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* $PostgreSQL: pgsql/contrib/pg_dumplo/main.c,v 1.22 2004/11/28 23:49:49 tgl Exp $
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*
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* Karel Zak 1999-2000
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* -------------------------------------------------------------------------
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*/
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#include "postgres_fe.h"
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#include <errno.h>
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#include <unistd.h>
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#include "libpq-fe.h"
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#include "libpq/libpq-fs.h"
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#include "pg_dumplo.h"
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#ifndef HAVE_STRDUP
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#include "strdup.h"
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#endif
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#include "getopt_long.h"
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#ifndef HAVE_INT_OPTRESET
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int optreset;
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#endif
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char *progname = NULL;
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int main(int argc, char **argv);
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static void usage(void);
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static void parse_lolist(LODumpMaster * pgLO);
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/*-----
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* The mother of all C functions
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*-----
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*/
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int
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main(int argc, char **argv)
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{
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LODumpMaster _pgLO,
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*pgLO = &_pgLO;
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char *pwd = NULL;
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pgLO->argv = argv;
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pgLO->argc = argc;
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pgLO->action = 0;
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pgLO->lolist = NULL;
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pgLO->user = NULL;
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pgLO->db = NULL;
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pgLO->host = NULL;
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pgLO->port = NULL;
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pgLO->space = NULL;
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pgLO->index = NULL;
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pgLO->remove = FALSE;
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pgLO->quiet = FALSE;
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pgLO->counter = 0;
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pgLO->lolist_start = 0;
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progname = argv[0];
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/*
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* Parse ARGV
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*/
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if (argc > 1)
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{
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int arg;
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extern int optind;
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int l_index = 0;
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static struct option l_opt[] = {
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{"help", no_argument, 0, 'h'},
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{"user", required_argument, 0, 'u'},
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{"pwd", required_argument, 0, 'p'},
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{"db", required_argument, 0, 'd'},
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{"host", required_argument, 0, 'h'},
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{"port", required_argument, 0, 'o'},
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{"space", required_argument, 0, 's'},
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{"import", no_argument, 0, 'i'},
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{"export", no_argument, 0, 'e'},
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{"remove", no_argument, 0, 'r'},
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{"quiet", no_argument, 0, 'q'},
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{"all", no_argument, 0, 'a'},
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{"show", no_argument, 0, 'w'},
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{NULL, 0, 0, 0}
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};
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while ((arg = getopt_long(argc, argv, "?aeho:u:p:qd:l:t:irs:w", l_opt, &l_index)) != -1)
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{
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switch (arg)
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{
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case '?':
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case 'h':
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usage();
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exit(RE_OK);
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case 'u':
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pgLO->user = strdup(optarg);
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break;
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case 't':
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pgLO->host = strdup(optarg);
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break;
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case 'o':
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pgLO->port = strdup(optarg);
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break;
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case 'p':
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pwd = strdup(optarg);
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break;
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case 'd':
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pgLO->db = strdup(optarg);
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break;
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case 's':
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pgLO->space = strdup(optarg);
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break;
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case 'i':
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pgLO->action = ACTION_IMPORT;
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break;
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case 'l':
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pgLO->action = ACTION_EXPORT_ATTR;
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pgLO->lolist_start = optind - 1;
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parse_lolist(pgLO);
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break;
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case 'e':
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case 'a':
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pgLO->action = ACTION_EXPORT_ALL;
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break;
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case 'w':
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pgLO->action = ACTION_SHOW;
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break;
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case 'r':
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pgLO->remove = TRUE;
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break;
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case 'q':
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pgLO->quiet = TRUE;
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break;
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default:
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fprintf(stderr, "%s: bad arg -%c\n", progname, arg);
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usage();
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exit(RE_ERROR);
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}
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}
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}
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else
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{
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usage();
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exit(RE_ERROR);
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}
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/*
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* Check space
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*/
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if (pgLO->space==NULL && pgLO->action != ACTION_SHOW)
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{
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if (!(pgLO->space = getenv("PWD")))
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pgLO->space = ".";
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}
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if (!pgLO->action)
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{
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fprintf(stderr, "%s: What do you want - export or import?\n", progname);
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exit(RE_ERROR);
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}
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/*
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* Make connection
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*/
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pgLO->conn = PQsetdbLogin(pgLO->host, pgLO->port, NULL, NULL, pgLO->db,
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pgLO->user, pwd);
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if (PQstatus(pgLO->conn) == CONNECTION_BAD)
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{
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fprintf(stderr, "%s (connection): %s\n", progname, PQerrorMessage(pgLO->conn));
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exit(RE_ERROR);
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}
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pgLO->host = PQhost(pgLO->conn) ? PQhost(pgLO->conn) : "localhost";
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pgLO->db = PQdb(pgLO->conn);
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pgLO->user = PQuser(pgLO->conn);
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/*
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* Init index file
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*/
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if (pgLO->action != ACTION_SHOW)
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index_file(pgLO);
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PQexec(pgLO->conn, "SET search_path = public");
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PQexec(pgLO->conn, "BEGIN");
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switch (pgLO->action)
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{
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case ACTION_SHOW:
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case ACTION_EXPORT_ALL:
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load_lolist(pgLO);
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/* FALL THROUGH */
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case ACTION_EXPORT_ATTR:
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pglo_export(pgLO);
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if (!pgLO->quiet)
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{
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if (pgLO->action == ACTION_SHOW)
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printf("\nDatabase '%s' contains %d large objects.\n\n", pgLO->db, pgLO->counter);
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else
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printf("\nExported %d large objects.\n\n", pgLO->counter);
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}
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break;
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case ACTION_IMPORT:
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pglo_import(pgLO);
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if (!pgLO->quiet)
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printf("\nImported %d large objects.\n\n", pgLO->counter);
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break;
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}
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PQexec(pgLO->conn, "COMMIT");
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PQfinish(pgLO->conn);
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if (pgLO->action != ACTION_SHOW)
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fclose(pgLO->index);
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exit(RE_OK);
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}
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static void
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parse_lolist(LODumpMaster * pgLO)
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{
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LOlist *ll;
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char **d, *loc, *loc2,
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buff[MAX_SCHEMA_NAME + MAX_TABLE_NAME + MAX_ATTR_NAME + 3];
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pgLO->lolist = (LOlist *) malloc(pgLO->argc * sizeof(LOlist));
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if (!pgLO->lolist)
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{
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fprintf(stderr, "%s: can't allocate memory\n", progname);
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exit(RE_ERROR);
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}
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for (d = pgLO->argv + pgLO->lolist_start, ll = pgLO->lolist;
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*d != NULL;
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d++, ll++)
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{
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strncpy(buff, *d, MAX_SCHEMA_NAME + MAX_TABLE_NAME + MAX_ATTR_NAME + 2);
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if ((loc = strchr(buff, '.')) == NULL || *(loc+1)=='\0')
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{
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fprintf(stderr, "%s: '%s' is bad 'table.attr' or 'schema.table.attr'\n", progname, buff);
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exit(RE_ERROR);
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}
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loc2 = strchr(loc+1, '.');
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*loc = '\0';
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if (loc2)
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{
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/* "schema.table.attr"
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*/
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*loc2 = '\0';
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ll->lo_schema = strdup(buff);
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ll->lo_table = strdup(loc+1);
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ll->lo_attr = strdup(loc2+1);
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}
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else
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{
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ll->lo_schema = strdup("public");
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ll->lo_table = strdup(buff);
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ll->lo_attr = strdup(loc+1);
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}
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}
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ll++;
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ll->lo_table = ll->lo_attr = (char *) NULL;
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}
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static void
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usage(void)
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{
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printf("\npg_dumplo %s - PostgreSQL large objects dump\n", PG_VERSION);
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puts("pg_dumplo [option]\n\n"
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"-h --help this help\n"
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"-u --user=<username> username for connection to server\n"
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"-p --password=<password> password for connection to server\n"
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"-d --db=<database> database name\n"
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"-t --host=<hostname> server hostname\n"
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"-o --port=<port> database server port (default: 5432)\n"
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"-s --space=<dir> directory with dump tree (for export/import)\n"
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"-i --import import large obj dump tree to DB\n"
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"-e --export export (dump) large obj to dump tree\n"
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"-l <schema.table.attr ...> dump attribute (columns) with LO to dump tree\n"
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"-a --all dump all LO in DB (default)\n"
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"-r --remove if is set '-i' try remove old LO\n"
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"-q --quiet run quietly\n"
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"-w --show not dump, but show all LO in DB\n"
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"\n"
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"Example (dump): pg_dumplo -d my_db -s /my_dump/dir -l t1.a t1.b t2.a\n"
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" pg_dumplo -a -d my_db -s /my_dump/dir\n"
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"Example (import): pg_dumplo -i -d my_db -s /my_dump/dir\n"
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"Example (show): pg_dumplo -w -d my_db\n\n"
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"Note: * option '-l' must be last option!\n"
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" * default schema is \"public\"\n"
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" * option '-i' without option '-r' make new large obj in DB\n"
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" not rewrite old, the '-i' UPDATE oid numbers in table.attr only!\n"
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" * if option -s is not set, pg_dumplo uses $PWD or \".\"\n"
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); /* puts() */
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}
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