postgres/contrib/pg_dumplo/lo_import.c
2000-06-15 19:05:22 +00:00

90 lines
2.0 KiB
C

#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <errno.h>
#include <time.h>
#include <libpq-fe.h>
#include <libpq/libpq-fs.h>
#include "pg_dumplo.h"
extern int errno;
void
pglo_import(LODumpMaster *pgLO)
{
LOlist loa;
long new_oid;
char tab[MAX_TABLE_NAME], attr[MAX_ATTR_NAME],
path[BUFSIZ], lo_path[BUFSIZ],
Qbuff[QUERY_BUFSIZ];
while(fgets(Qbuff, QUERY_BUFSIZ, pgLO->index)) {
if (*Qbuff == '#')
continue;
if (! pgLO->remove && ! pgLO->quiet)
printf(Qbuff);
sscanf(Qbuff, "%ld\t%s\t%s\t%s\n", &loa.lo_oid, tab, attr, path);
loa.lo_table = tab;
loa.lo_attr = attr;
sprintf(lo_path, "%s/%s", pgLO->space, path);
/* ----------
* Import LO
* ----------
*/
if ((new_oid = lo_import(pgLO->conn, lo_path)) <= 0) {
fprintf(stderr, "%s: %s\n", progname, PQerrorMessage(pgLO->conn));
PQexec(pgLO->conn, "ROLLBACK");
fprintf(stderr, "\n%s: ROLLBACK\n", progname);
exit(RE_ERROR);
}
if (pgLO->remove) {
notice(pgLO, FALSE);
if (lo_unlink(pgLO->conn, (Oid) loa.lo_oid) < 0)
fprintf(stderr, "%s: can't remove LO: %ld (%s)\n",
progname, loa.lo_oid, PQerrorMessage(pgLO->conn));
else if (!pgLO->quiet)
printf("remove old %ld and create new %ld\n",
loa.lo_oid, new_oid);
notice(pgLO, TRUE);
}
pgLO->counter++;
/* ----------
* UPDATE oid in tab
* ----------
*/
sprintf(Qbuff, "UPDATE %s SET %s=%ld WHERE %s=%ld",
loa.lo_table, loa.lo_attr, new_oid, loa.lo_attr, loa.lo_oid);
/*fprintf(stderr, Qbuff);*/
pgLO->res = PQexec(pgLO->conn, Qbuff);
if (!pgLO->res && PQresultStatus(pgLO->res) != PGRES_COMMAND_OK) {
fprintf(stderr, "%s: %s\n",progname, PQerrorMessage(pgLO->conn));
PQclear(pgLO->res);
PQexec(pgLO->conn, "ROLLBACK");
fprintf(stderr, "\n%s: ROLLBACK\n", progname);
exit(RE_ERROR);
}
}
}