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psql: complain if pg_dump custom-format is detected

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Apparently, this is a very common mistake for users to make; it is
better to have it fail reasonably rather than throw potentially a large
number of errors.  Since we have a magic string at the start of the
file, we can detect the case easily and there's no other possible useful
behavior anyway.

Author: Craig Ringer
This commit is contained in:
Alvaro Herrera 2014-10-24 07:14:09 -03:00
parent b01a4f6838
commit 3c2aa0c6f2
1 changed files with 12 additions and 0 deletions
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12
src/bin/psql/mainloop.c
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@ -175,6 +175,18 @@ MainLoop(FILE *source)
if (pset.lineno == 1 && pset.encoding == PG_UTF8 && strncmp(line, "\xef\xbb\xbf", 3) == 0)
memmove(line, line + 3, strlen(line + 3) + 1);
/* Detect attempts to run custom-format dumps as SQL scripts */
if (pset.lineno == 1 && !pset.cur_cmd_interactive &&
strncmp(line, "PGDMP", 5) == 0)
{
free(line);
puts(_("The input is a PostgreSQL custom-format dump.\n"
"Use the pg_restore command-line client to restore this dump to a database.\n"));
fflush(stdout);
successResult = EXIT_FAILURE;
break;
}
/* nothing left on line? then ignore */
if (line[0] == '\0' && !psql_scan_in_quote(scan_state))
{