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|
#!/usr/bin/perl
#----------------------------------------------------------------------
#
# Generate guc_tables.c from guc_parameters.dat.
#
# Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
# Portions Copyright (c) 1994, Regents of the University of California
#
# src/backend/utils/misc/gen_guc_tables.pl
#
#----------------------------------------------------------------------
use strict;
use warnings FATAL => 'all';
use FindBin;
use lib "$FindBin::RealBin/../../catalog";
use Catalog;
die "Usage: $0 INPUT_FILE OUTPUT_FILE\n" unless @ARGV == 2;
my ($input_fname, $output_fname) = @ARGV;
my $parse = Catalog::ParseData($input_fname);
open my $ofh, '>', $output_fname or die;
print_boilerplate($ofh, $output_fname, 'GUC tables');
print_table($ofh);
close $ofh;
# Adds double quotes and escapes as necessary for C strings.
sub dquote
{
my ($s) = @_;
return q{"} . $s =~ s/"/\\"/gr . q{"};
}
sub validate_guc_entry
{
my ($entry) = @_;
my @required_common =
qw(name type context group short_desc variable boot_val);
my %required_by_type = (
int => [qw(min max)],
real => [qw(min max)],
enum => [qw(options)],
bool => [], # no extra required fields
string => [], # no extra required fields
);
for my $f (@required_common)
{
unless (defined $entry->{$f})
{
die sprintf(
qq{%s:%d: error: entry "%s" is missing required field "%s"\n},
$input_fname, $entry->{line_number},
$entry->{name} // '<unknown>', $f);
}
}
unless (exists $required_by_type{ $entry->{type} })
{
die sprintf(
qq{%s:%d: error: entry "%s" has unrecognized GUC type "%s"\n},
$input_fname, $entry->{line_number},
$entry->{name}, $entry->{type} // '<unknown>');
}
for my $f (@{ $required_by_type{ $entry->{type} } })
{
unless (defined $entry->{$f})
{
die sprintf(
qq{%s:%d: error: entry "%s" of type "%s" is missing required field "%s"\n},
$input_fname, $entry->{line_number}, $entry->{name},
$entry->{type}, $f);
}
}
}
# Print GUC table.
sub print_table
{
my ($ofh) = @_;
my $prev_name = undef;
print $ofh "\n\n";
print $ofh "struct config_generic ConfigureNames[] =\n";
print $ofh "{\n";
foreach my $entry (@{$parse})
{
validate_guc_entry($entry);
if (defined($prev_name) && lc($prev_name) ge lc($entry->{name}))
{
die sprintf(
"entries are not in alphabetical order: \"%s\", \"%s\"\n",
$prev_name, $entry->{name});
}
print $ofh "#ifdef $entry->{ifdef}\n" if $entry->{ifdef};
print $ofh "\t{\n";
printf $ofh "\t\t.name = %s,\n", dquote($entry->{name});
printf $ofh "\t\t.context = %s,\n", $entry->{context};
printf $ofh "\t\t.group = %s,\n", $entry->{group};
printf $ofh "\t\t.short_desc = gettext_noop(%s),\n",
dquote($entry->{short_desc});
printf $ofh "\t\t.long_desc = gettext_noop(%s),\n",
dquote($entry->{long_desc})
if $entry->{long_desc};
printf $ofh "\t\t.flags = %s,\n", $entry->{flags} if $entry->{flags};
printf $ofh "\t\t.vartype = %s,\n", ('PGC_' . uc($entry->{type}));
printf $ofh "\t\t._%s = {\n", $entry->{type};
printf $ofh "\t\t\t.variable = &%s,\n", $entry->{variable};
printf $ofh "\t\t\t.boot_val = %s,\n", $entry->{boot_val};
printf $ofh "\t\t\t.min = %s,\n", $entry->{min}
if $entry->{type} eq 'int' || $entry->{type} eq 'real';
printf $ofh "\t\t\t.max = %s,\n", $entry->{max}
if $entry->{type} eq 'int' || $entry->{type} eq 'real';
printf $ofh "\t\t\t.options = %s,\n", $entry->{options}
if $entry->{type} eq 'enum';
printf $ofh "\t\t\t.check_hook = %s,\n", $entry->{check_hook}
if $entry->{check_hook};
printf $ofh "\t\t\t.assign_hook = %s,\n", $entry->{assign_hook}
if $entry->{assign_hook};
printf $ofh "\t\t\t.show_hook = %s,\n", $entry->{show_hook}
if $entry->{show_hook};
print $ofh "\t\t},\n";
print $ofh "\t},\n";
print $ofh "#endif\n" if $entry->{ifdef};
print $ofh "\n";
$prev_name = $entry->{name};
}
print $ofh "\t/* End-of-list marker */\n";
print $ofh "\t{0}\n";
print $ofh "};\n";
return;
}
sub print_boilerplate
{
my ($fh, $fname, $descr) = @_;
printf $fh <<EOM, $fname, $descr;
/*-------------------------------------------------------------------------
*
* %s
* %s
*
* Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* NOTES
* ******************************
* *** DO NOT EDIT THIS FILE! ***
* ******************************
*
* It has been GENERATED by src/backend/utils/misc/gen_guc_tables.pl
*
*-------------------------------------------------------------------------
*/
EOM
return;
}
|
