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#! /usr/bin/perl
#
# Copyright (c) 2007-2021, PostgreSQL Global Development Group
#
# src/backend/utils/mb/Unicode/UCS_to_GB18030.pl
#
# Generate UTF-8 <--> GB18030 code conversion tables from
# "gb-18030-2000.xml", obtained from
# http://source.icu-project.org/repos/icu/data/trunk/charset/data/xml/
#
# The lines we care about in the source file look like
# <a u="009A" b="81 30 83 36"/>
# where the "u" field is the Unicode code point in hex,
# and the "b" field is the hex byte sequence for GB18030
use strict;
use warnings;
use convutils;
my $this_script = 'src/backend/utils/mb/Unicode/UCS_to_GB18030.pl';
# Read the input
my $in_file = "gb-18030-2000.xml";
open(my $in, '<', $in_file) || die("cannot open $in_file");
my @mapping;
while (<$in>)
{
next if (!m/<a u="([0-9A-F]+)" b="([0-9A-F ]+)"/);
my ($u, $c) = ($1, $2);
$c =~ s/ //g;
my $ucs = hex($u);
my $code = hex($c);
if ($code >= 0x80 && $ucs >= 0x0080)
{
push @mapping,
{
ucs => $ucs,
code => $code,
direction => BOTH,
f => $in_file,
l => $.
};
}
}
close($in);
print_conversion_tables($this_script, "GB18030", \@mapping);
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