1#! /usr/bin/perl 2# 3# Copyright (c) 2007-2020, PostgreSQL Global Development Group 4# 5# src/backend/utils/mb/Unicode/UCS_to_GB18030.pl 6# 7# Generate UTF-8 <--> GB18030 code conversion tables from 8# "gb-18030-2000.xml", obtained from 9# http://source.icu-project.org/repos/icu/data/trunk/charset/data/xml/ 10# 11# The lines we care about in the source file look like 12# <a u="009A" b="81 30 83 36"/> 13# where the "u" field is the Unicode code point in hex, 14# and the "b" field is the hex byte sequence for GB18030 15 16use strict; 17use warnings; 18 19use convutils; 20 21my $this_script = 'src/backend/utils/mb/Unicode/UCS_to_GB18030.pl'; 22 23# Read the input 24 25my $in_file = "gb-18030-2000.xml"; 26 27open(my $in, '<', $in_file) || die("cannot open $in_file"); 28 29my @mapping; 30 31while (<$in>) 32{ 33 next if (!m/<a u="([0-9A-F]+)" b="([0-9A-F ]+)"/); 34 my ($u, $c) = ($1, $2); 35 $c =~ s/ //g; 36 my $ucs = hex($u); 37 my $code = hex($c); 38 if ($code >= 0x80 && $ucs >= 0x0080) 39 { 40 push @mapping, 41 { 42 ucs => $ucs, 43 code => $code, 44 direction => BOTH, 45 f => $in_file, 46 l => $. 47 }; 48 } 49} 50close($in); 51 52print_conversion_tables($this_script, "GB18030", \@mapping); 53