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#! /usr/bin/perl
#
# Copyright (c) 2001-2003, PostgreSQL Global Development Group
#
# $PostgreSQL: pgsql/src/backend/utils/mb/Unicode/UCS_to_EUC_TW.pl,v 1.4 2003/11/29 22:40:01 pgsql Exp $
#
# Generate UTF-8 <--> EUC_TW code conversion tables from
# map files provided by Unicode organization.
# Unfortunately it is prohibited by the organization
# to distribute the map files. So if you try to use this script,
# you have to obtain CNS11643.TXT from
# the organization's ftp site.
#
# CNS11643.TXT format:
# CNS11643 code in hex (3 bytes)
# (I guess the first byte means the plane No.)
# UCS-2 code in hex
# # and Unicode name (not used in this script)
require "ucs2utf.pl";
# first generate UTF-8 --> EUC_TW table
$in_file = "CNS11643.TXT";
open( FILE, $in_file ) || die( "cannot open $in_file" );
while( <FILE> ){
chop;
if( /^#/ ){
next;
}
( $c, $u, $rest ) = split;
$ucs = hex($u);
$code = hex($c);
if( $code >= 0x80 && $ucs >= 0x0080 ){
$utf = &ucs2utf($ucs);
if( $array{ $utf } ne "" ){
printf STDERR "Warning: duplicate unicode: %04x\n",$ucs;
next;
}
$count++;
$plane = ($code & 0x1f0000) >> 16;
if ($plane > 16) {
printf STDERR "Warning: invalid plane No.$plane. ignored\n";
next;
}
if ($plane == 1) {
$array{ $utf } = (($code & 0xffff) | 0x8080);
} else {
$array{ $utf } = (0x8ea00000 + ($plane << 16)) | (($code & 0xffff) | 0x8080);
}
}
}
close( FILE );
#
# first, generate UTF8 --> EUC_TW table
#
$file = "utf8_to_euc_tw.map";
open( FILE, "> $file" ) || die( "cannot open $file" );
print FILE "static pg_utf_to_local ULmapEUC_TW[ $count ] = {\n";
for $index ( sort {$a <=> $b} keys( %array ) ){
$code = $array{ $index };
$count--;
if( $count == 0 ){
printf FILE " {0x%04x, 0x%04x}\n", $index, $code;
} else {
printf FILE " {0x%04x, 0x%04x},\n", $index, $code;
}
}
print FILE "};\n";
close(FILE);
#
# then generate EUC_JP --> UTF8 table
#
reset 'array';
open( FILE, $in_file ) || die( "cannot open $in_file" );
while( <FILE> ){
chop;
if( /^#/ ){
next;
}
( $c, $u, $rest ) = split;
$ucs = hex($u);
$code = hex($c);
if( $code >= 0x80 && $ucs >= 0x0080 ){
$utf = &ucs2utf($ucs);
if( $array{ $code } ne "" ){
printf STDERR "Warning: duplicate code: %04x\n",$ucs;
next;
}
$count++;
$plane = ($code & 0x1f0000) >> 16;
if ($plane > 16) {
printf STDERR "Warning: invalid plane No.$plane. ignored\n";
next;
}
if ($plane == 1) {
$c = (($code & 0xffff) | 0x8080);
$array{ $c } = $utf;
$count++;
}
$c = (0x8ea00000 + ($plane << 16)) | (($code & 0xffff) | 0x8080);
$array{ $c } = $utf;
}
}
close( FILE );
$file = "euc_tw_to_utf8.map";
open( FILE, "> $file" ) || die( "cannot open $file" );
print FILE "static pg_local_to_utf LUmapEUC_TW[ $count ] = {\n";
for $index ( sort {$a <=> $b} keys( %array ) ){
$utf = $array{ $index };
$count--;
if( $count == 0 ){
printf FILE " {0x%04x, 0x%04x}\n", $index, $utf;
} else {
printf FILE " {0x%04x, 0x%04x},\n", $index, $utf;
}
}
print FILE "};\n";
close(FILE);
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