e3d7de6b99
UNICODE => UTF8 ALT => WIN866 WIN => WIN1251 TCVN => WIN1258 The old codes continue to work.
114 lines
2.7 KiB
Perl
114 lines
2.7 KiB
Perl
#! /usr/bin/perl
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#
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# Copyright (c) 2001-2005, PostgreSQL Global Development Group
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#
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# $PostgreSQL: pgsql/src/backend/utils/mb/Unicode/UCS_to_WINX.pl,v 1.6 2005/03/07 04:30:52 momjian Exp $
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#
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# Generate UTF-8 <--> WINX code conversion tables from
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# map files provided by Unicode organization.
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# Unfortunately it is prohibited by the organization
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# to distribute the map files. So if you try to use this script,
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# you have to obtain "8859-[2-5].TXT" from the organization's ftp site.
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# We assume the file include three tab-separated columns:
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# ISO/IEC 8859 code in hex
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# UCS-2 code in hex
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# # and Unicode name (not used in this script)
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require "ucs2utf.pl";
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%filename = ('WIN1256'=>'CP1256.TXT',
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'WIN1258'=>'CP1258.TXT',
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'WIN874'=>'CP874.TXT',
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'WIN1250'=>'CP1250.TXT');
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@charsets = ('WIN1256','WIN1258','WIN874','WIN1250');
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foreach $charset (@charsets) {
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#
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# first, generate UTF8->ISO8859 table
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#
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$in_file = $filename{$charset};
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open( FILE, $in_file ) || die( "cannot open $in_file" );
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reset 'array';
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while( <FILE> ){
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chop;
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if( /^#/ ){
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next;
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}
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( $c, $u, $rest ) = split;
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$ucs = hex($u);
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$code = hex($c);
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if( $code >= 0x80){
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$utf = &ucs2utf($ucs);
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if( $array{ $utf } ne "" ){
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printf STDERR "Warning: duplicate UTF8: %04x\n",$ucs;
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next;
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}
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$count++;
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$array{ $utf } = $code;
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}
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}
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close( FILE );
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$file = lower("utf8_to_${charset}.map");
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open( FILE, "> $file" ) || die( "cannot open $file" );
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print FILE "static pg_utf_to_local ULmap_${charset}[ $count ] = {\n";
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for $index ( sort {$a <=> $b} keys( %array ) ){
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$code = $array{ $index };
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$count--;
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if( $count == 0 ){
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printf FILE " {0x%04x, 0x%04x}\n", $index, $code;
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} else {
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printf FILE " {0x%04x, 0x%04x},\n", $index, $code;
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}
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}
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print FILE "};\n";
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close(FILE);
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#
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# then generate ISO885->UTF8 table
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#
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open( FILE, $in_file ) || die( "cannot open $in_file" );
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reset 'array';
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while( <FILE> ){
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chop;
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if( /^#/ ){
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next;
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}
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( $c, $u, $rest ) = split;
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$ucs = hex($u);
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$code = hex($c);
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if($code >= 0x80){
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$utf = &ucs2utf($ucs);
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if( $array{ $utf } ne "" ){
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printf STDERR "Warning: duplicate UTF8: %04x\n",$ucs;
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next;
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}
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$count++;
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$array{ $code } = $utf;
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}
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}
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close( FILE );
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$file = lower("${charset}_to_utf8.map");
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open( FILE, "> $file" ) || die( "cannot open $file" );
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print FILE "static pg_local_to_utf LUmap${charset}[ $count ] = {\n";
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for $index ( sort {$a <=> $b} keys( %array ) ){
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$utf = $array{ $index };
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$count--;
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if( $count == 0 ){
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printf FILE " {0x%04x, 0x%04x}\n", $index, $utf;
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} else {
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printf FILE " {0x%04x, 0x%04x},\n", $index, $utf;
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}
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}
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print FILE "};\n";
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close(FILE);
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}
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