80 lines
1.6 KiB
Perl
80 lines
1.6 KiB
Perl
# encodings.pl - Download IANA text and compute alias list.
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# Assumes you are running this program from gnu/gcj/convert/.
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# Output suitable for direct inclusion in IOConverter.java.
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# Map IANA canonical names onto our canonical names.
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%map = (
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'ANSI_X3.4-1968' => 'ASCII',
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'ISO_8859-1:1987' => '8859_1',
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'UTF-8' => 'UTF8',
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'Shift_JIS' => 'SJIS',
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'Extended_UNIX_Code_Packed_Format_for_Japanese' => 'EUCJIS',
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'UTF16-LE' => 'UnicodeLittle',
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'UTF16-BE' => 'UnicodeBig'
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);
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if ($ARGV[0] eq '')
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{
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$file = 'character-sets';
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if (! -f $file)
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{
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# Too painful to figure out how to get Perl to do it.
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system 'wget -o .wget-log http://www.iana.org/assignments/character-sets';
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}
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}
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else
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{
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$file = $ARGV[0];
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}
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# Include canonical names in the output.
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foreach $key (keys %map)
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{
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$output{lc ($key)} = $map{$key};
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}
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open (INPUT, "< $file") || die "couldn't open $file: $!";
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$body = 0;
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$current = '';
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while (<INPUT>)
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{
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chop;
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$body = 1 if /^Name:/;
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next unless $body;
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if (/^$/)
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{
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$current = '';
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next;
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}
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($type, $name) = split (/\s+/);
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# Encoding names are case-insensitive. We do all processing on
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# the lower-case form.
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my $lower = lc ($name);
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if ($type eq 'Name:')
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{
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$current = $map{$name};
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if ($current)
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{
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$output{$lower} = $current;
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}
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}
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elsif ($type eq 'Alias:')
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{
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# The IANA list has some ugliness.
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if ($name ne '' && $lower ne 'none' && $current)
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{
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$output{$lower} = $current;
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}
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}
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}
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close (INPUT);
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foreach $key (sort keys %output)
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{
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print " hash.put (\"$key\", \"$output{$key}\");\n";
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}
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