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93 lines
2.6 KiB
Perl
93 lines
2.6 KiB
Perl
#!/usr/bin/perl
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# parse-mozilla-encoding-table.pl, version 0.6
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#
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# Script to deassemble existing Mozilla *.uf or *.ut files
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# back to source conversion tables.
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# by Anthony Fok <anthony@thizlinux.com>, ThizLinux Laboratory Ltd., 2002/11/27
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# License: GNU General Public License, version 2 or newer
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#
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# Used for verifying HKSCS-1999 hkscs.uf and hkscs.ut so that I can make
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# new ones for HKSCS-2001. This script is quick-and-dirty and not very
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# robust, so if the debug output of fromu/tou ever changes, this script
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# will need to be modified too. :-)
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my %data = ();
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my $mappingPos = 0;
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my $filename = shift;
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my $mode;
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if ($filename =~ /\.(ut|uf)$/) {
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print $filename, "\n";
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$mode = $1;
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} else {
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die;
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}
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open(INFILE, "<$filename") or die;
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# Quick-and-dirty routine to populate %data
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while (<INFILE>) {
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if (/^Begin of Item ([[:xdigit:]]+)/) {
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die if defined($itemId) and hex($itemId) + 1 != hex($1);
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$itemId = $1;
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<INFILE> =~ /Format ([012])/ or die;
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$format = $1;
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<INFILE> =~ /srcBegin = ([[:xdigit:]]+)/ or die;
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$srcBegin = $1;
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if ($format == 0) { # Range
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<INFILE> =~ /srcEnd = ([[:xdigit:]]+)/ or die;
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$srcEnd = $1;
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<INFILE> =~ /destBegin = ([[:xdigit:]]+)/ or die;
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$destBegin = $1;
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for ($i = hex($srcBegin); $i <= hex($srcEnd); $i++) {
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$data{sprintf("%04X",$i)} = sprintf("%04X",
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hex($destBegin) + $i - hex($srcBegin));
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}
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<INFILE> =~ /^End of Item $itemId\s*$/ or die;
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}
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elsif ($format == 1) { # Mapping
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<INFILE> =~ /srcEnd = ([[:xdigit:]]+)/ or die;
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$srcEnd = $1;
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<INFILE> =~ /mappingOffset = ([[:xdigit:]]+)/ or die;
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$mappingOffset = hex($1);
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die unless $mappingOffset == $mappingPos;
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<INFILE> =~ /Mapping =\s*$/ or die;
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until ($_ = <INFILE>, /^End of Item/) {
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chop;
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for $i (split ' ') {
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$key = sprintf("%04X", hex($srcBegin) - $mappingOffset + $mappingPos++);
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next if $i eq "FFFD";
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if (defined($data{$key})) {
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print "Error: doubly defined. $key was $data{$key}, and now $i.\n";
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} else {
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$data{$key} = $i;
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}
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}
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}
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die unless $mappingPos - $mappingOffset == hex($srcEnd) - hex($srcBegin) + 1;
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/^End of Item $itemId\s*$/ or die;
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}
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else { # Single ($format == 2)
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<INFILE> =~ /destBegin = ([[:xdigit:]]+)/ or die;
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$destBegin = $1;
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$data{$srcBegin} = $destBegin;
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<INFILE> =~ /^End of Item $itemId\s*$/ or die;
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}
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}
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}
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# Generate conversion table
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for $key (sort keys %data) {
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if ($mode eq "ut") {
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print "0x$key\t0x$data{$key}\n";
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} elsif ($mode eq "uf") {
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print "0x$data{$key}\t0x$key\n";
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} else {
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die;
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}
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}
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close INFILE;
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