106 lines
2.6 KiB
Perl
106 lines
2.6 KiB
Perl
# $Id$
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package XML::SAX::PurePerl; # NB, not ::EncodingDetect!
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use strict;
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sub encoding_detect {
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my ($parser, $reader) = @_;
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my $error = "Invalid byte sequence at start of file";
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my $data = $reader->data;
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if ($data =~ /^\x00\x00\xFE\xFF/) {
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# BO-UCS4-be
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$reader->move_along(4);
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$reader->set_encoding('UCS-4BE');
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return;
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}
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elsif ($data =~ /^\x00\x00\xFF\xFE/) {
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# BO-UCS-4-2143
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$reader->move_along(4);
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$reader->set_encoding('UCS-4-2143');
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return;
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}
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elsif ($data =~ /^\x00\x00\x00\x3C/) {
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$reader->set_encoding('UCS-4BE');
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return;
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}
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elsif ($data =~ /^\x00\x00\x3C\x00/) {
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$reader->set_encoding('UCS-4-2143');
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return;
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}
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elsif ($data =~ /^\x00\x3C\x00\x00/) {
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$reader->set_encoding('UCS-4-3412');
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return;
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}
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elsif ($data =~ /^\x00\x3C\x00\x3F/) {
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$reader->set_encoding('UTF-16BE');
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return;
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}
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elsif ($data =~ /^\xFF\xFE\x00\x00/) {
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# BO-UCS-4LE
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$reader->move_along(4);
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$reader->set_encoding('UCS-4LE');
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return;
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}
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elsif ($data =~ /^\xFF\xFE/) {
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$reader->move_along(2);
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$reader->set_encoding('UTF-16LE');
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return;
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}
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elsif ($data =~ /^\xFE\xFF\x00\x00/) {
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$reader->move_along(4);
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$reader->set_encoding('UCS-4-3412');
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return;
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}
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elsif ($data =~ /^\xFE\xFF/) {
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$reader->move_along(2);
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$reader->set_encoding('UTF-16BE');
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return;
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}
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elsif ($data =~ /^\xEF\xBB\xBF/) { # UTF-8 BOM
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$reader->move_along(3);
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$reader->set_encoding('UTF-8');
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return;
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}
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elsif ($data =~ /^\x3C\x00\x00\x00/) {
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$reader->set_encoding('UCS-4LE');
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return;
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}
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elsif ($data =~ /^\x3C\x00\x3F\x00/) {
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$reader->set_encoding('UTF-16LE');
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return;
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}
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elsif ($data =~ /^\x3C\x3F\x78\x6D/) {
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# $reader->set_encoding('UTF-8');
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return;
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}
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elsif ($data =~ /^\x3C\x3F\x78/) {
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# $reader->set_encoding('UTF-8');
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return;
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}
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elsif ($data =~ /^\x3C\x3F/) {
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# $reader->set_encoding('UTF-8');
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return;
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}
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elsif ($data =~ /^\x3C/) {
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# $reader->set_encoding('UTF-8');
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return;
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}
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elsif ($data =~ /^[\x20\x09\x0A\x0D]+\x3C[^\x3F]/) {
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# $reader->set_encoding('UTF-8');
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return;
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}
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elsif ($data =~ /^\x4C\x6F\xA7\x94/) {
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$reader->set_encoding('EBCDIC');
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return;
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}
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warn("Unable to recognise encoding of this document");
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return;
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}
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1;
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