125 lines
2.5 KiB
Plaintext
125 lines
2.5 KiB
Plaintext
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#!/usr/bin/perl -w
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#
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# Copyright 1999 Clark Cooper <coopercc@netheaven.com>
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# All rights reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the same terms as Perl itself.
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#
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# $Revision: 1.1.1.1 $
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#
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# $Date: 2003-07-27 11:07:11 $
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#
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# This program take an XML document (either on standard input or
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# from a filename supplied as an argument) and generates corresponding
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# canonical XML document on the standard output. The definition of
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# "Canonical XML" that I'm using is taken from the working draft
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# published by W3C on 19-Jan-2000:
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#
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# http://www.w3.org/TR/2000/WD-xml-c14n-20000119.html
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#
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# The latest version of this document is at:
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#
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# http://www.w3.org/TR/xml-c14n
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#
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use XML::Parser;
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my $indoctype = 0;
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my $inroot = 0;
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my $p = new XML::Parser(ErrorContext => 2,
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Namespaces => 1,
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ParseParamEnt => 1,
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Handlers => {Start => \&sthndl,
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End => \&endhndl,
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Char => \&chrhndl,
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Proc => \&proc,
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Doctype => sub {$indoctype = 1},
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DoctypeFin => sub {$indoctype = 0}
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}
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);
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my $file = shift;
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if (defined $file) {
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$p->parsefile($file);
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}
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else {
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$p->parse(*STDIN);
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}
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################
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## End main
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################
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sub sthndl {
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my $xp = shift;
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my $el = shift;
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$inroot = 1 unless $inroot;
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my $ns_index = 1;
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my $elns = $xp->namespace($el);
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if (defined $elns) {
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my $pfx = 'n' . $ns_index++;
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print "<$pfx:$el xmlns:$pfx=\"$elns\"";
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}
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else {
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print "<$el";
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}
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if (@_) {
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for (my $i = 0; $i < @_; $i += 2) {
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my $nm = $_[$i];
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my $ns = $xp->namespace($nm);
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$_[$i] = defined($ns) ? "$ns\01$nm" : "\01$nm";
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}
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my %atts = @_;
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my @ids = sort keys %atts;
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foreach my $id (@ids) {
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my ($ns, $nm) = split(/\01/, $id);
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my $val = $xp->xml_escape($atts{$id}, '"', "\x9", "\xA", "\xD");
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if (length($ns)) {
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my $pfx = 'n' . $ns_index++;
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print " $pfx:$nm=\"$val\" xmlns:$pfx=\"$ns\"";
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}
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else {
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print " $nm=\"$val\"";
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}
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}
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}
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print '>';
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} # End sthndl
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sub endhndl {
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my ($xp, $el) = @_;
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my $nm = $xp->namespace($el) ? "n1:$el" : $el;
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print "</$nm>";
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if ($xp->depth == 0) {
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$inroot = 0;
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print "\n";
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}
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} # End endhndl
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sub chrhndl {
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my ($xp, $data) = @_;
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print $xp->xml_escape($data, '>', "\xD");
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} # End chrhndl
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sub proc {
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my ($xp, $target, $data) = @_;
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unless ($indoctype) {
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print "<?$target $data?>";
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print "\n" unless $inroot;
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}
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}
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# Tell emacs that this is really a perl script
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#Local Variables:
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#mode: perl
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#End:
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