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87 lines
2.7 KiB
JavaScript
87 lines
2.7 KiB
JavaScript
// -*-coding: latin-1;-*-
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// Time-stamp: "2006-05-17 22:06:46 ADT" sburke@cpan.org
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// A workaround for XSL-to-XHTML systems that don't
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// implement XSL 'disable-output-escaping="yes"'.
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//
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// sburke@cpan.org, Sean M. Burke.
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// - I hereby release this JavaScript code into the public domain.
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var is_decoding;
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var DEBUG = 0;
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function complaining (s) { alert(s); return new Error(s,s); }
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if(!( document.getElementById && document.getElementsByName ))
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throw complaining("Your browser is too old to render this page properly."
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+ " Consider going to getfirefox.com to upgrade.");
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function check_decoding () {
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var d = document.getElementById('cometestme');
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if(!d) {
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throw complaining("Can't find an id='cometestme' element?");
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} else if(!('textContent' in d)) {
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// It's a browser with a halfassed DOM implementation (like IE6)
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// that doesn't implement textContent! Assume that if it's that
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// dumb, it probably doesn't implement disable-content-encoding.
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} else {
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var ampy = d.textContent;
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if(DEBUG > 1) { alert("Got " + ampy); }
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if(ampy == undefined) throw complaining("'cometestme' element has undefined text content?!");
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if(ampy == '' ) throw complaining("'cometestme' element has empty text content?!" );
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if (ampy == "\x26" ) { is_decoding = true; }
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else if (ampy == "\x26amp;" ) { is_decoding = false; }
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else { throw complaining('Insane value: "' + ampy + '"!'); }
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}
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var msg =
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(is_decoding == undefined) ? "I can't tell whether the XSL processor supports disable-content-encoding!D"
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: is_decoding ? "The XSL processor DOES support disable-content-encoding"
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: "The XSL processor does NOT support disable-content-encoding"
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;
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if(DEBUG) alert(msg);
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return msg;
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}
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function go_decoding () {
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check_decoding();
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if(is_decoding) {
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DEBUG && alert("No work needs doing -- already decoded!");
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return;
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}
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var to_decode = document.getElementsByName('decodeme');
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if(!( to_decode && to_decode.length )) {
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DEBUG && alert("No work needs doing -- no elements to decode!");
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return;
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}
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if(!( ( "innerHTML" in to_decode[0]) && ( "textContent" in to_decode[0]) ))
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throw complaining( "Your JavaScript version doesn't implement DOM " +
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"properly enough to show this page correctly. " +
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"Consider going to getfirefox.com to upgrade.");
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var s;
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for(var i = to_decode.length - 1; i >= 0; i--) {
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s = to_decode[i].textContent;
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if(
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s == undefined ||
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(s.indexOf('&') == -1 && s.indexOf('<') == -1)
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) {
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// the null or markupless element needs no reworking
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} else {
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to_decode[i].innerHTML = s; // that's the magic
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}
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}
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return;
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}
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//End
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