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wakaba |
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<!DOCTYPE HTML> |
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<html lang=en> |
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<head> |
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<title>Live URL Resolution Viewer</title> |
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<link rel=author href="http://suika.fam.cx/~wakaba/who?" title=Wakaba lang=ja> |
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<style> |
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h1 { |
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font-size: 100%; |
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} |
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textarea { |
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width: 90%; |
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height: 3em; |
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} |
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iframe { |
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visibility: hidden; |
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width: 0; |
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height: 0; |
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} |
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var { |
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color: orange; |
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} |
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</style> |
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<script> |
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document.createElement ('output'); |
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var updateTimer = 0; |
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function update () { |
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if (updateTimer) { |
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clearTimeout (updateTimer); |
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} |
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updateTimer = setTimeout (realUpdate, 100); |
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} // update |
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function htescape (s) { |
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return s.replace (/&/g, '&') |
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.replace (/</g, '<') |
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.replace (/>/g, '>') |
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.replace (/"/g, '"'); |
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} // htescape |
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function htescape2 (s) { |
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return s.replace (/&/g, '&') |
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.replace (/</g, '<') |
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.replace (/>/g, '>') |
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.replace (/"/g, '"') |
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.replace (/[\u0000-\u0020\u007F-\u00A0]/g, function (t) { |
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return '<var>&#x' + t.charCodeAt (0).toString (16).toUpperCase () + ';</var>'; |
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}); |
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} // htescape2 |
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function realUpdate () { |
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var baseURL = document.getElementById ('base-url').value; |
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var resolvedURL = document.getElementById ('resolved-url').value; |
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var pl = document.getElementById ('permalink'); |
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pl.href = location.pathname + '?' + encodeURIComponent (baseURL) + ';' + |
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encodeURIComponent (resolvedURL); |
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var iframe = document.getElementsByTagName ('iframe')[0]; |
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var doc = iframe.contentWindow.document; |
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doc.open (); |
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doc.write ('<!DOCTYPE HTML>'); |
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doc.write ('<base href="' + htescape (baseURL) + '">'); |
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doc.write ('<a href="' + htescape (resolvedURL) + '">xx</a>'); |
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doc.close (); |
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var resultURL = doc.getElementsByTagName ('a')[0].href; |
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var output = document.getElementsByTagName ('output')[0]; |
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output.innerHTML = ''; |
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if (typeof (resultURL) == 'undefined') { |
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output.innerHTML = '(undefined)'; |
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} else if (resultURL === null) { |
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output.innerHTML = '(null)'; |
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} else if (resultURL === '') { |
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output.innerHTML = '(empty string - URL resolution failed?)'; |
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} else { |
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output.innerHTML = '<code>' + htescape2 ('' + resultURL) + |
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'</code> of type <code>' + htescape (typeof (resultURL)) + '</code>'; |
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} |
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} // realUpdate |
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window.onload = function () { |
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if (location.search) { |
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var q = location.search.substring (1).split (/;/); |
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if (q[0] != null) { |
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document.getElementById ('base-url').value = decodeURIComponent (q[0]); |
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} |
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if (q[1] != null) { |
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document.getElementById ('resolved-url').value = decodeURIComponent (q[1]); |
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} |
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} |
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update (); |
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}; // window.onload |
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</script> |
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</head> |
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<body> |
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<h1>Live URL Resolution Viewer |
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(<a rel=bookmark id=permalink href>Permalink</a>)</h1> |
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<dl> |
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<dt><label for=resolved-url>Resolved URL</label>: |
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<dd><textarea id=resolved-url oninput="update()" onkeypress="update()"></textarea> |
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<dt><label for=base-url>Base URL</label>: |
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<dd><textarea id=base-url oninput="update()" onkeypress="update()"></textarea> |
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</dl> |
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<hr> |
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<dl> |
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<dt>Result (Using <code>HTMLAnchorElement.href</code>): |
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<dd><output></output> |
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</dl> |
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<iframe></iframe> |
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</body> |
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</html> |
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