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@ -130,6 +130,37 @@ function escapeHtml(str) { |
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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var SURRORATE_TEST_RE = /[\uD800-\uDFFF]/; |
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var SURRORATE_SEARCH_RE = /[\uD800-\uDFFF]/g; |
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function replaceBadSurrogate(ch, pos, orig) { |
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var code = ch.charCodeAt(0); |
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if (code >= 0xD800 && code <= 0xDBFF) { |
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// high surrogate
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if (pos >= orig.length - 1) { return '\uFFFD'; } |
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code = orig.charCodeAt(pos + 1); |
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if (code < 0xDC00 || code > 0xDFFF) { return '\uFFFD'; } |
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return ch; |
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} |
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// low surrogate
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if (pos === 0) { return '\uFFFD'; } |
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code = orig.charCodeAt(pos - 1); |
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if (code < 0xD900 || code > 0xDBFF) { return '\uFFFD'; } |
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return ch; |
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} |
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function fixBrokenSurrogates(str) { |
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if (!SURRORATE_TEST_RE.test(str)) { return str; } |
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return str.replace(SURRORATE_SEARCH_RE, replaceBadSurrogate); |
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} |
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////////////////////////////////////////////////////////////////////////////////
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// Incoming link can be partially encoded. Convert possible combinations to
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// Incoming link can be partially encoded. Convert possible combinations to
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// unified form.
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// unified form.
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//
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//
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@ -148,14 +179,9 @@ function normalizeLink(url) { |
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normalized = decodeURI(normalized); |
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normalized = decodeURI(normalized); |
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} catch (__) {} |
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} catch (__) {} |
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// Encoder throws exception on broken unicode sequence.
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// Encoder throws exception on broken surrogate pairs.
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// Kill suspicious data for the safety.
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// Fix those first.
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//
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return encodeURI(fixBrokenSurrogates(normalized)); |
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try { |
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return encodeURI(normalized); |
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} catch (__) { |
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return ''; |
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} |
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} |
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} |
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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