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LibWeb: Implement encoding sniffing algorithm
This patch implements the HTML specification's "encoding sniffing algorithm", which is used when no encoding can be obtained from the Content-Type header (either because it doesn't contain a charset=...) value or the file has not been opened via HTTP (as with local files). It also modifies the creator of the HTMLDocumentParser to use the new HTMLDocumentParser::create_with_uncertain_encoding static method, which runs the encoding sniffing algorithm before instantiating the parser. This now allows us to load local HTML pages (or remote pages without a charset specified in the 'Content-Type' header) with a non-UTF-8 encoding such as 'windows-1252'. This would previously crash the browser. :^)
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6 changed files with 261 additions and 2 deletions
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@ -147,6 +147,7 @@ set(SOURCES
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HTML/ImageData.cpp
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HTML/Parser/Entities.cpp
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HTML/Parser/HTMLDocumentParser.cpp
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HTML/Parser/HTMLEncodingDetection.cpp
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HTML/Parser/HTMLToken.cpp
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HTML/Parser/HTMLTokenizer.cpp
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HTML/Parser/ListOfActiveFormattingElements.cpp
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