TextResourceDecoder.h [plain text]
#ifndef TextResourceDecoder_h
#define TextResourceDecoder_h
#include "PlatformString.h"
#include <wtf/RefCounted.h>
#include "TextDecoder.h"
#include <wtf/Vector.h>
namespace WebCore {
class TextResourceDecoder : public RefCounted<TextResourceDecoder> {
public:
enum EncodingSource {
DefaultEncoding,
AutoDetectedEncoding,
EncodingFromXMLHeader,
EncodingFromMetaTag,
EncodingFromCSSCharset,
EncodingFromHTTPHeader,
UserChosenEncoding
};
TextResourceDecoder(const String& mimeType, const TextEncoding& defaultEncoding = TextEncoding());
~TextResourceDecoder();
void setEncoding(const TextEncoding&, EncodingSource);
const TextEncoding& encoding() const { return m_decoder.encoding(); }
String decode(const char* data, size_t length);
String flush();
private:
enum ContentType { PlainText, HTML, XML, CSS }; static ContentType determineContentType(const String& mimeType);
static const TextEncoding& defaultEncoding(ContentType, const TextEncoding& defaultEncoding);
void checkForBOM(const char*, size_t);
bool checkForCSSCharset(const char*, size_t, bool& movedDataToBuffer);
bool checkForHeadCharset(const char*, size_t, bool& movedDataToBuffer);
void detectJapaneseEncoding(const char*, size_t);
ContentType m_contentType;
TextDecoder m_decoder;
EncodingSource m_source;
Vector<char> m_buffer;
bool m_checkedForBOM;
bool m_checkedForCSSCharset;
bool m_checkedForHeadCharset;
};
}
#endif