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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _CHARACTER_ENCODING_DETECTOR_H
#define _CHARACTER_ENCODING_DETECTOR_H
#include <media/mediascanner.h>
#include "StringArray.h"
#include "unicode/ucnv.h"
#include "unicode/ucsdet.h"
#include "unicode/ustring.h"
namespace android {
class CharacterEncodingDetector {
public:
CharacterEncodingDetector();
~CharacterEncodingDetector();
void addTag(const char *name, const char *value);
size_t size();
void detectAndConvert();
status_t getTag(int index, const char **name, const char**value);
private:
const UCharsetMatch *getPreferred(
const char *input, size_t len, const UCharsetMatch** ucma, size_t matches);
bool isFrequent(const uint16_t *values, uint32_t c);
// cached name and value strings, for native encoding support.
// TODO: replace these with byte blob arrays that don't require the data to be
// singlenullbyte-terminated
StringArray mNames;
StringArray mValues;
UConverter* mUtf8Conv;
};
}; // namespace android
#endif
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