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