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/*
* Copyright (C) 2011 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 ART_RUNTIME_UTF_INL_H_
#define ART_RUNTIME_UTF_INL_H_
#include "utf.h"
namespace art {
inline uint16_t GetUtf16FromUtf8(const char** utf8_data_in) {
uint8_t one = *(*utf8_data_in)++;
if ((one & 0x80) == 0) {
// one-byte encoding
return one;
}
// two- or three-byte encoding
uint8_t two = *(*utf8_data_in)++;
if ((one & 0x20) == 0) {
// two-byte encoding
return ((one & 0x1f) << 6) | (two & 0x3f);
}
// three-byte encoding
uint8_t three = *(*utf8_data_in)++;
return ((one & 0x0f) << 12) | ((two & 0x3f) << 6) | (three & 0x3f);
}
inline int CompareModifiedUtf8ToModifiedUtf8AsUtf16CodePointValues(const char* utf8_1,
const char* utf8_2) {
for (;;) {
if (*utf8_1 == '\0') {
return (*utf8_2 == '\0') ? 0 : -1;
} else if (*utf8_2 == '\0') {
return 1;
}
int c1 = GetUtf16FromUtf8(&utf8_1);
int c2 = GetUtf16FromUtf8(&utf8_2);
if (c1 != c2) {
return c1 > c2 ? 1 : -1;
}
}
}
} // namespace art
#endif // ART_RUNTIME_UTF_INL_H_
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