1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 // Definitions internal to Minikin 17 18 #define LOG_TAG "Minikin" 19 20 #include <log/log.h> 21 22 #include "MinikinInternal.h" 23 24 namespace minikin { 25 isBMPVariationSelector(uint32_t codePoint)26inline static bool isBMPVariationSelector(uint32_t codePoint) { 27 return VS1 <= codePoint && codePoint <= VS16; 28 } 29 isVariationSelectorSupplement(uint32_t codePoint)30inline static bool isVariationSelectorSupplement(uint32_t codePoint) { 31 return VS17 <= codePoint && codePoint <= VS256; 32 } 33 getVsIndex(uint32_t codePoint)34uint16_t getVsIndex(uint32_t codePoint) { 35 if (isBMPVariationSelector(codePoint)) { 36 return codePoint - VS1; 37 } else if (isVariationSelectorSupplement(codePoint)) { 38 return codePoint - VS17 + 16; 39 } else { 40 return INVALID_VS_INDEX; 41 } 42 } 43 isVariationSelector(uint32_t codePoint)44bool isVariationSelector(uint32_t codePoint) { 45 return isBMPVariationSelector(codePoint) || isVariationSelectorSupplement(codePoint); 46 } 47 48 } // namespace minikin 49