1 /* GENERATED SOURCE. DO NOT MODIFY. */ 2 // © 2016 and later: Unicode, Inc. and others. 3 // License & terms of use: http://www.unicode.org/copyright.html#License 4 /* 5 ******************************************************************************* 6 * Copyright (C) 2012-2016, International Business Machines Corporation and 7 * others. All Rights Reserved. 8 ******************************************************************************* 9 */ 10 11 package ohos.global.icu.text; 12 13 import java.io.IOException; 14 import java.nio.ByteBuffer; 15 16 import ohos.global.icu.impl.Assert; 17 import ohos.global.icu.impl.ICUBinary; 18 import ohos.global.icu.impl.ICUData; 19 import ohos.global.icu.impl.ICUResourceBundle; 20 import ohos.global.icu.util.UResourceBundle; 21 22 final class DictionaryData { 23 // disallow instantiation DictionaryData()24 private DictionaryData() { } 25 26 public static final int TRIE_TYPE_BYTES = 0; 27 public static final int TRIE_TYPE_UCHARS = 1; 28 public static final int TRIE_TYPE_MASK = 7; 29 public static final int TRIE_HAS_VALUES = 8; 30 public static final int TRANSFORM_NONE = 0; 31 public static final int TRANSFORM_TYPE_OFFSET = 0x1000000; 32 public static final int TRANSFORM_TYPE_MASK = 0x7f000000; 33 public static final int TRANSFORM_OFFSET_MASK = 0x1fffff; 34 35 public static final int IX_STRING_TRIE_OFFSET = 0; 36 public static final int IX_RESERVED1_OFFSET = 1; 37 public static final int IX_RESERVED2_OFFSET = 2; 38 public static final int IX_TOTAL_SIZE = 3; 39 public static final int IX_TRIE_TYPE = 4; 40 public static final int IX_TRANSFORM = 5; 41 public static final int IX_RESERVED6 = 6; 42 public static final int IX_RESERVED7 = 7; 43 public static final int IX_COUNT = 8; 44 45 private static final int DATA_FORMAT_ID = 0x44696374; 46 loadDictionaryFor(String dictType)47 public static DictionaryMatcher loadDictionaryFor(String dictType) throws IOException { 48 ICUResourceBundle rb = (ICUResourceBundle)UResourceBundle.getBundleInstance(ICUData.ICU_BRKITR_BASE_NAME); 49 String dictFileName = rb.getStringWithFallback("dictionaries/" + dictType); 50 dictFileName = ICUData.ICU_BRKITR_NAME + '/' + dictFileName; 51 ByteBuffer bytes = ICUBinary.getRequiredData(dictFileName); 52 ICUBinary.readHeader(bytes, DATA_FORMAT_ID, null); 53 int[] indexes = new int[IX_COUNT]; 54 // TODO: read indexes[IX_STRING_TRIE_OFFSET] first, then read a variable-length indexes[] 55 for (int i = 0; i < IX_COUNT; i++) { 56 indexes[i] = bytes.getInt(); 57 } 58 int offset = indexes[IX_STRING_TRIE_OFFSET]; 59 Assert.assrt(offset >= (4 * IX_COUNT)); 60 if (offset > (4 * IX_COUNT)) { 61 int diff = offset - (4 * IX_COUNT); 62 ICUBinary.skipBytes(bytes, diff); 63 } 64 int trieType = indexes[IX_TRIE_TYPE] & TRIE_TYPE_MASK; 65 int totalSize = indexes[IX_TOTAL_SIZE] - offset; 66 DictionaryMatcher m = null; 67 if (trieType == TRIE_TYPE_BYTES) { 68 int transform = indexes[IX_TRANSFORM]; 69 byte[] data = new byte[totalSize]; 70 bytes.get(data); 71 m = new BytesDictionaryMatcher(data, transform); 72 } else if (trieType == TRIE_TYPE_UCHARS) { 73 Assert.assrt(totalSize % 2 == 0); 74 String data = ICUBinary.getString(bytes, totalSize / 2, totalSize & 1); 75 m = new CharsDictionaryMatcher(data); 76 } else { 77 m = null; 78 } 79 return m; 80 } 81 } 82