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| 1 /* |
| 2 ******************************************************************************* |
| 3 * Copyright (C) 2013-2014, International Business Machines |
| 4 * Corporation and others. All Rights Reserved. |
| 5 ******************************************************************************* |
| 6 * collationsettings.cpp |
| 7 * |
| 8 * created on: 2013feb07 |
| 9 * created by: Markus W. Scherer |
| 10 */ |
| 11 |
| 12 #include "unicode/utypes.h" |
| 13 |
| 14 #if !UCONFIG_NO_COLLATION |
| 15 |
| 16 #include "unicode/ucol.h" |
| 17 #include "cmemory.h" |
| 18 #include "collation.h" |
| 19 #include "collationsettings.h" |
| 20 #include "sharedobject.h" |
| 21 #include "uassert.h" |
| 22 #include "umutex.h" |
| 23 |
| 24 U_NAMESPACE_BEGIN |
| 25 |
| 26 CollationSettings::CollationSettings(const CollationSettings &other) |
| 27 : SharedObject(other), |
| 28 options(other.options), variableTop(other.variableTop), |
| 29 reorderTable(NULL), |
| 30 reorderCodes(NULL), reorderCodesLength(0), reorderCodesCapacity(0), |
| 31 fastLatinOptions(other.fastLatinOptions) { |
| 32 int32_t length = other.reorderCodesLength; |
| 33 if(length == 0) { |
| 34 U_ASSERT(other.reorderTable == NULL); |
| 35 } else { |
| 36 U_ASSERT(other.reorderTable != NULL); |
| 37 if(other.reorderCodesCapacity == 0) { |
| 38 aliasReordering(other.reorderCodes, length, other.reorderTable); |
| 39 } else { |
| 40 setReordering(other.reorderCodes, length, other.reorderTable); |
| 41 } |
| 42 } |
| 43 if(fastLatinOptions >= 0) { |
| 44 uprv_memcpy(fastLatinPrimaries, other.fastLatinPrimaries, sizeof(fastLat
inPrimaries)); |
| 45 } |
| 46 } |
| 47 |
| 48 CollationSettings::~CollationSettings() { |
| 49 if(reorderCodesCapacity != 0) { |
| 50 uprv_free(const_cast<int32_t *>(reorderCodes)); |
| 51 } |
| 52 } |
| 53 |
| 54 UBool |
| 55 CollationSettings::operator==(const CollationSettings &other) const { |
| 56 if(options != other.options) { return FALSE; } |
| 57 if((options & ALTERNATE_MASK) != 0 && variableTop != other.variableTop) { re
turn FALSE; } |
| 58 if(reorderCodesLength != other.reorderCodesLength) { return FALSE; } |
| 59 for(int32_t i = 0; i < reorderCodesLength; ++i) { |
| 60 if(reorderCodes[i] != other.reorderCodes[i]) { return FALSE; } |
| 61 } |
| 62 return TRUE; |
| 63 } |
| 64 |
| 65 int32_t |
| 66 CollationSettings::hashCode() const { |
| 67 int32_t h = options << 8; |
| 68 if((options & ALTERNATE_MASK) != 0) { h ^= variableTop; } |
| 69 h ^= reorderCodesLength; |
| 70 for(int32_t i = 0; i < reorderCodesLength; ++i) { |
| 71 h ^= (reorderCodes[i] << i); |
| 72 } |
| 73 return h; |
| 74 } |
| 75 |
| 76 void |
| 77 CollationSettings::resetReordering() { |
| 78 // When we turn off reordering, we want to set a NULL permutation |
| 79 // rather than a no-op permutation. |
| 80 // Keep the memory via reorderCodes and its capacity. |
| 81 reorderTable = NULL; |
| 82 reorderCodesLength = 0; |
| 83 } |
| 84 |
| 85 void |
| 86 CollationSettings::aliasReordering(const int32_t *codes, int32_t length, const u
int8_t *table) { |
| 87 if(length == 0) { |
| 88 resetReordering(); |
| 89 } else { |
| 90 // We need to release the memory before setting the alias pointer. |
| 91 if(reorderCodesCapacity != 0) { |
| 92 uprv_free(const_cast<int32_t *>(reorderCodes)); |
| 93 reorderCodesCapacity = 0; |
| 94 } |
| 95 reorderTable = table; |
| 96 reorderCodes = codes; |
| 97 reorderCodesLength = length; |
| 98 } |
| 99 } |
| 100 |
| 101 UBool |
| 102 CollationSettings::setReordering(const int32_t *codes, int32_t length, const uin
t8_t table[256]) { |
| 103 if(length == 0) { |
| 104 resetReordering(); |
| 105 } else { |
| 106 uint8_t *ownedTable; |
| 107 int32_t *ownedCodes; |
| 108 if(length <= reorderCodesCapacity) { |
| 109 ownedTable = const_cast<uint8_t *>(reorderTable); |
| 110 ownedCodes = const_cast<int32_t *>(reorderCodes); |
| 111 } else { |
| 112 // Allocate one memory block for the codes and the 16-aligned table. |
| 113 int32_t capacity = (length + 3) & ~3; // round up to a multiple of
4 ints |
| 114 uint8_t *bytes = (uint8_t *)uprv_malloc(256 + capacity * 4); |
| 115 if(bytes == NULL) { return FALSE; } |
| 116 if(reorderCodesCapacity != 0) { |
| 117 uprv_free(const_cast<int32_t *>(reorderCodes)); |
| 118 } |
| 119 reorderTable = ownedTable = bytes + capacity * 4; |
| 120 reorderCodes = ownedCodes = (int32_t *)bytes; |
| 121 reorderCodesCapacity = capacity; |
| 122 } |
| 123 uprv_memcpy(ownedTable, table, 256); |
| 124 uprv_memcpy(ownedCodes, codes, length * 4); |
| 125 reorderCodesLength = length; |
| 126 } |
| 127 return TRUE; |
| 128 } |
| 129 |
| 130 void |
| 131 CollationSettings::setStrength(int32_t value, int32_t defaultOptions, UErrorCode
&errorCode) { |
| 132 if(U_FAILURE(errorCode)) { return; } |
| 133 int32_t noStrength = options & ~STRENGTH_MASK; |
| 134 switch(value) { |
| 135 case UCOL_PRIMARY: |
| 136 case UCOL_SECONDARY: |
| 137 case UCOL_TERTIARY: |
| 138 case UCOL_QUATERNARY: |
| 139 case UCOL_IDENTICAL: |
| 140 options = noStrength | (value << STRENGTH_SHIFT); |
| 141 break; |
| 142 case UCOL_DEFAULT: |
| 143 options = noStrength | (defaultOptions & STRENGTH_MASK); |
| 144 break; |
| 145 default: |
| 146 errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| 147 break; |
| 148 } |
| 149 } |
| 150 |
| 151 void |
| 152 CollationSettings::setFlag(int32_t bit, UColAttributeValue value, |
| 153 int32_t defaultOptions, UErrorCode &errorCode) { |
| 154 if(U_FAILURE(errorCode)) { return; } |
| 155 switch(value) { |
| 156 case UCOL_ON: |
| 157 options |= bit; |
| 158 break; |
| 159 case UCOL_OFF: |
| 160 options &= ~bit; |
| 161 break; |
| 162 case UCOL_DEFAULT: |
| 163 options = (options & ~bit) | (defaultOptions & bit); |
| 164 break; |
| 165 default: |
| 166 errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| 167 break; |
| 168 } |
| 169 } |
| 170 |
| 171 void |
| 172 CollationSettings::setCaseFirst(UColAttributeValue value, |
| 173 int32_t defaultOptions, UErrorCode &errorCode) { |
| 174 if(U_FAILURE(errorCode)) { return; } |
| 175 int32_t noCaseFirst = options & ~CASE_FIRST_AND_UPPER_MASK; |
| 176 switch(value) { |
| 177 case UCOL_OFF: |
| 178 options = noCaseFirst; |
| 179 break; |
| 180 case UCOL_LOWER_FIRST: |
| 181 options = noCaseFirst | CASE_FIRST; |
| 182 break; |
| 183 case UCOL_UPPER_FIRST: |
| 184 options = noCaseFirst | CASE_FIRST_AND_UPPER_MASK; |
| 185 break; |
| 186 case UCOL_DEFAULT: |
| 187 options = noCaseFirst | (defaultOptions & CASE_FIRST_AND_UPPER_MASK); |
| 188 break; |
| 189 default: |
| 190 errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| 191 break; |
| 192 } |
| 193 } |
| 194 |
| 195 void |
| 196 CollationSettings::setAlternateHandling(UColAttributeValue value, |
| 197 int32_t defaultOptions, UErrorCode &erro
rCode) { |
| 198 if(U_FAILURE(errorCode)) { return; } |
| 199 int32_t noAlternate = options & ~ALTERNATE_MASK; |
| 200 switch(value) { |
| 201 case UCOL_NON_IGNORABLE: |
| 202 options = noAlternate; |
| 203 break; |
| 204 case UCOL_SHIFTED: |
| 205 options = noAlternate | SHIFTED; |
| 206 break; |
| 207 case UCOL_DEFAULT: |
| 208 options = noAlternate | (defaultOptions & ALTERNATE_MASK); |
| 209 break; |
| 210 default: |
| 211 errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| 212 break; |
| 213 } |
| 214 } |
| 215 |
| 216 void |
| 217 CollationSettings::setMaxVariable(int32_t value, int32_t defaultOptions, UErrorC
ode &errorCode) { |
| 218 if(U_FAILURE(errorCode)) { return; } |
| 219 int32_t noMax = options & ~MAX_VARIABLE_MASK; |
| 220 switch(value) { |
| 221 case MAX_VAR_SPACE: |
| 222 case MAX_VAR_PUNCT: |
| 223 case MAX_VAR_SYMBOL: |
| 224 case MAX_VAR_CURRENCY: |
| 225 options = noMax | (value << MAX_VARIABLE_SHIFT); |
| 226 break; |
| 227 case UCOL_DEFAULT: |
| 228 options = noMax | (defaultOptions & MAX_VARIABLE_MASK); |
| 229 break; |
| 230 default: |
| 231 errorCode = U_ILLEGAL_ARGUMENT_ERROR; |
| 232 break; |
| 233 } |
| 234 } |
| 235 |
| 236 U_NAMESPACE_END |
| 237 |
| 238 #endif // !UCONFIG_NO_COLLATION |
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