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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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-rw-r--r--intl/icu/source/i18n/collationdatawriter.cpp352
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diff --git a/intl/icu/source/i18n/collationdatawriter.cpp b/intl/icu/source/i18n/collationdatawriter.cpp
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+// Copyright (C) 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+*******************************************************************************
+* Copyright (C) 2013-2015, International Business Machines
+* Corporation and others. All Rights Reserved.
+*******************************************************************************
+* collationdatawriter.cpp
+*
+* created on: 2013aug06
+* created by: Markus W. Scherer
+*/
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_COLLATION
+
+#include "unicode/tblcoll.h"
+#include "unicode/udata.h"
+#include "unicode/uniset.h"
+#include "cmemory.h"
+#include "collationdata.h"
+#include "collationdatabuilder.h"
+#include "collationdatareader.h"
+#include "collationdatawriter.h"
+#include "collationfastlatin.h"
+#include "collationsettings.h"
+#include "collationtailoring.h"
+#include "uassert.h"
+#include "ucmndata.h"
+
+U_NAMESPACE_BEGIN
+
+uint8_t *
+RuleBasedCollator::cloneRuleData(int32_t &length, UErrorCode &errorCode) const {
+ if(U_FAILURE(errorCode)) { return NULL; }
+ LocalMemory<uint8_t> buffer((uint8_t *)uprv_malloc(20000));
+ if(buffer.isNull()) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+ length = cloneBinary(buffer.getAlias(), 20000, errorCode);
+ if(errorCode == U_BUFFER_OVERFLOW_ERROR) {
+ if(buffer.allocateInsteadAndCopy(length, 0) == NULL) {
+ errorCode = U_MEMORY_ALLOCATION_ERROR;
+ return NULL;
+ }
+ errorCode = U_ZERO_ERROR;
+ length = cloneBinary(buffer.getAlias(), length, errorCode);
+ }
+ if(U_FAILURE(errorCode)) { return NULL; }
+ return buffer.orphan();
+}
+
+int32_t
+RuleBasedCollator::cloneBinary(uint8_t *dest, int32_t capacity, UErrorCode &errorCode) const {
+ int32_t indexes[CollationDataReader::IX_TOTAL_SIZE + 1];
+ return CollationDataWriter::writeTailoring(
+ *tailoring, *settings, indexes, dest, capacity,
+ errorCode);
+}
+
+static const UDataInfo dataInfo = {
+ sizeof(UDataInfo),
+ 0,
+
+ U_IS_BIG_ENDIAN,
+ U_CHARSET_FAMILY,
+ U_SIZEOF_UCHAR,
+ 0,
+
+ { 0x55, 0x43, 0x6f, 0x6c }, // dataFormat="UCol"
+ { 5, 0, 0, 0 }, // formatVersion
+ { 6, 3, 0, 0 } // dataVersion
+};
+
+int32_t
+CollationDataWriter::writeBase(const CollationData &data, const CollationSettings &settings,
+ const void *rootElements, int32_t rootElementsLength,
+ int32_t indexes[], uint8_t *dest, int32_t capacity,
+ UErrorCode &errorCode) {
+ return write(TRUE, NULL,
+ data, settings,
+ rootElements, rootElementsLength,
+ indexes, dest, capacity, errorCode);
+}
+
+int32_t
+CollationDataWriter::writeTailoring(const CollationTailoring &t, const CollationSettings &settings,
+ int32_t indexes[], uint8_t *dest, int32_t capacity,
+ UErrorCode &errorCode) {
+ return write(FALSE, t.version,
+ *t.data, settings,
+ NULL, 0,
+ indexes, dest, capacity, errorCode);
+}
+
+int32_t
+CollationDataWriter::write(UBool isBase, const UVersionInfo dataVersion,
+ const CollationData &data, const CollationSettings &settings,
+ const void *rootElements, int32_t rootElementsLength,
+ int32_t indexes[], uint8_t *dest, int32_t capacity,
+ UErrorCode &errorCode) {
+ if(U_FAILURE(errorCode)) { return 0; }
+ if(capacity < 0 || (capacity > 0 && dest == NULL)) {
+ errorCode = U_ILLEGAL_ARGUMENT_ERROR;
+ return 0;
+ }
+
+ // Figure out which data items to write before settling on
+ // the indexes length and writing offsets.
+ // For any data item, we need to write the start and limit offsets,
+ // so the indexes length must be at least index-of-start-offset + 2.
+ int32_t indexesLength;
+ UBool hasMappings;
+ UnicodeSet unsafeBackwardSet;
+ const CollationData *baseData = data.base;
+
+ int32_t fastLatinVersion;
+ if(data.fastLatinTable != NULL) {
+ fastLatinVersion = (int32_t)CollationFastLatin::VERSION << 16;
+ } else {
+ fastLatinVersion = 0;
+ }
+ int32_t fastLatinTableLength = 0;
+
+ if(isBase) {
+ // For the root collator, we write an even number of indexes
+ // so that we start with an 8-aligned offset.
+ indexesLength = CollationDataReader::IX_TOTAL_SIZE + 1;
+ U_ASSERT(settings.reorderCodesLength == 0);
+ hasMappings = TRUE;
+ unsafeBackwardSet = *data.unsafeBackwardSet;
+ fastLatinTableLength = data.fastLatinTableLength;
+ } else if(baseData == NULL) {
+ hasMappings = FALSE;
+ if(settings.reorderCodesLength == 0) {
+ // only options
+ indexesLength = CollationDataReader::IX_OPTIONS + 1; // no limit offset here
+ } else {
+ // only options, reorder codes, and the reorder table
+ indexesLength = CollationDataReader::IX_REORDER_TABLE_OFFSET + 2;
+ }
+ } else {
+ hasMappings = TRUE;
+ // Tailored mappings, and what else?
+ // Check in ascending order of optional tailoring data items.
+ indexesLength = CollationDataReader::IX_CE32S_OFFSET + 2;
+ if(data.contextsLength != 0) {
+ indexesLength = CollationDataReader::IX_CONTEXTS_OFFSET + 2;
+ }
+ unsafeBackwardSet.addAll(*data.unsafeBackwardSet).removeAll(*baseData->unsafeBackwardSet);
+ if(!unsafeBackwardSet.isEmpty()) {
+ indexesLength = CollationDataReader::IX_UNSAFE_BWD_OFFSET + 2;
+ }
+ if(data.fastLatinTable != baseData->fastLatinTable) {
+ fastLatinTableLength = data.fastLatinTableLength;
+ indexesLength = CollationDataReader::IX_FAST_LATIN_TABLE_OFFSET + 2;
+ }
+ }
+
+ UVector32 codesAndRanges(errorCode);
+ const int32_t *reorderCodes = settings.reorderCodes;
+ int32_t reorderCodesLength = settings.reorderCodesLength;
+ if(settings.hasReordering() &&
+ CollationSettings::reorderTableHasSplitBytes(settings.reorderTable)) {
+ // Rebuild the full list of reorder ranges.
+ // The list in the settings is truncated for efficiency.
+ data.makeReorderRanges(reorderCodes, reorderCodesLength, codesAndRanges, errorCode);
+ // Write the codes, then the ranges.
+ for(int32_t i = 0; i < reorderCodesLength; ++i) {
+ codesAndRanges.insertElementAt(reorderCodes[i], i, errorCode);
+ }
+ if(U_FAILURE(errorCode)) { return 0; }
+ reorderCodes = codesAndRanges.getBuffer();
+ reorderCodesLength = codesAndRanges.size();
+ }
+
+ int32_t headerSize;
+ if(isBase) {
+ headerSize = 0; // udata_create() writes the header
+ } else {
+ DataHeader header;
+ header.dataHeader.magic1 = 0xda;
+ header.dataHeader.magic2 = 0x27;
+ uprv_memcpy(&header.info, &dataInfo, sizeof(UDataInfo));
+ uprv_memcpy(header.info.dataVersion, dataVersion, sizeof(UVersionInfo));
+ headerSize = (int32_t)sizeof(header);
+ U_ASSERT((headerSize & 3) == 0); // multiple of 4 bytes
+ if(hasMappings && data.cesLength != 0) {
+ // Sum of the sizes of the data items which are
+ // not automatically multiples of 8 bytes and which are placed before the CEs.
+ int32_t sum = headerSize + (indexesLength + reorderCodesLength) * 4;
+ if((sum & 7) != 0) {
+ // We need to add padding somewhere so that the 64-bit CEs are 8-aligned.
+ // We add to the header size here.
+ // Alternatively, we could increment the indexesLength
+ // or add a few bytes to the reorderTable.
+ headerSize += 4;
+ }
+ }
+ header.dataHeader.headerSize = (uint16_t)headerSize;
+ if(headerSize <= capacity) {
+ uprv_memcpy(dest, &header, sizeof(header));
+ // Write 00 bytes so that the padding is not mistaken for a copyright string.
+ uprv_memset(dest + sizeof(header), 0, headerSize - (int32_t)sizeof(header));
+ dest += headerSize;
+ capacity -= headerSize;
+ } else {
+ dest = NULL;
+ capacity = 0;
+ }
+ }
+
+ indexes[CollationDataReader::IX_INDEXES_LENGTH] = indexesLength;
+ U_ASSERT((settings.options & ~0xffff) == 0);
+ indexes[CollationDataReader::IX_OPTIONS] =
+ data.numericPrimary | fastLatinVersion | settings.options;
+ indexes[CollationDataReader::IX_RESERVED2] = 0;
+ indexes[CollationDataReader::IX_RESERVED3] = 0;
+
+ // Byte offsets of data items all start from the start of the indexes.
+ // We add the headerSize at the very end.
+ int32_t totalSize = indexesLength * 4;
+
+ if(hasMappings && (isBase || data.jamoCE32s != baseData->jamoCE32s)) {
+ indexes[CollationDataReader::IX_JAMO_CE32S_START] = data.jamoCE32s - data.ce32s;
+ } else {
+ indexes[CollationDataReader::IX_JAMO_CE32S_START] = -1;
+ }
+
+ indexes[CollationDataReader::IX_REORDER_CODES_OFFSET] = totalSize;
+ totalSize += reorderCodesLength * 4;
+
+ indexes[CollationDataReader::IX_REORDER_TABLE_OFFSET] = totalSize;
+ if(settings.reorderTable != NULL) {
+ totalSize += 256;
+ }
+
+ indexes[CollationDataReader::IX_TRIE_OFFSET] = totalSize;
+ if(hasMappings) {
+ UErrorCode errorCode2 = U_ZERO_ERROR;
+ int32_t length;
+ if(totalSize < capacity) {
+ length = utrie2_serialize(data.trie, dest + totalSize,
+ capacity - totalSize, &errorCode2);
+ } else {
+ length = utrie2_serialize(data.trie, NULL, 0, &errorCode2);
+ }
+ if(U_FAILURE(errorCode2) && errorCode2 != U_BUFFER_OVERFLOW_ERROR) {
+ errorCode = errorCode2;
+ return 0;
+ }
+ // The trie size should be a multiple of 8 bytes due to the way
+ // compactIndex2(UNewTrie2 *trie) currently works.
+ U_ASSERT((length & 7) == 0);
+ totalSize += length;
+ }
+
+ indexes[CollationDataReader::IX_RESERVED8_OFFSET] = totalSize;
+ indexes[CollationDataReader::IX_CES_OFFSET] = totalSize;
+ if(hasMappings && data.cesLength != 0) {
+ U_ASSERT(((headerSize + totalSize) & 7) == 0);
+ totalSize += data.cesLength * 8;
+ }
+
+ indexes[CollationDataReader::IX_RESERVED10_OFFSET] = totalSize;
+ indexes[CollationDataReader::IX_CE32S_OFFSET] = totalSize;
+ if(hasMappings) {
+ totalSize += data.ce32sLength * 4;
+ }
+
+ indexes[CollationDataReader::IX_ROOT_ELEMENTS_OFFSET] = totalSize;
+ totalSize += rootElementsLength * 4;
+
+ indexes[CollationDataReader::IX_CONTEXTS_OFFSET] = totalSize;
+ if(hasMappings) {
+ totalSize += data.contextsLength * 2;
+ }
+
+ indexes[CollationDataReader::IX_UNSAFE_BWD_OFFSET] = totalSize;
+ if(hasMappings && !unsafeBackwardSet.isEmpty()) {
+ UErrorCode errorCode2 = U_ZERO_ERROR;
+ int32_t length;
+ if(totalSize < capacity) {
+ uint16_t *p = reinterpret_cast<uint16_t *>(dest + totalSize);
+ length = unsafeBackwardSet.serialize(
+ p, (capacity - totalSize) / 2, errorCode2);
+ } else {
+ length = unsafeBackwardSet.serialize(NULL, 0, errorCode2);
+ }
+ if(U_FAILURE(errorCode2) && errorCode2 != U_BUFFER_OVERFLOW_ERROR) {
+ errorCode = errorCode2;
+ return 0;
+ }
+ totalSize += length * 2;
+ }
+
+ indexes[CollationDataReader::IX_FAST_LATIN_TABLE_OFFSET] = totalSize;
+ totalSize += fastLatinTableLength * 2;
+
+ UnicodeString scripts;
+ indexes[CollationDataReader::IX_SCRIPTS_OFFSET] = totalSize;
+ if(isBase) {
+ scripts.append((UChar)data.numScripts);
+ scripts.append(reinterpret_cast<const UChar *>(data.scriptsIndex), data.numScripts + 16);
+ scripts.append(reinterpret_cast<const UChar *>(data.scriptStarts), data.scriptStartsLength);
+ totalSize += scripts.length() * 2;
+ }
+
+ indexes[CollationDataReader::IX_COMPRESSIBLE_BYTES_OFFSET] = totalSize;
+ if(isBase) {
+ totalSize += 256;
+ }
+
+ indexes[CollationDataReader::IX_RESERVED18_OFFSET] = totalSize;
+ indexes[CollationDataReader::IX_TOTAL_SIZE] = totalSize;
+
+ if(totalSize > capacity) {
+ errorCode = U_BUFFER_OVERFLOW_ERROR;
+ return headerSize + totalSize;
+ }
+
+ uprv_memcpy(dest, indexes, indexesLength * 4);
+ copyData(indexes, CollationDataReader::IX_REORDER_CODES_OFFSET, reorderCodes, dest);
+ copyData(indexes, CollationDataReader::IX_REORDER_TABLE_OFFSET, settings.reorderTable, dest);
+ // The trie has already been serialized into the dest buffer.
+ copyData(indexes, CollationDataReader::IX_CES_OFFSET, data.ces, dest);
+ copyData(indexes, CollationDataReader::IX_CE32S_OFFSET, data.ce32s, dest);
+ copyData(indexes, CollationDataReader::IX_ROOT_ELEMENTS_OFFSET, rootElements, dest);
+ copyData(indexes, CollationDataReader::IX_CONTEXTS_OFFSET, data.contexts, dest);
+ // The unsafeBackwardSet has already been serialized into the dest buffer.
+ copyData(indexes, CollationDataReader::IX_FAST_LATIN_TABLE_OFFSET, data.fastLatinTable, dest);
+ copyData(indexes, CollationDataReader::IX_SCRIPTS_OFFSET, scripts.getBuffer(), dest);
+ copyData(indexes, CollationDataReader::IX_COMPRESSIBLE_BYTES_OFFSET, data.compressibleBytes, dest);
+
+ return headerSize + totalSize;
+}
+
+void
+CollationDataWriter::copyData(const int32_t indexes[], int32_t startIndex,
+ const void *src, uint8_t *dest) {
+ int32_t start = indexes[startIndex];
+ int32_t limit = indexes[startIndex + 1];
+ if(start < limit) {
+ uprv_memcpy(dest + start, src, limit - start);
+ }
+}
+
+U_NAMESPACE_END
+
+#endif // !UCONFIG_NO_COLLATION