358 lines
12 KiB
C++
358 lines
12 KiB
C++
/*
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* ******************************************************************************
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* *
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* *
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* * This program and the accompanying materials are made available under the
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* * terms of the Apache License, Version 2.0 which is available at
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* * https://www.apache.org/licenses/LICENSE-2.0.
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* *
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* * See the NOTICE file distributed with this work for additional
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* * information regarding copyright ownership.
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* * Unless required by applicable law or agreed to in writing, software
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* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* * License for the specific language governing permissions and limitations
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* * under the License.
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* *
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* * SPDX-License-Identifier: Apache-2.0
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* *****************************************************************************
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*/
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//
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// Created by raver119 on 20/04/18.
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// @author Oleg Semeniv <oleg.semeniv@gmail.com>
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//
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#include <exceptions/datatype_exception.h>
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#include <helpers/BitwiseUtils.h>
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#include <helpers/StringUtils.h>
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#include <bitset>
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#include "execution/Threads.h"
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#include "helpers/ShapeUtils.h"
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namespace sd {
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void StringUtils::setValueForDifferentDataType(NDArray* arr, LongType idx, NDArray* input, DataType zType) {
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switch(zType) {
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#if HAS_UTF8
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case UTF8: {
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switch(input->dataType()) {
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case UTF8:
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arr->p<std::string>(idx, input->e<std::string>(idx));
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break;
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case UTF16:
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arr->p<std::string>(idx, std::string(input->e<std::u16string>(idx).begin(), input->e<std::u16string>(idx).end()));
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break;
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case UTF32:
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arr->p<std::string>(idx, std::string(input->e<std::u32string>(idx).begin(), input->e<std::u32string>(idx).end()));
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break;
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default:
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THROW_EXCEPTION("Unsupported DataType for source string.");
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}
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break;
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}
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#endif
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#if HAS_UTF16
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case UTF16: {
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switch(input->dataType()) {
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case UTF8:
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arr->p<std::u16string>(idx, std::u16string(input->e<std::string>(idx).begin(), input->e<std::string>(idx).end()));
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break;
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case UTF16:
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arr->p<std::u16string>(idx, input->e<std::u16string>(idx));
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break;
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case UTF32:
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arr->p<std::u16string>(idx, std::u16string(input->e<std::u32string>(idx).begin(), input->e<std::u32string>(idx).end()));
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break;
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default:
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THROW_EXCEPTION("Unsupported DataType for source string.");
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}
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break;
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}
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#endif
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#if HAS_UTF32
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case UTF32: {
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switch(input->dataType()) {
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case UTF8:
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arr->p<std::u32string>(idx, std::u32string(input->e<std::string>(idx).begin(), input->e<std::string>(idx).end()));
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break;
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case UTF16:
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arr->p<std::u32string>(idx, std::u32string(input->e<std::u16string>(idx).begin(), input->e<std::u16string>(idx).end()));
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break;
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case UTF32:
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arr->p<std::u32string>(idx, input->e<std::u32string>(idx));
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break;
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default:
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THROW_EXCEPTION("Unsupported DataType for source string.");
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}
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break;
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}
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#endif
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default:
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THROW_EXCEPTION("Unsupported DataType for destination string.");
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}
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}
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void StringUtils::broadcastStringAssign(NDArray* x, NDArray* z) {
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if (!x->isBroadcastableTo(*z)) {
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THROW_EXCEPTION("Shapes of x and z are not broadcastable.");
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}
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auto zType = z->dataType();
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auto xCasted = x->cast(zType);
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std::vector<LongType> zeroVec = {0};
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std::vector<LongType> *restDims = ShapeUtils::evalDimsToExclude(x->rankOf(), 1, zeroVec.data());
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auto xTensors = xCasted->allTensorsAlongDimension(*restDims);
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auto zTensors = z->allTensorsAlongDimension(*restDims);
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delete restDims;
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if (xCasted->isScalar()) {
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for (int e = 0; e < zTensors.size(); e++) {
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for (int f = 0; f < zTensors.at(e)->lengthOf(); f++) {
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setValueForDifferentDataType(zTensors.at(e), f, xCasted, zType);
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}
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}
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} else {
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for (int e = 0; e < xTensors.size(); e++) {
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auto tensor = xTensors.at(e);
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for (int f = 0; f < tensor->lengthOf(); f++) {
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setValueForDifferentDataType(zTensors.at(e), f, tensor, zType);
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}
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}
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}
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}
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template <typename T>
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void StringUtils::convertStringsForDifferentDataType(NDArray* sourceArray, NDArray* targetArray) {
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if (!sourceArray->isS() || !targetArray->isS()) THROW_EXCEPTION("Source or target array is not a string array!");
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int numStrings = sourceArray->isScalar() ? 1 : sourceArray->lengthOf();
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auto inData = sourceArray->bufferAsT<int8_t>() + ShapeUtils::stringBufferHeaderRequirements(sourceArray->lengthOf());
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auto outData = targetArray->bufferAsT<int8_t>() + ShapeUtils::stringBufferHeaderRequirements(targetArray->lengthOf());
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const auto nInputoffsets = sourceArray->bufferAsT<LongType>();
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const auto nOutputoffsets = targetArray->bufferAsT<LongType>();
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for (int e = 0; e < numStrings; e++) {
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auto idata = inData + nInputoffsets[e];
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auto cdata = outData + nOutputoffsets[e];
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auto start = nInputoffsets[e];
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auto end = nInputoffsets[e + 1];
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// Convert based on target type (using UTF conversions)
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if (DataTypeUtils::fromT<T>() == UTF16) {
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if (sourceArray->dataType() == UTF8) {
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unicode::utf8to16(idata, cdata, end);
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} else if(sourceArray->dataType() == UTF32) {
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unicode::utf32to16(idata, cdata, (end / sizeof(char32_t)));
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}
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} else if (DataTypeUtils::fromT<T>() == UTF32) {
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if (sourceArray->dataType() == UTF8) {
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unicode::utf8to32(idata, cdata, end);
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} else if(sourceArray->dataType() == UTF16) {
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unicode::utf16to32(idata, cdata, (end / sizeof(char16_t)));
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}
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} else {
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if (sourceArray->dataType() == UTF16) {
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unicode::utf16to8(idata, cdata, (end / sizeof(char16_t)));
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} else if(sourceArray->dataType() == UTF32) {
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unicode::utf32to8(idata, cdata, (end / sizeof(char32_t)));
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}
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}
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}
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}
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#define DEFINE_CONVERT(T) template void StringUtils::convertStringsForDifferentDataType<GET_SECOND(T)>(NDArray* sourceArray, NDArray* targetArray);
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ITERATE_LIST((SD_STRING_TYPES),DEFINE_CONVERT)
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template <typename T>
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std::vector<LongType> StringUtils::calculateOffsetsForTargetDataType(NDArray* sourceArray) {
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if (!sourceArray->isS()) THROW_EXCEPTION("Source array is not a string array!");
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LongType offsetsLength = ShapeUtils::stringBufferHeaderRequirements(sourceArray->lengthOf());
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std::vector<LongType> offsets(sourceArray->lengthOf() + 1);
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const auto nInputoffsets = sourceArray->bufferAsT<LongType>();
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LongType start = 0, stop = 0;
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LongType dataLength = 0;
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int numStrings = sourceArray->isScalar() ? 1 : sourceArray->lengthOf();
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auto data = sourceArray->bufferAsT<int8_t>() + offsetsLength;
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for (LongType e = 0; e < numStrings; e++) {
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offsets[e] = dataLength;
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start = nInputoffsets[e];
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stop = nInputoffsets[e + 1];
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// Determine size difference based on the target type (using UTF conversions)
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if (sourceArray->dataType() == UTF8) {
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dataLength += (DataTypeUtils::fromT<T>() == UTF16)
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? unicode::offsetUtf8StringInUtf16(data + start, stop)
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: unicode::offsetUtf8StringInUtf32(data + start, stop);
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} else if (sourceArray->dataType() == UTF16) {
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dataLength += (DataTypeUtils::fromT<T>() == UTF32)
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? unicode::offsetUtf16StringInUtf32(data + start, (stop / sizeof(char16_t)))
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: unicode::offsetUtf16StringInUtf8(data + start, (stop / sizeof(char16_t)));
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} else if (sourceArray->dataType() == UTF32) {
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dataLength += (DataTypeUtils::fromT<T>() == UTF16)
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? unicode::offsetUtf32StringInUtf16(data + start, (stop / sizeof(char32_t)))
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: unicode::offsetUtf32StringInUtf8(data + start, (stop / sizeof(char32_t)));
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}
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}
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offsets[numStrings] = dataLength;
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return offsets;
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}
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#define DEFINE_OFFSET(T) template std::vector<LongType> StringUtils::calculateOffsetsForTargetDataType<GET_SECOND(T)>(NDArray* sourceArray);
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ITERATE_LIST((SD_STRING_TYPES),DEFINE_OFFSET)
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static SD_INLINE bool match(const LongType* haystack, const LongType* needle, LongType length) {
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for (int e = 0; e < length; e++)
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if (haystack[e] != needle[e]) return false;
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return true;
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}
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template <typename T>
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std::string StringUtils::bitsToString(T value) {
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return std::bitset<sizeof(T) * 8>(value).to_string();
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}
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template std::string StringUtils::bitsToString(int value);
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template std::string StringUtils::bitsToString(uint32_t value);
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template std::string StringUtils::bitsToString(LongType value);
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template std::string StringUtils::bitsToString(uint64_t value);
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LongType StringUtils::countSubarrays(const void* haystack, LongType haystackLength, const void* needle,
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LongType needleLength) {
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auto haystack2 = reinterpret_cast<const LongType*>(haystack);
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auto needle2 = reinterpret_cast<const LongType*>(needle);
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LongType number = 0;
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for (LongType e = 0; e < haystackLength - needleLength; e++) {
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if (match(&haystack2[e], needle2, needleLength)) number++;
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}
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return number;
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}
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LongType StringUtils::byteLength(NDArray& array) {
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if (!array.isS())
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THROW_EXCEPTION(datatype_exception::build("StringUtils::byteLength expects one of String types;", array.dataType()).what());
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auto buffer = array.bufferAsT<LongType>();
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return buffer[array.lengthOf()];
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}
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std::vector<std::string> StringUtils::split(const std::string& haystack, const std::string& delimiter) {
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std::vector<std::string> output;
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std::string::size_type prev_pos = 0, pos = 0;
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// iterating through the haystack till the end
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while ((pos = haystack.find(delimiter, pos)) != std::string::npos) {
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output.emplace_back(haystack.substr(prev_pos, pos - prev_pos));
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prev_pos = ++pos;
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}
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output.emplace_back(haystack.substr(prev_pos, pos - prev_pos)); // Last word
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return output;
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}
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bool StringUtils::u8StringToU16String(const std::string& u8, std::u16string& u16) {
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if (u8.empty()) return false;
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u16.resize(unicode::offsetUtf8StringInUtf16(u8.data(), u8.size()) / sizeof(char16_t));
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if (u8.size() == u16.size())
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u16.assign(u8.begin(), u8.end());
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else
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return unicode::utf8to16(u8.data(), &u16[0], u8.size());
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return true;
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}
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bool StringUtils::u8StringToU32String(const std::string& u8, std::u32string& u32) {
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if (u8.empty()) return false;
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u32.resize(unicode::offsetUtf8StringInUtf32(u8.data(), u8.size()) / sizeof(char32_t));
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if (u8.size() == u32.size())
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u32.assign(u8.begin(), u8.end());
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else
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return unicode::utf8to32(u8.data(), &u32[0], u8.size());
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return true;
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}
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bool StringUtils::u16StringToU32String(const std::u16string& u16, std::u32string& u32) {
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if (u16.empty()) return false;
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u32.resize(unicode::offsetUtf16StringInUtf32(u16.data(), u16.size()) / sizeof(char32_t));
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if (u16.size() == u32.size())
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u32.assign(u16.begin(), u16.end());
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else
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return unicode::utf16to32(u16.data(), &u32[0], u16.size());
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return true;
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}
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bool StringUtils::u16StringToU8String(const std::u16string& u16, std::string& u8) {
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if (u16.empty()) return false;
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u8.resize(unicode::offsetUtf16StringInUtf8(u16.data(), u16.size()));
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if (u16.size() == u8.size())
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u8.assign(u16.begin(), u16.end());
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else
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return unicode::utf16to8(u16.data(), &u8[0], u16.size());
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return true;
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}
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bool StringUtils::u32StringToU16String(const std::u32string& u32, std::u16string& u16) {
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if (u32.empty()) return false;
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u16.resize(unicode::offsetUtf32StringInUtf16(u32.data(), u32.size()) / sizeof(char16_t));
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if (u32.size() == u16.size())
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u16.assign(u32.begin(), u32.end());
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else
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return unicode::utf32to16(u32.data(), &u16[0], u32.size());
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return true;
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}
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bool StringUtils::u32StringToU8String(const std::u32string& u32, std::string& u8) {
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if (u32.empty()) return false;
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u8.resize(unicode::offsetUtf32StringInUtf8(u32.data(), u32.size()));
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if (u32.size() == u8.size())
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u8.assign(u32.begin(), u32.end());
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else
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return unicode::utf32to8(u32.data(), &u8[0], u32.size());
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return true;
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}
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template <typename T>
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std::string StringUtils::vectorToString(const std::vector<T>& vec) {
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std::string result;
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for (auto v : vec) result += valueToString<T>(v);
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return result;
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}
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template std::string StringUtils::vectorToString(const std::vector<int>& vec);
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template std::string StringUtils::vectorToString(const std::vector<LongType>& vec);
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template std::string StringUtils::vectorToString(const std::vector<int16_t>& vec);
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template std::string StringUtils::vectorToString(const std::vector<uint32_t>& vec);
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} // namespace sd
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