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41 lines
1.7 KiB
TypeScript
41 lines
1.7 KiB
TypeScript
/**
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* Copyright 2023-present DreamNum Co., Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import type { ICellData, Nullable } from '@univerjs/core';
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import { CellValueType, isDefaultFormat, isTextFormat } from '@univerjs/core';
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import { getPatternType } from './pattern';
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export const DEFAULT_SCIENTIFIC_NOTATION_FORMAT = '0.00E+00';
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export function isScientificNotationNumericCell(cell: Nullable<ICellData>): boolean {
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return cell?.t === CellValueType.NUMBER && cell.v !== undefined && cell.v !== null && /e/i.test(String(cell.v));
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}
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export function getScientificNotationFormatFromCell(cell: Nullable<ICellData>): string {
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const text = String(cell?.v);
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const eIndex = text.search(/e/i);
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const decimalIndex = text.indexOf('.');
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const decimalLength = eIndex > -1 && decimalIndex > -1 ? eIndex - decimalIndex - 1 : 0;
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return `0.${'0'.repeat(Math.max(2, decimalLength))}E+00`;
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}
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// Scientific notation numbers cannot be accurately expanded with JS number precision, so only formats that preserve
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// the notation or raw text are allowed.
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export function isAllowedPatternForScientificNotationNumber(pattern?: string): boolean {
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return isDefaultFormat(pattern) || isTextFormat(pattern) || getPatternType(pattern) === 'scientific';
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}
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