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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 | 1x 1x 24x 24x 1x 1x 1x 30x 30x 30x 30x 30x 7x 7x 7x 7x 5x 23x 23x 23x 12x 30x 17x 17x 17x 30x 53x 30x 30x 30x 24x 24x 6x | import { splitTextSegment } from 'roosterjs-content-model-api';
import type {
ContentModelText,
FormatContentModelContext,
ShallowMutableContentModelParagraph,
} from 'roosterjs-content-model-types';
const getOrdinal = (value: number) => {
const ORDINALS: Record<number, string> = {
1: 'st',
2: 'nd',
3: 'rd',
};
return ORDINALS[value] || 'th';
};
const ORDINALS = ['st', 'nd', 'rd', 'th'];
/**
* The two last characters of ordinal number (st, nd, rd, th)
*/
const ORDINAL_LENGTH = 2;
/**
* @internal
*/ export function transformOrdinals(
previousSegment: ContentModelText,
paragraph: ShallowMutableContentModelParagraph,
context: FormatContentModelContext
): boolean {
const value = previousSegment.text.split(' ').pop()?.trim();
let shouldAddSuperScript = false;
Eif (value) {
const isOrdinal = ORDINALS.indexOf(value) > -1;
if (isOrdinal) {
const index = paragraph.segments.indexOf(previousSegment);
const numberSegment = paragraph.segments[index - 1];
let numericValue: number | null = null;
if (
numberSegment &&
numberSegment.segmentType == 'Text' &&
(numericValue = getNumericValue(numberSegment.text, true /* checkFullText */)) &&
getOrdinal(numericValue) === value
) {
shouldAddSuperScript = true;
}
} else {
const ordinal = value.substring(value.length - ORDINAL_LENGTH); // This value is equal st, nd, rd, th
const numericValue = getNumericValue(value); //This is the numeric part. Ex: 10th, numeric value =
if (numericValue && getOrdinal(numericValue) === ordinal) {
shouldAddSuperScript = true;
}
}
if (shouldAddSuperScript) {
const ordinalSegment = splitTextSegment(
previousSegment,
paragraph,
previousSegment.text.length - 3,
previousSegment.text.length - 1
);
ordinalSegment.format.superOrSubScriptSequence = 'super';
context.canUndoByBackspace = true;
}
}
return shouldAddSuperScript;
}
function getNumericValue(text: string, checkFullText: boolean = false): number | null {
const number = checkFullText ? text : text.substring(0, text.length - ORDINAL_LENGTH);
const isNumber = /^-?\d+$/.test(number);
if (isNumber) {
const numericValue = parseInt(number);
return Math.abs(numericValue) < 20
? numericValue
: parseInt(number.substring(number.length - 1));
}
return null;
}
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