60 lines
2.1 KiB
JavaScript
60 lines
2.1 KiB
JavaScript
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"use strict";
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var __importDefault = (this && this.__importDefault) || function (mod) {
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return (mod && mod.__esModule) ? mod : { "default": mod };
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.alignString = void 0;
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const string_width_1 = __importDefault(require("string-width"));
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const utils_1 = require("./utils");
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const alignLeft = (subject, width) => {
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return subject + ' '.repeat(width);
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};
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const alignRight = (subject, width) => {
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return ' '.repeat(width) + subject;
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};
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const alignCenter = (subject, width) => {
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return ' '.repeat(Math.floor(width / 2)) + subject + ' '.repeat(Math.ceil(width / 2));
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};
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const alignJustify = (subject, width) => {
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const spaceSequenceCount = utils_1.countSpaceSequence(subject);
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if (spaceSequenceCount === 0) {
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return alignLeft(subject, width);
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}
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const addingSpaces = utils_1.distributeUnevenly(width, spaceSequenceCount);
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if (Math.max(...addingSpaces) > 3) {
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return alignLeft(subject, width);
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}
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let spaceSequenceIndex = 0;
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return subject.replace(/\s+/g, (groupSpace) => {
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return groupSpace + ' '.repeat(addingSpaces[spaceSequenceIndex++]);
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});
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};
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/**
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* Pads a string to the left and/or right to position the subject
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* text in a desired alignment within a container.
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*/
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const alignString = (subject, containerWidth, alignment) => {
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const subjectWidth = string_width_1.default(subject);
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if (subjectWidth === containerWidth) {
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return subject;
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}
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if (subjectWidth > containerWidth) {
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throw new Error('Subject parameter value width cannot be greater than the container width.');
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}
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if (subjectWidth === 0) {
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return ' '.repeat(containerWidth);
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}
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const availableWidth = containerWidth - subjectWidth;
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if (alignment === 'left') {
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return alignLeft(subject, availableWidth);
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}
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if (alignment === 'right') {
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return alignRight(subject, availableWidth);
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}
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if (alignment === 'justify') {
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return alignJustify(subject, availableWidth);
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}
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return alignCenter(subject, availableWidth);
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};
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exports.alignString = alignString;
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