adaptive-expressions
Version:
Common Expression Language
41 lines • 1.71 kB
JavaScript
;
/**
* @module adaptive-expressions
*/
/**
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.TitleCase = void 0;
const functionUtils_1 = require("../functionUtils");
const expressionType_1 = require("../expressionType");
const functionUtils_internal_1 = require("../functionUtils.internal");
const stringTransformEvaluator_1 = require("./stringTransformEvaluator");
/**
* Converts the specified string to title case.
*/
class TitleCase extends stringTransformEvaluator_1.StringTransformEvaluator {
/**
* Initializes a new instance of the [TitleCase](xref:adaptive-expressions.TitleCase) class.
*/
constructor() {
super(expressionType_1.ExpressionType.TitleCase, TitleCase.evaluator, functionUtils_1.FunctionUtils.validateUnaryOrBinaryString);
}
static evaluator(args, options) {
let locale = options.locale ? options.locale : Intl.DateTimeFormat().resolvedOptions().locale;
locale = functionUtils_1.FunctionUtils.determineLocale(args, 2, locale);
const firstArg = args[0];
if (typeof firstArg === 'string' || firstArg === undefined) {
const inputStr = functionUtils_internal_1.InternalFunctionUtils.parseStringOrUndefined(firstArg).toLocaleLowerCase(locale);
if (inputStr === '') {
return inputStr;
}
else {
return inputStr.replace(/\w\S*/g, (txt) => txt.charAt(0).toUpperCase() + txt.substr(1).toLocaleLowerCase(locale));
}
}
}
}
exports.TitleCase = TitleCase;
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