97 lines
2.5 KiB
JavaScript
97 lines
2.5 KiB
JavaScript
/**
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* @license Apache-2.0
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*
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* Copyright (c) 2018 The Stdlib Authors.
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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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'use strict';
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// MODULES //
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var objectKeys = require( '@stdlib/utils/keys' );
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var isCapitalized = require( '@stdlib/assert/is-capitalized' );
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var uncapitalize = require( '@stdlib/string/uncapitalize' );
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var capitalize = require( '@stdlib/string/capitalize' );
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var tokenize = require( './../../tokenize' );
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var isString = require( '@stdlib/assert/is-string' ).isPrimitive;
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var CONTRACTIONS = require( './contractions.json' );
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// VARIABLES //
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var KEYS = objectKeys( CONTRACTIONS );
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// MAIN //
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/**
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* Expands all contractions to their formal equivalents.
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*
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* @param {string} str - string to convert
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* @throws {TypeError} must provide a primitive string
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* @returns {string} string with expanded contractions
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*
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* @example
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* var str = 'I won\'t be able to get y\'all out of this one.';
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* var out = expandContractions( str );
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* // returns 'I will not be able to get you all out of this one.'
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*
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* @example
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* var str = 'It oughtn\'t to be my fault, because, you know, I didn\'t know';
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* var out = expandContractions( str );
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* // returns 'It ought not to be my fault, because, you know, I did not know'
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*/
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function expandContractions( str ) {
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var tokens;
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var token;
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var out;
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var key;
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var i;
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var j;
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if ( !isString( str ) ) {
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throw new TypeError( 'invalid argument. Must provide a primitive string. Value: `'+str+'`.' );
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}
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out = '';
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tokens = tokenize( str, true );
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for ( i = 0; i < tokens.length; i++ ) {
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token = tokens[ i ];
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if ( isCapitalized( token ) ) {
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for ( j = 0; j < KEYS.length; j++ ) {
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key = KEYS[ j ];
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if ( uncapitalize( token ) === key ) {
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token = capitalize( CONTRACTIONS[ key ] );
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break;
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}
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}
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} else {
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for ( j = 0; j < KEYS.length; j++ ) {
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key = KEYS[ j ];
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if ( token === key ) {
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token = CONTRACTIONS[ key ];
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break;
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}
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}
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}
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out += token;
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}
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return out;
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}
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// EXPORTS //
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module.exports = expandContractions;
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