User:ZKang123/TitleCaseConverter.js

// titlecaseconverter.js

/* eslint-disable no-alert, no-console */

$( => {	/**	 * Convert titles to title case	 */	function toTitleCase( title, changeExistingCapitalization = true ) {		const isAllCaps = title.toUpperCase === title;		if ( isAllCaps ) {			title = title.toLowerCase;		}

title = title.split( ' ' ).map( ( word, index, array ) => {			// Retain words that are already in uppercase or are special cases			if ( word.toUpperCase === word || isSpecialCase( word ) ) {				return word;			}

// Retain capitalization for words following certain punctuation marks if ( index > 0 && /[/;\-,]/.test( array[ index - 1 ] ) ) { return word.charAt( 0 ).toUpperCase + word.slice( 1 ); }			// Check for mixed capitalization const hasMixedCase = /[a-z]/.test(word) && /[A-Z]/.test(word); if (hasMixedCase) { return word; }

// If there's already a capital letter in the word, we probably don't want to change it			const hasUpperCaseLetter = /[A-Z]/.test(word); if (!changeExistingCapitalization && hasUpperCaseLetter) { return word; } else if ( shouldCapitalize( word, index, array ) ) { return word.charAt( 0 ).toUpperCase + word.slice( 1 ).toLowerCase; } else { return word.toLowerCase; }		} ).join( ' ' );

// Capitalize first letters that occur after punctuation title = title.replace( / [^A-Za-z][a-z]/g, ( match ) => ' ' + match.slice( 1, 2 ) + match.slice( 2 ).toUpperCase );

// Capitalize anything after a semicolon title = title.replace( /;[a-z]/g, ( match ) => ';' + match.slice( 1 ).toUpperCase );

// Capitalize letters mid-word that occur after hyphens or slashes title = title.replace( /-[a-z]/g, ( match ) => '-' + match.slice( 1 ).toUpperCase ); title = title.replace( /\/[a-z]/g, ( match ) => '/' + match.slice( 1 ).toUpperCase );

return title; }

/**	 * Check if a word is an abbreviation or an exception */	function isSpecialCase( word ) { // Define custom exceptions for abbreviations and specific titles const exceptions = [ 'MRT', 'LTA', 'S$', 'US$', 'NASA', 'FBI', 'MP3' ]; // Add more exceptions as needed return exceptions.includes( word ) || /^[A-Z0-9]+$/.test( word ); }

function shouldCapitalize( word, index, array ) { const alwaysCapitalize = [ 'Me', 'It', 'His', 'If', 'Be', 'Am', 'Is', 'Are', 'Being', 'Was', 'Were', 'Been', 'During', 'Through', 'About', 'Until', 'Below', 'Under' ]; const doNotCapitalize = [ 'a', 'an', 'the', 'and', 'by', 'at', 'but', 'or', 'nor', 'for', 'yet', 'so', 'as', 'in', 'of', 'on', 'to', 'from', 'into', 'like', 'over', 'with', 'till', 'upon', 'off', 'per', 'up', 'out', 'via' ]; const punctuationMarks = [ '.', ',', ';', ':', '?', '!' ];

const isAbbr = isSpecialCase( word ); const isProperNoun = alwaysCapitalize.includes( word ); const isShortWord = doNotCapitalize.includes( word.toLowerCase ); const isFirstOrLastWord = index === 0 || index === array.length - 1; const isLongPreposition = word.length >= 5; const isVerb = [ 'be', 'am', 'is', 'are', 'being', 'was', 'were', 'been' ].includes( word.toLowerCase );

// Preserve capitalization after punctuation marks if ( index > 0 ) { const prevWord = array[ index - 1 ]; const lastChar = prevWord.charAt( prevWord.length - 1 ); if ( punctuationMarks.includes( lastChar ) ) { return true; }		}

return isAbbr || isFirstOrLastWord || isProperNoun || isLongPreposition || !isShortWord || isVerb; }

/**	 * Convert reference titles in the HTML content */	function convertReferenceTitles( htmlString, changeExistingCapitalization = true ) { const citationRegex = /]*>.*?<\/ref>/gi; const titleRegex = /(\|title=)([^|]+)(\|)/i;

return htmlString.replace( citationRegex, ( match ) => match.replace( titleRegex, ( titleMatch, p1, p2, p3 ) => { const originalTitle = p2.trim; const titleCaseTitle = toTitleCase( originalTitle, changeExistingCapitalization ); // Ensure space is retained at the end const endingSpace = p2.endsWith(' ') ? ' ' : '';			return `${ p1 }${ titleCaseTitle }${ endingSpace }${ p3 }`; } ) );	}

/**	 * Load the script and add the sidebar links */	function loadTitleCaseConverter { // Create the first sidebar link const sidebarLink1 = document.createElement( 'li' ); const link1 = document.createElement( 'a' ); link1.innerText = 'Convert Ref Titles to Title Case (Preserve Capitalization)'; link1.href = '#'; link1.style.cssText = 'cursor: pointer; color: #0645ad;';

// Add click event listener to the first link link1.addEventListener( 'click', ( event ) => {			event.preventDefault;			const textArea = document.querySelector( '#wpTextbox1' );			if ( textArea ) {				const summary = 'Converted reference titles to title case per MOS:CT using TitleCaseConverter';				textArea.value = convertReferenceTitles( textArea.value, false );				// Set default editing summary				const summaryInput = document.querySelector( '#wpSummary' );				if ( summaryInput && !summaryInput.value.trim ) {					summaryInput.value = summary;				}			} else {				alert( 'Error: Editing area not found!' );			}		} );

sidebarLink1.appendChild( link1 );

// Create the second sidebar link const sidebarLink2 = document.createElement( 'li' ); const link2 = document.createElement( 'a' ); link2.innerText = 'Convert Ref Titles to Title Case (Change Capitalization)'; link2.href = '#'; link2.style.cssText = 'cursor: pointer; color: #0645ad;';

// Add click event listener to the second link link2.addEventListener( 'click', ( event ) => {			event.preventDefault;			const textArea = document.querySelector( '#wpTextbox1' );			if ( textArea ) {				const summary = 'Converted reference titles to title case per MOS:CT using TitleCaseConverter';				textArea.value = convertReferenceTitles( textArea.value, true );				// Set default editing summary				const summaryInput = document.querySelector( '#wpSummary' );				if ( summaryInput && !summaryInput.value.trim ) {					summaryInput.value = summary;				}			} else {				alert( 'Error: Editing area not found!' );			}		} );

sidebarLink2.appendChild( link2 );

// Add the links to the sidebar (p-tb section) const sidebar = document.getElementById( 'p-tb' ); const ul = sidebar ? sidebar.querySelector( 'ul' ) : null; if ( ul ) { ul.appendChild( sidebarLink1 ); ul.appendChild( sidebarLink2 ); } else { alert( 'Error: Sidebar section not found!' ); }	}

function runUnitTests { const tests = [ // normal {				old: 'The South and West lines', new: 'The South and West Lines' },			{				old: 'Work on second phase of MRT system ahead of schedule', new: 'Work on Second Phase of MRT System Ahead of Schedule' },			{				old: 'Earlier target date for Phase II MRT', new: 'Earlier Target Date for Phase II MRT' },			{				old: 'MRT System to be Implemented in Eight Stages', new: 'MRT System to Be Implemented in Eight Stages' },			{				old: 'MRT to Bt Batok, Bt Gombak and Choa Chu Kang on Mar 10', new: 'MRT to Bt Batok, Bt Gombak and Choa Chu Kang on Mar 10' },			// mid-word hyphens and slashes {				old: 'Revived, re-opened, newly appreciated', new: 'Revived, Re-Opened, Newly Appreciated' },			{				old: "Streetscapes/eldridge street Synagogue;a prayer-filled time capsule from the 1880's", new: "Streetscapes/Eldridge Street Synagogue;A Prayer-Filled Time Capsule from the 1880's"			}, {				old: 'Phase 2 gets go-ahead to ensure continuity', new: 'Phase 2 Gets Go-Ahead To Ensure Continuity' },			// weird mid-word capitalization {				old: 'Phase 2 gets go-ahead to build iPad', new: 'Phase 2 Gets Go-Ahead To Build iPad' },			{				old: 'Phase 2 gets go-ahead to build DataMall', new: 'Phase 2 Gets Go-Ahead To Build DataMall' },			// all caps {				old: 'PHASE 2 GETS GO-AHEAD TO ENSURE CONTINUITY', new: 'Phase 2 Gets Go-Ahead To Ensure Continuity' },			// punctuation at beginning of word {				old: 'She was "amazingly spectacular"', new: 'She Was "Amazingly Spectacular"' }		];

let i = 1; let failures = 0; for ( const test of tests ) { const actual = toTitleCase( test.old ); if ( actual !== test.new ) { console.log( `[Titlecaseconverter.js] Failed unit test ${ i }. Received "${ actual }" instead of "${ test.new }".` ); failures++; }			i++; }		if ( !failures ) { console.log( '[Titlecaseconverter.js] All unit tests passed. Yay.' ); }	}

// Load the script when the page is ready if ( document.readyState !== 'loading' ) { loadTitleCaseConverter; } else { document.addEventListener( 'DOMContentLoaded', loadTitleCaseConverter ); }

// Put this at the top of your common.js file to run unit tests in the browser devtools console: // window.TitleCaseConverterUnitTests = true; if ( window.TitleCaseConverterUnitTests ) { runUnitTests; } } );