User:DannyS712 test/HarvErrors.js

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Documentation for this user script can be added at User:DannyS712 test/HarvErrors.

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if(window.checkLinksToCitations === undefined)
    window.checkLinksToCitations = true;
mw.loader.using( 'mediawiki.util', function () {
    $(document).ready( function () { 
//        var link = mw.util.addPortletLink( 'p-cactions', 'javascript:void(0)', 'HarvErorrs', 'ca-harv-errors', 'Check for Harvard Errors'); 
//        $( link ).click( function ( event ) {
//            event.preventDefault();
            HarvErrors();
//        } );
    } );
} );
function HarvErrors(){
	var $content = $( '#mw-content-text' );
	var has_errors = false;
    // first check: do links in Harvard citations point to a valid citation?
    var href,
    	links = $content.find( 'a[href^="#CITEREF"]' );

    links.each( function (i, elem) {
    	href = elem.getAttribute( 'href' ).substring(1); //skip the #
    	// IDs can contain characters like . that have meaning in selectors
    	// use $.escapeSelector to make sure they are escaped
        if ( $content.find( '#' + $.escapeSelector(href) ).length < 1)
            console.log( "Harv error: link from " + href + " doesn't point to any citation.");
            has_errors = true;
    } );

    // second check: do CITEREF IDs have Harvard citations pointing to them?
    if(window.checkLinksToCitations) {
        var cites = $content.find('.citation');
        for(var i=0; i < cites.length; i++) {
            var id = cites[i].getAttribute('id');
            // we only need to check citations with a
            if(!id || id.indexOf('CITEREF') !== 0)
                continue;
            // don't do cites that are inside a ref
            var parentid = cites[i].parentNode.parentNode.getAttribute('id');
            if(parentid && parentid.indexOf('cite_note') === 0)
                continue;
            // check for links to this citation
            var query = 'a[href|="#' + $.escapeSelector(id) + '"]';
            if($content.find(query).length === 0) {
                console.log( "Harv warning: There is no link pointing to this citation. The anchor is named " + id + ".");
                has_errors = true;
            }
        }
    }
    
    if (has_errors) alert("This page has Harvard errors");
}