Wikipedysta:Saper/scripts/redir.js

// ==UserScript==
// @name           Fix redirects
// @namespace      mediawiki
// @description    Replace redirects with the target articlename
// @include        *
// ==/UserScript==

addOnloadHook(function start()
{
    // user error messages
    var NoAjaxError = new Error("Przeglądarka nie obsługuje AJAX");
    var NoLocationError = new Error
            ("Nie mogę znaleźć adresu bieżącej strony");
    var    NoEditBoxError = new Error
            ("Nie mogę znaleźć okna edycji");
    var    CannotQueryAPIError = new Error
            ("MediaWiki zwraca błąd w zapytaniu o przekierowania");

    // Summary text generation
    var SummaryText = "Zmiana linków do przekierowań";
    // used is summary was non-empty
    var ExistingSummarySeparator = ", ";
    var SummaryTextSubsequent = "zmiana linków do przekierowań";
    // separates above text from the links
    var AfterSummaryTextSeparator = " ";
    // separates every reported link
    var ReplacementSummarySeparator = ", ";
    // how many links to mention in the summary
    var MaxSummaryItems = 4;
    // what to say when there are more links than MaxSummaryItems
    var MoreThanMaxSummaryItems = "...";
    // using a right-to-left language? no problem!
    var SummaryRightToLeft = false;

    var args = new Object();
    var location = window.location;
    var redirects;
    var ajax;

    var foreachtag = function(startnode, tag, action) {
        if (startnode) {
            var tag_list = startnode.getElementsByTagName(tag);
            for (var i = 0; i < tag_list.length; i++)
                action(tag_list);
        }
    }

    var replace_function = function () {
        var editbox = document.getElementById('wpTextbox1');
        var summarybox = document.getElementById('wpSummary');
        if (!ajax)
            throw NoAjaxError();
        if (!editbox)
            throw NoEditBoxError;
        if (ajax.readyState == 4) {
            if (ajax.status == 200) {
                var edit_text = editbox.value;
                var link_match;
                var link_label;
                var replacements = new Array();
                var summary = new Array();
                var changed = false;

                foreachtag(ajax.responseXML, "r", function(r) {
                    re = new RegExp("\\[\\[\\s*(" +
                        r.getAttribute("from") + ")\\s*" +
                        "(\\|\\s*(.*)\\s*)?\\]\\]", "gi")
                    while ((link_match = re.exec(edit_text)) != null) {
                            if (link_match)
                                link_label = link_match.replace(/\|\s*/, "").replace(/\s*$/, "")
                            else
                                link_label = r.getAttribute("from")
                            if (link_label != r.getAttribute("to"))
                                link_label = r.getAttribute("to") + "|" + link_label;
                            var new_text = edit_text.replace(link_match,
                                "]");
                            if (new_text != edit_text) 
                                changed = true
                            edit_text = new_text;
                    };
                    if (changed) {
                        changed = false;
                        if (replacements.length < MaxSummaryItems) {
                           replacements.push("]")
                        }
                        if (replacements.length == MaxSummaryItems)
                           replacements.push(MoreThanMaxSummaryItems)
                    }
                });

                if (replacements.length > 0) {
                    if (summarybox.value.length > 0) {
                        summary.push(summarybox.value);
                        summary.push(ExistingSummarySeparator);
                        summary.push(SummaryTextSubsequent);
                    } else
                        summary.push(SummaryText);
                    summary.push(AfterSummaryTextSeparator);
                    if (SummaryRightToLeft)
                        replacements = replacements.reverse();
                    summary.push(replacements.join(ReplacementSummarySeparator));
                    if (SummaryRightToLeft)
                        summary = summary.reverse();

                    summarybox.value = summary.join("");                    
                 }
                 editbox.value = edit_text;
            } else
                throw CannotQueryAPIError;
        }
    };

    try {
        if (!location)
            throw NoLocationError;

        var parameters = location.search.split("&");
        for (i in parameters) {
            name_value = parameters.split("=");
            if (name_value.length == 2)
                args)] = unescape(name_value);
        }
        switch(args.action) {
        case 'edit':
            if (args.fixredir) {
                redirects = unescape(args.fixredir);

                //from QuickEdit 2 by ASM, modified
                if (window.XMLHttpRequest) {
                    ajax = new XMLHttpRequest();
                    if (ajax.overrideMimeType)
                        ajax.overrideMimeType('text/xml');
                } else if (window.ActiveXObject) {
                    ajax = new ActiveXObject('Microsoft.XMLHTTP');
                } else
                    throw NoAjaxError;

                var url = location.protocol + "//" + location.host +
                    "/w/api.php?action=query&redirects&format=xml" +
                    "&titles=" + args.fixredir;
                ajax.open("GET", url, true);
                ajax.onreadystatechange = replace_function;
                ajax.send(null);
            }
            break;
        default:
            // Find all <a title="xxx" class="mw-redirect"> links
            var body_content = document.getElementById('bodyContent') ||
                document.getElementById('article');

            var redirect_object = new Object();
            foreachtag(body_content, 'a', function(link) {
                if (link.className == 'mw-redirect')
                    if (! redirect_object)
                        redirect_object = link.title
            });
            var redirect_list = new Array();
            for (var i in redirect_object)
                redirect_list.push(i);
            redirects = redirect_list.join("|");
        }
        if (redirects) {
            // Iterate links on a page to find edit links
            // This way even links on an edit page are changed
            // (Do we want this?)
            foreachtag(document, 'a', function(link) {
                if (link.href)
                    if (link.href.indexOf("action=edit") >= 0 &&
                        link.className != "new")
                        link.href += "&fixredir=" +
                                 escape(redirects);
            });
        }
    } catch(e) {
        alert(e.message);
    }
});