User:Jnothman/automod.js

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//<pre>

/* Edits a page according to parameters passed in the URL.
   e.g. http://en.wikipedia.org/w/index.php?title=Foo&action=edit&amaddbefore=My+text&amsummary=Adding+My+text
        will add the words "My text" at the start of the Foo article (on a new line),
        with the given edit summary.
   Other parameters include:
    - amaddafter - adds text at the end of the article
    - amatstring - makes amaddafter/before add after/before the first occurrence of the given string
    - amclear    - clears the article before adding text
    - amfind and amreplace - replaces all occurrences of the find string by the replace string
*/

if ((typeof auto_mod_loaded == 'undefined')
    || !auto_mod_loaded) {
auto_mod_loaded = true;
auto_mod_exectd = false;

function am_make_url(title, before, after, summary) {
    return 'http://en.wikipedia.org/w/index.php?title='+escape(title)+
        '&action=edit'+
        '&amaddbefore='+escape(before)+'&amaddafter='+escape(after)+
        '&amsummary='+escape(summary);
}

function am_get_title() {
    //Avoids problems with &amp; etc, but will also include ' - edit this page', etc
    return document.title.substr(0, document.title.lastIndexOf(' - Wikipedia, the free'));
}

function am_tidy_title()
{
  var editlk = document.getElementById('ca-edit').getElementsByTagName('a')[0].href;
  editlk = editlk.substring(editlk.indexOf('title=') + 6, editlk.lastIndexOf('&action=edit'));
  return unescape(editlk);
}

function am_get_query_vars(){ 
     var res = new Array();
     var pairs = location.search.substring(1).split("&"); 
     for(var i=0; i < pairs.length; i++){ 
         var pair = pairs[i].split("=");
         res[unescape(pair[0])] = unescape(pair[1]).replace(/\+/g, ' ');
     } 
     return  res; 
}

function am_add_li(portlet, url, text, id, title) {
    var tabs = document.getElementById('p-'+portlet).getElementsByTagName('ul')[0]
    var na = document.createElement('a');
    na.href = url;
    na.id = id;
    na.appendChild(document.createTextNode(text));
    if (title)
       na.title = title;
    var li = document.createElement('li');
    if (id)
       li.id = id;
    li.appendChild(na);
    tabs.appendChild(li);
    return li;
}

function am_guess_date() {
    var monthnames = new Array( "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December");
    var today = new Date();
    return today.getUTCFullYear() + ' ' + monthnames[today.getUTCMonth()] + ' ' + today.getUTCDate();
}

function am_edit_string(s, insertion, loc) {
    return s.substring(0, loc) + insertion + s.substring(loc);
}

function auto_mod() {
    if (auto_mod_exectd)
        return false;
    auto_mod_exectd = true;
    qvars = am_get_query_vars();
    if (qvars['action']=='edit') {
      if (qvars['amnull']) {
        document.getElementById('editform').submit();
        return true;
      }
      if (qvars['amaddafter'] || qvars['amaddbefore'] || qvars['amreplace']) {
        var summ_el = document.getElementById('wpSummary');
        if (summ_el.value != '' && summ_el.value.substr(summ_el.value.length - 3, 3) != '*/ ') {
            // have already added summary
            return true;
        }
        var text = document.getElementById('wpTextbox1');
        if (qvars['amclear'])
            text.value = '';
        if (qvars['amfind'] && qvars['amreplace'])
            text.value = text.value.replace(new RegExp(qvars['amfind'], "g"), qvars['amreplace']);
        if (qvars['amaddafter']) {
            var loc = text.value.length;
            if (qvars['amatstring']) {
                var newloc = text.value.indexOf(qvars['amatstring']);
                if (newloc > -1) {
                    loc = newloc + qvars['amatstring'].length;
                }
            }

            var toadd = qvars['amaddafter'];
            if ((loc == text.value.length && text.value.charAt(loc - 1) != '\n') || '\n\r'.indexOf(text.value.charAt(loc)) > -1)
                toadd = '\n' + toadd;
            text.value = am_edit_string(text.value, toadd, loc);
        }
        if (qvars['amaddbefore']) {
            var loc = 0;
            if (qvars['amatstring']) {
                var newloc = text.value.indexOf(qvars['amatstring']);
                if (newloc > -1) {
                    loc = newloc;
                }
            }

            var toadd = qvars['amaddbefore'];
            if ((loc == 0 && text.value.charAt(loc) != '\n') || '\n\r'.indexOf(text.value.charAt(loc - 1)) > -1)
                toadd += '\n';
            text.value = am_edit_string(text.value, toadd, loc);
        }
        summ_el.value += (qvars['amsummary'] || ' ');
        document.getElementById('editform').submit();
      }
      return true;
    }
    return false;
}

function am_add_onload(f) {
  // borrowed from [[WP:US]]
  if (window.addEventListener) window.addEventListener("load",f,false);
  else if (window.attachEvent) window.attachEvent("onload",f);
}


} // end if auto_mod_loaded

//</pre>