User:Hippietrail/wfMsgCentre.js

//importScript('User:Hippietrail/hippajax.js');
document.write('<script type="text/javascript" src="/w/index.php?title=User:Hippietrail/hippajax.js&action=raw&ctype=text/javascript"><\/script>');

// uppercase first char, leave rest as is
function ucfirst(t) {
  return t.charAt(0).toUpperCase() + t.substring(1);
}

// convert a full mediawiki page title into an href
function makehref(arg) {
  return arg.match(/^http:/) ? arg : wgArticlePath.replace('$1', arg);
}

// factory
function wfMsgCentreFactory() {
}

wfMsgCentreFactory.create = function() {
  if (true) {
    if (true) {
      // fast, supports message cache; needs newer api.php with amlang
      return new wfMsgCentre_allmsgs();
    } else {
      // fast but doesn't support message cache; works on older api.php
      return new wfMsgCentre_proprev();
    }
  } else {
    // not as fast but supports message cache and doesn't need api.php
    return new wfMsgCentre_actraw();
  }
}

// overall base class
function wfMsgCentre() {
}

// non-api-derived class

wfMsgCentre_actraw.prototype = new wfMsgCentre();
wfMsgCentre_actraw.constructor = wfMsgCentre_actraw;

function wfMsgCentre_actraw() {
  if (window.console) console.log('action raw\n');
  wfMsgCentre.call(this);
}

wfMsgCentre_actraw.prototype.batch = function(msgarray) {
  function getmsg(title, forcontent) {
    function on200(req) {
      var v = req.responseText;

      var x = msgarray[title];

      if (x.xform != undefined)
        v = x.xform(v);

      x.obj[x.attr] = v;
    };

    var urls = [
      wgScriptPath + '/index.php?usemsgcache=yes&action=raw&title=MediaWiki:' + ucfirst(title) + '/' + wgUserLanguage,
      wgScriptPath + '/index.php?usemsgcache=yes&action=raw&title=MediaWiki:' + ucfirst(title)
    ];

    var index = 0;

    if (!forcontent || wgUserLanguage == wgContentLanguage)
      index = 1;

    ajax(urls[index], on200, on400);

    function on400() {
      index++;

      if (index < urls.length)
        ajax(urls[index], on200, on400);
    };
  };

  for (var m in msgarray) {
    getmsg(m, msgarray[m].forcontent);
  }
}

// api base class

wfMsgCentre_api.prototype = new wfMsgCentre();
wfMsgCentre_api.constructor = wfMsgCentre_api;

function wfMsgCentre_api() {
  wfMsgCentre.call(this);
}

wfMsgCentre_api.prototype.batch = function(msgarray) {
  var that = this;

  function on200(req) {
    var rt = eval('(' + req.responseText + ')');
    that.handleresponse(msgarray, rt);
  };

  var url = this.buildurl(msgarray);

  if (url != null) {
    ajax(url, on200, function(){});
  } else {
    if (console != undefined) console.log('no titles\n');
  }
}

// api-derived classes

// class which uses api.php to get the raw content of several mediawiki: namespace pages at once
// there is no way to access messages in the message cache but not in the mediawiki: namespace

wfMsgCentre_proprev.prototype = new wfMsgCentre_api();
wfMsgCentre_proprev.constructor = wfMsgCentre_proprev;

function wfMsgCentre_proprev() {
  if (window.console) console.log('prop revisions\n');
  wfMsgCentre_api.call(this);

  this.buildurl = function(msgarray) {
    var titles = '';

    for (var i in msgarray) {
      if (titles) titles += '|';
      titles += 'MediaWiki:' + i;
      if (msgarray[i] && wgUserLanguage != wgContentLanguage) {
        if (titles) titles += '|';
        titles += 'MediaWiki:' + i + '/' + wgUserLanguage;
      }
    }

    if (titles)
      return wgScriptPath + '/api.php?format=json&action=query&prop=revisions&rvprop=content&titles=' + titles;
    else
      return null;
  }
}
  
wfMsgCentre_proprev.prototype.handleresponse = function(msgarray, response) {
  // TODO handle error result
  var pages = response.query.pages;

  for (var p in pages) {
    if (pages[p].missing == undefined) {
      var t = pages[p].title;
      var v = pages[p].revisions[0]['*'];

      // strip any prefix and suffix
      t = t.substring(10);
      var lio = t.lastIndexOf('/' + wgUserLanguage);
      if (lio != -1)
        t = t.substring(0,lio);

      var x = msgarray[t];
      // TODO don't set nonlocalized text over localized
      if (x.xform != undefined)
        v = x.xform(v);

      x.obj[x.attr] = v;
    }
  }
}

// class which uses api.php to call wfGetMsg for several messages at once
// there is no way to access messages in the message cache but not in the mediawiki: namespace

wfMsgCentre_allmsgs.prototype = new wfMsgCentre_api();
wfMsgCentre_allmsgs.constructor = wfMsgCentre_allmsgs;

function wfMsgCentre_allmsgs() {
  if (window.console) console.log('all messages\n');
  wfMsgCentre_api.call(this);

  this.buildurl = function(msgarray) {
    var titles = '';

    for (var i in msgarray) {
      if (titles) titles += '|';
      titles += i;
    }

    if (titles)
      return wgScriptPath + '/api.php?format=json&action=query&meta=allmessages&ammessages=' + titles + '&amlang=' + wgUserLanguage;
    else
      return null;
  }
}
  
wfMsgCentre_allmsgs.prototype.handleresponse = function(msgarray, response) {
  // TODO handle error result
  var qam = response.query.allmessages;

  for (var i in qam) {
    var t = qam[i].name;
    var v = qam[i]['*'];

    if (v != '&lt;' + t + '&gt;') {
      var x = msgarray[t];
      if (x.xform != undefined)
        v = x.xform(v);
      x.obj[x.attr] = v;
    }
  }
}