4 files changed, 63 insertions, 51 deletions

diff --git a/content/Makefile.am b/content/Makefile.am
index 8548400..d8607fb 100644
--- a/content/Makefile.am
+++ b/content/Makefile.am
@@ -1,22 +1,22 @@
 xpichromecontent_DATA = \
         autoconf.dtd \
         browser.xul about.xul fireflix-panel.xul photoset-props.xul \
         generated-content.xul \
-        photoset-props.js fireflix.js flickr.js md5.js \
+        photoset-props.js fireflix.js flickr.js util.js md5.js \
         generated-content.js \
         fireflix.css \
         background.jpeg
 
 sized_icons = \
         $(addsuffix .png, \
          fireflix \
         )
 
 nobase_xpichromecontent_DATA = \
         $(addprefix icons/, \
          $(addprefix 16x16/,${sized_icons}) \
          $(addprefix 32x32/,${sized_icons}) \
         )
 
 EXTRA_DIST = \
         ${xpichromecontent_DATA} ${nobase_xpichromecontent_DATA}
diff --git a/content/fireflix-panel.xul b/content/fireflix-panel.xul
index 569beb0..2a15a51 100644
--- a/content/fireflix-panel.xul
+++ b/content/fireflix-panel.xul
@@ -1,208 +1,209 @@
 <?xml version="1.0"?>
 <?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
 <?xml-stylesheet href="fireflix.css" type="text/css"?>
 <!DOCTYPE page SYSTEM "chrome://fireflix/locale/fireflix.dtd">
 <page
  xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
  id="fireflixwindow" title="Fireflix"
  onload="fireflix.init()"
  orient="vertical"
  ondragover="nsDragAndDrop.dragOver(event,fireflix.uploadObserver)"
  ondragdrop="nsDragAndDrop.drop(event,fireflix.uploadObserver)"
  >
 
  <script src="chrome://global/content/nsDragAndDrop.js"/>
  <script src="chrome://global/content/nsTransferable.js"/>
  <script type="application/x-javascript" src="md5.js" />
+ <script type="application/x-javascript" src="util.js" />
  <script type="application/x-javascript" src="flickr.js" />
  <script type="application/x-javascript" src="fireflix.js" />
 
  <stringbundleset>
   <stringbundle id="loc_strings" src="chrome://fireflix/locale/fireflix.properties" />
  </stringbundleset>
 
  <commandset>
   <command id="cmd_auth_auth" label="&panel.auth.auth.label;"
   oncommand="fireflix.on_cmd_auth()"/>
   <command id="cmd_auth_done" label="&panel.auth.done.label;"
   oncommand="fireflix.on_cmd_auth_done()" disabled="true"/>
   <command id="cmd_auth_open_flickr" label="&panel.auth.flickr.label;"
   oncommand="fireflix.openTab('htp://www.flickr.com/')" />
   <command id="cmd_auth_unauth" label="&panel.auth.unauth.label;"
   oncommand="fireflix.on_cmd_auth_unauth()" />
  </commandset>
  
  <popupset>
   <popup id="auth_menu">
    <menuitem command="cmd_auth_auth"/>
    <menuitem command="cmd_auth_done" hidden="true" id="menu_auth_done"/>
    <menuitem command="cmd_auth_unauth" />
    <menuseparator/>
    <menuitem command="cmd_auth_open_flickr"/>
   </popup>
  </popupset>
 
  <commandset id="cmdset_search">
   <command id="cmd_search" label="&panel.search.cmd_search.label;"
   oncommand="fireflix.foundphotos.search_photos()"/>
   <command id="cmd_search_open" label="&panel.search.cmd_search_open.label;"
   oncommand="fireflix.foundphotos.on_cmd_open(event)" />
  </commandset>
 
  <commandset id="cmdset_sets">
   <command id="cmd_refresh_sets" label="&panel.sets.cmd_refresh_sets;"
   oncommand="fireflix.on_refresh_sets()" />
   <command id="cmd_set_props" label="&panel.sets.cmd_properties;"
   oncommand="fireflix.on_set_props()" disabled="true" />
  </commandset>
 
  <popupset>
   <popup id="sets_menu">
    <menuitem command="cmd_set_props"/>
    <menuitem command="cmd_refresh_sets"/>
    <menuseparator/>
    <menu label="&panel.sets.generate_html;" id="sets_html_menu"/>
   </popup>
  </popupset>
 
  <commandset id="cmdset_uploads">
   <command id="cmd_uploads_clear" label="&panel.uploads.clear.label;"
   oncommand="fireflix.uploads.on_clear()" />
   <command id="cmd_uploads_upload" label="&panel.uploads.upload.label;"
   oncommand="fireflix.uploads.on_upload()" />
   <command id="cmd_uploads_remove" label="&panel.uploads.remove.label;"
   oncommand="fireflix.uploads.on_remove()" />
   <command id="cmd_uploads_add" label="&panel.uploads.add.label;"
   oncommand="fireflix.uploads.on_add()" />
  </commandset>
 
  <popupset>
   <popup id="uploads_menu">
    <menuitem command="cmd_uploads_add"/>
    <menuitem command="cmd_uploads_clear"/>
    <menuitem command="cmd_uploads_remove"/>
    <menuseparator/>
    <menuitem command="cmd_uploads_upload"/>
    <menuseparator/>
    <menu label="&panel.uploads.generate_html;" id="uploads_html_menu"/>
   </popup>
  </popupset>
 
  <vbox class="wholething" flex="1">
 
   <groupbox context="auth_menu">
    <caption label="&panel.auth_info;"/>
    <hbox>
     <label id="auth_info" value="&panel.no_auth_info;" flex="1" disabled="true" crop="end"/>
     <button id="b_auth" command="cmd_auth_auth"/>
     <button id="b_auth_done" command="cmd_auth_done" hidden="true"/>
     <button command="cmd_auth_open_flickr" 
     tooltiptext="&panel.auth.flickr.tip;"/>
    </hbox>
   </groupbox>
 
   <tabbox flex="1" id="fireflix_tabs">
 
    <tabs>
     <tab label="&panel.tabs.search;"/>
     <tab label="&panel.tabs.sets;"/>
     <tab label="&panel.tabs.tags;" hidden="true"/> <!-- TODO: -->
     <tab id="tab_upload" label="&panel.tabs.upload;"/>
    </tabs>
 
    <tabpanels flex="1">
 
     <tabpanel id="tabpanel_search" flex="1">
      <vbox flex="1">
       <groupbox class="search_params" orient="vertical" onkeypress="if(event.keyCode==event.DOM_VK_RETURN) fireflix.foundphotos.search_photos()">
        <hbox>
         <label control="search_for" value="&panel.search.search_for.label;"
         accesskey="s"/>
         <textbox id="search_for" flex="1"/>
        </hbox>
        <hbox>
         <checkbox id="search_tags" label="&panel.search.mode.tagsonly.label;"
         tooltiptext="&panel.search.mode.tagsonly.tip;" checked="false"
         accesskey="t" />
         <checkbox id="search_mine" label="&panel.search.mode.mine.label;" checked="true" accesskey="m"/>
         <spacer flex="1"/>
         <button command="cmd_search"/>
        </hbox>
       </groupbox>
       <tree id="searchresults" rows="2" flex="1"
       onselect="fireflix.foundphotos.on_select()"
       ondblclick="fireflix.foundphotos.on_cmd_open(event)"
       onkeypress="if(event.keyCode==event.DOM_VK_RETURN)
       fireflix.foundphotos.on_cmd_open(event)">
        <treecols>
         <treecol id="sr_title" label="&panel.search.col.title.label;" flex="2" crop="end" align="start" />
        </treecols>
        <treechildren/>
       </tree>
       <groupbox id="searchresult_props" orient="horizontal" hidden="true">
        <vbox width="100" pack="center">
         <hbox pack="center">
          <image id="search_photo"/>
         </hbox>
        </vbox>
        <vbox flex="1">
         <label id="searchresult_title"/>
         <textbox flex="1" multiline="true" class="plain" readonly="true" id="searchresult_description"/>
         <hbox pack="end">
          <button command="cmd_search_open"/>
         </hbox>
        </vbox>
       </groupbox>
      </vbox>
     </tabpanel>
 
     <tabpanel id="tabpanel_sets" flex="1"
      onkeypress="if(event.keyCode==event.DOM_VK_RETURN)
      document.getElementById('setphotos').focus()">
      <vbox flex="1">
       <tree id="setslist" rows="2" onselect="fireflix.photosets.on_select()"
       flex="1" context="sets_menu"
       >
        <treecols>
         <treecol id="sl_name" label="&panel.sets.name.label;" flex="4" crop="end" align="start" tooltiptext="&panel.sets.name.tip;"/>
         <splitter class="tree-splitter" />
         <treecol id="sl_photos" label="&panel.sets.photos.label;" flex="1" align="end" tooltiptext="&panel.sets.photos.tip;" />
        </treecols>
        <treechildren/>
       </tree>
       <hbox>
        <button command="cmd_refresh_sets" />
        <button command="cmd_set_props" />
       </hbox>
       <tree id="setphotos" rows="2" onselect="fireflix.photoset.on_select()"
       flex="1">
        <treecols>
         <treecol id="sp_title" label="&panel.setphotos.title.label;" flex="1" crop="end" align="start" tooltiptext="&panel.setphotos.title.tip;" />
         <splitter class="tree-splitter" />
         <treecol id="sp_taken" label="&panel.setphotos.taken.label;" crop="end" align="start" tooltiptext="&panel.setphotos.taken.tip;" hidden="true" />
         <treecol id="sp_upload" label="&panel.setphotos.upload.label;" crop="end" align="start" tooltiptext="&panel.setphotos.upload.tip;" hidden="true" />
        </treecols>
        <treechildren/>
       </tree>
       <groupbox id="set_photo_props" orient="horizontal">
        <vbox width="100" pack="center">
         <hbox pack="center">
          <image id="set_photo" hidden="true"/>
         </hbox>
        </vbox>
        <spacer flex="1"/>
       </groupbox>
      </vbox>
     </tabpanel>
 
     <tabpanel id="tabpanel_tags">
      <listbox id="tagslist" rows="8" flex="1">
       <listhead>
        <listheader label="&panel.tagslist.tag.label;"/>
       </listhead>
       <listcols>
        <listcol flex="1"/>
       </listcols>
      </listbox>
     </tabpanel>
 
diff --git a/content/flickr.js b/content/flickr.js
index 3554796..add628a 100644
--- a/content/flickr.js
+++ b/content/flickr.js
@@ -1,333 +1,283 @@
 /*
  * Photoset
  */
 
 function Photoset(s) {
  if(s instanceof Photoset) {
    for(var p in s) this[p]=s[p];
  }else
   this.fromNode(s);
 }
 Photoset.prototype = {
  id: null,
  primary: null,
  secret: null,
  server: null,
  photos: null,
  title: null,
  description: null,
  fromNode: function(n) {
   this.id = n.getAttribute('id');
   this.primary = n.getAttribute('primary');
   this.secret = n.getAttribute('secret');
   this.server = n.getAttribute('server');
   this.photos = n.getAttribute('photos');
   this.title = n.getElementsByTagName('title').item(0).firstChild.nodeValue;
   this.description = n.getElementsByTagName('description').item(0).firstChild;
   if(this.description) this.description = this.description.nodeValue;
  }
 };
 
 /*
  * Photo
  */
 function Photo(s) {
  if(s instanceof Photo) {
   for(var p in s) this[p]=s[p];
  }else
   this.fromNode(s);
 }
 Photo.prototype = {
  id: null, secret: null,
  server: null,
  title: null,
  isprimary: null,
  license: null,
  dateupload: null, datetaken: null, datetakengranularity: null,
  ownername: null,
  iconserver: null,
  originalformat: null,
  lastupdate: null,
  fromNode: function(n) {
   this.id = n.getAttribute('id'); this.secret = n.getAttribute('secret');
   this.server = n.getAttribute('server');
   this.title = n.getAttribute('title');
   this.isprimary = n.getAttribute('isprimary');
   this.license = n.getAttribute('license');
   this.dateupload = n.getAttribute('dateupload');
   this.datetaken = n.getAttribute('datetaken'); this.datetakengranularity = n.getAttribute('datetakengranularity');
   this.ownername = n.getAttribute('ownername');
   this.iconserver = n.getAttribute('iconserver');
   this.originalformat = n.getAttribute('originalformat');
   this.lastupdate = n.getAttribute('lastupdate');
  },
  fromNode_: function(n) {
   var t;
   // TODO: @rotation @isfavorite
   this.owner = {};
   t = n.getElementsByTagName('owner').item(0);
   if(t) {
    this.owner.nsid=t.getAttribute('nsid');
    this.owner.username=t.getAttribute('username');
    this.owner.realname=t.getAttribute('realname');
    this.owner.location=t.getAttribute.location;
   }
   t = n.getElementsByTagName('description').item(0);
   if(t && t.firstChild) {
    this.description = t.firstChild.nodeValue;
   }
   // TODO: visibility/@ispublic visibility/@isfriend visibility/@isfamily 
   // TODO: dates/@posted dates/@taken dates/@takengranularity dates/@lastupdate
   // TODO: permissions/@permcomment permsiions/@permaddmeta
   // TODO: editability/@canaddcomment editability/@canaddmeta
   // TODO: comments
   // TODO: notes/note/@id notes/note/@author notes/note/@authorname
   // TODO: notes/note/@x notes/note/@y notes/note/@w notes/note/@h
   // TODO: notes/note
   // TODO: tags/tag/@id tags/tag/@author tags/tag/@raw tags/tag
   // TODO: urls/url/@type urls/url
  }
 };
 
-function toutf8(ucode) {
- var rv = '';
- for(var i=0;i<ucode.length;++i) {
-  var cc = ucode.charCodeAt(i);
-  if(cc<=0x7F)
-   rv += ucode.charAt(i);
-  else if(cc<=0x7ff)
-   rv += String.fromCharCode(
-    0xc0|((cc>> 6)&0x1f),
-    0x80|( cc     &0x3f) );
-  else if(cc<=0xffff)
-   rv += String.fromCharCode(
-    0xe0|((cc>>12)&0x0f),
-    0x80|((cc>> 6)&0x3f),
-    0x80|( cc     &0x3f) );
-  else if(cc<=0x1fffff)
-   rv += String.fromCharCode(
-    0xf0|((cc>>18)&0x07),
-    0x80|((cc>>12)&0x3f),
-    0x80|((cc>> 6)&0x3f),
-    0x80|( cc     &0x3f) );
-  else if(cc<=0x03ffffff)
-   rv += String.fromCharCode(
-    0xf8|((cc>>24)&0x03),
-    0x80|((cc>>18)&0x3f),
-    0x80|((cc>>12)&0x3f),
-    0x80|((cc>> 6)&0x3f),
-    0x80|( cc     &0x3f) );
-  else if(cc<=0x7fffffff)
-   rv += String.fromCharCode(
-    0xfc|((cc>>30)&0x01),
-    0x80|((cc>>24)&0x3f),
-    0x80|((cc>>18)&0x3f),
-    0x80|((cc>>12)&0x3f),
-    0x80|((cc>> 6)&0x3f),
-    0x80|( cc     &0x3f) );
- }
- return rv;
-}
-function xp_str(xp,x) {
- var rv = x.evaluate(
-  xp, x, null, XPathResult.STRING_TYPE, null );
- return rv.stringValue;
-}
-function xp_node(xp,x) {
- var rv = x.evaluate(
-  xp, x, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null );
- return rv.singleNodeValue;
-}
-
 function Flickr() { }
 Flickr.prototype = {
 
  rest_url: 'http://www.flickr.com/services/rest/',
  auth_url: 'http://flickr.com/services/auth/',
  photo_url: 'http://static.flickr.com/',
  photos_url: 'http://www.flickr.com/photos/',
  upload_url: 'http://www.flickr.com/services/upload/',
 
  api_sig: function(paramstr) {
   return MD5(toutf8(this.api_shs+paramstr));
  },
  api_call_url: function(params,url) {
   params.api_key = this.api_key;
   var pp = new Array();
   for(var p in params) {
    pp.push(p);
   }
   var pstr = '';
   var rv = (url?url:this.rest_url)+'?';
   for(var p in pp.sort()) {
    var pn = pp[p];
    pstr += pn+params[pn];
    rv += pn+'='+params[pn]+'&';
   }
   rv += 'api_sig='+this.api_sig(pstr);
   return rv;
  },
  api_call: function(params, on_success, on_failure) {
   if(params.auth_token == 'default')
    params.auth_token = this.token;
   var x = new XMLHttpRequest();
   x.open("GET",this.api_call_url(params));
   x.onreadystatechange=function() {
    if(x.readyState!=4) return false;
    if(x.status==200) {
     var stat = x.responseXML.firstChild.getAttribute('stat');
     if(stat=='ok') {
      if(on_success) on_success(x);
     }else{
      var e = x.responseXML.getElementsByTagName('err').item(0);
      var ecode = e.getAttribute('code');
      var emsg = e.getAttribute('msg');
      dump(params.method+' failed: '+ecode+' '+emsg+'\n');
      if(on_failure) on_failure(x,stat,ecode,emsg);
     }
    }else{
     if(on_failure) on_failure(x);
    }
    return true;
   }
   x.send(null);
   return true;
  },
 
  frob: null,
  authorize_0: function(on_s, on_f) {
   var _this = this;
   this.api_call(
    { method: 'flickr.auth.getFrob' },
    function(x) {
     _this.frob = xp_str('/rsp/frob',x.responseXML);
     var u = _this.api_call_url(
      { frob: _this.frob, perms: 'delete' }, _this.auth_url );
     var wm = Components.classes['@mozilla.org/appshell/window-mediator;1'].getService(
      Components.interfaces.nsIWindowMediator );
     var bw = wm.getMostRecentWindow('navigator:browser');
     var b = bw.getBrowser();
     var t = b.addTab(u);
     b.selectedTab = t;
     if(on_s) on_s();
    }, function(x,s,c,m) {
     if(on_f) on_f(x,s,c,m);
    }
   );
  },
  token: null,
  perms: null,
  user: null,
  authorize_1: function(on_s, on_f) {
   var _this = this;
   this.api_call(
    { method: 'flickr.auth.getToken', frob: this.frob },
    function(x) {
     _this.token = xp_str('/rsp/auth/token',x.responseXML);
     _this.perms = xp_str('/rsp/auth/perms',x.responseXML);
     var u = xp_node('/rsp/auth/user',x.responseXML);
     _this.user = {
      nsid: u.getAttribute('nsid'),
      username: u.getAttribute('username'),
      fullname: u.getAttribute('fullname')
     };
     if(on_s) on_s(x);
    }, function(x,s,c,m) {
     if(on_f) on_f(x,s,c,m);
    }
   );
  },
 
  prefs: Components.classes['@mozilla.org/preferences-service;1'].getService(
   Components.interfaces.nsIPrefBranch
  ),
  prefs_root: 'net.klever.kin.flickr',
  save_token: function() {
   // TODO: don't clear when there's nothing to clear or catch exceptions
   if(this.token)
    this.prefs.setCharPref(this.prefs_root+'.auth_token',this.token);
   else
    this.prefs.clearUserPref(this.prefs_root+'.auth_token');
   if(this.perms)
    this.prefs.setCharPref(this.prefs_root+'.auth_perms',this.perms);
   else
    this.prefs.clearUserPref(this.prefs_root+'.auth_perms');
   if(this.user && this.user.nsid!=null && this.user.nsid!=undefined)
    this.prefs.setCharPref(this.prefs_root+'.auth_user.nsid',this.user.nsid);
   else
    this.prefs.clearUserPref(this.prefs_root+'.auth_user.nsid');
   if(this.user && this.user.username!=null && this.user.username!=undefined)
    this.prefs.setCharPref(this.prefs_root+'.auth_user.username',this.user.username);
   else
    this.prefs.clearUserPref(this.prefs_root+'.auth_user.username');
   if(this.user && this.user.fullname!=null && this.user.fullname!=undefined)
    this.prefs.setCharPref(this.prefs_root+'.auth_user.fullname',this.user.fullname);
   else
    this.prefs.clearUserPref(this.prefs_root+'.auth_user.fullname');
  },
  _reset_token: function() {
   this.token = null; this.perms = null; this.user = null;
   return false;
  },
  load_token: function() {
   try {
    if(this.prefs.getPrefType(this.prefs_root+'.auth_token')!=this.prefs.PREF_STRING)
     return this._reset_token();
    this.token = this.prefs.getCharPref(this.prefs_root+'.auth_token');
    if(this.prefs.getPrefType(this.prefs_root+'.auth_perms')!=this.prefs.PREF_STRING)
     return this._reset_token();
    this.perms = this.prefs.getCharPref(this.prefs_root+'.auth_perms');
    if(this.prefs.getPrefType(this.prefs_root+'.auth_user.nsid')!=this.prefs.PREF_STRING)
     return this._reset_token();
    this.user = new Object();
    this.user.nsid = this.prefs.getCharPref(this.prefs_root+'.auth_user.nsid');
    if(this.prefs.getPrefType(this.prefs_root+'.auth_user.username')!=this.prefs.PREF_STRING)
     return this._reset_token();
    this.user.username = this.prefs.getCharPref(this.prefs_root+'.auth_user.username');
    if(this.prefs.getPrefType(this.prefs_root+'.auth_user.fullname')!=this.prefs.PREF_STRING)
     return this._reset_token();
    this.user.fullname = this.prefs.getCharPref(this.prefs_root+'.auth_user.fullname');
   }catch(e) { return this._reset_token(); }
   return true;
  },
  reset_token: function() {
   this._reset_token();
   this.save_token();
  },
 
  get_photo_url: function(ser,id,sec,sfx,ext) {
   var rv = this.photo_url + ser + '/' + id + '_' + sec;
   if(sfx && sfx!='_') rv += '_'+sfx;
   rv += ext?'.'+ext:'.jpg';
   return rv;
  },
  get_image_url: function(o,sfx) {
   return this.get_photo_url(
    o.server,
    (o instanceof Photoset)? o.primary : o.id,
    o.secret,
    sfx,
    (sfx=='o')?o.originalformat:null
   );
  },
  get_photo_page_url: function(p) {
   if(p instanceof Photo) // TODO: half wrong, what if no owner?
    return this.photos_url + (p.owner.nsid?p.owner.nsid:this.user.nsid) + '/' + p.id;
   else // TODO: take owner into account?
    return this.photos_url + this.user.nsid + '/' + p;
  },
  make_photo_url: function(p,sfx) {
   if(sfx=='p')
    return this.get_photo_page_url(p);
   else
    return this.get_image_url(p,sfx);
  },
 
  upload_file: function(f,fa,on_success,on_failure) {
   try {
    var fi = Components.classes["@mozilla.org/file/local;1"]
     .createInstance(Components.interfaces.nsILocalFile);
    fi.initWithPath( f );
    var st = Components.classes["@mozilla.org/network/file-input-stream;1"]
     .createInstance(Components.interfaces.nsIFileInputStream);
    st.init(fi,0x01,00004,null);
diff --git a/content/util.js b/content/util.js
new file mode 100644
index 0000000..5af0978
--- a/dev/null
+++ b/content/util.js
@@ -0,0 +1,61 @@
+/*
+ * convert unicode string to utf-8 representation.
+ * needed for correct md5 hash calculation.
+ */
+function toutf8(ucode) {
+ var rv = '';
+ for(var i=0;i<ucode.length;++i) {
+  var cc = ucode.charCodeAt(i);
+  if(cc<=0x7F)
+   rv += ucode.charAt(i);
+  else if(cc<=0x7ff)
+   rv += String.fromCharCode(
+    0xc0|((cc>> 6)&0x1f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0xffff)
+   rv += String.fromCharCode(
+    0xe0|((cc>>12)&0x0f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0x1fffff)
+   rv += String.fromCharCode(
+    0xf0|((cc>>18)&0x07),
+    0x80|((cc>>12)&0x3f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0x03ffffff)
+   rv += String.fromCharCode(
+    0xf8|((cc>>24)&0x03),
+    0x80|((cc>>18)&0x3f),
+    0x80|((cc>>12)&0x3f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+  else if(cc<=0x7fffffff)
+   rv += String.fromCharCode(
+    0xfc|((cc>>30)&0x01),
+    0x80|((cc>>24)&0x3f),
+    0x80|((cc>>18)&0x3f),
+    0x80|((cc>>12)&0x3f),
+    0x80|((cc>> 6)&0x3f),
+    0x80|( cc     &0x3f) );
+ }
+ return rv;
+}
+
+/*
+ * extract xpath-specified string value
+ */
+function xp_str(xp,x) {
+ var rv = x.evaluate(
+  xp, x, null, XPathResult.STRING_TYPE, null );
+ return rv.stringValue;
+}
+/*
+ * extract xpath-specified node
+ */
+function xp_node(xp,x) {
+ var rv = x.evaluate(
+  xp, x, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null );
+ return rv.singleNodeValue;
+}
+