Implemented URL sharing

js/app.js

@@ -15,6 +15,11 @@ function saveBlob(blob, fname, successCb, errorCb) {
   freeSpaceReq.onerror = errorCb
 }
 
+function hi2gopher(hiurl) {
+  var parts = hiurl.split(':')[1].split('|')
+  return 'gopher://'+parts[2]+':'+parts[3]+'/'+parts[0]+parts[1]
+}
+
 function openURL(url, successCb, errorCb) {
   if(url.startsWith('about:')) { // handle about: pages first
     var pageName = url.split(':')[1], allowedPageNames = ['kopher', 'blank', 'help']
@@ -267,6 +272,23 @@ addEventListener('DOMContentLoaded', function() {
         if(currentUrl && confirm('Save current URL as the homepage?'))
           setBookmark(0, currentUrl)
         break
+      case '*Call': // share current URL as text in messages/email or via Bluetooth in vCard format
+        var hgoph = hi2gopher(currentUrl), htype = 'text/vcard',
+            btext = 'BEGIN:VCARD\r\nVERSION:2.1\r\nN:'+hgoph+'\r\nURL:'+hgoph+'\r\nEND:VCARD',
+            hblob = new Blob([btext], {type: htype}),
+            hname = hgoph.replace(/[\/:]+/g, '_') + '.vcf'
+        hblob.name = hname
+        new MozActivity({
+          name: 'share',
+          data: {
+            type: 'url',
+            number: 1,
+            url: hgoph,
+            blobs: [hblob],
+            filenames: [hname]
+          }
+        })
+        break
       case '#1': // load bookmark
       case '#2':
       case '#3':