Tentative prerelease support. Unfortunately requires the rewrite of most of the scripts, as it might provide multiple versions.

loaih/versions.py

@@ -30,6 +30,16 @@ class BuildVersion(object):
         else:
             # String self.versions.
             a = self.__getbranchrel(self.query)
+
+            if isinstance(a, list):
+                # If it's a list, a number of releases are provided.
+                self.version = []
+                self.basedirurl = []
+                for i in range(len(a)):
+                    self.version[i] = self.__getlatestrel(a[i]['version'])
+                    self.basedirurl[i] = a[i]['basedirurl']
+
+            else:
                 self.version = a['version']
                 self.basedirurl = a['basedirurl']
 
@@ -62,10 +72,18 @@ class BuildVersion(object):
             return { 'version': version + '-' + dailyversion, 'basedirurl': basedirurl }
 
         if branch == 'prerelease':
-            version = etree.HTML(urllib.request.urlopen(BuildVersion.PRERELEASE).read()).xpath('//td/a')[1].text.split('_')[1]
+            # Also here, we'll rely on DownloadPage. Whenever a prerelease version is cited in the page.
+            version = etree.HTML(urllib.request.urlopen(BuildVersion.DOWNLOADPAGE).read()).xpath('//p[@class="lead_libre"][last()]/following-sibling::ul[last()]/li/a/text()')
+            retval = []
             basedirurl = { u'x86': '-', u'x86_64': BuildVersion.PRERELEASE }
             
-            return { 'version': version, 'basedirurl': basedirurl }
+            if len(version) == 0:
+                return retval
+
+            for v in version:
+                retval.append({ 'version': v, 'basedirurl': basedirurl })
+
+            return retval
 
         # Stable releases.
         # Old approach - Doesn't really work because RelEng can screw order.