CPT: Use regex to get NSIS binaries on Windows

appveyor.yml

@@ -0,0 +1,21 @@
+platform:
+  - x86
+  - x64
+configuration:
+  - Debug
+  - Release
+
+skip_tags: true
+os:
+  - Visual Studio 2015
+
+build:
+  parallel: true
+  verbosity: normal
+
+install:
+  - C:\"Program Files (x86)"\"Microsoft Visual Studio 14.0"\VC\vcvarsall.bat
+  - "SET PATH=C:\\Python35;C:\\Python35\\Scripts;%PATH%"
+
+build_script:
+- tools\packaging\cpt.py --current-dev=tar --with-cling-url=https://github.com/vgvassilev/cling

tools/packaging/cpt.py

@@ -27,11 +27,13 @@
 if sys.version_info < (3, 0):
     # Python 2.x
     from urllib2 import urlopen
+    from HTMLParser import HTMLParser
 
     input = raw_input
 else:
     # Python 3.x
     from urllib.request import urlopen
+    from html.parser import HTMLParser
 
 import argparse
 import os
@@ -1019,14 +1021,25 @@ def check_win(pkg):
             print(pkg.ljust(20) + '[OK]'.ljust(30))
 
 
+class NSISVersionParser(HTMLParser):
+    def __init__(self):
+        HTMLParser.__init__(self)
+        self.out = None
+    def handle_data(self, data):
+        r = re.match(r'^v(?:\d+)(?!(a|b|rc)(?:\d+)?)$', data)
+        if r:
+            self.out = r.group()
+
+
 def get_win_dep():
     box_draw("Download NSIS compiler")
-    html = urlopen('http://sourceforge.net/p/nsis/code/HEAD/tree/NSIS/tags/').read().decode('utf-8')
-    NSIS_VERSION = html[html.rfind('<a href="v'):html.find('>', html.rfind('<a href="v'))].strip('<a href="v').strip(
-        '"')
-    NSIS_VERSION = NSIS_VERSION[:1] + '.' + NSIS_VERSION[1:]
+    html = urlopen('https://sourceforge.net/p/nsis/code/HEAD/tree/NSIS/tags/').read().decode('utf-8')
+    nsis_parser = NSISVersionParser()
+    nsis_parser.feed(html)
+    NSIS_VERSION = nsis_parser.out
+    NSIS_VERSION = NSIS_VERSION[1:2] + '.' + NSIS_VERSION[2:3]
     print('Latest version of NSIS is: ' + NSIS_VERSION)
-    wget(url="http://sourceforge.net/projects/nsis/files/NSIS%%203%%20Pre-release/%s/nsis-%s.zip" % (
+    wget(url="https://sourceforge.net/projects/nsis/files/NSIS%%203/%s/nsis-%s.zip" % (
         NSIS_VERSION, NSIS_VERSION),
          out_dir=TMP_PREFIX)
     print('Extracting: ' + os.path.join(TMP_PREFIX, 'nsis-%s.zip' % (NSIS_VERSION)))