g.extension: avoid using option svnurl outside main fun

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@65868 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/g.extension/g.extension.py

@@ -398,18 +398,21 @@ def list_available_modules(url, mlist=None):
     """List modules available in the repository
 
     Tries to use XML metadata file first. Fallbacks to HTML page with a list.
+
+    :param url: URL of the directory (file name will be attached)
+    :param mlist: list only modules in this list
     """
-    url = url + "modules.xml"
-    grass.debug("url=%s" % url, 1)
+    file_url = url + "modules.xml"
+    grass.debug("url=%s" % file_url, 1)
     try:
-        tree = etree_fromurl(url, proxies=PROXIES)
+        tree = etree_fromurl(file_url, proxies=PROXIES)
     except ETREE_EXCEPTIONS:
         grass.warning(_("Unable to parse '%s'. Trying to scan"
-                        " SVN repository (may take some time)...") % url)
-        list_available_extensions_svn()
+                        " SVN repository (may take some time)...") % file_url)
+        list_available_extensions_svn(url)
         return
     except (HTTPError, URLError, IOError, OSError):
-        list_available_extensions_svn()
+        list_available_extensions_svn(url)
         return
 
     for mnode in tree.findall('task'):
@@ -430,14 +433,22 @@ def list_available_modules(url, mlist=None):
         else:
             print(name)
 
-# list extensions (scan SVN repo)
-
 
-def list_available_extensions_svn():
+# TODO: this is now broken/dead code, SVN is basically not used
+# fallback for Trac should parse Trac HTML page
+# this might be useful for potential SVN repos or anything
+# which would list the extensions/addons as list
+def list_available_extensions_svn(url):
     """List available extensions from HTML given by URL
 
+    Filename is generated based on the module class/family.
+
     ``<li><a href=...`` is parsed to find module names.
+    This works well for HTML page generated by Subversion.
+
+    :param url: a directory URL (filename will be attached)
     """
+    gscript.debug("list_available_extensions_svn(url=%s)" % url, 2)
     grass.message(_('Fetching list of extensions from'
                     ' GRASS-Addons SVN repository (be patient)...'))
     pattern = re.compile(r'(<li><a href=".+">)(.+)(</a></li>)', re.IGNORECASE)
@@ -455,7 +466,8 @@ def list_available_extensions_svn():
         modclass = expand_module_class_name(prefix)
         grass.verbose(_("Checking for '%s' modules...") % modclass)
 
-        url = '%s/%s' % (options['svnurl'], modclass)
+        # construct a full URL of a file
+        url = '%s/%s' % (url, modclass)
         grass.debug("url = %s" % url, debug=2)
         try:
             file_ = urlopen(url, proxies=PROXIES)
@@ -472,18 +484,23 @@ def list_available_extensions_svn():
             if name.split('.', 1)[0] == prefix:
                 print(name)
 
-    # get_wxgui_extensions()
+    # get_wxgui_extensions(url)
+
 
+# TODO: this is a dead code, not clear why not used, but seems not needed
+def get_wxgui_extensions(url):
+    """Return list of extensions/addons in wxGUI directory at given URL
 
-def get_wxgui_extensions():
-    """Return list of extensions/addons in wxGUI directory at given URL"""
+    :param url: a directory URL (filename will be attached)
+    """
     mlist = list()
     grass.debug('Fetching list of wxGUI extensions from '
                 'GRASS-Addons SVN repository (be patient)...')
     pattern = re.compile(r'(<li><a href=".+">)(.+)(</a></li>)', re.IGNORECASE)
     grass.verbose(_("Checking for '%s' modules...") % 'gui/wxpython')
 
-    url = '%s/%s' % (options['svnurl'], 'gui/wxpython')
+    # construct a full URL of a file
+    url = '%s/%s' % (url, 'gui/wxpython')
     grass.debug("url = %s" % url, debug=2)
     file_ = urlopen(url, proxies=PROXIES)
     if not file_:
@@ -1584,6 +1601,8 @@ def main():
     if sys.platform != "win32":
         check_progs()
 
+    original_url = options['svnurl']
+
     # manage proxies
     global PROXIES
     if options['proxy']:
@@ -1600,9 +1619,9 @@ def main():
         # using dummy module, we don't need any module URL now,
         # but will work only as long as the function does not check
         # if the URL is actually valid or something
-        source, url = resolve_source_code(name='r.dummy',
-                                          url=options['svnurl'])
-        xmlurl = resolve_xmlurl_prefix(options['svnurl'], source=source)
+        source, url = resolve_source_code(name='dummy',
+                                          url=original_url)
+        xmlurl = resolve_xmlurl_prefix(original_url, source=source)
         list_available_extensions(xmlurl)
         return 0
     elif flags['a']:
@@ -1620,8 +1639,8 @@ def main():
     if options['operation'] == 'add':
         check_dirs()
         source, url = resolve_source_code(name=options['extension'],
-                                          url=options['svnurl'])
-        xmlurl = resolve_xmlurl_prefix(options['svnurl'], source=source)
+                                          url=original_url)
+        xmlurl = resolve_xmlurl_prefix(original_url, source=source)
         install_extension(source=source, url=url, xmlurl=xmlurl)
     else:  # remove
         remove_extension(force=flags['f'])