Imported from SVN by Bitbucket

PasteScript-1.7.4.2-py2.6.egg/paste/script/bool_optparse.py

@@ -0,0 +1,60 @@
+# (c) 2005 Ian Bicking and contributors; written for Paste (http://pythonpaste.org)
+# Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
+"""
+A subclass of ``optparse.OptionParser`` that allows boolean long
+options (like ``--verbose``) to also take arguments (like
+``--verbose=true``).  Arguments *must* use ``=``.
+"""
+
+import optparse
+try:
+    _ = optparse._
+except AttributeError:
+    from gettext import gettext as _
+
+class BoolOptionParser(optparse.OptionParser):
+
+    def _process_long_opt(self, rargs, values):
+        arg = rargs.pop(0)
+
+        # Value explicitly attached to arg?  Pretend it's the next
+        # argument.
+        if "=" in arg:
+            (opt, next_arg) = arg.split("=", 1)
+            rargs.insert(0, next_arg)
+            had_explicit_value = True
+        else:
+            opt = arg
+            had_explicit_value = False
+
+        opt = self._match_long_opt(opt)
+        option = self._long_opt[opt]
+        if option.takes_value():
+            nargs = option.nargs
+            if len(rargs) < nargs:
+                if nargs == 1:
+                    self.error(_("%s option requires an argument") % opt)
+                else:
+                    self.error(_("%s option requires %d arguments")
+                               % (opt, nargs))
+            elif nargs == 1:
+                value = rargs.pop(0)
+            else:
+                value = tuple(rargs[0:nargs])
+                del rargs[0:nargs]
+
+        elif had_explicit_value:
+            value = rargs[0].lower().strip()
+            del rargs[0:1]
+            if value in ('true', 'yes', 'on', '1', 'y', 't'):
+                value = None
+            elif value in ('false', 'no', 'off', '0', 'n', 'f'):
+                # Don't process
+                return
+            else:
+                self.error(_('%s option takes a boolean value only (true/false)') % opt)
+
+        else:
+            value = None
+
+        option.process(opt, value, values, self)