1 files changed, 58 insertions, 1 deletions
diff --git a/parsers.py b/parsers.py
index 64f3259..e276be8 100644
--- a/parsers.py
+++ b/parsers.py
@@ -1,3 +1,60 @@
 '''
 This file should contain all parser definitions for Cmd2.
-'''
-\ No newline at end of file
+'''
+
+class OptionParser(optparse.OptionParser):
+    def exit(self, status=0, msg=None):
+        self.values._exit = True
+        if msg:
+            print (msg)
+
+    def print_help(self, *args, **kwargs):
+        try:
+            print (self._func.__doc__)
+        except AttributeError:
+            pass
+        optparse.OptionParser.print_help(self, *args, **kwargs)
+
+    def error(self, msg):
+        """error(msg : string)
+
+        Print a usage message incorporating 'msg' to stderr and exit.
+        If you override this in a subclass, it should not return -- it
+        should either exit or raise an exception.
+        """
+        raise optparse.OptParseError(msg)
+
+
+def remaining_args(oldArgs, newArgList):
+    '''Preserves the original argument's spacing after
+    removing options.
+
+    >>> remaining_args('-f bar   bar   cow', ['bar', 'cow'])
+    'bar   cow'
+    '''
+    pattern = '\s+'.join(re.escape(a) for a in newArgList) + '\s*$'
+    matchObj = re.search(pattern, oldArgs)
+
+    return oldArgs[matchObj.start():]
+
+
+class ParsedString(str):
+    def full_parsed_statement(self):
+        new = ParsedString('%s %s' % (self.parsed.command, self.parsed.args))
+        new.parsed = self.parsed
+        new.parser = self.parser
+        return new
+    def with_args_replaced(self, newargs):
+        new = ParsedString(newargs)
+        new.parsed = self.parsed
+        new.parser = self.parser
+        new.parsed['args'] = newargs
+        new.parsed.statement['args'] = newargs
+        return new
+
+
+optparse.Values.get = _attr_get_
+
+options_defined = [] # used to distinguish --options from SQL-style --comments
+
+pyparsing.ParserElement.setDefaultWhitespaceChars(' \t')
+\ No newline at end of file