1 files changed, 50 insertions, 0 deletions
diff --git a/pygments/util.py b/pygments/util.py
new file mode 100644
index 00000000..65261964
--- /dev/null
+++ b/pygments/util.py
@@ -0,0 +1,50 @@
+# -*- coding: utf-8 -*-
+"""
+    pygments.util
+    ~~~~~~~~~~~~
+
+    Utility functions.
+
+    :copyright: 2006 by Georg Brandl.
+    :license: GNU LGPL, see LICENSE for more details.
+"""
+
+
+class OptionError(Exception):
+    pass
+
+
+def get_bool_opt(options, optname, default=None):
+    string = options.get(optname, default)
+    if isinstance(string, bool):
+        return string
+    elif string.lower() in ('1', 'yes', 'true', 'on'):
+        return True
+    elif string.lower() in ('0', 'no', 'false', 'off'):
+        return False
+    else:
+        raise OptionError('Invalid value %r for option %s; use '
+                          '1/0, yes/no, true/false, on/off' %
+                          string, optname)
+
+
+def get_int_opt(options, optname, default=None):
+    string = options.get(optname, default)
+    try:
+        return int(string)
+    except ValueError:
+        raise OptionError('Invalid value %r for option %s; you '
+                          'must give an integer value' %
+                          string, optname)
+
+
+def get_list_opt(options, optname, default=None):
+    val = options.get(optname, default)
+    if isinstance(val, basestring):
+        return val.split()
+    elif isinstance(val, (list, tuple)):
+        return list(val)
+    else:
+        raise OptionError('Invalid value %r for option %s; you '
+                          'must give a list value' %
+                          val, optname)