Some charts.py fixes (sugarpycha)

1 files changed, 40 insertions, 0 deletions

diff --git a/sugarpycha/utils.py b/sugarpycha/utils.py
new file mode 100644
index 0000000..9e1b692
--- /dev/null
+++ b/sugarpycha/utils.py
@@ -0,0 +1,40 @@
+# Copyright(c) 2007-2010 by Lorenzo Gil Sanchez <lorenzo.gil.sanchez@gmail.com>
+#              2009-2010 by Yaco S.L. <lgs@yaco.es>
+#
+# This file is part of PyCha.
+#
+# PyCha is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# PyCha is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with PyCha.  If not, see <http://www.gnu.org/licenses/>.
+
+
+def clamp(minValue, maxValue, value):
+    """Make sure value is between minValue and maxValue"""
+    if value < minValue:
+        return minValue
+    if value > maxValue:
+        return maxValue
+    return value
+
+
+def safe_unicode(obj, encoding=None):
+    """Return a unicode value from the argument"""
+    if isinstance(obj, unicode):
+        return obj
+    elif isinstance(obj, str):
+        if encoding is None:
+            return unicode(obj)
+        else:
+            return unicode(obj, encoding)
+    else:
+        # it may be an int or a float
+        return unicode(obj)