refactoring in anticipation of sharing

1 files changed, 56 insertions, 0 deletions

diff --git a/utils.py b/utils.py
new file mode 100644
index 0000000..39298e3
--- /dev/null
+++ b/utils.py
@@ -0,0 +1,56 @@
+#Copyright (c) 2011 Walter Bender
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+# Boston, MA 02111-1307, USA.
+
+from StringIO import StringIO
+try:
+    OLD_SUGAR_SYSTEM = False
+    import json
+    json.dumps
+    from json import load as jload
+    from json import dump as jdump
+except (ImportError, AttributeError):
+    try:
+        import simplejson as json
+        from simplejson import load as jload
+        from simplejson import dump as jdump
+    except:
+        OLD_SUGAR_SYSTEM = True
+
+
+def json_load(text):
+    """ Load JSON data using what ever resources are available. """
+    if OLD_SUGAR_SYSTEM is True:
+        listdata = json.read(text)
+    else:
+        # strip out leading and trailing whitespace, nulls, and newlines
+        clean_text = text.lstrip()
+        clean_text = clean_text.replace('\12', '')
+        clean_text = clean_text.replace('\00', '')
+        io = StringIO(clean_text.rstrip())
+        try:
+            listdata = jload(io)
+        except ValueError:
+            # assume that text is ascii list
+            listdata = text.split()
+            for i, value in enumerate(listdata):
+                listdata[i] = int(value)
+    return listdata
+
+def json_dump(data):
+    """ Save data using available JSON tools. """
+    if OLD_SUGAR_SYSTEM is True:
+        return json.write(data)
+    else:
+        _io = StringIO()
+        jdump(data, _io)
+        return _io.getvalue()
+