add the part-handler plugin

If a part of a multipart file is 'text/part-handler' then it is 
expected to be python code that implements 2 methods

- list_types()
  list the types that this part-handler supports, return
  a list.  ie: return(['text/plain'])

- handle_parts(data,ctype,filename,payload)
  this method will be called:
     once, when loaded, with ctype == '__begin__'
     once per part
     once, at the end, with ctype == '__end__'

   - ctype is the content type ('text/plain')
   - filename is the filename portion of the mime data
   - payload is the content of the part
   - data is currently the cloud object, but this could change

1 files changed, 12 insertions, 0 deletions

diff --git a/doc/examples/part-handler.txt b/doc/examples/part-handler.txt
new file mode 100644
index 00000000..1fe37f3a
--- /dev/null
+++ b/doc/examples/part-handler.txt
@@ -0,0 +1,12 @@
+#part-handler
+# vi: syntax=python ts=4
+
+def list_types():
+    return(["text/plain", "text/go-cubs-go"])
+
+def handle_part(data,ctype,filename,payload):
+    if ctype == "__end__" or ctype == "__begin__": return
+
+    print "==== received ctype=%s filename=%s ====" % (ctype,filename)
+    print payload
+    print "==== end ctype=%s filename=%s" % (ctype, filename)