Split mimedecode.py into a mimedecode library and a small script

[mimedecode.git] / mimedecode / formatparam_27.py

diff --git a/mimedecode/formatparam_27.py b/mimedecode/formatparam_27.py
new file mode 100644 (file)
index 0000000..9abbebe
--- /dev/null
+++ b/mimedecode/formatparam_27.py
@@ -0,0 +1,26 @@
+from email import message
+from email import utils
+
+
+def _formatparam(param, value=None, quote=True):
+    """This is _formatparam from Python 2.7"""
+    if value is not None and len(value) > 0:
+        # A tuple is used for RFC 2231 encoded parameter values where items
+        # are (charset, language, value).  charset is a string, not a Charset
+        # instance.
+        if isinstance(value, tuple):
+            # Encode as per RFC 2231
+            param += '*'
+            value = utils.encode_rfc2231(value[2], value[0], value[1])
+        # BAW: Please check this.  I think that if quote is set it should
+        # force quoting even if not necessary.
+        if quote or message.tspecials.search(value):
+            return '%s="%s"' % (param, utils.quote(value))
+        else:
+            return '%s=%s' % (param, value)
+    else:
+        return param
+
+
+# Replace with this _formatparam to avoid re-encoding non-ascii params
+message._formatparam = _formatparam