Can't add a synonym of a format

[KolesovDmitry]

General description

Some data formats have synonyms, for example "text/xml" mime type has "application/gml+xml" official synonym.

But if a user add new synonym to format list, the resulting code has side effects. For example

1. Add the next code to the line https://github.com/sourcepole/qgis-wps-client/blob/master/wpslib/processdescription.py#L126:

   {"MIMETYPE":"application/gml+xml", "SCHEMA": "GML", "GDALID": "GML", "DATATYPE": "GML","EXTENSION": "gml"},

   2. Run the plugin, use WPS server with "application/gml+xml" input.
   3. The plugin can handle "text/xml" mime type or "application/gml+xml", but not both: for one or another case the plugin raises "The process '<...>' does not seem to support GML for the parameter '<...>', which is required by the QGIS WPS client." error. (Details depend on order of mime types in VECTOR_MIMETYPES list).

Cause of the issue

The cause is connected with getBaseMimeType and getDataTypeInfo functions (both functions are called in the line):

• Function getBaseMimeType returns FIRST mime-type of general DATATYPE (== GML in this example)
• Function getDataTypeInfo matches mime type of the input and mime type of the stored format. So if "application/gml+xml" is the first synonym of GML format stored in VECTOR_MIMETYPES list, function getBaseMimeType returns 'application/gml+xml'. But if WPS server provides "text/xml" synonym for GML format, then getDataTypeInfo function doesn't match "text/xml" and "application/gml+xml". As result it returns None, but not dataType.

[hdus]

Do you have an idea how to solve the issue?