Guess mimetype and use it in uploads

Refs: #4196

kamaki/cli/commands/pithos.py

@@ -40,7 +40,7 @@ from kamaki.cli.command_tree import CommandTree
 from kamaki.cli.errors import raiseCLIError, CLISyntaxError, CLIBaseUrlError
 from kamaki.cli.utils import (
     format_size, to_bytes, print_dict, print_items, pretty_keys, pretty_dict,
-    page_hold, bold, ask_user, get_path_size, print_json)
+    page_hold, bold, ask_user, get_path_size, print_json, guess_mime_type)
 from kamaki.cli.argument import FlagArgument, ValueArgument, IntArgument
 from kamaki.cli.argument import KeyValueArgument, DateArgument
 from kamaki.cli.argument import ProgressBarArgument
@@ -983,11 +983,12 @@ class file_manifest(_file_container_command, _optional_output_cmd):
     @errors.pithos.container
     @errors.pithos.object_path
     def _run(self):
+        ctype, cenv = guess_mime_type(self.path)
         self._optional_output(self.client.create_object_by_manifestation(
             self.path,
-            content_encoding=self['content_encoding'],
+            content_encoding=self['content_encoding'] or cenc,
             content_disposition=self['content_disposition'],
-            content_type=self['content_type'],
+            content_type=self['content_type'], or ctype,
             sharing=self['sharing'],
             public=self['public']))
 
@@ -1135,6 +1136,10 @@ class file_upload(_file_container_command, _optional_output_cmd):
         container_info_cache = dict()
         for f, rpath in self._path_pairs(local_path, remote_path):
             print('%s --> %s:%s' % (f.name, self.client.container, rpath))
+            if not (self['content_type'] and self['content_encoding']):
+                ctype, cenc = guess_mime_type(f.name)
+                params['content_type'] = self['content_type'] or ctype
+                params['content_encoding'] = self['content_encoding'] or cenc
             if self['unchunked']:
                 r = self.client.upload_object_unchunked(
                     rpath, f,

kamaki/cli/utils.py

@@ -75,6 +75,20 @@ def suggest_missing(miss=None, exclude=[]):
             print('')
 
 
+def guess_mime_type(
+        filename,
+        default_content_type='application/octet-stream',
+        default_encoding=None):
+    assert filename, 'Cannot guess mimetype for empty filename'
+    try:
+        from mimetypes import guess_type
+        ctype, cenc = guess_type(filename)
+        return ctype or default_content_type, cenc or default_encoding
+    except ImportError:
+        print 'WARNING: Cannot import mimetypes, using defaults'
+        return (default_content_type, default_encoding)
+
+
 def remove_colors():
     global bold
     global red

kamaki/clients/pithos/__init__.py

@@ -456,6 +456,7 @@ class PithosClient(PithosRestClient):
             format='json',
             hashmap=True,
             content_type=content_type,
+            content_encoding=content_encoding,
             if_etag_match=if_etag_match,
             if_etag_not_match='*' if if_not_exist else None,
             etag=etag,