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Levin Zimmermann
erp5
Commits
62a887a6
Commit
62a887a6
authored
Jan 18, 2017
by
Tristan Cavelier
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Transforms: add getAvailableTargetMimetypeList method
parent
9052dff8
Changes
2
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2 changed files
with
58 additions
and
0 deletions
+58
-0
product/PortalTransforms/TransformEngine.py
product/PortalTransforms/TransformEngine.py
+40
-0
product/PortalTransforms/utils.py
product/PortalTransforms/utils.py
+18
-0
No files found.
product/PortalTransforms/TransformEngine.py
View file @
62a887a6
...
...
@@ -30,6 +30,7 @@ from Products.PortalTransforms.transforms import initialize
from
Products.PortalTransforms.utils
import
log
from
Products.PortalTransforms.utils
import
TransformException
from
Products.PortalTransforms.utils
import
_www
from
Products.PortalTransforms.utils
import
parseContentType
from
ZODB.POSException
import
ConflictError
...
...
@@ -651,5 +652,44 @@ class TransformTool(UniqueObject, ActionProviderBase, Folder):
available_types
.
append
(
input
)
return
available_types
security
.
declarePublic
(
'getAvailableTargetMimetypeList'
)
def
getAvailableTargetMimetypeList
(
self
,
source_mimetype
):
"""
Returns a list of mimetypes that can be used as target for
`source_mimetype` conversion.
"""
# clean up mimetype from its useless characters
source_mimetype
=
parseContentType
(
source_mimetype
)
source_mimetype
=
";"
.
join
([
source_mimetype
.
gettype
()]
+
source_mimetype
.
getplist
())
# fill dict that will contain all possible conversion for each mimetype
input_output_dict
=
{}
# {"application/pdf": set(["text/html", "application/msword", ...])}
for
obj
in
self
.
objectValues
():
for
input_
in
obj
.
inputs
:
if
input_
in
input_output_dict
:
input_output_dict
[
input_
].
add
(
obj
.
output
)
else
:
input_output_dict
[
input_
]
=
set
([
obj
.
output
])
# browse mimetypes to fill result_set of available target mimetypes
result_set
=
set
([
source_mimetype
])
browsing_list
=
[
source_mimetype
]
input_output_items
=
input_output_dict
.
items
()
while
len
(
browsing_list
):
browsing_mimetype
=
browsing_list
.
pop
()
for
mimetype
,
output_mimetype_set
in
input_output_items
:
if
(
browsing_mimetype
==
mimetype
or
(
mimetype
.
endswith
(
"/*"
)
and
browsing_mimetype
[:
len
(
mimetype
[:
-
1
])]
==
mimetype
[:
-
1
])
):
for
output_mimetype
in
output_mimetype_set
:
if
output_mimetype
not
in
result_set
:
result_set
.
add
(
output_mimetype
)
browsing_list
.
append
(
output_mimetype
)
result_set
.
remove
(
source_mimetype
)
return
list
(
result_set
)
InitializeClass
(
TransformTool
)
registerToolInterface
(
'portal_transforms'
,
IPortalTransformsTool
)
product/PortalTransforms/utils.py
View file @
62a887a6
...
...
@@ -2,6 +2,9 @@
"""some common utilities
"""
import
mimetools
import
cStringIO
class
TransformException
(
Exception
):
pass
...
...
@@ -25,3 +28,18 @@ def safeToInt(value):
return
int
(
value
)
except
(
TypeError
,
ValueError
):
return
0
def
parseContentType
(
content_type
):
"""Parses `text/plain;charset="utf-8"` to a mimetools.Message object.
Note: Content type or MIME type are built like `maintype/subtype[;params]`.
parsed_content_type = parseContentType('text/plain;charset="utf-8"')
parsed_content_type.gettype() -> 'text/plain'
parsed_content_type.getmaintype() -> 'text'
parsed_content_type.getsubtype() -> 'plain'
parsed_content_type.getplist() -> 'charset="utf-8"'
parsed_content_type.getparam('charset') -> 'utf-8'
parsed_content_type.typeheader -> 'text/plain;charset="utf-8"'
"""
return
mimetools
.
Message
(
cStringIO
.
StringIO
(
"Content-Type:"
+
content_type
.
replace
(
"
\
r
\
n
"
,
"
\
r
\
n
\
t
"
)))
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