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viaf.py
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Created
Fri, Sep 6, 06:59
Size
1 KB
Mime Type
text/x-python
Expires
Sun, Sep 8, 06:59 (2 d)
Engine
blob
Format
Raw Data
Handle
20546177
Attached To
R3600 invenio-infoscience
viaf.py
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from
urllib2
import
urlopen
from
lxml
import
etree
from
invenio.modules.formatter.engine
import
BibFormatObject
CFG_VIAF_WIKIPEDIA_LINK_BFO_FIELD
=
"856"
CFG_VIAF_LINK_NAME_LABEL_SUBFIELD
=
'n'
CFG_VIAF_WIKIPEDIA_NAME_VALUE_SUBFIELD
=
'wikipedia'
CFG_VIAF_WIKIPEDIA_LINK_SUBFIELD
=
'a'
def
get_wikipedia_link
(
viaf_id
):
## Query viaf api and parse results
url
=
"http://viaf.org/viaf/"
+
str
(
viaf_id
)
+
"/viaf.xml"
string_xml
=
urlopen
(
url
)
.
read
()
xml
=
etree
.
fromstring
(
str
(
string_xml
))
## Do an xpath query for all the wikipedia links
## that can be found for the author and return the first one
author_wikipedia_id
=
xml
.
xpath
(
"/ns2:VIAFCluster/ns2:sources/ns2:source[contains(text(),'WKP')]/@nsid"
,
namespaces
=
{
"ns2"
:
"http://viaf.org/viaf/terms#"
})
url_to_wikipedia
=
None
if
type
(
author_wikipedia_id
)
is
list
and
author_wikipedia_id
:
author_wikipedia_id
=
author_wikipedia_id
[
0
]
url_to_wikipedia
=
"http://www.wikipedia.com/wiki/"
+
author_wikipedia_id
return
url_to_wikipedia
def
get_wiki_link_from_record
(
bfo
):
link
=
None
fields
=
[]
if
type
(
bfo
)
is
BibFormatObject
:
fields
=
bfo
.
fields
(
CFG_VIAF_WIKIPEDIA_LINK_BFO_FIELD
)
else
:
fields
=
bfo
.
get
(
CFG_VIAF_WIKIPEDIA_LINK_BFO_FIELD
,[])
for
field
in
fields
:
if
type
(
field
)
is
dict
:
if
field
.
get
(
CFG_VIAF_LINK_NAME_LABEL_SUBFIELD
,
None
)
==
CFG_VIAF_WIKIPEDIA_NAME_VALUE_SUBFIELD
:
link
=
field
.
get
(
CFG_VIAF_WIKIPEDIA_LINK_SUBFIELD
,
None
)
else
:
record_dict
=
{}
for
subfields
in
field
:
if
type
(
subfields
)
is
list
:
for
subfield
in
subfields
:
record_dict
[
subfield
[
0
]]
=
subfield
[
1
]
if
record_dict
.
get
(
CFG_VIAF_LINK_NAME_LABEL_SUBFIELD
,
None
)
==
CFG_VIAF_WIKIPEDIA_NAME_VALUE_SUBFIELD
:
link
=
record_dict
.
get
(
CFG_VIAF_WIKIPEDIA_LINK_SUBFIELD
,
None
)
return
link
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