-
Notifications
You must be signed in to change notification settings - Fork 114
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #101 from joaquingx/add-support-dublin-core-metadata
[MRG+1] Add dublincore metadata
- Loading branch information
Showing
10 changed files
with
417 additions
and
8 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,156 @@ | ||
| import re | ||
|
|
||
| from extruct.utils import parse_html | ||
| from w3lib.html import strip_html5_whitespace | ||
|
|
||
| _DC_ELEMENTS = { # Defined according DCMES(DCM Version 1.1): http://dublincore.org/documents/dces/ | ||
| 'contributor': 'http://purl.org/dc/elements/1.1/contributor', | ||
| 'coverage': 'http://purl.org/dc/elements/1.1/coverage', | ||
| 'creator': 'http://purl.org/dc/elements/1.1/creator', | ||
| 'date': 'http://purl.org/dc/elements/1.1/date', | ||
| 'description': 'http://purl.org/dc/elements/1.1/description', | ||
| 'format': 'http://purl.org/dc/elements/1.1/format', | ||
| 'identifier': 'http://purl.org/dc/elements/1.1/identifier', | ||
| 'language': 'http://purl.org/dc/elements/1.1/language', | ||
| 'publisher': 'http://purl.org/dc/elements/1.1/publiser', | ||
| 'relation': 'http://purl.org/dc/elements/1.1/relation', | ||
| 'rights': 'http://purl.org/dc/elements/1.1/rights', | ||
| 'source': 'http://purl.org/dc/elements/1.1/source', | ||
| 'subject': 'http://purl.org/dc/elements/1.1/subject', | ||
| 'title': 'http://purl.org/dc/elements/1.1/title', | ||
| 'type': 'http://purl.org/dc/elements/1.1/type', | ||
| } | ||
|
|
||
| _DC_TERMS = { # Defined according: http://dublincore.org/documents/2008/01/14/dcmi-terms/ | ||
| 'abstract': 'http://purl.org/dc/terms/abstract', | ||
| 'description': 'http://purl.org/dc/terms/description', | ||
| 'accessrights': 'http://purl.org/dc/terms/accessRights', | ||
| 'rights': 'http://purl.org/dc/terms/rights', | ||
| 'rightsstatement': 'http://purl.org/dc/terms/RightsStatement', | ||
| 'accrualmethod': 'http://purl.org/dc/terms/accrualMethod', | ||
| 'collection': 'http://purl.org/dc/terms/Collection', | ||
| 'methodOfaccrual': 'http://purl.org/dc/terms/MethodOfAccrual', | ||
| 'accrualperiodicity': 'http://purl.org/dc/terms/accrualPeriodicity', | ||
| 'frequency': 'http://purl.org/dc/terms/Frequency', | ||
| 'accrualpolicy': 'http://purl.org/dc/terms/accrualPolicy', | ||
| 'policy': 'http://purl.org/dc/terms/Policy', | ||
| 'alternative': 'http://purl.org/dc/terms/alternative', | ||
| 'title': 'http://purl.org/dc/terms/title', | ||
| 'audience': 'http://purl.org/dc/terms/audience', | ||
| 'agentclass': 'http://purl.org/dc/terms/AgentClass', | ||
| 'available': 'http://purl.org/dc/terms/available', | ||
| 'date': 'http://purl.org/dc/terms/date', | ||
| 'bibliographiccitation': 'http://purl.org/dc/terms/bibliographicCitation', | ||
| 'identifier': 'http://purl.org/dc/terms/identifier', | ||
| 'bibliographicresource': 'http://purl.org/dc/terms/BibliographicResource', | ||
| 'conformsto': 'http://purl.org/dc/terms/conformsTo', | ||
| 'relation': 'http://purl.org/dc/terms/relation', | ||
| 'standard': 'http://purl.org/dc/terms/Standard', | ||
| 'contributor': 'http://purl.org/dc/terms/contributor', | ||
| 'agent': 'http://purl.org/dc/terms/Agent', | ||
| 'coverage': 'http://purl.org/dc/terms/coverage', | ||
| 'locationperiodorjurisdiction': 'http://purl.org/dc/terms/LocationPeriodOrJurisdiction', | ||
| 'created': 'http://purl.org/dc/terms/created', | ||
| 'creator': 'http://purl.org/dc/terms/creator', | ||
| 'dateaccepted': 'http://purl.org/dc/terms/dateAccepted', | ||
| 'datecopyrighted': 'http://purl.org/dc/terms/dateCopyrighted', | ||
| 'datesubmitted': 'http://purl.org/dc/terms/dateSubmitted', | ||
| 'educationlevel': 'http://purl.org/dc/terms/educationLevel', | ||
| 'extent': 'http://purl.org/dc/terms/extent', | ||
| 'format': 'http://purl.org/dc/terms/format', | ||
| 'sizeorduration': 'http://purl.org/dc/terms/SizeOrDuration', | ||
| 'mediatypeorextent': 'http://purl.org/dc/terms/MediaTypeOrExtent', | ||
| 'hasformat': 'http://purl.org/dc/terms/hasFormat', | ||
| 'haspart': 'http://purl.org/dc/terms/hasPart', | ||
| 'hasversion': 'http://purl.org/dc/terms/hasVersion', | ||
| 'instructionalmethod': 'http://purl.org/dc/terms/instructionalMethod', | ||
| 'methodofinstruction': 'http://purl.org/dc/terms/MethodOfInstruction', | ||
| 'isformatof': 'http://purl.org/dc/terms/isFormatOf', | ||
| 'ispartof': 'http://purl.org/dc/terms/isPartOf', | ||
| 'isreferencedby': 'http://purl.org/dc/terms/isReferencedBy', | ||
| 'isreplacedby': 'http://purl.org/dc/terms/isReplacedBy', | ||
| 'isrequiredby': 'http://purl.org/dc/terms/isRequiredBy', | ||
| 'issued': 'http://purl.org/dc/terms/issued', | ||
| 'isversionof': 'http://purl.org/dc/terms/isVersionOf', | ||
| 'language': 'http://purl.org/dc/terms/language', | ||
| 'linguisticsystem': 'http://purl.org/dc/terms/LinguisticSystem', | ||
| 'license': 'http://purl.org/dc/terms/license', | ||
| 'licensedocument': 'http://purl.org/dc/terms/LicenseDocument', | ||
| 'mediator': 'http://purl.org/dc/terms/mediator', | ||
| 'medium': 'http://purl.org/dc/terms/medium', | ||
| 'physicalresource': 'http://purl.org/dc/terms/PhysicalResource', | ||
| 'physicalmedium': 'http://purl.org/dc/terms/PhysicalMedium', | ||
| 'modified': 'http://purl.org/dc/terms/modified', | ||
| 'provenance': 'http://purl.org/dc/terms/provenance', | ||
| 'provenancestatement': 'http://purl.org/dc/terms/ProvenanceStatement', | ||
| 'publisher': 'http://purl.org/dc/terms/publisher', | ||
| 'references': 'http://purl.org/dc/terms/references', | ||
| 'replaces': 'http://purl.org/dc/terms/replaces', | ||
| 'requires': 'http://purl.org/dc/terms/requires', | ||
| 'rightsholder': 'http://purl.org/dc/terms/rightsHolder', | ||
| 'source': 'http://purl.org/dc/terms/source', | ||
| 'spatial': 'http://purl.org/dc/terms/spatial', | ||
| 'location': 'http://purl.org/dc/terms/Location', | ||
| 'subject': 'http://purl.org/dc/terms/subject', | ||
| 'tableofcontents': 'http://purl.org/dc/terms/tableOfContents', | ||
| 'temporal': 'http://purl.org/dc/terms/temporal', | ||
| 'periodoftime': 'http://purl.org/dc/terms/PeriodOfTime', | ||
| 'type': 'http://purl.org/dc/terms/type', | ||
| 'valid': 'http://purl.org/dc/terms/valid', | ||
| } | ||
|
|
||
| _URL_NAMESPACES = ['http://purl.org/dc/terms/', 'http://purl.org/dc/elements/1.1/'] | ||
|
|
||
|
|
||
| def get_lower_attrib(name): | ||
| # get attribute to compare against _DC_TERMS or _DC_ELEMENTS | ||
| return re.sub(r".*\.", "", name).lower() | ||
|
|
||
|
|
||
| class DublinCoreExtractor(object): | ||
| """DublinCore extractor following extruct API.""" | ||
|
|
||
| def extract(self, htmlstring, base_url=None, encoding='UTF-8'): | ||
| tree = parse_html(htmlstring, encoding=encoding) | ||
| return list(self.extract_items(tree, base_url=base_url)) | ||
|
|
||
| def extract_items(self, document, base_url=None): | ||
| elements = [] | ||
| terms = [] | ||
|
|
||
| def attrib_to_dict(attribs): | ||
| # convert _attrib type to dict | ||
| return dict(attribs.items()) | ||
|
|
||
| def populate_results(node, main_attrib): | ||
| # fill list with DC Elements or DC Terms | ||
| node_attrib = node.attrib | ||
| if main_attrib not in node_attrib: | ||
| return | ||
|
|
||
| name = node.attrib[main_attrib] | ||
| lower_name = get_lower_attrib(name) | ||
| if lower_name in _DC_ELEMENTS: | ||
| node.attrib.update({'URI': _DC_ELEMENTS[lower_name]}) | ||
| elements.append(attrib_to_dict(node.attrib)) | ||
|
|
||
| elif lower_name in _DC_TERMS: | ||
| node.attrib.update({'URI': _DC_TERMS[lower_name]}) | ||
| terms.append(attrib_to_dict(node.attrib)) | ||
|
|
||
| namespaces_nodes = document.xpath('//link[contains(@rel,"schema")]') | ||
| namespaces = {} | ||
| for i in namespaces_nodes: | ||
| url = strip_html5_whitespace(i.attrib['href']) | ||
| if url in _URL_NAMESPACES: | ||
| namespaces.update({re.sub(r"schema\.", "", i.attrib['rel']): url}) | ||
|
|
||
| list_meta_node = document.xpath('//meta') | ||
| for meta_node in list_meta_node: | ||
| populate_results(meta_node, 'name') | ||
|
|
||
| list_link_node = document.xpath('//link') | ||
| for link_node in list_link_node: | ||
| populate_results(link_node, 'rel') | ||
|
|
||
| yield {'namespaces': namespaces, 'elements': elements, 'terms': terms} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.