import json from citeproc import ( Citation, CitationItem, CitationStylesBibliography, CitationStylesStyle, formatter, ) from citeproc.source.json import CiteProcJSON from citeproc_styles import get_style_filepath def contribs_by_role(contribs, role): ret = [c.copy() for c in contribs if c["role"] == role] [c.pop("role") for c in ret] # TODO: some note to self here [c.pop("literal") for c in ret if "literal" in c] if not ret: return None else: return ret def release_to_csl(entity): """ Returns a python dict which can be json.dumps() to get a CSL-JSON (aka, citeproc-JSON, aka Citation Style Language JSON) This function will likely become an API method/endpoint Follows, but not enforced by: https://github.com/citation-style-language/schema/blob/master/csl-data.json """ contribs = [] for contrib in entity.contribs or []: if contrib.creator: # Default to "local" (publication-specific) metadata; fall back to # creator-level family = ( contrib.creator.surname or contrib.surname or (contrib.raw_name and contrib.raw_name.split()[-1]) ) if not family: # CSL requires some surname (family name) continue c = dict( family=family, given=contrib.creator.given_name or contrib.given_name, # dropping-particle # non-dropping-particle # suffix # comma-suffix # static-ordering literal=contrib.creator.display_name or contrib.raw_name, # parse-names, # role must be defined; default to author role=contrib.role or "author", ) else: family = contrib.surname or (contrib.raw_name and contrib.raw_name.split()[-1]) if not family: # CSL requires some surname (family name) continue c = dict( family=family, given=contrib.given_name, literal=contrib.raw_name, # role must be defined; default to author role=contrib.role or "author", ) for k in list(c.keys()): if not c[k]: c.pop(k) contribs.append(c) if not contribs: raise ValueError("citeproc requires at least one author with a surname") abstract = None if entity.abstracts: abstract = entity.abstracts[0].content issued_date = None if entity.release_date: issued_date = { "date-parts": [ [ entity.release_date.year, entity.release_date.month, entity.release_date.day, ] ] } elif entity.release_year: issued_date = {"date-parts": [[entity.release_year]]} csl = dict( # id, # categories type=entity.release_type or "article", # can't be blank language=entity.language, # journalAbbreviation # shortTitle ## see below for all contrib roles # accessed # container # event-date issued=issued_date, # original-date # submitted abstract=abstract, # annote # archive # archive_location # archive-place # authority # call-number # chapter-number # citation-number # citation-label # collection-number # collection-title container_title=entity.container and entity.container.name, # container-title-short # dimensions DOI=entity.ext_ids.doi, # edition # event # event-place # first-reference-note-number # genre ISBN=entity.ext_ids.isbn13, ISSN=entity.container and entity.container.issnl, issue=entity.issue, # jurisdiction # keyword # locator # medium # note # number # number-of-pages # number-of-volumes # original-publisher # original-publisher-place # original-title # TODO: page=entity.pages, page_first=entity.pages and entity.pages.split("-")[0], PMCID=entity.ext_ids.pmcid, PMID=entity.ext_ids.pmid, publisher=(entity.container and entity.container.publisher) or entity.publisher, # publisher-place # references # reviewed-title # scale # section # source # status title=entity.title, # title-short # URL # version volume=entity.volume, # year-suffix ) for role in [ "author", "collection-editor", "composer", "container-author", "director", "editor", "editorial-director", "interviewer", "illustrator", "original-author", "recipient", "reviewed-author", "translator", ]: cbr = contribs_by_role(contribs, role) if cbr: csl[role] = cbr # underline-to-dash csl["container-title"] = csl.pop("container_title") csl["page-first"] = csl.pop("page_first") empty_keys = [k for k, v in csl.items() if not v] for k in empty_keys: csl.pop(k) return csl def refs_to_csl(entity): ret = [] for ref in entity.refs: if ref.release_id and False: # TODO: fetch full entity from API and convert with release_to_csl raise NotImplementedError else: issued_date = None if ref.year: issued_date = [[ref.year]] csl = dict( title=ref.title, issued=issued_date, ) csl["id"] = (ref.key or ref.index,) # zero- or one-indexed? ret.append(csl) return ret def citeproc_csl(csl_json, style, html=False): """ Renders a release entity to a styled citation. Notable styles include: - 'csl-json': special case to JSON encode the structured CSL object (via release_to_csl()) - bibtext: multi-line bibtext format (used with LaTeX) Returns a string; if the html flag is set, and the style isn't 'csl-json' or 'bibtex', it will be HTML. Otherwise plain text. """ if not csl_json.get("id"): csl_json["id"] = "unknown" if style == "csl-json": return json.dumps(csl_json) bib_src = CiteProcJSON([csl_json]) form = formatter.plain if html: form = formatter.html style_path = get_style_filepath(style) bib_style = CitationStylesStyle(style_path, validate=False) bib = CitationStylesBibliography(bib_style, bib_src, form) bib.register(Citation([CitationItem(csl_json["id"])])) lines = bib.bibliography()[0] if style == "bibtex": out = "" for line in lines: if line.startswith(" @"): out += "@" elif line.startswith(" "): out += "\n " + line else: out += line return "".join(out) else: return "".join(lines)