forked from zaclys/searxng
f1c61921f7
Crossref was broken on result types journal-issue and component .. The old code had lots of assumptions, and broke during parsing. Now the assumptions are more explicit and checked them with the API.
65 lines
2.5 KiB
Python
65 lines
2.5 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
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# lint: pylint
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"""CrossRef"""
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from urllib.parse import urlencode
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from datetime import datetime
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about = {
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"website": "https://www.crossref.org/",
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"wikidata_id": "Q5188229",
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"official_api_documentation": "https://api.crossref.org",
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"use_official_api": False,
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"require_api_key": False,
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"results": "JSON",
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}
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categories = ["science", "scientific publications"]
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paging = True
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search_url = "https://api.crossref.org/works"
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def request(query, params):
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params["url"] = search_url + "?" + urlencode({"query": query, "offset": 20 * (params["pageno"] - 1)})
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return params
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def response(resp):
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results = []
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for record in resp.json()["message"]["items"]:
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if record["type"] == "component":
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# These seem to be files published along with papers. Not something you'd search for
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continue
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result = {
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"template": "paper.html",
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"content": record.get("abstract", ""),
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"doi": record.get("DOI"),
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"pages": record.get("page"),
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"publisher": record.get("publisher"),
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"tags": record.get("subject"),
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"type": record.get("type"),
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"url": record.get("URL"),
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"volume": record.get("volume"),
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}
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if record["type"] == "book-chapter":
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result["title"] = record["container-title"][0]
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if record["title"][0].lower().strip() != result["title"].lower().strip():
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result["title"] += f" ({record['title'][0]})"
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else:
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result["title"] = record["title"][0] if "title" in record else record.get("container-title", [None])[0]
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result["journal"] = record.get("container-title", [None])[0] if "title" in record else None
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if "resource" in record and "primary" in record["resource"] and "URL" in record["resource"]["primary"]:
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result["url"] = record["resource"]["primary"]["URL"]
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if "published" in record and "date-parts" in record["published"]:
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result["publishedDate"] = datetime(*(record["published"]["date-parts"][0] + [1, 1][:3]))
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result["authors"] = [a.get("given", "") + " " + a.get("family", "") for a in record.get("author", [])]
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result["isbn"] = record.get("isbn") or [i["value"] for i in record.get("isbn-type", [])]
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# All the links are not PDFs, even if the URL ends with ".pdf"
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# result["pdf_url"] = record.get("link", [{"URL": None}])[0]["URL"]
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results.append(result)
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return results
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