Coverage for src/crawler/by_source/mathnetru_crawler.py: 85%
178 statements
« prev ^ index » next coverage.py v7.8.2, created at 2025-06-03 13:39 +0000
1import time
2from datetime import datetime, timedelta
3from urllib.parse import parse_qs, urljoin, urlparse
4from uu import Error
6import langcodes
7import lingua
8import regex
9import requests
10from bs4 import BeautifulSoup, Tag
11from lingua import LanguageDetectorBuilder
12from ptf.cmds.xml.jats.builder.citation import get_ext_link_xml
13from ptf.cmds.xml.jats.jats_parser import JatsBase
14from ptf.cmds.xml.xml_utils import escape
15from ptf.model_data import (
16 ArticleData,
17 IssueData,
18 create_abstract,
19 create_articledata,
20 create_contributor,
21)
23from crawler.base_crawler import BaseCollectionCrawler
24from crawler.utils import add_pdf_link_to_xarticle, cleanup_str
27class MathnetruCrawler(BaseCollectionCrawler):
28 source_domain = "MATHNETRU"
29 source_name = "Math-Net.Ru"
30 source_website = "https://www.mathnet.ru"
32 issue_regex = regex.compile(
33 r"(?P<year>\d{4})(?:, ?(?:Volume) (?P<volume>\d+))?(?:, ?(?:Number|Issue) (?P<number>\d+)\((?P<volume>\d+)\)?)?"
34 )
35 issue_regex_alt = r"«.+»(?:, Volume (?P<volume>\d+))? \((?P<year>\d+)\)"
37 issue_regex_col = regex.compile(
38 r"[\w \-,\.]+, (?P<year>\d+)(?:, Volume[ ](?P<volume>\d+))?(?:, Issue[ ](?P<number>[\d\-]+))?"
39 )
41 language_detector = LanguageDetectorBuilder.from_languages(
42 lingua.Language.ENGLISH, lingua.Language.RUSSIAN, lingua.Language.FRENCH
43 ).build()
45 def parse_collection_content(self, content):
46 xissues = []
47 # Some mathnetru pages are broken : view-source:https://www.mathnet.ru/php/archive.phtml?jrnid=al&wshow=contents&option_lang=eng
48 soup = BeautifulSoup(content, "html5lib")
50 # Issues without names
51 issue_tags = soup.select(
52 "table.Card td:not(.year) a.SLink[href^='/php/archive.phtml'], "
53 "table.cont td.issue_with_corner:not(.year) a.SLink[href^='/php/archive.phtml'], "
54 "table[bordercolorlight='black'] tr:not([class]) td:not(.year) a.SLink[href^='/php/archive.phtml']"
55 )
56 for index, link_tag in enumerate(issue_tags):
57 href = link_tag.get("href")
59 if not isinstance(href, str): 59 ↛ 60line 59 didn't jump to line 60 because the condition on line 59 was never true
60 raise ValueError(
61 f"[{self.source_domain}] {self.collection_id} : Issue link cannot be parsed"
62 )
63 url = urljoin(self.source_website, href) + "&bshow=contents"
65 title = link_tag.get("title")
66 if not isinstance(title, str): 66 ↛ 67line 66 didn't jump to line 67 because the condition on line 66 was never true
67 raise Error("Couldn't find issue data")
68 issue_search = self.issue_regex_col.search(title)
69 if not issue_search: 69 ↛ 70line 69 didn't jump to line 70 because the condition on line 69 was never true
70 raise Error("Couldn't parse issue data")
71 issue_dict = issue_search.groupdict()
72 year = issue_dict["year"]
73 volume = issue_dict.get("volume", None)
74 number = issue_dict.get("number", None)
76 # Use another method to parse issue metadata if the first one is not successfull
77 parsed_url = urlparse(url)
78 query_args = parse_qs(parsed_url.query)
80 year = year or next(iter(query_args.get("year") or []), None)
81 volume = volume or next(iter(query_args.get("volume") or []), None)
82 number = number or next(iter(query_args.get("issue") or []), None)
83 if not year: 83 ↛ 84line 83 didn't jump to line 84 because the condition on line 83 was never true
84 raise Error("Couldn't parse issue year")
85 xissue = self.create_xissue(
86 url,
87 year,
88 volume,
89 number,
90 )
92 xissues.append(xissue)
94 return xissues
96 def parse_issue_content(self, content, xissue):
97 soup = BeautifulSoup(content, "html.parser")
98 # Parse issue title (if exists)
99 issue_title_tag = soup.select_one("td[valign='top'] div.red font")
100 if issue_title_tag:
101 title_str = cleanup_str(issue_title_tag.text)
102 part_search = regex.search(r"Part (?P<number>\d+)$", title_str)
103 if part_search: 103 ↛ 104line 103 didn't jump to line 104 because the condition on line 103 was never true
104 title_str = title_str.removesuffix(f"Part {xissue.number}")
106 xissue.title_tex = title_str
108 # Parse Articles
109 # Workaround for https://www.mathnet.ru/php/archive.phtml?jrnid=mais&wshow=issue&year=2012&volume=19&issue=1&option_lang=eng
110 articles_tags = soup.select(
111 "td[colspan='2'] a.SLink[href^='/eng'], td[colspan='2'] a.SLink[href^='/rus']"
112 )
113 for i, a in enumerate(articles_tags):
114 article = create_articledata()
115 href = a.get("href")
116 if not isinstance(href, str): 116 ↛ 117line 116 didn't jump to line 117 because the condition on line 116 was never true
117 raise ValueError(
118 f"[{self.source_domain}] {self.collection_id} : Article link cannot be parsed"
119 )
121 article.url = self.source_website + href
122 article.pid = "a" + str(i)
123 xissue.articles.append(article)
125 def parse_article_content(self, content, xissue, xarticle, url):
126 soup = BeautifulSoup(content, "html.parser")
128 # Language
129 language_candidates = soup.select("div.around-button > div.msc")
130 language_span = next(
131 (
132 span
133 for span in language_candidates
134 if cleanup_str(span.text).startswith("Language: ")
135 ),
136 None,
137 )
139 if not language_span: 139 ↛ 140line 139 didn't jump to line 140 because the condition on line 139 was never true
140 raise ValueError(
141 f"[{self.source_domain}] {self.collection_id} : Couldn't find article language"
142 )
144 language_b = language_span.select_one("b")
145 if language_b: 145 ↛ 148line 145 didn't jump to line 148 because the condition on line 145 was always true
146 language_b.decompose()
148 long_lang = cleanup_str(language_span.text)
149 xarticle.lang = str(langcodes.find(long_lang))
151 # Title
152 title_tag = soup.select_one("span.red font")
153 if not title_tag: 153 ↛ 154line 153 didn't jump to line 154 because the condition on line 153 was never true
154 raise ValueError(
155 f"[{self.source_domain}] {self.collection_id} : Article title not found"
156 )
157 xarticle.title_tex = title_tag.text
159 amsbib_tag = soup.select_one("div.showamsbib")
161 if amsbib_tag: 161 ↛ 189line 161 didn't jump to line 189 because the condition on line 161 was always true
162 amsbib = amsbib_tag.text
163 authors_match = regex.search(r"^\\by (.*)$", amsbib, flags=regex.MULTILINE)
164 if authors_match:
165 authors = authors_match.group(1).split(",")
166 for author_text in authors:
167 if author_text != "": 167 ↛ 166line 167 didn't jump to line 166 because the condition on line 167 was always true
168 author_text = self.latext_parser.latex_to_text(author_text)
169 author = create_contributor()
170 author["role"] = "author"
171 author["string_name"] = cleanup_str(author_text)
172 xarticle.contributors.append(author)
174 title_match = regex.search(r"^\\paper (.*)$", amsbib, flags=regex.MULTILINE)
175 if title_match: 175 ↛ 178line 175 didn't jump to line 178 because the condition on line 175 was always true
176 xarticle.title_tex = title_match.group(1)
178 title_match = regex.search(r"^\\pages (.*)$", amsbib, flags=regex.MULTILINE)
179 if title_match: 179 ↛ 189line 179 didn't jump to line 189 because the condition on line 179 was always true
180 page_range = title_match.group(1)
181 pages = page_range.split("--")
182 if len(pages) == 2:
183 xarticle.fpage = pages[0].replace(",", "")
184 xarticle.lpage = pages[1].replace(",", "")
185 else:
186 xarticle.page_range = page_range
188 # Pdf
189 pdf_tag = soup.select_one("a.button_green[title='Full-text article is available']")
190 if not pdf_tag: 190 ↛ 191line 190 didn't jump to line 191 because the condition on line 190 was never true
191 pdf_tag = soup.select_one("a.button_green:-soup-contains-own('English version PDF')")
192 if pdf_tag: 192 ↛ 198line 192 didn't jump to line 198 because the condition on line 192 was always true
193 href = pdf_tag.get("href")
194 if isinstance(href, str): 194 ↛ 198line 194 didn't jump to line 198 because the condition on line 194 was always true
195 add_pdf_link_to_xarticle(xarticle, self.source_website + href)
197 # References
198 a_id = url.split("/")[-1]
199 ref_url = (
200 self.source_website
201 + f"/php/getRefFromDB.phtml?jrnid={''.join(filter(str.isalpha, a_id))}&paperid={''.join(filter(str.isnumeric, a_id))}&output=htm&option_lang=eng"
202 )
204 self.parse_references(self.download_file(ref_url), xarticle)
206 # Keywords
207 keyword_tag = next(
208 iter(
209 [d for d in soup.select("div.around-button") if d.text.startswith("\nKeywords:")]
210 ),
211 None,
212 )
213 if keyword_tag:
214 keywords = keyword_tag.text.removeprefix("\nKeywords:\n").strip().split(", ")
215 for kwd in keywords:
216 xarticle.kwds.append({"type": "", "value": kwd, "lang": self.detect_language(kwd)})
218 abstract_tag = next(
219 iter([d for d in soup.select("div.around-button") if d.text.startswith("\nAbstract")]),
220 None,
221 )
222 if abstract_tag:
223 abstract_tag_b = abstract_tag.select_one("b")
224 if abstract_tag_b: 224 ↛ 226line 224 didn't jump to line 226 because the condition on line 224 was always true
225 abstract_tag_b.decompose()
226 xabstract = create_abstract(
227 tag="abstract",
228 value_tex=abstract_tag.text,
229 lang=self.detect_language(abstract_tag.text),
230 )
231 xarticle.abstracts.append(xabstract)
232 return xarticle
234 def parse_references(self, content: str, xarticle: ArticleData):
235 soup = BeautifulSoup(content, "html.parser")
236 references = soup.select('tr:has(td[valign="top"])')
238 bibitems = [self.parse_ref(item) for item in references]
239 if len(bibitems) > 0:
240 xarticle.abstracts.append(JatsBase.compile_refs(bibitems))
242 def parse_ref(self, tag: Tag):
243 links_xml = ""
244 for a_tag in tag.select("a"):
245 a_href = a_tag.get("href")
246 if not isinstance(a_href, str): 246 ↛ 247line 246 didn't jump to line 247 because the condition on line 246 was never true
247 continue
248 a_href = escape(a_href)
249 if a_tag.select_one("img[alt='crossref']"):
250 links_xml += get_ext_link_xml(
251 a_href, a_href.removeprefix("https://doi.org/"), "doi"
252 )
253 elif a_tag.select_one("img[alt='mathscinet']"):
254 links_xml += get_ext_link_xml(
255 a_href,
256 a_href.removeprefix("http://mathscinet.ams.org/mathscinet-getitem?mr="),
257 "mr-item-id",
258 )
259 elif a_tag.select_one("img[alt='zmath']"):
260 links_xml += get_ext_link_xml(
261 a_href,
262 a_href.removeprefix("https://zbmath.org/?q=an:"),
263 "zbl-item-id",
264 )
265 elif a_tag.select_one("img"):
266 print(f"Unimplemented reference link : {a_tag.get('href', '')}")
267 else:
268 links_xml += get_ext_link_xml(a_href, escape(a_tag.text))
269 a_tag.decompose()
271 return JatsBase.bake_ref(cleanup_str(tag.text + links_xml))
273 def decode_response(self, response: requests.Response, encoding: str = "utf-8"):
274 """Override this if the content-type headers from the sources are advertising something else than the actual content
275 SASA needs this"""
276 if "charset=" in response.headers["Content-Type"]: 276 ↛ 277line 276 didn't jump to line 277 because the condition on line 276 was never true
277 encoding = response.headers["Content-Type"].split("charset=")[1]
278 return response.content.decode(encoding)
280 def crawl_article(self, xarticle: ArticleData, xissue: IssueData):
281 # TODO : set pid in xarticle here instead of passing it to `parse_article_content`
282 parsed_xarticle = xarticle
283 if hasattr(xarticle, "url") and xarticle.url: 283 ↛ 301line 283 didn't jump to line 301 because the condition on line 283 was always true
284 parsed_xarticle = None
285 attempts = 0
286 while parsed_xarticle is None and attempts < 3:
287 try:
288 parsed_xarticle = super().crawl_article(xarticle, xissue)
289 except ValueError as e:
290 print(f"{xarticle.pid} : Caught error : {e} ")
291 attempts += 1
292 print(
293 f"Retrying in {((attempts) * 15)}mins ({(datetime.now() + timedelta(minutes=attempts * 15)).time()})"
294 )
295 # 15 mins, 30 mins, 45 mins
296 time.sleep(attempts * 15 * 60)
297 self.download_file(xarticle.url, force_refresh=True)
299 if parsed_xarticle is None: 299 ↛ 300line 299 didn't jump to line 300 because the condition on line 299 was never true
300 raise ValueError(f"Couldn't parse article {xarticle.pid}")
301 return self.process_resource_metadata(parsed_xarticle)