source: ValBot/Python/check_intrawiki_section_links.py@ 1179

Last change on this file since 1179 was 1179, checked in by iritscen, 19 months ago

ValBot: check_intrawiki_section_links.py: Simplified output to just advice and errors. Added support for SectionLink template. Added support for links built on chapter name transclusion. Placed verbose output under a "-dbg" argument.
File size: 14.7 KB
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1# Check Intrawiki Section Links
2# by iritscen@yahoo.com
3# Looks at each wikilink on a page (or in all the pages in a category) for a section link ('#'),
4# and loads the linked page and verifies that the named section actually exists. It also
5# understands section links generated through a call to Template:SectionLink.
6# Recommended viewing width:
7# |---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- --|
8
9import os
10
11from urllib.parse import urljoin
12
13import pywikibot
14import re
15
16from pywikibot.bot import QuitKeyboardInterrupt
17from pywikibot import pagegenerators
18from pywikibot.tools.formatter import color_format
19from pywikibot.comms.http import fetch
20from pywikibot.specialbots import UploadRobot
21from bs4 import BeautifulSoup
22
23# Tuple of OniGalore's namespaces
24intrawiki_prefixes = ('Image', 'Special', 'Talk', 'User', 'User_talk', 'OniGalore', 'OniGalore_talk', 'File', 'File_talk', 'MediaWiki', 'MediaWiki_talk', 'Template', 'Template_talk', 'Help', 'Help_talk', 'Category', 'Category_talk', 'BSL', 'BSL_talk', 'OBD', 'OBD_talk', 'AE', 'AE_talk', 'Oni2', 'Oni2_talk', 'XML', 'XML_talk')
25
26# URL for main namespace of our wiki
27onigalore_url = 'https://wiki.oni2.net/'
28
29# Tuple of interwiki prefixes, for passing over such links
30interwiki_prefixes = ('acronym', 'cache', 'commons', 'dictionary', 'google', 'metawikimedia', 'mw', 'wikibooks', 'wikidata', 'wikimedia', 'wikinews', 'wikipedia', 'wikiquote', 'wikisource', 'wikispecies', 'wikiversity', 'wikivoyage', 'wikt', 'wiktionary', 'wp')
31
32# List of chapter names, for substitution into links that use "{{Cn}}" transclusion
33chapter_names = ['CHAPTER_00_._COMBAT_TRAINING', 'CHAPTER_01_._TRIAL_RUN', 'CHAPTER_02_._ENGINES_OF_EVIL', 'CHAPTER_03_._PUZZLE_PIECES', 'CHAPTER_04_._TIGER_BY_THE_TAIL', 'CHAPTER_05_._HOT_PURSUIT', 'CHAPTER_06_._COUNTERATTACK', 'CHAPTER_07_._A_FRIEND_IN_NEED', 'CHAPTER_08_._AN_INNOCENT_LIFE', 'CHAPTER_09_._TRUTH_AND_CONSEQUENCES', 'CHAPTER_10_._CAT_AND_MOUSE', 'CHAPTER_11_._DREAM_DIVER', 'CHAPTER_12_._SINS_OF_THE_FATHER', 'CHAPTER_13_._PHOENIX_RISING', 'CHAPTER_14_._DAWN_OF_THE_CHRYSALIS']
34
35# Tuple of patterns for recognizing wikilinks
36# Pattern 1: Detect "[[anything]]", "[[any:thing]]", "[[any|thing]]", "[[any:thi|ng]]"
37# Pattern 2: Detect "{{SectionLink|Page|Section name}}", "{{SectionLink||Section name}}"
38link_patterns = ("\[\[[^|\]]*(\||\])", "\{\{SectionLink\|[^|\}]*\|[^|\}]*\}\}")
39
40# Initialize globals
41debug = 0
42pages_checked = 0
43iw_found = 0
44advice_issued = 0
45errors_issued = 0
46
47# Searches the given page text for intrawiki links with section links in them
48def scan_for_intrawiki_links(page_text, page_name):
49 global debug
50 global pages_checked
51 global iw_found
52 global advice_issued
53 global errors_issued
54 pages_checked += 1
55 name_printed = 0
56
57 for i, the_pattern in enumerate(link_patterns):
58 if debug:
59 if i == 0:
60 pywikibot.stdout(' Checking page for wikilinks with section names.')
61 elif i == 1:
62 pywikibot.stdout(' Checking page for {{SectionLink}} calls.')
63
64 for match in re.finditer(the_pattern, page_text):
65 found_iw_match = False
66 iw_url = ""
67 page_name2 = page_name
68
69 # Cut out the matched text from the page, isolating just the page+section name
70 target_start = 2 # "[["
71 target_end = 1 # "|" or "]" (we only match the first ending bracket)
72 if i == 1:
73 target_start = 14 # "{{SectionLink|"
74 target_end = 2 # "}}"
75 s = match.start() + target_start # remove the link-opening markup
76 e = match.end() - target_end # remove the link-ending markup
77 link_text = page_text[s:e]
78
79 # The second link type will look like "Page|Section" or "|Section", so fix that pipe
80 if i == 1:
81 link_text = link_text.replace('|', '#')
82
83 # Sometimes we use a space char. instead of a '_', so fix that before querying
84 link_text = link_text.replace(' ', '_')
85 if debug: pywikibot.stdout(' Found link {0}.'.format(link_text))
86
87 # If this link doesn't have a section link in it, then we don't care about it, as
88 # MediaWiki takes care of checking basic intrawiki links
89 if not '#' in link_text:
90 if debug: pywikibot.stdout(' Link doesn\'t have a section anchor in it. Skipping.')
91 continue
92
93 # If this link has an interwiki prefix, it can be ignored; see check_interwiki_links.py
94 # for the task of checking interwiki page+section links
95 is_interwiki = False
96 if found_iw_match == False:
97 for prefix in interwiki_prefixes:
98 if prefix + ":" in link_text:
99 if debug: pywikibot.stdout(' Skipping link {} because it is an interwiki link.'.format(link_text))
100 is_interwiki = True
101 break
102 if is_interwiki:
103 continue
104
105 # If there is a '{' in the link, then probably it's a link built on transcluded text
106 # like "Quotes/Diary#{{C3}}", which we cannot expand and work with, so skip it
107 if '{' in link_text:
108 ch_link_pattern = re.compile(r"{{C[0-9]*}}")
109 ch_link = ch_link_pattern.search(link_text)
110 if debug: pywikibot.stdout(' Found transclusion in link: "{}".'.format(ch_link.group(0)))
111 if ch_link:
112 ch_link_match = ch_link.group(0)
113 ch_num_pattern = re.compile("[0-9]+")
114 ch_num = ch_num_pattern.search(ch_link_match)
115 if ch_num:
116 ch_num_match = int(ch_num.group(0))
117 if ch_num_match >= 0 and ch_num_match <= 14:
118 ch_name = chapter_names[ch_num_match]
119 replace_pattern = re.compile(r"{{C" + ch_num.group(0) + r"}}")
120 link_text = replace_pattern.sub(ch_name, link_text)
121 if debug: pywikibot.stdout(' After performing transclusion, link is now "{}".'.format(link_text))
122 else:
123 if not name_printed and not debug:
124 pywikibot.stdout('From page "{}":'.format(page_name))
125 name_printed = 1
126 pywikibot.stdout(' ADVICE: Link {0} transcludes a chapter name using an out-of-range number, {1}.'.format(link_text, ch_num_match))
127 advice_issued += 1
128 continue
129 else:
130 if not name_printed and not debug:
131 pywikibot.stdout('From page "{}":'.format(page_name))
132 name_printed = 1
133 pywikibot.stdout(' ADVICE: Link {} seems to be transcluding a chapter name, but this script couldn\'t read it.'.format(link_text))
134 advice_issued += 1
135 continue
136 else:
137 if not name_printed and not debug:
138 pywikibot.stdout('From page "{}":'.format(page_name))
139 name_printed = 1
140 pywikibot.stdout(' ADVICE: Link {0} seems to use transclusion. This script can understand chapter name transclusions such as "{1}" but it doesn\'t recognize this one so it can\'t be verified. You should check the link manually.'.format(link_text, "{{C7}}"))
141 advice_issued += 1
142 continue
143
144 # If this is a relative "/" link, use the current page as the basis for the URL. Note
145 # that only a leading slash is looked for, so if there's multiple steps down ("/x/y"),
146 # we're out of luck.
147 if link_text.startswith('/'):
148 link_text = page_name + link_text
149 if debug: pywikibot.stdout(' Changed link_text to {} on account of "/".'.format(link_text))
150
151 # If this is a relative "../" link, find the parent page, set ourselves to that page,
152 # then remove the relative portion of the link. Note that this is only performed once,
153 # so if there's multiple steps back ("../../"), we're out of luck.
154 if link_text.startswith('../'):
155 last_slash = page_name.rfind('/')
156 page_name2 = page_name[0:last_slash]
157 if debug: pywikibot.stdout(' Changed page_name to {} on account of "../".'.format(page_name2))
158 link_text = link_text[3:len(link_text)]
159 if debug: pywikibot.stdout(' Changed link_text to {} on account of "../".'.format(link_text))
160 # If this is now going to be a bare section link for the parent page, don't add a
161 # slash, otherwise do because we are drilling down to another subpage
162 if link_text.startswith('#'):
163 link_text = page_name2 + link_text
164 else:
165 link_text = page_name2 + '/' + link_text
166
167 # If this is a bare section link, build URL based on this page
168 if link_text.startswith('#'):
169 iw_url = onigalore_url + page_name2
170 iw_found += 1
171 if debug: pywikibot.stdout(' Found link to this very page, {}.'.format(link_text))
172 found_iw_match = True
173 link_text = page_name2 + link_text
174
175 # If there's no ":" in the link (before the section link, where a colon would just be
176 # part of the text) then it's a Main namespace article; proceed with building URL
177 if found_iw_match == False:
178 if not re.search(":.*#", link_text):
179 iw_url = onigalore_url + link_text
180 iw_found += 1
181 if debug: pywikibot.stdout(' Link is to a Main namespace page.')
182 found_iw_match = True
183
184 # If there is a ":", match the prefix against the intrawiki prefixes on OniGalore
185 # before building URL
186 if found_iw_match == False:
187 for prefix in intrawiki_prefixes:
188 if prefix + ":" in link_text:
189 iw_url = onigalore_url + link_text
190 if debug: pywikibot.stdout(' Identified namespace {}.'.format(prefix))
191 iw_found += 1
192 found_iw_match = True
193 break
194
195 # If we still haven't turned this match into a URL, something's gone wrong
196 if (found_iw_match == False) or (iw_url == ""):
197 if not name_printed and not debug:
198 pywikibot.stdout('From page "{}":'.format(page_name))
199 name_printed = 1
200 pywikibot.stdout(' ERROR: Couldn\'t figure out link {}.'.format(link_text))
201 continue
202
203 # Test the URL
204 iw_url = iw_url.replace(' ', '_')
205 if debug: pywikibot.stdout(' Reading page at {}...'.format(iw_url))
206 response = fetch(iw_url)
207
208 # Redirects are followed automatically by fetch() and treated as "200"s; the way we can
209 # tell that a redirect occurred is by checking fetch's history
210 if response.history != []:
211 if not name_printed and not debug:
212 pywikibot.stdout('From page "{}":'.format(page_name))
213 name_printed = 1
214 pywikibot.stdout(' ADVICE: Got redirection code ({0}) on URL "{1}". You should check the link manually.'.format(response.history[0], iw_url))
215 advice_issued += 1
216 elif response.status_code != 200:
217 if not name_printed and not debug:
218 pywikibot.stdout('From page "{}":'.format(page_name))
219 name_printed = 1
220 pywikibot.stdout(' ERROR: Got response code {0} on URL {1}. The target page may not exist.'.format(response.status_code, iw_url))
221 errors_issued += 1
222 else:
223 # Isolate section link
224 pre_section, section_name = link_text.split('#', 1)
225 if debug: pywikibot.stdout(' Searching for section link {} on page.'.format(section_name))
226
227 # Convert slash character to the dot-notation hex encoding that MediaWiki uses
228 section_name = section_name.replace('/', '.2F')
229
230 # Read linked page to see if it really has this anchor link
231 soup = BeautifulSoup(response.text, 'html.parser')
232 found_section = False
233 for span_tag in soup.findAll('span'):
234 span_name = span_tag.get('id', None)
235 if span_name == section_name:
236 if debug: pywikibot.stdout(' Found section!')
237 found_section = True
238 break
239 if found_section == False:
240 if not name_printed and not debug:
241 pywikibot.stdout('From page "{}":'.format(page_name))
242 name_printed = 1
243 pywikibot.stdout(' ERROR: Could not find section {0} on page {1}!'.format(section_name, pre_section))
244 errors_issued += 1
245
246def main(*args):
247 global debug
248 global pages_checked
249 global iw_found
250 global advice_issued
251 global errors_issued
252 search_cat = ''
253 search_page = ''
254
255 local_args = pywikibot.handle_args(args)
256 genFactory = pagegenerators.GeneratorFactory()
257
258 for arg in local_args:
259 if arg.startswith('-cat:'):
260 search_cat = arg[5:]
261 elif arg.startswith('-page:'):
262 search_page = arg[6:]
263 elif arg == '-dbg':
264 debug = 1
265 else:
266 pywikibot.stdout('Unknown argument "{}".'.format(arg))
267 return
268
269 site = pywikibot.Site()
270
271 # This line of code enumerates the methods in the 'page' class
272 #pywikibot.stdout(format(dir(page)))
273
274 if search_cat != '':
275 cat_obj = pywikibot.Category(site, search_cat)
276 generator = pagegenerators.CategorizedPageGenerator(cat_obj, recurse=True)
277 for page in pagegenerators.PreloadingGenerator(generator, 100):
278 if debug: pywikibot.stdout('Checking page {0}'.format(page.title()))
279 scan_for_intrawiki_links(page.text, page.title())
280 elif search_page != '':
281 page = pywikibot.Page(site, search_page)
282 if debug: pywikibot.stdout('Checking page {0}'.format(page.title()))
283 scan_for_intrawiki_links(page.text, page.title())
284
285 page_str = "pages"
286 if pages_checked == 1:
287 page_str = "page"
288
289 link_str = "links"
290 if iw_found == 1:
291 link_str = "link"
292
293 pywikibot.stdout('Checked {0} {1} and found {2} intrawiki {3}.'.format(pages_checked, page_str, iw_found, link_str))
294 pywikibot.stdout('While attempting to follow section links...')
295
296 if advice_issued == 0:
297 pywikibot.stdout(' No advice on potential problems was issued.')
298 elif advice_issued == 1:
299 pywikibot.stdout(' 1 piece of advice on a potential problem was issued.')
300 else:
301 pywikibot.stdout(' {} pieces of advice on potential problems were issued.'.format(advice_issued))
302
303 error_str = "errors were"
304 if errors_issued == 1:
305 error_str = "error was"
306 pywikibot.stdout(' {0} {1} encountered.'.format(errors_issued, error_str))
307
308if __name__ == '__main__':
309 main()
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