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# Check Interwiki Links |
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# by iritscen@yahoo.com |
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# Looks at each link on a page (or in all the pages in a category) which uses a registered |
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# interwiki prefix and loads the linked page, verifying that it exists and that any section |
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# link, if present, is valid as well. The output will use the word "ERROR" when it cannot |
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# validate the interwiki link. |
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# Recommended viewing width: |
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# |---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---| |
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|
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import os |
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|
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from urllib.parse import urljoin |
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|
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import pywikibot |
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import re |
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import requests # for listing members with dir() |
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|
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from pywikibot.bot import QuitKeyboardInterrupt |
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from pywikibot import pagegenerators |
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from pywikibot.tools.formatter import color_format |
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from pywikibot.comms.http import fetch |
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from pywikibot.specialbots import UploadRobot |
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from bs4 import BeautifulSoup |
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|
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# Parallel arrays based on https://wiki.oni2.net/Special:Interwiki |
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interwiki_prefixes = ('acronym', 'cache', 'commons', 'dictionary', 'google', 'metawikimedia', 'mw', 'wikibooks', 'wikidata', 'wikimedia', 'wikinews', 'wikipedia', 'wikiquote', 'wikisource', 'wikispecies', 'wikiversity', 'wikivoyage', 'wikt', 'wiktionary', 'wp') |
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|
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interwiki_urls = ('http://www.acronymfinder.com/~/search/af.aspx?string=exact&Acronym=', 'http://www.google.com/search?q=cache:', 'https://commons.wikimedia.org/wiki/', 'http://www.dict.org/bin/Dict?Database=*&Form=Dict1&Strategy=*&Query=', 'http://www.google.com/search?q=', 'https://meta.wikimedia.org/wiki/', 'https://www.mediawiki.org/wiki/', 'https://en.wikibooks.org/wiki/', 'https://www.wikidata.org/wiki/', 'https://foundation.wikimedia.org/wiki/', 'https://en.wikinews.org/wiki/', 'https://en.wikipedia.org/wiki/', 'https://en.wikiquote.org/wiki/', 'https://wikisource.org/wiki/', 'https://species.wikimedia.org/wiki/', 'https://en.wikiversity.org/wiki/', 'https://en.wikivoyage.org/wiki/', 'https://en.wiktionary.org/wiki/', 'https://en.wiktionary.org/wiki/', 'https://en.wikipedia.org/wiki/') |
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|
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pages_checked = 0 |
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iw_found = 0 |
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errors_issued = 0 |
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|
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# Searches the given page text for interwiki links |
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def scan_for_iw_links(page_text): |
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global pages_checked |
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global iw_found |
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global errors_issued |
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pages_checked = pages_checked + 1 |
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cur = 0 |
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|
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for prefix in interwiki_prefixes: |
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# Isolate strings that start with "[[prefix:" and end with "|" or "]" |
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iw_link = "\[\[" + prefix + ":[^|\]]*(\||\])" |
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for match in re.finditer(iw_link, page_text): |
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# Extract just the page title from this regex match |
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s = match.start() + 2 + len(prefix) + 1 |
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e = match.end() - 1 |
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|
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# Sometimes we used a space char. instead of a '_', so fix that before querying |
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page_title = page_text[s:e].replace(' ', '_') |
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|
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# Use only spaces for title when printing it |
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page_title_human = page_title.replace('_', ' ') |
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pywikibot.stdout(' Validating {0} link "{1}"'.format(prefix, page_title_human)) |
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iw_found = iw_found + 1 |
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|
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# Construct full URL for the particular wiki |
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iw_url = interwiki_urls[cur] + page_title |
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|
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# Adjust URL if this is a foreign-language WP link |
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if re.match("^[a-zA-Z]{2}:", page_title): |
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lang_code = page_title[0:2] + "." |
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# "wp:" is the Wikipedia: namespace, not a language |
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if lang_code != "wp." and lang_code != "WP.": |
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iw_url = iw_url.replace('en.', lang_code) |
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iw_url = iw_url.replace(page_title[0:3], '') |
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|
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# Test the URL |
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response = fetch(iw_url) |
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|
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# One way we tell that a redirect occurred is by checking the history |
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if response.history != []: |
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pywikibot.stdout(' ERROR: Got redirection code ({0}) on URL "{1}".'.format(response.history[0], iw_url)) |
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errors_issued = errors_issued + 1 |
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elif response.status_code != 200: |
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pywikibot.stdout(' ERROR: Got response code {0} on URL "{1}".'.format(response.status_code, iw_url)) |
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errors_issued = errors_issued + 1 |
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# The usual way that a redirect occurs is that MediaWiki redirects us sneakily |
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# using JavaScript, while returning code OK 200 as if the link was correct; we |
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# must detect this from the page source |
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elif 'Redirected from <a' in response.text: |
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# Extract link from this source which contains name of redirected-to page: |
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# <link rel="canonical" href="https://en.wikipedia.org/wiki/Page_name"/> |
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canonical_name = response.text.split('<link rel="canonical" href="')[-1] |
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prefix_length = len(interwiki_urls[cur]) |
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canonical_name = canonical_name[prefix_length:] |
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tag_end = canonical_name.find('"/>') |
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if tag_end == -1: |
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pywikibot.stdout(' ERROR: This is a redirect page (but I could not isolate the correct page name).') |
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else: |
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canonical_name = canonical_name[:tag_end] |
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if len(canonical_name) > 100: |
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# Certain things can cause the trim to fail; here we avoid slamming |
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# the output with massive page source from a failed trim |
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pywikibot.stdout(' ERROR: This is a redirect to "{}" (string trimmed to 100 chars due to excessive length).'.format(canonical_name[:100])) |
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else: |
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canonical_name = canonical_name.replace('_', ' ') |
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pywikibot.stdout(' ERROR: This is a redirect to "{}".'.format(canonical_name)) |
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errors_issued = errors_issued + 1 |
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elif '#' in page_title: |
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# Isolate section link |
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page_name, anchor_name = page_title.split('#') |
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|
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# Convert dot-notation hex entities to proper characters |
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anchor_name = anchor_name.replace('.22', '"') |
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anchor_name = anchor_name.replace('.27', '\'') |
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anchor_name = anchor_name.replace('.28', '(') |
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anchor_name = anchor_name.replace('.29', ')') |
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|
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# Read linked page to see if it really has this anchor link |
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soup = BeautifulSoup(response.text, 'html.parser') |
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found_section = False |
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for span_tag in soup.findAll('span'): |
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span_name = span_tag.get('id', None) |
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if span_name == anchor_name: |
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found_section = True |
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break |
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if found_section == False: |
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pywikibot.stdout(' ERROR: Could not find section {0} on page {1}.'.format(anchor_name, page_name)) |
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errors_issued = errors_issued + 1 |
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cur = cur + 1 |
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|
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def main(*args): |
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cat_name = '' |
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page_name = '' |
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|
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local_args = pywikibot.handle_args(args) |
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genFactory = pagegenerators.GeneratorFactory() |
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|
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for arg in local_args: |
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if arg.startswith('-cat:'): |
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cat_name = arg[5:] |
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elif arg.startswith('-page:'): |
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page_name = arg[6:] |
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|
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site = pywikibot.Site() |
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|
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#pywikibot.stdout('The members of the requests.models.Response class are:') |
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#pywikibot.stdout(format(dir(requests.models.Response))) |
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|
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if cat_name != '': |
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cat_obj = pywikibot.Category(site, cat_name) |
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generator = pagegenerators.CategorizedPageGenerator(cat_obj, recurse=True) |
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for page in pagegenerators.PreloadingGenerator(generator, 100): |
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pywikibot.stdout('Checking page "{}"'.format(page.title())) |
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scan_for_iw_links(page.text) |
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elif page_name != '': |
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page = pywikibot.Page(site, page_name) |
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pywikibot.stdout('Checking page "{}"'.format(page.title())) |
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scan_for_iw_links(page.text) |
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|
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global pages_checked |
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global iw_found |
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global errors_issued |
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|
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page_str = "pages" |
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if pages_checked == 1: |
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page_str = "page" |
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|
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link_str = "links" |
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if iw_found == 1: |
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link_str = "link" |
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|
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pywikibot.stdout('Checked {0} {1} and found {2} interwiki {3}.'.format(pages_checked, page_str, iw_found, link_str)) |
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|
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error_str = "errors were" |
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if errors_issued == 1: |
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error_str = "error was" |
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|
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pywikibot.stdout('{0} {1} encountered in validating these links.'.format(errors_issued, error_str)) |
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|
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if __name__ == '__main__': |
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main() |
