docs: Check local files exist (and are correct type) for custom link roles
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@ -25,16 +25,15 @@ def setup(app):
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rev = get_github_rev()
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# links to files or folders on the GitHub
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baseurl = 'https://github.com/espressif/esp-idf'
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app.add_role('idf', autolink('{}/tree/{}/%s'.format(baseurl, rev)))
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app.add_role('idf_file', autolink('{}/blob/{}/%s'.format(baseurl, rev)))
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app.add_role('idf_raw', autolink('{}/raw/{}/%s'.format(baseurl, rev)))
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app.add_role('component', autolink('{}/tree/{}/components/%s'.format(baseurl, rev)))
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app.add_role('component_file', autolink('{}/blob/{}/components/%s'.format(baseurl, rev)))
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app.add_role('component_raw', autolink('{}/raw/{}/components/%s'.format(baseurl, rev)))
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app.add_role('example', autolink('{}/tree/{}/examples/%s'.format(baseurl, rev)))
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app.add_role('example_file', autolink('{}/blob/{}/examples/%s'.format(baseurl, rev)))
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app.add_role('example_raw', autolink('{}/raw/{}/examples/%s'.format(baseurl, rev)))
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app.add_role('idf', github_link('tree', rev, '/', app.config))
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app.add_role('idf_file', github_link('blob', rev, '/', app.config))
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app.add_role('idf_raw', github_link('raw', rev, '/', app.config))
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app.add_role('component', github_link('tree', rev, '/components/', app.config))
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app.add_role('component_file', github_link('blob', rev, '/components/', app.config))
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app.add_role('component_raw', github_link('raw', rev, '/components/', app.config))
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app.add_role('example', github_link('tree', rev, '/examples/', app.config))
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app.add_role('example_file', github_link('blob', rev, '/examples/', app.config))
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app.add_role('example_raw', github_link('raw', rev, '/examples/', app.config))
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# link to the current documentation file in specific language version
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on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
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@ -49,21 +48,72 @@ def setup(app):
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app.add_role('link_to_translation', crosslink('%s../../%s/{}/%s.html'.format(tag_rev)))
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return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.1'}
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return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.2'}
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def autolink(pattern):
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def github_link(link_type, rev, root_path, app_config):
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def role(name, rawtext, text, lineno, inliner, options={}, content=[]):
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m = re.search('(.*)\s*<(.*)>', text) # noqa: W605 - regular expression
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msgs = []
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def warning(msg):
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system_msg = inliner.reporter.warning(msg)
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system_msg.line = lineno
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msgs.append(system_msg)
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BASE_URL = 'https://github.com/espressif/esp-idf'
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# search for a named link (:label<path>) with descriptive label vs a plain URL
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m = re.search(r'(.*)\s*<(.*)>', text)
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if m:
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link_text = m.group(1)
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link = m.group(2)
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else:
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link_text = text
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link = text
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url = pattern % (link,)
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rel_path = root_path + link
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abs_path = os.path.join(app_config.idf_path, rel_path.lstrip('/'))
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line_no = None
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url = BASE_URL + link_type + rel_path
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if '#L' in abs_path:
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# drop any URL line number from the file, line numbers take the form #Lnnn or #Lnnn-Lnnn for a range
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abs_path, line_no = abs_path.split('#L')
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line_no = re.search(r'^(\d+)(?:-L(\d+))?', line_no)
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if line_no is None:
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warning("Line number anchor in URL %s doesn't seem to be valid" % link)
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else:
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line_no = tuple(int(l) for l in line_no.groups() if l) # tuple of (nnn,) or (nnn, NNN) for ranges
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elif '#' in abs_path: # drop any other anchor from the line
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abs_path = abs_path.split('#')[0]
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warning("URL %s seems to contain an unusable anchor after the #, only line numbers are supported" % link)
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is_dir = (link_type == 'tree')
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if not os.path.exists(abs_path):
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warning("IDF path %s does not appear to exist (absolute path %s)" % (rel_path, abs_path))
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elif is_dir and not os.path.isdir(abs_path):
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# note these "wrong type" warnings are not strictly needed as GitHub will apply a redirect,
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# but the may become important in the future (plus make for cleaner links)
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warning("IDF path %s is not a directory but role :%s: is for linking to a directory, try :%s_file:" % (rel_path, name, name))
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elif not is_dir and os.path.isdir(abs_path):
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warning("IDF path %s is a directory but role :%s: is for linking to a file" % (rel_path, name))
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# check the line number is valid
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if line_no:
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if is_dir:
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warning("URL %s contains a line number anchor but role :%s: is for linking to a directory" % (rel_path, name, name))
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elif os.path.exists(abs_path) and not os.path.isdir(abs_path):
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with open(abs_path, "r") as f:
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lines = len(f.readlines())
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if any(True for l in line_no if l > lines):
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warning("URL %s specifies a range larger than file (file has %d lines)" % (rel_path, lines))
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if tuple(sorted(line_no)) != line_no: # second line number comes before first one!
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warning("URL %s specifies a backwards line number range" % rel_path)
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node = nodes.reference(rawtext, link_text, refuri=url, **options)
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return [node], []
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return [node], msgs
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return role
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