189 lines
8.3 KiB
Python
189 lines
8.3 KiB
Python
# based on http://protips.readthedocs.io/link-roles.html
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from __future__ import print_function
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from __future__ import unicode_literals
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import re
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import os
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import subprocess
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from docutils import nodes
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from collections import namedtuple
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from sphinx.transforms.post_transforms import SphinxPostTransform
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def get_github_rev():
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path = subprocess.check_output(['git', 'rev-parse', '--short', 'HEAD']).strip().decode('utf-8')
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try:
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tag = subprocess.check_output(['git', 'describe', '--exact-match']).strip().decode('utf-8')
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except subprocess.CalledProcessError:
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tag = None
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print('Git commit ID: ', path)
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if tag:
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print('Git tag: ', tag)
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return tag
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return path
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# Creates a dict of all submodules with the format {submodule_path : (url relative to git root), commit)}
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def get_submodules():
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git_root = subprocess.check_output(['git', 'rev-parse', '--show-toplevel']).strip().decode('utf-8')
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gitmodules_file = os.path.join(git_root, '.gitmodules')
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submodules = subprocess.check_output(['git', 'submodule', 'status']).strip().decode('utf-8').split('\n')
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submodule_dict = {}
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Submodule = namedtuple('Submodule', 'url rev')
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for sub in submodules:
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sub_info = sub.lstrip().split(' ')
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# Get short hash, 7 digits
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rev = sub_info[0].lstrip('-')[0:7]
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path = sub_info[1].lstrip('./')
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config_key_arg = "submodule.{}.url".format(path)
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rel_url = subprocess.check_output(['git', 'config', '--file', gitmodules_file, '--get', config_key_arg]).decode('utf-8').lstrip('./').rstrip('\n')
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submodule_dict[path] = Submodule(rel_url, rev)
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return submodule_dict
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def url_join(*url_parts):
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""" Make a URL out of multiple components, assume first part is the https:// part and
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anything else is a path component """
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result = "/".join(url_parts)
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result = re.sub(r"([^:])//+", r"\1/", result) # remove any // that isn't in the https:// part
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return result
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def github_link(link_type, idf_rev, submods, root_path, app_config):
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def role(name, rawtext, text, lineno, inliner, options={}, content=[]):
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msgs = []
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BASE_URL = 'https://github.com/'
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IDF_REPO = "espressif/esp-idf"
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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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# Redirects to submodule repo if path is a submodule, else default to IDF repo
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def redirect_submodule(path, submods, rev):
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for key, value in submods.items():
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if path.lstrip('/').startswith(key):
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return value.url.replace('.git', ''), value.rev, re.sub('^/{}/'.format(key), '', path)
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return IDF_REPO, rev, path
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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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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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repo, repo_rev, rel_path = redirect_submodule(rel_path, submods, idf_rev)
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line_no = None
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url = url_join(BASE_URL, repo, link_type, repo_rev, 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], msgs
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return role
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class translation_link(nodes.Element):
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"""Node for "link_to_translation" role."""
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# Linking to translation is done at the "writing" stage to avoid issues with the info being cached between builders
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def link_to_translation(name, rawtext, text, lineno, inliner, options={}, content=[]):
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node = translation_link()
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node['expr'] = (rawtext, text, options)
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return [node], []
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class TranslationLinkNodeTransform(SphinxPostTransform):
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# Transform needs to happen early to ensure the new reference node is also transformed
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default_priority = 0
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def run(self, **kwargs):
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# Only output relative links if building HTML
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for node in self.document.traverse(translation_link):
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if 'html' in self.app.builder.name:
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rawtext, text, options = node['expr']
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(language, link_text) = text.split(':')
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env = self.document.settings.env
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docname = env.docname
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doc_path = env.doc2path(docname, None, None)
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return_path = '../' * doc_path.count('/') # path back to the root from 'docname'
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# then take off 3 more paths for language/release/targetname and build the new URL
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url = "{}.html".format(os.path.join(return_path, '../../..', language, env.config.release,
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env.config.idf_target, docname))
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node.replace_self(nodes.reference(rawtext, link_text, refuri=url, **options))
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else:
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node.replace_self([])
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def setup(app):
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rev = get_github_rev()
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submods = get_submodules()
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# links to files or folders on the GitHub
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app.add_role('idf', github_link('tree', rev, submods, '/', app.config))
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app.add_role('idf_file', github_link('blob', rev, submods, '/', app.config))
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app.add_role('idf_raw', github_link('raw', rev, submods, '/', app.config))
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app.add_role('component', github_link('tree', rev, submods, '/components/', app.config))
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app.add_role('component_file', github_link('blob', rev, submods, '/components/', app.config))
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app.add_role('component_raw', github_link('raw', rev, submods, '/components/', app.config))
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app.add_role('example', github_link('tree', rev, submods, '/examples/', app.config))
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app.add_role('example_file', github_link('blob', rev, submods, '/examples/', app.config))
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app.add_role('example_raw', github_link('raw', rev, submods, '/examples/', app.config))
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# link to the current documentation file in specific language version
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app.add_role('link_to_translation', link_to_translation)
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app.add_node(translation_link)
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app.add_post_transform(TranslationLinkNodeTransform)
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return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.5'}
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