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# based on http://protips.readthedocs.io/link-roles.html
#from __future__ import print_function, unicode_literals
import os
import re
import subprocess
from collections import namedtuple
from docutils import nodes
from sphinx.transforms.post_transforms import SphinxPostTransform
URL_BASE = {
"zh_CN": "https://lvgl.100ask.net/"
}
class translation_link(nodes.Element):
"""Node for "link_to_translation" role."""
# Linking to translation is done at the "writing" stage to avoid issues with the info being cached between builders
def link_to_translation(name, rawtext, text, lineno, inliner, options={}, content=[]):
node = translation_link()
node['expr'] = (rawtext, text, options)
return [node], []
class TranslationLinkNodeTransform(SphinxPostTransform):
# Transform needs to happen early to ensure the new reference node is also transformed
default_priority = 0
def run(self, **kwargs):
# Only output relative links if building HTML
for node in self.document.traverse(translation_link):
if 'html' in self.app.builder.name:
rawtext, text, options = node['expr']
(language, link_text) = text.split(':')
env = self.document.settings.env
docname = env.docname
#doc_path = env.doc2path(docname, False)
urlpath = os.environ['LVGL_URLPATH']+'/'
return_path = URL_BASE.get(language, "") + urlpath
url = '{}.html'.format(os.path.join(return_path, docname))
node.replace_self(nodes.reference(rawtext, link_text, refuri=url, **options))
else:
node.replace_self([])
def setup(app):
# link to the current documentation file in specific language version
app.add_role('link_to_translation', link_to_translation)
app.add_node(translation_link)
app.add_post_transform(TranslationLinkNodeTransform)
return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.5'}
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