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devsiteParseMD.py
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devsiteParseMD.py
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import os
import re
import yaml
import logging
import markdown
import devsiteHelper
from google.appengine.ext.webapp.template import render
SOURCE_PATH = os.path.join(os.path.dirname(__file__), 'src/content/')
SERVED_FROM_AE = not os.environ['SERVER_SOFTWARE'].startswith('Dev')
def parse(requestPath, fileLocation, content, lang='en'):
context = {
'lang': lang,
'requestPath': requestPath.replace('/index', ''),
'bodyClass': 'devsite-doc-page',
'servedFromAppEngine': SERVED_FROM_AE
}
## Injects markdown includes into the markdown as appropriate
includes = re.findall(r'^<<.+?\.md>>(?m)', content)
for includeTag in includes:
fileName = includeTag.replace('<<', '').replace('>>', '')
fileName = os.path.join(os.path.dirname(fileLocation), fileName)
include = devsiteHelper.readFile(fileName, lang)
if include is None:
include = 'Warning: Unable to find included markdown file.\n\n'
content = content.replace(includeTag, include)
# Remove any comments {# something #}
content = re.sub(r'{#.+?#}', '', content)
content = re.sub(r'{% comment %}.*?{% endcomment %}(?ms)', '', content)
# Remove any markdown=1 since it's not supported
content = re.sub(r'markdown=[\'\"]?1[\'\"]?', '', content)
# Render any DevSite specific tags
content = devsiteHelper.renderDevSiteContent(content, lang)
# Turn Callouts into the appropriate HTML elements
content = re.sub(r'^Note: (.*?)\n^\n(?ms)', r'<aside class="note" markdown="1"><strong>Note:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Caution: (.*?)\n^\n(?ms)', r'<aside class="caution" markdown="1"><strong>Caution:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Warning: (.*?)\n^\n(?ms)', r'<aside class="warning" markdown="1"><strong>Warning:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Key Point: (.*?)\n^\n(?ms)', r'<aside class="key-point" markdown="1"><strong>Key Point:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Key Term: (.*?)\n^\n(?ms)', r'<aside class="key-term" markdown="1"><strong>Key Term:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Objective: (.*?)\n^\n(?ms)', r'<aside class="objective" markdown="1"><strong>Objective:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Success: (.*?)\n^\n(?ms)', r'<aside class="success" markdown="1"><strong>Success:</strong> <span>\1</span></aside>', content)
content = re.sub(r'^Dogfood: (.*?)\n^\n(?ms)', r'<aside class="dogfood" markdown="1"><strong>Dogfood:</strong> <span>\1</span></aside>', content)
# Adds a set of markdown extensions available to us on DevSite
ext = [
'markdown.extensions.attr_list', # Adds support for {: #someid }
'markdown.extensions.meta', # Removes the meta data from the top of the doc
'markdown.extensions.toc', # Generate the TOC for the right side
'markdown.extensions.tables', # Support for Markdown Tables
'markdown.extensions.def_list', # Support for definition lists
'markdown.extensions.extra' #
]
md = markdown.Markdown(extensions=ext)
content = md.convert(content)
# Replaces <pre> tags with prettyprint enabled tags
content = re.sub(r'^<pre>(?m)', r'<pre class="prettyprint devsite-code-highlight">', content)
# Adds code highlighting support, which requires devsite-code-highlight
content = re.sub(r'^<pre class="prettyprint">(?m)', r'<pre class="prettyprint devsite-code-highlight">', content)
# Save the content
context['content'] = content
# Get the project_path and read/parse the project file.
projectPath = md.Meta['project_path'][0]
projectYaml = yaml.load(devsiteHelper.readFile(projectPath, lang))
context['projectYaml'] = projectYaml
# Read the parent project.yaml file if applicable
parentProjectYaml = None
if 'parent_project_metadata_path' in projectYaml:
parentprojectPath = projectYaml['parent_project_metadata_path']
parentProjectYaml = yaml.load(devsiteHelper.readFile(parentprojectPath, lang))
# Reads the book.yaml file and generate the lefthand nav
bookPath = md.Meta['book_path'][0]
bookYaml = devsiteHelper.parseBookYaml(bookPath, lang)
context['bookYaml'] = devsiteHelper.expandBook(bookYaml)
# context['lowerTabs'] = devsiteHelper.getLowerTabs(bookYaml)
context['renderedLeftNav'] = devsiteHelper.getLeftNav(requestPath, bookYaml)
lowerTabs = devsiteHelper.getLowerTabs(bookYaml)
context['lowerTabs'] = lowerTabs
# Get the logo row (TOP ROW) icon
context['logoRowIcon'] = projectYaml['icon']['path']
# Get the logo row (TOP ROW) title
if parentProjectYaml:
context['logoRowTitle'] = parentProjectYaml['name']
else:
context['logoRowTitle'] = projectYaml['name']
# Get the header title & description
context['headerTitle'] = projectYaml['name']
# headerDescription is rarely shown, hiding temporarily
# context['headerDescription'] = projectYaml['description']
# Get the page title
pageTitle = []
titleRO = re.search(r'<h1 class="page-title".*?>(.*?)<\/h1>', content)
if titleRO:
pageTitle.append(titleRO.group(1))
pageTitle.append(projectYaml['name'])
pageTitle.append('WebFu Staging')
context['pageTitle'] = ' | '.join(pageTitle)
# Get the footer path & read/parse the footer file.
footerPath = projectYaml['footer_path']
footers = yaml.load(devsiteHelper.readFile(footerPath, lang))['footer']
for item in footers:
if 'promos' in item:
context['footerPromos'] = item['promos']
elif 'linkboxes' in item:
context['footerLinks'] = item['linkboxes']
if 'full_width' in md.Meta and len(md.Meta['full_width']) == 1:
context['fullWidth'] = True
# Build the table of contents & transform so it fits within DevSite
toc = md.toc
toc = toc.strip()
# Strips the outer wrapper and the page title from the doc
toc = re.sub(r'<div class="toc">(.*?<ul>){2}(?s)', '', toc)
toc = re.sub(r'</ul>\s*</li>\s*</ul>\s*</div>(?s)', '', toc)
# Add appropriate classes
toc = re.sub(r'<ul>', '<ul class="devsite-page-nav-list">', toc)
toc = re.sub(r'<a href', '<a class="devsite-nav-title" href', toc)
toc = re.sub(r'<li>', '<li class="devsite-nav-item">', toc)
context['renderedTOC'] = toc;
gitHubEditUrl = 'https://github.com/google/WebFundamentals/blob/'
gitHubEditUrl += 'main/src/content/'
gitHubEditUrl += fileLocation.replace(SOURCE_PATH, '')
context['gitHubEditUrl'] = gitHubEditUrl
gitHubIssueUrl = 'https://github.com/google/WebFundamentals/issues/'
gitHubIssueUrl += 'new?title=Feedback for: ' + context['pageTitle'] + ' ['
gitHubIssueUrl += lang + ']&body='
gitHubIssueUrl += gitHubEditUrl
context['gitHubIssueUrl'] = gitHubIssueUrl
return render('gae/page-article.html', context)