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devsiteParseHTML.py
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devsiteParseHTML.py
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import os
import re
import yaml
import logging
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
}
## Get the HTML tag
htmlTag = re.search(r'<html.*?>', content)
if htmlTag is None:
logging.warning('Does not contain <html> root element')
else:
htmlTag = htmlTag.group(0)
# Check the HTML tag contains the devsite
if htmlTag.find('devsite') == -1:
return content
# Isolate the <head>
headStart = content.find('<head')
headEnd = content.find('</head>')
head = content[headStart:headEnd].strip()
# Isolate the <body>
bodyStart = content.find('<body')
bodyEnd = content.rfind('</body>')
body = content[bodyStart:bodyEnd].strip()
body = re.sub(r'<body.*?>', '', body)
# Remove any comments {# something #}
body = re.sub(r'{#.+?#}', '', body)
body = re.sub(r'{% comment %}.*?{% endcomment %}(?ms)', '', body)
# Render any DevSite specific tags
body = devsiteHelper.renderDevSiteContent(body, lang)
# Read the project.yaml file
projectPath = re.search('name=\"project_path\" value=\"(.*?)\"', head)
projectPath = projectPath.group(1)
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))
# Read the book.yaml file and generate the left hand nav
bookPath = re.search('name=\"book_path\" value=\"(.*?)\"', head)
bookPath = bookPath.group(1)
bookYaml = devsiteHelper.parseBookYaml(bookPath, lang)
context['bookYaml'] = devsiteHelper.expandBook(bookYaml)
context['lowerTabs'] = devsiteHelper.getLowerTabs(bookYaml)
context['renderedLeftNav'] = devsiteHelper.getLeftNav(requestPath, bookYaml)
# 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']
# Read the page title
pageTitle = []
titleRO = re.search('<title>(.*?)</title>', head)
if titleRO:
title = titleRO.group(1)
pageTitle.append(title)
if body.find('<h1>') == -1:
body = '<h1 class="page-title">' + title + '</h1>\n\n' + body
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']
# Replaces <pre> tags with prettyprint enabled tags
body = re.sub(r'^<pre>(?m)', r'<pre class="prettyprint devsite-code-highlight">', body)
# Adds code highlighting support, which requires devsite-code-highlight
body = re.sub(r'^<pre class="prettyprint">(?m)', r'<pre class="prettyprint devsite-code-highlight">', body)
context['content'] = body
# Checks if the page should be displayed in full width mode
fullWidth = re.search('name=\"full_width\" value=\"true\"', head)
if fullWidth:
context['fullWidth'] = True
# # Build the table of contents & transform so it fits within DevSite
context['renderedTOC'] = '<b>TOC Not Implemented</b> for DevSite HTML Pages'
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
# Renders the content into the template
return render('gae/page-article.html', context)