markdown: add an extension for image/video galleries

This will be used on program pages. Currently there is no check that
list elements are images and videos.
This commit is contained in:
Lephe 2022-04-21 22:07:49 +01:00
parent 610fe6f1fd
commit f53032fc88
Signed by: Lephenixnoir
GPG Key ID: 1BBA026E13FC0495
2 changed files with 41 additions and 0 deletions

View File

@ -12,6 +12,7 @@ from app.utils.markdown_extensions.hardbreaks import HardBreakExtension
from app.utils.markdown_extensions.escape_html import EscapeHtmlExtension
from app.utils.markdown_extensions.linkify import LinkifyExtension
from app.utils.markdown_extensions.media import MediaExtension
from app.utils.markdown_extensions.gallery import GalleryExtension
@app.template_filter('md')
@ -35,6 +36,7 @@ def md(text):
TocExtension(baselevel=2),
PCLinkExtension(),
MediaExtension(),
GalleryExtension(),
]
html = markdown(text, options=options, extensions=extensions)

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@ -0,0 +1,39 @@
from markdown.extensions import Extension
from markdown.treeprocessors import Treeprocessor
import xml.etree.ElementTree as etree
class GalleryTreeprocessor(Treeprocessor):
def run(self, doc):
for parent in doc.findall(".//ul/.."):
for idx, ul in enumerate(parent):
if ul.tag != "ul" or len(ul) == 0:
continue
has_gallery = False
# Option 1: In raw text in the <li>
if ul[-1].text and ul[-1].text.endswith("{gallery}"):
has_gallery = True
ul[-1].text = ul[-1].text[:-9]
# Option 2: After the last child (in its tail) \
if len(ul[-1]) and ul[-1][-1].tail and \
ul[-1][-1].tail.endswith("{gallery}"):
has_gallery = True
ul[-1][-1].tail = ul[-1][-1].tail[:-9]
if has_gallery:
# TODO: Manipulate the output tree
el = etree.Element("div")
p = etree.Element("p")
p.text = "<There is a gallery here:>"
parent.remove(ul)
el.append(p)
el.append(ul)
parent.insert(idx, el)
class GalleryExtension(Extension):
def __init__(self, **kwargs):
super().__init__(**kwargs)
def extendMarkdown(self, md):
md.treeprocessors.register(GalleryTreeprocessor(md), 'gallery', 8)
md.registerExtension(self)