Files
tt-support-tools/markdown_utils.py
T

77 lines
2.5 KiB
Python

import os
import shutil
from typing import Any, Dict
import mistune
from mistune.renderers.markdown import MarkdownRenderer
class HeadingsRenderer(MarkdownRenderer):
def __init__(self, min_level: int):
super().__init__()
self.min_level = min_level
self.initial_level = float("inf")
def heading(self, token: Dict[str, Any], state: Any):
if self.initial_level == float("inf"):
self.initial_level = token["attrs"]["level"]
token["attrs"]["level"] += self.min_level - max(1, self.initial_level)
return super().heading(token, state)
def limit_markdown_headings(source: str, min_level: int) -> str:
markdown = mistune.create_markdown(renderer=HeadingsRenderer(min_level))
return markdown(source)
class ImagePathRewriterRenderer(MarkdownRenderer):
def __init__(self, prefix: str):
super().__init__()
self.prefix = prefix
def image(self, token, state):
url = token["attrs"]["url"]
if "://" not in url and not url.startswith("/"):
token["attrs"]["url"] = os.path.join(self.prefix, url)
elif ".." in url:
token["attrs"]["url"] = ""
elif url.startswith("/"):
token["attrs"]["url"] = os.path.join(self.prefix, "../" + url[1:])
return super().image(token, state)
def rewrite_image_paths(source: str, prefix: str) -> str:
markdown = mistune.create_markdown(renderer=ImagePathRewriterRenderer(prefix))
return markdown(source)
class WebsiteImagePathRewriterRenderer(MarkdownRenderer):
def __init__(self, source_dir: str, target_dir: str):
super().__init__()
self.source_dir = source_dir
self.target_dir = target_dir
def image(self, token, state):
url = token["attrs"]["url"]
if ".." in url:
token["attrs"]["url"] = ""
elif "://" not in url and not url.startswith("/"):
filename = os.path.basename(url)
if url.startswith("/"):
url = "../" + url[1:]
shutil.copyfile(
os.path.join(self.source_dir, url),
os.path.join(self.target_dir, filename),
)
token["attrs"]["url"] = f"images/{filename}"
return super().image(token, state)
def rewrite_image_paths_for_website(
source: str, source_dir: str, target_dir: str
) -> str:
markdown = mistune.create_markdown(
renderer=WebsiteImagePathRewriterRenderer(source_dir, target_dir)
)
return markdown(source)