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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Convert the markdown generated from Jupyter notebooks to preserve
rendered images, etc.
"""
import os
import pathlib
import re
import sys
import time
import traceback
import typing
from icecream import ic # pylint: disable=E0401
from selenium import webdriver # pylint: disable=E0401
class Converter:
"""
HTML/Markdown conversion
"""
PAT_HEADER = re.compile(r"^(```python\n\# for use.*production:\n.*\n```\n)", re.MULTILINE)
PAT_SOURCE = re.compile(r"\s+src\=\"(\S+)\"")
REPLACEMENT_HEADER: str = """
!!! note
To run this notebook in JupyterLab, load [`examples/{}.ipynb`]({}/examples/{}.ipynb)
"""
def __init__ (
self,
src_url: str,
) -> None:
"""
Constructor.
"""
self.src_url: str = src_url
def replace_sys_header (
self,
text: str,
stem: str,
*,
debug: bool = False,
) -> str:
"""
Replace the initial cell in a tutorial notebook.
"""
output: typing.List[ str ] = []
for chunk in self.PAT_HEADER.split(text):
m_header: typing.Optional[ re.Match ] = self.PAT_HEADER.match(chunk)
if debug:
ic(m_header)
if m_header:
header: str = self.REPLACEMENT_HEADER.format(stem, self.src_url, stem)
output.append(header)
else:
output.append(chunk)
return "\n".join(output)
def get_pyvis_html (
self,
iframe: str,
*,
debug: bool = False,
) -> str:
"""
Locate the HTML files generated by `PyVis` if any.
This assumes the HTML files are named `tmp.fig*.*`
"""
source_html: typing.Optional[ str ] = None
m_source: typing.Optional[ re.Match ] = self.PAT_SOURCE.search(iframe)
if m_source:
source_html = m_source.group(1)
if debug:
ic(source_html)
if "tmp.fig" not in source_html: # type: ignore
# <iframe/> wasn't generated by PyVis
source_html = None
return source_html # type: ignore
def render_screenshot (
self,
source_html: str,
source_png,
) -> None:
"""
use Selenium to render `source_png` from `source_html`
"""
#chrome_path = os.getcwd() + "/chromedriver"
#chrome_options = Options()
browser: webdriver.Chrome = webdriver.Chrome()
browser.get(source_html)
time.sleep(10)
browser.get_screenshot_as_file(source_png)
browser.quit()
def replace_pyvis_iframe (
self,
text: str,
parent: pathlib.Path,
stem: str,
*,
debug: bool = False,
) -> str:
"""
Substitute static images for the rendered graphs.
"""
output: typing.List[ str ] = []
in_iframe: bool = False
for line in text.split("\n"):
if line.startswith("<iframe"):
in_iframe = True
if not in_iframe:
output.append(line)
elif line.strip().startswith("src="):
src_html: str = self.get_pyvis_html(line)
src_png: str = src_html.replace(".html", ".png")
if debug:
ic(src_png)
try:
os.mkdir(f"{parent}/{stem}_files")
except: # pylint: disable=W0702
pass
self.render_screenshot(
f"file://{os.getcwd()}/examples/{src_html}",
f"{parent}/{stem}_files/{src_png}",
)
output.append(f"")
if line.startswith("></iframe>"):
in_iframe = False
return "\n".join(output)
if __name__ == "__main__":
try:
conv: Converter = Converter(
"https://github.com/DerwenAI/textgraphs/blob/main",
)
filename: pathlib.Path = pathlib.Path(sys.argv[1])
_parent: pathlib.Path = filename.parent
_stem: str = filename.stem
ic(filename, _parent, _stem)
with open(filename, "r", encoding = "utf-8") as fp:
html: str = fp.read()
html = conv.replace_sys_header( # pylint: disable=C0103
html,
_stem,
debug = False, # True
)
#print(text)
#sys.exit(0)
html = conv.replace_pyvis_iframe( # pylint: disable=C0103
html,
_parent,
_stem,
debug = True, # False
)
with open(filename, "w", encoding = "utf-8") as fp:
fp.write(html)
except Exception as ex: # pylint: disable=W0718
ic(ex)
traceback.print_exc()
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