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#!/usr/bin/env python3
from argparse import ArgumentParser
from itertools import chain
import json
from os import path
from pathlib import Path
from subprocess import run
from tempfile import NamedTemporaryFile
from git import Repo
from helpers import deserialize_directories, generate_crumbs, pandoc
def parse_arguments():
parser = ArgumentParser()
parser.add_argument(
'--template', help='Pandoc template for HTML output.'
)
parser.add_argument(
'--site-title', help='Prefix to add to <title>.'
)
parser.add_argument(
'--lua-filter', dest='filters', action='append',
help='Lua filter to run the page through.'
)
parser.add_argument(
'--stylesheet', dest='css', action='append',
help='CSS stylesheet to link to.'
)
parser.add_argument(
'site_tree', help='JSON file describing the page tree.'
)
parser.add_argument(
'target', help='Subfolder to generate an index for.'
)
parser.add_argument(
'output', help='Path to the output file.'
)
return parser.parse_args()
def list_files(tree_file, folder):
with open(tree_file) as tree:
directories = deserialize_directories(json.load(tree))
return directories[folder].subfolders, directories[folder].files
def has_title(document_path):
pandoc = run(
('pandoc', '-t', 'json', document_path),
check=True, text=True, capture_output=True
)
ast = json.loads(pandoc.stdout)
return 'title' in ast['meta']
def list_pages(files):
readme = None
pages = []
for f in files:
page = Path(f).stem
if page == 'README':
readme = f
else:
pages.append(page)
return pages, readme
def format_toc(directories, pages):
dir_template = '<li><a href="{d}/index.html">{d}/</a></li>'
page_template = '<li><a href="{p}.html">{p}</a></li>'
dir_list = (
dir_template.format(d=d) for d in directories
)
page_list = (
page_template.format(p=p) for p in pages
)
return '\n'.join((
'<ul>', *chain(dir_list, page_list), '</ul>'
))
def main(arguments):
target = arguments.target
folders, files = list_files(arguments.site_tree, target)
pages, readme = list_pages(files)
toc_title = f'Index for {target}' if target else 'Index'
html_toc = format_toc(folders, pages)
path_to_top = path.relpath('.', start=target)
stylesheets = (path.join(path_to_top, s) for s in arguments.css)
variables = {'crumbs': generate_crumbs(Path(target)/'index')}
metadata = {}
if arguments.site_title is not None:
metadata['sitetitle'] = arguments.site_title
if readme is not None:
repo_top = Repo(search_parent_directories=True).working_dir
readme_path = Path(repo_top, target, readme)
# If the README doesn't have a title, give a default to pandoc
# out-of-band.
if not has_title(readme_path):
metadata['pagetitle'] = target or 'README'
with NamedTemporaryFile(mode='w+') as toc:
toc.write(f'<h1>{toc_title}</h1>\n')
toc.write(html_toc)
toc.flush()
pandoc(
readme_path, arguments.output,
arguments.template, arguments.filters, stylesheets,
include_after=(toc.name,),
variables=variables, metadata=metadata
)
return
with NamedTemporaryFile(suffix='.md') as dummy_readme, \
NamedTemporaryFile(mode='w+') as toc:
toc.write(html_toc)
toc.flush()
metadata['pagetitle'] = toc_title
metadata['title'] = 'Index'
pandoc(
dummy_readme.name, arguments.output,
arguments.template, arguments.filters, stylesheets,
include_after=(toc.name,),
variables=variables, metadata=metadata
)
if __name__ == '__main__':
main(parse_arguments())
|
