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#!/usr/bin/env python3
from argparse import ArgumentParser
from itertools import chain
import json
from pathlib import Path
from subprocess import run
from git import Repo
from helpers import deserialize_directories
def parse_arguments():
parser = ArgumentParser()
parser.add_argument(
'site_tree', help='JSON file describing the page tree.'
)
parser.add_argument(
'--site-title', help='Prefix to add to <title>.'
)
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(markdown):
pandoc = run(
('pandoc', '-t', 'json'), input=markdown,
check=True, text=True, capture_output=True
)
ast = json.loads(pandoc.stdout)
return 'title' in ast['meta']
def format_readme_index(readme, title, items):
blocks = [
readme,
f'# {title}',
items
]
if not has_title(readme):
blocks.insert(0, '% README')
return '\n\n'.join(blocks)
def format_plain_index(title, items):
return '\n'.join((f'% {title}', items))
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_index(target, directories, files):
pages, readme = list_pages(files)
dir_list = (
f'- [{d}/]({d}/index.html)' for d in directories
)
page_list = (
f'- [{p}]({p}.html)' for p in pages
)
items = '\n'.join(chain(dir_list, page_list))
title = f'Index for {target}' if target else 'Index'
if readme is None:
return format_plain_index(title, items)
repo_top = Repo(search_parent_directories=True).working_dir
intro = Path(repo_top, target, readme).read_text()
return format_readme_index(intro, title, items)
def convert_page(content, output, site_title):
pandoc = (
'pandoc', '-s', '--lua-filter', 'convert-internal-links.lua',
'--template', 'template.html', '-o', output
)
if site_title is not None:
pandoc += ('-T', site_title)
run(pandoc, input=content, check=True, text=True)
def main(arguments):
folders, files = list_files(arguments.site_tree, arguments.target)
index_page = format_index(arguments.target, folders, files)
convert_page(index_page, arguments.output, arguments.site_title)
if __name__ == '__main__':
main(parse_arguments())
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