💾 Archived View for mozz.us › markdown › render_html.py captured on 2022-07-16 at 14:51:28.

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⬅️ Previous capture (2020-09-24)

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#!/usr/bin/env python3
"""
Convert a JSON-encoded Gemini AST into an HTML document.
"""
from html import escape


def render_html(ast):

    body = ['<div style="max-width: 38rem; padding: 2rem; margin: auto">']
    for name, value in ast:

        if name == 'Horizontal Rule':
            body.append('<hr>')

        elif name == 'Title':
            body.append(f'<h1>{escape(value)}</h1>')

        elif name == 'Heading':
            body.append(f'<h2>{escape(value)}</h2>')

        elif name == 'Sub-Heading':
            body.append(f'<h3>{escape(value)}</h3>')

        elif name == 'Paragraph':
            body.append(f'<p>{escape(value)}</p>')

        elif name == 'Preformatted':
            body.append(f'<pre>{escape(value)}</pre>')

        elif name == 'Ordered List':
            body.append('<ol>')
            body.extend([f'<li>{escape(item)}</li>' for item in value])
            body.append('</ol>')

        elif name == 'Unordered List':
            body.append('<ul>')
            body.extend([f'<li>{escape(item)}</li>' for item in value])
            body.append('</ul>')

        elif name == 'Link':
            body.append('<div>')
            body.append(f'<a href="{escape(value[0])}">{escape(value[1])}</a>')
            body.append('</div>')

        else:
            raise ValueError(f'Unrecognized node name `{name}`')

    body.append('</div>')
    return '\n'.join(body)


def main():
    import argparse
    import sys
    import json

    parser = argparse.ArgumentParser(description=__doc__)
    parser.add_argument('infile', type=argparse.FileType('r'), default=sys.stdin)
    args = parser.parse_args()

    ast = json.load(args.infile)
    html = render_html(ast)
    sys.stdout.write(html)


if __name__ == '__main__':
    main()