+ {% block content %}{% endblock %} +

+ {{ post | safe }} +

+ + {% endblock %} + +Put in content/my_page.rst:: + + :title: My first page + :date: 01 Jan 1970 + + ============= + My first page + ============= + + Hello, World! + +Build site:: + + make + +See HTML in build/ dir. Write your own CSS styles. diff --git a/rst_blg.py b/rst_blg.py new file mode 100644 index 0000000..4acf013 --- /dev/null +++ b/rst_blg.py @@ -0,0 +1,236 @@ +__version__ = '0.1.0' + +import os +import sys +import shutil +import datetime +import logging +import toml +import jinja2 + +from typing import List +from collections import namedtuple +from docutils.core import publish_parts +from docutils.core import publish_doctree +from docutils.writers import html5_polyglot + +from docutils import nodes +from docutils.parsers.rst import directives +from pygments import highlight +from pygments.lexers import get_lexer_by_name +from pygments.formatters import HtmlFormatter + +# ------------------------------------------------------------- # +# Read TOML configuration file. # +# ------------------------------------------------------------- # + +with open('settings.toml', 'r') as file: + settings = toml.loads(file.read()) + +# ------------------------------------------------------------- # +# Setup logger. # +# ------------------------------------------------------------- # + +log = logging.getLogger('blog') +log.setLevel(logging.INFO) +handler = logging.StreamHandler(stream=sys.stdout) +handler.setFormatter( + logging.Formatter(fmt = '[%(asctime)s: %(levelname)s] %(message)s')) +log.addHandler(handler) + +# ------------------------------------------------------------- # +# Parse docinfo from rST files. # +# ------------------------------------------------------------- # + +# Code below is copy-pasted from https://github.com/zeddee/parsedocinfo +# and modified a little bit. Zeddee, thank you! +# Original license SPDX identifier: Apache-2.0 +# -- parsedocinfo BEGIN -- + +DocInfo = namedtuple("DocInfo", 'name body') + +def _traverse_fields(field: List) -> DocInfo: + field_name = field.getElementsByTagName("field_name")[0] + field_body = field.getElementsByTagName("field_body")[0] + return DocInfo(field_name.firstChild.nodeValue, + " ".join(val.firstChild.nodeValue for val in field_body.childNodes)) + +def _traverse_docinfo(docinfo_list: List) -> List[DocInfo]: + out = [] + for i in docinfo_list: + for node in i.childNodes: + if node.tagName == "field": + out.append(_traverse_fields(node)) + else: + out.append(DocInfo(node.tagName, + " ".join(val.nodeValue for val in node.childNodes) + ) + ) + return out + +def parsedocinfo(data: str) -> dict: + docinfo = publish_doctree(data).asdom().getElementsByTagName("docinfo") + return dict(_traverse_docinfo(docinfo)) + +# -- parsedocinfo END -- + +# ------------------------------------------------------------- # +# Extra reStructuredText directives and roles # +# ------------------------------------------------------------- # + +# Pygments reST `code-block` directive. +# Source: https://docutils.sourceforge.io/sandbox/code-block-directive/ +# `code-block` BEGIN + +pygments_formatter = HtmlFormatter() + +def pygments_directive(name, arguments, options, content, lineno, + content_offset, block_text, state, state_machine): + try: + lexer = get_lexer_by_name(arguments[0]) + except ValueError: + # no lexer found - use the text one instead of an exception + lexer = get_lexer_by_name('text') + parsed = highlight(u'\n'.join(content), lexer, pygments_formatter) + return [nodes.raw('', parsed, format='html')] + +pygments_directive.arguments = (1, 0, 1) +pygments_directive.content = 1 +directives.register_directive('code-block', pygments_directive) + +# `code-block` END + +# ------------------------------------------------------------- # +# Jinja2 specific functions. # +# ------------------------------------------------------------- # + +def render_template(template: str, templates_dir = '.', **kwargs) -> str: + """Render Jinja2 template from file. Usage:: + + render_template('index.j2', + templates_dir = './templates', + title = 'My title') + """ + env = jinja2.Environment(loader = jinja2.FileSystemLoader(templates_dir)) + return env.get_template(template).render(**kwargs) + +# ------------------------------------------------------------- # +# Render HTML from reStructuredText. # +# ------------------------------------------------------------- # + +def render_html_body(text: str) -> str: + """Return HTML body converted from reStructuredText. + See: + * help(docutils.core.publish_parts) + * https://docutils.sourceforge.io/docs/user/config.html + """ + html = publish_parts(source = text, writer = html5_polyglot.Writer(), + settings_overrides = settings['docutils'] + ) + return html['body'] + +# ------------------------------------------------------------- # +# File operations. # +# ------------------------------------------------------------- # + +def find_rst_files(directory: str) -> list: + """Return the list of rST files from directory. + Scan subdirectories too. + """ + file_list = [] + for root, dirs, files in os.walk(directory): + for name in files: + if os.path.splitext(name)[1] == '.rst': + file_list.append(os.path.join(root, name)) + return file_list + +def write_to_file(path: str, data: str): + with open(path, 'w', encoding = 'utf-8') as file: + file.write(data) + +def copy_files(source_dir: str, destination_dir: str): + shutil.copytree(source_dir, destination_dir, + ignore = shutil.ignore_patterns('*.rst'), + dirs_exist_ok = True) + +# ------------------------------------------------------------- # +# Build site! # +# ------------------------------------------------------------- # + +def validate_date_fmt(date: str): + try: + dt = datetime.datetime.strptime(date, + settings['site']['datetime_format']) + except ValueError as err: + log.error('Error: Wrong date format: %s' % err) + sys.exit(1) + +def build_site(): + + build_dir = settings['build']['build_dir'] + content_dir = settings['build']['content_dir'] + templates_dir = settings['build']['templates_dir'] + assets_dir = settings['build']['assets_dir'] + + os.makedirs(build_dir, exist_ok = True) + files = find_rst_files(content_dir) + posts_list = [] + + for rst_file in files: + with open(rst_file, 'r', encoding = 'utf-8') as rst: + source = rst.read() + + log.info('parse docinfo: %s' % rst_file) + meta = parsedocinfo(source) + meta_dict = meta + # TODO обработать ошибку при отсутствии :date: в файле + # TODO показывать ошибку при отсутствии :title: + validate_date_fmt(meta_dict['date']) + meta_dict['path'] = os.path.basename(rst_file).replace('.rst', '.html') + + # Don't append single pages into posts list + try: + meta_dict['not_a_post'] + except KeyError: + posts_list.append(meta_dict) + + # Render HTML files + html_file = os.path.basename(rst_file).replace('.rst', '.html') + + log.info('render html: %s' % html_file) + + html_body = render_html_body(source) + html_page = render_template('post.j2', + templates_dir = templates_dir, + pygments_theme = settings['pygments']['theme'], + site_title = settings['site']['title'], + page_title = meta['title'], + post = html_body) + write_to_file(os.path.join(build_dir, html_file), html_page) + + # Copy additional files to build_dir + log.info('copy assets and files from {}, {} to {}'.format( + assets_dir, content_dir, build_dir)) + assets_dest_dir = os.path.join(build_dir, + os.path.basename(assets_dir)) + copy_files(assets_dir, assets_dest_dir) + copy_files(content_dir, build_dir) + + # Sort posts by date (newest in top) + posts_list.sort( + key=lambda date: datetime.datetime.strptime(date['date'], "%d %b %Y"), + reverse = True) + + # Redner index page + log.info('generate index.html') + html_page = render_template('index.j2', + templates_dir = templates_dir, + pygments_theme = settings['pygments']['theme'], + site_title = settings['site']['title'], + page_title = settings['site']['index_page_title'], + posts = posts_list) + write_to_file(os.path.join(build_dir, 'index.html'), html_page) + log.info('success') + +if __name__ == '__main__': + build_site() diff --git a/settings.toml b/settings.toml new file mode 100644 index 0000000..f36bb6e --- /dev/null +++ b/settings.toml @@ -0,0 +1,21 @@ +[site] +title = 'Nixhacks' +index_page_title = 'Ещё один сайт про cисадмиство и программирование' +datetime_format = '%d %b %Y' +default_posts_template = 'post.j2' # not implemented +default_index_template = 'index.j2' # not implemented + +[build] +build_dir = 'build' +content_dir = 'content' +templates_dir = 'layouts' +assets_dir = 'assets' + +[pygments] +theme = 'solarized-light' + +# https://docutils.sourceforge.io/docs/user/config.html +[docutils] +initial_header_level = 2 +section_self_link = true +syntax_highlight = 'short'