Repository with sources and generator of https://larlet.fr/david/ https://larlet.fr/david/
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site.py 8.4KB

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  1. #!/usr/bin/env python3
  2. import fnmatch
  3. import locale
  4. import os
  5. from dataclasses import dataclass
  6. from datetime import datetime, timedelta
  7. from html import escape
  8. from pathlib import Path
  9. from textwrap import dedent
  10. from time import perf_counter
  11. import mistune
  12. from jinja2 import Environment as Env
  13. from jinja2 import FileSystemLoader
  14. from minicli import cli, run, wrap
  15. from mistune.directives import DirectiveInclude
  16. from PIL import Image
  17. from slugify import slugify
  18. # Useful for dates rendering within Jinja2.
  19. locale.setlocale(locale.LC_ALL, "fr_FR.UTF-8")
  20. HERE = Path(".")
  21. DAVID = HERE / "david"
  22. STATIC = HERE / ".." / "larlet-fr-static"
  23. DOMAIN = "https://larlet.fr"
  24. LOCAL_DOMAIN = "http://larlet.test:3579"
  25. # Hardcoding publication at 12 in Paris timezone.
  26. NORMALIZED_STRFTIME = "%Y-%m-%dT12:00:00+01:00"
  27. TODAY = datetime.today() + timedelta(hours=6)
  28. class MarkParser(mistune.InlineParser):
  29. """Parses `==foo==` as `<mark>foo</mark>`."""
  30. MARK = (
  31. r"(\={2})(?=[^\s*])("
  32. r"(?:\\[\\*]|[^*])*"
  33. r"(?:" + mistune.InlineParser.ESCAPE + r"|[^\s*]))\1"
  34. )
  35. RULE_NAMES = mistune.InlineParser.RULE_NAMES + ("mark",)
  36. def parse_mark(self, m, state):
  37. marker = m.group(1)
  38. text = m.group(2)
  39. return "mark", self.render(text, state)
  40. class MarkRenderer(mistune.HTMLRenderer):
  41. """To use in conjunction with `MarkParser`."""
  42. def mark(self, text):
  43. return "<mark>" + text + "</mark>"
  44. class ImgsWithSizesRenderer(MarkRenderer):
  45. """Renders images as <figure>s and add sizes (useful for lazy loading)."""
  46. def paragraph(self, text):
  47. # In case of a figure, we do not want the (non-standard) paragraph.
  48. if text.strip().startswith("<figure>"):
  49. return text
  50. return f"<p>{text}</p>\n"
  51. def image(self, src, alt="", title=None):
  52. full_path = STATIC / Path(src[1:])
  53. image = Image.open(full_path)
  54. width, height = image.size
  55. return dedent(
  56. f"""\
  57. <figure>
  58. <img src="{src}"
  59. alt="{alt}"
  60. loading="lazy" width="{width}" height="{height}" />
  61. <figcaption>{title}</figcaption>
  62. </figure>
  63. """
  64. )
  65. class H2AnchorsRenderer(ImgsWithSizesRenderer):
  66. """Custom renderer for H2 titles with anchors."""
  67. def heading(self, text, level):
  68. if level == 2:
  69. slug = slugify(text)
  70. return (
  71. f'<h2 id="{slug}">'
  72. f"{text} "
  73. f'<a href="#{slug}" title="Ancre vers cette partie" '
  74. f'aria-hidden="true">#</a>'
  75. f"</h2>"
  76. )
  77. else:
  78. return super().heading(text, level)
  79. # We want a custom renderer to create a hash/link for each H2 headings.
  80. markdown_with_h2_anchors = mistune.Markdown(
  81. renderer=H2AnchorsRenderer(escape=False),
  82. inline=MarkParser(H2AnchorsRenderer(escape=False)),
  83. plugins=[DirectiveInclude()],
  84. )
  85. # The second markdown is pertinent to generate articles for the feed,
  86. # we do not need anchors in that case.
  87. markdown_with_img_sizes = mistune.Markdown(
  88. renderer=ImgsWithSizesRenderer(escape=False),
  89. inline=MarkParser(ImgsWithSizesRenderer(escape=False)),
  90. plugins=[DirectiveInclude()],
  91. )
  92. # This is the jinja2 configuration to locate templates.
  93. environment = Env(loader=FileSystemLoader(str(DAVID / "templates")))
  94. def neighborhood(iterable, first=None, last=None):
  95. """
  96. Yield the (previous, current, next) items given an iterable.
  97. You can specify a `first` and/or `last` item for bounds.
  98. """
  99. iterator = iter(iterable)
  100. previous = first
  101. current = next(iterator) # Throws StopIteration if empty.
  102. for next_ in iterator:
  103. yield (previous, current, next_)
  104. previous = current
  105. current = next_
  106. yield (previous, current, last)
  107. def each_markdown_from(source_dir, file_name="*.md"):
  108. """Walk across the `source_dir` and return the md file paths."""
  109. for filename in fnmatch.filter(os.listdir(source_dir), file_name):
  110. yield os.path.join(source_dir, filename)
  111. @dataclass
  112. class Page:
  113. title: str
  114. content: str
  115. file_path: str
  116. lang: str = "fr"
  117. def __post_init__(self):
  118. suffix = len(".md")
  119. prefix = len("YYYY/MM-DD") + suffix
  120. date_str = self.file_path[-prefix:-suffix].replace("-", "/")
  121. self.url = f"/david/{date_str}/"
  122. self.date = datetime.strptime(date_str, "%Y/%m/%d").date()
  123. self.full_url = f"{DOMAIN}{self.url}"
  124. self.normalized_date = self.date.strftime(NORMALIZED_STRFTIME)
  125. self.escaped_title = escape(self.title)
  126. self.escaped_content = escape(
  127. self.content.replace('href="/', f'href="{DOMAIN}/')
  128. .replace('src="/', f'src="{DOMAIN}/')
  129. .replace('href="#', f'href="{self.full_url}#')
  130. )
  131. # Extract first paragraph.
  132. self.extract = self.content.split("</p>", 1)[0] + "</p>"
  133. def __lt__(self, other: "Page"):
  134. if not isinstance(other, Page):
  135. return NotImplemented
  136. return self.date < other.date
  137. @staticmethod
  138. def all(source: Path, only_published=True, with_h2_anchors=True):
  139. """Retrieve all pages sorted by desc."""
  140. page_list = []
  141. md = markdown_with_h2_anchors if with_h2_anchors else markdown_with_img_sizes
  142. for file_path in each_markdown_from(source):
  143. result = md.read(file_path)
  144. # Extract (and remove) the title from the generated page.
  145. title, content = result.split("</h1>", 1)
  146. h1_opening_size = len("<h1>")
  147. title = title[h1_opening_size:]
  148. page = Page(title, content, file_path)
  149. if only_published and page.is_draft:
  150. continue
  151. page_list.append(page)
  152. return sorted(page_list, reverse=True)
  153. @property
  154. def is_draft(self):
  155. return (
  156. datetime(year=self.date.year, month=self.date.month, day=self.date.day)
  157. > TODAY
  158. )
  159. @cli
  160. def orphans():
  161. """Print out fragments not linked to any page."""
  162. linked_fragments = []
  163. for file_path in each_markdown_from(DAVID / "2020"):
  164. for line in open(file_path).readlines():
  165. if line.startswith(".. include:: fragments/"):
  166. linked_fragments.append(line[len(".. include:: fragments/") : -1])
  167. all_fragments = []
  168. for file_path in each_markdown_from(DAVID / "2020" / "fragments"):
  169. all_fragments.append(file_path[len("david/2020/fragments/") :])
  170. for fragment_filename in set(all_fragments) - set(linked_fragments):
  171. # Prepending path for easy command+click from fish.
  172. print(f"Orphan: {DAVID / '2020' / 'fragments' / fragment_filename}")
  173. @cli
  174. def pages():
  175. """Build the agregations from fragments."""
  176. root_path = DAVID / "2020"
  177. for previous, page, next_ in neighborhood(
  178. reversed(Page.all(source=root_path, only_published=False)),
  179. first={
  180. "url": "/david/stream/",
  181. "title": "Streams 2009-2019",
  182. "is_draft": False,
  183. },
  184. ):
  185. template = environment.get_template("article_2020.html")
  186. content = template.render(page=page, prev=previous, next=next_,)
  187. target_path = Path(page.url[1:])
  188. target_path.mkdir(parents=True, exist_ok=True)
  189. open(target_path / "index.html", "w").write(content)
  190. if page.is_draft:
  191. print(f"Draft: {LOCAL_DOMAIN}{page.url} ({page.title})")
  192. template = environment.get_template("archives_2020.html")
  193. content = template.render(page_list=Page.all(source=root_path))
  194. open(root_path / "index.html", "w").write(content)
  195. @cli
  196. def home():
  197. """Build the home page with last published items."""
  198. template = environment.get_template("profil.html")
  199. content = template.render(page_list=Page.all(source=DAVID / "2020"),)
  200. open(DAVID / "index.html", "w").write(content)
  201. @cli
  202. def feed():
  203. """Generate a feed from last published items."""
  204. template = environment.get_template("feed.xml")
  205. content = template.render(
  206. page_list=Page.all(source=DAVID / "2020", with_h2_anchors=False),
  207. current_dt=TODAY.strftime(NORMALIZED_STRFTIME),
  208. BASE_URL=f"{DOMAIN}/david/",
  209. )
  210. open(DAVID / "log" / "index.xml", "w").write(content)
  211. @wrap
  212. def perf_wrapper():
  213. start = perf_counter()
  214. yield
  215. elapsed = perf_counter() - start
  216. print(f"Done in {elapsed:.5f} seconds.")
  217. if __name__ == "__main__":
  218. run()