Files
libretro/scripts/site_markdown.py
T
Abdessamad Derraz 16ec5fa2d2 docs: turn the readme into a front page
The README ran 211 lines and 2,000 words: five commands with options,
an 18-row download table, coverage figures and the build commands, all
before the help. It now says what the project does, gives the line that
installs for Windows and for the rest, shows it, lists the six ZIPs and
the setups that install by command, and leads to the site, where the
figures and every option live. The build commands sit in a closed block.
No personal pronoun is left in its text.
2026-11-09 07:28:32 +01:00

350 lines
13 KiB
Python

#!/usr/bin/env python3
"""Each built page as Markdown, for the assistants that read the site.
An assistant asked to help with BIOS files reads a page and answers from
it. The HTML carries navigation, icons, buttons and scripts around the
words. The Markdown copy carries the words, the tables, the commands and
the links, at `<page>/index.md` beside `<page>/index.html`. Every page's
head names it (`<link rel="alternate" type="text/markdown">`, set in
website/astro.config.mjs), and llms.txt says the convention.
`llms-full.txt` joins the Markdown of the pages a setup is done with:
the start pages, the guides and each setup's page.
Run by the Astro build once the pages are written (astro.config.mjs),
on the built site:
python scripts/site_markdown.py website/dist
"""
from __future__ import annotations
import argparse
import os
import re
import sys
from html.parser import HTMLParser
from pathlib import Path
sys.path.insert(0, os.path.dirname(__file__))
from common import run_cli # noqa: E402
SITE = "https://abdess.github.io"
BASE = "/retrobios/"
# Elements whose content is never words a reader needs.
SKIPPED = frozenset({"script", "style", "svg", "button", "nav", "template", "noscript", "video"})
HEADINGS = {f"h{n}": n for n in range(1, 7)}
# The pages llms-full.txt joins, by path under the site, in reading order.
FULL_PAGES = ("", "which-pack/", "wiki/what-are-bios-files/", "wiki/first-install/",
"wiki/troubleshooting/", "wiki/faq/", "wiki/installer/", "wiki/legal/",
"wiki/privacy/")
class _Converter(HTMLParser):
"""The Markdown of a page's article: its title and its content."""
def __init__(self, page_url: str) -> None:
super().__init__(convert_charrefs=True)
self.page_url = page_url
self.out: list[str] = []
self.skip = 0
self.inside = 0
self.depth_stack: list[str] = []
self.lists: list[list[int]] = []
self.pre = 0
self.links: list[str | None] = []
self.row: list[str] | None = None
self.cell: list[str] | None = None
self.table: list[list[str]] | None = None
self.header_rows = 0
self.title = ""
self._in_title = False
# A tab's name by its id, read from the tab list, said above its
# panel: a command under the wrong OS is the answer an assistant
# gets wrong.
self.tab_names: dict[str, str] = {}
self._tab: str | None = None
self._card = False
# Output
def _emit(self, text: str) -> None:
if self.cell is not None:
self.cell.append(text)
else:
self.out.append(text)
def _block(self) -> None:
if self.cell is not None:
self.cell.append(" ")
return
joined = "".join(self.out)
if joined and not joined.endswith("\n\n"):
self.out.append("\n" if joined.endswith("\n") else "\n\n")
# Parsing
def handle_starttag(self, tag: str, attrs: list[tuple[str, str | None]]) -> None:
attr = {key: value or "" for key, value in attrs}
classes = set(attr.get("class", "").split())
if tag == "h1" and attr.get("id") == "_top":
self._in_title = True
if not self.inside:
if "sl-markdown-content" in classes:
self.inside = 1
self.depth_stack = [tag]
return
if tag not in ("br", "img", "hr", "input", "meta", "link", "source", "wbr"):
self.depth_stack.append(tag)
if attr.get("role") == "tablist":
self.skip += 1
if tag == "a" or attr.get("role") == "tab":
pass
return
if self.skip and attr.get("role") == "tab" and attr.get("id"):
self._tab = attr["id"]
self.tab_names[self._tab] = ""
self.skip += 1
return
if attr.get("role") == "tabpanel" and not self.skip:
self._block()
name = self.tab_names.get(attr.get("aria-labelledby", ""), "").strip()
if name:
self._emit(f"**{' '.join(name.split())}:**")
self._block()
return
if self.skip or tag in SKIPPED or attr.get("aria-hidden") == "true" \
or classes & {"sr-only", "sl-anchor-link", "copy", "rb-anchor"}:
if tag not in ("br", "img", "hr", "input", "wbr"):
self.skip += 1
return
if self.pre:
# Inside a code block a line is a div, never a paragraph.
if tag == "div" and "ec-line" in classes and not "".join(self.out[-1:]).endswith("```\n"):
self._emit("\n")
return
if tag in HEADINGS:
self._block()
self._emit("#" * HEADINGS[tag] + " ")
elif tag in ("p", "div", "section", "figure", "details", "blockquote", "dl"):
self._block()
elif tag == "summary":
self._block()
self._emit("**")
elif tag in ("ul", "ol"):
self._block()
self.lists.append([0 if tag == "ol" else -1])
elif tag == "li":
if self.out and not "".join(self.out[-1:]).endswith("\n"):
self._emit("\n")
level = len(self.lists) - 1
marker = "-"
if self.lists and self.lists[-1][0] >= 0:
self.lists[-1][0] += 1
marker = f"{self.lists[-1][0]}."
self._emit(" " * max(level, 0) + marker + " ")
elif tag == "pre":
self._block()
self.pre += 1
self._emit("```\n")
elif tag == "code" and not self.pre:
self._emit("`")
elif tag in ("strong", "b"):
self._emit("**")
elif tag in ("em", "i"):
self._emit("*")
elif tag == "a" and "rb-card" in classes:
# A card of a grid: one list line each, its name then what it
# says, instead of one run-on line of links.
href = attr.get("href", "")
href = SITE + href if href.startswith("/") else href
self._block()
self._emit("- [")
self.links.append(href or None)
self._card = True
elif tag == "span" and self._card and self.links:
self._emit(": ")
elif tag == "a":
href = attr.get("href", "")
if href.startswith("#"):
href = self.page_url + href
elif href.startswith("/"):
href = SITE + href
self.links.append(href or None)
if href:
self._emit("[")
elif tag == "img":
alt = attr.get("alt", "").strip()
if alt:
self._emit(alt)
elif tag == "table":
self._block()
self.table, self.header_rows = [], 0
elif tag == "tr" and self.table is not None:
self.row = []
elif tag in ("td", "th") and self.row is not None:
self.cell = []
if tag == "th" and not self.row:
self.header_rows = max(self.header_rows, len(self.table or []) + 1)
elif tag == "dt":
self._block()
self._emit("**")
elif tag == "dd":
self._emit(": ")
def handle_endtag(self, tag: str) -> None:
if tag == "h1" and self._in_title:
self._in_title = False
if not self.inside:
return
if self.depth_stack:
self.depth_stack.pop()
if not self.depth_stack:
self.inside = 0
return
if self.skip:
if tag not in ("br", "img", "hr", "input", "wbr"):
self.skip -= 1
if tag == "a" and self._tab:
self._tab = None
return
if self.pre and tag != "pre":
return
if tag in HEADINGS or tag in ("p", "section", "figure", "details", "blockquote", "dl"):
self._block()
elif tag == "summary":
self._emit("**")
self._block()
elif tag in ("ul", "ol"):
if self.lists:
self.lists.pop()
self._block()
elif tag == "pre":
self.pre -= 1
self._emit("\n```")
self._block()
elif tag == "code" and not self.pre:
self._emit("`")
elif tag in ("strong", "b", "dt"):
self._emit("**")
elif tag in ("em", "i"):
self._emit("*")
elif tag == "a":
href = self.links.pop() if self.links else None
if href:
self._emit(f"]({href})")
if self._card:
self._card = False
self._emit("\n")
elif tag in ("td", "th") and self.cell is not None and self.row is not None:
self.row.append(" ".join("".join(self.cell).split()).replace("|", "\\|"))
self.cell = None
elif tag == "tr" and self.row is not None and self.table is not None:
self.table.append(self.row)
self.row = None
elif tag == "table" and self.table is not None:
rows, self.table = self.table, None
if rows:
width = max(len(r) for r in rows)
rows = [r + [""] * (width - len(r)) for r in rows]
head = rows[0] if self.header_rows else [""] * width
body = rows[1:] if self.header_rows else rows
lines = ["| " + " | ".join(head) + " |", "|" + "---|" * width]
lines += ["| " + " | ".join(r) + " |" for r in body]
self.out.append("\n".join(lines))
self._block()
elif tag == "br":
self._emit("\n" if self.pre else " \n")
def handle_startendtag(self, tag: str, attrs: list[tuple[str, str | None]]) -> None:
self.handle_starttag(tag, attrs)
if tag not in ("img", "br", "hr", "input", "wbr", "meta", "link", "source"):
self.handle_endtag(tag)
def handle_data(self, data: str) -> None:
if self._in_title and not self.inside:
self.title += data
return
if self._tab is not None:
self.tab_names[self._tab] += data
if not self.inside or self.skip:
return
if self.pre:
# The whitespace between <pre> and its first line is no line.
if data.strip() or not "".join(self.out[-1:]).endswith("```\n"):
self._emit(data)
return
text = re.sub(r"\s+", " ", data)
if text.strip() or (text and self.out and not "".join(self.out[-1:]).endswith((" ", "\n"))):
self._emit(text)
def markdown(self) -> str:
body = "".join(self.out)
body = re.sub(r"[ \t]+\n", "\n", body)
body = re.sub(r"\n{3,}", "\n\n", body).strip()
title = " ".join(self.title.split())
return (f"# {title}\n\n" if title else "") + f"Source: {self.page_url}\n\n{body}\n"
def page_markdown(html: str, page_url: str) -> str:
converter = _Converter(page_url)
converter.feed(html)
converter.close()
return converter.markdown()
def convert_site(dist: Path) -> int:
"""Write index.md beside every page's index.html, then llms-full.txt."""
written = 0
for html_path in sorted(dist.rglob("index.html")):
relative = html_path.parent.relative_to(dist).as_posix()
page = "" if relative == "." else f"{relative}/"
url = f"{SITE}{BASE}{page}"
text = page_markdown(html_path.read_text(encoding="utf-8"), url)
(html_path.parent / "index.md").write_text(text, encoding="utf-8")
written += 1
write_full(dist)
return written
def write_full(dist: Path) -> None:
"""llms-full.txt from the pages' Markdown copies."""
parts = ["# RetroBIOS: the guides in one file", "",
"> The pages a setup is done with, in reading order. Every page of the site also has "
"its own Markdown copy at `<page>/index.md`.", ""]
for page in FULL_PAGES:
md = dist / page / "index.md"
if md.is_file():
parts += [md.read_text(encoding="utf-8").rstrip(), "", "---", ""]
# Each setup's own page (the setups the picker lists, not the parts a
# long page is cut into), up to its reference of every file: what to
# do and where, not the full lists, which its own copy keeps. All of
# them was 6.9 MB, past what an assistant reads at once.
import json # noqa: PLC0415
index = dist / "data" / "picker" / "index.json"
setups = [str(item["platform"]) for item in json.loads(index.read_text(encoding="utf-8"))] \
if index.is_file() else []
for setup in [*setups, "linux-handhelds"]:
md = dist / "platforms" / setup / "index.md"
if md.is_file():
text = md.read_text(encoding="utf-8")
parts += [text.split("\n## Reference", 1)[0].rstrip(), "", "---", ""]
(dist / "llms-full.txt").write_text("\n".join(parts).rstrip() + "\n", encoding="utf-8")
def main() -> int:
parser = argparse.ArgumentParser(description=__doc__.split("\n\n")[0], allow_abbrev=False)
parser.add_argument("dist", type=Path, help="the built site (website/dist)")
args = parser.parse_args()
if not (args.dist / "index.html").is_file():
print(f"error: {args.dist} holds no built site", file=sys.stderr)
return 1
count = convert_site(args.dist)
print(f"Markdown copies: {count} pages, llms-full.txt", file=sys.stderr)
return 0
if __name__ == "__main__":
run_cli(main)