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N0zoM1z0
b8851cb977
Prefer rea.tools in page canonicals and search listings. Generate the sitemap from current HTML indexing directives and render a shared PNG preview from SVG before verification and manual deployment. Refs #1283
114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
"""Prepare downloads, the sitemap and the sharing image for the static website."""
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from html.parser import HTMLParser
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from io import BytesIO
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from pathlib import Path
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import re
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import sys
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from urllib.parse import quote
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import xml.etree.ElementTree as ET
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from zipfile import ZIP_DEFLATED, ZipFile, ZipInfo
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SITE_ORIGIN = "https://rea.tools"
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EXAMPLE_FILES = (
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"package.json",
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"main.js",
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"preload.js",
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"renderer.js",
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"csv.js",
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"index.html",
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)
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class IndexPolicy(HTMLParser):
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"""Read indexing directives from the authored HTML head."""
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def __init__(self):
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super().__init__()
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self.in_head = False
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self.noindex = False
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def handle_starttag(self, tag, attrs):
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if tag == "head":
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self.in_head = True
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if tag == "meta" and self.in_head:
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attributes = dict(attrs)
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if (attributes.get("name") or "").lower() in ("robots", "googlebot"):
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directives = re.split(
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r"[\s,]+", (attributes.get("content") or "").lower()
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)
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self.noindex |= bool(set(directives) & {"noindex", "none"})
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def handle_endtag(self, tag):
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if tag == "head":
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self.in_head = False
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def prepare_sitemap(site):
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"""Discover HTML routes automatically, excluding pages marked noindex."""
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namespace = "http://www.sitemaps.org/schemas/sitemap/0.9"
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ET.register_namespace("", namespace)
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sitemap = ET.Element(f"{{{namespace}}}urlset")
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for path in sorted(site.rglob("*.html")):
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policy = IndexPolicy()
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policy.feed(path.read_text(encoding="utf-8"))
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if policy.noindex:
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continue
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route = path.relative_to(site).as_posix()
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if path.name == "index.html":
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route = route.removesuffix("index.html")
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entry = ET.SubElement(sitemap, f"{{{namespace}}}url")
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ET.SubElement(
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entry, f"{{{namespace}}}loc"
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).text = f"{SITE_ORIGIN}/{quote(route, safe='/')}"
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ET.indent(sitemap, space=" ")
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ET.ElementTree(sitemap).write(
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site / "sitemap.xml", encoding="utf-8", xml_declaration=True
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)
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print(f"Prepared sitemap.xml ({len(sitemap)} indexable pages).")
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def prepare_sharing_image(site):
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"""Rasterize the maintained SVG for clients that need a PNG preview."""
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try:
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import cairosvg
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except (ImportError, OSError) as error:
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sys.exit(
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f"Cannot prepare sharing image: {error}. Install website/requirements.txt and native Cairo; see website/README.md."
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)
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source = site / "assets/social-card.svg"
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destination = site / "assets/social-card.png"
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cairosvg.svg2png(
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url=str(source), write_to=str(destination), output_width=1200, output_height=630
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)
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print("Prepared assets/social-card.png (1200 × 630).")
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def prepare_notes_example(site):
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"""Create a ZIP with public source only and reproducible metadata."""
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source = site / "examples/notes-electron"
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contents = BytesIO()
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with ZipFile(contents, "w") as archive:
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for name in EXAMPLE_FILES:
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entry = ZipInfo(f"notes-example/{name}", (1980, 1, 1, 0, 0, 0))
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entry.create_system = 3
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entry.external_attr = 0o100644 << 16
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archive.writestr(
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entry,
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(source / name).read_bytes(),
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compress_type=ZIP_DEFLATED,
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compresslevel=9,
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)
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destination = site / "examples/notes-example.zip"
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destination.write_bytes(contents.getvalue())
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print(f"Prepared examples/notes-example.zip ({len(EXAMPLE_FILES)} files).")
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if __name__ == "__main__":
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root = Path(__file__).resolve().parent.parent
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site = root / "website/public"
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prepare_sharing_image(site)
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prepare_sitemap(site)
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prepare_notes_example(site)
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