build.py

#!/usr/bin/env python3
"""Package dist/star-breaker.zip for itch.io.

The file list is DERIVED FROM index.html rather than hand-maintained. The
hand-maintained one silently drifted: the build that shipped was missing
src/rng.js, src/data/meta.js and the Armour/Craft/Spec/Core scenes, and RNG is
referenced on nearly every code path. Reading the <script> tags means the zip
cannot disagree with the page again.

Entries are written with forward slashes and index.html sits at the archive
root, which is what itch.io needs for a "played in browser" upload.
"""

import io
import os
import re
import sys
import zipfile

ROOT = os.path.dirname(os.path.abspath(__file__))
OUT = os.path.join(ROOT, "dist", "star-breaker.zip")


def collect():
    html = io.open(os.path.join(ROOT, "index.html"), encoding="utf-8").read()
    scripts = [s.split("?")[0] for s in re.findall(r'<script src="([^"]+)"', html)]
    files = ["index.html"] + scripts
    assets = os.path.join(ROOT, "assets")
    if os.path.isdir(assets):
        for base, _, names in os.walk(assets):
            for name in names:
                rel = os.path.relpath(os.path.join(base, name), ROOT)
                files.append(rel.replace(os.sep, "/"))
    return files


def main():
    files = collect()
    missing = [f for f in files if not os.path.exists(os.path.join(ROOT, f))]
    if missing:
        sys.exit("index.html references files that do not exist: %s" % missing)

    os.makedirs(os.path.dirname(OUT), exist_ok=True)
    with zipfile.ZipFile(OUT, "w", zipfile.ZIP_DEFLATED) as z:
        for f in files:
            z.write(os.path.join(ROOT, f), f)

    print("%s: %d entries, %.1f KB" % (OUT, len(files), os.path.getsize(OUT) / 1024))


if __name__ == "__main__":
    main()