video

tools/build_mountain_js.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+"""
+Build static/js/mountain.js with all ASCII frames from a build/<name>/ dir
+embedded as a JS array.
+
+Usage: build_mountain_js.py <src_dir> <dst_js_path>
+
+Frames are read in sorted order, escaped for JS template literals, and
+concatenated into a window.TP_MOUNTAIN_FRAMES array.
+"""
+import os
+import sys
+
+
+def js_escape(s: str) -> str:
+    return s.replace("\\", "\\\\").replace("`", "\\`").replace("${", "\\${")
+
+
+def main() -> int:
+    if len(sys.argv) != 3:
+        print(__doc__, file=sys.stderr)
+        return 2
+
+    src = sys.argv[1]
+    dst = sys.argv[2]
+
+    txts = sorted(p for p in os.listdir(src) if p.startswith("frame-") and p.endswith(".txt"))
+    if not txts:
+        print(f"no frame-*.txt files in {src}", file=sys.stderr)
+        return 1
+
+    frames = []
+    for name in txts:
+        with open(os.path.join(src, name)) as f:
+            frames.append(f.read().rstrip("\n"))
+
+    header = """/* Autogenerated by tools/build_mountain_js.py
+   ASCII frames from a video, chafa-rendered, concatenated into a JS array.
+   Cycled at 12 fps by static/js/mountain-bg.js. */
+
+window.TP_MOUNTAIN_FRAMES = [
+"""
+    footer = f"""];
+
+window.TP_MOUNTAIN_N_FRAMES = {len(frames)};
+window.TP_MOUNTAIN_FPS = 12;
+"""
+    body = ",\n".join(f"  `{js_escape(fr)}`" for fr in frames)
+
+    os.makedirs(os.path.dirname(dst), exist_ok=True)
+    with open(dst, "w") as f:
+        f.write(header)
+        f.write(body)
+        f.write("\n")
+        f.write(footer)
+
+    print(f"  {os.path.getsize(dst):>7d} bytes  {dst}  ({len(frames)} frames)")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())