feat: build the Russian responsive web interface

scripts/compress_web_assets.py

@@ -0,0 +1,66 @@
+Import("env")
+
+import gzip
+import re
+from pathlib import Path
+
+
+ROOT = Path(env.subst("$PROJECT_DIR"))
+DATA = ROOT / "data"
+ASSETS = ("index.html", "styles.css", "app.js")
+
+
+def minify_html(source):
+    return re.sub(r">\s+<", "><", source).strip()
+
+
+def minify_css(source):
+    source = re.sub(r"/\*.*?\*/", "", source, flags=re.S)
+    return re.sub(r"\s*([{}:;,>])\s*", r"\1", source).strip()
+
+
+def minify_js(source):
+    output = []
+    quote = ""
+    escaped = False
+    pending_space = False
+    for character in source:
+        if quote:
+            output.append(character)
+            if escaped:
+                escaped = False
+            elif character == "\\":
+                escaped = True
+            elif character == quote:
+                quote = ""
+            continue
+        if character in ("'", '"', "`"):
+            if pending_space and output and (output[-1].isalnum() or output[-1] in "_$"):
+                output.append(" ")
+            pending_space = False
+            quote = character
+            output.append(character)
+        elif character.isspace():
+            pending_space = True
+        else:
+            if pending_space and output and (output[-1].isalnum() or output[-1] in "_$") and (character.isalnum() or character in "_$"):
+                output.append(" ")
+            pending_space = False
+            output.append(character)
+    return "".join(output)
+
+
+def compress_assets():
+    for asset in ASSETS:
+        path = DATA / asset
+        text = path.read_text(encoding="utf-8")
+        if asset.endswith(".html"):
+            text = minify_html(text)
+        elif asset.endswith(".css"):
+            text = minify_css(text)
+        else:
+            text = minify_js(text)
+        (DATA / f"{asset}.gz").write_bytes(gzip.compress(text.encode("utf-8"), mtime=0))
+
+
+compress_assets()