Terminal 1.0: a-Shell 2.3.2 full + worse_query + native plugin environment

env/ardeb

@@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+"""Minimal ar archive packer/extractor for .deb files on a-Shell.
+
+Usage:
+  ardeb pack <out.ar> <file> [file ...]
+  ardeb extract <in.ar> <dest-dir>
+"""
+
+import os
+import sys
+
+
+def pack(out_path, files):
+    with open(out_path, "wb") as out:
+        out.write(b"!<arch>\n")
+        for path in files:
+            data = open(path, "rb").read()
+            name = os.path.basename(path)
+            if len(name) > 15:
+                raise SystemExit("ardeb: member name too long: " + name)
+            header = (
+                name.ljust(16)
+                + "0".ljust(12)
+                + "0".ljust(6)
+                + "0".ljust(6)
+                + "100644".ljust(8)
+                + str(len(data)).ljust(10)
+                + "`\n"
+            ).encode("ascii")
+            out.write(header)
+            out.write(data)
+            if len(data) & 1:
+                out.write(b"\n")
+
+
+def extract(archive, dest):
+    data = open(archive, "rb").read()
+    if not data.startswith(b"!<arch>\n"):
+        raise SystemExit("ardeb: not an ar archive")
+    os.makedirs(dest, exist_ok=True)
+    pos = 8
+    while pos + 60 <= len(data):
+        header = data[pos:pos + 60]
+        pos += 60
+        name = header[:16].decode("ascii", "ignore").strip().rstrip("/")
+        if not name:
+            continue
+        try:
+            size = int(header[48:58].decode("ascii", "ignore").strip() or "0")
+        except ValueError:
+            size = 0
+        body = data[pos:pos + size]
+        pos += size + (size & 1)
+        if name in (".", ".."):
+            continue
+        open(os.path.join(dest, name), "wb").write(body)
+
+
+def main():
+    if len(sys.argv) < 4:
+        raise SystemExit(__doc__)
+    if sys.argv[1] == "pack":
+        pack(sys.argv[2], sys.argv[3:])
+    elif sys.argv[1] == "extract":
+        extract(sys.argv[2], sys.argv[3])
+    else:
+        raise SystemExit(__doc__)
+
+
+if __name__ == "__main__":
+    main()