RAHHH

backend/lib/python3.12/site-packages/twisted/conch/ssh/sexpy.py

@@ -0,0 +1,40 @@
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+
+def parse(s):
+    s = s.strip()
+    expr = []
+    while s:
+        if s[0:1] == b"(":
+            newSexp = []
+            if expr:
+                expr[-1].append(newSexp)
+            expr.append(newSexp)
+            s = s[1:]
+            continue
+        if s[0:1] == b")":
+            aList = expr.pop()
+            s = s[1:]
+            if not expr:
+                assert not s
+                return aList
+            continue
+        i = 0
+        while s[i : i + 1].isdigit():
+            i += 1
+        assert i
+        length = int(s[:i])
+        data = s[i + 1 : i + 1 + length]
+        expr[-1].append(data)
+        s = s[i + 1 + length :]
+    assert False, "this should not happen"
+
+
+def pack(sexp):
+    return b"".join(
+        b"(%b)" % (pack(o),)
+        if type(o) in (type(()), type([]))
+        else b"%d:%b" % (len(o), o)
+        for o in sexp
+    )