initial commit

builders/builder improved/obfuscation.py

@@ -0,0 +1,42 @@
+import random
+try:
+    from .rand import rand_var, rand_case, rand_words, rand_label
+except ImportError:
+    from rand import rand_var, rand_case, rand_words, rand_label
+
+def make_junk_var():
+    return f'%{rand_var()}%'
+
+def make_set_cmd(var_name, value, obfuscate=True):
+    set_cmd = rand_case('set')
+    if obfuscate:
+        fmt = f'{set_cmd} "{var_name}={value}"'
+        prefix = make_junk_var() if random.random() > 0.5 else ''
+        return f'{prefix}{fmt}'
+    return f'{set_cmd} "{var_name}={value}"'
+
+def make_goto_cmd(label):
+    goto = rand_case('goto')
+    g = goto[0] + make_junk_var() + goto[1] + make_junk_var() + goto[2:]
+    return f'{g} :{label}'
+
+def make_rem_line():
+    rem = rand_case('rem')
+    style = random.choice(['rem', '::', 'rem_junk'])
+    if style == 'rem':
+        r = rem[0] + make_junk_var() + rem[1:]
+        return f'{r} {make_junk_var()} {rand_words()}'
+    elif style == '::':
+        return f'{make_junk_var()}:: {make_junk_var()} {rand_words()}'
+    else:
+        r = rand_case('rem')
+        return f'%{rand_var()}%{r} %{rand_var()}% {rand_words()}'
+
+def make_junk_block():
+    lines = []
+    next_label = rand_label()
+    lines.append(make_goto_cmd(next_label))
+    for _ in range(random.randint(1, 3)):
+        lines.append(make_rem_line())
+    lines.append(f':{next_label}')
+    return lines