starter

in.txt

@@ -0,0 +1 @@
+S'%4}).$%8

index.py

@@ -0,0 +1,43 @@
+from sys import argv
+
+OFFSET = 33
+SPC = " "
+NL = "\n"
+ALPHA = list("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!"
+             "\"#$%&'()*+,-./:;<=>?@[\]^_`|~") + [SPC, NL]
+
+
+def read_file(fn):
+    with open(fn) as fp:
+        return fp.read()
+
+
+def parse(s):
+    print(indicator(s))
+    return s
+
+
+def decode_str(s):
+    chars = [c for c in list(s)]
+    return "".join([ALPHA[(ord(c) - OFFSET)] for c in chars])
+
+
+def encode_str(s):
+    chars = [c for c in list(s)]
+    return "".join([chr(ALPHA.index(c) + OFFSET) for c in chars])
+
+
+def indicator(s):
+    fst = s[0]
+    if fst == 'T': return "true"
+    if fst == 'F': return "false"
+    if fst == 'I': return "int"
+    if fst == 'S': return decode_str(s[1:])
+    if fst == 'U': return 'unary'
+    if fst == 'B': return 'binary'
+    if fst == '?': return 'if'
+    if fst == 'L': return 'lambda abs'
+
+
+if __name__ == '__main__':
+    print(parse(read_file(argv[1])))