rename dtk -> dcd

dcd/aux.py

@@ -0,0 +1,79 @@
+#! /usr/bin/env python3
+# encoding: utf-8
+
+# ----------------------------------------------------------------
+
+def flatten_dict(root, glue=" ", prefix=[]):
+	lines = []
+	
+	for k, v in root.items():
+		new_prefix = prefix + [k]
+		
+		if type(v) == dict:
+			lines.extend(flatten_dict(v, glue, new_prefix))
+		else:
+			lines.append((glue.join(new_prefix), v))
+	
+	return lines
+
+# ----------------------------------------------------------------
+
+import random
+
+PASSPHRASE_VOWELS = "aeiuAEU"
+PASSPHRASE_CONSONANTS = "bcdfghjkmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ23456789"
+
+def random_bytes(length):
+	return open("/dev/urandom", "rb").read(length)
+
+def random_syllable():
+	return random.choice(PASSPHRASE_CONSONANTS) + random.choice(PASSPHRASE_VOWELS) + random.choice(PASSPHRASE_CONSONANTS)
+
+def random_word(syllables=3):
+	parts = []
+	
+	for _ in range(syllables):
+		parts.append(random_syllable())
+	
+	return "".join(parts)
+
+# ----------------------------------------------------------------
+
+import hashlib
+
+def hash_password(p, hexdigest=True):
+	h = hashlib.blake2b()
+	
+	h.update(p.encode("utf-8"))
+	
+	return h.hexdigest() if hexdigest else h.digest()
+
+# ----------------------------------------------------------------
+
+def raw_to_hex(raw, separator=" "):
+	"""
+	Converts a bytearray (or bytes) into its textual hexadecimal representation.
+	"""
+	
+	output = []
+	
+	for o in raw:
+		output.append(hex(o)[2:].zfill(2))
+	
+	return separator.join(output)
+
+def hex_to_raw(text, separator=" "):
+	"""
+	Converts a hexadecimal representation of a byte array into a bytearray.
+	"""
+	
+	output = []
+	
+	text = text.replace(separator, "")
+	
+	for i in range(len(text)//2):
+		output.append(int(text[2*i:2*i+2], 16))
+	
+	return bytearray(output)
+
+# ----------------------------------------------------------------