Add .items() to Config

dtk/__init__.py

@@ -4,3 +4,4 @@
 from . import argv
 from . import aux
 from . import cfg
+from . import dt

dtk/argv.py

@@ -131,7 +131,8 @@ class Invocation:
 			else:
 				raise BadKeywordArg(arg)
 	
-	def execute(self):
+	def execute(self, context=None):
+		self.action.context = context
 		self.action(self.cmd, **self.args)
 	
 	def help(self, stream=sys.stdout):

dtk/aux.py

@@ -1,6 +1,8 @@
 #! /usr/bin/env python3
 # encoding: utf-8
 
+# ----------------------------------------------------------------
+
 def flatten_dict(root, glue=" ", prefix=[]):
 	lines = []
 	
@@ -13,3 +15,65 @@ def flatten_dict(root, glue=" ", prefix=[]):
 			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)
+
+# ----------------------------------------------------------------

dtk/cfg.py

@@ -30,6 +30,9 @@ class Config:
 	def values(self):
 		return self.raw.values()
 	
+	def items(self):
+		return self.raw.items()
+	
 	def __getitem__(self, name):
 		return self.raw[name]
 	

dtk/dt.py

@@ -0,0 +1,16 @@
+#! /usr/bin/env python3
+# encoding: utf-8
+
+# ----------------------------------------------------------------
+
+import datetime
+import pytz
+
+def now(tz_name="UTC"):
+	t = datetime.datetime.now()
+	tz = pytz.timezone(tz_name)
+	
+	return tz.localize(t)
+
+# ----------------------------------------------------------------
+