Move util functions out of legacy

The util functions consist entirely of hexdump and its helper function right
now, both of which are completely unused at the moment.  I don't intend for
legacy to ever call these functions, but I should start using them soon.  :)

blocksfree/legacy.py

@@ -57,7 +57,6 @@ import uuid  # for temp directory
 import subprocess
 #import tempfile  # not used, but should be for temp directory?
 import struct
-from typing import Sequence
 from binascii import a2b_hex, b2a_hex
 
 from . import diskimg
@@ -895,48 +894,6 @@ def isnumber(number):
 
 #---- end IvanX general purpose functions ----#
 
-### UTIL
-
-def seqsplit(seq: Sequence, num: int) -> Sequence:
-	"""split Sequence into smaller Sequences of size 'num'"""
-	for i in range(0, len(seq), num):
-		yield seq[i:i + num]
-
-def hexdump(
-		buf: bytes,
-		striphigh: bool = False,
-		wordsize: int = 2,
-		sep: str = ' ',
-		sep2: str = '  '
-		) -> str:
-	"""return a multi-line debugging hexdump of a bytes object"""
-	'''Format is configurable but defaults to that of xxd:
-
-	########: #### #### #### ####  #### #### #### #### |................|
-
-	wordsize is the number of bytes between separators
-	sep is the separator between words
-	sep2 is the midline separator
-	striphigh considers 0xa0-0xfe to be printable ASCII (as on Apple II)
-	'''
-	out = []
-	hlen = 32 + len(sep2) + (16//wordsize-2) * len(sep)
-	wordlen = wordsize * 2
-	for i, vals in enumerate(seqsplit(buf, 16)):
-		hexs = sep2.join([
-			sep.join(seqsplit(b2a_hex(x).decode(), wordlen))
-			for x in seqsplit(vals,8)
-			])
-		if striphigh:
-			vals = [x & 0x7f for x in vals]
-		chars = ''.join([
-			chr(x) if x >= 0x20 and x < 0x7f else '.'
-			for x in vals
-			])
-		out.append('{i:07x}0: {hexs:{hlen}} |{chars}|'.format(**locals()))
-	return '\n'.join(out)
-
-
 def run_cppo():
 	try:
 		disk = diskimg.Disk(g.image_file)

blocksfree/util.py

@@ -0,0 +1,58 @@
+# vim: set tabstop=4 shiftwidth=4 noexpandtab filetype=python:
+
+# Copyright (C) 2017  T. Joseph Carter
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+# for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+from typing import Sequence
+
+def seqsplit(seq: Sequence, num: int) -> Sequence:
+	"""split Sequence into smaller Sequences of size 'num'"""
+	for i in range(0, len(seq), num):
+		yield seq[i:i + num]
+
+def hexdump(
+		buf: bytes,
+		striphigh: bool = False,
+		wordsize: int = 2,
+		sep: str = ' ',
+		sep2: str = '  '
+		) -> str:
+	"""return a multi-line debugging hexdump of a bytes object"""
+	'''Format is configurable but defaults to that of xxd:
+
+	########: #### #### #### ####  #### #### #### #### |................|
+
+	wordsize is the number of bytes between separators
+	sep is the separator between words
+	sep2 is the midline separator
+	striphigh considers 0xa0-0xfe to be printable ASCII (as on Apple II)
+	'''
+	out = []
+	hlen = 32 + len(sep2) + (16//wordsize-2) * len(sep)
+	wordlen = wordsize * 2
+	for i, vals in enumerate(seqsplit(buf, 16)):
+		hexs = sep2.join([
+			sep.join(seqsplit(b2a_hex(x).decode(), wordlen))
+			for x in seqsplit(vals,8)
+			])
+		if striphigh:
+			vals = [x & 0x7f for x in vals]
+		chars = ''.join([
+			chr(x) if x >= 0x20 and x < 0x7f else '.'
+			for x in vals
+			])
+		out.append('{i:07x}0: {hexs:{hlen}} |{chars}|'.format(**locals()))
+	return '\n'.join(out)