Mercurial > hgrepos > Python > apps > py-cutils

annotate cutils/util/__init__.py @ 188:2784fdcc99e5

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implement basic parsing of treesum output. Including CRC32 checks.
author Franz Glasner <fzglas.hg@dom66.de>
date Wed, 15 Jan 2025 14:41:36 +0100
parents f04d4b1c14b3
children 0f4febf646f5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
115
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
1 # -*- coding: utf-8 -*-
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
2 # :-
124
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
3 # :Copyright: (c) 2020-2025 Franz Glasner
115
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
4 # :License: BSD-3-Clause
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
5 # :-
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
6 r"""Utility package.
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
7
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
8 """
e15b3d1ff0d9 New subpackage with a "contextlib.nullcontext" for older Python versions
Franz Glasner <fzglas.hg@dom66.de>
parents:
diff changeset
9
164
a813094ae4f5 Move PY2 from cutils.util.constants into cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
10 __all__ = ["PY2",
173
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
11 "PY35",
188
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
12 "n", "b", "u",
164
a813094ae4f5 Move PY2 from cutils.util.constants into cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
13 "normalize_filename",
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
14 "argv2algo",
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
15 "algotag2algotype",
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
16 "get_blake2b",
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
17 "get_blake2b_256",
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
18 "get_blake2s",
172
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
19 "default_algotag",
163
fa7dd54e9715 FIX: Add "fsencode" to public functions in cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 124
diff changeset
20 "fsencode",
188
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
21 "interpolate_bytes",
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
22 ]
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
23
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
24
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
25 import argparse
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
26 import hashlib
124
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
27 import os
164
a813094ae4f5 Move PY2 from cutils.util.constants into cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
28 import sys
a813094ae4f5 Move PY2 from cutils.util.constants into cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
29
a813094ae4f5 Move PY2 from cutils.util.constants into cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
30
a813094ae4f5 Move PY2 from cutils.util.constants into cutils.util
Franz Glasner <fzglas.hg@dom66.de>
parents: 163
diff changeset
31 PY2 = sys.version_info[0] < 3
173
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
32 PY35 = sys.version_info[:2] >= (3, 5)
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
33
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
34
188
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
35 if PY2:
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
36
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
37 def n(s, encoding="ascii"):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
38 """Convert `s` to the native string implementation"""
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
39 if isinstance(s, unicode): # noqa: F821 undefined name 'unicode'
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
40 return s.encode(encoding)
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
41 return s
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
42
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
43 def b(s, encoding="ascii"):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
44 """Convert `s` to bytes"""
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
45 if isinstance(s, unicode): # noqa: F821 undefined name 'unicode'
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
46 return s.encode(encoding)
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
47 return s
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
48
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
49 def u(s, encoding="ascii"):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
50 """Convert `s` to a unicode string"""
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
51 if isinstance(s, str):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
52 return s.decode(encoding)
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
53 return s
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
54
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
55 else:
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
56
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
57 def n(s, encoding="ascii"):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
58 """Convert `s` to the native string implementation"""
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
59 if isinstance(s, (bytes, bytearray)):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
60 return s.decode(encoding)
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
61 return s
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
62
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
63 def b(s, encoding="ascii"):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
64 """Convert `s` to bytes"""
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
65 if isinstance(s, str):
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
66 return s.encode(encoding)
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
67 return s
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
68
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
69 u = n
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
70
2784fdcc99e5 Implement basic parsing of treesum output.
Franz Glasner <fzglas.hg@dom66.de>
parents: 185
diff changeset
71
172
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
72 def default_algotag():
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
73 """Determine the "best" default algorithm.
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
74
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
75 Depend on availability in :mod:`hashlib`.
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
76
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
77 Prefer BLAKE2b-256, SHA256 or SHA1 -- in this order.
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
78
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
79 Does not consider :mod:`pyblake2` if it is available eventually.
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
80
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
81 """
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
82 if "blake2b" in hashlib.algorithms_available:
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
83 return "BLAKE2b-256"
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
84 if "sha256" in hashlib.algorithms_available:
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
85 return "SHA256"
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
86 return "SHA1"
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
87
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
88
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
89 def get_blake2b():
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
90 """Get the factory for blake2b"""
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
91 try:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
92 return hashlib.blake2b
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
93 except AttributeError:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
94 import pyblake2
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
95 return pyblake2.blake2b
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
96
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
97
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
98 def get_blake2b_256():
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
99 """Get the factory for blake2b-256"""
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
100
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
101 try:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
102 hashlib.blake2b
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
103 except AttributeError:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
104 import pyblake2
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
105
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
106 def _get_blake():
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
107 return pyblake2.blake2b(digest_size=32)
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
108
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
109 else:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
110
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
111 def _get_blake():
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
112 return hashlib.blake2b(digest_size=32)
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
113
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
114 return _get_blake
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
115
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
116
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
117 def get_blake2s():
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
118 """Get the factory for blake2s"""
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
119 try:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
120 return hashlib.blake2s
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
121 except AttributeError:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
122 import pyblake2
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
123 return pyblake2.blake2s
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
124
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
125
184
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
126 def get_crc(name):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
127 """Get the factory for a CRC"""
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
128
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
129 from ..crcmod.predefined import PredefinedCrc
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
130
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
131 def _crc_type():
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
132 return PredefinedCrc(name)
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
133
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
134 return _crc_type
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
135
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
136
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
137 def argv2algo(s):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
138 """Convert a command line algorithm specifier into a tuple with the
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
139 type/factory of the digest and the algorithms tag for output purposes.
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
140
172
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
141 :param str s: the specifier from the command line; should include all
804a823c63f5 Now the selection of the default algorithm depends on availiability in hashlib
Franz Glasner <fzglas.hg@dom66.de>
parents: 166
diff changeset
142 algorithm tags also (for proper round-tripping)
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
143 :return: the internal digest specification
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
144 :rtype: a tuple (digest_type_or_factory, name_in_output)
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
145 :raises argparse.ArgumentTypeError: for unrecognized algorithms or names
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
146
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
147 String comparisons are done case-insensitively.
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
148
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
149 """
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
150 s = s.lower()
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
151 if s in ("1", "sha1"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
152 return (hashlib.sha1, "SHA1")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
153 elif s in ("224", "sha224"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
154 return (hashlib.sha224, "SHA224")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
155 elif s in ("256", "sha256"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
156 return (hashlib.sha256, "SHA256")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
157 elif s in ("384", "sha384"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
158 return (hashlib.sha384, "SHA384")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
159 elif s in ("512", "sha512"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
160 return (hashlib.sha512, "SHA512")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
161 elif s in ("3-224", "sha3-224"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
162 return (hashlib.sha3_224, "SHA3-224")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
163 elif s in ("3-256", "sha3-256"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
164 return (hashlib.sha3_256, "SHA3-256")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
165 elif s in ("3-384", "sha3-384"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
166 return (hashlib.sha3_384, "SHA3-384")
120
a548783381b6 More accurate description of --algorithm.
Franz Glasner <fzglas.hg@dom66.de>
parents: 118
diff changeset
167 elif s in ("3", "3-512", "sha3-512"):
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
168 return (hashlib.sha3_512, "SHA3-512")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
169 elif s in ("blake2b", "blake2b-512", "blake2", "blake2-512"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
170 return (get_blake2b(), "BLAKE2b")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
171 elif s in ("blake2s", "blake2s-256"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
172 return (get_blake2s(), "BLAKE2s")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
173 elif s in ("blake2-256", "blake2b-256"):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
174 return (get_blake2b_256(), "BLAKE2b-256")
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
175 elif s == "md5":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
176 return (hashlib.md5, "MD5")
184
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
177 elif s in ("crc24", "crc-24",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
178 "crc24-openpgp", "crc-24-openpgp"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
179 return (get_crc("crc-24"), "CRC-24")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
180 elif s in ("crc32", "crc-32",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
181 "crc32-pkzip", "crc-32-pkzip",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
182 "crc32-iso", "crc-32-iso",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
183 "crc32-iso-hdlc", "crc-32-iso-hdlc"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
184 return (get_crc("crc-32"), "CRC-32-ISO")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
185 elif s in ("crc32-posix", "crc-32-posix",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
186 "crc32-cksum", "crc-32-cksum",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
187 "posix"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
188 return (get_crc("posix"), "CRC-32-POSIX")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
189 elif s in ("crc64", "crc-64",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
190 "crc64-iso", "crc-64-iso"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
191 return (get_crc("crc-64"), "CRC-64-ISO")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
192 elif s in ("crc64-2", "crc-64-2",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
193 "crc64-iso-2", "crc-64-iso-2",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
194 "crc64-mcrc64", "crc-64-mcrc64"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
195 return (get_crc("crc-64-2"), "CRC-64-ISO-2")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
196 elif s in ("crc64-ecma", "crc-64-ecma"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
197 return (get_crc("crc-64-ecma"), "CRC-64-ECMA")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
198 elif s in ("crc64-xz", "crc-64-xz",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
199 "crc64-go-ecma", "crc-64-go-ecma"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
200 return (get_crc("crc-64-xz"), "CRC-64-XZ")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
201 elif s in ("crc64-go", "crc-64-go",
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
202 "crc64-go-iso", "crc-64-go-iso"):
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
203 return (get_crc("crc-64-go"), "CRC-64-GO-ISO")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
204 elif s in ("crc64-redis", "crc-64-redis"):
185
f04d4b1c14b3 FIX: "digest" had overwritteh the digest module
Franz Glasner <fzglas.hg@dom66.de>
parents: 184
diff changeset
205 return (get_crc("crc-64-redis"), "CRC-64-REDIS")
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
206 else:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
207 raise argparse.ArgumentTypeError(
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
208 "`{}' is not a recognized algorithm".format(s))
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
209
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
210
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
211 def algotag2algotype(s):
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
212 """Convert the algorithm specifier in a BSD-style digest file to the
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
213 type/factory of the corresponding algorithm.
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
214
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
215 :param str s: the tag (i.e. normalized name) or the algorithm
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
216 :return: the digest type or factory for `s`
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
217 :raises ValueError: on unknown and/or unhandled algorithms
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
218
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
219 All string comparisons are case-sensitive.
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
220
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
221 """
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
222 if s == "SHA1":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
223 return hashlib.sha1
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
224 elif s == "SHA224":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
225 return hashlib.sha224
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
226 elif s == "SHA256":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
227 return hashlib.sha256
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
228 elif s == "SHA384":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
229 return hashlib.sha384
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
230 elif s == "SHA512":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
231 return hashlib.sha512
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
232 elif s == "SHA3-224":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
233 return hashlib.sha3_224
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
234 elif s == "SHA3-256":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
235 return hashlib.sha3_256
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
236 elif s == "SHA3-384":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
237 return hashlib.sha3_384
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
238 elif s == "SHA3-512":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
239 return hashlib.sha3_512
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
240 elif s in ("BLAKE2b", "BLAKE2b-512", "BLAKE2b512"): # compat for openssl
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
241 return get_blake2b()
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
242 elif s in ("BLAKE2s", "BLAKE2s-256", "BLAKE2s256"): # compat for openssl
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
243 return get_blake2s()
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
244 elif s in ("BLAKE2b-256", "BLAKE2b256"): # also compat for openssl dgst
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
245 return get_blake2b_256()
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
246 elif s == "MD5":
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
247 return hashlib.md5
184
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
248 elif s == "CRC-24":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
249 return get_crc("crc-24")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
250 elif s == "CRC-32-ISO":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
251 return get_crc("crc-32")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
252 elif s == "CRC-32-POSIX":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
253 return get_crc("posix")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
254 elif s == "CRC-64-ISO":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
255 return get_crc("crc-64")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
256 elif s == "CRC-64-ISO-2":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
257 return get_crc("crc-64-2")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
258 elif s == "CRC-64-ECMA":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
259 return get_crc("crc-64-ecma")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
260 elif s == "CRC-64-XZ":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
261 return get_crc("crc-64-xz")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
262 elif s == "CRC-64-GO-ISO":
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
263 return get_crc("crc-64-go")
6154b8e4ba94 Include some new algorithms: CRC
Franz Glasner <fzglas.hg@dom66.de>
parents: 173
diff changeset
264 elif s == "CRC-64-REDIS":
185
f04d4b1c14b3 FIX: "digest" had overwritteh the digest module
Franz Glasner <fzglas.hg@dom66.de>
parents: 184
diff changeset
265 return get_crc("crc-64-redis")
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
266 else:
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
267 raise ValueError("unknown algorithm: {}".format(s))
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
268
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
269
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
270 def normalize_filename(filename, strip_leading_dot_slash=False):
124
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
271 if isinstance(filename, bytes):
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
272 filename = filename.replace(b"\\", b"/")
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
273 if strip_leading_dot_slash:
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
274 while filename.startswith(b"./"):
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
275 filename = filename[2:]
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
276 else:
166
ed45abb4940f FIX: in util.normalize_filename(): use the 'u"' prefix in the else part for non-byte strings
Franz Glasner <fzglas.hg@dom66.de>
parents: 164
diff changeset
277 filename = filename.replace(u"\\", u"/")
124
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
278 if strip_leading_dot_slash:
166
ed45abb4940f FIX: in util.normalize_filename(): use the 'u"' prefix in the else part for non-byte strings
Franz Glasner <fzglas.hg@dom66.de>
parents: 164
diff changeset
279 while filename.startswith(u"./"):
124
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
280 filename = filename[2:]
118
12339ac2148d Move some functions into cutils.util (i.e. algorithms and their aliases)
Franz Glasner <fzglas.hg@dom66.de>
parents: 115
diff changeset
281 return filename
124
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
282
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
283
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
284 def fsencode(what):
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
285 """A somewhat compatibility function for :func:`os.fsencode`.
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
286
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
287 If `what` is of type :class:`bytes` no :func:`os.fsencode` is required.
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
288
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
289 """
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
290 if isinstance(what, bytes):
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
291 return what
3bd3f32b5e60 A first version of "treesum" is working
Franz Glasner <fzglas.hg@dom66.de>
parents: 120
diff changeset
292 return os.fsencode(what)
173
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
293
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
294
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
295 def interpolate_bytes(formatstr, *values):
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
296 """Interpolate byte strings also on Python 3.4.
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
297
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
298 :param bytes formatstr:
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
299 :param values: params for interpolation: may *not* contain Unicode strings
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
300 :rvalue: the formatted octet
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
301 :rtype: bytes
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
302
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
303 """
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
304 assert isinstance(formatstr, bytes)
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
305 # Python 3.5+ or Python2 know how to interpolate byte strings
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
306 if PY35 or PY2:
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
307 return formatstr % values
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
308 # Workaround with a Latin-1 dance
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
309 tformatstr = formatstr.decode("latin1")
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
310 tvalues = []
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
311 for v in values:
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
312 if PY2:
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
313 if isinstance(v, unicode): # noqa: F821 undefined name 'unicode'
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
314 assert False
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
315 else:
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
316 if isinstance(v, str):
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
317 assert False
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
318 if isinstance(v, bytes):
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
319 tvalues.append(v.decode("latin1"))
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
320 else:
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
321 tvalues.append(v)
e081b6ee5570 treesum.py now runs on Python3.4 also: use a workaround for its missing byte % formatting.
Franz Glasner <fzglas.hg@dom66.de>
parents: 172
diff changeset
322 return (tformatstr % tuple(tvalues)).encode("latin1")