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Alain Takoudjou
slapos
Commits
ec468f81
Commit
ec468f81
authored
Oct 24, 2011
by
Antoine Catton
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Add homemade filehash library in librecipe
parent
94a11c06
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2
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slapos/recipe/librecipe/__init__.py
slapos/recipe/librecipe/__init__.py
+1
-0
slapos/recipe/librecipe/filehash.py
slapos/recipe/librecipe/filehash.py
+96
-0
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slapos/recipe/librecipe/__init__.py
View file @
ec468f81
...
@@ -39,6 +39,7 @@ import urlparse
...
@@ -39,6 +39,7 @@ import urlparse
# Use to do from slapos.recipe.librecipe import GenericBaseRecipe
# Use to do from slapos.recipe.librecipe import GenericBaseRecipe
from
generic
import
GenericBaseRecipe
from
generic
import
GenericBaseRecipe
from
genericslap
import
GenericSlapRecipe
from
genericslap
import
GenericSlapRecipe
from
filehash
import
filehash
class
BaseSlapRecipe
:
class
BaseSlapRecipe
:
"""Base class for all slap.recipe.*"""
"""Base class for all slap.recipe.*"""
...
...
slapos/recipe/librecipe/filehash.py
0 → 100644
View file @
ec468f81
##############################################################################
#
# Copyright (c) 2010 Vifib SARL and Contributors. All Rights Reserved.
#
# WARNING: This program as such is intended to be used by professional
# programmers who take the whole responsibility of assessing all potential
# consequences resulting from its eventual inadequacies and bugs
# End users who are looking for a ready-to-use solution with commercial
# guarantees and support are strongly adviced to contract a Free Software
# Service Company
#
# 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 3
# 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.
#
##############################################################################
import
hashlib
import
shutil
import
os
DEFAULT_HASH
=
'sha512'
class
Hash
(
object
):
def
__init__
(
self
,
name
):
self
.
_hash
=
hashlib
.
new
(
name
)
def
write
(
self
,
data
):
self
.
_hash
.
update
(
data
)
def
read
(
self
):
return
self
.
_hash
.
hexdigest
()
def
filehash
(
filename
,
type_
=
DEFAULT_HASH
):
if
not
os
.
path
.
isfile
(
filename
):
raise
ValueError
(
"%r isn't a file"
%
filename
)
digest
=
Hash
(
type_
)
with
open
(
filename
,
'r'
)
as
file_
:
shutil
.
copyfileobj
(
file_
,
digest
)
return
digest
.
read
()
# Home made hashdeep <http://md5deep.sourceforge.net/>
def
dirhash
(
dirname
,
type_
=
DEFAULT_HASH
):
"""Walk into a directory an return a unique hash for
the directory structure and its files content."""
if
not
os
.
path
.
isdir
(
dirname
):
raise
ValueError
(
"%r isn't a directory"
%
dirname
)
digest
=
Hash
(
type_
)
# List the directory structure
path_list
=
[]
for
dirname
,
dirlist
,
filelist
in
os
.
walk
(
dirname
,
followlinks
=
False
):
for
filename
in
filelist
:
path_list
.
append
(
os
.
path
.
join
(
dirname
,
filename
))
path_list
.
sort
()
for
path
in
path_list
:
# Change the hash even if the file or the directory is empty
digest
.
write
(
path
)
# Update the hash with file content
if
os
.
path
.
isfile
(
path
):
with
open
(
path
,
'r'
)
as
file_
:
shutil
.
copyfileobj
(
file_
,
digest
)
return
digest
.
read
()
def
pathhash
(
path
,
type_
=
DEFAULT_HASH
):
if
os
.
path
.
isdir
(
path
):
return
dirhash
(
path
,
type_
)
elif
os
.
path
.
isfile
(
path
):
return
filehash
(
path
,
type_
)
raise
ValueError
(
"%r isn't a directory nor a file"
%
path
)
# you can use python -m slapos.recipe.librecipe.filehash [hash] path
if
__name__
==
'__main__'
:
import
sys
if
len
(
sys
.
argv
)
==
1
:
raise
ValueError
(
"Not enough command line arguments"
)
if
len
(
sys
.
argv
)
==
2
:
print
sys
.
argv
[
1
],
'-'
,
pathhash
(
sys
.
argv
[
1
])
else
:
print
sys
.
argv
[
2
],
'-'
,
pathhash
(
sys
.
argv
[
2
],
sys
.
argv
[
1
])
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