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Kirill Smelkov
ZODB
Commits
ad2e08df
Commit
ad2e08df
authored
Oct 05, 2001
by
Jeremy Hylton
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Add simpler implementations of p64() and u64() for Python 2.2.
parent
eabb0131
Changes
1
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1 changed file
with
42 additions
and
24 deletions
+42
-24
src/ZODB/utils.py
src/ZODB/utils.py
+42
-24
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src/ZODB/utils.py
View file @
ad2e08df
...
@@ -83,11 +83,29 @@
...
@@ -83,11 +83,29 @@
#
#
##############################################################################
##############################################################################
import
sys
import
TimeStamp
,
time
,
struct
import
TimeStamp
,
time
,
struct
t32
=
1L
<<
32
if
sys
.
version
>=
(
2
,
2
):
def
p64
(
v
,
pack
=
struct
.
pack
):
# Note that the distinction between ints and longs is blurred in
# Python 2.2. So make u64() and U64() the same.
def
p64
(
v
,
pack
=
struct
.
pack
):
"""Pack an integer or long into a 8-byte string"""
return
pack
(
">Q"
,
v
)
def
u64
(
v
,
unpack
=
struct
.
unpack
):
"""Unpack an 8-byte string into a 64-bit long integer."""
return
unpack
(
">Q"
,
v
)[
0
]
U64
=
u64
else
:
t32
=
1L
<<
32
def
p64
(
v
,
pack
=
struct
.
pack
):
"""Pack an integer or long into a 8-byte string"""
"""Pack an integer or long into a 8-byte string"""
if
v
<
t32
:
if
v
<
t32
:
h
=
0
h
=
0
...
@@ -95,8 +113,8 @@ def p64(v, pack=struct.pack):
...
@@ -95,8 +113,8 @@ def p64(v, pack=struct.pack):
h
,
v
=
divmod
(
v
,
t32
)
h
,
v
=
divmod
(
v
,
t32
)
return
pack
(
">II"
,
h
,
v
)
return
pack
(
">II"
,
h
,
v
)
def
u64
(
v
,
unpack
=
struct
.
unpack
):
def
u64
(
v
,
unpack
=
struct
.
unpack
):
"""Unpack an 8-byte string into a 64-bit (or long) integer
"""
"""Unpack an 8-byte string into a 64-bit (or long) integer.
"""
h
,
v
=
unpack
(
">ii"
,
v
)
h
,
v
=
unpack
(
">ii"
,
v
)
if
v
<
0
:
if
v
<
0
:
v
=
t32
+
v
v
=
t32
+
v
...
@@ -106,7 +124,7 @@ def u64(v, unpack=struct.unpack):
...
@@ -106,7 +124,7 @@ def u64(v, unpack=struct.unpack):
v
=
(
long
(
h
)
<<
32
)
+
v
v
=
(
long
(
h
)
<<
32
)
+
v
return
v
return
v
def
U64
(
v
,
unpack
=
struct
.
unpack
):
def
U64
(
v
,
unpack
=
struct
.
unpack
):
"""Same as u64 but always returns a long."""
"""Same as u64 but always returns a long."""
h
,
v
=
unpack
(
">II"
,
v
)
h
,
v
=
unpack
(
">II"
,
v
)
if
h
:
if
h
:
...
...
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