Issue577728

In CPython, the struct module can manage 64 bits
integers in unsigned and signed form with the 'Q' or
'q' format code.

This patch duplicates this missing functionnality in
Jython.

Patch as attached file, simple test script folows

from struct import *

#unsigned long check
try:
	pack('<Q',-1)
	print 'Error: unsigned long should not work'
except error:
	pass
	
try:
	pack('>Q',-1)
	print 'Error: unsigned long should not work'
except error:
	pass

big_long=0x10000000000000000L
#oversized unsigned long check
try:
	print pack('<Q',big_long)
	print 'Error, should not try to pack >64bits ints'
except OverflowError:
	pass
	
try:
	print pack('>Q',big_long)
	print 'Error, should not try to pack >64bits ints'
except OverflowError:
	pass

#oversized positive signed long check
try:
	print pack('<q',big_long)
	print 'Error, should not try to pack >64bits ints'
except OverflowError:
	pass
	
try:
	print pack('>q',big_long)
	print 'Error, should not try to pack >64bits ints'
except OverflowError:
	pass

#oversized negative signed long check
big_long=-big_long
try:
	print pack('<q',big_long)
	print 'Error, should not try to pack >64bits ints'
except OverflowError:
	pass
	
try:
	print pack('>q',big_long)
	print 'Error, should not try to pack >64bits ints'
except OverflowError:
	pass

u_data=(0x1L,0x10000L,0x100000000L)
s_data=(0x1L,-0x10000L,0x0FFFFFFFFL,-0x100000000L)
#internal pack-unpack coherence check

s=pack('<QQQ',u_data[0],u_data[1],u_data[2])
if u_data!=unpack('<QQQ',s):
	print "internal coherence error:		%s ==> %s ==>
%s"%(`u_data`,`s`,`unpack('<QQQ',s)`)


s=pack('>QQQ',u_data[0],u_data[1],u_data[2])
if u_data!=unpack('>QQQ',s):
	print "internal coherence error:		%s ==> %s ==>
%s"%(`u_data`,`s`,`unpack('>QQQ',s)`)

s=pack('<qqqq',s_data[0],s_data[1],s_data[2],s_data[3])
if s_data!=unpack('<qqqq',s):
	print "internal coherence error:		%s ==> %s ==>
%s"%(`s_data`,`s`,`unpack('<qqqq',s)`)

s=pack('>qqqq',s_data[0],s_data[1],s_data[2],s_data[3])
if s_data!=unpack('>qqqq',s):
	print "internal coherence error:		%s ==> %s ==>
%s"%(`s_data`,`s`,`unpack('>qqqq',s)`)

#external unpack coherence check
string_from_CPython='\x00\x00\x00\x00\x00\x01\x11p\xff\xff\xff\xff\xff\xfe\xc7\x80\xff\xff\xff\xff\xff\xff\xff\xfb\x00\x00\x00\x00\x00\x018\x80'
if
(70000,-80000,-5,80000)!=unpack('!Qqqq',string_from_CPython):
	print 'Error unpacking from CPython !'

Logged In: YES 
user_id=289277

Grr, my python test file did NOT like sourceforge
formatting, resent attached 

Logged In: YES 
user_id=4201

Added as struct.java: 2.7;

The patch is a step in the right direction, but it does not
implement
the funtionallity correctly. For example, the test_struct
still fails
for some long values. If you want to, an other patch that
allows dist/test/test_struct.py to complete will be very
welcome.

Logged In: YES 
user_id=4201

Added as struct.java: 2.7;

The patch is a step in the right direction, but it does not
implement
the funtionallity correctly. For example, the test_struct
still fails
for some long values. If you want to, an other patch that
allows dist/test/test_struct.py to complete will be very
welcome.