Commit Graph

29 Commits

Author SHA1 Message Date
Guido van Rossum
3886bb6997 Add DL_EXPORT() to all modules that could possibly be used
on BeOS or Windows.
1998-12-04 18:50:17 +00:00
Guido van Rossum
78694d970f Patches from Greg Stein to support 'P' format in struct module's
native format, as void* (translated to Python int or long).
Also adds PyLong_FromVoidPtr and PyLong_AsVoidPtr to longobject.c.
1998-09-18 14:14:13 +00:00
Guido van Rossum
39ef2274a3 Unsigned 1 and 2 byte sized formats shouldn't result in long integer values! 1998-06-29 04:00:40 +00:00
Fred Drake
d3dbb38e98 get_long(): Use PyErr_ExceptionMatches(...) instead of PyErr_Occurred(...). 1998-05-28 04:35:49 +00:00
Guido van Rossum
730806d3d9 Make new gcc -Wall happy 1998-04-10 22:27:42 +00:00
Guido van Rossum
9897f0f847 Oops, left in a non-standard multi-line doc string that GCC finds okay
but other compilers don't like.
1997-12-21 06:46:20 +00:00
Guido van Rossum
414fd4843a Added doc strings, suggested by Charles G. Waldman (but massaged quite a bit). 1997-12-19 04:24:24 +00:00
Guido van Rossum
8f3c812e22 Fix due to Bill Noon for problem discovered by Ken Manheimer: packing
0.0 as float or double would yield the representation for 1.0!
1997-11-04 17:12:33 +00:00
Guido van Rossum
0cb96de269 Apply two changes, systematically:
(1) Use PyErr_NewException("module.class", NULL, NULL) to create the
    exception object.

(2) Remove all calls to Py_FatalError(); instead, return or
    ignore the errors -- the import code now checks PyErr_Occurred()
    after calling a module's init function, so it's no longer a
    fatal error for the initialization to fail.

Also did some small cleanups, e.g. removed unnecessary test for
"already initialized" from initfpectl(), and unified
initposix()/initnt().

I haven't checked this very thoroughly, so while the changes are
pretty trivial -- beware of untested code!
1997-10-01 04:29:29 +00:00
Guido van Rossum
9eb671fac3 Contribution by Hannu Krosing (with some changes).
Added 'p' format character for Pascal string (i.e. leading length
byte).  This uses the count prefix line 's' does, except that the
count includes the length byte; i.e. '10p' takes 10 bytes packed but
has space for a length byte and 9 data bytes.
1997-09-05 07:08:39 +00:00
Guido van Rossum
e20aef574a Ignore whitespace between formats (not internal to a count+format). 1997-08-26 20:39:54 +00:00
Guido van Rossum
7844e38a98 Keep Microsoft VC happy. 1997-04-11 20:44:04 +00:00
Guido van Rossum
6c87ecaff1 Changed the ``add/sub_offset'' hacks for dealing with C's unsigned
int/long types, and use the new PyLong_FromUnsignedLong() and
PyLong_AsUnsignedLong() interfaces instead.

Semantic change: the 'I' format will now always return a long int.
1997-01-03 19:08:16 +00:00
Guido van Rossum
b9d338cbfb Fill pad bytes with zeros (fixing a bug dating from the very first version!). 1997-01-03 15:40:33 +00:00
Barry Warsaw
b9a781e177 Scratch the ears of gcc -Wall. 1997-01-03 00:26:28 +00:00
Guido van Rossum
4ccc531f34 Ok, ok, I've fixed gradual underflow on packing too.
Still don't know what to do with Inf/NaN, so I raise an exception on
pack(), and something random decided by ldexp() will happen on
unpack().
1997-01-02 23:23:20 +00:00
Guido van Rossum
07ef655222 Oops -- unpack float/double didn't do the right thing if e==0. 1997-01-02 22:31:07 +00:00
Guido van Rossum
74679b455f Support float and double in non-native formats.
These use the ANSI/IEEE standard, which is also used by XDR;
so the _xdr module may become obsolete.
1997-01-02 22:21:36 +00:00
Guido van Rossum
60c50614e1 Added better handling of unsigned longs -- a Python long returned by
unpack('L', ...) is now acceptable to pack('L', ...).
1996-12-31 16:29:52 +00:00
Guido van Rossum
3aa27fd315 Fix the first bugs... treatment of 0 count was wrong, and memchr()
should be memset().
1996-12-31 02:10:45 +00:00
Guido van Rossum
f7e6b4b388 Pretty much rewritten to fulfull several long-standing wishes:
-- The whole implementation is now more table-driven.

-- Unsigned integers.  Format characters 'B', 'H', 'I' and 'L'
mean unsigned byte, short, int and long.  For 'I' and 'L', the return
value is a Python long integer if a Python plain integer can't
represent the required range (note: this is dependent on the size of
the relevant C types only, not of the sign of the actual value).

-- A new format character 's' packs/unpacks a string.  When given a
count prefix, this is the size of the string, not a repeat count like
for the other format characters; e.g. '10s' means a single 10-byte
string, while '10c' means 10 characters.  For packing, the string is
truncated or padded with null bytes as appropriate to make it fit.
For unpacking, the resulting string always has exactly the specified
number of bytes.  As a special case, '0s' means a single, empty
string (while '0c' means 0 characters).

-- Various byte order options.  The first character of the format
string determines the byte order, size and alignment, as follows:

First character		Byte order		size and alignment

	'@'		native			native
	'='		native			standard
	'<'		little-endian		standard
	'>'		big-endian		standard
	'!'		network (= big-endian)	standard

If the first character is not one of these, '@' is assumed.

Native byte order is big-endian or little-endian, depending on the
host system (e.g. Motorola and Sun are big-endian; Intel and DEC are
little-endian).

Native size and alignment are determined using the C compiler's sizeof
expression.  This is always combined with native byte order.

Standard size and alignment are as follows: no alignment is required
for any type (so you have to use pad bytes); short is 2 bytes; int and
long are 4 bytes.  In this mode, there is no support for float and
double.

Note the difference between '@' and '=': both use native byte order,
but the size and alignment of the latter is standardized.

The form '!' is available for those poor souls who can't remember
whether network byte order is big-endian or little-endian.

There is no way to indicate non-native byte order (i.e. force
byte-swapping); use the appropriate choice of '<' or '>'.
1996-12-31 01:41:25 +00:00
Barry Warsaw
30695fa3cd Renamed. 1996-12-12 23:32:31 +00:00
Guido van Rossum
d266eb460e New permission notice, includes CNRI. 1996-10-25 14:44:06 +00:00
Jack Jansen
971e1df3df Quick hack so PowerPC macs can access system structures 1995-02-02 14:29:10 +00:00
Guido van Rossum
524b588553 Added 1995 to copyright message.
Setup.in: clarified Tk comments somewhat.
structmodule.c: use memcpy() instead of double precision assignment.
1995-01-04 19:10:35 +00:00
Guido van Rossum
b6775db241 Merge alpha100 branch back to main trunk 1994-08-01 11:34:53 +00:00
Guido van Rossum
9bfef44d97 * Changed all copyright messages to include 1993.
* Stubs for faster implementation of local variables (not yet finished)
* Added function name to code object.  Print it for code and function
  objects.  THIS MAKES THE .PYC FILE FORMAT INCOMPATIBLE (the version
  number has changed accordingly)
* Print address of self for built-in methods
* New internal functions getattro and setattro (getattr/setattr with
  string object arg)
* Replaced "dictobject" with more powerful "mappingobject"
* New per-type functio tp_hash to implement arbitrary object hashing,
  and hashobject() to interface to it
* Added built-in functions hash(v) and hasattr(v, 'name')
* classobject: made some functions static that accidentally weren't;
  added __hash__ special instance method to implement hash()
* Added proper comparison for built-in methods and functions
1993-03-29 10:43:31 +00:00
Guido van Rossum
90ddb7b5cb unpack() now returns a tuple, not a list 1992-08-19 16:44:15 +00:00
Guido van Rossum
0297512a08 struct: pack/unpack binary structs; fcntl: fcntl(), ioctl(). 1992-08-17 08:55:12 +00:00