Commit Graph

34 Commits

Author SHA1 Message Date
Victor Stinner c5c3ba4bec Add _PyBytesWriter_Resize() function
This function gives a control to the buffer size without using min_size.
2015-10-14 13:56:47 +02:00
Victor Stinner 2bf8993db9 Optimize bytes.fromhex() and bytearray.fromhex()
Issue #25401: Optimize bytes.fromhex() and bytearray.fromhex(): they are now
between 2x and 3.5x faster. Changes:

* Use a fast-path working on a char* string for ASCII string
* Use a slow-path for non-ASCII string
* Replace slow hex_digit_to_int() function with a O(1) lookup in
  _PyLong_DigitValue precomputed table
* Use _PyBytesWriter API to handle the buffer
* Add unit tests to check the error position in error messages
2015-10-14 11:25:33 +02:00
Victor Stinner 772b2b09f2 Optimize bytearray % args
Issue #25399: Don't create temporary bytes objects: modify _PyBytes_Format() to
create work directly on bytearray objects.

* Rename _PyBytes_Format() to _PyBytes_FormatEx() just in case if something
  outside CPython uses it
* _PyBytes_FormatEx() now uses (char*, Py_ssize_t) for the input string, so
  bytearray_format() doesn't need tot create a temporary input bytes object
* Add use_bytearray parameter to _PyBytes_FormatEx() which is passed to
  _PyBytesWriter, to create a bytearray buffer instead of a bytes buffer

Most formatting operations are now between 2.5 and 5 times faster.
2015-10-14 09:56:53 +02:00
Victor Stinner 661aaccf9d Add use_bytearray attribute to _PyBytesWriter
Issue #25399: Add a new use_bytearray attribute to _PyBytesWriter to use a
bytearray buffer, instead of using a bytes object.
2015-10-14 09:41:48 +02:00
Victor Stinner c29e29bed1 Relax _PyBytesWriter API
Don't require _PyBytesWriter pointer to be a "char *". Same change for
_PyBytesWriter_WriteBytes() parameter.

For example, binascii uses "unsigned char*".
2015-10-12 13:12:54 +02:00
Victor Stinner ce179bf6ba Add _PyBytesWriter_WriteBytes() to factorize the code 2015-10-09 12:57:22 +02:00
Victor Stinner 53926a1ce2 _PyBytesWriter: rename size attribute to min_size 2015-10-09 12:37:03 +02:00
Victor Stinner b3653a3458 Issue #25318: cleanup code _PyBytesWriter
Rename "stack buffer" to "small buffer".

Add also an assertion in _PyBytesWriter_GetPos().
2015-10-09 03:38:24 +02:00
Victor Stinner 0016507c16 Issue #25318: Move _PyBytesWriter to bytesobject.c
Declare also the private API in bytesobject.h.
2015-10-09 01:53:21 +02:00
Ethan Furman b95b56150f Issue20284: Implement PEP461 2015-01-23 20:05:18 -08:00
Antoine Pitrou 9ed5f27266 Issue #18722: Remove uses of the "register" keyword in C code. 2013-08-13 20:18:52 +02:00
Victor Stinner d0880d57b0 Simplify and optimize formatlong()
* Remove _PyBytes_FormatLong(): inline it into formatlong()
 * the input type is always a long, so remove the code for bool
 * don't duplicate the string if the length does not change
 * Use PyUnicode_DATA() instead of _PyUnicode_AsString()
2012-04-27 23:40:13 +02:00
Martin v. Löwis 4d0d471a80 Merge branches/pep-0384. 2010-12-03 20:14:31 +00:00
Benjamin Peterson 8f67d0893f make hashes always the size of pointers; introduce Py_hash_t #9778 2010-10-17 20:54:53 +00:00
Eric Smith 0923d1d8d7 The other half of Issue #1580: use short float repr where possible.
Addresses the float -> string conversion, using David Gay's code which
was added in Mark Dickinson's checkin r71663.

Also addresses these, which are intertwined with the short repr
changes:

- Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'
- Issue #5515: 'n' formatting with commas no longer works poorly
    with leading zeros.
- PEP 378 Format Specifier for Thousands Separator: implemented
    for floats.
2009-04-16 20:16:10 +00:00
Eric Smith a3b1ac8dca Added ',' thousands grouping to int.__format__. See PEP 378.
This is incomplete, but I want to get some version into the next alpha. I am still working on:
Documentation.
More tests.
Implement for floats.

In addition, there's an existing bug with 'n' formatting that carries forward to thousands grouping (issue 5515).
2009-04-03 14:45:06 +00:00
Benjamin Peterson c15a07333e make bytes(o) respect __bytes__ #2415
This adds two new C-API functions: PyObject_Bytes and PyBytes_FromObject.

Reviewer: Barry
2008-08-26 16:46:47 +00:00
Eric Smith 6d7e7a730e Merged revisions 64491 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r64491 | eric.smith | 2008-06-23 20:42:10 -0400 (Mon, 23 Jun 2008) | 1 line

  Modified interface to _Py_[String|Unicode]InsertThousandsGrouping, in anticipation of fixing issue 3140.
........
2008-06-24 01:06:47 +00:00
Georg Brandl 0c77a82c3d Merged revisions 63829-63831,63858,63865,63879,63882,63948,63970-63972,63976,63989,64014-64015,64021-64022,64063-64065,64067 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r63829 | mark.summerfield | 2008-05-31 15:05:34 +0200 (Sat, 31 May 2008) | 4 lines

  Added a note to [] that special forms & special chars lose their meaning
  and backrefs can't be used inside []
........
  r63830 | georg.brandl | 2008-05-31 16:40:09 +0200 (Sat, 31 May 2008) | 2 lines

  #3010: clarification about stdin/use_rawinput.
........
  r63831 | georg.brandl | 2008-05-31 16:45:55 +0200 (Sat, 31 May 2008) | 2 lines

  #3005: add explaining sentence to easydialogs docs.
........
  r63858 | georg.brandl | 2008-06-01 18:41:31 +0200 (Sun, 01 Jun 2008) | 2 lines

  Add plain text make target.
........
  r63865 | georg.brandl | 2008-06-01 21:24:36 +0200 (Sun, 01 Jun 2008) | 2 lines

  Spaces vs. tabs.
........
  r63879 | gregory.p.smith | 2008-06-02 00:57:47 +0200 (Mon, 02 Jun 2008) | 3 lines

  Make the _H #define's match the header file names.  Fix comments to
  mention the correct type names.
........
  r63882 | gregory.p.smith | 2008-06-02 01:48:47 +0200 (Mon, 02 Jun 2008) | 3 lines

  Adds a Thread.getIdent() method to provide the _get_ident() value for
  any given threading.Thread object.  feature request issue 2871.
........
  r63948 | alexandre.vassalotti | 2008-06-04 22:41:44 +0200 (Wed, 04 Jun 2008) | 2 lines

  Fixed complex.__getnewargs__() to not emit another complex object.
........
  r63970 | andrew.kuchling | 2008-06-06 01:33:54 +0200 (Fri, 06 Jun 2008) | 1 line

  Document 'utc' parameter
........
  r63971 | andrew.kuchling | 2008-06-06 01:35:31 +0200 (Fri, 06 Jun 2008) | 1 line

  Add various items
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  r63972 | andrew.kuchling | 2008-06-06 01:35:48 +0200 (Fri, 06 Jun 2008) | 1 line

  Grammar fix
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  r63976 | georg.brandl | 2008-06-06 09:34:50 +0200 (Fri, 06 Jun 2008) | 2 lines

  Markup fix.
........
  r63989 | thomas.heller | 2008-06-06 20:42:11 +0200 (Fri, 06 Jun 2008) | 2 lines

  Add a reminder for the maintainer of whatsnew.
........
  r64014 | georg.brandl | 2008-06-07 17:59:10 +0200 (Sat, 07 Jun 2008) | 3 lines

  Factor out docstring dedenting from inspect.getdoc() into inspect.cleandoc()
  to ease standalone use of the algorithm.
........
  r64015 | georg.brandl | 2008-06-07 18:04:01 +0200 (Sat, 07 Jun 2008) | 2 lines

  Revert unwanted changes.
........
  r64021 | georg.brandl | 2008-06-07 20:16:12 +0200 (Sat, 07 Jun 2008) | 2 lines

  X-ref to numbers module.
........
  r64022 | georg.brandl | 2008-06-07 20:17:37 +0200 (Sat, 07 Jun 2008) | 3 lines

  Document the "st" API, to avoid confusion with the "new" AST.
  Add a note about using the new AST module.
........
  r64063 | martin.v.loewis | 2008-06-10 07:03:35 +0200 (Tue, 10 Jun 2008) | 2 lines

  Add Gregor Lingl.
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  r64064 | georg.brandl | 2008-06-10 09:45:28 +0200 (Tue, 10 Jun 2008) | 2 lines

  Add the "ast" module, containing helpers to ease use of the "_ast" classes.
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  r64065 | raymond.hettinger | 2008-06-10 09:57:15 +0200 (Tue, 10 Jun 2008) | 1 line

  Add Arnaud for his efforts on multi-arg set operations.
........
  r64067 | georg.brandl | 2008-06-10 14:46:39 +0200 (Tue, 10 Jun 2008) | 2 lines

  #2536: fix itertools.permutations and itertools.combinations docstrings.
........
2008-06-10 16:37:50 +00:00
Benjamin Peterson 27ad091ba0 remove PyBytes_Format from header 2008-05-26 15:07:14 +00:00
Christian Heimes 2c9c7a5f33 Renamed files bytesobject.[ch] and stringobject.[ch]
Fixed Windows build
2008-05-26 13:42:13 +00:00
Christian Heimes 9c4756ea26 Renamed PyBytes to PyByteArray 2008-05-26 13:22:05 +00:00
Christian Heimes 90aa7646af #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. 2007-12-19 02:45:37 +00:00
Christian Heimes a22e8bdfd9 Added all PyTypeObjects to the appropriate header files.
Before the patch a lot of internal types weren't available in the header files. The patch exposes the new iterators, views and some other types to all C modules. I've also renamed some of the types and tp_names.
2007-11-29 22:35:39 +00:00
Neal Norwitz 1978470c3b Fix typo in comment 2007-08-25 05:22:02 +00:00
Neal Norwitz faa54a3929 Code review of the new buffer protocol. Mostly add questions that should
be answered with the comments removed.

There are many places that require checks when doing arithmetic for memory
sizes when allocating memory.  Otherwise, overflow is possible with
a subsequent crash.

Fix SF #1777057 which was a result of not initializing the new BufferError
properly.  Had to update the test for exceptions for BufferError too.
2007-08-19 04:23:20 +00:00
Travis E. Oliphant b99f762f10 Merged in py3k-buffer branch to main line. All objects now use the buffer protocol in PEP 3118. 2007-08-18 11:21:56 +00:00
Martin v. Löwis 5d7428b8ce Fix merge breakage. 2007-07-21 18:47:48 +00:00
Martin v. Löwis 9f2e346911 Merged revisions 56467-56482 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/p3yk

................
  r56477 | martin.v.loewis | 2007-07-21 09:04:38 +0200 (Sa, 21 Jul 2007) | 11 lines

  Merged revisions 56466-56476 via svnmerge from
  svn+ssh://pythondev@svn.python.org/python/trunk

  ........
    r56476 | martin.v.loewis | 2007-07-21 08:55:02 +0200 (Sa, 21 Jul 2007) | 4 lines

    PEP 3123: Provide forward compatibility with Python 3.0, while keeping
    backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
    PyVarObject_HEAD_INIT.
  ........
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  r56478 | martin.v.loewis | 2007-07-21 09:47:23 +0200 (Sa, 21 Jul 2007) | 2 lines

  PEP 3123: Use proper C inheritance for PyObject.
................
  r56479 | martin.v.loewis | 2007-07-21 10:06:55 +0200 (Sa, 21 Jul 2007) | 3 lines

  Add longintrepr.h to Python.h, so that the compiler can
  see that PyFalse is really some kind of PyObject*.
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  r56480 | martin.v.loewis | 2007-07-21 10:47:18 +0200 (Sa, 21 Jul 2007) | 2 lines

  Qualify SHIFT, MASK, BASE.
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  r56482 | martin.v.loewis | 2007-07-21 19:10:57 +0200 (Sa, 21 Jul 2007) | 2 lines

  Correctly refer to _ob_next.
................
2007-07-21 17:22:18 +00:00
Guido van Rossum 2d28f59245 Add asserts to PyBytes_AS_STRING and PyBytes_GET_SIZE. 2007-06-14 00:31:21 +00:00
Guido van Rossum ad7d8d10b7 Rough and dirty job -- allow concatenation of bytes and arbitrary
buffer-supporting objects (Unicode always excluded), and also of
str and bytes.
(For some reason u"" + b"" doesn't fail, I'll investigate later.)
2007-04-13 01:39:34 +00:00
Guido van Rossum a0867f79bb Optimizations for bytes reallocation.
This uses up to 12.5% overallocation, not entirely unlike list_resize().
Could probably use more tweaks for odd allocation patterns, TBD.

Also add __alloc__() method which returns the actually allocated size.

PS. I'm now convinced that we need something like "".join(); later.
2006-05-05 04:34:18 +00:00
Guido van Rossum d624f18a21 Added much functionality to the bytes type.
Change file.readinto() to require binary mode.
2006-04-24 13:47:05 +00:00
Guido van Rossum 4dfe8a1131 Here is a bytes type. It's very minimal but it's a start. 2006-04-22 23:28:04 +00:00