cpython/Python/pythonrun.c
Thomas Wouters 4d70c3d9dd Partially merge trunk into p3yk. The removal of Mac/Tools is confusing svn
merge in bad ways, so I'll have to merge that extra-carefully (probably manually.)

Merged revisions 46495-46605 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r46495 | tim.peters | 2006-05-28 03:52:38 +0200 (Sun, 28 May 2006) | 2 lines

  Added missing svn:eol-style property to text files.
........
  r46497 | tim.peters | 2006-05-28 12:41:29 +0200 (Sun, 28 May 2006) | 3 lines

  PyErr_Display(), PyErr_WriteUnraisable():  Coverity found a cut-and-paste
  bug in both:  `className` was referenced before being checked for NULL.
........
  r46499 | fredrik.lundh | 2006-05-28 14:06:46 +0200 (Sun, 28 May 2006) | 5 lines

  needforspeed: added Py_MEMCPY macro (currently tuned for Visual C only),
  and use it for string copy operations.  this gives a 20% speedup on some
  string benchmarks.
........
  r46501 | michael.hudson | 2006-05-28 17:51:40 +0200 (Sun, 28 May 2006) | 26 lines

  Quality control, meet exceptions.c.

  Fix a number of problems with the need for speed code:

  One is doing this sort of thing:

      Py_DECREF(self->field);
      self->field = newval;
      Py_INCREF(self->field);

  without being very sure that self->field doesn't start with a
  value that has a __del__, because that almost certainly can lead
  to segfaults.

  As self->args is constrained to be an exact tuple we may as well
  exploit this fact consistently.  This leads to quite a lot of
  simplification (and, hey, probably better performance).

  Add some error checking in places lacking it.

  Fix some rather strange indentation in the Unicode code.

  Delete some trailing whitespace.

  More to come, I haven't fixed all the reference leaks yet...
........
  r46502 | george.yoshida | 2006-05-28 18:39:09 +0200 (Sun, 28 May 2006) | 3 lines

  Patch #1080727: add "encoding" parameter to doctest.DocFileSuite
  Contributed by Bjorn Tillenius.
........
  r46503 | martin.v.loewis | 2006-05-28 18:57:38 +0200 (Sun, 28 May 2006) | 4 lines

  Rest of patch #1490384: Commit icon source, remove
  claim that Erik von Blokland is the author of the
  installer picture.
........
  r46504 | michael.hudson | 2006-05-28 19:40:29 +0200 (Sun, 28 May 2006) | 16 lines

  Quality control, meet exceptions.c, round two.

  Make some functions that should have been static static.

  Fix a bunch of refleaks by fixing the definition of
  MiddlingExtendsException.

  Remove all the __new__ implementations apart from
  BaseException_new.  Rewrite most code that needs it to cope with
  NULL fields (such code could get excercised anyway, the
  __new__-removal just makes it more likely).  This involved
  editing the code for WindowsError, which I can't test.

  This fixes all the refleaks in at least the start of a regrtest
  -R :: run.
........
  r46505 | marc-andre.lemburg | 2006-05-28 19:46:58 +0200 (Sun, 28 May 2006) | 10 lines

  Initial version of systimes - a module to provide platform dependent
  performance measurements.

  The module is currently just a proof-of-concept implementation, but
  will integrated into pybench once it is stable enough.

  License: pybench license.
  Author: Marc-Andre Lemburg.
........
  r46507 | armin.rigo | 2006-05-28 21:13:17 +0200 (Sun, 28 May 2006) | 15 lines

  ("Forward-port" of r46506)

  Remove various dependencies on dictionary order in the standard library
  tests, and one (clearly an oversight, potentially critical) in the
  standard library itself - base64.py.

  Remaining open issues:
   * test_extcall is an output test, messy to make robust
   * tarfile.py has a potential bug here, but I'm not familiar
     enough with this code.  Filed in as SF bug #1496501.
   * urllib2.HTTPPasswordMgr() returns a random result if there is more
     than one matching root path.  I'm asking python-dev for
     clarification...
........
  r46508 | georg.brandl | 2006-05-28 22:11:45 +0200 (Sun, 28 May 2006) | 4 lines

  The empty string is a valid import path.
   (fixes #1496539)
........
  r46509 | georg.brandl | 2006-05-28 22:23:12 +0200 (Sun, 28 May 2006) | 3 lines

  Patch #1496206: urllib2 PasswordMgr ./. default ports
........
  r46510 | georg.brandl | 2006-05-28 22:57:09 +0200 (Sun, 28 May 2006) | 3 lines

  Fix refleaks in UnicodeError get and set methods.
........
  r46511 | michael.hudson | 2006-05-28 23:19:03 +0200 (Sun, 28 May 2006) | 3 lines

  use the UnicodeError traversal and clearing functions in UnicodeError
  subclasses.
........
  r46512 | thomas.wouters | 2006-05-28 23:32:12 +0200 (Sun, 28 May 2006) | 4 lines


  Make last patch valid C89 so Windows compilers can deal with it.
........
  r46513 | georg.brandl | 2006-05-28 23:42:54 +0200 (Sun, 28 May 2006) | 3 lines

  Fix ref-antileak in _struct.c which eventually lead to deallocating None.
........
  r46514 | georg.brandl | 2006-05-28 23:57:35 +0200 (Sun, 28 May 2006) | 4 lines

  Correct None refcount issue in Mac modules. (Are they
  still used?)
........
  r46515 | armin.rigo | 2006-05-29 00:07:08 +0200 (Mon, 29 May 2006) | 3 lines

  A clearer error message when passing -R to regrtest.py with
  release builds of Python.
........
  r46516 | georg.brandl | 2006-05-29 00:14:04 +0200 (Mon, 29 May 2006) | 3 lines

  Fix C function calling conventions in _sre module.
........
  r46517 | georg.brandl | 2006-05-29 00:34:51 +0200 (Mon, 29 May 2006) | 3 lines

  Convert audioop over to METH_VARARGS.
........
  r46518 | georg.brandl | 2006-05-29 00:38:57 +0200 (Mon, 29 May 2006) | 3 lines

  METH_NOARGS functions do get called with two args.
........
  r46519 | georg.brandl | 2006-05-29 11:46:51 +0200 (Mon, 29 May 2006) | 4 lines

  Fix refleak in socketmodule. Replace bogus Py_BuildValue calls.
  Fix refleak in exceptions.
........
  r46520 | nick.coghlan | 2006-05-29 14:43:05 +0200 (Mon, 29 May 2006) | 7 lines

  Apply modified version of Collin Winter's patch #1478788

  Renames functional extension module to _functools and adds a Python
  functools module so that utility functions like update_wrapper can be
  added easily.
........
  r46522 | georg.brandl | 2006-05-29 15:53:16 +0200 (Mon, 29 May 2006) | 3 lines

  Convert fmmodule to METH_VARARGS.
........
  r46523 | georg.brandl | 2006-05-29 16:13:21 +0200 (Mon, 29 May 2006) | 3 lines

  Fix #1494605.
........
  r46524 | georg.brandl | 2006-05-29 16:28:05 +0200 (Mon, 29 May 2006) | 3 lines

  Handle PyMem_Malloc failure in pystrtod.c. Closes #1494671.
........
  r46525 | georg.brandl | 2006-05-29 16:33:55 +0200 (Mon, 29 May 2006) | 3 lines

  Fix compiler warning.
........
  r46526 | georg.brandl | 2006-05-29 16:39:00 +0200 (Mon, 29 May 2006) | 3 lines

  Fix #1494787 (pyclbr counts whitespace as superclass name)
........
  r46527 | bob.ippolito | 2006-05-29 17:47:29 +0200 (Mon, 29 May 2006) | 1 line

  simplify the struct code a bit (no functional changes)
........
  r46528 | armin.rigo | 2006-05-29 19:59:47 +0200 (Mon, 29 May 2006) | 2 lines

  Silence a warning.
........
  r46529 | georg.brandl | 2006-05-29 21:39:45 +0200 (Mon, 29 May 2006) | 3 lines

  Correct some value converting strangenesses.
........
  r46530 | nick.coghlan | 2006-05-29 22:27:44 +0200 (Mon, 29 May 2006) | 1 line

  When adding a module like functools, it helps to let SVN know about the file.
........
  r46531 | georg.brandl | 2006-05-29 22:52:54 +0200 (Mon, 29 May 2006) | 4 lines

  Patches #1497027 and #972322: try HTTP digest auth first,
  and watch out for handler name collisions.
........
  r46532 | georg.brandl | 2006-05-29 22:57:01 +0200 (Mon, 29 May 2006) | 3 lines

  Add News entry for last commit.
........
  r46533 | georg.brandl | 2006-05-29 23:04:52 +0200 (Mon, 29 May 2006) | 4 lines

  Make use of METH_O and METH_NOARGS where possible.
  Use Py_UnpackTuple instead of PyArg_ParseTuple where possible.
........
  r46534 | georg.brandl | 2006-05-29 23:58:42 +0200 (Mon, 29 May 2006) | 3 lines

  Convert more modules to METH_VARARGS.
........
  r46535 | georg.brandl | 2006-05-30 00:00:30 +0200 (Tue, 30 May 2006) | 3 lines

  Whoops.
........
  r46536 | fredrik.lundh | 2006-05-30 00:42:07 +0200 (Tue, 30 May 2006) | 4 lines

  fixed "abc".count("", 100) == -96 error (hopefully, nobody's relying on
  the current behaviour ;-)
........
  r46537 | bob.ippolito | 2006-05-30 00:55:48 +0200 (Tue, 30 May 2006) | 1 line

  struct: modulo math plus warning on all endian-explicit formats for compatibility with older struct usage (ugly)
........
  r46539 | bob.ippolito | 2006-05-30 02:26:01 +0200 (Tue, 30 May 2006) | 1 line

  Add a length check to aifc to ensure it doesn't write a bogus file
........
  r46540 | tim.peters | 2006-05-30 04:25:25 +0200 (Tue, 30 May 2006) | 10 lines

  deprecated_err():  Stop bizarre warning messages when the tests
  are run in the order:

      test_genexps (or any other doctest-based test)
      test_struct
      test_doctest

  The `warnings` module needs an advertised way to save/restore
  its internal filter list.
........
  r46541 | tim.peters | 2006-05-30 04:26:46 +0200 (Tue, 30 May 2006) | 2 lines

  Whitespace normalization.
........
  r46542 | tim.peters | 2006-05-30 04:30:30 +0200 (Tue, 30 May 2006) | 2 lines

  Set a binary svn:mime-type property on this UTF-8 encoded file.
........
  r46543 | neal.norwitz | 2006-05-30 05:18:50 +0200 (Tue, 30 May 2006) | 1 line

  Simplify further by using AddStringConstant
........
  r46544 | tim.peters | 2006-05-30 06:16:25 +0200 (Tue, 30 May 2006) | 6 lines

  Convert relevant dict internals to Py_ssize_t.

  I don't have a box with nearly enough RAM, or an OS,
  that could get close to tickling this, though (requires
  a dict w/ at least 2**31 entries).
........
  r46545 | neal.norwitz | 2006-05-30 06:19:21 +0200 (Tue, 30 May 2006) | 1 line

  Remove stray | in comment
........
  r46546 | neal.norwitz | 2006-05-30 06:25:05 +0200 (Tue, 30 May 2006) | 1 line

  Use Py_SAFE_DOWNCAST for safety.  Fix format strings.  Remove 2 more stray | in comment
........
  r46547 | neal.norwitz | 2006-05-30 06:43:23 +0200 (Tue, 30 May 2006) | 1 line

  No DOWNCAST is required since sizeof(Py_ssize_t) >= sizeof(int) and Py_ReprEntr returns an int
........
  r46548 | tim.peters | 2006-05-30 07:04:59 +0200 (Tue, 30 May 2006) | 3 lines

  dict_print():  Explicitly narrow the return value
  from a (possibly) wider variable.
........
  r46549 | tim.peters | 2006-05-30 07:23:59 +0200 (Tue, 30 May 2006) | 5 lines

  dict_print():  So that Neal & I don't spend the rest of
  our lives taking turns rewriting code that works ;-),
  get rid of casting illusions by declaring a new variable
  with the obvious type.
........
  r46550 | georg.brandl | 2006-05-30 09:04:55 +0200 (Tue, 30 May 2006) | 3 lines

  Restore exception pickle support. #1497319.
........
  r46551 | georg.brandl | 2006-05-30 09:13:29 +0200 (Tue, 30 May 2006) | 3 lines

  Add a test case for exception pickling. args is never NULL.
........
  r46552 | neal.norwitz | 2006-05-30 09:21:10 +0200 (Tue, 30 May 2006) | 1 line

  Don't fail if the (sub)pkgname already exist.
........
  r46553 | georg.brandl | 2006-05-30 09:34:45 +0200 (Tue, 30 May 2006) | 3 lines

  Disallow keyword args for exceptions.
........
  r46554 | neal.norwitz | 2006-05-30 09:36:54 +0200 (Tue, 30 May 2006) | 5 lines

  I'm impatient.  I think this will fix a few more problems with the buildbots.
  I'm not sure this is the best approach, but I can't think of anything better.
  If this creates problems, feel free to revert, but I think it's safe and
  should make things a little better.
........
  r46555 | georg.brandl | 2006-05-30 10:17:00 +0200 (Tue, 30 May 2006) | 4 lines

  Do the check for no keyword arguments in __init__ so that
  subclasses of Exception can be supplied keyword args
........
  r46556 | georg.brandl | 2006-05-30 10:47:19 +0200 (Tue, 30 May 2006) | 3 lines

  Convert test_exceptions to unittest.
........
  r46557 | andrew.kuchling | 2006-05-30 14:52:01 +0200 (Tue, 30 May 2006) | 1 line

  Add SoC name, and reorganize this section a bit
........
  r46559 | tim.peters | 2006-05-30 17:53:34 +0200 (Tue, 30 May 2006) | 11 lines

  PyLong_FromString():  Continued fraction analysis (explained in
  a new comment) suggests there are almost certainly large input
  integers in all non-binary input bases for which one Python digit
  too few is initally allocated to hold the final result.  Instead
  of assert-failing when that happens, allocate more space.  Alas,
  I estimate it would take a few days to find a specific such case,
  so this isn't backed up by a new test (not to mention that such
  a case may take hours to run, since conversion time is quadratic
  in the number of digits, and preliminary attempts suggested that
  the smallest such inputs contain at least a million digits).
........
  r46560 | fredrik.lundh | 2006-05-30 19:11:48 +0200 (Tue, 30 May 2006) | 3 lines

  changed find/rfind to return -1 for matches outside the source string
........
  r46561 | bob.ippolito | 2006-05-30 19:37:54 +0200 (Tue, 30 May 2006) | 1 line

  Change wrapping terminology to overflow masking
........
  r46562 | fredrik.lundh | 2006-05-30 19:39:58 +0200 (Tue, 30 May 2006) | 3 lines

  changed count to return 0 for slices outside the source string
........
  r46568 | tim.peters | 2006-05-31 01:28:02 +0200 (Wed, 31 May 2006) | 2 lines

  Whitespace normalization.
........
  r46569 | brett.cannon | 2006-05-31 04:19:54 +0200 (Wed, 31 May 2006) | 5 lines

  Clarify wording on default values for strptime(); defaults are used when better
  values cannot be inferred.

  Closes bug #1496315.
........
  r46572 | neal.norwitz | 2006-05-31 09:43:27 +0200 (Wed, 31 May 2006) | 1 line

  Calculate smallest properly (it was off by one) and use proper ssize_t types for Win64
........
  r46573 | neal.norwitz | 2006-05-31 10:01:08 +0200 (Wed, 31 May 2006) | 1 line

  Revert last checkin, it is better to do make distclean
........
  r46574 | neal.norwitz | 2006-05-31 11:02:44 +0200 (Wed, 31 May 2006) | 3 lines

  On 64-bit platforms running test_struct after test_tarfile would fail
  since the deprecation warning wouldn't be raised.
........
  r46575 | thomas.heller | 2006-05-31 13:37:58 +0200 (Wed, 31 May 2006) | 3 lines

  PyTuple_Pack is not available in Python 2.3, but ctypes must stay
  compatible with that.
........
  r46576 | andrew.kuchling | 2006-05-31 15:18:56 +0200 (Wed, 31 May 2006) | 1 line

  'functional' module was renamed to 'functools'
........
  r46577 | kristjan.jonsson | 2006-05-31 15:35:41 +0200 (Wed, 31 May 2006) | 1 line

  Fixup the PCBuild8 project directory.  exceptions.c have moved to Objects, and the functionalmodule.c has been replaced with _functoolsmodule.c.  Other minor changes to .vcproj files and .sln to fix compilation
........
  r46578 | andrew.kuchling | 2006-05-31 16:08:48 +0200 (Wed, 31 May 2006) | 15 lines

  [Bug #1473048]
  SimpleXMLRPCServer and DocXMLRPCServer don't look at
  the path of the HTTP request at all; you can POST or
  GET from / or /RPC2 or /blahblahblah with the same results.
  Security scanners that look for /cgi-bin/phf will therefore report
  lots of vulnerabilities.

  Fix: add a .rpc_paths attribute to the SimpleXMLRPCServer class,
  and report a 404 error if the path isn't on the allowed list.

  Possibly-controversial aspect of this change: the default makes only
  '/' and '/RPC2' legal.  Maybe this will break people's applications
  (though I doubt it).  We could just set the default to an empty tuple,
  which would exactly match the current behaviour.
........
  r46579 | andrew.kuchling | 2006-05-31 16:12:47 +0200 (Wed, 31 May 2006) | 1 line

  Mention SimpleXMLRPCServer change
........
  r46580 | tim.peters | 2006-05-31 16:28:07 +0200 (Wed, 31 May 2006) | 2 lines

  Trimmed trailing whitespace.
........
  r46581 | tim.peters | 2006-05-31 17:33:22 +0200 (Wed, 31 May 2006) | 4 lines

  _range_error():  Speed and simplify (there's no real need for
  loops here).  Assert that size_t is actually big enough, and
  that f->size is at least one.  Wrap a long line.
........
  r46582 | tim.peters | 2006-05-31 17:34:37 +0200 (Wed, 31 May 2006) | 2 lines

  Repaired error in new comment.
........
  r46584 | neal.norwitz | 2006-06-01 07:32:49 +0200 (Thu, 01 Jun 2006) | 4 lines

  Remove ; at end of macro.  There was a compiler recently that warned
  about extra semi-colons.  It may have been the HP C compiler.
  This file will trigger a bunch of those warnings now.
........
  r46585 | georg.brandl | 2006-06-01 08:39:19 +0200 (Thu, 01 Jun 2006) | 3 lines

  Correctly unpickle 2.4 exceptions via __setstate__ (patch #1498571)
........
  r46586 | georg.brandl | 2006-06-01 10:27:32 +0200 (Thu, 01 Jun 2006) | 3 lines

  Correctly allocate complex types with tp_alloc. (bug #1498638)
........
  r46587 | georg.brandl | 2006-06-01 14:30:46 +0200 (Thu, 01 Jun 2006) | 2 lines

  Correctly dispatch Faults in loads (patch #1498627)
........
  r46588 | georg.brandl | 2006-06-01 15:00:49 +0200 (Thu, 01 Jun 2006) | 3 lines

  Some code style tweaks, and remove apply.
........
  r46589 | armin.rigo | 2006-06-01 15:19:12 +0200 (Thu, 01 Jun 2006) | 5 lines

  [ 1497053 ] Let dicts propagate the exceptions in user __eq__().

  [ 1456209 ] dictresize() vulnerability ( <- backport candidate ).
........
  r46590 | tim.peters | 2006-06-01 15:41:46 +0200 (Thu, 01 Jun 2006) | 2 lines

  Whitespace normalization.
........
  r46591 | tim.peters | 2006-06-01 15:49:23 +0200 (Thu, 01 Jun 2006) | 2 lines

  Record bugs 1275608 and 1456209 as being fixed.
........
  r46592 | tim.peters | 2006-06-01 15:56:26 +0200 (Thu, 01 Jun 2006) | 5 lines

  Re-enable a new empty-string test added during the NFS sprint,
  but disabled then because str and unicode strings gave different
  results.  The implementations were repaired later during the
  sprint, but the new test remained disabled.
........
  r46594 | tim.peters | 2006-06-01 17:50:44 +0200 (Thu, 01 Jun 2006) | 7 lines

  Armin committed his patch while I was reviewing it (I'm sure
  he didn't know this), so merged in some changes I made during
  review.  Nothing material apart from changing a new `mask` local
  from int to Py_ssize_t.  Mostly this is repairing comments that
  were made incorrect, and adding new comments.  Also a few
  minor code rewrites for clarity or helpful succinctness.
........
  r46599 | neal.norwitz | 2006-06-02 06:45:53 +0200 (Fri, 02 Jun 2006) | 1 line

  Convert docstrings to comments so regrtest -v prints method names
........
  r46600 | neal.norwitz | 2006-06-02 06:50:49 +0200 (Fri, 02 Jun 2006) | 2 lines

  Fix memory leak found by valgrind.
........
  r46601 | neal.norwitz | 2006-06-02 06:54:52 +0200 (Fri, 02 Jun 2006) | 1 line

  More memory leaks from valgrind
........
  r46602 | neal.norwitz | 2006-06-02 08:23:00 +0200 (Fri, 02 Jun 2006) | 11 lines

  Patch #1357836:

  Prevent an invalid memory read from test_coding in case the done flag is set.
  In that case, the loop isn't entered.  I wonder if rather than setting
  the done flag in the cases before the loop, if they should just exit early.

  This code looks like it should be refactored.

  Backport candidate (also the early break above if decoding_fgets fails)
........
  r46603 | martin.blais | 2006-06-02 15:03:43 +0200 (Fri, 02 Jun 2006) | 1 line

  Fixed struct test to not use unittest.
........
  r46605 | tim.peters | 2006-06-03 01:22:51 +0200 (Sat, 03 Jun 2006) | 10 lines

  pprint functions used to sort a dict (by key) if and only if
  the output required more than one line.  "Small" dicts got
  displayed in seemingly random order (the hash-induced order
  produced by dict.__repr__).  None of this was documented.
  Now pprint functions always sort dicts by key, and the docs
  promise it.

  This was proposed and agreed to during the PyCon 2006 core
  sprint -- I just didn't have time for it before now.
........
2006-06-08 14:42:34 +00:00

1802 lines
43 KiB
C

/* Python interpreter top-level routines, including init/exit */
#include "Python.h"
#include "Python-ast.h"
#include "grammar.h"
#include "node.h"
#include "token.h"
#include "parsetok.h"
#include "errcode.h"
#include "code.h"
#include "compile.h"
#include "symtable.h"
#include "pyarena.h"
#include "ast.h"
#include "eval.h"
#include "marshal.h"
#include <signal.h>
#ifdef HAVE_LANGINFO_H
#include <locale.h>
#include <langinfo.h>
#endif
#ifdef MS_WINDOWS
#undef BYTE
#include "windows.h"
#endif
#ifndef Py_REF_DEBUG
#define PRINT_TOTAL_REFS()
#else /* Py_REF_DEBUG */
#define PRINT_TOTAL_REFS() fprintf(stderr, \
"[%" PY_FORMAT_SIZE_T "d refs]\n", \
_Py_GetRefTotal())
#endif
#ifdef __cplusplus
extern "C" {
#endif
extern char *Py_GetPath(void);
extern grammar _PyParser_Grammar; /* From graminit.c */
/* Forward */
static void initmain(void);
static void initsite(void);
static PyObject *run_mod(mod_ty, const char *, PyObject *, PyObject *,
PyCompilerFlags *, PyArena *);
static PyObject *run_pyc_file(FILE *, const char *, PyObject *, PyObject *,
PyCompilerFlags *);
static void err_input(perrdetail *);
static void initsigs(void);
static void call_sys_exitfunc(void);
static void call_ll_exitfuncs(void);
extern void _PyUnicode_Init(void);
extern void _PyUnicode_Fini(void);
#ifdef WITH_THREAD
extern void _PyGILState_Init(PyInterpreterState *, PyThreadState *);
extern void _PyGILState_Fini(void);
#endif /* WITH_THREAD */
int Py_DebugFlag; /* Needed by parser.c */
int Py_VerboseFlag; /* Needed by import.c */
int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
int Py_NoSiteFlag; /* Suppress 'import site' */
int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */
int Py_FrozenFlag; /* Needed by getpath.c */
int Py_UnicodeFlag = 0; /* Needed by compile.c */
int Py_IgnoreEnvironmentFlag; /* e.g. PYTHONPATH, PYTHONHOME */
/* Reference to 'warnings' module, to avoid importing it
on the fly when the import lock may be held. See 683658/771097
*/
static PyObject *warnings_module = NULL;
/* Returns a borrowed reference to the 'warnings' module, or NULL.
If the module is returned, it is guaranteed to have been obtained
without acquiring the import lock
*/
PyObject *PyModule_GetWarningsModule(void)
{
PyObject *typ, *val, *tb;
PyObject *all_modules;
/* If we managed to get the module at init time, just use it */
if (warnings_module)
return warnings_module;
/* If it wasn't available at init time, it may be available
now in sys.modules (common scenario is frozen apps: import
at init time fails, but the frozen init code sets up sys.path
correctly, then does an implicit import of warnings for us
*/
/* Save and restore any exceptions */
PyErr_Fetch(&typ, &val, &tb);
all_modules = PySys_GetObject("modules");
if (all_modules) {
warnings_module = PyDict_GetItemString(all_modules, "warnings");
/* We keep a ref in the global */
Py_XINCREF(warnings_module);
}
PyErr_Restore(typ, val, tb);
return warnings_module;
}
static int initialized = 0;
/* API to access the initialized flag -- useful for esoteric use */
int
Py_IsInitialized(void)
{
return initialized;
}
/* Global initializations. Can be undone by Py_Finalize(). Don't
call this twice without an intervening Py_Finalize() call. When
initializations fail, a fatal error is issued and the function does
not return. On return, the first thread and interpreter state have
been created.
Locking: you must hold the interpreter lock while calling this.
(If the lock has not yet been initialized, that's equivalent to
having the lock, but you cannot use multiple threads.)
*/
static int
add_flag(int flag, const char *envs)
{
int env = atoi(envs);
if (flag < env)
flag = env;
if (flag < 1)
flag = 1;
return flag;
}
void
Py_InitializeEx(int install_sigs)
{
PyInterpreterState *interp;
PyThreadState *tstate;
PyObject *bimod, *sysmod;
char *p;
#if defined(Py_USING_UNICODE) && defined(HAVE_LANGINFO_H) && defined(CODESET)
char *codeset;
char *saved_locale;
PyObject *sys_stream, *sys_isatty;
#endif
extern void _Py_ReadyTypes(void);
if (initialized)
return;
initialized = 1;
if ((p = Py_GETENV("PYTHONDEBUG")) && *p != '\0')
Py_DebugFlag = add_flag(Py_DebugFlag, p);
if ((p = Py_GETENV("PYTHONVERBOSE")) && *p != '\0')
Py_VerboseFlag = add_flag(Py_VerboseFlag, p);
if ((p = Py_GETENV("PYTHONOPTIMIZE")) && *p != '\0')
Py_OptimizeFlag = add_flag(Py_OptimizeFlag, p);
interp = PyInterpreterState_New();
if (interp == NULL)
Py_FatalError("Py_Initialize: can't make first interpreter");
tstate = PyThreadState_New(interp);
if (tstate == NULL)
Py_FatalError("Py_Initialize: can't make first thread");
(void) PyThreadState_Swap(tstate);
_Py_ReadyTypes();
if (!_PyFrame_Init())
Py_FatalError("Py_Initialize: can't init frames");
if (!_PyInt_Init())
Py_FatalError("Py_Initialize: can't init ints");
_PyFloat_Init();
interp->modules = PyDict_New();
if (interp->modules == NULL)
Py_FatalError("Py_Initialize: can't make modules dictionary");
#ifdef Py_USING_UNICODE
/* Init Unicode implementation; relies on the codec registry */
_PyUnicode_Init();
#endif
bimod = _PyBuiltin_Init();
if (bimod == NULL)
Py_FatalError("Py_Initialize: can't initialize __builtin__");
interp->builtins = PyModule_GetDict(bimod);
Py_INCREF(interp->builtins);
sysmod = _PySys_Init();
if (sysmod == NULL)
Py_FatalError("Py_Initialize: can't initialize sys");
interp->sysdict = PyModule_GetDict(sysmod);
Py_INCREF(interp->sysdict);
_PyImport_FixupExtension("sys", "sys");
PySys_SetPath(Py_GetPath());
PyDict_SetItemString(interp->sysdict, "modules",
interp->modules);
_PyImport_Init();
/* initialize builtin exceptions */
_PyExc_Init();
_PyImport_FixupExtension("exceptions", "exceptions");
/* phase 2 of builtins */
_PyImport_FixupExtension("__builtin__", "__builtin__");
_PyImportHooks_Init();
if (install_sigs)
initsigs(); /* Signal handling stuff, including initintr() */
initmain(); /* Module __main__ */
if (!Py_NoSiteFlag)
initsite(); /* Module site */
/* auto-thread-state API, if available */
#ifdef WITH_THREAD
_PyGILState_Init(interp, tstate);
#endif /* WITH_THREAD */
warnings_module = PyImport_ImportModule("warnings");
if (!warnings_module)
PyErr_Clear();
#if defined(Py_USING_UNICODE) && defined(HAVE_LANGINFO_H) && defined(CODESET)
/* On Unix, set the file system encoding according to the
user's preference, if the CODESET names a well-known
Python codec, and Py_FileSystemDefaultEncoding isn't
initialized by other means. Also set the encoding of
stdin and stdout if these are terminals. */
saved_locale = strdup(setlocale(LC_CTYPE, NULL));
setlocale(LC_CTYPE, "");
codeset = nl_langinfo(CODESET);
if (codeset && *codeset) {
PyObject *enc = PyCodec_Encoder(codeset);
if (enc) {
codeset = strdup(codeset);
Py_DECREF(enc);
} else {
codeset = NULL;
PyErr_Clear();
}
} else
codeset = NULL;
setlocale(LC_CTYPE, saved_locale);
free(saved_locale);
if (codeset) {
sys_stream = PySys_GetObject("stdin");
sys_isatty = PyObject_CallMethod(sys_stream, "isatty", "");
if (!sys_isatty)
PyErr_Clear();
if(sys_isatty && PyObject_IsTrue(sys_isatty)) {
if (!PyFile_SetEncoding(sys_stream, codeset))
Py_FatalError("Cannot set codeset of stdin");
}
Py_XDECREF(sys_isatty);
sys_stream = PySys_GetObject("stdout");
sys_isatty = PyObject_CallMethod(sys_stream, "isatty", "");
if (!sys_isatty)
PyErr_Clear();
if(sys_isatty && PyObject_IsTrue(sys_isatty)) {
if (!PyFile_SetEncoding(sys_stream, codeset))
Py_FatalError("Cannot set codeset of stdout");
}
Py_XDECREF(sys_isatty);
sys_stream = PySys_GetObject("stderr");
sys_isatty = PyObject_CallMethod(sys_stream, "isatty", "");
if (!sys_isatty)
PyErr_Clear();
if(sys_isatty && PyObject_IsTrue(sys_isatty)) {
if (!PyFile_SetEncoding(sys_stream, codeset))
Py_FatalError("Cannot set codeset of stderr");
}
Py_XDECREF(sys_isatty);
if (!Py_FileSystemDefaultEncoding)
Py_FileSystemDefaultEncoding = codeset;
else
free(codeset);
}
#endif
}
void
Py_Initialize(void)
{
Py_InitializeEx(1);
}
#ifdef COUNT_ALLOCS
extern void dump_counts(FILE*);
#endif
/* Undo the effect of Py_Initialize().
Beware: if multiple interpreter and/or thread states exist, these
are not wiped out; only the current thread and interpreter state
are deleted. But since everything else is deleted, those other
interpreter and thread states should no longer be used.
(XXX We should do better, e.g. wipe out all interpreters and
threads.)
Locking: as above.
*/
void
Py_Finalize(void)
{
PyInterpreterState *interp;
PyThreadState *tstate;
if (!initialized)
return;
/* The interpreter is still entirely intact at this point, and the
* exit funcs may be relying on that. In particular, if some thread
* or exit func is still waiting to do an import, the import machinery
* expects Py_IsInitialized() to return true. So don't say the
* interpreter is uninitialized until after the exit funcs have run.
* Note that Threading.py uses an exit func to do a join on all the
* threads created thru it, so this also protects pending imports in
* the threads created via Threading.
*/
call_sys_exitfunc();
initialized = 0;
/* Get current thread state and interpreter pointer */
tstate = PyThreadState_GET();
interp = tstate->interp;
/* Disable signal handling */
PyOS_FiniInterrupts();
/* drop module references we saved */
Py_XDECREF(warnings_module);
warnings_module = NULL;
/* Collect garbage. This may call finalizers; it's nice to call these
* before all modules are destroyed.
* XXX If a __del__ or weakref callback is triggered here, and tries to
* XXX import a module, bad things can happen, because Python no
* XXX longer believes it's initialized.
* XXX Fatal Python error: Interpreter not initialized (version mismatch?)
* XXX is easy to provoke that way. I've also seen, e.g.,
* XXX Exception exceptions.ImportError: 'No module named sha'
* XXX in <function callback at 0x008F5718> ignored
* XXX but I'm unclear on exactly how that one happens. In any case,
* XXX I haven't seen a real-life report of either of these.
*/
PyGC_Collect();
#ifdef COUNT_ALLOCS
/* With COUNT_ALLOCS, it helps to run GC multiple times:
each collection might release some types from the type
list, so they become garbage. */
while (PyGC_Collect() > 0)
/* nothing */;
#endif
/* Destroy all modules */
PyImport_Cleanup();
/* Collect final garbage. This disposes of cycles created by
* new-style class definitions, for example.
* XXX This is disabled because it caused too many problems. If
* XXX a __del__ or weakref callback triggers here, Python code has
* XXX a hard time running, because even the sys module has been
* XXX cleared out (sys.stdout is gone, sys.excepthook is gone, etc).
* XXX One symptom is a sequence of information-free messages
* XXX coming from threads (if a __del__ or callback is invoked,
* XXX other threads can execute too, and any exception they encounter
* XXX triggers a comedy of errors as subsystem after subsystem
* XXX fails to find what it *expects* to find in sys to help report
* XXX the exception and consequent unexpected failures). I've also
* XXX seen segfaults then, after adding print statements to the
* XXX Python code getting called.
*/
#if 0
PyGC_Collect();
#endif
/* Destroy the database used by _PyImport_{Fixup,Find}Extension */
_PyImport_Fini();
/* Debugging stuff */
#ifdef COUNT_ALLOCS
dump_counts(stdout);
#endif
PRINT_TOTAL_REFS();
#ifdef Py_TRACE_REFS
/* Display all objects still alive -- this can invoke arbitrary
* __repr__ overrides, so requires a mostly-intact interpreter.
* Alas, a lot of stuff may still be alive now that will be cleaned
* up later.
*/
if (Py_GETENV("PYTHONDUMPREFS"))
_Py_PrintReferences(stderr);
#endif /* Py_TRACE_REFS */
/* Cleanup auto-thread-state */
#ifdef WITH_THREAD
_PyGILState_Fini();
#endif /* WITH_THREAD */
/* Clear interpreter state */
PyInterpreterState_Clear(interp);
/* Now we decref the exception classes. After this point nothing
can raise an exception. That's okay, because each Fini() method
below has been checked to make sure no exceptions are ever
raised.
*/
_PyExc_Fini();
/* Delete current thread */
PyThreadState_Swap(NULL);
PyInterpreterState_Delete(interp);
/* Sundry finalizers */
PyMethod_Fini();
PyFrame_Fini();
PyCFunction_Fini();
PyTuple_Fini();
PyList_Fini();
PySet_Fini();
PyString_Fini();
PyInt_Fini();
PyFloat_Fini();
#ifdef Py_USING_UNICODE
/* Cleanup Unicode implementation */
_PyUnicode_Fini();
#endif
/* XXX Still allocated:
- various static ad-hoc pointers to interned strings
- int and float free list blocks
- whatever various modules and libraries allocate
*/
PyGrammar_RemoveAccelerators(&_PyParser_Grammar);
#ifdef Py_TRACE_REFS
/* Display addresses (& refcnts) of all objects still alive.
* An address can be used to find the repr of the object, printed
* above by _Py_PrintReferences.
*/
if (Py_GETENV("PYTHONDUMPREFS"))
_Py_PrintReferenceAddresses(stderr);
#endif /* Py_TRACE_REFS */
#ifdef PYMALLOC_DEBUG
if (Py_GETENV("PYTHONMALLOCSTATS"))
_PyObject_DebugMallocStats();
#endif
call_ll_exitfuncs();
}
/* Create and initialize a new interpreter and thread, and return the
new thread. This requires that Py_Initialize() has been called
first.
Unsuccessful initialization yields a NULL pointer. Note that *no*
exception information is available even in this case -- the
exception information is held in the thread, and there is no
thread.
Locking: as above.
*/
PyThreadState *
Py_NewInterpreter(void)
{
PyInterpreterState *interp;
PyThreadState *tstate, *save_tstate;
PyObject *bimod, *sysmod;
if (!initialized)
Py_FatalError("Py_NewInterpreter: call Py_Initialize first");
interp = PyInterpreterState_New();
if (interp == NULL)
return NULL;
tstate = PyThreadState_New(interp);
if (tstate == NULL) {
PyInterpreterState_Delete(interp);
return NULL;
}
save_tstate = PyThreadState_Swap(tstate);
/* XXX The following is lax in error checking */
interp->modules = PyDict_New();
bimod = _PyImport_FindExtension("__builtin__", "__builtin__");
if (bimod != NULL) {
interp->builtins = PyModule_GetDict(bimod);
Py_INCREF(interp->builtins);
}
sysmod = _PyImport_FindExtension("sys", "sys");
if (bimod != NULL && sysmod != NULL) {
interp->sysdict = PyModule_GetDict(sysmod);
Py_INCREF(interp->sysdict);
PySys_SetPath(Py_GetPath());
PyDict_SetItemString(interp->sysdict, "modules",
interp->modules);
_PyImportHooks_Init();
initmain();
if (!Py_NoSiteFlag)
initsite();
}
if (!PyErr_Occurred())
return tstate;
/* Oops, it didn't work. Undo it all. */
PyErr_Print();
PyThreadState_Clear(tstate);
PyThreadState_Swap(save_tstate);
PyThreadState_Delete(tstate);
PyInterpreterState_Delete(interp);
return NULL;
}
/* Delete an interpreter and its last thread. This requires that the
given thread state is current, that the thread has no remaining
frames, and that it is its interpreter's only remaining thread.
It is a fatal error to violate these constraints.
(Py_Finalize() doesn't have these constraints -- it zaps
everything, regardless.)
Locking: as above.
*/
void
Py_EndInterpreter(PyThreadState *tstate)
{
PyInterpreterState *interp = tstate->interp;
if (tstate != PyThreadState_GET())
Py_FatalError("Py_EndInterpreter: thread is not current");
if (tstate->frame != NULL)
Py_FatalError("Py_EndInterpreter: thread still has a frame");
if (tstate != interp->tstate_head || tstate->next != NULL)
Py_FatalError("Py_EndInterpreter: not the last thread");
PyImport_Cleanup();
PyInterpreterState_Clear(interp);
PyThreadState_Swap(NULL);
PyInterpreterState_Delete(interp);
}
static char *progname = "python";
void
Py_SetProgramName(char *pn)
{
if (pn && *pn)
progname = pn;
}
char *
Py_GetProgramName(void)
{
return progname;
}
static char *default_home = NULL;
void
Py_SetPythonHome(char *home)
{
default_home = home;
}
char *
Py_GetPythonHome(void)
{
char *home = default_home;
if (home == NULL && !Py_IgnoreEnvironmentFlag)
home = Py_GETENV("PYTHONHOME");
return home;
}
/* Create __main__ module */
static void
initmain(void)
{
PyObject *m, *d;
m = PyImport_AddModule("__main__");
if (m == NULL)
Py_FatalError("can't create __main__ module");
d = PyModule_GetDict(m);
if (PyDict_GetItemString(d, "__builtins__") == NULL) {
PyObject *bimod = PyImport_ImportModule("__builtin__");
if (bimod == NULL ||
PyDict_SetItemString(d, "__builtins__", bimod) != 0)
Py_FatalError("can't add __builtins__ to __main__");
Py_DECREF(bimod);
}
}
/* Import the site module (not into __main__ though) */
static void
initsite(void)
{
PyObject *m, *f;
m = PyImport_ImportModule("site");
if (m == NULL) {
f = PySys_GetObject("stderr");
if (Py_VerboseFlag) {
PyFile_WriteString(
"'import site' failed; traceback:\n", f);
PyErr_Print();
}
else {
PyFile_WriteString(
"'import site' failed; use -v for traceback\n", f);
PyErr_Clear();
}
}
else {
Py_DECREF(m);
}
}
/* Parse input from a file and execute it */
int
PyRun_AnyFileExFlags(FILE *fp, const char *filename, int closeit,
PyCompilerFlags *flags)
{
if (filename == NULL)
filename = "???";
if (Py_FdIsInteractive(fp, filename)) {
int err = PyRun_InteractiveLoopFlags(fp, filename, flags);
if (closeit)
fclose(fp);
return err;
}
else
return PyRun_SimpleFileExFlags(fp, filename, closeit, flags);
}
int
PyRun_InteractiveLoopFlags(FILE *fp, const char *filename, PyCompilerFlags *flags)
{
PyObject *v;
int ret;
PyCompilerFlags local_flags;
if (flags == NULL) {
flags = &local_flags;
local_flags.cf_flags = 0;
}
v = PySys_GetObject("ps1");
if (v == NULL) {
PySys_SetObject("ps1", v = PyString_FromString(">>> "));
Py_XDECREF(v);
}
v = PySys_GetObject("ps2");
if (v == NULL) {
PySys_SetObject("ps2", v = PyString_FromString("... "));
Py_XDECREF(v);
}
for (;;) {
ret = PyRun_InteractiveOneFlags(fp, filename, flags);
PRINT_TOTAL_REFS();
if (ret == E_EOF)
return 0;
/*
if (ret == E_NOMEM)
return -1;
*/
}
}
/* compute parser flags based on compiler flags */
#define PARSER_FLAGS(flags) \
((flags) ? ((((flags)->cf_flags & PyCF_DONT_IMPLY_DEDENT) ? \
PyPARSE_DONT_IMPLY_DEDENT : 0)) : 0)
int
PyRun_InteractiveOneFlags(FILE *fp, const char *filename, PyCompilerFlags *flags)
{
PyObject *m, *d, *v, *w;
mod_ty mod;
PyArena *arena;
char *ps1 = "", *ps2 = "";
int errcode = 0;
v = PySys_GetObject("ps1");
if (v != NULL) {
v = PyObject_Str(v);
if (v == NULL)
PyErr_Clear();
else if (PyString_Check(v))
ps1 = PyString_AsString(v);
}
w = PySys_GetObject("ps2");
if (w != NULL) {
w = PyObject_Str(w);
if (w == NULL)
PyErr_Clear();
else if (PyString_Check(w))
ps2 = PyString_AsString(w);
}
arena = PyArena_New();
mod = PyParser_ASTFromFile(fp, filename,
Py_single_input, ps1, ps2,
flags, &errcode, arena);
Py_XDECREF(v);
Py_XDECREF(w);
if (mod == NULL) {
PyArena_Free(arena);
if (errcode == E_EOF) {
PyErr_Clear();
return E_EOF;
}
PyErr_Print();
return -1;
}
m = PyImport_AddModule("__main__");
if (m == NULL) {
PyArena_Free(arena);
return -1;
}
d = PyModule_GetDict(m);
v = run_mod(mod, filename, d, d, flags, arena);
PyArena_Free(arena);
if (v == NULL) {
PyErr_Print();
return -1;
}
Py_DECREF(v);
if (Py_FlushLine())
PyErr_Clear();
return 0;
}
/* Check whether a file maybe a pyc file: Look at the extension,
the file type, and, if we may close it, at the first few bytes. */
static int
maybe_pyc_file(FILE *fp, const char* filename, const char* ext, int closeit)
{
if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0)
return 1;
/* Only look into the file if we are allowed to close it, since
it then should also be seekable. */
if (closeit) {
/* Read only two bytes of the magic. If the file was opened in
text mode, the bytes 3 and 4 of the magic (\r\n) might not
be read as they are on disk. */
unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF;
unsigned char buf[2];
/* Mess: In case of -x, the stream is NOT at its start now,
and ungetc() was used to push back the first newline,
which makes the current stream position formally undefined,
and a x-platform nightmare.
Unfortunately, we have no direct way to know whether -x
was specified. So we use a terrible hack: if the current
stream position is not 0, we assume -x was specified, and
give up. Bug 132850 on SourceForge spells out the
hopelessness of trying anything else (fseek and ftell
don't work predictably x-platform for text-mode files).
*/
int ispyc = 0;
if (ftell(fp) == 0) {
if (fread(buf, 1, 2, fp) == 2 &&
((unsigned int)buf[1]<<8 | buf[0]) == halfmagic)
ispyc = 1;
rewind(fp);
}
return ispyc;
}
return 0;
}
int
PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit,
PyCompilerFlags *flags)
{
PyObject *m, *d, *v;
const char *ext;
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = PyModule_GetDict(m);
if (PyDict_GetItemString(d, "__file__") == NULL) {
PyObject *f = PyString_FromString(filename);
if (f == NULL)
return -1;
if (PyDict_SetItemString(d, "__file__", f) < 0) {
Py_DECREF(f);
return -1;
}
Py_DECREF(f);
}
ext = filename + strlen(filename) - 4;
if (maybe_pyc_file(fp, filename, ext, closeit)) {
/* Try to run a pyc file. First, re-open in binary */
if (closeit)
fclose(fp);
if ((fp = fopen(filename, "rb")) == NULL) {
fprintf(stderr, "python: Can't reopen .pyc file\n");
return -1;
}
/* Turn on optimization if a .pyo file is given */
if (strcmp(ext, ".pyo") == 0)
Py_OptimizeFlag = 1;
v = run_pyc_file(fp, filename, d, d, flags);
} else {
v = PyRun_FileExFlags(fp, filename, Py_file_input, d, d,
closeit, flags);
}
if (v == NULL) {
PyErr_Print();
return -1;
}
Py_DECREF(v);
if (Py_FlushLine())
PyErr_Clear();
return 0;
}
int
PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags)
{
PyObject *m, *d, *v;
m = PyImport_AddModule("__main__");
if (m == NULL)
return -1;
d = PyModule_GetDict(m);
v = PyRun_StringFlags(command, Py_file_input, d, d, flags);
if (v == NULL) {
PyErr_Print();
return -1;
}
Py_DECREF(v);
if (Py_FlushLine())
PyErr_Clear();
return 0;
}
static int
parse_syntax_error(PyObject *err, PyObject **message, const char **filename,
int *lineno, int *offset, const char **text)
{
long hold;
PyObject *v;
/* old style errors */
if (PyTuple_Check(err))
return PyArg_ParseTuple(err, "O(ziiz)", message, filename,
lineno, offset, text);
/* new style errors. `err' is an instance */
if (! (v = PyObject_GetAttrString(err, "msg")))
goto finally;
*message = v;
if (!(v = PyObject_GetAttrString(err, "filename")))
goto finally;
if (v == Py_None)
*filename = NULL;
else if (! (*filename = PyString_AsString(v)))
goto finally;
Py_DECREF(v);
if (!(v = PyObject_GetAttrString(err, "lineno")))
goto finally;
hold = PyInt_AsLong(v);
Py_DECREF(v);
v = NULL;
if (hold < 0 && PyErr_Occurred())
goto finally;
*lineno = (int)hold;
if (!(v = PyObject_GetAttrString(err, "offset")))
goto finally;
if (v == Py_None) {
*offset = -1;
Py_DECREF(v);
v = NULL;
} else {
hold = PyInt_AsLong(v);
Py_DECREF(v);
v = NULL;
if (hold < 0 && PyErr_Occurred())
goto finally;
*offset = (int)hold;
}
if (!(v = PyObject_GetAttrString(err, "text")))
goto finally;
if (v == Py_None)
*text = NULL;
else if (! (*text = PyString_AsString(v)))
goto finally;
Py_DECREF(v);
return 1;
finally:
Py_XDECREF(v);
return 0;
}
void
PyErr_Print(void)
{
PyErr_PrintEx(1);
}
static void
print_error_text(PyObject *f, int offset, const char *text)
{
char *nl;
if (offset >= 0) {
if (offset > 0 && offset == (int)strlen(text))
offset--;
for (;;) {
nl = strchr(text, '\n');
if (nl == NULL || nl-text >= offset)
break;
offset -= (int)(nl+1-text);
text = nl+1;
}
while (*text == ' ' || *text == '\t') {
text++;
offset--;
}
}
PyFile_WriteString(" ", f);
PyFile_WriteString(text, f);
if (*text == '\0' || text[strlen(text)-1] != '\n')
PyFile_WriteString("\n", f);
if (offset == -1)
return;
PyFile_WriteString(" ", f);
offset--;
while (offset > 0) {
PyFile_WriteString(" ", f);
offset--;
}
PyFile_WriteString("^\n", f);
}
static void
handle_system_exit(void)
{
PyObject *exception, *value, *tb;
int exitcode = 0;
PyErr_Fetch(&exception, &value, &tb);
if (Py_FlushLine())
PyErr_Clear();
fflush(stdout);
if (value == NULL || value == Py_None)
goto done;
if (PyExceptionInstance_Check(value)) {
/* The error code should be in the `code' attribute. */
PyObject *code = PyObject_GetAttrString(value, "code");
if (code) {
Py_DECREF(value);
value = code;
if (value == Py_None)
goto done;
}
/* If we failed to dig out the 'code' attribute,
just let the else clause below print the error. */
}
if (PyInt_Check(value))
exitcode = (int)PyInt_AsLong(value);
else {
PyObject_Print(value, stderr, Py_PRINT_RAW);
PySys_WriteStderr("\n");
exitcode = 1;
}
done:
/* Restore and clear the exception info, in order to properly decref
* the exception, value, and traceback. If we just exit instead,
* these leak, which confuses PYTHONDUMPREFS output, and may prevent
* some finalizers from running.
*/
PyErr_Restore(exception, value, tb);
PyErr_Clear();
Py_Exit(exitcode);
/* NOTREACHED */
}
void
PyErr_PrintEx(int set_sys_last_vars)
{
PyObject *exception, *v, *tb, *hook;
if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
handle_system_exit();
}
PyErr_Fetch(&exception, &v, &tb);
if (exception == NULL)
return;
PyErr_NormalizeException(&exception, &v, &tb);
if (exception == NULL)
return;
/* Now we know v != NULL too */
if (set_sys_last_vars) {
PySys_SetObject("last_type", exception);
PySys_SetObject("last_value", v);
PySys_SetObject("last_traceback", tb);
}
hook = PySys_GetObject("excepthook");
if (hook) {
PyObject *args = PyTuple_Pack(3,
exception, v, tb ? tb : Py_None);
PyObject *result = PyEval_CallObject(hook, args);
if (result == NULL) {
PyObject *exception2, *v2, *tb2;
if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
handle_system_exit();
}
PyErr_Fetch(&exception2, &v2, &tb2);
PyErr_NormalizeException(&exception2, &v2, &tb2);
if (Py_FlushLine())
PyErr_Clear();
fflush(stdout);
PySys_WriteStderr("Error in sys.excepthook:\n");
PyErr_Display(exception2, v2, tb2);
PySys_WriteStderr("\nOriginal exception was:\n");
PyErr_Display(exception, v, tb);
Py_XDECREF(exception2);
Py_XDECREF(v2);
Py_XDECREF(tb2);
}
Py_XDECREF(result);
Py_XDECREF(args);
} else {
PySys_WriteStderr("sys.excepthook is missing\n");
PyErr_Display(exception, v, tb);
}
Py_XDECREF(exception);
Py_XDECREF(v);
Py_XDECREF(tb);
}
void
PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
{
int err = 0;
PyObject *f = PySys_GetObject("stderr");
Py_INCREF(value);
if (f == NULL)
fprintf(stderr, "lost sys.stderr\n");
else {
if (Py_FlushLine())
PyErr_Clear();
fflush(stdout);
if (tb && tb != Py_None)
err = PyTraceBack_Print(tb, f);
if (err == 0 &&
PyObject_HasAttrString(value, "print_file_and_line"))
{
PyObject *message;
const char *filename, *text;
int lineno, offset;
if (!parse_syntax_error(value, &message, &filename,
&lineno, &offset, &text))
PyErr_Clear();
else {
char buf[10];
PyFile_WriteString(" File \"", f);
if (filename == NULL)
PyFile_WriteString("<string>", f);
else
PyFile_WriteString(filename, f);
PyFile_WriteString("\", line ", f);
PyOS_snprintf(buf, sizeof(buf), "%d", lineno);
PyFile_WriteString(buf, f);
PyFile_WriteString("\n", f);
if (text != NULL)
print_error_text(f, offset, text);
Py_DECREF(value);
value = message;
/* Can't be bothered to check all those
PyFile_WriteString() calls */
if (PyErr_Occurred())
err = -1;
}
}
if (err) {
/* Don't do anything else */
}
else if (PyExceptionClass_Check(exception)) {
PyObject* moduleName;
char* className = PyExceptionClass_Name(exception);
if (className != NULL) {
char *dot = strrchr(className, '.');
if (dot != NULL)
className = dot+1;
}
moduleName = PyObject_GetAttrString(exception, "__module__");
if (moduleName == NULL)
err = PyFile_WriteString("<unknown>", f);
else {
char* modstr = PyString_AsString(moduleName);
if (modstr && strcmp(modstr, "exceptions"))
{
err = PyFile_WriteString(modstr, f);
err += PyFile_WriteString(".", f);
}
Py_DECREF(moduleName);
}
if (err == 0) {
if (className == NULL)
err = PyFile_WriteString("<unknown>", f);
else
err = PyFile_WriteString(className, f);
}
}
else
err = PyFile_WriteObject(exception, f, Py_PRINT_RAW);
if (err == 0 && (value != Py_None)) {
PyObject *s = PyObject_Str(value);
/* only print colon if the str() of the
object is not the empty string
*/
if (s == NULL)
err = -1;
else if (!PyString_Check(s) ||
PyString_GET_SIZE(s) != 0)
err = PyFile_WriteString(": ", f);
if (err == 0)
err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
Py_XDECREF(s);
}
if (err == 0)
err = PyFile_WriteString("\n", f);
}
Py_DECREF(value);
/* If an error happened here, don't show it.
XXX This is wrong, but too many callers rely on this behavior. */
if (err != 0)
PyErr_Clear();
}
PyObject *
PyRun_StringFlags(const char *str, int start, PyObject *globals,
PyObject *locals, PyCompilerFlags *flags)
{
PyObject *ret = NULL;
PyArena *arena = PyArena_New();
mod_ty mod = PyParser_ASTFromString(str, "<string>", start, flags,
arena);
if (mod != NULL)
ret = run_mod(mod, "<string>", globals, locals, flags, arena);
PyArena_Free(arena);
return ret;
}
PyObject *
PyRun_FileExFlags(FILE *fp, const char *filename, int start, PyObject *globals,
PyObject *locals, int closeit, PyCompilerFlags *flags)
{
PyObject *ret;
PyArena *arena = PyArena_New();
mod_ty mod = PyParser_ASTFromFile(fp, filename, start, 0, 0,
flags, NULL, arena);
if (mod == NULL) {
PyArena_Free(arena);
return NULL;
}
if (closeit)
fclose(fp);
ret = run_mod(mod, filename, globals, locals, flags, arena);
PyArena_Free(arena);
return ret;
}
static PyObject *
run_mod(mod_ty mod, const char *filename, PyObject *globals, PyObject *locals,
PyCompilerFlags *flags, PyArena *arena)
{
PyCodeObject *co;
PyObject *v;
co = PyAST_Compile(mod, filename, flags, arena);
if (co == NULL)
return NULL;
v = PyEval_EvalCode(co, globals, locals);
Py_DECREF(co);
return v;
}
static PyObject *
run_pyc_file(FILE *fp, const char *filename, PyObject *globals,
PyObject *locals, PyCompilerFlags *flags)
{
PyCodeObject *co;
PyObject *v;
long magic;
long PyImport_GetMagicNumber(void);
magic = PyMarshal_ReadLongFromFile(fp);
if (magic != PyImport_GetMagicNumber()) {
PyErr_SetString(PyExc_RuntimeError,
"Bad magic number in .pyc file");
return NULL;
}
(void) PyMarshal_ReadLongFromFile(fp);
v = PyMarshal_ReadLastObjectFromFile(fp);
fclose(fp);
if (v == NULL || !PyCode_Check(v)) {
Py_XDECREF(v);
PyErr_SetString(PyExc_RuntimeError,
"Bad code object in .pyc file");
return NULL;
}
co = (PyCodeObject *)v;
v = PyEval_EvalCode(co, globals, locals);
if (v && flags)
flags->cf_flags |= (co->co_flags & PyCF_MASK);
Py_DECREF(co);
return v;
}
PyObject *
Py_CompileStringFlags(const char *str, const char *filename, int start,
PyCompilerFlags *flags)
{
PyCodeObject *co;
PyArena *arena = PyArena_New();
mod_ty mod = PyParser_ASTFromString(str, filename, start, flags, arena);
if (mod == NULL) {
PyArena_Free(arena);
return NULL;
}
if (flags && (flags->cf_flags & PyCF_ONLY_AST)) {
PyObject *result = PyAST_mod2obj(mod);
PyArena_Free(arena);
return result;
}
co = PyAST_Compile(mod, filename, flags, arena);
PyArena_Free(arena);
return (PyObject *)co;
}
struct symtable *
Py_SymtableString(const char *str, const char *filename, int start)
{
struct symtable *st;
PyArena *arena = PyArena_New();
mod_ty mod = PyParser_ASTFromString(str, filename, start, NULL, arena);
if (mod == NULL) {
PyArena_Free(arena);
return NULL;
}
st = PySymtable_Build(mod, filename, 0);
PyArena_Free(arena);
return st;
}
/* Preferred access to parser is through AST. */
mod_ty
PyParser_ASTFromString(const char *s, const char *filename, int start,
PyCompilerFlags *flags, PyArena *arena)
{
mod_ty mod;
perrdetail err;
node *n = PyParser_ParseStringFlagsFilename(s, filename,
&_PyParser_Grammar, start, &err,
PARSER_FLAGS(flags));
if (n) {
mod = PyAST_FromNode(n, flags, filename, arena);
PyNode_Free(n);
return mod;
}
else {
err_input(&err);
return NULL;
}
}
mod_ty
PyParser_ASTFromFile(FILE *fp, const char *filename, int start, char *ps1,
char *ps2, PyCompilerFlags *flags, int *errcode,
PyArena *arena)
{
mod_ty mod;
perrdetail err;
node *n = PyParser_ParseFileFlags(fp, filename, &_PyParser_Grammar,
start, ps1, ps2, &err, PARSER_FLAGS(flags));
if (n) {
mod = PyAST_FromNode(n, flags, filename, arena);
PyNode_Free(n);
return mod;
}
else {
err_input(&err);
if (errcode)
*errcode = err.error;
return NULL;
}
}
/* Simplified interface to parsefile -- return node or set exception */
node *
PyParser_SimpleParseFileFlags(FILE *fp, const char *filename, int start, int flags)
{
perrdetail err;
node *n = PyParser_ParseFileFlags(fp, filename, &_PyParser_Grammar,
start, NULL, NULL, &err, flags);
if (n == NULL)
err_input(&err);
return n;
}
/* Simplified interface to parsestring -- return node or set exception */
node *
PyParser_SimpleParseStringFlags(const char *str, int start, int flags)
{
perrdetail err;
node *n = PyParser_ParseStringFlags(str, &_PyParser_Grammar,
start, &err, flags);
if (n == NULL)
err_input(&err);
return n;
}
node *
PyParser_SimpleParseStringFlagsFilename(const char *str, const char *filename,
int start, int flags)
{
perrdetail err;
node *n = PyParser_ParseStringFlagsFilename(str, filename,
&_PyParser_Grammar, start, &err, flags);
if (n == NULL)
err_input(&err);
return n;
}
node *
PyParser_SimpleParseStringFilename(const char *str, const char *filename, int start)
{
return PyParser_SimpleParseStringFlagsFilename(str, filename, start, 0);
}
/* May want to move a more generalized form of this to parsetok.c or
even parser modules. */
void
PyParser_SetError(perrdetail *err)
{
err_input(err);
}
/* Set the error appropriate to the given input error code (see errcode.h) */
static void
err_input(perrdetail *err)
{
PyObject *v, *w, *errtype;
PyObject* u = NULL;
char *msg = NULL;
errtype = PyExc_SyntaxError;
switch (err->error) {
case E_SYNTAX:
errtype = PyExc_IndentationError;
if (err->expected == INDENT)
msg = "expected an indented block";
else if (err->token == INDENT)
msg = "unexpected indent";
else if (err->token == DEDENT)
msg = "unexpected unindent";
else {
errtype = PyExc_SyntaxError;
msg = "invalid syntax";
}
break;
case E_TOKEN:
msg = "invalid token";
break;
case E_EOFS:
msg = "EOF while scanning triple-quoted string";
break;
case E_EOLS:
msg = "EOL while scanning single-quoted string";
break;
case E_INTR:
if (!PyErr_Occurred())
PyErr_SetNone(PyExc_KeyboardInterrupt);
return;
case E_NOMEM:
PyErr_NoMemory();
return;
case E_EOF:
msg = "unexpected EOF while parsing";
break;
case E_TABSPACE:
errtype = PyExc_TabError;
msg = "inconsistent use of tabs and spaces in indentation";
break;
case E_OVERFLOW:
msg = "expression too long";
break;
case E_DEDENT:
errtype = PyExc_IndentationError;
msg = "unindent does not match any outer indentation level";
break;
case E_TOODEEP:
errtype = PyExc_IndentationError;
msg = "too many levels of indentation";
break;
case E_DECODE: {
PyObject *type, *value, *tb;
PyErr_Fetch(&type, &value, &tb);
if (value != NULL) {
u = PyObject_Str(value);
if (u != NULL) {
msg = PyString_AsString(u);
}
}
if (msg == NULL)
msg = "unknown decode error";
Py_XDECREF(type);
Py_XDECREF(value);
Py_XDECREF(tb);
break;
}
case E_LINECONT:
msg = "unexpected character after line continuation character";
break;
default:
fprintf(stderr, "error=%d\n", err->error);
msg = "unknown parsing error";
break;
}
v = Py_BuildValue("(ziiz)", err->filename,
err->lineno, err->offset, err->text);
if (err->text != NULL) {
PyObject_FREE(err->text);
err->text = NULL;
}
w = NULL;
if (v != NULL)
w = Py_BuildValue("(sO)", msg, v);
Py_XDECREF(u);
Py_XDECREF(v);
PyErr_SetObject(errtype, w);
Py_XDECREF(w);
}
/* Print fatal error message and abort */
void
Py_FatalError(const char *msg)
{
fprintf(stderr, "Fatal Python error: %s\n", msg);
#ifdef MS_WINDOWS
OutputDebugString("Fatal Python error: ");
OutputDebugString(msg);
OutputDebugString("\n");
#ifdef _DEBUG
DebugBreak();
#endif
#endif /* MS_WINDOWS */
abort();
}
/* Clean up and exit */
#ifdef WITH_THREAD
#include "pythread.h"
#endif
#define NEXITFUNCS 32
static void (*exitfuncs[NEXITFUNCS])(void);
static int nexitfuncs = 0;
int Py_AtExit(void (*func)(void))
{
if (nexitfuncs >= NEXITFUNCS)
return -1;
exitfuncs[nexitfuncs++] = func;
return 0;
}
static void
call_sys_exitfunc(void)
{
PyObject *exitfunc = PySys_GetObject("exitfunc");
if (exitfunc) {
PyObject *res;
Py_INCREF(exitfunc);
PySys_SetObject("exitfunc", (PyObject *)NULL);
res = PyEval_CallObject(exitfunc, (PyObject *)NULL);
if (res == NULL) {
if (!PyErr_ExceptionMatches(PyExc_SystemExit)) {
PySys_WriteStderr("Error in sys.exitfunc:\n");
}
PyErr_Print();
}
Py_DECREF(exitfunc);
}
if (Py_FlushLine())
PyErr_Clear();
}
static void
call_ll_exitfuncs(void)
{
while (nexitfuncs > 0)
(*exitfuncs[--nexitfuncs])();
fflush(stdout);
fflush(stderr);
}
void
Py_Exit(int sts)
{
Py_Finalize();
exit(sts);
}
static void
initsigs(void)
{
#ifdef SIGPIPE
PyOS_setsig(SIGPIPE, SIG_IGN);
#endif
#ifdef SIGXFZ
PyOS_setsig(SIGXFZ, SIG_IGN);
#endif
#ifdef SIGXFSZ
PyOS_setsig(SIGXFSZ, SIG_IGN);
#endif
PyOS_InitInterrupts(); /* May imply initsignal() */
}
/*
* The file descriptor fd is considered ``interactive'' if either
* a) isatty(fd) is TRUE, or
* b) the -i flag was given, and the filename associated with
* the descriptor is NULL or "<stdin>" or "???".
*/
int
Py_FdIsInteractive(FILE *fp, const char *filename)
{
if (isatty((int)fileno(fp)))
return 1;
if (!Py_InteractiveFlag)
return 0;
return (filename == NULL) ||
(strcmp(filename, "<stdin>") == 0) ||
(strcmp(filename, "???") == 0);
}
#if defined(USE_STACKCHECK)
#if defined(WIN32) && defined(_MSC_VER)
/* Stack checking for Microsoft C */
#include <malloc.h>
#include <excpt.h>
/*
* Return non-zero when we run out of memory on the stack; zero otherwise.
*/
int
PyOS_CheckStack(void)
{
__try {
/* alloca throws a stack overflow exception if there's
not enough space left on the stack */
alloca(PYOS_STACK_MARGIN * sizeof(void*));
return 0;
} __except (EXCEPTION_EXECUTE_HANDLER) {
/* just ignore all errors */
}
return 1;
}
#endif /* WIN32 && _MSC_VER */
/* Alternate implementations can be added here... */
#endif /* USE_STACKCHECK */
/* Wrappers around sigaction() or signal(). */
PyOS_sighandler_t
PyOS_getsig(int sig)
{
#ifdef HAVE_SIGACTION
struct sigaction context;
if (sigaction(sig, NULL, &context) == -1)
return SIG_ERR;
return context.sa_handler;
#else
PyOS_sighandler_t handler;
/* Special signal handling for the secure CRT in Visual Studio 2005 */
#if defined(_MSC_VER) && _MSC_VER >= 1400
switch (sig) {
/* Only these signals are valid */
case SIGINT:
case SIGILL:
case SIGFPE:
case SIGSEGV:
case SIGTERM:
case SIGBREAK:
case SIGABRT:
break;
/* Don't call signal() with other values or it will assert */
default:
return SIG_ERR;
}
#endif /* _MSC_VER && _MSC_VER >= 1400 */
handler = signal(sig, SIG_IGN);
if (handler != SIG_ERR)
signal(sig, handler);
return handler;
#endif
}
PyOS_sighandler_t
PyOS_setsig(int sig, PyOS_sighandler_t handler)
{
#ifdef HAVE_SIGACTION
struct sigaction context, ocontext;
context.sa_handler = handler;
sigemptyset(&context.sa_mask);
context.sa_flags = 0;
if (sigaction(sig, &context, &ocontext) == -1)
return SIG_ERR;
return ocontext.sa_handler;
#else
PyOS_sighandler_t oldhandler;
oldhandler = signal(sig, handler);
#ifdef HAVE_SIGINTERRUPT
siginterrupt(sig, 1);
#endif
return oldhandler;
#endif
}
/* Deprecated C API functions still provided for binary compatiblity */
#undef PyParser_SimpleParseFile
PyAPI_FUNC(node *)
PyParser_SimpleParseFile(FILE *fp, const char *filename, int start)
{
return PyParser_SimpleParseFileFlags(fp, filename, start, 0);
}
#undef PyParser_SimpleParseString
PyAPI_FUNC(node *)
PyParser_SimpleParseString(const char *str, int start)
{
return PyParser_SimpleParseStringFlags(str, start, 0);
}
#undef PyRun_AnyFile
PyAPI_FUNC(int)
PyRun_AnyFile(FILE *fp, const char *name)
{
return PyRun_AnyFileExFlags(fp, name, 0, NULL);
}
#undef PyRun_AnyFileEx
PyAPI_FUNC(int)
PyRun_AnyFileEx(FILE *fp, const char *name, int closeit)
{
return PyRun_AnyFileExFlags(fp, name, closeit, NULL);
}
#undef PyRun_AnyFileFlags
PyAPI_FUNC(int)
PyRun_AnyFileFlags(FILE *fp, const char *name, PyCompilerFlags *flags)
{
return PyRun_AnyFileExFlags(fp, name, 0, flags);
}
#undef PyRun_File
PyAPI_FUNC(PyObject *)
PyRun_File(FILE *fp, const char *p, int s, PyObject *g, PyObject *l)
{
return PyRun_FileExFlags(fp, p, s, g, l, 0, NULL);
}
#undef PyRun_FileEx
PyAPI_FUNC(PyObject *)
PyRun_FileEx(FILE *fp, const char *p, int s, PyObject *g, PyObject *l, int c)
{
return PyRun_FileExFlags(fp, p, s, g, l, c, NULL);
}
#undef PyRun_FileFlags
PyAPI_FUNC(PyObject *)
PyRun_FileFlags(FILE *fp, const char *p, int s, PyObject *g, PyObject *l,
PyCompilerFlags *flags)
{
return PyRun_FileExFlags(fp, p, s, g, l, 0, flags);
}
#undef PyRun_SimpleFile
PyAPI_FUNC(int)
PyRun_SimpleFile(FILE *f, const char *p)
{
return PyRun_SimpleFileExFlags(f, p, 0, NULL);
}
#undef PyRun_SimpleFileEx
PyAPI_FUNC(int)
PyRun_SimpleFileEx(FILE *f, const char *p, int c)
{
return PyRun_SimpleFileExFlags(f, p, c, NULL);
}
#undef PyRun_String
PyAPI_FUNC(PyObject *)
PyRun_String(const char *str, int s, PyObject *g, PyObject *l)
{
return PyRun_StringFlags(str, s, g, l, NULL);
}
#undef PyRun_SimpleString
PyAPI_FUNC(int)
PyRun_SimpleString(const char *s)
{
return PyRun_SimpleStringFlags(s, NULL);
}
#undef Py_CompileString
PyAPI_FUNC(PyObject *)
Py_CompileString(const char *str, const char *p, int s)
{
return Py_CompileStringFlags(str, p, s, NULL);
}
#undef PyRun_InteractiveOne
PyAPI_FUNC(int)
PyRun_InteractiveOne(FILE *f, const char *p)
{
return PyRun_InteractiveOneFlags(f, p, NULL);
}
#undef PyRun_InteractiveLoop
PyAPI_FUNC(int)
PyRun_InteractiveLoop(FILE *f, const char *p)
{
return PyRun_InteractiveLoopFlags(f, p, NULL);
}
#ifdef __cplusplus
}
#endif