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# logexceptions.py - Write files containing info about Mercurial exceptions
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#
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# Copyright 2017 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import inspect
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import os
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import sys
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import traceback
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import uuid
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from mercurial import (
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dispatch,
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extensions,
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)
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def handleexception(orig, ui):
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res = orig(ui)
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if not ui.environ.get(b'HGEXCEPTIONSDIR'):
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return res
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dest = os.path.join(
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ui.environ[b'HGEXCEPTIONSDIR'], str(uuid.uuid4()).encode('ascii')
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)
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exc_type, exc_value, exc_tb = sys.exc_info()
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stack = []
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tb = exc_tb
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while tb:
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stack.append(tb)
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tb = tb.tb_next
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stack.reverse()
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hgframe = 'unknown'
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hgline = 'unknown'
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# Find the first Mercurial frame in the stack.
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for tb in stack:
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mod = inspect.getmodule(tb)
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if not mod.__name__.startswith(('hg', 'mercurial')):
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continue
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frame = tb.tb_frame
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try:
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with open(inspect.getsourcefile(tb), 'r') as fh:
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hgline = fh.readlines()[frame.f_lineno - 1].strip()
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except (IndexError, OSError):
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pass
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hgframe = '%s:%d' % (frame.f_code.co_filename, frame.f_lineno)
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break
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primary = traceback.extract_tb(exc_tb)[-1]
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primaryframe = '%s:%d' % (primary.filename, primary.lineno)
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with open(dest, 'wb') as fh:
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parts = [
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str(exc_value),
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primaryframe,
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hgframe,
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hgline,
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ui.environ[b'TESTNAME'].decode('utf-8', 'replace'),
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]
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fh.write(b'\0'.join(p.encode('utf-8', 'replace') for p in parts))
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def extsetup(ui):
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extensions.wrapfunction(dispatch, 'handlecommandexception', handleexception)
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