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Description:
cxxfilt 0.3.0
Demangling C++ symbols in Python / interface to abi::__cxa_demangle
Usage
Install:
pip install cxxfilt
Use demangle to demangle a C++ mangled symbol name:
>>> import cxxfilt
>>> cxxfilt.demangle('_ZNSt22condition_variable_anyD2Ev')
'std::condition_variable_any::~condition_variable_any()'
Non-mangled name will be kept intact:
>>> cxxfilt.demangle('main')
'main'
To demangle an internal symbol, use external_only=False:
>>> cxxfilt.demangle('N3foo12BarExceptionE')
'N3foo12BarExceptionE'
>>> cxxfilt.demangle('N3foo12BarExceptionE', external_only=False)
'foo::BarException'
Invalid mangled names will trigger an InvalidName exception:
>>> cxxfilt.demangle('_ZQQ')
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/path/to/python-cxxfilt/cxxfilt/__init__.py", line 77, in demangle
return demangleb(mangled_name.encode()).decode()
File "/path/to/python-cxxfilt/cxxfilt/__init__.py", line 69, in demangleb
raise InvalidName(mangled_name)
cxxfilt.InvalidName: b'_ZQQ'
Use demangleb to demangle name in bytes:
>>> cxxfilt.demangleb(b'_ZNSt22condition_variable_anyD2Ev')
b'std::condition_variable_any::~condition_variable_any()'
Make custom Demangler objects to use specific C/C++ libraries:
>>> from ctypes.util import find_library
>>>
>>> d = cxxfilt.Demangler(find_library('c'), find_library('stdc++'))
>>> d
<Demangler libc='libc.so.6' libcxx='libstdc++.so.6'>
>>>
>>> d = cxxfilt.Demangler(find_library('c'), find_library('c++'))
>>> d
<Demangler libc='libc.so.6' libcxx='libc++.so.1'>
>>> d.demangle('_ZNSt22condition_variable_anyD2Ev')
'std::condition_variable_any::~condition_variable_any()'
Supported environments
Python 3.6 or greater.
Tested on Linux and macOS (see github actions). Should work on unix systems with libc and libc++/libstdc++.
Will not work on Windows (PR welcome though).
For Python 2.7 please use cxxfilt version < 0.3.
Changelog
0.3.0
Added Demangler class.
import cxxfilt no longer fails when there are no C/C++ libraries available.
To check whether the default demangler is valid,
use the expression: not isinstance(cxxfilt.default_demangler, cxxfilt.DeferedErrorDemangler).
Testing
run in shell:
pytest
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
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