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from ctypes import byref, c_void_p
from . import NGS
from .String import NGS_RawString
def RefcountRelease(ref):
"""Releases NGS-object imported from ngs-sdk
:param ref: reference to refcounted NGS-object to be released. It's expected to be of type c_void_p
:returns: None
:throws: ErrorMsg
"""
ngs_str_err = NGS_RawString()
try:
res = NGS.lib_manager.PY_NGS_RefcountRelease(ref, byref(ngs_str_err.ref))
finally:
ngs_str_err.close()
# def RefcountEngineRelease(ref):
# """Releases NGS-object imported from ngs engine
# :param ref: reference to refcounted NGS-object to be released. It's expected to be of type c_void_p
# :returns: None
# :throws: ErrorMsg
# """
# ERROR_BUFFER_SIZE = 4096
# str_err = create_string_buffer(ERROR_BUFFER_SIZE)
# from . import PY_RES_OK
# res = NGS.lib_manager.PY_NGS_Engine_RefcountRelease(ref, str_err, len(str_err))
# if res != PY_RES_OK:
# raise ErrorMsg(str_err.value)
def RefcountRawStringRelease(ref):
"""Releases raw string imported from ngs-sdk
:param ref: reference to raw char string. It's expected to be of type c_char_p
:returns: None
:throws: ErrorMsg
"""
ngs_str_err = NGS_RawString()
try:
res = NGS.lib_manager.PY_NGS_RawStringRelease(ref, byref(ngs_str_err.ref))
finally:
ngs_str_err.close()
class Refcount:
""" Base class for all refcounted objects imported from ngs-sdk
"""
def __init__(self):
self.init_members_with_null()
def __del__(self):
self.close()
def __enter__(self):
return self
def __exit__(self, t, value, traceback):
self.close()
def close(self):
if self.ref:
RefcountRelease(self.ref)
self.init_members_with_null()
def init_members_with_null(self):
self.ref = c_void_p()
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