C++ (Cpp) libewf_file_entry_seek_offset Examples

Example #1

File: pyewf_file_entry.c Project: zhangway100/libewf

/* Seeks a certain offset in the file entry data
 * Returns a Python object holding the offset if successful or NULL on error
 */
PyObject *pyewf_file_entry_seek_offset(
           pyewf_file_entry_t *pyewf_file_entry,
           PyObject *arguments,
           PyObject *keywords )
{
	libcerror_error_t *error    = NULL;
	static char *function       = "pyewf_file_entry_seek_offset";
	static char *keyword_list[] = { "offset", "whence", NULL };
	off64_t offset              = 0;
	int whence                  = 0;

	if( pyewf_file_entry == NULL )
	{
		PyErr_Format(
		 PyExc_TypeError,
		 "%s: invalid pyewf file_entry.",
		 function );

		return( NULL );
	}
	if( pyewf_file_entry->file_entry == NULL )
	{
		PyErr_Format(
		 PyExc_TypeError,
		 "%s: invalid pyewf file_entry - missing libewf file_entry.",
		 function );

		return( NULL );
	}
	if( PyArg_ParseTupleAndKeywords(
	     arguments,
	     keywords,
	     "L|i",
	     keyword_list,
	     &offset,
	     &whence ) == 0 )
	{
		return( NULL );
	}
	Py_BEGIN_ALLOW_THREADS

	offset = libewf_file_entry_seek_offset(
	          pyewf_file_entry->file_entry,
	          offset,
	          whence,
	          &error );

	Py_END_ALLOW_THREADS

	if( offset == -1 )
	{
		pyewf_error_raise(
		 error,
		 PyExc_IOError,
		 "%s: unable to seek offset.",
		 function );

		libcerror_error_free(
		 &error );

		return( NULL );
	}
	Py_IncRef(
	 Py_None );

	return( Py_None );
}

Example #2

File: pyewf_file_entry.c Project: fengye110/libewf_64bit

/* Seeks a certain offset in the file entry data
 * Returns a Python object holding the offset if successful or NULL on error
 */
PyObject *pyewf_file_entry_seek_offset(
           pyewf_file_entry_t *pyewf_file_entry,
           PyObject *arguments,
           PyObject *keywords )
{
	char error_string[ PYEWF_ERROR_STRING_SIZE ];

	libcerror_error_t *error    = NULL;
	static char *function       = "pyewf_file_entry_seek_offset";
	static char *keyword_list[] = { "offset", "whence", NULL };
	off64_t offset              = 0;
	int whence                  = 0;

	if( pyewf_file_entry == NULL )
	{
		PyErr_Format(
		 PyExc_TypeError,
		 "%s: invalid pyewf file_entry.",
		 function );

		return( NULL );
	}
	if( pyewf_file_entry->file_entry == NULL )
	{
		PyErr_Format(
		 PyExc_TypeError,
		 "%s: invalid pyewf file_entry - missing libewf file_entry.",
		 function );

		return( NULL );
	}
	if( PyArg_ParseTupleAndKeywords(
	     arguments,
	     keywords,
	     "L|i",
	     keyword_list,
	     &offset,
	     &whence ) == 0 )
	{
		return( NULL );
	}
	Py_BEGIN_ALLOW_THREADS

	offset = libewf_file_entry_seek_offset(
	          pyewf_file_entry->file_entry,
	          offset,
	          whence,
	          &error );

	Py_END_ALLOW_THREADS

	if( offset == -1 )
	{
		if( libcerror_error_backtrace_sprint(
		     error,
		     error_string,
		     PYEWF_ERROR_STRING_SIZE ) == -1 )
		{
			PyErr_Format(
			 PyExc_IOError,
			 "%s: unable to seek offset.",
			 function );
		}
		else
		{
			PyErr_Format(
			 PyExc_IOError,
			 "%s: unable to seek offset.\n%s",
			 function,
			 error_string );
		}
		libcerror_error_free(
		 &error );

		return( NULL );
	}
	Py_IncRef(
	 Py_None );

	return( Py_None );
}