bool ZipCompressAction::execute()

in src/main/cpp/zipcompressaction.cpp [55:149]
66 lines of code
12 McCabe index (conditional complexity)

bool ZipCompressAction::execute(LOG4CXX_NS::helpers::Pool& p) const
{
	if (!priv->source.exists(p))
	{
		return false;
	}

	apr_pool_t* aprpool = p.getAPRPool();
	apr_procattr_t* attr;
	apr_status_t stat = apr_procattr_create(&attr, aprpool);

	if (stat != APR_SUCCESS)
	{
		throw IOException(stat);
	}

	stat = apr_procattr_io_set(attr, APR_NO_PIPE, APR_NO_PIPE, APR_FULL_BLOCK);

	if (stat != APR_SUCCESS)
	{
		throw IOException(stat);
	}

	stat = apr_procattr_cmdtype_set(attr, APR_PROGRAM_PATH);

	if (stat != APR_SUCCESS)
	{
		throw IOException(stat);
	}

	//
	// redirect the child's error stream to this processes' error stream
	//
	apr_file_t* child_err;
	stat = apr_file_open_stderr(&child_err, aprpool);

	if (stat == APR_SUCCESS)
	{
		stat =  apr_procattr_child_err_set(attr, child_err, NULL);

		if (stat != APR_SUCCESS)
		{
			throw IOException(stat);
		}
	}

	const char** args = (const char**)
		apr_palloc(aprpool, 5 * sizeof(*args));
	int i = 0;

	args[i++] = "zip";
	args[i++] = "-q";
	args[i++] = Transcoder::encode(priv->destination.getPath(), p);
	args[i++] = Transcoder::encode(priv->source.getPath(), p);
	args[i++] = NULL;

	if (priv->destination.exists(p))
	{
		priv->destination.deleteFile(p);
	}

	apr_proc_t pid;
	stat = apr_proc_create(&pid, "zip", args, NULL, attr, aprpool);

	if (stat != APR_SUCCESS)
	{
		LogLog::warn(LOG4CXX_STR("Failed to fork zip during log rotation; leaving log file uncompressed"));
		if (priv->throwIOExceptionOnForkFailure)
			throw IOException(LOG4CXX_STR("zip"), stat);
		/* If we fail here (to create the zip child process),
		 * skip the compression and consider the rotation to be
		 * otherwise successful. The caller has already rotated
		 * the log file (`source` here refers to the
		 * uncompressed, rotated path, and `destination` the
		 * same path with `.zip` appended). Remove the empty
		 * destination file and leave source as-is.
		 */
		return true;
	}

	int exitCode;
	apr_proc_wait(&pid, &exitCode, NULL, APR_WAIT);

	if (exitCode != APR_SUCCESS)
	{
		throw IOException(exitCode);
	}

	if (priv->deleteSource)
	{
		priv->source.deleteFile(p);
	}

	return true;
}