bindings/go/util_unix.go

//go:build !windows

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package opendal

import (
	"github.com/ebitengine/purego"
	"golang.org/x/sys/unix"
)

func BytePtrFromString(s string) (*byte, error) {
	if s == "" {
		return new(byte), nil
	}
	return unix.BytePtrFromString(s)
}

func BytePtrToString(p *byte) string {
	if p == nil {
		return ""
	}
	return unix.BytePtrToString(p)
}

func LoadLibrary(path string) (uintptr, error) {
	return purego.Dlopen(path, purego.RTLD_LAZY|purego.RTLD_GLOBAL)
}

func FreeLibrary(handle uintptr) error {
	if handle == 0 {
		return nil
	}
	err := purego.Dlclose(handle)
	if err != nil {
		return err
	}
	return nil
}

func GetProcAddress(handle uintptr, name string) (uintptr, error) {
	if handle == 0 {
		return 0, nil
	}
	addr, err := purego.Dlsym(handle, name)
	if err != nil {
		return 0, err
	}
	return addr, nil
}