如何获取文件所在包的目录，而不是当前工作目录 [英] How to get the directory of the package the file is in, not the current working directory

问题描述

我正在打包程序以对服务进行API调用.

I'm making a package to make API calls to a service.

我有一个测试包，该测试包仅用于测试API调用和测试主包的功能，而我只是将其打包到另一个包中.

I have a test package that I use just to test the API calls and test the functions of the main package which I just include the other package into.

在我正在处理的主程序包中

In my main package that I'm working on I have

ioutil.ReadFile(filepath.Abs("Filename.pub"))

哪个还可以，但是当我从测试包中调用它时，例如

Which is ok, but when I call it from my test package e.g.

/Users/####/gocode/src/github.com/testfolder go run main.go

它告诉我

panic: open /Users/####/gocode/src/github.com/testfolder/public.pub: no such file or directory

问题是，它正在testfolder内寻找public.pub而不是它所在的github.com/apipackage/.

The problem is, is it is looking for public.pub inside of testfolder instead of github.com/apipackage/ which is where it is.

只是为了澄清这种混乱的说法:

Just to clarify this mess of words:

API包具有从同一目录读取的功能

The API Package has a function that reads from the same directory

但是因为我包括了API包，而当我go run main.go时Testfolder是CWD，所以它试图从testfolder获取它，即使main.go没有该功能并且只是包括它.

But because I'm including the API package and Testfolder is the CWD when I go run main.go it is instead trying to get it from the testfolder instead even though the main.go doesn't have the function and is just including it.

推荐答案

runtime.Caller 是我想要的相信.

这是一个示范:

package main

import (
    "fmt"
    "runtime"
    "path"
)

func main() {
    _, filename, _, ok := runtime.Caller(0)
    if !ok {
        panic("No caller information")
    }
    fmt.Printf("Filename : %q, Dir : %q\n", filename, path.Dir(filename))
}

> https://play.golang.org/p/vVa2q-Er6D

这篇关于如何获取文件所在包的目录，而不是当前工作目录的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！