Relative path in Go

Question

I'm trying to understand a relative path building in Go. Here is my problem: I have a folders tree:

-root
--main
---utils
---certs
--tests

Having my certificates uploaded into certs folder and connectivity util.go file uploaded into utils, I have relative paths hard coded in the file.

Problem: Having paths specified in utils/util.go, they work fine once called from main/main.go and throw exception (file not found) when called from tests/test.go.

What's the way out?

Possible duplicate of how to reference a relative file from code and tests — icza
– icza, Commented Apr 25, 2016 at 14:29
No it does not look to be duplicate. There topicstarter uses some revel framework, when for me it fails for base golang functionality... — ArkadyB
– ArkadyB, Commented Apr 25, 2016 at 14:36
Please read the answer I gave there and don't get blocked by the word "revel". — icza
– icza, Commented Apr 25, 2016 at 14:37
Hmm im not sure what exactly do u suggest.. A base path for the cert files is exactly same. The difference in the caller path. Having known my basepath how would i use it in golang to restore fullpath? — ArkadyB
– ArkadyB, Commented Apr 25, 2016 at 14:40
You may use path.Join() or filepath.Join() to get the full path. I edited my answer to show an example of it. — icza
– icza, Commented Apr 25, 2016 at 14:47

user5728991 · Accepted Answer · 2016-04-25 15:59:57Z

3

Use the go/build package to find the absolute path of a package in a Go workspace:

importPath := "github.com/user/root/main" // modify to match import path of main
p, err := build.Default.Import(importPath, "", build.FindOnly)
if err != nil {
    // handle error
}
certsDir := filepath.Join(p.Dir, "certs")

This only works when run in the context of a Go workspace (the source code is available and GOPATH is set).

answered Apr 25, 2016 at 15:59

user5728991

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