[英]How do you determine the full path of the currently running executable in go?
I've been using this function on osx: 我一直在osx上使用这个函数:
// Shortcut to get the path to the current executable
func ExecPath() string {
var here = os.Args[0]
if !strings.HasPrefix(here, "/") {
here, _ = exec.LookPath(os.Args[0])
if !strings.HasPrefix(here, "/") {
var wd, _ = os.Getwd()
here = path.Join(wd, here)
}
}
return here
}
...but its pretty messy, and it doesn't work on windows at all, and certainly not in git-bash on windows. ...但它非常混乱,它根本不适用于Windows,当然也不适用于Windows上的git-bash。
Is there a way of doing this cross platform? 有没有办法做这个跨平台?
NB. NB。 Specifically that args[0] depends on how the binary is invoked;
具体来说,args [0]取决于如何调用二进制文件; it is in some cases only the binary itself, eg.
在某些情况下,它只是二进制本身,例如。 "app" or "app.exe";
“app”或“app.exe”; so you can't just use that.
所以你不能只使用它。
This is the traditional way of doing it which I think will work under any platform. 这是传统的做法,我认为这种方式可以在任何平台下使用。
import (
"fmt"
"os"
"path/filepath"
)
// Shortcut to get the path to the current executable
func ExecPath() string {
var here = os.Args[0]
here, err := filepath.Abs(here)
if err != nil {
fmt.Printf("Weird path: %s\n", err)
}
return here
}
I don't think there is a cross-platform way to do this. 我不认为有一种跨平台的方式来做到这一点。
However, on OS X, there is a better way. 但是,在OS X上,有一种更好的方法。 dyld provides a function
_NSGetExecutablePath()
that gives you the path to the executable. dyld提供了一个函数
_NSGetExecutablePath()
,它为您提供了可执行文件的路径。 You can call this with CGo. 你可以用CGo调用它。
package main
// #import <mach-o/dyld.h>
import "C"
import (
"fmt"
)
func NSGetExecutablePath() string {
var buflen C.uint32_t = 1024
buf := make([]C.char, buflen)
ret := C._NSGetExecutablePath(&buf[0], &buflen)
if ret == -1 {
buf = make([]C.char, buflen)
C._NSGetExecutablePath(&buf[0], &buflen)
}
return C.GoStringN(&buf[0], C.int(buflen))
}
func main() {
fmt.Println(NSGetExecutablePath())
}
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