ezekg/git-hound

package main

import (
    "bytes"
    "os/exec"
    "syscall"
)

// A Command contains the binary executable to be run when executing commands.
type Command struct {
    bin string
}

// Exec runs the specified command and returns its output and exit code.
func (c *Command) Exec(cmds ...string) (string, int) {
    cmd := exec.Command(c.bin, cmds...)

    stdout := &bytes.Buffer{}
    stderr := &bytes.Buffer{}
    cmd.Stdout = stdout
    cmd.Stderr = stderr

    if err := cmd.Run(); err != nil {
        code := 1

        // Make sure we catch errors and return the correct exit code, if possible
        if exiterr, ok := err.(*exec.ExitError); ok {
            if status, ok := exiterr.Sys().(syscall.WaitStatus); ok {
                code = status.ExitStatus()
            }
        }

        return stderr.String(), code
    }

    return stdout.String(), 0
}