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package bootstrap
import (
"fmt"
"io"
"os/exec"
)
type Cmd interface {
RunWithOutput(name string, arg ...string) ([]byte, error)
Run(name string, arg ...string) error
}
type cmdWrapper struct {
stdout, stderr io.Writer
env []string
}
type errorWithOutput struct {
output []byte
err error
}
func (e errorWithOutput) Error() string {
return fmt.Sprintf("command failed with %q and output:\n%s", e.err, e.output)
}
func (e errorWithOutput) Unwrap() error {
return e.err
}
func NewCmd(stdout, stderr io.Writer, env []string) Cmd {
return &cmdWrapper{
stdout: stdout,
stderr: stderr,
env: env,
}
}
func (c *cmdWrapper) RunWithOutput(name string, arg ...string) ([]byte, error) {
command := exec.Command(name, arg...)
command.Env = c.env
output, err := command.CombinedOutput()
if err != nil {
return output, &errorWithOutput{output: output, err: err}
}
return output, nil
}
func (c *cmdWrapper) Run(name string, arg ...string) error {
command := exec.Command(name, arg...)
command.Stdout = c.stdout
command.Stderr = c.stderr
command.Env = c.env
return command.Run()
}
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