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Support customisation of subprocess environment variables #7

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15 changes: 15 additions & 0 deletions subprocess.go
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ type Subprocess struct {
process *exec.Cmd // The underlying *exec.Cmd that represents the subprocess.

args []string // The sanitized command arguments.
env []string // Environment variables for the subprocess.
hideStderr bool // Hide stderr output.
hideStdout bool // Hide stdout output.
shell bool // Executes the command directly in the shell without sanitization.
Expand Down Expand Up @@ -55,6 +56,16 @@ var (
s.context = path
}
}
EnvVars = func(envVars ...string) Option {
return func(s *Subprocess) {
s.env = append(s.env, envVars...)
}
}
EnvVar = func(envVar string) Option {
return func(s *Subprocess) {
s.env = append(s.env, envVar)
}
}
// Silent hides all output from the subprocess.
Silent Option = func(s *Subprocess) {
s.hideStdout = true
Expand Down Expand Up @@ -138,6 +149,10 @@ func (s *Subprocess) Exec() error {
return err
}

if s.env != nil {
cmd.Env = append(os.Environ(), s.env...)
}

stdout, err := cmd.StdoutPipe()
if err != nil {
return err
Expand Down