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58 lines
1.0 KiB
Go
58 lines
1.0 KiB
Go
package main
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import (
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"fmt"
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"log"
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"os/exec"
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"strings"
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)
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type ShellError struct {
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Command string
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Err error
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}
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func (e *ShellError) Error() string {
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return fmt.Sprintf("Cannot run %q. Error %v", e.Command, e.Err)
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}
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type Commander interface {
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Exec(cmd *exec.Cmd) (string, error)
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ExecSilently(cmd *exec.Cmd) error
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}
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type DefaultCommander struct {
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logger *log.Logger
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}
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func (c DefaultCommander) Exec(cmd *exec.Cmd) (string, error) {
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if c.logger != nil {
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c.logger.Println(strings.Join(cmd.Args, " "))
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}
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output, err := cmd.CombinedOutput()
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if err != nil {
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if c.logger != nil {
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c.logger.Println(err, string(output))
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}
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return "", &ShellError{strings.Join(cmd.Args, " "), err}
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}
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return strings.TrimSuffix(string(output), "\n"), nil
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}
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func (c DefaultCommander) ExecSilently(cmd *exec.Cmd) error {
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if c.logger != nil {
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c.logger.Println(strings.Join(cmd.Args, " "))
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}
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err := cmd.Run()
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if err != nil {
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if c.logger != nil {
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c.logger.Println(err)
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}
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return &ShellError{strings.Join(cmd.Args, " "), err}
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}
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return nil
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}
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